1215 results about "Culvert" patented technology

The invention discloses a health assessment method for a long-distance underground culvert structure, and the method comprises the steps: carrying out the fusion processing based on acoustic and optical detection data, so as to recognize a structure defect; based on underwater rebound and coring test data, carrying out underwater-dry conversion and correction on a strength value, and determining corrected structural strength and material degradation parameters; in combination with defect, degradation and historical monitoring data, carrying out structure evolution modeling and mutation risk identification to obtain evolution characteristics and mutation risks of the structure; and integrating the corrected structural strength, evolution characteristics and abrupt change risks, performing full-field state assessment, and generating a structural health assessment and risk early warning result. According to the method, accurate, dynamic and full-field evaluation of the health state of the culvert can be realized, and the reliability and early warning capability of an evaluation result are improved.

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 invention provides an assembly type bridge and culvert node mechanical property analysis method and system based on a neural network, and relates to the technical field of data processing, and the method comprises the steps: obtaining real-time monitoring data of an assembly type bridge and culvert node, the real-time monitoring data comprising strain data, vibration data and load data; performing feature extraction and optimization on the real-time monitoring data of the fabricated bridge and culvert nodes to obtain a nonlinear feature set; performing mechanical property evaluation on the nonlinear feature set to obtain a real-time mechanical property evaluation result; performing model construction and optimization based on the real-time mechanical property evaluation result and preset historical monitoring data to obtain an optimized mechanical property change trend prediction model; and sending the real-time monitoring data to the optimized mechanical property change trend prediction model for prediction to obtain the mechanical property of the fabricated bridge and culvert node in a preset time period. The precision, timeliness and reliability of mechanical property monitoring of the fabricated bridge and culvert joint are improved.

The invention provides a drainage arch culvert structure, and belongs to the technical field of building construction. The arch ring is located above the foundation and serves as a drainage channel of the arch culvert body; the platform body is arranged on the foundation, clings to the side walls on the two sides of the arch ring and serves as a lateral protection structure; and the protection arch is arranged at the top of the platform body, covers the arch ring side arch and serves as a side arch protection structure. The drainage arch culvert structure composed of the foundation, the arch ring, the platform body and the protective arch is arranged at the bottom of the slag yard, a traditional scheme that a drainage blind ditch is arranged at the bottom of the slag yard can be replaced, the overflow area is larger than that of the drainage blind ditch, the drainage capacity is higher than that of the drainage blind ditch, slag materials can be prevented from invading the structural limit of the drainage blind ditch in the filling process, and a drainage channel cannot be blocked; the drainage effect cannot be influenced.

The invention discloses a road culvert inner wall damage image detection and traffic capacity evaluation method and system, and relates to the technical field of road engineering detection and computer vision, and the method comprises the steps: collecting multi-source data through an annular camera, a laser section scanner and a mileage encoder carried by a detection robot, and carrying out the panoramic expansion and time-space registration; using a multi-scale attention panoramic segmentation network to identify damages such as lining cracks, joint slab staggering, damage and chipping, steel bar exposure and water leakage; calculating the clearance size and the deposition thickness of the culvert by adopting an ellipse fitting method; according to the method, the culvert detection speed reaches 50 m / h, and the damage detection accuracy reaches 89% or above.

The invention discloses an airport area underground water and surface water system coupling seepage regulation and control method and system, and the method comprises the steps: employing a multi-source data fusion investigation mode to find out regional stratum and structure characteristics, and determining an underground water occurrence migration rule and a surface water and underground water supplement and drainage relation; constructing a coupling seepage model of the underground water and the surface water system under the current condition by applying a numerical simulation method, and defining a dynamic association mechanism of the underground water and the surface water system in time and space; based on a simulation result, determining a transformation scheme that a main stream adopts a double-hole box culvert and a branch stream adopts a single-hole box culvert, and arranging an electric gate at the box culvert; arranging monitoring points of groundwater level, pore water pressure and surface water system flow in combination with field spring water and well distribution, and constructing a cooperative monitoring network; the coupling seepage law of underground water and surface water systems is analyzed based on monitoring data, and the opening degree of a box culvert electric gate is dynamically adjusted to control rising of the underground water level in the flood period. The stability of a water system in an airport area is ensured.

