4701results about "Artificial islands" patented technology

The invention provides a box culvert jacking attitude intelligent control method and system based on digital twinning, and relates to the technical field of attitude control. Structural parameters of a box culvert entity, parameters of a construction environment, and elevation change data and axis offset data in a jacking process are obtained, and the two kinds of data are integrated to obtain a box culvert jacking attitude intelligent control system; generating a box culvert jacking attitude data frame sequence; according to box culvert entity reference information in the model and the updated box culvert real-time state information, combining the box culvert jacking attitude data frame sequence to determine box culvert actual attitude parameters, comparing the box culvert actual attitude parameters with box culvert design attitude parameters, determining attitude deviation types and attitude deviation values corresponding to the box culvert axis direction and the box culvert height direction respectively, and calculating the box culvert jacking attitude data frame sequence according to the attitude deviation types and the attitude deviation values. According to the method, the attitude adjustment control instruction is generated according to the attitude of the box culvert, so that the equipment drives the jack to adjust the jacking attitude of the box culvert according to the instruction, dynamic synchronization and accurate mapping of the structural state in the jacking process of the box culvert are realized, and the real-time performance, the accuracy and the control robustness of attitude adjustment are improved.

The application discloses an underwater data center, which comprises a pressure cabin, an outer frame, a lifting structure, a pipeline structure, a server cabinet inside the pressure shell, an inspection lifting structure, a fixing and moving mechanism, and an internal state monitoring system; the pressure cabin is a closed structure formed by the pressure shell, and at least one pressure cabin entrance structure is arranged on the surface of the pressure cabin; the lifting structure comprises a hydraulic jacking oil cylinder and a lifting guide column; the server cabinet is arranged in an array in the pressure shell, and is fixed and moved by the fixing and moving mechanism at the upper end and the lower end for control. The application can realize efficient water-out and water-in actions by using the lifting mechanism; the application is suitable for high-stable underwater cooling of a large-volume high-density data center system; the pressure cabin entrance is provided, so that the inspection personnel can enter the pressure cabin for inspection without water-out, and the working efficiency and use efficiency are high; and the state monitoring system ensures high safety of the internal environment and timeliness of risk discovery.

The invention discloses a tailing pond underground anti-seepage wall grooving and quincunx curtain grouting synergistic process, and relates to the technical field of grouting collaboration.The tailing pond underground anti-seepage wall grooving and quincunx curtain grouting synergistic process comprises the following steps that S1, anti-seepage wall bodies are constructed in a foundation of a to-be-treated area, the anti-seepage wall bodies are continuously arranged along the treatment axis, a wall body groove section is formed through the underground grooving technology, and the wall body groove section is formed; s2, curtain grouting treatment is synchronously or firstly carried out on the lower area or the upstream side of the anti-seepage wall body, a multi-row sequential hole arrangement mode is adopted for curtain grouting, grouting holes are arranged in a staggered or quincuncial mode, a continuous curtain anti-seepage layer is formed, and the anti-seepage wall body is formed; and S3, the anti-seepage wall and the curtain grouting bodies are provided with lap joint areas in the vertical direction or the horizontal direction, and a wall-curtain integrated anti-seepage structure is formed. The plastic concrete anti-seepage wall is constructed in the foundation, the multiple rows of quincunx curtain grouting bodies are arranged in the foundation, and the lap joint structures are arranged between the plastic concrete anti-seepage wall and the multiple rows of quincunx curtain grouting bodies; unification of structural stability and anti-seepage continuity of the underground anti-seepage system is achieved.

The invention discloses a system and a method for automatically measuring pipe network parameters based on three-dimensional scanning of a wellhead of an inspection well, and belongs to the technical field of municipal engineering measurement. The system comprises a wellhead fixing assembly, a three-dimensional laser scanning assembly, a posture sensing assembly, a distance measuring assembly, a coordinate input assembly, a control processing assembly and a telescopic rod assembly. According to the method, through system deployment leveling, coordinate reference establishment, working condition judgment, point cloud acquisition, data processing and result output, automatic measurement of inspection well depth, pipe network pipe diameter, pipeline trend and pipe orifice center coordinates is realized. The system is fixed at a wellhead, does not need to descend, and adapts to scenes such as shallow wells / deep wells and good / weak signal areas; based on a high-density point cloud and an automatic algorithm, the measurement precision is high, the efficiency is improved, and output data can be directly used for pipe network modeling. The method solves the problems of low efficiency, strong manual dependence and poor safety of traditional measurement, and is suitable for parameter measurement of various inspection wells and pipe networks.

