209results about How to "Reduce the amount of construction work" patented technology

The invention discloses a whole-section front pre-grouting construction method. The method comprises the steps that concrete is used for pouring a blocked concrete wall with the thickness being 2.5-5m inside a face, and 2-4 rows of mortar anchors are adopted on the peripheral edge of the blocked concrete wall to be embedded into surrounding rock; a 8-10 m range is reserved behind the blocked concrete wall for leveling and compacting, and then a concrete layer is poured to be adopted as an application platform. A grouting hole is determined outside the counter line within the radial reinforcing range, an outer ring grouting hole final hole is within 4-6 m outside the excavated counter line, and the hole forming position and the final hole position of the grouting hole are distributed in anannular mode; the grouting hole is drilled, the diameter of the grouting hole is set to be 40-70 mm, the hole depth is set to be 5-30 m, multiple seamless steel tubes with the diameter being 35-50 mmcontinue to be ejected into the hole, the length of the seamless steel tubes is 3-5 m, 20-30 cm is exposed outside, the array pitch of the grouting hole is 1-1.5 m, and the grouting hole is formed ina quincunx mode. The single-hole water outlet amount is measured, and whether drill rod retrograding grouting or segmentation advanced grouting is adopted is determined according to the single-hole water outlet amount.

The invention provides a TBM pilot tunnel enlarging excavation method which is adopted in 20km dual-line dual-tunnel super-long tunnel construction, belonging to the building technical field of road, railway or bridge. The method is that a. two TBMs respectively with the diameters of 4.2m and 3.5m are adopted so as to excavate from the bottom center of the lower-end tunnel opening of the two parallel tunnels to the high-end direction of the tunnel to form two pivot tunnels A and B; b. enlarged excavation and lining operation are firstly carried out in the B pivot tunnel which passes through a tunnel-typed ventilation air exchange system and a communicated track delivering system which consist of the A pivot tunnel and a transverse passage; c. after the pivot tunnel A and the pivot tunnel B are interpenetrated, only two coal faces at the inlet and the outlet of A line are arranged; d. after the enlarged excavation in B line is completely achieved, 8-10 coal faces are opened to achieve the enlarged excavation of the A line. The invention has the advantages of fast construction speed, small construction operation quantity, economics and safety, has no damages or effects to the plants out of a mountain body, damaging slightly the self-flowing water system which is formed in the mountain body and protecting the around environment of the construction.

The invention discloses a fluidized coal and gas simultaneous mining system and a synchronous mining method of the system. The fluidized coal and gas simultaneous mining system comprises a hydraulic mining part, a shaft bottom coal and rock treatment part and a coal and rock transport part. Gas released in a hydraulic mining process can be extracted by a gas extraction pump through a gas extraction inclined hole formed in the top of a coal mining driller, a hydraulic mined coal and rock mixture can be subjected to coal and rock separation by the shaft bottom coal and rock treatment part and the coal and rock transport part and then transported upwards and out of a well in a classified manner, the hydraulic mining part and the shaft bottom coal and rock treatment part work respectively without influence to each other, and reliability and mining efficiency of the hydraulic mining process can be greatly improved; automatic work of manless mining can be realized, and mining safety of a coal and gas outburst coal seam is greatly improved; and the system is suitable for mining coal seam resources such as boundary coal and wandering coal seams with low coal content and complex geologicalconditions and is particularly applicable to coal mining of a soft and weak coal seam where coal and gas are prone to outburst.

