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6637results about How to "Reduce construction difficulty" patented technology

Intelligent traffic control system and method based on wireless Mesh ad hoc network

The invention relates to an intelligent traffic control system and method based on a wireless Mesh ad hoc network. The control system comprises n traffic control nodes, m ZigBee area base stations, a mobile communication base station and a traffic control center, wherein the n traffic control nodes are positioned in all intersections, and all kinds of equipment in the n traffic control nodes are connected by an RS-232 / RS-485 bus; adjacent nodes realize a wireless Mesh ad hoc communication network by a ZigBee technology and exchange traffic data in real time; remote connection is carried out between each ZigBee area base station and the traffic control center by adopting GPRS / CDMA (General Packet Radio Service / Code Division Multiple Access) data transmission equipment through the mobile communication base station; and m and n are respectively integers of 1-100 and 2-256. The system organically combines an advanced ZigBee short-distance wireless communication technology and a modern intelligent network technology; and the control method of the invention adopts a self-coordinating intelligent distribution type control algorithm and can realize the optimal traffic signal control effect.
Owner:GUANGXI UNIVERSITY OF TECHNOLOGY

Wellhead wall-hook packer

ActiveCN104314512ASolve the problem of blowby gas and annular pressureReduce construction difficultySealing/packingWellheadCement slurry
The invention discloses a wellhead wall-hook packer. The packer comprises a bottom plate, a rubber core, a slip and an upper cover plate, wherein the bottom plate, the rubber core, the slip and the upper cover plate are connected in sequence through bolts. During specific use, the wellhead wall-hook packer is arranged on the outer side of an inner casing in a sleeving manner, the bolts are screwed, the slip and the rubber core are squeezed by the upper cover plate and the bottom plate at the same time, the rubber core is expanded to pack a casing annulus, the slip moves down and is jogged in the surface of the inner casing to prevent the wellhead wall-hook packer from moving upwards under the action of annulus pressure. According to the scheme, annulus packing is realized through the wellhead wall-hook packer, so that the problems of blow-by and annulus belt pressure caused by poor cementing quality of the annulus are effectively solved; compared with the mode for injecting cement slurry into the annulus through a drilling machine in the prior art, the packer has the advantages that the construction difficulty is reduced to guarantee that the entire repair operation is simple and reliable.
Owner:JEREH ENERGY SERVICES

Passage formation method for underground coal gasification

A passage formation method for underground coal gasification is provided. The method comprises the following steps of: (a) building a fire area in the bottom coal bed of a first bore hole; (b) performing mechanical and directional drilling operation in a neighbor coal bed close to the bottom of the first bore hole in the vicinity of the fire area through the lower end of a second bore hole which is another existing bore hole or a newly-drilled bore hole outside the fire area, so as to pre-penetrate the neighbor coal bed and thus to form a directional passage communicated with the fire area in the neighbor coal bed; and (c) delivering an oxygen-containing gas to the fire area through the second bore hole and the directional passage, and thermally processing the directional passage to enlarge the directional passage and thus to form a gasification passage used for a underground coal gasification furnace.
Owner:ENN SCI & TECH DEV

Parking plot guiding and reverse vehicle tracking method for parking lot

The invention provides a parking plot guiding and reverse vehicle tracking method for a parking lot. After a vehicle enters the parking plot and parks in place, a system can store the association of the parking plot and the vehicle; and after a driver returns to the parking lot, the parking plot of the vehicle can be acquired by a vehicle inquiry machine. According to the parking plot guiding and reverse vehicle tracking method disclosed by the invention, a vehicle guiding function and a reverse vehicle tracking function are integrated; and the intelligence and the efficiency of parking management are greatly improved by using a wireless parking plot detection card, a wireless vehicle identification card, a parking plot guiding screen and the vehicle inquiry machine.
Owner:BEIJING TELEZONE TECH