The invention discloses an irrigation channel maintenance cofferdam system and a maintenance method, the system comprises a vehicle body with an arm, a rotating device, a cofferdam device and a sealing structure, a cantilever is hinged to the tail end of a working arm of the vehicle body with the arm, the rotating device is mounted at the lower end of the cantilever, and the cofferdam device is mounted at the lower end of the rotating device; the cofferdam device comprises a first baffle and second baffles, the two second baffles are installed at the left end and the right end of the first baffle correspondingly, an included angle is formed between each second baffle and the first baffle, and sealing structures are installed on the lower sides of the first baffle and the second baffles and the sides, away from the first baffle, of the second baffles correspondingly. A connecting base is installed on the upper side of the first baffle and connected with the rotating device. When the cofferdam device is installed, the cofferdam device is fixed through the working arm of the truck body with the arm, and the cofferdam device is more convenient to install.

The invention belongs to the field of underground traffic engineering, and relates to a construction method and structure for constructing a transfer node through an underground excavation underneath pass operation station. The newly-built station and the existing operation station are in T-shaped node transfer, when the existing operation station is constructed in the early stage, transfer nodes are implemented in different periods, and a plurality of supporting piles and supporting beams are reserved below a bottom plate in the range of the transfer nodes, so that the safety of the existing operation station is protected when the transfer nodes are subjected to underground excavation construction in the later stage. When a newly-built station adjoins an operation station, open excavation and sequential construction are carried out to complete a main body structure, fender posts within the height range of the operation station are broken, new and old structures are connected, fender posts within the negative three-layer range of a transfer node are broken, and underground excavation construction is carried out in a joint control mode of excavation face zoning and longitudinal step-by-step excavation to penetrate through the existing operation station. And the reserved pile foundation is broken according to needs, stable stress conversion is achieved, and the safety of an operation station above is ensured. According to the method, the construction risk can be effectively controlled, the safety of underground excavation and underneath crossing of the existing operation station is achieved, then the transfer function is achieved, and good economic benefits are obtained.

The invention discloses a soft soil foundation embankment heightening and widening structure and a construction method, and belongs to the field of water conservancy projects. In order to solve the problems of uneven settlement, landslide instability and overlarge occupied area easily occurring when the soft soil foundation embankment is heightened and widened, the structure comprises precast concrete piles (top beams and ripraps are arranged on the tops of the piles) densely arranged at the slope toe outside the embankment, an inner side cantilever retaining wall (with drainage holes and a gravel inverted filter), geogrids laid in backfill soil in a layered mode, and CFG piles arranged on the lower portion in a plum blossom shape. The guardrail base and the flower bed are integrally poured with the retaining wall. The construction method comprises the steps of slide-resistant pile construction, earthwork excavation, CFG pile construction, retaining wall pouring, embankment body backfilling and embankment top road construction. Bidirectional control over settlement and horizontal displacement is achieved through cooperation of multiple structures, variable-stiffness leveling can be achieved by adjusting parameters of the CFG piles, and the variable-stiffness leveling structure has the advantages of skid resistance, stability, landscape optimization and land occupation saving and is suitable for soft soil foundation embankment upgrading and reinforcing projects.