The invention provides a single-component moisture curable polyurethane waterproof coating and a preparation method thereof. The single-component moisture curable polyurethane waterproof coating comprises the following raw materials by weight: 14-34 part of polyether 220, 4-14 parts of polyether 330, 6-26 parts of chlorinated paraffin, 0.1-1.5 parts of a dispersing agent, 1.0-2.5 parts of a wetting surfactant, 8-15 parts of talcum powder, 15-25 parts of heavy calcium carbonate, 0.1-1.5 parts of a pigment, 5-8 parts of kaolin, 2-8 parts of toluene diisocyanate (TDI), 0.5-2 parts of environment-friendly solvent, 0-0.5 part of dibutyltin dilaurate, and 0.8-1.4 parts of a latent curing agent. In the preparation process of the polyurethane coating, the wetting surfactant and the latent curing agent are added, so that even if a fundamental plane with a lot of dust is encountered in a construction process of the coating, sand holes and other problems cannot arise. Adding of the latent curing agent can prevent the coating from undergoing micro-foaming during construction.

The invention discloses a method for processing vehicle bump at a bridge head of an existing highway, and the method comprises the following steps: mixing lightweight materials at a construction site; drilling holes from embankment slopes on both sides of the highway, and automatically discharging soil outward from a threaded opening while rotatably drilling holes; after a designed depth reaches, rotatably and slowly pulling out a drill rod, and starting a booster pump so as to pump the lightweight materials into the obtained drill holes by virtue of a central tube of the drill rod; and jetting the lightweight materials from the central hole of the drill rod so as to gradually fill the hole from bottom to top, thereby replacing the filled soil of an embankment. The drill holes are arranged squarely or quincuncially on the side slope of the embankment, a certain included angle is formed between each drill hole and a horizontal plane, and the elevation of the opening of each hole is positioned below a pavement structure layer and above the underside of the filled soil of the embankment. By using the method disclosed by the invention, the weight of the embankment is greatly reduced, thereby reducing the settlement after construction caused by embankment loads and then effectively solving the problem of vehicle bump at bridge heads. During the construction period, the highway is not required to be closed, therefore, the normal traffic of the highway is not affected. The method disclosed by the invention is simple in construction process, convenient to operate, simple in equipment, economical, and high in efficiency.

The invention discloses an intelligent vehicle license plate recognition system. The system comprises an image acquisition unit, an intelligent analysis unit, a client unit and a database unit, wherein the image acquisition unit acquires vehicle images; the intelligent analysis unit is used for performing extraction, analysis and vehicle license plate recognition on the area of interest of the vehicle image; the client unit receives and displays the vehicle license plate recognition result; the database unit stores the vehicle license plate recognition result so as to compare with vehicle license plate data of a vehicle license plate data center, and comprehensively and effectively manages vehicles in a parking lot according to the recognized vehicle license plate information. The intelligent vehicle license plate recognition system has the advantages of low cost, strong real-time property and the like, and is easy to construct.

The invention discloses a use method of a self-moving type small sprinkling irrigation device suitable for garden sprinkling irrigation. The self-moving type small sprinkling irrigation device suitable for the garden sprinkling irrigation comprises a rack, a walking device and a sprinkling irrigation device, wherein the sprinkling irrigation device comprises a sprinkling irrigation reel, a sprinkling irrigation PE pipe, a pipe pressing mechanism, a water turbine integrated gearbox and spray nozzles; the walking device comprises a front wheel and a guide rail wheel. According to the use method of theself-moving type small sprinkling irrigation device suitable for the garden sprinkling irrigation, a water turbine is adopted to drive the whole device to realize sprinkling irrigation and self-recovery movement, sprinkling irrigation for garden vegetation is facilitated, furthermore, use flexibility is high, maintenance is convenient, a water transportation pipe network is not required to be pre-embedded in a garden sprinkling irrigation area, the problems about combination space of the spray nozzles and the like are not needed to be considered, besides, by means of a self-moving sprinkling irrigation mode, uniform distribution of water in soil subjected to the sprinkling irrigationcan be realized and uniform irrigation can be guaranteed on the premise of water resource saving, then garden construction quantity is reduced, construction cost is saved, and the method is particularly suitable for the garden sprinkling irrigation.

