18180results about "Bridge structural details" patented technology

Disclosed in the present invention is a construction process of an offshore bridge high-rise pile platform. A cofferdam of a steel-concrete structure is used for construction. The cofferdam consists of a cofferdam bottom plate prefabricated by means of reinforced concrete and a steel side formwork. The construction process comprises the following stages: a preparation stage, a cofferdam mounting stage, a cofferdam lowering stage, a cofferdam bottom plate blocking and water pumping stage, and a platform concrete pouring stage. The preparation stage comprises the following steps: pile foundation casing sinking, cast-in-place pile construction, pile foundation casing pile head trimming, cofferdam bottom plate and skirt plate prefabrication, and steel side formwork manufacturing. The cofferdam mounting stage comprises: first, mounting the cofferdam bottom plate, and then mounting the steel side formwork, wherein the cofferdam bottom plate is mounted by means of suspension hangers, and each suspension hanger comprises a pile cap, an inverted hanging beam, and two first finish-rolled twisted steel bars. The cofferdam lowering stage comprises mounting a jack lowering system on the cofferdam bottom plate, wherein the cofferdam lowering system comprises I-shaped hangers, carrying pole beams, center hole jacks, and steel strands. The construction process of the present invention can greatly reduce the construction difficulty and can improve the construction efficiency.

The invention relates to a pier damage early warning analysis method under the action of flood, and solves the technical problems of high disaster recognition cost, low bridge damage recognition precision, untimely early warning and alarming and the like based on monitoring equipment in the existing concrete bridge flood-disaster-resistant technology. According to the method, by means of an established plastic damage simulation model, expensive sensors do not need to be arranged on a bridge structure, only basic information of the bridge structure and flood information such as the flow speed, the water level and the scouring depth are obtained, and damage and failure analysis of the bridge pier structure under the action of different influence factors by the flood action can be studied; structural damage state qualitative analysis and modal integrity damage index quantitative analysis are combined to determine bridge pier structure damage grades and damage failure judgment criteria, and early warning values corresponding to different damage grades of a bridge pier are inverted, so that accurate damage identification and rapid grading early warning of the bridge pier structure under the flood effect are realized. The flood disaster resistance of the bridge structure is improved, safe operation of the bridge is guaranteed, and the service life of the bridge is prolonged.

The invention provides a Transform and CNN fused crack detection and structure evaluation system and method. The system comprises an image preprocessing module, a crack feature extraction module, a crack positioning and classification module, a crack boundary refinement module and a structure integrity evaluation module. Through combination of the CNN and the Vision Transform, local and global features in the image can be extracted at the same time, and the precision of crack detection is enhanced. The dynamic attention mechanism is used for refining fracture boundaries and improving fracture positioning and recognition effects. And the structure health assessment module combines crack information and structure stress analysis, performs structure risk assessment by using a support vector machine or a random forest, and outputs a structure health state and a repair suggestion. The invention further provides an evaluation scheme of the system. The method improves the precision and robustness of crack detection, has higher multi-scale detection capability, noise robustness and real-time performance, and is suitable for automatic monitoring and health management of civil infrastructures.

The invention provides an inhaul cable vibration control device and a vibration control method. The device comprises a speed type damping unit and a tuned mass damping unit, the speed type damping unit and the tuned mass damping unit are arranged close to the cable beam anchoring end of the inhaul cable, the speed type damping unit comprises two speed type dampers, and the two speed type dampers are symmetrically arranged on the two sides of the cable face of the inhaul cable; the two ends of the speed type damper are connected with the inhaul cable and the ground respectively. The method comprises the following steps: determining the relative arrangement positions of a speed type damping unit and a tuned mass damping unit on the inhaul cable according to the determined broadband vibration order and narrow-band vibration order of the inhaul cable; and configuration parameters of the speed type damping unit and the tuned mass damping unit are determined, the inhaul cable is configured according to the determined damping coefficient of the speed type damper and the cable direction installation positions of the speed type damping unit and the tuned mass damping unit, and vibration control is achieved through the configured inhaul cable. The method has the advantages of guaranteeing the vibration reduction effect of the inhaul cable, being convenient to construct and the like.

