320results about How to "Realize the construction" patented technology

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.

The invention relates to a drilling mechanism and a drill loader. The drilling mechanism comprises a drilling arm and a bracket mounted on the drilling arm, a sliding frame is slidably arranged on the bracket, a sliding frame telescopic oil cylinder is arranged in the sliding frame, a positioning tip is fixed at one end of the sliding frame telescopic oil cylinder, the other end of the sliding frame telescopic oil cylinder is fixed in the sliding frame, and a brazing tool is fixed on the positioning tip. The telescopic oil cylinder is arranged in the sliding frame, and after the sliding frame telescopic oil cylinder extends, the long brazing tool can be mounted on the positioning tip on the end portion of the sliding frame to meet requirements on deep-hole drilling in engineering construction; after the sliding frame telescopic oil cylinder shortens, the length of the sliding frame can be greatly reduced, requirements on drilling of a top anchor rod hole by erecting the sliding frame in limited tunnel space can be met, drilling range is widened, and practicability is improved.

The invention discloses a construction method of a bare concrete prefabricated box beam with a complicated structure. The construction method comprises the following steps: (1) preparing for construction; (2) processing a foundation; (3) measuring and paying off; (4) mounting a bracket; (5) paving a bottom die; (6) prepressing the bracket; (7) binding a steel bar framework; (8) constructing by a corrugated pipe; (9) mounting a side die board; (10) supporting an outer side die board; (11) mounting a core die; (12) pouring bare concrete; (13) carrying out concrete maintenance; (14) mounting a support; (15) treating the surface of a beam plate; and (16) removing the die. According to the method disclosed by the invention, construction steps are simplified and the construction period is shortened; the construction of the bare concrete prefabricated box beam with the complicated structure is realized, and materials are saved and labor hours are shortened; and the construction quality is improved, and the economic benefits and the social benefits are obvious.

The invention relates to a dynamic dragging and constructing module system with a 3D virtual element for an on-line exhibition, which comprises a network server, a client side computer and an Internet, wherein the network server is provided with a fire wall and is respectively connected with an organizer client side, an exhibiter client side and an audience client side by the Internet, and a virtual system of the on-line exhibition is constructed. The dynamic dragging and constructing module system is characterized in that the 3D virtual element which can be dynamically dragged and constructedfor the exhibition is stored in the network server and is a set of 3D virtual models which are manufactured based on the WEB3D of an X3D standard, the models are decomposed into different X3D subprogram bodies by aiming at the type of a virtual object to form a module icon library, icons are utilized to drag the 3D models so as to quickly construct a tableaux, and an individuation 3D virtual space is automatically generated. The invention solves the problems of singleness, independency, lower efficiency and the like of the prior method for constructing the on-line exhibition, reproduces the advantages of fullness, visualization and spatial impression of an entity exhibition vividly and forms man-machine interaction, man-network interaction and virtual-real interaction effectively.

The invention relates to a hydraulic self-moving steel mould trolley and a construction method of the hydraulic self-moving steel mould trolley. The hydraulic self-moving steel mould trolley is used for full-section circular tunnel concrete lining construction. The hydraulic self-moving steel mould trolley comprises a trolley moving device, a trolley structural frame, a steel structure combination formwork and a hydraulic control device, the trolley structural frame is arranged on the trolley moving device, the trolley structural frame is movably connected with the trolley moving device, the steel structure combination formwork is arranged in the trolley structural frame, the steel structure combination formwork is hinged to the trolley structural frame, and the hydraulic control device is used for controlling the hydraulic self-moving type steel mould trolley. The hydraulic self-moving steel mould trolley is simple in structure, convenient to install, strong in adaptability and capable of carrying out demoulding on concrete at the bottom of the tunnel at first and repairing concrete construction defects in time.

