1895 results about "Pier" patented technology

The present invention proposes an intermediate diaphragm-free, suspended formwork-free, and negative moment tooth block-free beam bridge, and a design method thereof. The beam bridge includes prefabricated main girders, a wet joint, lower structures, and pier cap transverse beams above the lower structures. The concrete deck slabs of adjacent prefabricated main girders are connected by the wet joint. The design method of the above beam bridge includes the following steps: S1, initial design of the main girders; S2, calculation of the non-uniform deflection of the main girders and the indirect transverse stress of the deck slabs; S3, calculation of the direct transverse stress of the deck slabs; S4, crack resistance verification of the deck slab; S5, optimization of bridge parameters to reduce the stress on the driving surface; S6, completion of the beam bridge design. The beam bridge and its design method effectively solve the problem that the existing intermediate diaphragm-free beam bridge is prone to longitudinal cracking at the joints, and realize the suspension tension without the wet joint suspended formwork of the deck slab and the negative bending moment tendon, and have better mechanical properties and better economic, environmental and social benefits, which can facilitate the promotion and application of such bridges in various types of highways , railways and municipal engineering.

The invention discloses an abutment construction settlement trend advanced early warning method based on a convolutional mixed density network, and the method comprises the following steps: collecting settlement monitoring data, and carrying out the preprocessing; calculating a fractal dimension, a Hurst index and a roughness spectrum; mapping is carried out through a fractal embedding layer, and splicing is carried out; feature representation is extracted through an improved convolutional mixed density network, and a physically constrained interactive attention mechanism is introduced for fusion; extracting settlement trend comprehensive feature representation, generating conditional probability distribution of settlement trend prediction, and defining an optimization objective function for training; generating a settlement trend prediction result according to the conditional probability distribution; and generating a settlement risk grade label and a risk intervention priority label, and outputting advanced early warning information. According to the method, fractal features and physical constraints are fused by adopting the convolutional mixed density network, accurate prediction of the settlement trend of the bridge abutment is realized, and the method has the advantages of high reliability, timely early warning and high applicability.

The invention discloses a modularized replaceable self-resetting energy consumption type bridge pier anti-collision system, and belongs to the technical field of bridge engineering structure safety. The system includes an annular rubber pad, an annularly disposed damper module, and a shape memory alloy (SMA) tow. The damper module comprises a cylinder body, high-viscosity fluid, a reset spring, a piston and a force transmission plate. The cylinder body is fixed to the pier in a surrounding mode through bolts and rubber pads, the inner wall of the cylinder body is connected with the piston through a reset spring, the piston rod end is hinged to the force transmission plates, and the SMA wire bundles are connected with the force transmission plates. When an external impact load acts on the force transmission plate, the fluid damper provides viscous energy consumption, and the SMA wire bundle, the spring and the rubber pad provide deformation energy consumption; after the collision is finished, the system can be reset to the initial position under the synergistic effect of the SMA wire bundle, the spring and the rubber pad. By means of the modular design, efficient energy consumption and self-resetting can be achieved; and meanwhile, a single damper can be quickly replaced after being damaged, so that the maintenance efficiency and the system recoverability are greatly improved.

The invention relates to the technical field of bridge pier scour monitoring, discloses an air-water-shore cooperative overwater float type bridge pier scour monitoring system, and belongs to the technical field of bridge safety monitoring. According to the system, an integrated framework is formed by a buoy platform, a shore-based cooperative monitoring station and a cloud monitoring platform. The buoy platform is fixed to a pier through a mooring lead, the underwater sonar module of the buoy platform can scan the terrain of a riverbed at multiple angles, and the overwater module integrates high-precision positioning and video monitoring. The shore-based station is provided with a laser scanner and a high-definition camera to monitor the overwater structure and the macroscopic environment of the pier. The cloud platform serves as a control center, converges the multi-source data of the buoys and the shore stations through a communication network, carries out time sequence correlation and fusion analysis, and dynamically evaluates the scour pit development and the bridge pier structure state. According to the invention, the limitation of a single monitoring mode is broken through, collaborative acquisition and intelligent fusion of air, water and shore data are realized, the comprehensiveness, accuracy and early warning capability of monitoring are remarkably improved, and reliable guarantee is provided for safe operation of bridges.

