上跨铁路转体桥抗震方案比选  

Comparison and Selection of Anti-seismic Schemes for Over Cross Railway Rotatable Bridge

作　　者：杨瑞 栗飞 YANG Rui;LI Fei(Shanxi Provincial Highway Bureau Jincheng Branch,Jincheng,Shanxi 048000,China)

机构地区：[1]山西省公路局晋城分局,山西晋城048000

出　　处：《黑龙江交通科技》2024年第6期79-83,共5页Communications Science and Technology Heilongjiang

摘　　要：以运城市槐东路上跨南同蒲铁路转体桥为例,就T构方案和连续梁方案在E2地震水准下进行分析对比。结论为:(1)减隔震方案主墩受力大大减小;(2)常规配筋情况下,T构方案E2下抗震能力不足,减隔震方案满足要求;(3)减隔震方案桥梁主墩抗震安全性相对T构方案提高30倍以上。最终该工程选用减隔震方案,为相关工程案例的抗震方案设计提供了一种参考。Taking the example of the rotatable bridge crossing South Datong-Puzhou Railway of Huaidong Road in Yuncheng City,this paper analyzes and compares the T-structure scheme and the continuous beam scheme under the E2 earthquake level.The conclusion is:(1)The seismic isolation scheme significantly reduces the stress on the main pier;(2)Under conventional reinforcement conditions,the seismic capacity of T-structure scheme E2 is insufficient,and the seismic isolation scheme meets the requirements;(3)The seismic safety of the bridge main pier is mare than 30 times higher than that of the T-structure scheme.The final selection of seismic isolation scheme for this project provides a reference for the seismic design of relevant engineering cases.

关 键 词：转体桥梁 方案比选 抗震 有限元分析 减隔震 

分 类 号：U442[建筑科学—桥梁与隧道工程]