Shield tunneling machine split starting construction method

The invention discloses a shield tunneling machine split starting construction method and belongs to the technical field of building construction. The method comprises the following steps: (1) cleaning an underground site, (2) starting base seat underground assembling and laying rails, (3) moving a first trolley and a second trolley underground and moving the first trolley and the second trolley backward, (4) moving a duct piece cart underground, (5) moving a connecting bridge and a spiral conveyor underground in a hoisting mode, and moving the connecting bridge and the spiral conveyor backward, (6) moving a starting table underground, smear ing lubricating grease, moving a cutter disk and a shield body underground and locating and assembling the cutter disk and the shield body, (7) assembling, (8) starting trying tunneling, (9) restoring to normal shield tunneling. The method has the advantages of effectively solving the problem that a shield tunneling machine cannot be operated and run normally for being restricted by the actual environment of a shield tunneling staring operation shaft on a construction site, greatly improving construction efficiency, saving construction cost, and reducing construction difficulty.
Owner:CHINA RAILWAY 13TH BUREAU GRP 6TH ENG COMPANY

Construction method of large-span subway station main body by using arched cover method and station main body structure

The invention discloses a construction method of a large-span subway station main body by using an arched cover method and a station main body structure. The construction method comprises the following steps: 1. making first-phase preparations; 2. excavating main body pilot tunnels at the left side and the right side, and carrying out primary support and top beam construction; 3. excavating a middle-part main body pilot tunnel, carrying out primary support and arch buckling construction, and refilling the earthwork; 4. carrying out earthwork excavation on a main body structure in the station, and prestressing force anchor cable construction; 5. carrying out secondary lining construction on the main body structure in the station; and 6. carrying out secondary lining and arch buckling construction on the station main body. The station main body structure comprises the main body structure in the station, a central post, a central plate and a main body arch part, wherein, the main body arch part comprises a middle arch fragment and two side arch fragments respectively arranged in the two side main body pilot tunnels formed by excavation in advance; and the main body arch part comprises a primary support system and a station main body arch buckling secondary lining structure from the outside to the inside. The station main body structure provided by the invention has reasonable design, simple construction steps, convenience in realization, small construction difficulty and rapid construction speed; the subway station formed by the construction method has a stable structure and a good use effect.
Owner:CHINA RAILWAY FIRST GRP CO LTD +1

CTCS-3-level train control center system

The invention provides a CTCS (China Train Control System)-3-level train control center system, comprising a TCC(Train Control Center). The TCC is used for carrier frequency and low frequency coded commands to a rail circuit device, and receiving rail section state information and device state information returned by the rail circuit device; the TCC is further used for transmitting coded information to the rail circuit device according to route information provided by a CBI (Channel Bus In), the rail section state information and the device state information, and the rail circuit device transmits movement authority information to the train according to the coded information; and the rail circuit device transmits a temporary speed restriction command to the train through an active transponder according to the temporary speed restriction command t transmitted by a TSRS (Temporary Speed Restriction Server). The rail circuit device is used for transmitting the movement authority information to the train according to the coded information. With the CTCS-3-level train control center system, the safety and the reliability of a high-speed railway train operation control system are both improved, and equipment cost and construction difficulty are both reduced.
Owner:CHINA RAILWAYS CORPORATION +1

Early warning method when automobile closes at high speed and early warning device

The invention discloses an early warning method when an automobile closes at high speed and an early warning device. The method comprises the following steps: when the automobile drives at high speed, a navigation signal of a global navigation satellite system defines drive parameter information of the automobile, wireless net receives the drive parameter information of circumambient automobiles, the two drive parameter information are sent into a danger assessment unit, and the danger assessment unit judges whether the danger is existed to send an early warning signal. The device comprises a receiving module of the global navigation satellite system, a warless communication module, the danger assessment unit and a warning display device. The invention is the early warning method when the automobile closes at high speed and the early warning device, having simple and compact structure, low cost, convenient installation, wide application range and high safety.
Owner:NAT UNIV OF DEFENSE TECH

Ultra-short radius radial horizontal well drilling, completion tool and technique thereof