The invention discloses a construction technology for a prefabricated drainage box culvert steel formwork, and is suitable for the technical field of box culvert formwork construction. The drainage box culvert steel formwork system comprises the construction steps of construction preparation, installation of a pedestal and an inner formwork support, installation of a box culvert foundation, installation of an inner formwork assembly, installation of a formwork assembly, one-time pouring forming, formwork removal after pouring and transferring. The construction site regionalization layout is adopted, a box culvert steel bar binding area and a formwork installation transverse moving area with an adjustable inner formwork support are arranged, the circulating operation of formwork erecting, pouring, demolding and transferring is achieved through a main beam suspension type inner formwork assembly, and a hydraulic formwork collecting device is innovatively adopted for driving a symmetrical hinged type inner formwork system; and in combination with the symmetry and multi-point uniform stress characteristics of a plurality of auxiliary supporting devices, the bending deformation of the inner template is effectively controlled through sequential control of a layered equal-height high-speed pouring process with preferential base angles.

The invention discloses a tunnel, bridge and culvert water level detection and alarm system and method based on deep learning, and the method comprises the following steps: S1, collecting an image and a capacitance water level signal at the lowest point of a tunnel or an easy water accumulation region, and generating standardized multi-source data; s2, inputting the image into a SegmentAnything model, extracting a water body mask, and calculating an image water level value in combination with scale mapping; s3, carrying out confidence weighted fusion on the image water level and the capacitance signal to obtain a fused water level value; s4, constructing a fused water level time sequence, constructing an SCI Net model, and outputting a predicted water level sequence; s5, generating an alarm label according to the fused water level and the prediction result; s6, LED display and acousto-optic response are controlled according to the alarm label, and an early warning prompt is started when a serious alarm is given; s7, capturing an image in an early warning or serious alarm state, and generating an alarm data packet; and S8, uploading to an urban water level monitoring platform through the Internet of Things module. According to the invention, intelligent identification and remote early warning of the ponding state of the tunnel bridge and culvert are realized.

The invention relates to the technical field of tunnel engineering disease treatment, in particular to a construction method of a drainage system for karst tunnel inverted arch upheaval disease treatment, which comprises the following construction steps: S1, arranging settlement monitoring points in a disease section tunnel, and arranging a reinforcing structure in a lining arch foot area; and S2, the existing disease inverted arch is broken and removed section by section according to the preset length, and temporary supporting is carried out in time. And S3, an overhaul window is dug in the lining through a water mill drill, and a supporting structure is synchronously installed. And S4, a foundation trench is excavated in the bottom of the inverted arch, a concrete strip-shaped foundation is poured to serve as a foundation of the steel corrugated pipe arch culvert, the steel corrugated pipe arch culvert is installed, the axis of the steel corrugated pipe arch culvert is consistent with the karst cave water flow direction, and the steel corrugated pipe arch culvert is in sealed butt joint with the confluence overhaul groove. And S5, a drainage pipe is pre-buried in the inverted arch reconstruction section, the confluence overhaul groove and the central drainage ditch are connected, and finally concrete is poured to seal the inverted arch structure. The method effectively solves the problem of upheaval of the inverted arch caused by water burst of the deeply-buried karst cave, reduces the damage of the lining structure, and improves the long-term stability of the tunnel.

The invention belongs to the technical field of highway bridge and culvert engineering, and discloses a multi-span hole assembly type cover plate small bridge and culvert structure construction method which is characterized in that side walls, middle walls and cover plates are transported to a construction site to be assembled after being prefabricated, so that site formwork erecting work is effectively reduced, the construction process is simplified, and the construction efficiency is improved; the connection strength and the structural stability are improved through a grouting method, and then the problem of insufficient grouting of a bedding method is further solved through a secondary grouting method; the pre-embedded steel bar groups of the adjacent cover plates are welded and connected, and by utilizing an equivalent load preloading pre-deformation method in advance, cast-in-place connection areas can bear more uniform stress distribution after being fixedly connected, the stress state in the service stage tends to be more balanced, the crack initiation risk is reduced, and the overall stability and durability of the structure are improved; rigid connection is formed between the adjacent cover plates and the middle wall, the risks of cover plate damage, slab staggering and reflection cracks caused by displacement or looseness of the abutted seam are reduced, and the structural safety and the service life of the bridge and culvert are guaranteed.

