555 results about "Continuous beam" patented technology

The invention relates to the technical field of bridge bearing capacity evaluation, and discloses an existing continuous beam bridge bearing capacity comprehensive evaluation method which comprises the steps that multi-source data are collected to construct a three-dimensional damage voxel field, and an initial finite element model is generated; simulating a heavy load identification control section, and designing an equivalent static load test scheme according to an equivalent internal force principle; executing a field static load test, collecting elastic response data and constructing an actual measurement response vector; calculating errors and iteratively adjusting parameters in a voxel field constraint range to finish model correction; and generating an operation space-time security envelope based on the correction model, and comparing the state in real time to output a control instruction. A three-dimensional damage voxel field is constructed, voxels are used as a normalized data carrier, discrete apparent and internal damage data such as three-dimensional laser scanning point cloud, ultrasonic velocity and rebound strength are mapped into a continuously distributed space field, and the space variability of the rigidity of an existing bridge material can be represented in a refined mode. And the accuracy of describing the physical current situation of the structure by the initial finite element model is improved.

Additively manufactured articles of footwear comprising a sole portion and an upper portion 3D printed as a single piece. In some embodiments, the article of footwear can comprise an outer skin comprising a plurality of continuous beams extending adjacent to each other and defining at least part of an outer contour of the upper portion, at least part of an outer contour of the sole portion, or both. In some embodiments, the article of footwear can comprise an inner skin comprising a network of beams defining at least part of an inner contour of the upper portion. In some embodiments, the article of footwear can comprise a core structure that connects beams of the outer skin to beams of the inner skin.

The invention discloses a large transport vehicle bridge safety assessment method based on fuzzy comprehensive evaluation, which comprises the following steps: constructing a bridge bearing capacity reduction coefficient model, integrating four factors of material performance degradation, structural damage, environmental corrosion and load combination, and determining index weights by adopting an analytic hierarchy process; and a multi-stage evaluation system is established in combination with a fuzzy mathematics theory. A prestressed concrete continuous beam bridge in Jiangsu section of Jinghai highway is taken as an object, finite element simulation is used for analyzing the load effect of large vehicles under independent and mixed passing conditions, and verification shows that when the large vehicles pass at the mixing rate of 20%, the most unfavorable section safety coefficient of the bridge reaches 1.35, and the standard requirements are met. According to the method, fuzzy mathematics and structural mechanics analysis are creatively fused, a standardized process of parameter collection, model calculation and safety judgment is established, the efficiency is improved by 40% or above compared with a traditional static load test, the method is applied to transportation examination and approval of five bridges in Jiangsu province, a scientific basis is provided for selection of large transportation channels, and the risk of bridge damage is effectively prevented.

Additively manufactured articles of footwear comprising a sole portion and an upper portion 3D printed as a single piece. In some embodiments, the article of footwear can comprise an outer skin comprising a plurality of continuous beams extending adjacent to each other and defining at least part of an outer contour of the upper portion, at least part of an outer contour of the sole portion, or both. In some embodiments, the article of footwear can comprise an inner skin comprising a network of beams defining at least part of an inner contour of the upper portion. In some embodiments, the article of footwear can comprise a core structure that connects beams of the outer skin to beams of the inner skin.

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.

Methods, systems, and devices for wireless communications are described. A network entity may generate a set of beamforming weights for a lens antenna associated with the network entity. Further, the network entity may generate the set of beamforming weights based on a convergence location corresponding to a target coverage area of a cell supported by the network entity. The convergence location may be based on the target coverage area and on one or more parameters of the lens antenna. As such, the network entity may transmit, via a set of antenna elements of the lens antenna, a signal to a user equipment (UE) in accordance with the set of beamforming weights for the lens antenna such that the signal may be spatially distributed within the target coverage area of the cell.