The invention relates to a radial horizontal drilling and well completion tool with super-short radius and the process, belonging to the oil exploitation industry. It adopts deflecting drilling tool and horizontal drilling tool to drill well. The deflecting drilling tool comprises guide pipe, locating drilling bit and soft drilling bar. The horizontal drilling tool comprises horizontal rotary assembly, soft drilling bar, guide pipe, bushing with concave reversing thread and convex collar. It is characterized in that on the sleeve of deflecting rotary assembly triangle padding iron is set and the tail of deflecting rotary assembly is connected with the soft drilling bar by nut; quick coupling matched with the horizontal rotary assembly is set on the soft drilling bar; bushing with concave reversing thread and convex collar are set at the tail pipe; each segment of soft bar is 140-150mm; outer spline is set at the front end of inner ball; inner spline is set on the body and is fixed by nut; the ball is set in ball bowl and body; each segment of soft bar can bend in 3-6: ; joint spacing of slotting steel pipe following the guide pipe is 100-110mm and the joint width is 3.5-4.0mm. the invention is provided with ultra-short radius of horizontal drilling well, high accuracy, short drilling period and high efficiency. It can be used in oil exploitation, gas and running water industries.
Owner:BEIJING WANWEI YITONG TECHNOLOGICAL DEV

Movable type fire protection extinguishment method used for electrical power tunnel

The invention discloses a movable type fire protection extinguishment method used for an electrical power tunnel. By means of the method, fire vehicles can be dispatched to corresponding positions when fire protection dangers happen, and fire extinguishers are remotely controlled by a platform or locally started for extinguishment. In order to shorten the time spent on reaching an accident site, vehicle parking points are arranged on the tunnel at certain intervals, and the fire vehicles are placed at the fire vehicle parking points. The method is high in intelligent degree, light in weight, small in size, moderate in manufacturing cost, flexible in configuration, simple in path, low in maintenance cost and capable of completely achieving tasks and purposes of video surveillance, fire protection touring and linked extinguishment in the electric power tunnel. The movable type fire protection extinguishment method solves the problems that existing monitoring devices used for fire protection and extinguishment in the electrical power tunnel are generally monitoring type cameras which can hardly meet the application in the closed and semi-closed environment of the electrical power tunnel and have the insurmountable defects and disadvantages of being short in service life, narrow in monitoring range and high in maintenance cost.
Owner:康威通信技术股份有限公司

Single and double-wall combined steel cofferdam construction method and its single and double-wall combined steel cofferdam

The invention discloses a single-wall and double-wall combined steel cofferdam construction method and a single-wall and double-wall combined steel cofferdam. The single-wall and double-wall combined steel cofferdam construction method includes the following steps: firstly, assembling the bottom segment side plate of the cofferdam at an assembly field; then floating to the position of a pier; after that, injecting concrete into the foot blade and assembling the top segment of cofferdam and the top segment inclined strut; then positioning, cleaning up the pedestal, building a boring platform, installing a steel casing and stacking the sandbags sequentially; after that, injecting bottom seal concrete, and boring the pier for injection; finally, after the pier pedestal is constructed, pumping the water, cutting off the steel casing, chiseling off the laitance at the head of the pier and beginning the construction of a bearing board. The bottom segment side plate of the cofferdam is composed of circular external and internal wall panels, and the top segment side plate of the cofferdam is fixed on the circular external wall panel. The invention has the advantages of fast engineering speed, small construction difficulty and small cost investment, and the top segment side plate can be used repeatedly and is high in recovery rate; the invention overcomes the difficulties at the time of no bottoming concrete thickness; the circular sealing concrete between the bearing board and the cofferdam also has the effect of resisting water.
Owner:THE 5TH ENG MBEC

Method for constructing tunnel by finishing full section curtain grouting from upper-half section