The invention relates to the technical field of pipeline robots, and discloses a probing robot for automatically recognizing defects of a drainage pipe culvert under the water operation condition. The movement mechanisms cling to the inner wall of the pipeline and are used for detecting the movement of the robot; the rotating mechanism is rotationally mounted on the peripheral side of the robot body; the pressure mechanisms are fixedly mounted on the outer wall of the rotating mechanism, attached to the inner wall of the pipeline and used for collecting pressure value related electric signals; the detection system is mounted in the robot body; the detection system comprises a signal processor module, a wireless transmission equipment module and an infrared camera module; the pressure mechanism, the rotating mechanism and the detection system are matched to realize accurate positioning of defect points on the inner wall of the pipeline. Through combination of mechanical contact type detection and kinematic model positioning, high-precision spatial positioning and identification of the inner wall of the pipeline are realized in a high-turbidity and full-pipe water-carrying environment, and data support is provided for subsequent pipeline maintenance and repair.

The invention belongs to the technical field of large deviation box culvert jacking construction under water-rich soft soil, and particularly relates to a water-rich soft soil roadbed underneath passing heavy haul railway special-shaped box culvert deviation rectifying device and a construction method. An underneath pass heavy haul railway box culvert jacking deviation rectifying device comprises an underneath pass special-shaped box culvert, a drilling fulcrum pile, a downlink rail and an uplink rail, the underneath pass special-shaped box culvert comprises a high box culvert and a low box culvert, lateral jacking mechanisms are arranged on the side faces of the high box culvert and the low box culvert respectively, and the outer sides of the lateral jacking mechanisms are connected with top plates; the bottom face of the high box culvert and the bottom face of the low box culvert are connected with a box culvert jacking base bottom plate, two side plate torsion mechanisms and a plurality of box culvert bottom plate jacking base mechanisms are arranged on the box culvert jacking base bottom plate, and bottom jacking mechanisms are arranged on the box culvert bottom plate jacking base mechanisms. The jacking mechanisms on the two sides and the bottom of the box culvert are utilized, the total station is combined, a control point transmission method is adopted, it is ensured that the box culvert is accurately in place according to the design axis, meanwhile, dynamic and accurate deviation correction is achieved, and the box culvert jacking construction efficiency is improved.

The invention discloses a construction method of a double-hole box culvert in underground engineering. The construction method aims at solving the problem that the construction quality and the construction efficiency of an underground double-hole box culvert constructed by a formwork trolley system cannot be guaranteed. The method comprises the steps that supporting frame bodies of two adjustable trolley formwork systems and formwork systems are erected on the top of a poured box culvert structure side by side, formwork closing construction is conducted according to the sequence that a top formwork assembly is firstly closed, then corner formwork panels are closed and finally side formwork assemblies are closed, and the side formwork assemblies on the two sides of a middle wall of the double-hole box culvert are reinforced through opposite-pull screws; middle wall concrete is poured to the bottom of the top plate, after the structural strength of the concrete meets the requirement, a plurality of transverse supports are erected on the two sides of the middle wall for reinforcement, the outer side wall and the top plate are poured with the concrete, and after the structural strength of the concrete meets the requirement, the control system controls the adjustable trolley formwork system to demold; and the formwork moving trolley is operated to the bottom of the supporting frame body and drives the adjustable trolley formwork system to walk to the next to-be-poured section of the box culvert structure to be poured, and self-balance of the formwork system is achieved.