The invention provides a hanging basket steel plate sling limiting device, and relates to the technical field of continuous beam cantilever casting auxiliary tools, the hanging basket steel plate sling limiting device comprises a steel plate sling, a clamping plate, a working pin and a limiting assembly; the limiting assembly comprises a placing plate, a supporting plate and fixing plates, the supporting plate is arranged at the lower end of the placing plate, fixing assemblies for connecting the supporting plate and the clamping plates are arranged in the supporting plate, the two fixing plates are symmetrically arranged, connecting pipes are connected to the outer sides of the fixing plates, and the ends, away from the fixing plates, of the connecting pipes are connected with moving plates which are connected with fixing rods; an inner rod is elastically arranged in the fixing rod, one end of the inner rod extends out of the fixing rod and is fixedly provided with a limiting plate, through holes for the limiting plate to penetrate through are correspondingly formed in the clamping plate and the fixing plate, and a control assembly for controlling the connecting pipe to move in the direction perpendicular to the fixing plate is arranged on the fixing plate. The invention solves the problems that the sling is not positioned in the middle of a working pin, so that the distribution of load on the sling is influenced, the deflection of a hanging system is further caused, and local overload or uneven stress is caused.

The invention relates to the technical field of beam bridge splicing, in particular to a large-span concrete continuous beam bridge splicing construction method based on intelligent construction. The method comprises the following steps: acquiring digital modeling data of a left bridge and a right bridge to be spliced; analyzing the digital modeling data, and determining the dynamic stress distribution of the whole construction process; acquiring deformation monitoring data in real time, analyzing the deformation monitoring data, and determining a coordinated deformation rule of the left and right bridges; and generating a splicing construction scheme according to the dynamic stress distribution and the coordinated deformation rule. And the decoupling problem of a digital model and a physical entity is eliminated. The problem of stress control blind areas is solved, stress space-time evolution is quantified, it is ensured that stress prediction covers all stages of construction, and the blind areas of a conventional static model are avoided. The problem of quantitative deficiency of the coordination deformation rule is solved, and the defect of neglecting the deformation coordination is avoided. The problem of construction decision lag is solved, the structural damage probability and temperature cracks are reduced, and coupling of construction execution and a physical mechanism is ensured.

The invention discloses a rigid frame continuous beam bridge construction monitoring method based on digital twinning. The rigid frame continuous beam bridge construction monitoring method comprises the steps that S1, a construction simulation model of a continuous beam bridge is established; s2, establishing a construction site three-dimensional environment model; s3, fusing the three-dimensional environment model and the construction simulation model to obtain a construction dynamic virtual model; s4, establishing a continuous beam bridge construction structure analysis and calculation model; s5, training the continuous beam bridge construction structure analysis and calculation model by using the construction structure information obtained in real time to obtain a prediction model; s6, acquiring three-dimensional point cloud data of the continuous beam bridge in real time, and establishing a three-dimensional point cloud model; s7, fusing the prediction model, the three-dimensional point cloud model and the construction dynamic virtual model to obtain a continuous beam bridge digital twinborn model; and S8, according to the digital twin model of the continuous beam bridge, checking construction monitoring data in real time, and realizing construction monitoring operation of the continuous beam bridge. According to the rigid frame continuous beam bridge construction monitoring method based on digital twinning, the construction quality can be improved, and the construction safety is guaranteed.

The invention discloses a simple layout method for distributed optical fiber deflection monitoring of a continuous beam bridge cluster, and the method comprises the steps: laying upper and lower edge strain sensing optical cables on a boundary beam of the continuous beam bridge cluster, only laying the lower edge strain sensing optical cable on a middle beam, and obtaining the deflection of the boundary beam through the upper and lower edge strain monitoring data of the boundary beam; and reconstructing the upper edge strain data of the middle beam by utilizing the upper edge strain data of the boundary beam, and realizing the accurate reconstruction of the deflection of the middle beam by combining the lower edge strain monitoring data of the middle beam through a continuous beam bridge deflection reconstruction method based on data-physical hybrid driving. The method not only solves the problems of large sensor consumption, complex arrangement, high construction cost, poor cluster monitoring economy and the like caused by simultaneous arrangement of optical fibers on the upper edge and the lower edge of each beam in the prior art, but also solves the problems of difficulty in arrangement of sensors and large construction damage caused by bridge deck pavement coverage on the upper edge of the middle beam; and the robustness and the data reconstruction capability of the monitoring system are effectively improved.

According to the rapid rope threading construction method for dismantling the continuous beam, the steel wire rope penetrates through the top opening in the top plate, the edge opening in the flange plate and the side opening in the side web plate and then is connected to the hook of the floating crane, the steel wire rope can be prevented from moving relative to the cut section during hoisting, and the construction safety is improved; meanwhile, according to the hole forming mode, the length of the needed large-diameter steel wire rope is small, the weight of the large-diameter steel wire rope is light, the advantage that the floating crane has multiple lifting points is combined, and a crane does not need to be matched for rope penetrating in the construction process, so that on the premise that extra large mechanical equipment such as the crane is not adopted, rapid hole forming and installation of the 54 mm large-diameter lifting steel wire rope are completed, and the construction efficiency is improved. Finally, the purposes of improving the dismantling efficiency of each section of the continuous beam and reducing the construction cost are achieved.