The invention relates to the field of tunnel construction, in particular to a method for constructing a tunnel by finishing full section curtain grouting from an upper-half section, which solves the problems of long construction period, difficult construction, high construction safety risk and the like during full section curtain grouting construction of a complex geological section. The method comprises the following steps of: firstly, excavating the upper-half section, and strengthening the support of a tunnel face; secondly, constructing a temporary inverted arch and a grout-stopping wall of the upper-half section; thirdly, excavating the lower-half section in place, and strengthening the support of the tunnel face; fourthly, constructing a grout-stopping wall of the lower-half section; fifthly, forming grouting holes on the upper-half section, wherein the maximum elevation angle alpha is between 25 and 45 degrees, the maximum depression angle beta is between 30 and 70 degrees, andthe longitudinal strengthening length is between 15 and 30 m; sixth, performing grouting operation; seventh, constructing a large-scale lead pipe roof; eighth, excavating a grout-stopping wall; ninth, excavating a tunnel trunk; and finally, continuously cycling by taking an area of 15 to 30 m as a grouting strengthening cycling section to realize the construction of the tunnel by curtain groutingfrom the upper-half section. The method can greatly reduce the construction difficulty, shorten the construction period, and ensure the construction quality, and the construction is safe, quick and economic, so the method can be widely used in the field of tunnel construction.
Owner:2ND ENG CO LTD OF CHINA RAILWAY 12TH BUREAU GRP

Assembly channel steel punching beam column joint connecting device capable of achieving function recovery

InactiveCN106869325AAvoid complex stress fieldsReduce construction difficultyFloorsFloor slabPunching
The invention relates to an assembly channel steel punching beam column joint connecting device capable of achieving function recovery and belongs to the field of structural engineering. The assembly channel steel punching beam column joint connecting device capable of achieving function recovery is composed of a square steel pipe column with a cantilever beam section, a channel steel punching beam section and a connecting device of the cantilever beam section and the channel punch beam section. All welding parts of the joint connection device are all finished in a factory, so that precision and quality of welds are easier to control. Construction speed is greatly increased and construction quality is greatly improved, and a spatial structure of the channel punch beam section of the channel is conducive to pipeline penetration; the channel steel punching beam and a floor can be assembled and molded in the factory to form modular assembly units. Then all the modular assembly unit and the square steel pipe column with the cantilever beam section achieve assembly connection through the channel steel punching beam. Joints of the connection device can be used for both of beam end reinforcing and cover plate connection weakening. A multi-energy dissipation mechanism can be realized, a plastic hinge is transferred to a cover plate and a connecting plate. The function of structures can be recovered only by replacing the connecting plate after an earthquake.
Owner:BEIJING UNIV OF TECH

General public radio interface data transmission method and its device and system

The method thereof comprises: after the sending end converts the CPRI data into the frames adaptive to Ethernet transmission, it transmits the converted frames on the Ethernet; the receiving end receives the converted frames through Ethernet, and restores the converted frames into CPRI frames to get CPRI data. Before transmitting the CPRI data of one data packet, the frame head is firstly transmitted through IQ bandwidth; in the gaps of transmitting different data packets, the inter-frame gap is transmitted by using IQ bandwidth.
Owner:HUAWEI TECH CO LTD

Corrugated steel webplate combined box girder floor system for cable-stayed bridge and construction method thereof

The invention relates to a corrugated steel webplate combined box girder floor system for a cable-stayed bridge and a construction method thereof, and belongs to the technical field of bridge structures. The corrugated steel webplate combined box girder floor system comprises a precast concrete plank and a cast-in-place concrete seam, wherein the precast concrete plank is positioned on a steel box girder and is integrated with the steel box girder into a whole; the steel box girder is formed by welding a top flange steel plate, a corrugated steel webplate and a steel plate at the bottom of the box girder; a box girder baseplate stiffening rib and a diaphragm plate are welded in the steel box girder; the diaphragm plate comprises a top flange steel plate of the diaphragm plate and a steel webplate of the diaphragm plate; a toggle pin connecting piece is welded on the top flange steel plate and the top flange steel plate of the diaphragm plate; and a steel anchor pulling plate and a steel sleeve are welded on the top flange steel plate. The corrugated steel webplate combined box girder floor system simplifies the manufacturing process for the precast concrete plank, gives full play to the superior mechanical property of the corrugated steel webplate and the release action of the corrugated steel webplate on the creep effect of concrete shrinkage, improves the bearing capacity, stiffness and crack resistance of the structure, and improves the durability of the structure.
Owner:TSINGHUA UNIV

