10153results about "Bridge erection/assembly" patented technology

The invention discloses an AI-based bridge construction intelligent monitoring method, particularly relates to the field of data analysis, and comprises the steps of multi-modal sensing network construction, cross-domain characteristic parameter extraction, comprehensive state evaluation modeling and intelligent decision and regulation. According to the method, deformation, corrosion, vibration and other multi-physical field data are synchronously collected through a multi-modal sensing network, a cross-scale feature extraction algorithm is adopted to construct creep-corrosion collaborative factors and other composite indexes, the limitation of traditional single-dimensional parameter analysis is broken through, a dynamic evaluation model is fused with weighted integral and a nonlinear function, and the dynamic evaluation accuracy is improved. Precise early warning of risks such as bridge pier instability and cantilever cracking is achieved, the multi-field coupling effect quantification capacity is remarkably improved, an intelligent joint control mechanism automatically triggers instructions such as jacking reinforcement and damping tuning through a three-level emergency response system, a monitoring-analysis-regulation closed-loop system is constructed, the hysteresis of manual decision is effectively eliminated, and the safety and reliability of the system are improved. And all-weather self-adaptive safety guarantee is provided for bridge construction.

The invention discloses a continuous rigid frame bridge construction monitoring method which comprises the following steps: before cantilever casting construction, arranging linear monitoring points along the longitudinal axis direction of a bridge according to the spacing of 8-12 meters, and respectively arranging stress monitoring points on a top plate and a bottom plate of the root section of each section; synchronously acquiring three-dimensional coordinate data of the linear monitoring points and real-time strain data of the stress monitoring points in the process of pouring each section in a cantilever manner; the collected linear data and stress data are input into a finite element model for collaborative analysis, and when a linear deviation value exceeds + / -5% of a designed pre-camber value and the deviation between a stress measured value and a theoretical calculation value exceeds + / -8%, an adjustment instruction is automatically generated; according to the adjusting instruction, the elevation of the front fulcrum of the hanging basket is adjusted through the hydraulic jack during construction of the next section; after initial setting of the adjusted segment concrete, linear data and stress data are collected, and the actually measured data and a finite element model prediction value are compared and verified. The method can help to guarantee the safety and durability of the continuous rigid frame bridge.

The present disclosure is directed to a load positioning system, a partially-assembled bridge, and a process of assembling a bridge. The load positioning system includes a gantry extending over a structure of a partially-assembled bridge, the partially-assembled bridge at least partially extending over a physical feature, a load descent mechanism arranged and disposed to lower a load having a mass of at least 10 kg onto the structure, and a load location mechanism arranged and disposed to move the load from being laterally-proximal to a first location of the structure and laterally-distal to a second location of the structure to being laterally-distal from the first location of the structure and laterally-proximal to the second location of the structure. The load descent mechanism and the load location mechanism are physically supported by the gantry. The process of assembling a bridge includes using the load descent mechanism.

The invention belongs to the technical field of bridge installation and monitoring, and particularly discloses a cable-stayed bridge girder rapid installation monitoring analysis method based on an AI technology. The method comprises the following steps: S1, acquiring displacement, stress and environmental load data of a current installation segment and an adjacent installed segment in real time through a distributed sensor network, and constructing a global installation data set; s2, performing space-time alignment processing on the data set, extracting a joint feature vector representing a single-point instantaneous state and an inter-segment accumulated deviation, and dynamically calculating an attitude prediction tolerance and an accumulated error trend tolerance under a current working condition based on an environmental load; s3, inputting the joint feature vector into a pre-trained time sequence prediction model, and outputting an attitude prediction result and an accumulative error trend evaluation result of a future key time point; and S4, error grading decision making is carried out. According to the method, bridge installation is converted from passive monitoring to active prediction control, and the installation precision, efficiency and safety are effectively improved.

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.