The invention relates to the technical field of structure inspection, in particular to a bridge pier underwater structure inspection system based on an unmanned underwater robot, which comprises an inspection period adjustment module, an anomaly recognition module, an automatic supplementary shooting module, a damage evaluation module and a bridge pier anomaly evaluation module. According to the invention, bridge pier underwater structure inspection is executed through the unmanned underwater robot, the inspection period is dynamically adjusted according to the traffic flow, fine management of inspection work is realized, the inspection frequency can be adjusted according to actual use conditions and external influence factors, potential structure problems are effectively prevented and found, and the inspection efficiency is improved. The damage area can be quickly and accurately calibrated by image acquisition and automatic anomaly recognition performed by the unmanned robot, supplementary shooting is performed when necessary, the image quality is improved, the data reliability is ensured, and the influence of damage on the structural safety can be accurately evaluated by comparing the positions and overlap ratios of the damage area and the key bearing area of the bridge pier, so that the safety of the bridge pier is improved. And a scientific basis is provided for maintenance decision.

The invention discloses a cable-stayed and buckled multi-cable synchronous regulation and control method and system based on hydraulic cooperation, and the method comprises the steps: obtaining the information of each cable, configuring a hydraulic device for each cable, grading and dividing the tensioning operation of the hydraulic devices into a plurality of tensioning levels, distributing a sub-target tensioning force for each tensioning level, the hydraulic device is controlled to stretch each inhaul cable from the first stretch-draw level according to the number of the inhaul cable and the initial stretch-draw force of the inhaul cable until the sub-target stretch-draw force corresponding to the current stretch-draw level is reached, the next stretch-draw level is entered, and the current stretch-draw force of each inhaul cable is monitored in real time; comparing the pressure difference approaching variable with a pressure difference approaching variable threshold value, and finely adjusting the corresponding inhaul cable according to a comparison result; the method comprises the following steps: generating a plurality of tension proximity diagrams according to the real-time monitored current tension force of each inhaul cable, searching for the inhaul cable with tension kick according to node conditions in the tension proximity diagrams, and sending out alarm information.

The invention provides a bridge built-in multi-dimensional self-adaptive tuning vibration reduction and monitoring device based on air energy. The bridge built-in multi-dimensional self-adaptive tuning vibration reduction and monitoring device mainly comprises a bridge health monitoring system, an air energy device, a steel plate spring, a belleville spring, an electromagnetic damper, a hydraulic damper, a hydraulic displacement amplification mechanism and an actuator. The bridge health monitoring system is used for monitoring and analyzing the state of a bridge in real time, finding potential structural problems in time and driving the tuning vibration reduction device to respond according to the monitored vibration and temperature conditions to achieve self-adaptive control over bridge vibration, and the air energy device uses the quality characteristic of the air energy device as a mass block of the tuning vibration reduction device to achieve self-adaptive control over bridge vibration. The damping device plays a key role in vibration reduction, can provide temperature and humidity control for stable operation of a bridge and a monitoring system, and is matched with a spring, a damping system, a hydraulic displacement amplifying mechanism and an actuator to effectively control multi-directional complex vibration of the bridge, adjust the temperature difference between the inside and the outside of the bridge and prolong the service life of the bridge.

Disclosed in the present invention are an integrated intelligent tower building apparatus for industrial construction of a bridge tower and a method. The integrated intelligent tower building apparatus comprises: a frame body, an automatic climbing mechanism, a template system, a vibrating system, a material spreading system, an opening / closing mechanism, a maintenance system, and an automatic template cleaning robot. The opening / closing mechanism comprises a tripod, an opening / closing oil cylinder, a pulling plate, and an opening / closing beam. The tripod is welded under a runway beam of an outer mold support. One end of the opening / closing oil cylinder is hinged to and fixed to a vertical rod of the tripod, and the other end of the opening / closing oil cylinder is hinged to the opening / closing beam. The opening / closing beam is hinged to a back arris of an outer template, and the other end of the opening / closing beam is hinged to the lower end of the vertical rod of the tripod. One end of the pulling plate is hinged to the side surface of the runway beam, and the other end of the pulling plate is hinged to a platform beam on the back of the template. The present invention achieves the improvement of the automation and intelligence level of the apparatus in each process of main tower construction.

