摘要
为给安装圆形板式橡胶支座的连续梁桥抗震设计提供依据,本文以某座预应力混凝土连续梁桥工程为实例,探讨了圆形板式橡胶支座高度对连续梁桥抗震性能的影响。通过Midas软件构建有限元模型,使用非线性时程分析方法对该桥在采用不同高度圆形板式橡胶支座进行验算,计算出对应的支座最大剪力与支座剪切变形量。发现板式橡胶支座的高度是影响桥梁支座最大剪力与支座剪切变形量重要因素。在选用的几个板式橡胶支座不同高度中,支座高度越高,桥梁抗震能力越强。可为相关桥梁支座选择和抗震设计提供参考依据。
To provide a basis for the seismic design of continuous girder bridges equipped with circular plate rubber bearings,takingthe pre-stressed concrete continuous girder bridge project as an example,and the influence of the height of circular plate rubber bearings on the seismic performance of continuous girder bridges were explored.A finite element model was constructed using the Midas software,and the nonlinear time-history analysis method was employed to check the bridge with different heights of circular plate rubber bearings.The corresponding maximum shear force and safety factor of the bearing displacement of the bridge were calculated.It is found that the height of plate rubber bearing is an important factor affecting the maximum shear force and displacement safety factor of bridge bearing.In the selected heights of the circular plate rubber bearing,the higher the heights is,the stronger the seismic capacity of the bridge is.The results may provide valuable reference basis for the selection of bearing types and seismic design calculations of similar bridges.
作者
任炫知
Ren Xuanzhi(Sichuan College of Architectural Technology,Deyang,China)
出处
《科学技术创新》
2025年第18期125-128,共4页
Scientific and Technological Innovation
基金
四川省科技计划重点研发项目《西南近断层地震区典型公路既有桥梁抗震性能提升技术及装备研发》(项目编号2024YFTX0037)
德阳市重点研发项目《活动断层区域地震动宽频化模拟及其关键参数研究》(项目编号2024SZZ189)。
关键词
桥梁工程
板式橡胶支座
支座选型
非线性时程分析
抗震设计
bridge engineering
plate rubber bearings
bearing type selection
nonlinear time-history analysis
seismic design