The invention provides a node connecting structure of a fabricated building and a construction method of the node connecting structure, and relates to connecting nodes for splicing prefabricated concrete columns with foundation column piers, ground beams, interlayer beams, top beams and columns. Beam column connecting joints connected with the ground beams are located at the position 0.6-1 m below the ground layer, and inter-column connecting joints are located at the position 0.9-1.2 m above the elevation of the middle axis of the interlayer beams. Each node adopts a built-in box-type steel pipe or a steel tenon-and-mortise component and is fixed through tenon-and-mortise matching of a steel tenon and a steel mortise groove and a high-strength bolt, so that rapid and accurate assembly of the beam column or between the columns is realized; and after connection is completed, a formwork is erected in a node area, high-strength concrete is cast in place, and a steel reinforced concrete stress component is formed. And the shear bearing capacity, the integrity and the anti-seismic property of the joint are obviously improved. Meanwhile, components are prefabricated in a factory and assembled in a dry mode on site, construction is convenient and fast, quality is controllable, and the structure is suitable for assembly type buildings with high-rise and high-seismic fortification requirements.

The invention discloses a BIM (Building Information Modeling) and real-time monitoring-based cylindrical pier cast-in-place cantilever variable cross-section continuous beam bridge construction early warning system and method, and relates to the technical field of construction early warning. According to the system, alignment and noise reduction are carried out on monitoring data through BIM constrained drift correction, a curvature sequence and an acceleration sequence are obtained, an energy response index and an energy characteristic index are extracted, and a space-time distribution matrix is formed. And identifying a curvature deviation development trend by using a time sequence prediction model, and dynamically evaluating structural stress distribution and a deformation state in combination with finite element analysis. When the deviation value or the stress result exceeds a multi-level threshold value, finite element reanalysis is triggered for correction. And the decision execution module judges the real-time safety level and generates an early warning signal by integrating the monitoring characteristics and the simulation result based on a robust intelligent identification model subjected to ring loss regularization training. The method can improve the monitoring precision and robustness of the construction stage, and achieves the real-time, foresight and closed-loop management and control of the structure safety.

The utility model discloses a double amplification energy consumption mechanism used between railway pier beams and a railway, comprising a rotation amplification device, one end of which is arranged at the bottom of a main beam and the other end of which is arranged on a pier; one end of the bridge-type amplifying device is connected with the rotary amplifying device, the other end of the bridge-type amplifying device is connected with a bridge pier lug plate, and the end of the bridge pier lug plate is arranged on the bridge pier; the self-resetting energy consumption damping device is arranged in the bridge type amplifying device; the self-resetting energy dissipation damping device comprises a self-resetting assembly and an energy dissipation assembly, and the self-resetting assembly and the energy dissipation assembly are of an integrated structure. According to the mechanism, through mutual cooperation of the rotation amplifying device, the bridge type amplifying device and the self-resetting energy dissipation damping device, the energy dissipation capacity of a bridge structure is improved, the relative displacement between a pier and a pier beam is reduced, structural resetting after an earthquake and energy consumption in the earthquake are achieved through self-resetting energy dissipation, damage to components of a bridge main body structure is avoided, and the service life of the bridge is prolonged. Damage control and post-earthquake function restorability of the bridge structure are achieved.

The invention relates to a method and a device for mounting roadway girders or rail elements on bridge piers to form a bridge structure. The process begins with transport, during which a deck beam 2 is moved beneath a lifting and transport system 1 on the assembly support 3. By pivoting the assembly support 3 on the lifting and transport system 1, a lateral offset is achieved, and the deck beam 2 to be installed is pivoted into the longitudinal axis of the already installed deck beam 2. It can then be lowered onto the bridge pier 5 and welded to the already installed deck beam 2.