The invention relates to the technical field of cable-stayed bridge steel anchor beam cable force optimization, in particular to a large-span cable-stayed bridge steel anchor beam cable force optimization method and system. The method comprises the steps of obtaining original data of a large-span cable-stayed bridge steel anchor beam; performing data preprocessing on the obtained original data of the large-span cable-stayed bridge steel anchor beam; capturing a long-distance error dependency relationship by utilizing Transform and predicting an accumulative error of a future segment; using the convolutional LSTM network to generate an optimal adjustment amount based on the accumulative error; and solving an optimal cable force scheme by using a cable force optimization algorithm. According to the method, the precision limitation of a traditional installation process is thoroughly changed by constructing an intelligent prediction model and a multi-dimensional closed-loop control system. Based on the error prediction technology of multi-source data fusion, the nonlinear law of error transmission can be accurately captured, the error development trend is pre-judged in advance, active compensation is implemented, and the installation deviation of the steel anchor beam in the transverse bridge direction, the longitudinal bridge direction and the elevation direction is remarkably reduced.

The invention discloses a bridge crack detection system based on bridge safety, and relates to the technical field of bridge safety detection, and the system comprises a region division module which divides a bridge structure into a key detection region and a secondary detection region according to bridge historical detection data; the data acquisition module is used for respectively arranging corresponding detection equipment in the key detection area and the secondary detection area and acquiring the number, the size and the specific position of cracks in real time, and the sizes of the cracks comprise large cracks and small cracks. The method is beneficial for determining whether the cracks which seem not to threaten the safety of the bridge can gradually evolve into potential hazards which influence the overall safety of the bridge under the combined action of the cracks and other cracks, so that more accurate and reliable technical support is provided for safety management and maintenance of the bridge.

The invention belongs to the technical field of vibration control, and provides a CFD numerical simulation-based TMDI control bridge rigid main beam low-frequency vertical vortex vibration research method, which comprises the following steps of: establishing a rigid main beam-TMDI vertical coupling vibration equation in a wind field, carrying out order reduction processing on the coupling vibration equation by constructing a state equation, embedding a solving process into Fluent software by utilizing a user-defined function, and carrying out low-frequency vertical vortex vibration research on a rigid main beam-TMDI control bridge rigid main beam. And the vertical vortex-induced vibration response of the controlled main beam is obtained by alternately solving the flow field domain and the structural domain. Compared with a theoretical method, the fluid-solid coupling effect can be directly simulated, a vortex-induced force model does not need to be assumed, and the result is more reliable; compared with a wind tunnel test method, various parameters of the structure and the TMDI can be accurately set, physical space constraint is avoided, machining errors do not exist, the method is not limited to low wind speed, and the vibration suppression effect can be verified more conveniently; compared with an on-site actual measurement method, the method does not need to passively wait for vertical vortex vibration of a real bridge for a long time, can obtain richer information, facilitates the development of vibration suppression mechanism analysis, and greatly reduces the research difficulty and cost.

The invention discloses a pile-beam integrated bridge girder erection machine which comprises a main beam, a front auxiliary supporting leg, a front supporting leg, a middle supporting leg, a rear supporting leg and a pile driving device, and is characterized in that the main beam comprises a left auxiliary main beam and a right auxiliary main beam which extend front and back, and a steel bar connecting frame is arranged on the front portion between the two auxiliary main beams for connection and fixation; supporting beams extending front and back are fixed to the left end and the right end of a bottom beam of each auxiliary main beam, and a top beam horizontally extending front and back is fixed to the top of each auxiliary main beam. A temporary supporting leg composed of a temporary connecting base, a temporary supporting leg barrel and a temporary supporting block which are installed at the front end of a main beam can support the front end of the main beam after the main beam moves forwards, stable supporting of the main beam is guaranteed, and components such as a front supporting leg and a middle supporting leg move forwards normally in the follow-up process; the left side and the right side of the supporting base are each provided with the two reverse rolling wheel sets, and the reverse rolling wheel sets are installed on the main beam, so that the stress dispersion effect on the main beam is better, and the stress of the main beam is more uniform.

The invention discloses a through steel box tied arch bridge construction monitoring system and method. The system comprises a data acquisition module, a data processing and analysis module, a control decision module and an information management and feedback module. The data acquisition module acquires data such as a girder, an arch rib, a suspender and an environment; the data processing and analysis module analyzes the structure state after preprocessing the data, identifies parameters and corrects the model; the control decision module generates a control instruction, and performs early warning and emergency processing; and the information management and feedback module stores data and feeds back information. The method comprises preparation before construction, construction process monitoring and abnormal condition processing. Construction can be accurately monitored in real time, the quality and safety of finished bridges are ensured, error accumulation is reduced, data are provided for later maintenance, the durability of the bridges is improved, and the method is suitable for through steel box tied arch bridge construction monitoring.