The invention provides a fabricated curtain wall overall lifting installation construction method based on BIM model construction technical support. The method comprises the steps: carrying out the grid division of a vertical surface of a building curtain wall through the Rhino software technology and three-dimensional setting-out; using MATHCAD calculation modeling software for constructing a structural stress analysis model of a whole single-truss assembled curtain wall aluminum plate steel truss; processing and assembling a single assembled curtain wall truss keel in a production place; re-checking the position where the assembled curtain wall is to be installed, and integrally hoisting the single assembled curtain wall after the re-checking is errorless; integrally lifting and mountingthe assembled curtain wall; and then cleaning gaps between the plates, injecting silicone weather-proof sealant, and finally completing construction of the integrally-assembled curtain wall, and delivering the integrally-assembled curtain wall to be checked and accepted. The construction method is mainly suitable for building curtain wall places with ultra-high, ultra-difficult, large span and short construction period.

The invention discloses a formwork and bracket combining structure of a vase pier of a viaduct and an application method, and belongs to the field of construction of vase piers of urban viaducts. The formwork and bracket combining structure comprises a lower bracket, a curve section formwork bracket, an upper bracket, cover beam side formwork brackets and a cover beam bottom formwork bracket, wherein the lower bracket is mounted at the tops of straight line section formworks for allowing straight line section pier columns to be cast; the curve section formwork bracket is arranged on the lower bracket and used for allowing curve section formworks to be mounted; the upper bracket is mounted at the tops of the curve line section formworks for allowing curve line section pier columns to be cast; the cover beam side formwork brackets and the cover beam bottom formwork bracket are arranged on the upper bracket and used for allowing a cover beam formwork to be mounted. Through the design of the formwork and bracket combining structure and the combination between the formwork and bracket combining structure and a corresponding application method, the construction of the vase pier can be perfectly realized, and the formwork and bracket combining structure and the application method do not need to occupy a large construction region space, so that the pass of construction vehicles is facilitated. The formwork and bracket combining structure further has the advantages of being simple in construction, convenient to use, safe in structure, economical, reasonable and the like, can reflect normalized and standardized construction, and has high economic benefits and high social benefits.

The invention relates to a technology of millimeter wave wireless communication and specifically relates to a 7-mode gain and output power controllable K-band power amplifier. The K-band power amplifier comprises a power supply, a control power supply, a Vdd end, a Vb end, control ends Vc1, Vc2 and Vc3, an input end, an output end and an earth wire. The Vdd end and the earth wire are in bridge joint with a positive end and a negative end of the power supply. The Vb end is connected with a bias voltage. The control ends Vc1, Vc2 and Vc3 are connected with the positive end of the control power supply. The K-band power amplifier also comprises a first Balun, a first input matching circuit, a second input matching circuit, a first drive circuit, a second drive circuit, an interstage matching circuit, a gain control stage, an interstage transformer transformer, a power-stage circuit, a first output matching circuit, a second output matching circuit and a second Balun which are connected in sequence. The amplifier is characterized by controllable 7-mode power and gain pseudo number, high power gain and high output power. The amplifier is low in transmission loss, low in phase error, low in return loss and high in port isolation degree.

The invention relates to a consolidating type indoor stepless decorative wall, which comprises a supporting frame composed of a plurality of longitudinal supporting columns and a plurality of transversal connecting rods connectedly arranged between the longitudinal supporting columns and a wall plate installed and arranged on the supporting frame, wherein, and the longitudinal supporting columns are composed of a plurality of longitudinal unit columns through the head to trail telescopic connection of the longitudinal connecting parts; taking-up parts used for being connected with the wall plate are arranged on the transversal connecting rods; installing parts used for being matched and connected with the taking-up parts are arranged at the upper end and the lower end of the wall plate. The invention provides a complete and brand-new indoor wall decorating mode, any construction to the wall is not required at site, the proper modularization parts can be conveniently chosen at site to form the decorating wall, thereby ensuring the users to conveniently adjust the indoor environment according to own interest, the defect existing in the traditional indoor wall decoration is overcome, and the various requests to the indoor wall decoration brought forward by the modern society is fully satisfied.