The invention discloses an underground comprehensive pipe gallery for sponge city rainwater regulation and storage, and belongs to the technical field of comprehensive pipe galleries, the underground comprehensive pipe gallery comprises a regulation and storage pipe gallery box culvert and a water storage pipe gallery box culvert, the regulation and storage pipe gallery box culvert and the water storage pipe gallery box culvert each comprise an upper functional area and a lower treatment area, and each lower treatment area comprises a water inlet area, a settling area and a water outlet area which are sequentially arranged; a water inlet area of the water regulation and storage treatment area is communicated with the water inlet channel, a water storage pump is arranged in a water outlet area of the water regulation and storage treatment area and connected with a water storage capsule in the water storage pipe gallery box culvert through a pipeline, and a calling pump is arranged in the water storage capsule and connected with the water outlet channel of the water regulation and storage pipe gallery box culvert through a pipeline. According to the underground comprehensive pipe rack for rainwater regulation and storage of the sponge city, rainwater is stored after being subjected to precipitation treatment, the water storage capsules are adopted for water storage, the water storage capsules are arranged in the second water supply culvert, the occupied area is small, and the water storage capacity is improved.

Systems and methods are provided for assembling and installing multiple wind turbines from a single vessel. In general, different embodiments use wind turbine components on the vessel including blades, a nacelle assembly with a rotating hub, and a tower. A Turbine Installation Gantry System (TIGS) embodiment uses a gantry system with a truss substructure and at least one bridge crane on an elevated vessel for assembling the wind turbine blades on the vessel to a nacelle hub supported on the seabed. A Skidding Turbine Installation Crane (STIC) embodiment has a rotatable crane mounted on a skidding pedestal or cantilever structure, providing full access to the vessel deck and blades, and for bringing the assembled nacelle assembly outboard to assemble each blade. A Turbine Assembly Positioning System (TAPS) embodiment includes both a handling system and a crane mounted on a skidding cantilever structure for securing the blades to the assembled tower section and nacelle hub that are cantilevered outboard of the vessel by the handling system. The combination embodiment uses selected components and systems from the TIGS, STIC and TAPS embodiments to provide component and system redundancy and concurrent operation.

The invention discloses a prefabricated welded water-stop steel plate column stirrup column penetrating structure, tool and construction method, and the construction method comprises the following operation steps: step 1, taking a section of water-stop belt steel plate as a column inner plate water-stop belt, and preparing a prefabricated welded water-stop steel plate column stirrup column penetrating tool, the prefabricated welded water stop steel plate column stirrup column penetrating tool comprises a fixing tool and a clamping tool, and a column inner plate water stop belt is fixed to the fixing tool; the invention relates to the technical field of water stop steel plate column penetrating construction, and has the beneficial effects that a column inner plate water stop belt and a multi-bend column stirrup are pre-welded and spliced in a factory through the prefabricated welding water stop steel plate column stirrup column penetrating tool to form a prefabricated assembly; during construction, only the prefabricated assembly needs to be directly sleeved with the longitudinal rib and bound, operation is easy, the construction efficiency is improved, the construction period is shortened, a large amount of welding work does not need to be conducted on a building site, and the safety coefficient is increased.

The invention discloses a combined type seafloor data center breakwater system which comprises a honeycomb protection layer, an energy dissipation middle cavity layer, a supporting wall layer and a flow guide adjusting mechanism, and the honeycomb protection layer, the energy dissipation middle cavity layer, the supporting wall layer and the combined type seafloor data center are sequentially arranged in the water flow and wave direction. The flow guide adjusting mechanism is installed on the supporting wall layer, the honeycomb protection layer and the energy dissipation middle cavity layer, the supporting wall layer and the honeycomb protection layer communicate with each other, the flow guide adjusting mechanism is used for adjusting the overflowing area of water flow flowing to the combined type seabed data center, and therefore the flow speed of the water flow is adjusted, and the honeycomb protection layer and the energy dissipation middle cavity layer are used for weakening vibration energy in waves. And the flow velocity influence of water flow is reduced. Wave dissipation and heat dissipation of the combined type seabed data center are well achieved, and the wave dissipation efficiency can be adjusted according to the sea condition.