The invention relates to an expansion joint (10) for connecting regions of a rail-based grid storage system (50, 50′, 50″; 104, 104′, 104″), the expansion joint (10) comprising: —a first rail element (12) and a second rail element (11), the rail elements (12, 11) being elongate and configured to slide relative to one another in a longitudinal direction in a junction area where they overlap, —the expansion joint (10) having a profiled upper surface that defines one or more tracks (27′, 27″) for supporting container handling vehicles (200, 300, 400), the tracks (27′, 27″) extending from the first rail element (12) through the junction area to the second rail element (11), wherein in the junction area, each rail element (11, 12) provides a portion of the or each track (27′, 27″) of the profiled upper surface so that there is a transition extending along the expansion joint (10) from the first rail element (12) to the second rail element (10) for the or each track (27′, 27″). The invention further relates to an automated storage and retrieval system comprising said expansion joint (10) and a method of connecting regions (50, 50′, 50″; 104, 104′, 104″) of a rail-based grid storage system and / or delivery rail system using one or more of the expansion joints (10)

The utility model discloses a bridge pile foundation protection device which comprises a protection pile foundation clamping plate, a buffering protection plate, a flow guide plate, a flow guide plate driving structure, an anti-collision buffering assembly and an anti-collision buffering balance assembly. The protective pile foundation clamping plate is detachably arranged on the side wall of a pile foundation and fixed to the pile foundation through a fastening assembly. Buffering protection plates are circumferentially distributed on the outer sides of the protection pile foundation clamping plates and used for bearing impact force of foreign objects. An anti-collision buffering assembly is arranged between the buffering protection plate and the protection pile foundation clamping plate and used for buffering and absorbing force generated when foreign matters collide with the buffering protection plate. An anti-collision buffering balance assembly is arranged on the periphery of the anti-collision buffering assembly and used for balancing the buffering protection plate; and a flow guide plate is movably arranged on the buffer protection plate, is unfolded under the action of a flow guide plate driving structure and is used for guiding and dividing flood flow. The river-crossing bridge pile foundation structure solves the problem that a river-crossing bridge pile foundation can be damaged under the impact effect of flood flow.

The invention discloses a rail transit U-shaped beam wall-mounted pipeline type ballastless track maintenance system which comprises a plurality of telescopic supporting units arranged at intervals in the length direction of a ballastless track, a plurality of maintenance spraying pipes arranged side by side are installed between the telescopic supporting units, the maintenance spraying pipes are located above the ballastless track, and the telescopic supporting units are connected with the maintenance spraying pipes. The two ends of each maintenance spraying pipe communicate with the water inlet pipe system and the communicating pipe system correspondingly, the inlet end of the water inlet pipe system communicates with the water storage tank through the pressure water pump, and the telescopic supporting units stretch across the two sides of the U-shaped beam. The ballastless track can be effectively subjected to spraying maintenance operation, the purpose of maintaining different areas in the transverse direction of the ballastless track is achieved, spraying maintenance sufficiency is ensured, evaporation of local moisture of the ballastless track is made up, the situation of excessive water supplementing is avoided, and the purpose of overall moving can be achieved. The device is suitable for the technical field of watering maintenance of the ballastless track on the U-shaped beam.

The invention provides a depth image-based position and posture adjustment method for a reinforcing steel bar binding robot. In the method, firstly, a depth image of a reinforcement cage is obtained; then feature extraction is carried out on the depth image to obtain feature points; then, pose information of the reinforcement cage is obtained through calculation based on the feature points, and coordinate information of the target position is calculated based on the pose information; and based on the current coordinates and the coordinate information of the reinforcing steel bar binding robot, planning an operation path of the reinforcing steel bar binding robot, and based on the operation path, controlling the reinforcing steel bar binding robot to move to a target position. And when the steel bar binding robot reaches the target position, the pose of the steel bar binding robot is adjusted based on the pose information. Therefore, by means of the method, the steel bar binding robot can autonomously move, adjust the posture and quickly reach the working position to work, manual operation is not needed, and the working efficiency and quality are improved. The problem that in the prior art, the operation efficiency of a steel bar binding robot is low is solved.