The invention discloses a tensioning and anchoring device for prestressed fiber cloth reinforced beams and a construction method of the device. The device comprises fixed supports, a fixed end anchorage device, a tensioning end anchorage device, clamping pieces, short anchoring screws, long anchoring screws, chemical bolts, fiber cloth, a prestress application frame and a jack, wherein the fixed supports, the fixed end anchorage device and the tensioning end anchorage device are cuboid; the fixed supports are fixed with a to-be-reinforced beam through the chemical bolts; the fixed end anchorage device and the tensioning end anchorage device are connected with the fixed supports through the short anchoring screws and the long anchoring screws respectively; a rectangular through seam allowing the fiber cloth to pass is formed in the fixed end anchorage device; wedge-shaped holes allowing insertion of the clamping pieces are formed in the tensioning end anchorage device, and the clampingpieces are wedged into the wedge-shaped holes, so that clamping of the fiber cloth is realized. The construction method comprises steps as follows: firstly, the anchorage devices are mounted, then thefixed supports are assembled and the anchorage devices are fixed, finally, the prestress application frame and the jack are mounted, and tensioning and anchoring are implemented. The device is reasonable and simple in structure and convenient to operate and can be reused, and the applied prestress is large.

The invention relates to a transmission electron microscope sample loading net, which pertains to the measurement field of nano-materials. The invention includes a support part and a circuit part, the support part includes a metal ring (1), the circuit part includes two electrodes (2), an element which is ready to be measured and a phase change material amorphous thin film (5), the electrodes (2) are insulatedly bonded with the metal ring (1), the phase change material amorphous thin film (5) is evenly distributed between the two electrodes (2), the phase change material thin film (5) is amorphous, the element which is ready to be measured is positioned in the phase change material amorphous thin film (5) or is integrated on one electrode (2). The connection lines in the invention are characterized by erasable property, the higher voltage is added on the both ends of the electrodes, or the loading net is directly done with certain laser pulse irradiation, so the phase change material thin film is completely amorphous, the formed current path disappears, the optional and repeated erasable properties of the measurement circuit are realized.

The invention discloses a network area traffic compressing and distributing system based on virtual link exchange. In a system master control unit, a graphical method is used for realizing customization of a network scene by designing network topology, delineating a flow simulation area and configuring a virtual link path; the flow characteristic of an area network is determined through analyzing the network scene to realize the automatic generation of flow exchange configuration; the boundary flow of the area network is simulated by realizing the transceiving of an aeroelectronic full duplex switched Ethernet protocol data frame through the driving of a NPF (Netgroup Packet Filter) protocol, so as to realize the compression generation of the flow; and an auxiliary exchange unit realizes transit flow forwarding by capturing and analyzing the converged output flow of an exchange unit. A port-based VLAN (Virtual Local Area Network) dividing technology is adopted in the exchange unit for logically grouping ports to realize the isolation of reports at a data link layer; and a fixed router is configured to enable the exchange unit to forward data according to a VLAN mapping relationship between a fixed MAC (Media Access Control) address table and the ports, so that the injection distribution and transit forwarding of the flow are realized.

The invention discloses a cage type multi-shaft optical system mounting rack and relates to an optical system mounting and adjusting mechanism, for solving the problem that the conventional optical element mounting rack is not applicable to multi-optical axis systems. When the mounting rack is used, guide rods, optical element mounting racks and support columns are assembled together as required; the guide rods sequentially pass through guide rod mounting holes of a plurality of optical element mounting racks, so as to achieve the multi-shaft optical system structure; when 45 degrees reflection is formed in a light path, the support columns can be fixed on one optical platform and penetrate through optical element mounting holes of one or more optical element mounting racks, and spreading of the light along the direction perpendicular to the optical platform is realized. As the heights and the direction of all the shafts of the mounting rack can be flexibly adjusted, the mounting rack can be easily used together with other devices or systems of different heights, the optical system is compact in structure; establishment of the multi-shaft optical system in a plane and the establishment of the multi-shaft optical system in a space are achieved. The mounting rack is applicable to establishment of multi-shaft optical systems.