The utility model discloses a circular working well main body structure which comprises a cylindrical hollow side wall, a top plate located at the top is arranged at the upper end of the side wall, a bottom plate located at the bottom is arranged at the lower end of the side wall, #-shaped crossed internal partition walls are arranged in the internal space of the side wall, and the internal partition walls divide the internal space. And four shield launching and receiving holes are reserved in the lining wall on the inner side of the side wall. According to the utility model, the inverted circular lining wall and the enclosure structure form a superposed side wall, the support rigidity of an internal #-shaped crossed longitudinal and transverse beam (wall) system is large, and structural members are permanently and temporarily combined, so that the stability of the multi-hole structure of the ultra-deep circular working well is enhanced, and the formation deformation is effectively controlled. The longitudinal and transverse beam (wall) system is reasonable in space layout, plate span is reduced, a self-balancing space stress system is formed, the thickness of the top plate and the thickness of the bottom plate are small under the condition of large burial depth, the plate face is flat, arching is not needed, construction is convenient, and space utilization is reasonable.

The invention relates to a self-repairing flow state solidified soil reinforced retaining wall for slope toe reinforcement and a construction method, and the retaining wall comprises a wall body which is formed by self-repairing flow state solidified soil in a cast-in-place mode and is provided with extension sections on the two sides, and drainage holes are formed in the extension sections; the foundation is arranged on the foundation and used for supporting the wall body; the reinforcement system is composed of multiple layers of geogrids and embedded in the wall body in a layered mode, one end of each layer of geogrid is anchored in the wall body, and the other end of each layer of geogrid extends backwards and is anchored in the backfill area; when the retaining wall has micro-cracks due to uneven settlement of a soft foundation, the high-alkali environment at the cracks can immediately trigger the alkali-sensitive self-repairing microcapsules to be broken, the released repairing material can generate gel in situ to seal the cracks, the mechanism converts traditional passive damage into active repairing, crack development is effectively restrained, an erosion channel is blocked, and the service life of the retaining wall is prolonged. Therefore, the long-term durability of the retaining wall is obviously improved.

An installation includes: a plurality of pilings securable to a bed under a surface of a body of water; a base structure disposed atop the plurality of pilings; and a module disposable on the base structure, wherein the module is positioned and securable on the base structure after being floated on the surface of the body of water over the base structure.

The invention discloses an adjustable assembly type back rib steel-wood combined formwork with reinforcing ribs and a construction method of the adjustable assembly type back rib steel-wood combined formwork. The formwork comprises a formwork body, a steel back rib unit and an intelligent control module. The steel back rib unit is formed by longitudinally splicing section steel with standard length, and an electromagnetic coil and a mechanical lock catch mechanism are integrated in an inner cavity of the steel back rib unit. The intelligent control module presets various construction control modes, senses concrete side pressure in real time through a pressure sensor, and automatically controls cooperative work of electromagnetic force and a mechanical lock catch mechanism. During construction, different sizes are adapted through modular assembly, electromagnetic force is used for assisting in positioning and preliminary fixing, and then mechanical locking is conducted; in the pouring stage, electromagnetic force and mechanical locking force bear pressure together, electromagnetism is automatically cut off in the solidification stage to save energy, and reverse pulse current is applied in the demolding stage to reduce demolding resistance. The light-weight, adjustable, intelligent and efficient lossless demolding of the formwork is achieved, and the construction efficiency, the forming quality and the safety are remarkably improved.

The invention relates to the technical field of steel platform assembly, in particular to an offshore photovoltaic steel platform land assembly jig frame and a construction method, and the construction method comprises the following steps: installing a first track and a first assembly jig frame in a first construction area; the primary trusses, the secondary trusses and the connecting rods are assembled by means of the first assembly jig frame to form a photovoltaic steel platform main body; a second track connected with the first track is installed in a second construction area, and the assembled photovoltaic steel platform body slides to the second construction area through the first track and the second track; mounting a second assembly jig frame in a second construction area to support the photovoltaic steel platform main body; and an overhanging truss is installed on the outer side of the photovoltaic steel platform body, and therefore assembly of the photovoltaic steel platform is completed. The jig frame is used for supporting the photovoltaic steel platform to complete assembly, the first rail and the second rail are used for facilitating movement of the steel platform body, then assembly of the steel platform is completed through different types of jig frames, and the assembly efficiency is high.