The invention relates to a bridge bent cap dismantling construction method, and belongs to the technical field of bridge reconstruction and extension construction. The method aims at solving the technical problems that a traditional dismantling process is low in efficiency and high in safety risk, and a reserved structure is prone to being damaged. According to the technical scheme, the method comprises the steps that cutting, blocking and hoisting equipment is planned according to the size and weight of the bent cap; a diamond wire sawing machine is adopted for cutting, and lifting force is continuously applied by hoisting equipment in the whole cutting process; construction is carried out according to the sequence that a bent cap main body part between the pier columns is cut off firstly, then a supporting system and an operation platform are erected on the pier columns, and then bent cap cantilever parts on the outer sides of the pier columns are cut off; and finally, crushing treatment and column top fine chiseling are conducted on a platform, the elevation is accurately controlled, and the steel bars are stripped. The method is mainly used for safe, efficient and accurate dismantling of the old bent cap in highway and urban bridge reconstruction and extension projects.

The invention discloses a self-resetting multi-section prefabricated assembled pier and a construction method, the self-resetting multi-section prefabricated assembled pier comprises a prefabricated cover beam, a pier column and a pier bearing platform, the pier column is formed by splicing a plurality of prefabricated sections, and is connected with the prefabricated cover beam through the prefabricated section located at the top; the prefabricated bent cap is connected with the pier bearing platform through a prefabricated section located at the bottom in a bell and spigot joint mode, and the non-adhesive prestressed tendons are connected with the prefabricated bent cap and the pier bearing platform and provide self-resetting capacity for the pier. According to the multi-section prefabricated assembled pier with the self-resetting capacity and the construction method, the formworks are prefabricated in a unified mode in a factory, the efficiency is improved while the prefabrication and construction cost is reduced, the mode of prefabricated section splicing and shallow socket connection is adopted, construction in narrow and complex terrains is facilitated, prestressed tendons used for self-resetting are arranged, and the construction efficiency is improved. The overall anti-seismic performance is improved, the integrity, rigidity and bearing capacity of the assembled pier are improved, the service life is prolonged, and meanwhile the maintenance cost is reduced.

The invention discloses an anti-overturning active control method and device for a single-column pier bridge and a medium. The method comprises the steps that a thundersight displacement monitoring system and a hydraulic driving system are deployed; leighting multi-mode fusion data are obtained, and the transverse overturning angle of a beam body is calculated; constructing a digital twinborn body for predicting the overturning state of the bridge structure, and predicting the overturning states of the bridge at multiple moments in the future; and constructing an intelligent agent, and controlling the hydraulic driving system to execute an anti-overturning action based on the predicted bridge overturning state. The device and the medium are both used for implementing the method. The beneficial effects of the invention are that the structure displacement monitoring method based on Reighting heterogeneous fusion is provided for a traditional mode of a single structure displacement detection means, interference factor identification and weighted fusion in different environments are realized, and the reliability of monitored structure displacement data is ensured.

The invention discloses a rapid tool lifting system for road and bridge construction. The rapid tool lifting system comprises a rail and a sliding table installed on the rail in a sliding mode. The driving mechanism is fixedly mounted on the sliding table; the lifting mechanism is mounted at the upper end of the driving mechanism; the connecting seat is fixed at the lifting end of the lifting mechanism; the lifting mechanism is fixedly mounted at the front end of the connecting seat; and the winding mechanism is detachably mounted at the upper end of the connecting seat. The rainproof cloth which can be controlled by the rolling mechanism is arranged on the outer side of the lifting mechanism, so that the flexible protective cover which can be opened and closed is formed, when the tool is lifted and moved, the rainproof cloth can be put down, a wrapping space is formed, the tool is effectively prevented from colliding and scraping with a surrounding bridge structure (such as a pier, a guardrail and a box girder), and the service life of the tool is prolonged. And meanwhile, most of pollutants such as dust and cement paste can be isolated, cleaning of tools and a lifting mechanism is protected, and the service life of equipment is prolonged.

The application provides a bridge damage assessment method and system caused by ship collision and a medium, and relates to the technical field of bridge health monitoring. The method comprises the following steps: collecting acceleration response signal arrays of different heights and positions of a bridge pier, and generating a time series matrix; drawing a time-frequency coherence spectrum under different base functions, and obtaining a coherence spectrum entropy; determining the optimal base function based on the information entropy principle; obtaining the local correlation coefficient of the time series matrix in the time-frequency space under the optimal base function, and drawing a time-frequency coherence spectrum; evaluating the correlation and dependence degree between time series according to the local correlation coefficient and the time-frequency coherence spectrum, and judging whether the ship-bridge collision damage occurs; if the collision damage occurs, calculating the time-frequency coherence damage factor of the time series matrix at different positions, and determining the collision position and the collision degree according to the maximum protruding value in the time-frequency coherence damage factor trajectory curve. The method can effectively separate the influence of environmental factors, and provides basic method support for establishing the ship-bridge collision damage assessment technology.