The invention discloses a fabricated steel structure beam and column joint capable of consuming energy in an earthquake. The fabricated steel structure beam and column joint comprises a column with asleeve, a steel beam, cross-shaped bolt sliding grooves formed in the connecting face of the sleeve and the steel beam, a high-strength bolt for connecting the steel beam with the column, and rubber damping pads arranged in the sleeve. The column with the sleeve and the beam end are connected together through the high-strength bolt; the rubber damping pads are arranged in the sleeve and located onthe contact surface of the beam end and the column, the beam end impacts the rubber damping pads in the earthquake, and thus damage of impact between components to the structure is reduced; and the column with the sleeve is prefabricated through a factory, the bolt sliding grooves can be formed in the top face, the bottom face, the front face and the rear face of the sleeve according to beam andcolumn connection needs, under the earthquake effects of different directions, the bolt can slide in the different directions of the cross-shaped sliding grooves, and thus the purpose that the joint can consume the energy under the earthquake effects of the different directions is achieved.

The invention discloses a 100% low-floor tramcar trailer body and an assembling method thereof. The trailer body comprises a bottom frame, an end wall, a roof and a sidewall; the sidewall is riveted with the roof and the bottom frame; the end wall is riveted with the roof and the bottom frame; the end wall is riveted with the sidewall. The 100% low-floor tramcar trailer body is simple in structure, light in weight, convenient and quick to assemble at different places, reliable in performance, and high in repairability; four modules, namely, the bottom frame module, the end wall module, the roof module and the side wall module are riveted to form a frame structure, thus the overall intensity and rigidity of the trailer body are ensured, and the difficulty of trailer body assembling process is lowered down; any damaged module can be replaced individually; the four modules can be individually easily transported for plant at different place, and the four modules can also be quickly integrated at different places, thus the transportation cost is decreased, and the working efficiency is improved.

The invention discloses a wall bushing prefabricated block-based wall bushing construction method which comprises the following steps: 1, preparation for construction; 2, construction of a wall bushing prefabricated block; 3, construction of a wall body. According to the wall bushing prefabricated block-based wall bushing construction method, by direct bricklaying of the wall bushing prefabricated block into the wall body during bricklaying of the wall body, construction of a wall bushing is realized; therefore, template supporting and protection and later hole filling are avoided, the construction procedures are reduced, the construction speed is increased, loss of a masonry material is lowered, the labor intensity of personnel is reduced, and the labor cost is reduced; the wall bushing prefabricated block-based wall bushing construction method has small impact on the wall body.

The invention discloses an end-to-end dialogue oriented data enhancement method based on statement rewriting, and relates to a data processing method. At present, on-site enhancement is difficult to realize overall optimization of a system level. According to the end-to-end dialogue oriented data enhancement method, training data of a dialogue generation model is expanded by constructing and training a statement rewriting model, and training reference of the statement rewriting model is constructed by defining a dialogue function of user statements; and a framework based on sequence-to-sequence is adopted, two decoders are used for sequentially decoding a previous round of system dialogue actions and a rewritten user statement, and the previous round of system dialogue actions can providea dialogue historical background for rewriting of the user statements, so that the generated rewritten statements better conform to a dialogue context. By means of the end-to-end dialogue oriented data enhancement method, an attention mechanism is added between decoders of the statement rewriting model and the dialogue generation model, so that an end-to-end dialogue system is built, the rewrittenstatements can directly assist dialogue generation, and meanwhile, a dialogue generation result can further supervise training of the statement rewriting model.

The invention discloses a column [5] aromatic hydrocarbon monomer containing a diyne functional group and a homo-polymer thereof and a preparation method. The column [5] aromatic hydrocarbon modifiedby the diyne functional group has a structure as shown in formula (I), and the homo-polymer of which the side group is the column [5] aromatic hydrocarbon has a structure as shown in formula (II). This is the first case that the column [5] aromatic hydrocarbon is modified with the diyne functional group and the column aromatic hydrocarbon polymer is obtained by a translocation cyclization polymerization method. The main chain of the polymer is polyacetylene, so that the polymer has certain conductivity; and the side group contains a large number of column aromatic hydrocarbon host molecules, so that the polymer can be further combined with guest molecules to build a supramolecular platform based on the column aromatic hydrocarbon polymer. The preparation method overcomes the difficulty that the column aromatic hydrocarbon monomer is difficult to form the homo-polymer, the polymerization time is greatly shortened, and the polymerization efficiency is improved.