The invention relates to the technical field of power cables, and discloses a cable trench cover plate internal force and deflection optimization calculation method, which comprises the following steps of: firstly, acquiring uniformly distributed load, material attribute, span, geometric dimension and boundary conditions of a cable trench cover plate; based on the data, an equilibrium differential equation of the elastic continuous beam is established, and deflection functions of a simple support and a fixed end are solved. Thirdly, constructing a finite element model, and analyzing stress changes under different spans by utilizing the model in combination with the two deflection functions to form an internal force balance model; through the model and the function, the relationship among the load, the control point deflection and the beam internal force is determined, and an internal force function is obtained. And finally, according to the finite element model, reversely deducing a standard section inertia moment, and analyzing the influence of the standard section inertia moment on the internal force and deflection to obtain section optimization parameters. According to the method, the problems of high calculation difficulty and inaccurate calculation result of a cover plate with unknown section parameters in actual engineering of the cable trench are solved.

The invention discloses a bridge longitudinal and transverse displacement reconstruction method and system based on time sequence feature extraction, and relates to the technical field of bridge health monitoring. The method comprises the following steps: acquiring structural state data and environmental data of a continuous beam bridge and a cable-stayed bridge; analyzing a linear relation between the structure state data and the environment data by using a correlation coefficient analysis method; processing the related characteristics by using the bridge displacement reconstruction model to obtain three-dimensional displacement data of bridge reconstruction; and based on the obtained three-dimensional displacement data of the bridge reconstruction, screening key factors in related characteristics through a grid search algorithm, and optimizing the input of a bridge displacement reconstruction model. According to the method, the time sequence characteristics of the data are fully monitored to construct the De-SpcNet-based bridge displacement reconstruction model, so that the reconstruction precision of longitudinal and transverse displacement is improved. And then, model output is optimized through refined model parameter setting and a post-processing technology, so that the accuracy and stability of a reconstruction result are further improved.

The invention relates to a steel-concrete combined section design method based on top plate deflection constraint, which comprises the following steps that a top plate of a steel-concrete combined section is equivalent to a continuous beam supported on an elastic fulcrum, and the elastic fulcrum comprises a stiffening rib or an anchor pipe positioned below the top plate; the maximum deflection w of the equivalent continuous beam caused by the first wheel load under the elastic supporting condition is determined; the rigidity k of the stiffening rib or the anchor pipe serving as the elastic fulcrum is solved; and determining a top plate deflection constraint inequality, and simultaneously solving the top plate deflection constraint inequality and a calculation formula of the maximum deflection w of the continuous beam so as to determine different types of stiffening ribs or anchor pipes, sizes of the stiffening ribs or anchor pipes and / or distances in the transverse bridge direction. The invention provides a steel-concrete combined section design method based on top plate deflection constraint. A stiffening rib or an anchor pipe which not only meets the requirement of a prestressed steel beam anchoring space but also has enough rigidity support for a top plate can be quickly determined.

The invention relates to the technical field of bridge construction, and provides a construction method for building continuous beams in parallel and a construction hanging basket. The construction hanging basket comprises a hanging basket body, a first hanging rod used for bearing the construction load of the hanging basket body is poured on the hanging basket body through concrete, and extension sections are bolted to the two ends of the hanging basket body; the extension section is provided with a second hanging rod used for guiding the hanging basket to move and temporarily supporting the extension section, through interval construction of the parallel-built continuous beams and by combining the avoiding design of the extension section, the problem of interference of small-interval parallel-built continuous beam hanging basket construction is solved, and the construction efficiency is effectively improved.

The invention relates to a stress monitoring data correction system for a continuous beam bridge under the temperature influence, in particular to the field of bridge health monitoring, and effectively solves the problem of bridge stress monitoring data distortion under the temperature influence through multi-module collaborative innovation. The trend modeling module dynamically predicts a drift evolution law and quantifies a confidence level, the compensation correction module fuses physical constraints to generate an anti-interference drift compensation amount, and the health prediction module realizes accurate life evaluation based on a time-varying mechanism, so that finally, the reliability of monitoring data is remarkably improved, and misjudgment of a structural damage state is avoided; maintenance decisions are optimized, full-life-cycle safety of the bridge is guaranteed, and meanwhile invalid operation and maintenance cost caused by false alarms is reduced.