The invention discloses a construction method of one-side form bracing for underground structure sidewalls. The method includes the steps of installing a form which comprises a first side and a second side, with the first side close to an underground diaphragm wall; fixing one end of a waterproof tie bolt on the underground diaphragm wall through a connecting rebar; making a hole on the form, allowing the other end of the waterproof tie bolt to penetrate through the first side of the form and extend out of the second side of the form, and fixing with a nut on the second side; installing a plurality of form bracing structures according to stress need, casting sidewall concrete, and completing one-side form bracing for the underground structure sidewalls.

The invention relates to a coal bed gas exploiting technique, in particular to a process for pumping and exploiting coal bed gas by together using ground well drilling and underground hole drilling, solving the problem of low efficiency of the traditional method for pumping and exploiting the coal bed gas. The process comprises the following steps of: (1) carrying out well drilling on the ground; (2) carrying out long hole drilling in underground coal beds; (3) making drilled holes and ground drilled wells crosslink and communicate in the appointed points by utilizing an orientation technique of a long hole drilling machine; (4) effectively closing the underground long drilled holes; (5) fracturing the ground drilled wells and the underground long drilled holes by utilizing fracturing equipment on the ground; (6) after fracturing, closing the ground drilled wells; and (7) opening the closed ends of the underground long drilled holes and then installing relevant pumping and discharging pipelines connected with underground pumping and discharging systems. The process improves the pumping and exploiting speed and efficiency of the coal bed gas, shortens the construction period of coal bed gas pumping and exploiting engineering and saves the construction investment of the coal bed gas pumping and exploiting engineering.

A vacuum drainage system includes a vacuum pump group, a vacuum can, a vacuum trunk conduit, vacuum branch conduits, a biological filter, a dredge pump group, a plurality of collecting devices, a plurality of vacuum demarcation valves, and a control device. The biological filter, the vacuum pump group, the dredge pump group and the vacuum can constitute a vacuum power station, the intake port of the vacuum pump group is connected with the vacuum can through conduits as well as a stop valve; the aspirating pipe of the dredge pump group is connected with the vacuum can through conduits, and the discharging tube is connected with the water quality treatment plant or higher level pipe network; the vacuum trunk conduit is connected with the vacuum can and extends to the user site collecting device from the place, the plurality of collecting devices are distributed at each user site, which are connected to the vacuum trunk conduit through the vacuum branch conduits; the vacuum demarcation valves are mounted on the vacuum branch conduits; the control device is connected with liquid level detectors in the vacuum pump group, the dredge pump group as well as the collecting devices; pressure testing sensors in the vacuum demarcation valve and the vacuum can; and the like.

The invention discloses an automatic drug and to-be-inspected sample delivery system for a hospital. The system comprises a control center, a transport system, a receiving and sending system and a drug container, wherein the control center is connected with the transport system and the receiving and sending system; and the transport system adopts an aircraft for transportation. The invention furthermore discloses an automatic drug and to-be-inspected sample delivery method for the hospital. The method comprises the concrete steps that the aircraft at leisure waits in a holding apron of aircraft parking; drugs or to-be-inspected samples are put into the drug container and the drug container is put on a delivery table; the aircraft flies to the delivery table, the drug container is hung to the aircraft, and at the moment, a control system sets a target site; the aircraft delivers the drugs or the to-be-inspected samples to the target site; and the aircraft returns to the holding apron of aircraft parking for waiting. According to the delivery system and method, the drugs are delivered by using unmanned aerial vehicles, so that the problem of time and labor waste due to manual delivery is solved firstly and the construction is simple; and multi-thread parallel operation can be performed, so that compared with labor or vacuum tubes, a plurality of unmanned aerial vehicles not only are quick in delivery but also can perform coordinative operation.