Single-side welding and double-side forming welding method for ceramic gasket

The invention discloses a single-side welding and double-side forming welding method for a ceramic gasket, and belongs to the welding field of material processing engineering. The method comprises the following steps of (1) treatment of grooves of abutted plates; (2) installation of the plates, and spot-welding fixing; (3) adding of the ceramic gasket; (4) baking for dehumidifying; (5) groove welding. The method does not need to carry out the operation that the welds of the back side are subjected to cleaning and welding operations after the structure is turned over, after the welds of the front side are welded, the double-side forming effect is directly realized, and the required matching of hoisting equipment and the required man-hours during turnover of the structure are reduced. The number of welds is reduced, and the operation of overhead welding positions is avoided. Therefore, the labor strength of workers is reduced, the welding difficulty is reduced, the production efficiency is greatly improved, and the production cost is reduced.
Owner:中船桂江造船有限公司

Self-compacting concrete for CRTS III plate-type ballastless track filling layer and preparation method for self-compacting concrete

The present invention discloses a self-compacting concrete for CRTS III plate-type ballastless track filling layer. The concrete is prepared from the following raw materials in parts by weight: 270-350 parts of cement, 0-130 parts of coal fly ash, 0-120 parts of mineral powder, 20-50 parts of an expanding agent, 790-900 parts of fine aggregate, 750-900 parts of continuous gradation coarse aggregate, 20-40 parts specific viscosity modified materials, 5.5-8.5 parts of a specific sustained release controllable polycarboxylic acid water reducing agent and 165-180 parts of water. According to the invention, the specific viscosity modified materials and specific sustained release controllable polycarboxylic acid water reducing agent are used in combination to prepare the specific self-compacting concrete for filling layer with good flowability, strong volume stability, low sensitivity for water consumption, small thixotropic time change, low shrinkage and good longevity, thereby reducing theconstruction difficulty of the CRTS III plate-type filling layer and prolonging the sevice life of the ballastless track structure.
Owner:CHINA TIESIJU CIVIL ENG GRP CO LTD +1

Composite boxed cofferdam and building method thereof

InactiveCN101358453ASinking withoutCorrection process noCaissonsDouble wallCofferdam
The invention discloses a composite casing box cofferdam and a construction method thereof. A double-wall steel cofferdam which consists of an inner wall and an outer wall which are connected is arranged on bedrock, positioned and fixed; mad and sand between the inner wall and the outer wall of the cofferdam are cleared; a bed rock hole is drilled on the bedrock between the inner wall and the outer wall of the cofferdam; steel reinforcement cages are arranged in the bedrock hole and between the inner wall and the outer wall of the cofferdam; bottom sealing concrete is poured into the bedrock hole and between the inner wall and the outer wall of the cofferdam, to construct the composite casing box cofferdam. The invention has the advantages of convenient construction, material saving, stable structure and high positioning precision.
Owner:CHINA MAJOR BRIDGE ENG

Intelligent parking system with reverse vehicle lookup function

The invention provides an intelligent parking system with a reverse vehicle lookup function. The system comprises a parking place status indicator lamp (1), a parking place detection card (2), a vehicle identification card (3), a wireless communication base station (4), a master control computer (5), a camera (6), a vehicle inquiry machine (7) and a parking place guide screen (8). According to the system, vehicle guidance and the reverse lookup function are integrated, the wireless parking place detection card, the wireless vehicle identification card, the vehicle guide screen and the vehicle inquiry machine are used, and the intelligence degree and the efficiency of parking management are greatly improved.
Owner:BEIJING TELEZONE TECH

High-performance epoxy resin asphalt warm mixing agent and preparation method thereof