The present application relates to the technical field of existing building foundation reinforcement, and provides a method for reinforcing the foundation of an existing building by arch bridge grouting, which comprises the following steps: positioning grouting hole points on the surface of a building raft; performing first vertical drilling grouting according to some of the grouting hole points to form a plurality of bridge pier type pile foundations, which are arranged at intervals on the edges of the building raft surface; performing second vertical drilling grouting according to another part of the grouting hole points to form an arch-shaped arch body foundation between the bridge pier type pile foundations; arranging inclined reinforcing bodies connecting the bridge pier type pile foundations and the arch body foundations between the bridge pier type pile foundations and the arch body foundations; arranging pile side support bodies inserted into hard soil layers on the side of each bridge pier type pile foundation away from the arch body foundation; and completing the reinforcement of the foundation under the building raft. The present application can reinforce the foundation of an existing building on a soft foundation, and can improve the bearing capacity of the building foundation and prevent uneven settlement of the foundation after the building foundation is reinforced.

The invention discloses a sliding system for quickly erecting a super-long multi-connected curve steel truss girder and a construction method of the sliding system. The sliding system comprises a sliding unit and a monitoring unit, the sliding units are respectively arranged at the upper ends of the pier bracket and the assembling platform; the monitoring unit is in communication connection with the sliding unit in a wired or wireless mode. In the construction process of sliding erection of the curved steel trussed beams, after curved steel trussed beam components are lifted to an assembling platform through a lifting gantry crane and assembled into sections of the curved steel trussed beams, the sliding unit is regulated and controlled through the monitoring unit to enable each section of the curved steel trussed beams to slide to a designed position and fall, and erection of each section of the curved steel trussed beams is completed. According to the method, real-time control over the moving track of the curved steel truss girder is achieved, the purpose of rapid sliding erection construction of the curved steel truss girder is achieved, meanwhile, the occupied area of a construction site is small, the construction efficiency is high, the method is suitable for the curved steel truss girders with different curvatures, and the method has extremely high use value.

The invention belongs to the technical field of computer vision monitoring, and relates to a bridge pier anti-collision facility operation state visual monitoring method and system. The method comprises the following steps: acquiring an anti-collision facility video stream under natural water flow, tracking feature points and mapping the feature points into physical plane coordinates; performing time sequence analysis on the coordinates, and extracting a connection gap signal and a vertical displacement signal; constructing a structure health dynamic model, converting a connection gap signal into a connection looseness index reflecting a connection toggle clip state, and converting a vertical displacement signal into a relative floating state attenuation index reflecting a unit buoyancy state; and the indexes are compared with a preset threshold value, so that whether the anti-collision facility has the risk of dynamic loosening or leakage water inflow or not is judged. According to the invention, buoyancy loss in the anti-collision device and dynamic looseness of the connecting structure can be effectively identified, and the bridge protection safety is improved.

The invention relates to the technical field of bridge pier construction guidance and monitoring, in particular to an intelligent sensing type expanded pier and a construction method. The expansion pier comprises an optical fiber network system and an intelligent steel mold, and the optical fiber network system comprises armored optical fibers and reinforced protection optical fibers special for a normal water level, is embedded in an expansion section and is fixed to a steel reinforcement framework; pressure, displacement and three-dimensional positioning sensors are arranged in the intelligent steel mold, and the intelligent steel mold is connected with a construction monitoring platform through a wireless transmission module. The method comprises the steps of planning an optical fiber path based on original bridge pier stress analysis, customizing and calibrating an intelligent steel mold containing a sensor, pouring concrete and monitoring and adjusting parameters in real time after the steel mold is assembled, embedding optical fibers when the concrete is poured to a preset elevation, and regularly collecting optical fiber data and establishing a health model in a bridge operation stage. Structural expansion and health monitoring are deeply fused, the construction quality is managed and controlled in real time, the operation risk is early warned in advance, data support is provided for intelligent bridge management and maintenance, the service life of a bridge is prolonged, and the whole life cycle cost is reduced.