The present disclosure belongs to the technical field of arch bridge structures, and particularly relates to a steel-concrete combined skewback structure and a construction method thereof. In the present disclosure, by arranging arch rib tubes, concrete sections in a main chord pipe, concrete blocks in a skewback, fixing steel tubes, a transverse diaphragm unit, and a vertical diaphragm unit, the steel-concrete combined skewback structure can achieve the following objectives that 1. the skewback structure can be fully connected with a bearing platform; and 2. the fixing steel tubes are fully filled with concrete. In addition, the present disclosure further provides the construction method of the above steel-concrete combined skewback structure. The construction method the skewback structure itself and its mounting manner both have sufficient structural stability.

The invention discloses an intelligent bridge shock isolation device with a replaceable sensor and an installation method.The device comprises a connecting module, the connecting module comprises a support bottom connecting plate (7) and a sliding module arranged at the top of the support bottom connecting plate (7), and the sliding module comprises an upper friction plate (1), a lower friction plate (4) and an arc-shaped sliding block (3); the data measurement module comprises a sensing force holding layer (5) arranged at the bottom of the lower friction plate (4), the sensing force holding layer (5) is provided with a sensor module (8), and the replacement module comprises a sensor assembly layer (6), an internal wedge block (9) and an external wedge block (10). A sliding friction pair is jointly formed by the connecting module and the sliding module, so that the good damping performance of the support is achieved, meanwhile, the stress state of a bridge is monitored in real time through the data measuring module, intelligent monitoring and jacking installation and rapid replacement of the sensor module are achieved, and the problem that a traditional bridge support cannot be rapidly and safely replaced is solved.

The invention discloses an urban large-section ultra-shallow-buried underground excavation tunnel approaching rapid construction method. The method comprises the following steps that S1, construction preparation is conducted; s2, an advanced large pipe shed is constructed; s3, reinforcing and grouting the bridge pile; s4, when the distance L between the tunnel face and the bridge pile in the longitudinal direction of the tunnel is larger than 3 m, the soil body around the tunnel is reinforced through full-section curtain grouting, otherwise, the soil body around the tunnel is reinforced through ground surface grouting, and compensation grouting in the tunnel is conducted according to the excavation condition of the tunnel; s5, tunnel excavation; during tunnel excavation, the tunnel is divided into a left pilot tunnel, a middle pilot tunnel and a right pilot tunnel, and meanwhile, the pilot tunnels are further divided into multiple steps for cyclic excavation; primary supporting and temporary supporting are conducted immediately after excavation of all the pilot tunnels is completed; and when the deformation displacement degree of the tunnel is gradually reduced, the temporary support is removed, an inverted arch is constructed, and the secondary lining is tightly followed. Therefore, under various auxiliary construction methods for tunnel construction, the self-stabilization capability of the soil covering stratum of the tunnel can be effectively improved, and the construction safety and the construction efficiency are improved.

An anchorage system for the horizontal rotation of a cable, and a construction method. The anchorage system comprises an anchorage structure, transfer cable saddles, a main cable saddle and diverting cable saddles, wherein a cable rotation channel is provided in the anchorage structure; and the main cable saddle is arranged at the central axis of the top of the cable rotation channel, and the diverting cable saddles are fixedly arranged at the top of the cable rotation channel and are symmetrically distributed along the main cable saddle. The main cable saddle comprises a first main cable saddle and a second main cable saddle, the first main cable saddle and the second main cable saddle being axially connected by means of a force transmission mechanism; each diverting cable saddle comprises a cable saddle body; and a cable comprises a first cable and a second cable, wherein the first main cable saddle is used for inverted-U-shaped rotation of the first cable at the top of the cable rotation channel, and the second main cable saddle and the diverting cable saddles are used for M-shaped rotation of the second cable at the top of the cable rotation channel. By means of these configurations, stress at the central axis of the top of the anchorage structure can be dispersed to two sides of the top of the anchorage structure, thus avoiding stress concentration of the anchorage structure.