The invention discloses a temporary structure suitable for an assembly type station ending end, which comprises a temporary support structure arranged in a shape like a Chinese character'tian ', the temporary support structure is divided into a foundation support frame provided with an outer ring and a cross-shaped inner support frame body arranged between the foundation support frames, and the temporary structure further comprises an underpinning system arranged in the temporary support structure; through the construction method and structure of firstly building temporary steel beam columns and firstly supporting and then underpinning, the assembly starting point and end point positions of the full-prefabricated rectangular flat-top assembly type station are suitable for the working condition, the method can solve the problem of space and time conflict between the assembly trolley and the temporary steel stand columns, it is ensured that the assembly trolley is normally put into use, and the construction efficiency is improved. Meanwhile, the mounting and dismounting workload of the temporary section steel beam column is reduced, the construction efficiency is improved on the premise of ensuring the splicing quality, the high-place operation risk is reduced, meanwhile, normal construction of a post-pouring beam column system can be ensured, and the mounting and dismounting amount of large section steel components is reduced.

The invention provides an anti-seepage structure, a pumped storage power station anti-seepage bottom plate and a construction method, and relates to the technical field of anti-seepage engineering.The structure comprises a joint core bottom plate, an auxiliary bottom plate and a connecting piece, and the periphery of the bottom of the joint core bottom plate extends in the horizontal direction to form protrusions; concave parts matched with the protrusions are arranged on the periphery of the bottom of the auxiliary bottom plate, the joint core bottom plate and the auxiliary bottom plate are connected through connecting pieces, and the protrusions are arranged in the concave parts. The construction efficiency can be effectively improved.

The utility model discloses an anchor rod protection and retaining wall combined mountain structure in the field of civil engineering, which comprises a retaining wall, the front side of the retaining wall is fixedly connected with a fixing plate through threads, the front side of the fixing plate is fixedly connected with a shell, and an adjusting mechanism is arranged in the shell; an anchor rod is connected to the interior of the shell through the adjusting mechanism, the anchor rod penetrates through the rear side of the retaining wall, an anti-retreating mechanism is arranged at the rear end of the anchor rod, the anchor rod protects a mountain structure combined with the retaining wall, by means of the arrangement of the fixing plate, the shell and the adjusting mechanism, a rotating disc is rotated, a threaded rod is driven to rotate, a sliding block is made to move, and therefore the retaining wall is protected; the first connecting rod is driven to deflect, so that the rotating plate deflects, the angle of the rotating plate is changed, matching with the inclination angle of the anchoring rod is facilitated, the base plate is attached to the rotating plate, the anchoring rod is prevented from loosening, the anchoring rod is stably installed, and the anchoring stability of the retaining wall is improved.

The invention relates to the field of road repair, in particular to a hydraulic forcible entry device and a using method. According to the hydraulic forcible entry device, when the inspection well cover needs to be forcible entry, well cover cutting equipment and milling equipment are used for cutting and milling the periphery of the inspection well cover, so that only the bottom of the inspection well cover is connected with a shaft through a well ring; the whole hydraulic forcible entry device is lowered till the drill rod reaches the connecting face of the well ring and the shaft, and the oil cylinder keeps retracting in the lowering process; the oil cylinder extends out, the guide rod is driven to slide along the guide sleeve so as to drive the drill rod to extend outwards through the connecting rod, and an impact head slope at the outer end of the drill rod lifts the walling crib upwards so that the walling crib can be separated from the shaft; after separation, the inspection well cover and the well ring can be lifted away from the whole hydraulic forcible entry device. According to the hydraulic forcible entry device, manual forcible entry work after operation of a cutting machine is omitted, the labor intensity is reduced, the labor amount is reduced, the operation efficiency is improved, and the number of constructors needed for forcible entry is reduced.

