| 连续梁桥规范支承长度设计方法比较评估 |
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| 引用本文： | 周光伟,李建中,陈昌萍.连续梁桥规范支承长度设计方法比较评估[J].厦门理工学院学报,2011,19(1):57-61. |
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| 作者姓名： | 周光伟 李建中 陈昌萍 |
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| 作者单位： | 1. 厦门理工学院土木工程与建筑系,福建厦门,361024
2. 同济大学土木工程学院,上海,200092 |
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| 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.
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| 关 键 词： | 连续梁桥 抗震规范 支承长度 设计方法 |
Comparison of Design Methods for the Required Seating Length of Continuous Bridges in Current Bridge Design Codes |
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| ZHOU Guang-wei,LI Jian-zhong,CHEN Chang-ping.Comparison of Design Methods for the Required Seating Length of Continuous Bridges in Current Bridge Design Codes[J].Journal of Xiamen University of Technology,2011,19(1):57-61. |
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| Authors: | ZHOU Guang-wei LI Jian-zhong CHEN Chang-ping |
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| Institution: | 1.Faculty of Civil Engineering,Xiamen University of Technology,Xiamen 361024,China; 2.College of Civil Engineering,Tongji University,Shanghai 200092,China) |
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| Abstract: | 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. |
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| Keywords: | continuous bridges seismic design code required seating length design method |
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