The invention discloses a pressure resisting type air pipe air leakage preventing structure of a ventilation air conditioner system. The pressure resisting type air pipe air leakage preventing structure comprises a pressure resisting type sealing structure and a clamping structure. The pressure resisting type sealing structure comprises a pressure resisting type sealing strip located between two flange edges of an air pipe flange. The clamping structure comprises a clamping piece clamped on the two flange edges. The pressure resisting type sealing strip is a T-shaped sealing strip. The T-shaped sealing strip comprises a clamping strip and a limiting strip located at the bottom of the clamping strip. The pressure resisting type air pipe air leakage preventing structure is simple, reasonable in design, convenient to install, good in using effect and capable of effectively reducing the air leakage amount of an air pipe of the ventilation air conditioner system. Meanwhile, the invention discloses an air pipe joint machining method. The method comprises the first step of metal panel cutting, the second step of seaming machining, the third step of flange machining edge machining, the fourth step of pipe joint body panel bending and the fifth step of seaming joint closing and compacting. The machining method is simple in step, manufacturing is easy and convenient, the using effect is good, and the air pipe joint machining process can be easily, conveniently and rapidly finished.

The invention discloses a method for constructing a multi-functional metro interchange station complex, which comprises the steps of: performing high-pressure cement grouting on a foundation within design scope; construction of an underground reinforced concrete diaphragm wall; construction of a steel reinforced concrete underground grouting pile group; construction of well spacing pattern double prestressed steel fiber type ground structure floors; dryness of moisture in a soil body by stages; construction of a first underground floor; construction of a second underground floor; construction of an overhead platform metro shield tunnel, a bridge and an overhead platform; construction of a third underground floor; construction of a bottom platform metro shield tunnel, a bridge and a bottom platform; earthwork excavation under the bottom bridge and construction of column facing of the steel reinforced concrete grouting pile group; construction of steel reinforced concrete of a buttress type annular ground beam and steel reinforced concrete of a bottom inverted arch bottom slab; construction of bottom platform and overhead platform rails and the platforms; construction of a steel reinforced concrete light shaft and a steel reinforced concrete elevator shaft; construction of a ground floor; construction of a first floor; and construction of various pipelines, and installation and debugging of various equipment. The method has the advantages of less investment on the construction of metro interchange stations, short construction period, small construction quantity, high construction efficiency, and social resource economization.

The invention discloses a railway switch wayside control device and a railway switch wayside control method, wherein, the railway switch wayside control device is arranged beside the track and comprises a switch control module, a communication module and a power module; The turnout control module is used for connecting with the turnout switch machine, controlling the turnout switch machine and monitoring the state of the turnout switch machine. The communication module is electrically connected with the switch control module, and is used for sending out the state of the switch machine monitored by the switch control module, receiving control information, and transmitting the received control information to the switch control module. The power supply module provides power for the switch control module and the communication module. The switch control module controls the switch machine according to the control information. Therefore, the problem of real-time control and monitoring of switch machine caused by external disturbance signal of signal cable with long control distance is solved.

The invention provides a rapid plugging / pulling cable branching box. The branching box comprises a box body, three insulators, three copper bars, three connection wires, three T-shaped cable terminals, three straight line adapters and an insulation separation plate, wherein the insulators, the copper bars, the connection wires and the T-shaped cable terminals are arranged in the box body. Each of the straight line adapters comprises a conductive rod, an insulation layer, a rapid clamping head and a housing. One end of each of the straight line adapters is electricallyconnected with one T-shaped cable terminal in the box body correspondingly. The straight line adapters, the T-shaped cable terminals, the connection wires and the copper bars form a three-phase electric access. In use, the copper bars are correspondingly connected with three phase wires A, B and C of a ring main unit incoming cable. The straight line adapters are quickly clamped with rapid joints of three bypass cable joints via the rapid clamping heads. The branching box is simple in structure, low in cost and convenient to achieve. Laying distances of flexible bypass cables can be greatly reduced in use, so a difficulty in remote laying of power supply points and flexible bypass cables is solved and rush repair efficiency is increased.