According to the pier-side supporting leg moving and transporting method based on cooperative work of the moving trolley and the transporting trolley, connection of a pier-side supporting leg at the position of a bridge pier on the rear side is relieved, a jacking oil cylinder of a hooking mechanism on the upper portion of the moving trolley contracts, the pier-side supporting leg is lifted, then the transporting trolley is moved to the outer side of the pier-side supporting leg, and the pier-side supporting leg is moved to the rear side of the transporting trolley. A transverse moving driving mechanism of the shifting trolley drives the pier-side supporting leg to transversely move outwards, so that a top flange of the pier-side supporting leg is inserted into a bottom hooking mechanism of the conveying trolley, and the conveying trolley rotates the pier-side supporting leg by 90 degrees to enable the pier-side supporting leg to be longitudinally arranged; then the conveying trolley walks to the position of the next pier on the front side, the pier-side supporting legs are transversely arranged, and the top flanges of the pier-side supporting legs are connected with a hooking mechanism on the lower portion of the shifting trolley in a hooking mode; and then, a transverse moving driving mechanism of the shifting trolley drives the pier-side supporting leg to transversely move inwards to a designated position along the lower hooking mechanism, so that moving of the pier-side supporting leg is completed.

The invention provides a maglev traffic track structure and a construction method thereof. The maglev traffic track structure comprises a bridge deck, a maglev track assembly and an induction plate assembly. The magnetic levitation rail assembly comprises a magnetic levitation rail, a hexagon nut, a gasket, a thin nut and a screw. The induction plate assembly comprises an iron core, an aluminum plate, shear nails and screws. The iron core is vertically welded and fixedly connected with the shear nails, the shear nails and the bridge deck are cast and anchored into a whole, the iron core is arranged on the upper end face of the bridge deck, and the aluminum plate is installed on the upper end face of the iron core through screws; the construction method comprises the steps that the prefabricated bridge deck slab is modularly poured in a factory, the magnetic levitation rail is installed, adjusted and locked in the factory, the levelness and straightness of the magnetic levitation rail are measured again, and the bridge deck slab is installed on a construction site. According to the invention, high-precision, high-efficiency and low-cost installation of the maglev traffic track is realized.

The invention discloses a bridge fabrication machine construction full-period informatization management system based on an AI technology, and the system comprises a bridge fabrication machine global sensing subsystem which is used for collecting construction parameters in the construction operation process of a bridge fabrication machine; the edge processing subsystem is used for performing edge processing on the construction parameters acquired by the bridge fabrication machine global sensing subsystem; the digital twinning subsystem is used for establishing a digital twinning model for simulating the whole construction period of the bridge fabrication machine and synchronously mapping the construction parameters subjected to edge processing to the digital twinning model; and the safety monitoring subsystem is used for monitoring the working safety of the bridge fabrication machine based on the digital twin model. The method is used for solving the problems that in the prior art, the monitoring and analysis capacity of the construction process of the cantilever bridge fabrication machine is poor, and operation safety is not facilitated, and the purposes of informatization management of the construction process of the bridge fabrication machine and improvement of the safety and scientificity of the construction process of a continuous beam are achieved.

The invention discloses a construction method and a construction system for bridge joist pier replacement, and relates to the technical field of bridge construction.The construction method comprises the following steps that gate-type pier studs are arranged on the two sides of a to-be-replaced pier, two steel cover beams are arranged on the corresponding gate-type pier studs in the longitudinal direction of a bridge, and a sliding structure is arranged on the two steel cover beams; temporary supporting pieces are arranged on the two steel cover beams, and the bridge superstructure is supported through the temporary supporting pieces; a pier cap of the to-be-replaced pier is cut off, the pier cap is moved out through a sliding structure, and the steel coupling beam is moved to the position where the original pier cap is located through the sliding structure; and supporting the upper structure of the bridge by using the steel coupling beam, and removing the temporary supporting piece to complete pier replacement. According to the construction method, in the joist pier replacement process, the connection stability is high, the construction method is simple, and the construction efficiency and safety are ensured.

The invention relates to the technical field of parameter optimization, and discloses a steel-concrete composite beam bridge prefabricated segment prestress tension parameter optimization method and system, and the method comprises the steps: obtaining a design BIM model, classifying prefabricated segments, constructing an initial digital twinborn model, and obtaining monitoring data; processing the monitoring data to obtain corrected data; comparing the corrected data with a model simulation result, and calibrating the model to generate a precise digital twinborn model; evaluating a multi-dimensional robustness index to construct a feature vector; generating a self-adaptive tensioning strategy sequence through a graph neural network in combination with the feature vector and the precise model; according to the method, intelligent optimization of the tensioning parameters is achieved, and the construction precision and the structural safety of the steel-concrete composite beam bridge are remarkably improved.