The invention relates to the technical field of civil engineering structure plate deformation joint connection, and discloses a civil engineering structure plate deformation joint connecting device and a using method thereof.The civil engineering structure plate deformation joint connecting device comprises at least two adjacent concrete plates, and a deformation joint is arranged between the concrete plates; the elastic rubber belt is arranged in the deformation joint, and the elastic rubber belt is arranged in the length direction of the deformation joint and used for connecting the adjacent concrete slabs and providing telescopic connection to adapt to thermal expansion and cold contraction or other deformation of the concrete slabs; the supporting structures are located on the two sides of the elastic rubber belt, and each supporting structure comprises a first supporting plate and a second supporting plate. The elastic rubber belts are arranged in the length direction of the deformation joint, flexible connection can be provided between the concrete slabs, thermal expansion and cold contraction or other displacement deformation of the concrete slabs caused by temperature changes and foundation settlement are effectively absorbed through the design, and therefore the situation that the concrete slabs crack or are unstable in structure is avoided.

The invention discloses a pushing support structure spanning a high-speed large-span steel box girder and a construction method, and relates to the technical field of steel box girder construction. Comprising an assembling support and a pushing support, and the assembling support and the pushing support are arranged at the bottom of a steel box girder; the assembling support comprises a concrete independent foundation, a temporary support is installed on the concrete independent foundation, and a profile steel distribution beam is installed on the top of the temporary support. The pushing support comprises a concrete enlarged foundation, multiple sets of stand columns are installed on the concrete enlarged foundation, and transverse distribution beams are installed at the tops of the stand columns. A longitudinal pushing platform is mounted at the top of the transverse distribution beam, and a walking type pushing piece is fixedly mounted on the longitudinal pushing platform; a plurality of groups of steel box girders are arranged, and at least six steel box girders are spliced in each group; the steel box girders are distributed in an arc shape; a guide beam is installed in the advancing direction of the steel box beam. According to the steel box girder pushing support structure system, highway passing is not affected, and the steel box girder pushing support structure system is economical, firm and stable.

The present invention discloses a double-annular strong magnetic array nonlinear dynamic vibration absorber and design method for suspension vibration reduction, which belongs to the field of structural vibration control. The installation position and quantity are designed according to the vibration reduction requirements, and one is usually installed at the midpoint of the suspension. The vibration absorber comprises inner and outer magnetic ring arrays, counterweights, universal wheels and a base. It feeds back the control force in the opposite direction of the suspension vibration during movement, so that the suspension vibration energy is transferred to the vibration absorber and then less returned to the suspension, and the energy is dissipated through friction between the universal wheel and the base, the installation of air dampers and other measures. It introduces nonlinear stiffness, so that the optimal parameter domain range is expanded from the line domain to the surface domain, and thus has the outstanding advantages of easy parameter tuning and high vibration reduction robustness, and is easy to install, durable, and requires no or less maintenance. It is applicable to single, double and four-cable suspensions, and is expected to achieve the goal of good vibration reduction effect throughout the life cycle of the suspension, which has positive significance for ensuring driving and bridge safety and extending the service life of the suspension.

The present invention provides a piece-by-piece assembled variable-section box girder structure and a construction method. Each box girder segment box girder includes a top plate unit, two web plate units and a bottom plate unit. A plurality of web vertical ribs are embedded in the web plate unit. A threaded sleeve is connected to each web vertical rib at both ends. Vertical rib holes are provided in the top plate unit and the bottom plate unit. Vertical ribs are inserted into the top plate and bottom plate vertical rib holes and are respectively screwed to the threaded sleeves at both ends of the web vertical ribs. When the box girder is hoisted for construction, the plate units of each segment are hoisted separately and connected to form a segment as a whole through the vertical ribs. The present invention can reduce the use of large equipment and reduce the difficulty and cost of prefabrication construction.

The invention discloses a bridge pier column detection device, and belongs to the technical field of bridge detection, the bridge pier column detection device comprises a frame provided with a plurality of groups of square tubes, and further comprises an advancing mechanism comprising a first air cylinder arranged on the square tubes, and the square tubes are connected with a crawler driving vehicle through a plurality of groups of rotating shafts; the crawler driving vehicle is provided with a first motor in transmission connection with driving wheels of the crawler driving vehicle, and the side wall of the square pipe is slidably connected with an adjusting block. The output end of the first air cylinder stretches out and draws back to control the adjusting block to move, so that pressure and friction force between the track driving vehicle and the pier column are controlled, it is guaranteed that the track driving vehicle provides stable climbing driving force, and the frame is driven to climb on the outer side wall of the pier column for detection; the area, about to reach, of the surface of the pier column is pre-cleaned through the pulling force of the connecting rod on the arc-shaped roller, the detection precision is improved, automatic climbing detection work of the bridge pier column is achieved, the manual detection cost is effectively reduced, and the detection safety is improved.

