Full-scale optimal calculation method for cable force of cable-stayed buckling arch bridge buckling cable

Through a full -scale optimization calculation method, combined with linear and geometric non -linear analysis, the status, cutting displacement and buckle section correction are performed to solve the simplified and inaccurate problems of the calculation of cable -hooking for force in existing technologies, and realize the realization of the calculation of cable force. The goal of the initial tension optimization of the buckle and the pine cable into the arched line.

CN119378186AActive Publication Date: 2025-01-28CHINA CONSTRUCTION SIXTH ENGINEERING DIVISION CO LTD
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Patent Information

Application Number
CN202411228087.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-03
Publication Date
2025-01-28
Estimated Expiration
2044-09-03

AI Technical Summary

Technical Problem

The existing method of calculating cable force calculation has limitations such as excessive simplification of the structure, inconsistent with the actual project, failure to consider the tangential assembly of the arch ribs and geometric nonlinearity, and complicated calculation process.

Method used

Adopt a full -scale optimization method of a cable buckle arched bridge buckle cable force. By establishing an arched model of a falling frame, a linear and geometric non -linear analysis, combined with status correction, cutting displacement correction, buckle section correction, geometric non -linear linearity Amendment and gradually optimizing the at the beginning of the deduction.

Benefits of technology

Under the premise of ensuring the deduction stress to meet the allowable stress of the material, the buckle is tensor once, so that the pine cable arched lines that are considering the influence of the assembly and geometric non -linearity meet the target requirements, simplify the calculation process and improve the calculation. accuracy.

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Abstract

The invention relates to a cable-stayed buckling arch bridge cable-stayed cable force full-scale optimization calculation method, which comprises the following specific steps of: establishing a primary falling frame arching model, calculating bare arch deformation under the action of dead weight as a tangential displacement target # imgabs0 # assumed one group of cable-stayed sections {A} 0 in a cable-loose arching state, establishing a space finite element model in an arch rib construction stage, inputting any initial cable force value {T} 0, and calculating the cable-stayed buckling arch bridge cable-stayed cable force value {T} 0 in a cable-stayed buckling arch bridge cable-stayed buckling arch bridge cable-stayed buckling arch bridge cable-stayed buckling arch bridge cable-stayed buckling arch bridge. Performing linear analysis to obtain cantilever state rigidity displacement {s} 0, loose cable state rigidity displacement {us} 0 and loose cable state tangential displacement {ut} 0; the initial target value of the rigidity displacement in the loose state is set to be # imgabs1 # for state correction; carrying out tangential displacement correction; the section of the buckle cable is corrected; geometric nonlinear correction is carried out; and extracting the initial tension {T} 0 of the buckle cable.
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Citation Information

Patent Citations

  • Determination method of initial completion initial cable force of cable-stayed bridge

    CN101937485A

  • Large-span arch bridge arch ring line shape control method and optimization calculation model

    CN111709175A

  • Method for calculating cable hanging force of cable-stayed buckle of arch bridge

    CN116611289A

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    CN116796395A

  • Method for calculating cable-stayed hanging and buckling cable force and pre-lifting amount of arch rib of large-span steel arch bridge

    CN117332656A

Cited By

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