The embodiment of the invention provides a shield starting base. The shield starting base comprises a supporting structure, shield machine guiding structures and shield machine moving structures, a shield machine accommodating groove is formed in the supporting structure in the axis direction of a tunnel, and a reaction frame accommodating groove is formed in the direction perpendicular to the tunnel axis; the shield machine accommodating groove is vertically arranged with the reaction frame accommodating groove to divide the supporting structure into two front supporting bodies and two rear supporting bodies, and the sides, close to the shield machine accommodating groove, of the two front supporting bodies and the two rear supporting bodies are in chamfered shapes; the shield machine guiding structures are symmetrically arranged on the chamfered surfaces of the two front supporting bodies and the two rear supporting bodies in the tunnel axis direction; and the shield machine moving structures are symmetrically arranged on the upper surfaces of the two front supporting bodies and the two rear supporting bodies in the tunnel axis direction. The shield starting base can reduce the construction cost and work quantity, the construction period can be shortened, and the supporting force to a shield machine can be improved.

The invention discloses a trapezoid ecological frame ditch which comprises a plurality of ditch unit segments with trapezoid cross sections, wherein the ditch unit segments are butted and laid in sequence to form a water diversion ditch; and each ditch unit segment adopts a frame structure with dense filling holes which are all filled with filling material. With a frame structure, the trapezoid ecological frame ditch can reduce the scour of running water to the side wall and the bottom of the ditch, and solves the problem that the exchange of matter energies in the ecological environment of a traditional ditch is blocked due to the sealing of the traditional ditch; and the frame structure of the trapezoid ecological frame ditch is convenient for construction, can shorten the construction period, reduces the construction amount, consumes a small amount of material, is stable and resistant to scouring, can increase the biomass of the wetland ecosystem of the ditch, realizes blockage, degradation, absorption and utilization of water pollutants, reduces and removes pollutants in water, and has better ecological functions.

The present invention relates to the urban roadway system and accompanying underground railway system, which provide the efficient use of limited constructible areas of the congested cities, and also relates to the traffic flow control system capable of the effective control of vehicular movements through the roadways. In the whole or partial areas of a city, the roadway network is constructed and connected in the honeycomb-like net structure. Compared with a typical tetragonal city, the hexagonal city of the present invention can reduce 22% of road extent, 63% of road area and 30% of constructible area in total, and the traffic flow can be improved enormously. The present invention also proves that the hexagonal roadway system enables vehicles to move in average 75% less time without meeting stop-signals by the synchronized signal system for traffic flow controls.

The present invention discloses a whole vehicle dynamic truck scale with a road surface to realize the accurate separation and dynamic weighing of multiple vehicles and different types of vehicles and improve weighing precision. The technical scheme is that according to the whole vehicle dynamic truck scale with a road surface, a foundation is horizontally arranged in the ground, a scale body is on the foundation, a weighing sensor base is fixedly arranged on the foundation, a weighing sensor is arranged at the upper end of the weighing sensor base, the weighing sensor is perpendicular to the horizontal plane, the lower end of a weighing sensor bracket is arranged on the weighing sensor, the upper end of the weighing sensor bracket is matched and connected to the lower end of a scale body assembly, an axle identifier is arranged on the scale assembly and the upper end face of the axle identifier is level with the upper end face of the scale body assembly, separators are arranged at two ends of the scale assembly, and the electrical signals collected by the weighing sensor, the axle identifier and the separator are transmitted to the electronic weighing instrument in a control cabinet. The whole vehicle dynamic truck scale is widely applied to the field of dynamic weighing.