The invention relates to a debris flow gully slope protection structure, and relates to the technical field of water conservancy projects. Multi-stage counter-slope terraces are arranged on the slope surface of the debris flow gully slope from the bottom end to the top end, each terrace structure comprises a terrace surface, ridges and a terrace ditch which are arranged upwards at intervals along a contour line, each layer of counter-slope terrace is separated by using a mortar rubble retaining wall as the ridge, the terrace surface is covered with soil by using a slope native soil layer, and the terrace ditch is connected with the ridge of the next stage of terrace by adopting a mortar rubble material. The field surface has a reverse slope inclination angle of 5-10 degrees, and crops can be planted on the field surface. The field ditches are communicated with main drainage ditches on the two sides of the terrace along the contour line downwards, and metal gates are arranged at the joints to control water flow, are closed when water storage is needed and are opened when water drainage is needed. The structure can effectively reduce the material, construction and maintenance cost, has high debris flow resistance, can stabilize the debris flow channel slope, reduces the water and soil loss of the slope, plays a role in terrace water storage and drainage, and further protects and promotes the growth of crops.

The invention discloses a mobile platform for DCM construction of a deep soft foundation in a swell sea area. The mobile platform comprises a suction bucket foundation, a track beam, a sliding system and a bearing platform. The suction bucket foundation is positioned below the track beam; the bearing platform is slidably arranged on the track beam through the sliding system, the suction bucket foundation comprises a suction bucket, a pumping and filling device and a buoyancy pile, the suction bucket is of a bucket-shaped structure with a closed upper end and an open lower end, one end of the buoyancy pile is fixedly connected with the suction bucket, and the other end of the buoyancy pile is used for supporting the track beam; water is pumped out of the suction bucket through the pumping and filling device, sinking and penetrating of the suction bucket foundation are achieved, air is inflated into the suction bucket through the pumping and filling device, floating of the suction bucket foundation is achieved, the suction bucket foundation is adopted, the platform foundation is suitable for deep and thick soft soil areas, rapid installation and pulling-out of the platform foundation can be achieved, recycling is achieved, and the material consumption is reduced. The influence of medium and long period surges on DCM equipment construction can be effectively reduced, the operation window is greatly improved, and the construction efficiency is effectively improved.

A waterproof structure for a panel joint of an underground diaphragm wall includes a first waterstop and a first cover plate. The panel joint is provided with a wall connection plate. The underground diaphragm wall has an excavation surface. In a direction perpendicular to the excavation surface, the wall connection plate is arranged below the excavation surface of the underground diaphragm wall. A first accommodating groove is defined between the wall connection plate and the panel joint and adjacent to the excavation surface. The first waterstop is arranged in the first accommodating groove, and both wings of the first waterstop are respectively and adhesively bonded to the two sides of the panel joint. The first cover plate corresponds to the first accommodating groove and is arranged at the excavation surface. The first cover plate is detachably connected to the underground diaphragm wall.

The application relates to the field of building construction, in particular to a multi-directional adjusting device for positioning a steel structure, which comprises an adjustable outer frame arranged between an upper steel structure column and a lower steel structure column and used for determining the position of a middle steel structure column, the middle steel structure column being capable of being embedded into the adjustable outer frame, the adjustable outer frame comprising a plurality of fixedly connected mounting rods, every two of the mounting rods being divided into a group, the mounting rods in the same group being arranged on the same straight line; a telescopic screw rod installed between the mounting rods in the same group and used for adjusting the distance between the mounting rods in the same group; and a jacking screw rod installed on two groups of the mounting rods arranged in parallel, the jacking screw rod being perpendicular to the mounting rods. The application can reduce the manpower required for installing the steel structure column.

The invention discloses a municipal road inspection well anti-sedimentation structure and a construction method, and relates to the field of inspection well anti-sedimentation structures. The anti-sedimentation structure of the municipal road inspection well comprises a precast concrete shaft, the reinforcing steel bar reinforcing frame comprises a plurality of annular reinforcing steel bar sets which are arranged in the height direction of the prefabricated concrete shaft in a sleeving mode at intervals, each annular reinforcing steel bar set comprises at least one annular reinforcing steel bar, and the annular reinforcing steel bars are sequentially arranged in the circumferential direction of the prefabricated concrete shaft from inside to outside. And the number of the annular steel bars in each group is gradually reduced from bottom to top along the height direction of the precast concrete shaft. By arranging the frustum-shaped steel bar reinforcing frame which is integrally narrowed upwards, on one hand, the pressure around the well is diffused to peripheral concrete in a gradient mode, stress concentration is reduced, on the other hand, the bottom reinforcement density is increased, and the anti-floating stability is remarkably improved.