The invention discloses a high-performance epoxy resin asphalt warm mixing agent comprising a component A and a component B, wherein the component A is composed of epoxy resin, a reinforcing agent and a coupling agent; the component B mainly comprises a flexible curing agent, an accelerant, a reinforcing agent, a toughening agent and a defoaming agent; and the mass proportion of the component A to the component B is equal to (100:250)-(100:300). High-performance warm mixing epoxy resin asphalt prepared by using the high-performance epoxy resin asphalt warm mixing agent provided by the invention has the characteristics of lower mixing temperature, high strength, better high-temperature ductility resistance and low-temperature fracture resistance, longer construction time, simple construction process, low-carbon and environment friendliness and the like and is suitable for paving pavements of roads, bridges, tunnels, airfield runways and the like. The invention discloses a preparation method of the high-performance epoxy resin asphalt warm mixing agent.
Owner:NANJING UNIV

Intelligent entrance guard control system with wireless ad hoc network function and control method thereof

The invention discloses an intelligent entrance guard control system with a wireless ad hoc network function and a control method thereof, which achieve the wireless ad hoc network function and remove difficulty in project wire arrangement. A safety identification module is added in a card reader to improve system safety. An entrance guard system management terminal applies an embedded gateway to manage every entrance guard controller on one hand and exchange information with an entrance guard management server on the other hand. The system adopts the mode of combination of the B / S structure and the C / S structure and is formed by a center server, branch center servers and an intelligent entrance guard controller. A center server database is interlinked with each branch center server database, and the branch center servers start ZigBee protocol stack and conduct data communication with the intelligent entrance guard controller through a ZigBee and / or transmission control protocol (TCP) / Internet protocol (IP) interface. The entrance guard controller is connected with a card reader connected with an encryption module. The swiping card record is uploaded by the intelligent entrance guard controller to corresponding branch center servers and then to the center server.
Owner:SHANDONG UNIV

Construction method for subway contact passage

The invention provides a construction method for a subway contact passage suitable for a very thick Cenozoic stratum region with low heat conductivity and strong heat insulation effect. The method comprises five stages, namely construction preparation, construction of freezing holes, freezing, digging and supporting of the passage and a water collecting well and slurry filling in the back of a wall. The method specifically comprises the following steps of: performing the construction preparation, then forming the freezing holes under the condition that the thickness of a frozen soil curtain is ensured, adding short-range freezing holes on the upper parts of the bell mouths of the freezing holes, and detaching reserved steel pipe sheets at the opening of the passage by adopting a secondary hole forming technology; performing positive freezing after a freezing system runs normally, and making the freezing system perform maintenance freezing after the frozen soil curtain meets the design requirement; after the procedures are finished, performing the digging and supporting stage of the passage and the water collecting well; and pre-burying slurry pipes and filling slurry. By the construction method, the construction difficulty is reduced, the safety and the reliability of engineering are improved, the construction period is shortened, the construction efficiency is improved, and the quality of the engineering is ensured.
Owner:TIANJIN URBAN CONSTR TUNNEL

Bi-component slow-reaction polyurea and preparation method thereof

The invention discloses a bi-component slow-reaction polyurea and a preparation method thereof. Isocyanate prepolymer and annular sterically hindered amine are used for preparing the bi-component slow-reaction polyurea, a component A is preferably made of TDI (toluene 2,4-diisocyanate) and N-220, chain extender in a component B is made of annular sterically hindered amine mixture and filler, and the annular sterically hindered amine is mainly prepared by combining aliphatics and aromatics. The bi-component slow-reaction polyurea is excellent in tensile strength, tear strength, breaking elongation, low-temperature bendability, shock resistance, flexibility and bonding strength and peel strength with base materials, and further has the advantages of fine operable time and coating performance. Further, the bi-component slow-reaction polyurea is fine in infiltration performance, low in internal stress of coatings, high in adhesive force, accordant with the environment protection requirements, suitable for small-field construction and low in cost, can be used as a lapping material, and can be also used for repairing spray polyurea coatings.
Owner:北京市大禹王防水工程集团有限公司