The invention provides a bridge incremental launching construction monitoring method and system based on multi-source data fusion, and the method comprises the steps: obtaining the strain and temperature data of a box girder in real time in a non-incremental launching state, and judging whether a construction environment is abnormal or not according to the strain and temperature data of the box girder; in the pushing state, posture data of the box girder, stress and strain of the box girder and displacement of the temporary piers are obtained in real time, and real-time deviation correction or manual intervention is conducted according to the posture data of the box girder, the stress of the box girder and the displacement of the temporary piers. By detecting multi-source data such as jacking, pushing, deviation correction displacement, structural strain, temperature and oil pressure, real-time deviation correction and construction environment adjustment are achieved, the pushing precision can be guaranteed, and structural instability is avoided.

The utility model discloses a pier maintenance spraying device for bridge construction, and relates to the technical field of pier maintenance. The spraying device comprises a supporting assembly, a lifting assembly is arranged at the top of the supporting assembly, a spraying assembly is arranged at the lifting end of the lifting assembly, a rotating assembly is arranged on the lower side of the spraying assembly, and the rotating assembly is in power connection with the spraying assembly. The spraying assembly moves up and down on the outer side of the bridge pier through the lifting assembly, the spraying assembly moves circumferentially along the bridge pier through the rotating assembly, and the spraying assembly rotates around the bridge pier by a circle every time the spraying assembly ascends and descends by a certain height; therefore, only one spraying assembly needs to be installed on the lifting assembly, comprehensive spraying maintenance can be conducted on the outer surface of the bridge pier, and therefore the spraying assembly can be installed on the lifting assembly conveniently; and meanwhile, a water storage tank, a rotating frame and a water pumping pipe are arranged, so that a pipeline for transporting the water source cannot be wound.

The invention discloses a bridge ship impact point positioning method and system based on shock wave time difference analysis, and the method comprises the steps: arranging a vibration sensor array on a plurality of piers in a non-navigable hole region of a bridge, and connecting the vibration sensor array with an edge calculation module; impact characteristics are extracted, and vibration acceleration is calculated; setting a dynamic threshold value, and calculating the coordinates of the impact point when the vibration acceleration peak value exceeds the dynamic threshold value; in the calculation process, double constraint conditions are constructed by using time-frequency joint similarity and time difference of impact characteristics, and correlation of other vibration sensors is carried out; constructing a positioning equation set special for the concrete structure bridge; and resolving a positioning equation set and outputting impact point coordinates. According to the system, a vibration sensor array is used for collecting vibration signals; the edge calculation module is used for extracting impact characteristics and calculating vibration acceleration and impact point coordinates of the vibration sensor; the central processing unit is used for outputting impact point coordinates and damage indexes. According to the method and the system, the impact point in the event that the ship impacts the bridge can be quickly and accurately positioned.

The application discloses a kind of pedestrian bridge tensile device and installation method, comprising: pier and the beam of being set on pier;Vertical steel plate is set in the bottom of the beam downward;Vertical baffle is set in the lower end of the vertical steel plate;Corresponding vertical steel plate above vertical baffle is set with tensile structural member on the side of the pier.The application can effectively resist the tensile force generated at the support point of pedestrian bridge, and has no influence on the longitudinal expansion of bridge and the stress state of support.At the same time, the application has simple structure, clear stress, convenient construction, low cost, and is suitable for popularization and application in the field of pedestrian bridge structure.