The invention discloses a novel deepwater lake water restoring method through bubble plume dispersion oxygenation. In a water stratification period, a plume oxygenation jetting device is arranged at the bottom of a lake, an air source of the plume oxygenation jetting device is pure oxygen, bubbles jetted from the plume oxygenation jetting device and introduced water form air-water mixture, then the air-water mixture ascends to the maximum altitude before thermal stratification while the bubbles are continuously dissolved and disappear, sinking plume is formed due to density difference, oxygen-rich water diffuses all around and enters a distant water environment after the plume sinks to the balance depth, the hypolimnion is directly oxygenated, and the ascending velocity of the air-water mixture is 0.12-0.17m / s. The novel deepwater lake water restoring method through the bubble plume dispersion oxygenation is strong in pertinence; ascending bubbles are rapidly dissolved, the oxygen transfer efficiency is high, the oxygenation effect is good, and the operation difficulty and construction difficulty are greatly simplified; and the novel deepwater lake water restoring method through the bubble plume dispersion oxygenation has the characteristics of no disturbance on the thermal stratification, no damage of a lakebed cold water fish growth environment, high feasibility, low implementation risk and good water restoring effect.

The invention relates to a coal mine downhole self-propelled hydraulic jet tree-shaped drill hole guide device. The device comprises a drill rod, a guider, a drill bit and a dial. The drill rod is in threaded connection with the front end of the guider. The drill bit is in threaded connection with the tail end of the guider. A self-propelled drill bit connected with a high-pressure hose penetrates through the middle of the drill rod and then passes through the guider, the purpose of vertical guide to horizontal guide of the self-propelled drill bit is achieved, and finally self-propelled horizontal drilling is conducted on a coal seam. Horizontal steering of the guider is achieved by guider rotation driven by rotation of the drill rod, and the rotation angle is controlled by the dial. The dial is fixed to a chuck at the front end of the drill rod and the front end of a drilling rig. The device has the main effects that vertical guide to horizontal guide of the self-propelled drill bit along a guider track within a certain curvature radius is achieved, and then horizontal drilling of the self-propelled drill bit in the coal seam is achieved. The device is simple in structure, convenient to operate and mainly suitable for drilling tree-shaped drill holes in the gas extraction process of the low-air-permeability coal seam.

The invention discloses a control method of an intelligent garden sprinkling irrigation control system. The control method comprises steps including soil humidity detection and judgment, control of the sprinkling irrigation direction of a sprinkler, self-movement control of the sprinkler, sprinkling irrigation control of the sprinkler, completing of sprinkling irrigation and the like. According to the control method of the intelligent garden sprinkling irrigation control system, a central control computer is adopted for concentrated control, comparison and judgment are performed according to soil humidity data fed back by the soil humidity sensors, then a rotary platform of an angle rotation and positioning device is controlled to translate, rotate and position, so that a self-moving type small sprinkler is right aligned to a position requiring sprinkling irrigation, self-moving sprinkling irrigation is performed, garden plants can be subjected to sprinkling irrigation conveniently, use flexibility is high, maintenance is facilitated, a water transportation pipe network is not required to be pre-buried in a garden sprinkling irrigation area, spacing of combined spray nozzles and other problems do not need to be considered, garden construction work amount is reduced, water is uniformly distributed in irrigated soil in a self-moving sprinkling irrigation manner on the premise that water resources are saved, and the control method is especially suitable for garden sprinkling irrigation.

The invention discloses a construction method of a suspension type steel-structured lighting skylight. The construction method comprises the following steps: (1) assembling a lighting skylight steel structure, wherein the lighting skylight steel structure comprises a steel-structured net frame and a pre-stress truss supported on the lower surface of the steel-structured net frame; (2) carrying out first time of pre-stress tensioning on a pre-stress inhaul cable of the pre-stress truss; (3) hoisting the whole body of the lighting skylight steel structure to a pre-set height and suspending the lighting skylight steel structure on a supporting structure; (4) tensioning the a pre-stress inhaul cable of the pre-stress truss to a designed value. The steel-structured net frame is assembled module by module through adopting a horizontal slippage and jacking manner, the problem that the steel-structured net frame has relatively great weight and cannot be wholly hoisted can be avoided. By adopting a modularized assembling method, construction procedures also can be arranged by adopting a flow line manner, so that the construction time is saved. Each strip-shaped unit is assembled on the surface of a fifth floor, so that the construction engineering quantity of a supporting system and an operation platform is obviously reduced.