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 invention discloses a beam transportation control system, and belongs to the technical field of nuclear medicine radiotherapy. The control system comprises an energy adjusting system and a beam transport system. The energy adjusting system is composed of a magnet system, an energy reducer system, a beam measuring system, a vacuum system and a water cooling system. The beam conveying system is composed of a magnet system, a beam measuring system, a vacuum system and a water cooling system. The control system of the energy selection section and the control system of the beam section are connected in series to form the whole beam transport control system. According to the system, through compact beam optical design, the number of magnets is greatly reduced, meanwhile, high-quality continuous beams are guaranteed, beam parameters can be accurately controlled, the transmission efficiency and quality are kept, the beam transportation cost is saved, and meanwhile energy consumption is reduced.

The invention relates to a shear key arrangement device and method for improving the crack resistance of a bridge deck in a hogging moment area of a steel-concrete combined continuous beam bridge, and belongs to the technical field of bridge engineering. Comprising a steel beam, a concrete bridge deck slab and stud shear keys arranged between the steel beam and the concrete bridge deck slab, and the rigidity of the shear keys can be adjusted according to needs so as to improve the stress performance of a concrete slab in a hogging moment area. According to the shear connectivity requirement, the total shear bearing capacity of the studs is calculated, the number of the studs is calculated according to the diameter of the selected stud type, the tensile stress of the concrete in the hogging moment area is calculated and compared with the designed allowable stress, and rigidity adjustment of the shear keys is achieved by changing the diameter and the number of the studs. And meanwhile, the total strength of the stud is kept unchanged. According to the scheme, the stress performance of the concrete slab in the hogging moment area of the steel-concrete combined continuous beam bridge can be effectively improved, meanwhile, the construction process is simplified, the safety is improved, the cost is reduced, the material performance is fully utilized, and the user experience is improved.

The invention discloses a method for rapidly evaluating the flexural rigidity of a bridge under vehicle-induced excitation, and belongs to the technical field of flexural rigidity evaluation of variable cross-section beams. The method comprises the following steps of: firstly, acquiring a bridge time-history response by adopting vehicle movement loading, separating a power component by utilizing a VMD method, then identifying a main frequency of an IMF component through FFT, removing the power component higher than a bridge fundamental frequency, and reconstructing a bridge actual measurement quasi-static time-history response; then, an axle effect in bridge actual measurement quasi-static time history response is eliminated, an influence line recognition model is established, and Tikhonov regularization is introduced to further solve a deflection influence line; then deriving an analytic solution of a deflection influence line of the variable cross-section continuous beam based on a virtual work principle, establishing a mathematical relationship between the flexural rigidity and the deflection influence line, and identifying the flexural rigidity of the bridge through the deflection influence line based on the mathematical relationship to obtain flexural rigidity distribution of the full bridge; finally, multiple evaluation indexes are defined and calculated, the bending rigidity distribution of the full bridge is comprehensively evaluated, and the method has the advantages of being good in engineering applicability and high in safety evaluation innovativeness.

The invention relates to the technical field of bridge jacking construction, in particular to a large-area special-shaped continuous beam asynchronous jacking system and a jacking construction method. According to the method, jacking force is pre-distributed based on a finite element model and a historical data training machine learning algorithm, and high-precision deformation coordination control is achieved through a hydraulic jack group and a multi-sensor cooperative monitoring network (including displacement, strain, inclination angle and deflection parameters) placed on a special-shaped beam in combination with an iteratively optimized graded jacking and dynamic compensation strategy. Comprising the steps that the total jacking height is constructed in a graded mode, and in each stage of jacking, output of all fulcrums is adjusted in real time through a PLC so that the displacement synchronization error can be kept to be smaller than or equal to 0.5 mm; when it is monitored that local stress exceeds the limit, a dynamic compensation mechanism is triggered, and secondary balance of the load is achieved by jacking and accelerating an overstress point and jacking adjacent fulcrums in a reinforcement mode. According to the method, the problems of stress concentration, local support disengaging and the like caused by uneven stress in the jacking process of the special-shaped continuous beam are solved.