Adjustable leveling guide rail and leveling method thereof

The invention provides an adjustable leveling guide rail. The adjustable leveling guide rail comprises a guide rail beam and a plurality of supporting pieces, wherein each supporting piece comprises a screw rod and a nut; the screw rod is connected with the guide rail beam through the nut; the end part of the screw rod is provided with a fixing block which is hexagonal, tetragonal or triangular; the fixing block is connected with the screw rod in an integral molding mode or the fixing block is detachably connected with the screw rod; and the supporting piece also comprises a positioning piece connected with the screw rod in a fitting mode. The invention also provides a leveling method for realizing the leveling guide rail, namely, the levelness of the leveling guide rail is adjusted by rotating a leveling nut and a positioning nut. In a construction process, instant leveling is realized by clamping the fixing block, fixing the screw rod and adjusting the levelness of the guide rail by screwing the positioning nut and the adjusting nut respectively. The adjustable leveling guide rail has high leveling accuracy, can realize instant leveling in the construction process and has the advantages of low cost, convenient detachment, easy construction, clean environment, green construction and the like.
Owner:HAOHE ENG & CONSTR

Intelligent tourism integrated service management platform

InactiveCN105608643ARemove barriers to diversityAchieving comprehensive management integrationData processing applicationsResource informationComputer terminal
The invention relates to an intelligent tourism integrated service management platform. A portal layer is used for ensuring that access terminals can perform one-stop access on a management platform; a business resource layer puts local tourist sightseeing conditions into statistics to form integrated intelligent early warning services and provides comprehensive intelligent tourism information services for tourists; a resource information layer adopts cloud platform technologies, processes all data and realizes management and sharing of the data; an application support layer includes a data exchange platform, a GIS service platform and an application service platform; a data analysis layer filters and analyzes obtained data, sends filtered and analyzed data to the terminals in a targeted manner; a standard specification system and an information security system play their roles in the whole intelligent tourism integrated service management platform. With the intelligent tourism integrated service management platform of the invention adopted, comprehensive management fusion of large data volume and diversified data can be realized; a high-performance data processing center system can be provided for intelligent tourism projects; and construction schemes, data filtering methods and technical implementation means can be provided for a data processing module at a bottom layer.
Owner:GUANGXI KINGON SOFTWARE

Support change construction building method implemented by using main structure of building

The invention relates to a support change construction building method implemented by using a main structure of a building, which is characterized in that a foundation pit support is respectively supported on a foundation pit support pile and a beam slab of the main structure of the building by using the two ends of a steel supporting member, one end of the steel supporting member is connected with the structure beam slab through a steel waling and a steel soldier pile, and parts of a post-cast strip, a tunnel opening and a ramp are respectively provided with a steel-structure load-transfer member, thereby achieving a supporting effect on foundation pits; and under the action of supporting, the main structure between the foundation pit support pile and a finished structure is constructed. According to the method disclosed by the invention, the appropriate parts of the post-cast strip, the tunnel opening and the ramp of the structure are respectively provided with a reliable load-transfer member, so that a situation that in the process of support change construction, the main structure of the building is not damaged is ensured, wherein, the post-cast strip is provided with a rebar as the load-transfer member, and the tunnel opening and the ramp are respectively provided with a temporary floor; by using the building method, the safety of the foundation pit support can be effectively ensured, the deformation of the ground and the supporting pile can be effectively controlled, and the difficulty of engineering construction can be reduced; and the building method is rapid in construction progress, low in construction cost and high in engineering quality.
Owner:THE SECOND CONSTR ENG CO LTD OF CHINA CONSTR THIRD ENG BUREAU +3

Biological sandstone preparation method and device based on MICP (Microbial Induced Carbonate Precipitation) technology