The invention discloses a leveling head which comprises a telescopic beam, a rotary connector, a leveling head transverse beam, a spiral stirring distributing tank and a screeding plate. The telescopic beam, the rotary connector, the leveling head transverse beam, the spiral stirring distributing tank and the screeding plate are sequentially arranged from top to bottom, the rotary connector is arranged below the front end of the telescopic beam, the leveling head transverse beam is horizontally fixedly connected to the lower end of the rotary connector, and the middle of the leveling head transverse beam is fixedly connected with the lower end of the rotary connector; double outlet-rod cylinders are respectively vertically fixedly arranged at two ends of the leveling head transverse beam; the tops of lower piston rods of the double outlet-rod cylinders are movably hinged to the top of the spiral stirring distributing tank; screeding plate lifting cylinders are respectively arranged on two sides of the centers of the side walls of the spiral stirring distributing tank, and piston rods of the screeding plate lifting cylinders downwardly extend; guide plates are respectively arranged on the side walls of the spiral stirring distributing tank, vertical guide grooves are formed in the guide plates, connecting frames are vertically slidably clamped on the guide grooves, the upper ends of the connecting frames are movably hinged to the tops of the piston rods of the screeding plate lifting cylinders, and the bottoms of the connecting frames are fixedly connected with the screeding plate.

The invention discloses a municipal road construction surrounding baffle mounting structure. The municipal road construction surrounding baffle mounting structure comprises a wire pulling device, an engineering truck and a barrier. The municipal road construction surrounding baffle mounting structure is characterized in that the engineering truck is connected with the wire pulling device through atraction device; the barrier is an integral plate, and the top of the barrier is provided with a hook for hooking a steel wire rope; the front section of the engineering truck is provided with a pushing arm, the pushing arm is connected with a hydraulic push rod fixed on the engineering truck, a baffle is arranged at the position where the hydraulic push rod is in contact with the pushing arm, the middle section of the engineering truck is provided with a conveying belt, the rear end of the engineering truck is provided with a frame body, and the side edge of the frame body is provided with adoor frame; the frame body is provided with driving wheels driven by a motor, the driving wheels are arranged above the discharge end of the conveying belt, the driving wheels drive auxiliary wheelsto rotate, and a first barrier conveying belt is arranged above and below the auxiliary wheels. The municipal road construction surrounding baffle mounting structure has the beneficial effects that asemi-automatic machine is designed and applied to rapid installation of a surrounding baffle, by the device, the surrounding baffle is constructed and disassembled mechanically, the speed is high, thedegree of automation is also high, manual operations are reduced, the labor cost is lowered, the safety is high, and thus, the municipal road construction surrounding baffle mounting structure is suitable for being popularized and used.

The embodiment of the invention provides a machine learning model building method and device and related equipment, and the method executed by a mobile terminal comprises the following steps: loadingan operation page which displays a plurality of algorithm assemblies; responding to a selection operation instruction, displaying a target algorithm component selected from the plurality of algorithmcomponents on the operation page; sending an algorithm component selection notification corresponding to the selection operation instruction to a platform server, so that the platform server determines the selected target algorithm component; and in response to a configuration operation instruction for a target algorithm component, sending an algorithm component configuration notification corresponding to the configuration operation instruction to a platform server, so that the platform server forms a corresponding machine learning model according to a configuration result of the target algorithm component indicated by the algorithm component configuration notification. According to the embodiment of the invention, convenient machine learning model building can be realized.