The invention discloses a high-pier large-span extra-large bridge suspended pouring beam hanging basket construction method, and belongs to the field of bridge engineering construction.The method comprises the following steps that hanging basket rails are installed, the precision is controlled, and a hanging basket comprising a double-channel-steel main truss, a manganese steel sling, an arc-shaped flow guide plate and a honeycomb formwork is assembled; grading pre-pressing is carried out according to the specified multiple of the design load, and the pre-camber of the template is corrected by adopting a BP neural network to ensure that the finished bridge linear error meets the requirement; a mechanical-hydraulic-electrical integrated intelligent control system is deployed, and the traveling speed and synchronism of the hanging basket are controlled through double-oil-cylinder driving, a 5G digital twin platform and an edge computing technology, so that rapid alarm is realized when the load is abnormal; segmental circulation construction is carried out, and when the environment wind speed reaches a set value, a hydraulic rail clamping device is automatically locked; a model is established by using ANSYS software, and simulation verification is performed on multiple types of key working conditions to ensure that the safety coefficient of the structure meets the specification requirement. The construction precision and safety are guaranteed, and the method adapts to complex environments.

The invention discloses a movable formwork construction monitoring method and system based on finite element simulation, and relates to the field of bridge construction monitoring and structure health monitoring. The problems that in traditional movable formwork construction monitoring, a model is fixed, early warning lags behind, and it is difficult to dynamically reflect the real state of a structure are solved. According to the method, a digital structure module containing adjustable parameters is established, and working condition simulation is carried out to identify a theoretical high-risk area and optimize sensor layout; performing pre-simulation before each process to output a predicted value, synchronously acquiring actual measurement data during construction, and calculating a standardized deviation sequence; dynamic safety evaluation and early warning are carried out based on time domain feature extraction and multi-index fusion; reverse calibration and online updating are carried out on model parameters through Bayesian variational inference by utilizing historical deviation data, so that closed loop of simulation, monitoring, early warning and model optimization is realized, and the safety monitoring precision and real-time performance in the construction process of the movable formwork are remarkably improved.

The invention discloses a cast-in-place concrete beam construction method based on deformation control, and relates to the field of cast-in-place beam construction. S2, foundation treatment; s3, a support is erected and pre-pressed; s4, a formwork is installed; s5, steel bars and prestressed pipelines are installed; s6, concrete construction; and S7, removing the bracket. BIM modeling and an intelligent monitoring system are combined, the foundation treatment range is expanded, an automatic drainage system is arranged, edge settlement and rainwater soaking are effectively avoided, a support system is selected according to needs, anti-sidesway design is strengthened, stress is accurately simulated through graded automatic loading and pre-pressing, reliable deformation data are ensured through double monitoring, pre-camber calculation is scientific, errors are reduced, and the construction efficiency is improved. Formwork, reinforcing steel bars and prestressed pipelines are installed in a standard mode, the structural quality is guaranteed, concrete construction pays attention to temperature control and maintenance, crack reduction and support dismantling are symmetrically carried out in a grading mode, the springback amount is monitored in real time, and construction safety is guaranteed.

The invention relates to the field of bridge construction, and discloses a hexagonal-section large-cut-angle and dip-angle combined tower steel-concrete combined section construction method which comprises the following steps: arranging a strain sensor group and a laser calibration target spot on the outer wall of a steel shell, establishing a pose parameter mapping model through multi-source data fusion, and resolving the six-degree-of-freedom pose of the steel shell in real time; constructing a load matrix based on the strain data, and solving a target stress value of the support rod by adopting a maximum flow-minimum cut algorithm; by adjusting the telescopic amount of the telescopic supporting rod in stages and combining servo motor driving and a closed-loop feedback correction mechanism, balanced distribution of supporting force is achieved; the weight coefficient of the multi-objective optimization algorithm is dynamically adjusted, and the pose precision and the structure safety requirement are balanced; and finally, after the pose convergence and stress balance conditions are met, the driving device is dismantled, and the supporting rod body is reserved to serve as a permanent reinforcing structure. The technical problem that in a traditional method, the steel shell pose precision and the stress balance of a supporting system are difficult to consider at the same time is solved.