The invention discloses an intelligent sprinkler irrigation control system for a garden. The system comprises a pressure water supply device, an angle rotation locating device, a self-moving small irrigator, a soil humidity monitoring device and an electronic-controlled device. The intelligent sprinkler irrigation control system for the garden adopts a central control computer for centralized control, after comparison and judgement are conducted according to soil humidity data fed back by soil humidity sensors, translation and rotation and locating of a rotating platform of the angle rotation locating device are controlled according to garden coordinate information preset by a program and coordinate information of the soil humidity sensors to make the self-moving small irrrigator right opposite to the position needing to be irrigated, self-moving sprinkler irrigation is conducted, sprinkler irrigation can be conducted on garden vegetation conveniently, the use flexibility is high, maintenance is convenient, a water transportation pipe network does not need to be embedded in a garden sprinkler irrigation area, the problems such as spray head combination space do not need to be considered, the garden construction engineering quantity is reduced, by means of the self-moving sprinkler irrigation mode, on the premise of saving the water resource, uniform distribution of water in sprinkler irrigation soil is achieved, the system is especially suitable for garden sprinkler irrigation.

The invention discloses a prefabricated frame structure and a cascaded prefabrication construction method thereof. The prefabricated frame structure comprises stand columns (1), main beams (2) connected with the stand columns (1), secondary beams (3) connected with the main beams (2), and floors (5). Prefabricated members are adopted as the main beams (2) and the secondary beams (3) and are provided with reserved exposed steel bars. The floors (5) are laminated slabs, prefabricated slabs (51) are adopted for the lower portions of the floors (5), and concrete is cast on the tops of the prefabricated slabs (51), the main beams (2) and the secondary beams (3) on site so as to connect the prefabricated slabs (51), the main beams (2) and the secondary beams (3) together. By means of the prefabricated frame structure and the cascaded prefabrication construction method thereof, the on-site construction workload can be reduced more effectively, on-site slab nailing can be greatly reduced, and pollution and waste can be reduced; besides, manpower resources are greatly saved; the construction efficiency is effectively improved, and thus the construction period is shortened.

The invention belongs to the technical field of air-conditioning cooling and heating machines, in particular to an air source cooling and heating machine. The air source cooling and heating machine comprises an outdoor heat exchanger 5; wherein the outdoor heat exchanger 5 adopts an annular structure; a baffle 34 is arranged at the annular notch portion of the outdoor heat exchanger; a lining fiber 7 is arranged on the lower part of a cavity of the outdoor heat exchanger 5, and a compressor 8, a reversing valve 6 and a throttling part 9 are wrapped by the lining fiber 7; an outdoor exhaust fan18 is arranged on the upper part of the outdoor heat exchanger 5; and a solar heat absorbing coating is arranged on the outdoor heat exchanger 5. The air source cooling and heating machine has a large heat dissipating surface area per unit volume, can receive the heat of sunlight without frosting during work, and has high work efficiency and low noise, indoor air dehumidification water is used for condensation and heat dissipation in summer, defrosting water is used for indoor humidification in winter, the functions of waste heat for heating water, exchanging of fresh air and automatic cleaning are achieved, and the air source cooling and heating machine is suitable for carbon dioxide circulation