The invention discloses an adjustable continuous beam cantilever construction monitoring system. The system comprises the following steps: S1, collecting data in a construction process; s2, performing decoding, filtering and digital processing to generate an original monitoring data set; s3, performing error correction and optimization on the original monitoring data set based on a Kalman filtering algorithm to obtain an optimized monitoring data set; s4, analyzing and optimizing the monitoring data set by adopting a support vector machine algorithm, and generating a construction adjustment instruction; s5, performing time sequence analysis and pattern recognition on the optimized monitoring data set, and detecting potential construction risks; and S6, receiving a construction adjustment instruction and a construction early warning signal, and dynamically adjusting the working parameters of the construction equipment. The system has the advantages of being high in data processing precision, high in real-time performance and high in construction safety.

The invention relates to the technical field of construction supports, and discloses a bridge high pier continuous beam construction support. A continuous beam; the supporting mechanism is arranged on the bridge pier, the supporting mechanism is used for providing stable supporting, and the supporting mechanism comprises a base supporting plate; and the positioning mechanism is arranged on the base supporting plate. According to the bridge high pier continuous beam construction support, the righting mechanism is arranged, hydraulic oil is driven by the telescopic motor to push the top supporting plate and the four top pressing columns to synchronously act on the bottom and the side wall of a continuous beam, symmetrical and controllable multi-point positioning extrusion is formed, and the problem that the position of the continuous beam cannot be adjusted after hoisting through a traditional support is solved; even if the continuous beam is not completely aligned during first hoisting, accurate fine adjustment can be achieved through the support structure, the splicing precision is greatly improved, repeated hoisting is avoided, the construction efficiency is improved, and the safety risk is reduced.

The invention discloses a non-full-length beam steel bar material breaking optimization method based on a hybrid optimization algorithm, and aims to solve the problem that an existing non-full-length beam steel bar material breaking method cannot balance the steel bar utilization rate and the calculation efficiency. The method comprises the following steps: for required beam steel bars under the same beam steel bar diameter, dividing the required beam steel bars into two groups according to the length of the beam steel bars; for required beam steel bars with the length larger than 12 m, a cut excess material splicing method is adopted, an optimized mathematical model of steel bar excess materials is established, and the number of used raw material steel bars and the division length of the raw material steel bars are calculated and determined through a genetic algorithm; and for required beam steel bars with the length smaller than 12 m, directly cutting from a single raw material steel bar or combining and processing the raw material steel bars with different specifications, listing all cutting modes, calculating steel bar excess materials corresponding to the cutting modes, and minimizing the total steel bar excess materials by the integer linear programming model to obtain a steel bar broken material combination scheme.

The invention discloses a corrugated steel web box girder hogging moment area shear nail push-out test device and method.The corrugated steel web box girder hogging moment area shear nail push-out test device comprises a corrugated steel web combined box girder, a loading frame, a pulley support, a jack and a displacement measuring device, and a reinforced concrete plate of the corrugated steel web combined box girder is connected with a corrugated steel web through shear nails; the cross beam of the loading frame applies symmetrical vertical pressure to the reinforced concrete slab through the jack, the stand column applies horizontal push-out force to the lower sliding support through the jack, the reinforced concrete slab is pushed out of the top face of the steel box girder, and a shearing force sliding curve is recorded through the displacement measuring device and the pressure sensor. Through a two-way loading mode of first vertical and then horizontal, the shear bearing capacity of the shear nail under the actual cracking condition of a hogging moment region concrete slab is more effectively simulated, a test device for only applying one-way force to the shear nail is improved, the real stress condition of the continuous beam bridge hogging moment region is met, and the displacement measurement device is simple in structure, stable in clamping and high in practicability. The relative slippage of the shear nails is effectively measured.

The invention discloses a geometric irregularity state deterioration characterization method for a longitudinally-connected ballastless track on a high-speed railway bridge under a transverse earthquake, and the method comprises the steps: building a refined finite element model of a longitudinally-connected ballastless track-bridge system, and analyzing the damage characteristics and distribution rules of key components of the earthquake-caused track-bridge system; the characteristic of damage state degradation of key components of the earthquake-induced track-bridge system and a mapping mechanism are disclosed; then, based on the second theorem of Castlliano and the superposition principle, a geometric irregularity state deterioration characterization model of the longitudinally-connected ballastless track on the high-speed railway bridge under the action of the transverse earthquake is constructed, the geometric irregularity state of the longitudinally-connected ballastless track on the simply-supported / continuous beam bridge is mapped based on the deterioration characterization model, deformation data of the steel rail under the action of the earthquake are accurately quantified, and the accuracy of the deformation of the steel rail under the action of the transverse earthquake is improved. The method provides a theoretical basis for quickly judging the post-earthquake traffic capacity and maintenance engineering of a track-bridge system, ensures the operation safety of a high-speed railway, provides a theoretical basis for the design of a high-speed railway track-bridge, is beneficial to post-earthquake track repair and train operation recovery, and has a good practical value and a good popularization prospect.