The invention provides an overall one-time total splicing manufacturing process for a large section of an ultra-wide three-box separation type steel box girder. The overall one-time total splicing manufacturing process comprises the steps that a cross beam is positioned; the bottom plate of the middle box and the first inclined bottom plate units of the two side boxes are positioned; a side box second inclined bottom plate and a side box web unit are assembled; assembling and welding the diaphragm plate units; assembling and welding the tuyere box units; positioning, assembling and welding the first top plate unit; and other top plate units are assembled and welded. The steel box girder is integrally manufactured at a time, that is, steel box girder sections are linearly arranged on the top faces of the supporting plates of the total splicing jig frame in the longitudinal and transverse directions, and the plate units are closely attached to the steel box girder sections at a time to achieve longitudinal and transverse linear arrangement of the steel box girder. And meanwhile, steel box girder assembly and pre-assembly are completed on the same jig frame at a time, the time needed for temporary storage and reshipment of girder sections is greatly shortened, the occupied temporary storage site in a factory is reduced, the occupied amount of an overall assembly site is also reduced, meanwhile, secondary linear accurate positioning does not exist, the traditional overall assembly process of the steel box girders is met, and the quality and precision of the steel box girders are guaranteed.

The invention relates to the field of intelligent transportation systems, discloses an intelligent highway maintenance system and method, and aims to solve the fundamental defects that in the prior art, the data acquisition dimension is single, the maintenance decision depends on artificial experience, and prospective prediction is lacked. The method comprises the following steps: acquiring multi-modal dynamic sensing data covering a whole road domain; constructing and updating a four-dimensional space-time digital twinborn model in real time; driving the causal graph neural network model to perform structure health state prediction and diagnosis; generating an active maintenance instruction through a multi-objective optimization engine; and the autonomous maintenance execution unit is dispatched to complete unmanned closed-loop operation. According to the method and the system, fundamental transformation of road maintenance from passive response to active prevention, from artificial experience to intelligent decision making and from discrete operation to closed-loop automation is realized, and the maintenance efficiency, the safety and the health level of the whole life cycle of the road are remarkably improved.

The present invention relates to a satellite monitoring method for detecting structural anomalies of a bridge by means of permanent scatterers of a first (IA) and a second (ID) satellite radar images time series, corresponding to opposite ascending and descending satellite orbital geometries along an axis of a satellite reference system. The method comprises a step A of selecting a common subset of permanent scatterers (PSP), a step B of temporal alignment of the time series, a step C of linear interpolation of the time series, a step D of defining a local mobile reference system M-LCRS of the bridge, a step E of projecting the time series in an END reference system, a step F of projecting the time series in the M-LCRS system, a step G of spatial averaging among the permanent scatterers of the common subset of the time series, a step H of processing according to a trendseasonal decomposition STL-LOESS method, and a step I of comparing with predefined thresholds for detecting structural anomalies.

The invention relates to an intelligent permeation grouting process and device for concrete crack self-repairing. The intelligent permeation grouting process and device are suitable for crack detection and repairing of a newly-built concrete structure. The device comprises a blood vessel network embedded into concrete, a crack detection sensor, a control module, a pumping module and a self-repairing material storage module, and automatic detection and repairing of cracks are achieved. The technological process comprises crack detection, data analysis, grouting parameter determination, material injection and repair monitoring. Through the automation and intelligence technology, the repairing efficiency and precision are remarkably improved, and the device is suitable for large structures such as bridges and tunnels.

