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Abstract

To study the actual bearing performance of a long link multi-span PC continuous wide box-girder bridge in a certain city, this paper conducted on-site static and dynamic tests on it. The static tests mainly tested the sedimentation of bridge pivots, deflection and strain of control sections. The dynamic tests included the modal test and sports car test, mainly testing the natural frequency of vibration, damping ratio, and coefficient of impact of the bridge. The comprehensive results of static and dynamic tests show that under the normal use state, the bearing capacity of the bridge meets the load level requirements of City A, with the dynamic working performance satisfying the requirements for utilization. Further efforts should be made to strengthen the research on the lower limit values of the normal range of deflection verification coefficients and strain verification coefficients. It is suggested that the range of normal working values for the bridge damping ratio should be provided.

Publication Date

1-18-2024

DOI

10.14048/j.issn.1671-2579.2023.06.026

First Page

165

Last Page

170

Submission Date

March 2025

Reference

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