The utility model discloses a water stop structure suitable for an upper gate room of a high gate with a deep and thick covering layer in the technical field of engineering water stop, which comprises a plurality of gate plates, a structural seam is arranged between two adjacent gate plates, the structural seam is communicated with a water stop cavity, and a water stop device is filled in the water stop cavity. The water stop device comprises a first mortar layer, a flexible filler layer and a second mortar layer which are sequentially filled in the structural joint from top to bottom, a copper sheet water stop assembly and a water stop belt assembly are arranged on the flexible filler layer in a penetrating mode at intervals, the overall structure is large in flexibility effect, the function of adapting to large uneven deformation between adjacent gate sections can be achieved, damage is not prone to occurring, and the service life of the water stop device is prolonged. Therefore, safe operation of the water gate structure is guaranteed.

The utility model discloses a permanent and temporary combined assembly type underground structure plate wall connecting node which comprises an assembly type underground diaphragm wall, a full-length steel plate is installed on the side wall of the assembly type underground diaphragm wall, and a prefabricated structure plate is hoisted on the full-length steel plate. The gap between the prefabricated structural slab and the fabricated underground diaphragm wall is filled with ultra-high-performance concrete, and a steel bar structure is arranged in the ultra-high-performance concrete. According to the utility model, the rigid connection between the two prefabricated parts is realized, the integrity of the structure is improved, and the safety and durability of the underground structure are fully ensured; an underground diaphragm wall which is usually used as a temporary structure is changed into a permanent structure, so that the construction period is shortened, and the investment is saved; the ultra-high performance concrete poured in the joint can greatly shorten the anchoring length of the steel bars, enlarge the arrangement distance of the steel bars, obviously reduce the using amount of the steel bars on site and the binding workload, is convenient to install and simple in process, obviously improves the construction efficiency, and has high popularization and application value.

The invention discloses a rapid dismounting and replacing method for a drainage well lid, and the method comprises the steps: S1, scanning a damaged well lid and a surrounding road surface region, and obtaining the point cloud data of the well lid and the point cloud data of the surrounding road surface; s2, generating a cutting path based on the manhole cover state information and the surrounding road surface state information; s3, according to the cutting path, meshing between the well lid and the surrounding road surface is relieved, and the damaged well lid and the damaged old well base are dismantled; s4, the bottom of a well mouth foundation bed is cleaned, a new well seat is placed on the treated foundation bed, and a new well lid is installed; and S5, backfilling the excavated area, performing joint treatment on the joint of the backfilled area and the original road surface, and leveling the surface of the backfilled area. The construction period can be obviously shortened, the labor intensity is reduced, the influence of construction on traffic and environment is reduced, the installation quality is improved, and the service life is prolonged.

The utility model discloses a prefabricated diaphragm wall type assembled subway entrance and exit structure which comprises side wall structures, a prefabricated top plate and a prefabricated bottom plate are arranged between the side wall structures of the entrance and exit, the prefabricated top plate and the prefabricated bottom plate are both connected with the side wall structures through ultrahigh concrete, and the side wall structures are formed by integrating an enclosure structure and a main body structure. The side wall structure comprises prefabricated underground diaphragm walls, and underground diaphragm wall inter-amplitude connecting assemblies are arranged between the adjacent prefabricated underground diaphragm walls. The foundation pit support structure, the waterproof curtain and the side wall of the main body structure are integrated, so that working hours and manufacturing cost are saved. According to the utility model, the connection scheme of the waterstop strip bags, the C / T inter-width connectors and the UHPC concrete wet joints is adopted between the prefabricated underground diaphragm walls, so that the waterproof and guiding effects are achieved. According to the utility model, the longitudinal tensioning connection scheme of the inter-width concave-convex tenons, the elastic sealing gaskets and the prestressed steel bars is adopted between the prefabricated plate widths, so that not only can shearing force be effectively transmitted, but also a water stopping effect can be achieved.