The invention discloses an up-and-down suspension cage for bridge construction, and relates to the technical field of bridge construction, the up-and-down suspension cage comprises a stacked frame type cage frame unit, the cage frame unit is composed of an upper frame and a lower base which can be vertically folded in parallel, the upper frame is provided with a suspension ring used for carrying a suspension cable in a penetrating mode, and the lower base is used for carrying operators and tools; the broken rope sensing unit is arranged below the hanging ring and used for detecting the abnormal state of the hanging cable; the anti-falling embracing unit is arranged below the lower base, and a ring rope of the anti-falling embracing unit surrounds the pier or the stand column; the power supply control unit is electrically connected with the sensing and executing unit, when the suspension cable is broken, the loop rope is controlled to be tightened towards the lower base, slow descending and emergency suspension of the suspension cage are achieved by applying force to a pier or a stand column, and high-altitude falling is avoided; the suspension cage is simple in structure, flexible in arrangement and high in adaptability, and the safety and the emergency response capability of bridge aerial work are improved; the technical problems that an existing bridge construction suspension cage lacks an emergency safety mechanism, and is insufficient in safety redundancy and operation stability are solved.

The application provides a pier top deviation monitoring device and a monitoring method, and relates to the technical field of deviation monitoring.The monitoring device comprises a first distance measuring element, a second distance measuring element, a third distance measuring element, a first distance measuring plate, a second distance measuring plate and a third distance measuring plate.The first distance measuring element measures distance along a horizontal direction, and the distance measuring surface of the first distance measuring plate is perpendicular to the distance measuring direction of the first distance measuring element.The second distance measuring element measures distance along a gravity direction, and the distance measuring surface of the second distance measuring plate is perpendicular to the distance measuring direction of the second distance measuring element.The third distance measuring element measures distance along a first direction, and the distance measuring surface of the third distance measuring plate is perpendicular to the distance measuring direction of the third distance measuring element.There is a deviation angle between the first direction and the gravity direction.The application can measure the inclination angle of the pier foundation and the elastic deformation of the pier body, and is simple to install, convenient to measure, easy to maintain, can monitor the health condition of the pier, has a low cost and has no negative influence on the pier.

This invention discloses an intelligent self-elevating and climbing integrated formwork device for bridge piers, relating to the field of bridge pier technology. It includes a pier body with a fixing ring fitted around its outer edge near the bottom. Three hydraulic cylinders are fixedly connected to the top of the fixing ring near both the front and rear sides. Two operating platforms are moved to the surface of the pier body using hoisting equipment, and the operating platforms rest on top of a fixed plate on the hydraulic cylinders. The fixed plate supports the two operating platforms. A second bolt connects and limits the connection between the fixed plate and the operating platforms. Multiple baffles are removed, and the threaded rods at the bottom of the baffles pass through through holes in the operating platforms. A second nut rotates the baffles to the surface of the threaded rods, causing the baffles to move a support plate. The support plate is located within a slot on the top of the operating platform. A third bolt installs the support plate onto the surface of the operating platform, thus completing the installation of the baffles and ensuring the safety of the operators.

To provide a method for removing an existing hollow floor slab supported from below by a substructure, which can safely remove the existing hollow floor slab without restricting the space below the existing hollow floor slab and can improve workability. [Solution] The method for removing an existing hollow deck according to the embodiment is a method for removing an existing hollow deck 1 supported by a pier 8, and includes an installation process for attaching anchor brackets 21, 21 to the underside of each of the existing hollow deck 1's piers 8, 8 between a pair of piers 8, 8, attaching an external cable 3 to the anchor brackets 21, 21, and tensioning the external cable 3; a cutting process for cutting the existing hollow deck 1 in the bridge axis direction X after tensioning the external cable 3 to form a first block 71 having the external cable 3; and a removal process for removing the first block 71 using lifting devices 83, 84.

The invention relates to the technical field of bridge construction, in particular to a bridge pier embedded right-angle bracket support design method and system.The method comprises the steps that geological parameters of a bridge construction area are obtained, and the geological parameters are mapped into load reduction coefficients of bridge pier sites; calculating the design load of the right-angle bracket, synchronously generating a parameterized model of the Bailey buckle, and outputting an initial bracket model of the integrated buckle structure; collaborative optimization of a pier column main reinforcement passing path and a Bailey ring buckle space is carried out on the initial bracket model, and an optimized bracket model with a perforated structure is obtained; performing multi-parameter iterative simulation analysis on the optimized bracket model to obtain a plurality of candidate design schemes; and performing multi-target evaluation on the plurality of candidate design schemes to obtain an optimal design scheme. By means of the method, the problems that in the prior art, geological conditions are difficult to quantify, load calculation lacks dynamic correction, and the space of the bracket and the space of the Bailey ring buckle support are difficult to cooperate are effectively solved, and structural stress optimization and construction arrangement integrated design is achieved.