The invention discloses a supporting and reinforcing device for a roadbed culvert and a using method of the supporting and reinforcing device, and relates to the technical field of roadbed culvert reinforcement. A mounting shell is fixedly connected to the upper side of the mounting frame, two supporting plates are fixedly connected to the positions, located on the two sides of the mounting shell, of the upper side of the mounting frame, supporting columns are rotationally matched with the two sides of the supporting plates, an arc-shaped top plate is fixedly connected to the ends, away from the mounting frame, of the supporting columns, and a driving mechanism is arranged in the mounting shell; a driving mechanism is arranged, a driving motor drives a reciprocating lead screw to rotate, a linkage connecting rod enables a supporting column and an arc-shaped top plate to accurately ascend and descend, different pressures are adapted in real time, loads are evenly dispersed, a bottom anti-skid plate and moving wheels are matched, the stability of the culvert is guaranteed, installation and debugging are convenient, and the reinforcement efficiency and adaptability of the culvert are improved in an all-around mode.

The utility model discloses an assembly type box culvert waterproof structure, and relates to the technical field of assembly type box culverts, the assembly type box culvert waterproof structure comprises two adjacent box culvert bodies, a sealing device is arranged between the two adjacent box culvert bodies, and a plurality of groups of connecting devices used for fixedly connecting the two box culvert bodies are arranged between the two adjacent box culvert bodies; the sealing device comprises a plurality of sealing rings and a plurality of annular grooves, wherein the sealing rings and the annular grooves are arranged on the opposite inner sides of every two adjacent box culvert bodies correspondingly. The multiple sealing rings are clamped to the multiple annular grooves in a one-to-one correspondence mode. The possibility of leakage of the fabricated box culvert can be reduced.

A culvert-clearing system is provided. The system includes a base plate with alignment features, a pivotable winch assembly, and a scraper mechanism designed for bidirectional movement through a culvert. The winch assembly may be hydraulically powered and optionally retrofitted to existing winches using a conversion kit that integrates a hydraulic motor with a drive shaft via an adapter plate and coupler. The hydraulic motor is operated via a control unit and pump system to ensure proper torque delivery. A scraper assembly with angled arms and teeth is connected to a winch cable routed through a pulley assembly anchored at the far end of the culvert, enabling effective debris dislodgment and transport toward an accessible opening.

The invention relates to a box culvert construction process, which relates to the field of expressway box culvert construction, and comprises the following steps: after construction of a bottom plate and part of side walls of a box culvert is completed, dividing the whole box culvert into four construction sections by adopting a skip pouring mode, namely a pouring completion maintenance area, a slip form construction area, a steel bar pre-binding area and a construction preparation area; a formwork supporting frame device is assembled; the formwork device is moved to a slip form construction area and positioned; pouring construction is conducted on the slip form construction area; after pouring of one box culvert bin section is completed and the formwork removing condition is met, the side formworks are removed, then the top formwork is removed, and a pouring completed curing area is formed; the formwork device is moved to a constructed reinforcing steel bar pre-binding area, and repeated pouring construction is carried out; and box culvert construction operation is completed. The device has the effects that the template is automatically adjusted, the frame body is convenient to move, and positioning is simple.

The water supply tank culvert online dredging device comprises a rack, a driving device and a dredging hopper, the driving device is installed on the rack, the rack is guided to move on a rail structure in a tank culvert in the length direction of the tank culvert through the driving device, the dredging hopper is installed on the lower side of the rack, and the driving device drives the dredging hopper to move in the length direction of the tank culvert. A partition plate is installed in the middle of the desilting hopper and divides the interior of the desilting hopper into an overflowing bin and a sludge bin, the overflowing bin penetrates front and back, and a collecting hopper is installed at the rear end of the sludge bin. In the using state, the collecting hopper is connected with a sludge suction device through a hose. The overflowing bin is used for overflowing and does not affect downstream water supply, the sludge bin is used for shoveling up sludge to enter the collecting head, and the sludge suction device provides negative pressure for the sludge bin through a hose, so that the sludge is sucked from the collecting head and then enters the sludge suction device to be collected without overflowing. According to the dredging device, dredging can be conducted under the working condition that water is not cut off, water turbidity can be reduced in the dredging process, and the production burden of a downstream water treatment plant is reduced.