The invention provides a detection device based on overall lateral rotation of main and auxiliary double-limb arch ribs and a use method of the detection device, and belongs to the technical field of arch rib construction detection, a transverse movement detection frame module is connected with a tower frame module through a telescopic fixed net frame module, and the upper portion of the transverse movement detection frame module is slidably connected with a double-limb arch rib module. Movement of the control device is automatically adjusted through the first positioner, the operation procedure of in-place installation is facilitated, and whether the rotating hinge base at the direct stress position deforms or not is analyzed and judged by analyzing information of the distance between the rotating hinge base and the arch support and information of the distance between the rotating hinge base and the tensioning base in the side rotating process so that the state of the double-limb arch rib module can be judged; according to the method, the two ends of the arch foot rotating seat shaft serve as rotating shafts, the arch rib assembled in the flat state is laterally rotated to the mounting position, compared with a traditional beam-first-arch-second hoisting method, only fewer temporary facilities are needed for lateral rotation to maintain an arch rib mounting system, and mounting construction of an arch rib structure can be completed more efficiently at low cost.

The multi-component non-landing construction bridging system comprises at least two main beams, the main beams are supported at the tops of box beams, cover beams or pier bodies through legs, supporting cross beams are arranged between the legs and the pier bodies, and the supporting cross beams stretch across the tops of the multiple pier bodies; at least one crown block is arranged at the top of the main beam, and the crown block is provided with a hoisting trolley capable of moving transversely and used for hoisting and installing a cover beam and a box beam. The bent cap is divided into two pieces in the longitudinal direction, the two pieces of bent cap are hoisted respectively, and the two pieces of bent cap are fixedly connected with each other when located at the top of the pier body. By the adoption of the structure, under the constraint that the legs do not fall to the ground, hoisting construction of the bent cap and the small box girder can be completed, and the device is suitable for the construction working conditions of three-dimensional overlapped elevated frames and spanning existing roads. And through optimization of the construction process, hoisting construction of the cover beam and the small box beam can be achieved within the range of the main beam only exceeding the length of two spans. By means of the scheme that the bent cap is installed in a split mode, the weight of the bent cap of the large-width bridge is greatly reduced.

The invention provides a front guide cross beam of a bridge girder erection machine. The front guide cross beam is provided with an upper guide rail and a lower cross beam from top to bottom; a plurality of supporting bases are arranged on the lower cross beam, and the supporting bases walk along the lower cross beam so as to correspond to piers in position; grooves are formed in the two sides of the upper guide rail, the transverse moving walking wheel set of the second supporting leg is provided with beam moving driving wheels which are opposite in pairs, and the beam moving driving wheels are located in the grooves. The distance between a walking wheel of the transverse moving walking wheel set and the beam moving driving wheel is set as follows: when a second supporting leg of the bridge girder erection machine is lowered to the upper guide rail for supporting, the walking wheel is in contact with the top surface of the upper guide rail, the beam moving driving wheel is not in contact with the groove, and the walking wheel transversely walks along the upper guide rail; when the second supporting leg is lifted, the wheel face of the walking wheel is separated from the top face of the upper guide rail, the beam moving driving wheel makes contact with a groove of the upper guide rail, and the beam moving driving wheel drives the front guide cross beam to move transversely. The front guide cross beam can move towards other bridge piers along with the second supporting leg; and the distance change between the piers can be adapted.

The construction platform comprises two moving tables symmetrically arranged on the two sides of the cylindrical pier, the two moving tables are made to be away from or close to each other through a translation driving mechanism, a supporting beam assembly shares loads of the moving tables, and a lifting driving mechanism drives the moving tables to ascend and descend synchronously. When the jacking mechanism is in place, the bottom of the supporting beam assembly is jacked to complete supporting system conversion, and the structure of each assembly and the construction method steps are described in detail. The technical effects that repeated self-lifting construction can be achieved, an avoiding space can be provided for moving of the moving table, supporting system conversion is effectively achieved, the construction efficiency and convenience are improved, and construction of the straining beam and the capping beam in the cylindrical pier is completed are achieved.

