国内外规范关于塑性铰长度计算比较  

Calculation Comparison of Plastic Hinge Length on Design of Bridge in Domestic and Overseas Codes

作　　者：解伟[1] 李天超[1] 贾明晓[1] 

机构地区：[1]华北水利水电大学,河南郑州450045

出　　处：《华北水利水电学院学报》2013年第6期85-87,共3页North China Institute of Water Conservancy and Hydroelectric Power

基　　金：郑州市科技领军人才项目(112PLJRC354);河南省教育厅科学技术研究重点项目(13B560120);华北水利水电大学高层次人才引进资助项目(40154)

摘　　要：近20年地震灾害的发生,使得桥梁抗震越来越受到重视.目前,大多数国家的桥梁抗震设计规范已经采纳了延性抗震理论.给出了国内外桥梁抗震设计规范提出的延性抗震设计中的塑性铰长度的计算方法.以连续梁桥为例,分析了各国规范关于塑性铰长度的规定对桥墩抗震性能评价的影响,明确了塑性铰长度的取值对桥墩地震反应分析和抗震性能评价的影响.Seismic design has received an increasing attention due to earthquake damages in the past 20 years. Currently, the bridge seismic design codes of most countries have adopted the ductility seismic theory. In this paper,the calculation methods of plastic hinge length on ductility seismic design of bridge in domestic and overseas criteria are compared. Taking continuous girder bridges for exam- ple, the effects of provisions about the plastic hinge length on pier seismic performance are analyzed. Further, the effects of the plastic hinge length value on pier seismic response analysis and seismic performance evaluation are cleared.

关 键 词：延性设计 塑性铰长度 延性指标 连续梁桥 规范 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]