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Abstract

To accurately evaluate the load-bearing capacity and working performance of cable-stayed bridges when they are completed, the Liku Nujiang Second Bridge [(81 +175) m cable-stayed bridge with single-tower single-cable plane hybrid beam] was taken as the object, and a simplified modeling method based on the linear domain element simulation of the steel box girder was proposed; the finite element model of the bridge was established. Through static load and dynamic load tests, the measured values of parameters such as stress, deflection (or displacement), cable force, impact coefficient, and frequency of the control section of the bridge structure were obtained. After comparative analysis, the load-bearing capacity and working performance of the bridge structure were evaluated. The results show that the proposed simplified modeling method has the advantages of high modeling efficiency, low error rate, and simple post-processing, and its calculation accuracy meets the requirements of the overall analysis of the bridge. The bridge structure has a certain safety reserve in terms of strength and rigidity, as well as good dynamic performance, and its load-bearing capacity and working performance meet the design requirements.

Publication Date

6-18-2022

DOI

10.14048/j.issn.1671-2579.2022.03.017

First Page

93

Last Page

98

Submission Date

May 2025

Reference

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