| 地震作用下的桥梁碰撞分析改进求解方法 |
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| 引用本文： | 刘鹏,郑凯锋,杨雷.地震作用下的桥梁碰撞分析改进求解方法[J].公路交通科技,2011,28(3):76-81. |
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| 作者姓名： | 刘鹏 郑凯锋 杨雷 |
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| 作者单位： | 西南交通大学土木工程学院,四川成都,610031 |
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| 摘 要： | 为了准确研究碰撞效应对桥梁造成的破坏以及对桥梁地震响应造成的影响,针对用于桥梁地震碰撞分析的接触单元模型提了一种改进求解方法.该方法把碰撞模型等效为一个弹簧一振子模型,由振子、弹簧和阻尼器构成.振子的运动过程代表碰撞的压缩和恢复过程.可以通过对运动方程的求解,得到相对压入量、相对压入速度、碰撞力、碰撞持续时间及其相互关...
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| 关 键 词： | 桥梁工程 Hertzdamp模型 改进算法 地震碰撞 |
An Improved Algorithm for Seismic Pounding Analysis of Bridges |
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| LIU Peng,ZHENG Kaifeng,YANG Lei.An Improved Algorithm for Seismic Pounding Analysis of Bridges[J].Journal of Highway and Transportation Research and Development,2011,28(3):76-81. |
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| Authors: | LIU Peng ZHENG Kaifeng YANG Lei |
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| Institution: | LIU Peng,ZHENG Kaifeng,YANG Lei(School of Civil Engineering,Southwest Jiaotong University,Chengdu Sichuan 610031,China) |
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| Abstract: | To better study the bridge damages and the seismic response caused by pounding,an improved algorithm of contact element model for seismic pounding analysis of bridges was presented.In this algorithm,the impact model is equivalent to a spring-oscillator model which contains an oscillator,a spring and a damper.The oscillator movement represents the compression and restitution phases of impact.By solving the motion equation,penetration displacement,penetration velocity,impact force,impact time and their mutual... |
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| Keywords: | bridge engineering Hertzdamp model improved algorithm seismic pounding |
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