The present application relates to high pier construction technical field, specifically a kind of roller mould device for high pier construction, including main mould frame, several equipment supports being arranged on main mould frame, rolling device being arranged on equipment support;Rolling device includes the roller body assembly being arranged in the front of rolling device, and the recovery assembly being arranged in the rear of roller body assembly;Roller body assembly includes support frame, roller body being arranged on support frame, and the material scraping frame being erected on support frame;Material scraping frame is provided with material scraping machine piece, material scraping machine piece is inclined to the roller surface of roller body, and the side of roller body is moved towards material scraping machine piece;Recovery assembly includes the material receiving box being arranged in the rear of material scraping frame, the rear of material scraping frame is provided with guide frame plate, and guide frame plate is used to connect material receiving box and material scraping machine piece.The present application designs material scraping machine piece to separate the concrete on the roller surface of roller body, and concrete is collected in time, so that the construction process of overall high pier roller mould is more smooth.

The utility model discloses an alignment device for mounting a prefabricated bridge body and a bridge pier, which comprises a guide piece and a limiting rod which are sleeved on the outer sides of a plurality of reinforcing steel bars and are mutually spliced for use, the side wall of the guide piece is provided with a side notch for hooping the reinforcing steel bars at the opposite angles of the bridge pier, and the guide piece is divided into a main sleeve, an auxiliary sleeve and a table sleeve according to functions, a hinge shaft is arranged between the main sleeve and the auxiliary sleeve, and the table sleeve guides the sleeve to slide into the main sleeve. According to the aligning device for installing the prefabricated bridge body and the bridge pier, the four corner sleeves are used for rapid sliding alignment through the gathering function of the inner wall of the table sleeve, reinforcing steel bars in the main sleeve can be conveniently inserted into the sleeves for accurate butt joint, the purpose that the guiding function can be achieved before inserting and assembling is achieved, and the assembling efficiency is improved. Even if the external environment causes certain deviation of the casing pipe, the accurate butt joint of the casing pipe and the reinforcing steel bar is not interfered, the safety of the casing pipe in the using process is guaranteed, and the influence on grouting work is avoided.

The application discloses a supporting excavation method for partitioning and leaving piers of soft foundation, and belongs to the technical field of foundation pit supporting of geotechnical engineering. The method comprises the following steps: S1, integrated quantitative design and digital modeling, defining a composite soil pier unit composed of an artificially reinforced core and an undisturbed soil body, calculating a bearing contribution rate and performing non-uniform layout and stability checking; S2, prefabrication and accurate implantation of the structural soil pier unit; S3, partitioned asynchronous excavation based on the structural soil pier, batch excavation of "warehouse rooms" and immediate support of exposed side walls; S4, formation of a permanent composite foundation, rigid connection of the bottom plate and the soil pier through a three-level structural connection system, and construction of a waterproof drainage system, a stiffness transition zone and a health monitoring sensor network. The application integrates the functions of temporary support and permanent foundation, significantly reduces the engineering cost, improves the foundation bearing capacity and anti-settlement capacity, and realizes intelligent monitoring and active regulation in the whole life cycle.

The present application relates to the field of welding quality detection, and more particularly to a pier column stirrup welding quality automatic detection method based on the Internet of Things. First, the sensor is laid out and the basic data is obtained, the unified time sequence is introduced for time reconstruction, and the ultrasonic data, resistance data and temperature data after time reconstruction are obtained. Then, based on the ultrasonic data and resistance data after time reconstruction, the energy of the ultrasonic data and the normalized resistance characteristics are obtained, the coupling characteristic response value is calculated, and the defect response factor is obtained in combination with the energy of the ultrasonic data. Based on the temperature data after time reconstruction and the coupling characteristic response value, the corrected coupling characteristic response value is obtained, the final comprehensive index is constructed in combination with the defect response factor, the quality judgment value is further obtained, and the welding quality grade judgment is performed. The technical problems that the internal defects of the weld are difficult to be accurately identified, and the collected data is inconsistent in time scale and physical dimension, and difficult to be effectively fused are solved.