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Abstract

In order to study the factors affecting the internal force of a four‑column bridge pier and cover beam and solve the problem of inconsistent weight load of left and right sides, Midas/Civil was used to establish a finite element model of the bar system. By comparing the internal force under different weight ratios of left and right sides, temperature, and uneven settlement, the influence of weight ratios of left and right sides, temperature, and uneven settlement on the internal force of a four‑column bridge pier and cover beam was analyzed. The results show that when the weight of the left side is unchanged, as the weight of the right side decreases, the weight ratio of the left and right sides increases. It has little influence on the internal force of the four‑column bridge pier and cover beam near the left side, and the internal force changes by about 10%. The internal force of the four‑column bridge pier and cover beam near the right side is greatly affected and changes by more than 30%. Under the overall temperature load, the internal force of the four-column bridge pier and cover beam changes symmetrically, about 10%. The non-uniform settlement will cause the cover beam to be strained at the lower part of the pier column settlement position and the upper part of the adjacent pier column without settlement position, resulting in a sharp change in the internal force of the four-column bridge pier and cover beam. When the uneven settlement is 5 mm, the positive bending moment at the center of the left side increases by 42%, while the internal force at the center of the right side is slightly affected. In practical engineering, it is necessary to pay close attention to the uneven settlement of bridge piers.

Publication Date

11-24-2023

DOI

10.14048/j.issn.1671-2579.2023.05.018

First Page

104

Last Page

108

Submission Date

March 2025

Reference

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