The invention provides a modularized programmable on-chip system experimental device for a robot. The modularized programmable on-chip system experimental device comprises a control core board, an interface expanding board, a drive module, a sensor module and a plurality of connecting assemblies, wherein the plurality of connecting assemblies are assembled to form a robot framework; the control core board, the interface expanding board, an implementation module and the sensor module are respectively mounted on the plurality of connecting assemblies; data transmission between the interface expanding board and the control core board is realized; the control core board comprises a processor and a storage unit, which are used for processing and storing data uploaded by various external equipment connected to the sensor module and the interface expanding board, and sending a corresponding control instruction; and the implementation module is used for driving an implementation motor to complete specified action after carrying out power amplifying according to the control instruction of the control core board. According to the modularized programmable on-chip system experimental device, corresponding experiments can be carried out according to needs of a user, a related sensor is combined, and a robot platform is established, so that the design of a hardware platform is more flexible, and the development of a robot software platform is quickened.

The invention discloses a prefabricated bridge deck expansion joint connection member, a manufacturing method and a construction method of the prefabricated bridge deck expansion joint connection member. The prefabricated bridge deck expansion joint connection member comprises an upper end ECC cement-based composite material layer, an FRP fiber reinforced composite grating and a lower end ECC cement-based composite material layer which are sequentially arranged from top to bottom in a stacked mode. The upper end ECC cement-based composite material layer and the lower end ECC cement-based composite material layer are arranged in a staggered mode in the vertical direction. The upper end ECC cement-based composite material layer, the lower end ECC cement-based composite material layer and the FRP fiber reinforced composite grating are poured together. The prefabricated bridge deck expansion joint connection member has the advantages that the structural design is novel, the toughness is high, the expansion joint deformation resistance is high, the anti-seepage capacity is good, and the service life of a bridge deck can be effectively prolonged. The manufacturing method of the prefabricated bridge deck expansion joint connection member can effectively produce and manufacture the prefabricated bridge deck expansion joint connection member. The construction method of the prefabricated bridge deck expansion joint connection member can effectively achieve construction of the prefabricated bridge deck expansion joint connection member.

The invention discloses a road safe operation construction barrier structure comprising a traction platform. Hydraulic supporting legs are mounted on the lower portion of the traction platform, and the traction platform is divided into a front-section vehicle body and a rear-section vehicle body. The road safe operation construction barrier structure is characterized in that fixing piles are mounted at the four corners of the traction platform, and reels are mounted on the fixing piles, wherein each fixing pile is provided with the two corresponding reels, the horizontal heights of the reels on all the fixing piles are the same, and steel wire ropes are connected between the reels with the same horizontal heights and on the two fixing piles located on the same side. The road safe operation construction barrier structure has the beneficial effects that the structure is specially applied to rapid mounting of a fence plate; through the road safe operation construction barrier structure, mechanization of constructing and detaching of the fence plate is achieved; and the speed is high, the automation degree is high, manual operation is reduced, the labor cost is reduced, safety is high, and the structure is suitable for application and promotion.

The invention discloses a Ka-waveband phased array antenna, which comprises an antenna assembly and a TR assembly, and is characterized in that a. A plurality of TR modules included in the TR assemblyform a transceiving channel corresponding to the antenna assembly.; the The antenna also comprises a feed network and a channel assembly. The and also comprises a wave control assembly which is usedfor receiving external wave beam pointing information and controlling the antenna assembly and the TR assembly to adjust wave beam parameters; the antenna assembly comprises a plurality of sub-arrays,and the wave control assembly controls part of the sub-arrays to transmit and receive continuously or all the sub-arrays to transmit and receive. According to the invention, aA mode design thought isimplemented, the modular design is carried out on each part, and the one-dimensional / two-dimensional active phased-array antenna can be quickly built by utilizing the shared modules.

The embodiment of the invention discloses a test method and device based on a camera application. The method includes the following steps: generating image data of a virtual object including a targetto be tested according to a preset test condition and acquired target image data; merging background image data in a scene library with the image data of the virtual object to generate image data of an application scene to be tested that is consistent with a data format actually shot by a camera of a terminal to be tested; and sending the image data of the application scene to be tested to an application to be tested, and testing the data. According to the test method and device based on the camera application provided by the embodiment of the invention, the non-artificial simulation of various complex scenes and the scenes with different test requirements can be achieved, and thus the application to be tested can be be fully tested.

