Installation Direction Design and Construction Control of Sliding Bearing of Continuous Girder Bridge

Authors

GUAN Changlu, Quality Supervision Branch Bureau of Traffic Construction , Jilin Provincial Transport Comprehensive Administration Law Enforcement Bureau , Changchun , Jilin 130021 , ChinaFollow
SUN Xiudong, Quality Supervision Branch Bureau of Traffic Construction , Jilin Provincial Transport Comprehensive Administration Law Enforcement Bureau , Changchun , Jilin 130021 , China
DONG Hao, Quality Supervision Branch Bureau of Traffic Construction , Jilin Provincial Transport Comprehensive Administration Law Enforcement Bureau , Changchun , Jilin 130021 , China
WANG Xingzhou, Quality Supervision Branch Bureau of Traffic Construction , Jilin Provincial Transport Comprehensive Administration Law Enforcement Bureau , Changchun , Jilin 130021 , China

Abstract

Continuous girder bridges can improve the structural stress,increase the structural bearing capacity,and promote ride comfort.However,some continuous girder bridges suffer from issues such as bearing dislocation,upper torsion,and damage to seismic arrestors.To identify deficiencies in current design and construction control,an in-depth analysis of these issues was conducted.The findings reveal the main reason is that the bidirectional sliding bearings (nearly half of the total ) fail to provide horizontal force,and the main sliding direction of the unidirectional sliding bearings is inconsistent with the deformation of the bridge superstructure.In this paper,factors including temperature-induced deformation,material shrinkage,elastic compression,creep,and construction process control of the bridge superstructure were taken into consideration.Control measures for the design and installation direction of continuous girder bridge bearings and new methods for the later installation or adjustment of lateral limit plates were proposed.The paper suggests that the main sliding direction of bearings shall be consistent with the line connecting the sliding and fixed bearings.This approach reduces the number of bidirectional sliding bearings while increasing unidirectional sliding bearings,providing greater horizontal constraints for the bridge superstructure,which allows for structural deformation accommodation and improves stress distribution and seismic performance.

Publication Date

2-22-2025

DOI

10.14048/j.issn.1671-2579.2025.01.015

First Page

129

Last Page

134

Submission Date

March 2025

Recommended Citation

Changlu, GUAN; Xiudong, SUN; Hao, DONG; and Xingzhou, WANG (2025) "Installation Direction Design and Construction Control of Sliding Bearing of Continuous Girder Bridge," Journal of China & Foreign Highway: Vol. 45: Iss. 1, Article 15.
DOI: 10.14048/j.issn.1671-2579.2025.01.015
Available at: https://zwgl1980.csust.edu.cn/journal/vol45/iss1/15

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