The invention discloses a biological sandstone preparation method and device based on an MICP (Microbial Induced Carbonate Precipitation) technology. The preparation method comprises the steps as follows: step A: mixed sand, a bacterium growth media and a cementing nutrient solution are prepared; step B: the mixed sand, a bacteria solution and the growth media are mixed in proportion and put into a mold; and step C: the mold is placed on a support and immersed into the cementing nutrient solution for a reaction, the cementing nutrient solution contains urea, mineral calcium salt and a binder, and after the full reaction, the mold is removed, so that biological sandstones are obtained. According to the device and the method, the prepared biological sandstones are excellent in uniformity, high in strength and environmental-friendly; and the device is easy to use, so that the construction difficulty and the cost are reduced in practical engineering application, the practicability of the technology is improved, and practical application and popularization of the biological sandstones prepared by the MICP (Microbial Induced Carbonate Precipitation) technology are facilitated.
Owner:INNER MONGOLIA UNIV OF TECH

Extra-huge-volume concrete one-time continuous pouring multi-cycle real-time temperature control construction technology

The invention discloses extra-huge-volume concrete once continuous pouring multi-cycle real-time temperature control construction technology. Flow and flow rate of circulating water is automatically regulated by a concrete internal and external temperature real-time monitoring system. Hydration heat inside concrete is gradually reduced to balance the inside and outside temperature difference of the concrete, effectively prevent temperature difference stress inside and outside the concrete from generating a crack, and ensure that construction quality of "extra-huge-volume concrete" meets design and specification requirements. The extra-huge-volume concrete one-time continuous pouring multi-cycle real-time temperature control construction technology has the advantages of saving a lot of water resources, achieving green construction, and conforming to national energy saving and environmental protection policy orientation due to the fact that three communicated circulating water systems including water in a circulating pipe network, water in an entire storage thermal insulation maintenance pool of a base plate and recharge water come from a foundation pit rainfall and site rainwater collection system.
Owner:中如建工集团有限公司 +1

Transformation and construction method used for facing bare concrete of existing building outer wall

The invention discloses a transformation and construction method used for facing bare concrete of an existing building outer wall. The method comprises the steps of processing of a formwork, binding of reinforcing steel bars, installation of bare formwork, casting of the bare concrete, removal of the bare formwork, maintenance of the bare concrete, cutting of visible joints, blocking and repairing of split bolt holes and coating of protective paint. According to the method, a steel formwork of which the inner surface is attached to a stainless steel board servers as the bare formwork,, reinforcing steel bar meshes serve as structural bars, the self-compaction bare concrete serves as a bare concrete mixture, and the construction of a thin-type bare concrete faced wall is finished in the mode that many times of rolling over construction are conducted from the bottom to the top of the existing building outer wall. The method not only improves the appearance quality of the bare concrete, but also ensures close integration between the newly-cast bare concrete and the existing building outer wall.
Owner:WUDA JUCHENG STRUCTURE CO LTD

Construction device and construction method for stirring and spraying expanded reinforcement pile

ActiveCN106087999AIncrease resistance to horizontal thrustIncrease end resistanceBulkheads/pilesDrilling machines and methodsSpray nozzleHigh pressure
The invention provides a construction device and construction method for a stirring and spraying expanded reinforcement pile. The construction device is characterized in that a drill pipe is formed by coaxially overlapping an outer pipe body and an inner pipe body in a sleeving mode and provided with a rotary power mechanism, a lifting device and a variable-diameter telescopic stirring arm; the inner pipe body is provided with a spiral drill bit and a spraying nozzle, and high-pressure ejection, forced stirring, improvement on the drilling speed and adjustment of the specifications of a pile body and an expanded body are realized through the operations of arm folding, arm unfolding, rotating, high-pressure grouting and the like. The construction method is characterized in that the setting parameters and design scheme of the pile body and the expanded body of the reinforcement pile are designed in advance. The method includes the particular construction steps that (1) pile positions are aligned; (2) the expanded body and the pile body of the reinforcement pile are constructed in a mode A (from top to bottom) or mode B (from bottom to top) according to the advanced design; (3) the stirring and spraying expanded reinforcement pile which accords with the advanced design and is provided with the expanded body is formed; and (4) subsequent construction is carried out through multiple methods and includes manufacturing of a reinforcement body pile body and pile end carriers and laying of a cushion layer.
Owner:北京波森特岩土工程有限公司
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