The utility model discloses a down-the-hole type fish passing device which mainly comprises a fish passing channel and a water passing flow channel. Wherein the fish passing channel is a passing channel for fishes to pass through a dam and is provided with two working gates; flow control assemblies for controlling the flow rate and the flow speed of water flow in the fish passing channel are arranged in the water passing channel and are divided into two groups; and each group of flow control components are arranged at a working gate of the fish passing channel and are symmetrically arranged along the two sides of the fish passing channel. The fish passing channel is of a culvert type structure and is provided with an upstream inlet and outlet and a downstream inlet and outlet. The flow control assembly comprises an inlet flow channel, a flow valve and an outlet flow channel; a water inlet of the inlet flow channel is in butt joint with an upstream water passing hole of the service gate. A water outlet of the outlet flow channel is in butt joint with a downstream water passing hole of the service gate, and the inlet flow channel and the outlet flow channel are connected through a flow valve. The down-the-hole type fish passing device has the advantages that the down-the-hole type fish passing device has excellent hydraulic characteristics, and a good passing environment is uniformly provided for fishes; the method is suitable for buildings with high, medium and low water heads.

The invention discloses a rectangular box culvert tunneling soil bucket conversion device and a working method thereof.The rectangular box culvert tunneling soil bucket conversion device comprises a rail, an electric rail car is placed on the rail, a base is installed on the top of the rail, two pairs of first oil cylinders and a pair of second oil cylinders are installed on the base, and the top ends of output shafts of the first oil cylinders are fixedly connected with soil bucket brackets; the top end of an output shaft of the second oil cylinder is provided with a pin shaft and provided with a mast frame through the pin shaft, the two sides of the top end of the mast frame are provided with a plurality of upper fixed pulleys, the base is provided with a plurality of lower fixed pulleys, and steel wire ropes are tied to the lower fixed pulleys and wound around the upper fixed pulleys. A second soil bucket is tied to the tail end of the steel wire rope, a third oil cylinder is installed on the base, and one side of the mast frame is installed at the tail end of an output shaft of the third oil cylinder. Compared with a traditional soil bucket conversion mode, the automation degree is high, manual whole-process operation is not needed, more time and labor are saved, and continuous conversion of the soil buckets can be achieved.

The present invention discloses an anti-siltation and anti-impact water-dividing structure for the intersection of a karst tunnel and an underground river. The structure utilizes an upstream water-dividing weir, a downstream force-dissipating weir, a porous box culvert-type V-shaped inverted siphon water pipe and an open overflow channel, so that the karst tunnel structure divides the underground river intersecting therewith into upper and lower water-passing sections; the lower water-passing section is a porous box culvert-type V-shaped inverted siphon water pipe, and the upper water-passing section is an open overflow channel. The water-dividing structure of the present invention diverts the underground river through the karst tunnel according to the dry season and the flood season. The buried depth of the V-shaped inverted siphon hole water pipe is shallow, and there is no need to adjust the water flow gradient of the underground river. In addition, the V-shaped inverted siphon hole water pipe solves the problem of siltation on the upstream side of the lining structure of the upstream karst tunnel. At the same time, the water-dividing weir reduces the impact load of the water flow on the lining structure during the flood season, so that the upper and lower diverted water loads achieve a certain degree of balance.

The invention provides an intelligent design method and device for a highway channel culvert model, electronic equipment and a storage medium, and relates to the technical field of road-related computer-aided architectural design, and the method comprises the steps: recognizing an intersection point of a highway route model and a surface water system, and calculating a direction vector of a center line of a culvert according to a preset culvert intersection angle; the culvert center line information is fused to the terrain surface to generate a three-dimensional culvert center line, and a highway channel culvert model is generated; whether the distance between the center line of the three-dimensional culvert and the existing structure model is smaller than a preset threshold value or not is judged; if yes, the three-dimensional space position of the highway channel culvert model or the highway route model is adjusted, and the distance between the three-dimensional culvert center line and the existing structure model is recalculated in real time till the distance is not smaller than a preset threshold value. By the adoption of the method and device, the electronic equipment and the storage medium, the technical problems that in the prior art, culvert design layout conflicts are difficult to accurately detect, and modeling efficiency is low can be solved.