The utility model discloses an anti-scouring device for a river bridge pier, which relates to the technical field of bridge engineering and comprises a bottom support hoop, a first arc-shaped protective cover, a first mounting plate and a second arc-shaped protective cover, and one end of the top of the bottom support hoop is fixedly connected with the first arc-shaped protective cover. First mounting plates are fixedly connected to the two ends of the top and the two ends of the bottom of the first arc-shaped protection cover correspondingly, a second arc-shaped protection cover is slidably connected to the other end of the top of the bottom supporting hoop, and second mounting plates are fixedly connected to the two ends of the top and the two ends of the bottom of the second arc-shaped protection cover correspondingly. According to the bottom supporting hoop, the first arc-shaped protection cover, the first mounting plate and the second arc-shaped protection cover, the bridge pier is protected on the basis of buffering water flow, and therefore the problem that an existing river channel bridge pier anti-scouring device cannot buffer the water flow, and the anti-scouring effect is poor is solved.

The invention relates to the technical field of bridge engineering, in particular to an in-service steel bridge U rib and top plate crack double-face welding repairing method and application thereof. The method comprises the steps that the position of a crack is determined, a bridge deck pavement layer above the crack is removed, and the surface of a bridge deck slab in a crack area is cleaned; flattening the bridge deck slab on the two sides of the crack, and fixing the flattened bridge deck slab; u-rib internal welding construction process holes are formed; u rib inner welding reinforcing welding and weld leg increasing welding are carried out in an inner corner area where the U rib with the cracks is connected with the top plate; sealing and repairing the construction process hole; carrying out carbon arc air gouging on the crack above the bridge deck slab, and forming a gouging groove in the bridge deck slab; and polishing and multi-layer and multi-pass welding are carried out on the planed groove. The method is fused with an internal welding technology, is a comprehensive repair scheme with root treatment, double reinforcement, controllable deformation and reliable quality, thoroughly overcomes the technical defects of treatment of symptoms, no treatment of root causes, easy secondary damage, poor reliability and the like in the prior art, and remarkably prolongs the service life and the safety performance of the in-service steel bridge.

The invention relates to the technical field of beam feeding of special-shaped beams, in particular to an F-beam feeding method which comprises the following steps that S1, a heightening joint is additionally arranged below each reverse supporting assembly of a middle supporting leg, and a lengthened main truss is installed on a main beam; s2, a block C is conveyed forwards, and after the front end of the block C penetrates through a rear supporting leg, a front hoisting trolley is controlled to be aligned with the hoisting point position of the front end of the block C; s3, the front crane carriage lifts the front end of the C block, and the distance between the highest position of the shoe-shaped gold ingot cross beam and the bottom face of the C block is larger than or equal to 10 cm; s4, the front hoisting trolley and the rear beam transporting trolley move forwards together, and the height from the highest position of the shoe-shaped gold ingot cross beam to the bottom face of the block C is kept to be larger than or equal to 10 cm all the time; s5, the rear hoisting trolley hoists the rear end of the block C until the block C is horizontal; and S6, the front hoisting trolley and the rear hoisting trolley jointly hoist the beam to move forwards to complete beam feeding. According to the beam feeding method, the risk that the C block collides with the shoe-shaped gold ingot cross beam is reduced.

The application belongs to the technical field of bridge construction, and provides a cable tower automatic deviation rectification method in a bridge construction process. In the bridge construction process, the deformation of the cable tower is detected in real time, and the extension and contraction states of the buckling cables on both sides of the cable tower are adjusted in real time according to the deformation, so that the deformation value of the cable tower is always within a preset deformation range, the perpendicularity of the cable tower and the force balance on both sides of the cable tower in the bridge construction process are ensured, and the problem of construction risk caused by the deviation of the cable tower is solved. Meanwhile, in the process of adjusting the extension and contraction of the buckling cables on both sides of the cable tower, the force conditions of all the buckling cables are detected and controlled in real time, so that the forces of all the buckling cables are within the corresponding preset force range, the problem of large deviation between the actual force and the design force of the buckling cables is avoided, and the problem of premature failure of the buckling cables in the later bridge use process is solved. The whole adjustment process is integrated into the bridge construction process, the construction period is reduced, and the construction progress is ensured.

