摘要
随着国内公路运营里程的不断增加,桥梁数量也随之增加,各种突发事件时常发生,这对桥梁的运营管养提出了更高的要求,尤其是对各种特殊复杂结构桥型的管养更是重中之重。文章针对某斜拉桥梁端伸缩缝装置产生异常高差的突发事件,为了查明事件产生的原因,分析其对桥梁整体结构的影响程度,对桥面高程、伸缩缝高差、主塔竖直度、全桥索力等进行检测分析,并对桥梁维修后进行再次检测,通过前后数据对比分析做出客观实际的判断,旨在为重新开放桥梁使用提供技术依据。
With the increasing operation mileage of domestic highways,the number of bridges is also increasing.Various unexpected incidents often occur,which puts forward higher requirements for the operation and management of bridges,especially for the management and maintenance of various bridges with special and complex structure.Aiming at the unexpected incident of abnormal height difference of the expansion joint device at the end of a cable-stayed bridge,in order to find out the cause of the incident and analyze its influence on the overall structure of the bridge,the bridge deck elevation,the expansion joint height difference,the main tower verticality,and the whole bridge's cable force are tested and analyzed,and the bridge is tested again after repair.Through the comparative analysis of the data before and after the repair,the objective and practical judgment is made,aiming to provide technical basis for the reopening of the bridge.
作者
徐金龙
XU Jinlong(Tongna Testing&Certification Group Co.,Ltd.,Shanghai 200331,China)
出处
《工程技术研究》
2024年第4期8-11,共4页
Engineering and Technological Research
关键词
斜拉桥
支座变形
主塔竖直度
索力
伸缩缝高差
cable-stayed bridge
support deformation
main tower verticality
cable force
expansion joint height difference