The invention relates to the technical field of bridge health monitoring, and discloses a stay cable damage identification method of influence line cubic spline interpolation micro separation difference, comprising the following steps: S1, constructing an elastic support continuous beam model considering shear deformation and rotational inertia, and establishing a mapping relationship between support stiffness matrix difference before and after damage and cable force influence line change, calculating the cable force influence lines before and after damage, and making a difference to obtain a cable force influence line difference curve; s2, cubic spline interpolation differential is carried out on the cable force influence line difference curve; and S3, sequentially carrying out smoothing processing and mean variance separation calculation on the curvature curve. By constructing an elastic support continuous beam model integrated with shear deformation and rotational inertia and cooperating with a force normal equation of full-bridge support interaction, a cable force influence line difference curve can be accurately calculated, compared with a traditional model, the curve is more accurate, a solid data foundation is laid for damage identification, the identification accuracy is remarkably improved, and it is ensured that damage diagnosis is more reliable.

The invention belongs to the technical field of process control, and discloses a high-speed rail large-span continuous beam linear whole-process control method. Comprising the following steps: collecting continuous beam structure parameter data in real time and cleaning the data to obtain continuous beam construction data; elevation fluctuation interference identification is carried out, and an elevation difference mutation area is output; performing leveling control based on the height difference abrupt change area to obtain leveling correction data; performing stress interference correction to obtain disturbance correction linear data; tensioning plan information is obtained in real time, tensioning offset correction is conducted on the tensioning plan information, and tensioning correction parameter data are generated; construction climate data are collected, tensioning control calibration is carried out on the tensioning correction parameter data, and calibration control stress data are output; zero offset compensation is executed, and monitoring data in the offset restoration process are output; constructing a control strategy based on the monitoring data of the offset repairing process, and sending the control strategy to a preset construction control terminal; and the stability and the data accuracy of linear control are improved.

The present invention discloses a method for calculating the negative bending moment impact coefficient of small and medium span prefabricated continuous beam bridges based on a quasi-design state, including the following processes: determining the second-order vertical bending frequency of the bridge; determining the bridge deck roughness grade; and calculating the negative bending moment impact coefficient under the unevenness grade of the bridge deck using the second-order vertical bending frequency of the bridge. Based on the quasi-design state of the bridge, the present invention calculates the impact coefficient using the measured second-order frequency and roughness data of the bridge; at the same time, it can also adjust the impact coefficient assessment standard in a timely manner according to the degree of deterioration of the road surface grade. Therefore, the present invention can realize the evaluation of the negative bending moment impact coefficient of the continuous beam bridge according to the bridge deck condition in different operation periods, and has stronger pertinence and wider applicability.

The invention relates to a bridge cantilever construction hanging basket and a construction method thereof, and belongs to the technical field of bridge construction equipment.The bridge cantilever construction hanging basket comprises a main truss piece, the main truss piece comprises a first connecting section used for installing a through hanging basket and a second connecting section detachably connected with the first connecting section, and when first blocks on the two sides of a bridge zero block are synchronously constructed, the second connecting section is detachably connected with the first connecting section; the first connecting sections are arranged in pairs and connected with each other, and when subsequent sections connected with the first bridge block are constructed, the first connecting sections and the second connecting sections are connected with each other. As the main truss piece adopts a spliced two-section truss structure, and the second connecting section at the tail part is detachably connected with the first connecting section, the main truss piece is convenient to disassemble and assemble, when a zero block of the continuous beam is short and two main truss pieces cannot be arranged at the same time for first block construction, the second connecting section at the tail part of the main truss piece can be disassembled, and the first connecting sections of the main truss pieces at the two ends are connected in a tail-to-tail manner; and the application range is wider, the construction efficiency can be improved, and popularization and application values are achieved.