The invention relates to a bridge and culvert jacking contact network rod moving and changing method. The method comprises the steps that the height H of a bridge and culvert jacking structure and the span L1 of a bridge and culvert jacking structure are determined; the method comprises the following steps: acquiring a friction angle phi in a soil body in a jacking area of a jacking bridge and culvert, determining a fracture angle alpha of the jacking area to be 45 degrees + phi / 2 by adopting a Mohr-Coulomb intensity criterion, and calculating the length L2 of a fracture line in the railway direction to be H * tan alpha according to the fracture angle alpha; the method comprises the steps that a fracture line serves as an excavation stable face in the bridge and culvert jacking process, a span frame crossing the fracture line area is installed in the railway direction, the two ground fixing ends of the span frame are arranged at the positions L3 away from the fracture line end, L3 is the safe distance, and the span of the span frame is L1 + 2 * (L2 + L3); and the existing contact net is installed on the straddle frame according to the original position, composition structure and connection mode of the existing contact net. A permanent and temporary combination method is adopted, normal proceeding of bridge and culvert jacking construction is guaranteed, the contact net rod moving and changing steps are reduced, the railway key point time is shortened, and the influence on railway operation is reduced.

The invention provides a crab embankment passing channel and an operation and maintenance method. The crab embankment passing channel comprises a box culvert section, an inlet section and an outlet section. The box culvert section penetrates through the dike body. The inlet section is connected with one end of the box culvert section and communicated with the outer beach. The outlet section is connected with the other end of the box culvert section and communicated with the inner beach, and the dike body is located between the outer beach and the inner beach. The crab migration channel solves the problem that water in an existing crab migration channel is easy to evaporate and dissipate.

The invention provides a stability analysis method and device for a highway assembly type box culvert, and relates to the technical field of box culvert stability analysis. Firstly, the service life, geometric parameters and material characteristics of the box culvert are collected, sampling points are determined, environmental data are collected so as to analyze the influence of the environment on the material characteristics, time-dependent correction factors are introduced, and the corrected material characteristics are obtained. Then, establishing a finite element model, inputting different loads, obtaining stress and displacement data of the sampling points, evaluating the stability of the sampling points, and marking points with poor stability; generating a stability index of the sampling point at the current moment by combining the stability of the sampling point and the environmental data, and marking the sampling point with poor stability; comprehensively analyzing the stability index of each sampling point to obtain the stability index of the box culvert, and comparing the stability index of the box culvert with a preset threshold to determine the stable state of the box culvert. The implementation of the method can effectively improve the safety monitoring capability of the highway box culvert.

The invention relates to the technical field of tunnels, and provides a tunnel portal section structure suitable for steep terrains and a construction method thereof.A steep rock-soil body is vertically excavated through an upward slope step by step, a soil nailing wall is adopted to support the upward slope while the upward slope is excavated from top to bottom, a box culvert main body, a stand column assembly and a joist assembly are constructed, and the tunnel portal section structure suitable for the steep terrains is constructed. And constructing portal walls and cover arches on the two sides of the tunnel by using the constructed adjacent span bridge, the box culvert main body and the joist assembly as a construction platform, constructing a pipe shed on the basis of the cover arches, backfilling in the second backfilling space to form a second backfilling layer, constructing a shed tunnel assembly, constructing a tunnel hidden hole, and completing the construction of the tunnel portal section structure. According to the double-layer frame structure, the foundation of an upper shed tunnel assembly can be provided, a channel is provided for an existing low-grade road on the lower portion, the double-layer frame structure is used for an adjacent bridge and a bridge abutment, meanwhile, the upper portion of the box culvert is backfilled to the top face of the joist, a construction platform can be provided for tunnel entering, the lateral soil pressure of a mountain can be resisted, and the construction safety is high.

The invention discloses a prefabricated drainage box culvert steel formwork system which is suitable for the technical field of box culvert formworks. The prefabricated drainage box culvert steel formwork system comprises a pedestal, an outer formwork assembly and an inner formwork assembly. The inner formwork assembly comprises an inner formwork supporting system, a walking system and a hydraulic system. The walking system comprises a main beam and inner mold supports, the two sides of the pedestal are each provided with one inner mold support, the main beam is located over the pedestal, the bottoms of the two ends of the main beam are erected on the inner mold supports, supporting frames are arranged at the two ends, within the range between the two inner mold supports, of the main beam, and supporting legs are arranged at the two ends of the transverse bottom of each supporting frame. Each supporting leg is provided with a walking wheel. The inner mold supporting system comprises a plurality of supporting units and a mold retracting device, each supporting unit comprises an inner top mold, an inner side mold, an angle mold and the mold retracting device, and the mold retracting device is controlled by a hydraulic system to stretch out and draw back to adjust the inner side mold and the angle mold to be in place. Hydraulic linkage is combined with the walking system to achieve automatic contraction and transfer, and the internal mold turnover rate is high.