The invention discloses a torsion bar elastic constraint spherical steel support which comprises a longitudinal spherical steel support, the longitudinal spherical steel support comprises a fixed support bottom plate located at the bottom, a support bottom basin is arranged on the support bottom plate in a sliding mode, a torsion bar assembly for constraint and limitation is arranged on the support bottom plate, and the longitudinal spherical steel support comprises a longitudinal spherical steel support body. The torsion bar assemblies are arranged on the two opposite side faces of the support bottom basin. Horizontal movement of the pin shaft end of the torsion arm is restrained through the side plate slide way, rigid rotation of the torsion arm during movement of the support is achieved, and the torsion arm rotates to drive the torsion rod spring to twist; a connecting rod assembly is removed, so that the structure is more compact; and the direction of the external force is parallel to the axis of the fixing bolt, the bolt stress is optimized, and the bridge support is more suitable for the application scene of the bridge support.

The invention discloses a UHPC joint formwork manufacturing device and method, a joint formwork and a pouring method, and relates to the field of bridge structure constructions.The UHPC joint formwork manufacturing device comprises a fiber fixing plate; the base molds are arranged at the bottom of the fiber fixing plate at intervals, a plurality of through holes for steel fibers to penetrate through are formed in the fiber fixing plate, and openings for liquid materials to be poured are formed in the tops of the base molds so that the current posture of the steel fibers can be fixed after the liquid materials are solidified. According to the obtained UHPC joint template, when UHPC joint pouring is carried out, steel fibers can be very accurately distributed in a first pouring UHPC and a second pouring UHPC in a half-and-half mode, a time-consuming and labor-consuming scabbling process is not needed, and continuity of the steel fibers at the multi-time pouring position of a UHPC structure is rapidly achieved.

The invention provides a steel box structure, a steel box girder, a movable modular steel box girder bridge and a manufacturing method, and relates to the technical field of bridge steel boxes, the steel box structure comprises a steel box, the steel box girder formed by combining the steel box structure and the movable modular steel box girder bridge comprising the steel box girder, the steel box is of a closed box body structure formed by welding a top plate, a bottom plate, webs, transverse partition plates and reinforcing transverse ribs, U-shaped longitudinal stiffening ribs and I-shaped longitudinal stiffening ribs are welded to the top plate and the bottom plate in the longitudinal direction respectively, the transverse partition plates and the reinforcing transverse ribs are arranged in the box body at certain intervals in the longitudinal direction of the bridge, a plurality of splice plates are arranged on the outer sides of the webs, and the splice plates are connected with the U-shaped longitudinal stiffening ribs and the I-shaped longitudinal stiffening ribs. And the two transversely adjacent steel box girder sections are connected through the connecting plates by adopting high-strength bolts. The structure system is simple and reliable, has high bearing capacity and high mounting and moving speed, and solves the problems that strip mine passing vehicles are large in load, the bridge arrangement position needs to be adjusted frequently, and a traditional structure is high in investment.

The support comprises an upper seat plate, a spherical crown lining plate, a middle steel lining plate and a lower seat plate, the upper seat plate is fixedly installed at the bottom of a beam bottom, the spherical crown lining plate is arranged between the upper seat plate and the middle steel lining plate, the middle steel lining plate is arranged between the spherical crown lining plate and the lower seat plate, and the spherical crown lining plate is fixedly installed on the lower seat plate. The lower seat plate is fixedly mounted at the top of a bridge pier, the bottom surface of the upper seat plate is fixedly connected with a first limiting ring through a first anti-shear pin, the first limiting ring abuts against the middle steel lining plate, the top surface of the lower seat plate is fixedly connected with a second limiting ring through a second anti-shear pin, and the second limiting ring abuts against the middle steel lining plate. In a normal use state, the slip surface adopts a large curvature radius and a small friction coefficient to provide smaller damping, reduce the acting force of the support on a bridge and reduce the lifting of a beam end, and in an earthquake state, the slip surface adopts a small curvature radius and a large friction coefficient to provide larger damping, so that the shock absorption and isolation effect of the support is improved; and displacement of the bridge under the earthquake condition is controlled.