Suspension bridge inhaul cable force finding analysis method

Abstract

The invention relates to a suspension bridge inhaul cable force finding analysis method. The suspension bridge inhaul cable force finding analysis method is a suspension bridge inhaul cable force finding analysis method based on a target tracking-iterative updating algorithm. According to the method, under the condition that the geometric configuration and boundary conditions of the suspension bridge are known and the cable force in a finished bridge state is unknown, the mid-span deflection of a suspension bridge in a finished bridge state is used as a target value, an ANSYS parameterized programming language is used, and a force finding analysis method of a mid-span deflection-iterative update real constant array is tracked to solve the inhaul cable force meeting the structural design requirement of the suspension bridge. The suspension bridge inhaul cable force finding analysis method has the advantages that the suspension bridge inhaul cable force finding analysis method is simple,rapid, small in iteration frequency, short in solving time, low in requirement for computer configuration, high in solving precision and capable of meeting the requirements for academic research andengineering application to a certain extent, and is an effective method for determining the cable force of the suspension bridge in the bridging state.

Description

technical field [0001] The invention belongs to the field of bridge and culvert engineering in the transportation industry, and in particular relates to a force-finding analysis method for a suspension bridge cable based on a target tracking-iterative update algorithm. Background technique [0002] The realization of large-span spanning of suspension bridges is mainly accomplished by prestressed cables. When designing a suspension bridge, it is necessary to analyze the static and dynamic performance of the suspension bridge to evaluate the rationality of the design scheme of the suspension bridge, and make modifications and adjustments as needed to meet the structural design requirements of the suspension bridge. Among them, the completion state analysis of the suspension bridge is the basis of other static and dynamic performance analysis. The key to the completion state analysis is to solve the prestress of the cables, that is, to carry out the force-finding analysis of th...

AI Technical Summary

Problems solved by technology

[0004] The main cable of the suspension bridge is different from the straight cable. Its geometric shape is catenary, and it bears the action of tension and shear force at the same time. The distribution of prestress is more complex, and the existing force-finding analysis methods for cables cannot be directly applied to the analysis of the completed state of the suspension bridge and the evaluation of its static and dynamic performance.

At the same time, the existing force-finding analysis method of the cable is more complex in program design, requires a large number of iterative calculations, has high requirements for computer hardware, and consumes a lot of computer time.

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