地震作用下铁路简支梁桥桥墩配筋率与频率的关系  

The Relationship Between Reinforcement Ratio and Frequency of the Pier of Railway Simple Supported Girder Bridges under Earthquake Action

作　　者：王月钱[1] 张波[1] 占文峰[1] 牛学超[1] 郎博[1] 邱亚辉[1] 

机构地区：[1]北京工业职业技术学院建筑与测绘工程学院,北京100042

出　　处：《北京工业职业技术学院学报》2016年第1期8-12,共5页Journal of Beijing Polytechnic College

基　　金：北京市教育委员会科技创新平台资助项目(PXM2014-014225-000020)

摘　　要：基于大型有限元分析程序SAP2000计算出模型的自振特性和墩底地震响应,按照规范规定的配筋计算方法,采用偏心受压构件计算公式计算得到墩底截面的配筋率,对桥墩配筋率与频率的关系进行分析研究,得出不同设防地震烈度和不同场地类型条件下桥墩配筋率随着频率的变化规律,可为同类桥梁的桥墩配筋设计提供有价值的参考。Based on large finite element analysis program SAP2000,the model＇s natural vibration characteristics and the pier bottom seismic response are calculated. In accordance with the calculation method of reinforcement specified in the code,the reinforcement ratio of the bottom section of the pier is calculated by using the calculation formula of eccentric compression member. The relationship between reinforcement ratio and frequency is analyzed and the change law of the ratio of reinforcement of bridge pier with different earthquake intensity and different site types is obtained which can provide valuable reference for the design of the same kind of bridge pier.

关 键 词：铁路简支梁桥 配筋率 反应谱 桥梁抗震 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]