The invention discloses a construction method for an ultra-high-performance concrete corrugated steel web composite box girder bridge. The construction method comprises the steps that a U-shaped groove structural part of each span of box girder is prefabricated according to the design requirements at first; a bridge floor middle plate is prefabricated according to the prefabricated U-shaped groove structural part; a bridge abutment and a bridge pier are constructed, the prefabricated U-shaped groove structural part and the bridge floor middle plate are hoisted in position, transverse connecting steel bars are bound, and after transverse wet joints are poured, the complete box girder is formed; the next bridge pier is constructed, a second box girder is hoisted in position, corrugated steel webs of the adjacent box girders are welded, longitudinal connecting steel bars between the adjacent box girders are bound, longitudinal wet joints between the adjacent box girder segments are poured or a cross girder is casted in place, and a continuous bridge structure is formed; after wet joint concrete reaches the designed strength value, top plate prestressed steel strands are tensioned; and the above steps are repeated, so that the multi-span continuous bridge structure is completed. According to the construction method for the ultra-high-performance concrete corrugated steel web composite box girder bridge, the box girders are light in weight and small in torsional distortion, the bridge floor plate load distribution capacity is good, construction and erection are convenient, and the construction method has wide application prospects in large and middle span bridges.

The invention discloses an existing-road-crossing cast-in-situ trough beam three-point sliding jacking construction method. The method comprises steps of 1, pier and temporary pier construction; 2, slideway beam erection; 3, horizontal crossbeam layout; 4, trough beam cast-in-situ construction; 5, traction device installation; 6, jacking; 7, beam dropping. According to the method, design is reasonable, construction is easy, and the use effect is good; two back slide beams and one front slide beam are used for forming a three-point longitudinal passage, and horizontal cross beams are laid at the bottoms of the front end and the back end of the cast-in-situ trough beam respectively, the problem that deformation of the slide beams on the to sides is asynchronous in existing-road-oblique-crossing cast-in-situ trough beam jacking construction can be effectively solved; in addition, temporary piers are constructed on the two sides of an existing road in the cross bridge direction respectively, the temporary pier construction workload can be effectively reduced, and the cost can be effectively reduced; meanwhile, the influence on use of the existing road can be effectively reduced or evenavoided.

The invention belongs to the technical field of concrete prefabricated floor slabs, and discloses an assembled prefabricated floor slab and a construction method thereof. The assembled prefabricated floor slab comprises a superposed beam and a prefabricated floor slab body spliced by unit board blocks arranged horizontally; connecting grooves are formed in the edges of at least two sides of each unit board block, are located on the upper surface of each unit board block, and are arranged at intervals in the side length directions, a groove segment is formed between two adjacent connecting grooves, the lower surfaces of the groove segments are flush with the lower surfaces of the unit board blocks, and the upper surfaces of the groove segments are not higher than the upper surfaces of the unit board blocks; connecting plates are arranged on the edges of other sides of the unit board blocks; the sides in which the connecting grooves of two adjacent unit board blocks are located are located on the top of the superposed beam and are fixedly connected to the superposed beam through first cast-in-place structures, and transverse reinforcements and ingroove connecting reinforcements are arranged in the first cast-in-place structures; the sides in which the connecting plates of two adjacent unit board blocks are located are oppositely arranged and connected through second cast-in-placestructures. The assembled prefabricated floor slab has good waterproof performance and sound insulation performance, the prefabrication rate is high, and the construction is efficient and convenient.

The invention discloses a formwork support for a cast-in-place concrete plate and relates to formwork engineering of concrete plates. The construction workload of a support system is reduced by adopting a matching tool type bent frame system taking a hybrid structure convenient to assemble in site and locally disassemble as a main framework as the formwork support, hinging combined parts of the hybrid structure by utilizing pre-stress by virtue of a connection structure of a semi-hinge groove, a fixed hinge shaft and a movable sleeve, finely adjusting the lifting of a main structure by using a mechanism frame foundation and adopting the application of strong-stiffness and high-strength support of the hybrid structure to a strong-stiffness large edge. The formwork support is simple in structure, simple and convenient in construction and capable of improving the supporting effect, greatly shortening the operation hour and the time limit of a subentry project and reducing the usage amount of a member material. The formwork support supports local support and early removal of a formwork, and the turnover rates of the formwork and a supporting member are increased. The working reliability of the support system is high, and the fine adjustment for the lifting of the main structure, realized by using the frame foundation, is simple in operation and precise in size, so that the construction quality and safety are ensured.