The invention relates to an existing double-track railway route position reconstruction method. The existing double-track railway route position reconstruction method comprises the following steps ofusing a mode of adjusting both a broken line and a curve to form a curve adjusting computing unit after collecting track centre and construction clearance position data in field operation; determininga left line theoretical straight line edge, constructing a right line theoretical straight line edge and building an adjusting curve; determining a left line curve element and a right line curve element by using systems such as left line through adjusting mileage, right line through adjusting mileage, right line projection mileage and so on and following principles that track lining quantity, construction clearance and track center distance widening value satisfy professional design requirements and design element thresholds and working record elements are taken into consideration; and forming an existing double-track railway mathematical theoretical center line to realize the existing double-track railway route position reconstruction. The existing double-track railway route position reconstruction method has the advantages that difficult problems in existing railway survey, design, construction, operation and maintenance aspects are solved; and wide referential values are obtained for retesting data processing of the existing railways, such as high speed railway, interurban railway, urban rail transit and so on, and construction units, railway working maintenance departments andsubway working maintenance departments.

The invention discloses a building monitoring method based on BIM. The method comprises the following steps that: a platform maintenance management module carries out management and maintenance of a platform system, including the management of platform user accounts, the management of authority and modules, and the recording of a platform operation error log; the construction of a target building is carried out according to a construction drawing of building construction, and in the construction process, building data of a constructed part are collected on a building construction site; and a building construction drawing is constructed, and a vertical center shaft is erected for the target building according to the constructed construction drawing. According to the method, a BIM model lightweight display method is explored by forming a BIM-based whole-process historic building protection standard and method, construction and monitoring management of historic building engineering projects are realized, the method is different from a current mainstream C / S architecture, a complex historic building engineering BIM platform based on a B / S architecture is established, real-time data monitoring of historic buildings is realized, and powerful technical guarantee is provided for smooth completion of historic building engineering.

The invention provides a construction method of a double-side wall guide pit composite stepped large-section tunnel excavation support, which comprises the following steps: when a guide pit is excavated, the cross section of the guide pit is partially overlapped with the tunnel section along the longitudinal direction of the tunnel, a side wall is arranged in the guide pit, and the side wall is attached to the outer contour of the tunnel section; before the tunnel main hole is excavated, the tunnel slag back pressure backfill is carried out the guide pit and the tunnel core part, and the corresponding guide pit support structure is removed synchronously according to the excavation progress of the main hole during the excavation process of the main hole. The construction method has the advantages that the lateral deformation and bottom bulge deformation of the tunnel are prevented, the lining quality at the later stage of the tunnel is ensured, and the safety risk in large span and large section tunnel construction can be effectively controlled.

The invention discloses an annular embedded arrangement foundation used for shallow cover layers or bare rock areas in water. The annular embedded arrangement foundation comprises base grooves located in water bottom base rock, prefabricated open caissons and rock-socketed concrete. The bottom ends of the prefabricated open caissons are located in the base grooves. The space between the prefabricated open caissons and the base grooves is filled with the rock-socketed concrete. The base grooves are annular grooves vertically extending downwards. The shape formed after each annular groove is cut along the horizontal cross section is matched with the shape formed after each prefabricated open caisson is cut along the horizontal cross section. The annular embedded arrangement foundation is simple in structure and convenient to operate and use, advantages and disadvantages of traditional foundations in water are sufficiently taken into consideration in the annular embedded arrangement foundation, and by means of the technical measures of forming the annular grooves in the water bottom base rock, adopting the prefabricated double-wall steel open caissons and conducting post-pouring on the rock-socketed concrete, a series of problems faced by application of large-diameter deep hole drilling cluster pile foundations and open caisson foundations in the shallow cover layers and the bare rock areas are solved.