The invention provides a temporary supporting structure for mounting a girder of a small side box combined hybrid girder cable-stayed bridge and a using method, and belongs to the technical field of bridge construction. Comprising a lower bearing plate, upper bearing plates are arranged on the left side and the right side of the upper portion of the lower bearing plate, tightening hanging rods are arranged on the left side and the right side of the lower end of each upper bearing plate, a sliding seat is arranged at the upper end of each upper bearing plate, a jacking module is arranged in each sliding seat, a connecting plate is arranged above each jacking module, and a longitudinal supporting module is arranged at the lower end of each connecting plate. By means of the transverse hydraulic self-locking rod, when a beam body generates transverse displacement when encountering wind loads, partial displacement can be automatically released, and automatic resetting can be achieved after the displacement acting force value is reduced, and by means of the front-back double-section type contraction transverse support formed by the butt joint rod and the conical rod and in cooperation with the transverse buffering spring, the transverse buffering effect can be achieved. Vibration energy generated in the working process of construction machinery can be absorbed, the influence of construction vibration on the temporary supporting structure is reduced, and the safety of the temporary supporting structure is improved.

The invention belongs to the technical field of bridge construction, and particularly relates to a single-point multiple-jack synchronous beam falling forced displacement method prestress applying method which comprises the steps that S1, a plurality of temporary supporting points are arranged beside a permanent support, and a self-locking type beam bearing mechanism is installed on each temporary supporting point; meanwhile, a hydraulic jack is arranged at each temporary supporting point, the multiple hydraulic jacks are connected to a PLC integrated hydraulic synchronous control system through hydraulic pipelines, and synchronous linkage mechanisms are arranged among the multiple hydraulic jacks. According to the single-point multiple-jack synchronous beam falling forced displacement method prestress applying method, when an inner jacking pipe sleeve pushes a supporting cushion block to ascend and descend, through meshing of a self-locking gear and two self-locking racks, a secondary telescopic block can be forcibly driven to move synchronously, so that continuous stretching and retracting of a bearing beam are achieved, the cushion block does not need to be manually replaced after single beam falling, and the working efficiency is improved. The system automatically adjusts the height to meet the multi-stroke circulating beam falling requirement, and the construction efficiency is improved.

The invention relates to the technical field of steel-concrete composite beams, and discloses a steel-concrete composite beam bridge deck reinforcing device which comprises a sealing plate, a first hydraulic cylinder, a first supporting plate, a first polished shaft, a second supporting plate, a first support, a first rotating arm and a second hydraulic cylinder. In the using process, when one side of the top face of the web beam is subjected to overload pressure, the second supporting plate on the same side can be pressed downwards, then the first supporting plate on the same side is made to move downwards, and therefore the moving ends of the first hydraulic cylinders on the same side are made to return. And at the moment, hydraulic oil in the rodless cavities of the first hydraulic cylinders on the same side can enter the rodless cavities of the second hydraulic cylinders on the same side, and then the moving ends of the second hydraulic cylinders on the same side stretch out. And then, under the support of the first support on the same side, the first rotating arms on the same side can deflect towards the direction of the web beam. Due to the fact that hydraulic pressure is adopted as a power source, enough supporting force can be provided for the bottom face and the two side faces of the web beam, and then the anti-overturning performance is improved.

The invention discloses a super-large side span main cable erecting method, which belongs to the technical field of bridge construction, and comprises the following steps: arranging a temporary cable saddle support pad on a support tower, and arranging a temporary cable saddle body, a jacking bracket and a retainer; the main cable structure is pulled and limited to the temporary cable saddle and the retainer; the temporary cable saddle body is closed and locked to clamp the main cable structure, and cable tightening operation is conducted on the main cable structure; the connection between the temporary cable saddle body and the temporary cable saddle supporting cushion is removed, the midspan steel beam is hoisted to tighten and lift the main cable structure, meanwhile, the jacking bracket is operated to jack the main cable structure, the temporary cable saddle body is separated from the temporary cable saddle supporting cushion, and the lower half part of the temporary cable saddle body is removed; the closed locking state of the temporary cable saddle body is relieved, and the upper half portion of the temporary cable saddle body and the temporary cable saddle supporting cushion are removed; a permanent cable saddle lower half saddle body is arranged at the top of the supporting tower; and the main cable structure descends into the lower half saddle body of the permanent cable saddle and is limited, and the upper half saddle body of the permanent cable saddle is buckled to the lower half saddle body of the permanent cable saddle and is fixed.