The invention relates to the technical field of pit foundation supporting, in particular to an open cut culvert foundation pit supporting structure. Comprising two columns of fences which are horizontally and oppositely arranged; the two columns of hanging plates are correspondingly matched with the two columns of fences, and the multiple hanging plates in each column are sequentially distributed and connected to the top ends of the single columns of fences in a lap joint mode; a plurality of groups of inner support assemblies are arranged, and one group of inner support assembly is connected between every two scraper blades, which are horizontally opposite to each other, in the two rows of hanging plates; two groups of enclosing purlin assemblies; the enclosing purlin assembly comprises a plurality of enclosing purlin plates which are horizontally inserted into the end pieces in a one-to-one correspondence and sliding mode, the adjacent enclosing purlin plates are matched in an inserted mode, and locking and clamping pieces used for connecting the adjacent enclosing purlin plates in series and locking the adjacent enclosing purlin plates are inserted between the adjacent enclosing purlin plates; according to the foundation pit supporting structure provided by the invention, the convenience and rapidness of supporting assembly lap joint and disassembly are improved, the difficulty of assembly and disassembly is reduced, meanwhile, the integrity and flexibility of the supporting structure are improved, damage and deformation of the supporting structure are avoided or reduced, and the reusable rate of the supporting structure is ensured.

The invention discloses an installation method of an offshore water intake tank culvert, which comprises the following steps: S1, construction preparation: determining a prefabrication site, a transportation route and engineering equipment for installation operation; s2, foundation trench leveling, foundation trench excavation, riprap foundation bed treatment, cushion block foundation bed leveling, cushion block installation and box culvert bottom foundation bed leveling are conducted; s3, box culvert shipment is conducted, specifically, a crane ship is berthed beside a box culvert prefabrication site for anchoring and positioning, and a transportation barge is berthed on one side and hoisted by the crane ship to be placed in the transportation barge; s4, box culverts are installed, two box culverts at a water intake are connected to a water intake head through a seawater pump room, each water intake box culvert is divided into three sections, and the box culverts are installed from the shore side to the sea side during installation; s5, mounting a water taking pipe, a chemical adding pipe and a chemical adding pipe groove box; s6, mold bag concrete, wherein the top face and the two sides of the box culvert connector are covered with a layer of C40 mold bag concrete with the thickness of 600 mm and the width of 2 m according to the design requirement; and S7, block stone backfilling is conducted. The problems that an offshore water taking tank culvert is tedious and complex in installation process and inconvenient to take water are solved.

The invention provides a transporting and assembling system of a tunnel box culvert and a tunneling machine comprising the transporting and assembling system, and belongs to the technical field of shield tunneling machines. Comprising a transport vehicle, a box culvert unloader, a box culvert crane, a rotation device and a box culvert fine adjustment mechanism. The transport vehicles are arranged on the spliced box culvert in the tunnel and move on the spliced box culvert in the tunneling direction of the tunnel. The box culvert fine adjustment mechanism is arranged in an assembled box culvert in the tunnel; the box culvert unloader is arranged on a rear matched trailer in the heading machine and moves on the spliced box culvert in the tunnel in the tunneling direction of the tunnel. The box culvert crane is arranged on a walking track assembly in the tunneling machine and moves on the walking track assembly in the tunneling direction. And the rotating device is arranged on the transport vehicle. Compared with the prior art, the hoisting height of the arc-shaped box culvert piece to be hoisted can be reduced, the duct piece transportation efficiency can be improved, the hoisting waiting time of a rubber-tyred vehicle in a tunnel can be shortened, and the transportation and assembly efficiency of the arc-shaped box culvert piece and the duct piece in the tunnel is improved.