连续梁桥规范支承长度设计方法比较评估

英文篇名：Comparison of Design Methods for the Required Seating Length of Continuous Bridges in Current Bridge Design Codes
中文刊名：厦门理工学院学报
英文刊名：Journal of Xiamen University of Technology
作者：周光伟 ; 李建中 ; 陈昌萍
英文作者：ZHOU Guang-wei1 ; LI Jian-zhong2 ; CHEN Chang-ping1(1.Faculty of Civil Engineering ; Xiamen University of Technology ; Xiamen 361024 ; China ; 2.College of Civil Engineering ; Tongji University ; Shanghai 200092 ; China)
中文关键词：连续梁桥 ; 抗震规范 ; 支承长度 ; 设计方法
英文关键词：continuous bridges ; seismic design code ; required seating length ; design method
出版日期：2011-03-25
机构：厦门理工学院土木工程与建筑系;同济大学土木工程学院;
年：2011
期：01
出版单位：厦门理工学院学报

摘要

基于美国、日本,欧洲和我国规范的支承长度设计方法,针对我国连续梁桥的特点建立评估模型,通过参数分析对各国规范的支承长度设计方法进行了比较.美国、日本和欧洲抗震规范对于支承长度的设计都给出了详细的设计方法,而中国抗震规范仅给出了针对简支梁的一个最小支承长度公式.参数分析结果表明,各国规范的支承长度远大于由非线性时程方法得到的最大墩梁相对位移.
The required seating length design method in current bridge design codes of different countries was introduced.Based on the key dynamic characteristics of continuous bridges,an analytical model is adopted.Then the design method was evaluated by a nonlinear time history analysis.The design method for required seating length in current bridge design codes of USA,Japan and Europe was specified in detail,whereas only the minimum required seating length formula for simple-supported bridge in the seismic code of China was given.Parametric study shows that the required seating length in the seismic design codes of different country were considerably greater than the relative displacement between the top of the pier and the girder calculated by nonlinear time history analysis.

引文

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