摘要
通过对常山矮塔斜拉桥进行有限元结构分析,计算出该桥自振特性并进行分析研究;同时通过修改主梁、主塔及主墩的连接方式来模拟不同结构体系矮塔斜拉桥,并对三种不同结构体系矮塔斜拉桥的动力特性对比分析;对地震作用下内力最大的4号桥墩底截面,采用加州大学伯克利分校开发的UC-Fyber桥梁抗震屈曲分析专用软件对其屈曲承载力进行了验算。
A curved ramp continuous beam bridge in seismic region is selected as the research object, the space finite element analysis model of the bridge is established with Midas Civil finite element analysis software. Based on the relevant provisions in the ＂guidelines for seismic design of highway bridges＂ （JTG/T B02 - 01 - 2008） , the response spectrum method is used to analyze the vibration characteristics of the bridge, and the force of the bridge under E1 and E2 earthquakes is analyzed, then the stress of pier pile under E1 and E2 is compared. Finally the seismic performance of substructure of the bridge is checked.
出处
《内蒙古公路与运输》
2017年第2期29-33,共5页
Highways & Transportation in Inner Mongolia
关键词
大跨度
矮塔斜拉桥
动力特性
curve, ramp, continuous beam bridge, anti - seismic
