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| 大跨径钢筋混凝土拱桥的地震时程响应分析 | |
| 引用本文： | 孙广龙,宋建永,亓路宽,刘祖胜.大跨径钢筋混凝土拱桥的地震时程响应分析[J].公路交通科技,2007,24(3):86-89. |
| 作者姓名： | 孙广龙 宋建永 亓路宽 刘祖胜 |
| 作者单位： | 1. 北京工业大学,北京,100022 2. 交通部公路科学研究院,北京,100088 3. 四川省交通厅公路规划勘查设计研究院,四川,成都,610041 |
| 基金项目： | 交通部西部交通建设科技资助项目（200331878011） |
| 摘 要： | 针对某在建150 m跨径钢筋混凝土箱形拱桥,采用开发的基于ANSYS的大跨桥梁抗震分析计算模块进行地震加速度时程响应分析。选用天津波和EL-Centro波两种加速度时程曲线,采用一致激励和行波激励分别进行地震时程响应分析。结果表明:与一致激励相比,考虑行波效应时,拱脚弯矩、l/4截面轴力和弯矩均有显著增大,拱脚轴力、拱顶轴力和弯矩则有所减小;各部位的顺桥向位移均增加。开发的抗震分析模块应用于实际工程中效果较好。 |
| 关 键 词： | 桥梁工程 拱桥 地震时程响应 一致激励 行波效应 |
| 文章编号： | 1002-0268(2007)03-0086-04 |
| 修稿时间： | 2006-01-19 |
Seismic Time-history Response Analysis of Long-span Arch Bridge |
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| SUN Guang-long,SONG Jian-yong,QI Lu-kuan,LIU Zu-sheng.Seismic Time-history Response Analysis of Long-span Arch Bridge[J].Journal of Highway and Transportation Research and Development,2007,24(3):86-89. | |
| Authors: | SUN Guang-long SONG Jian-yong QI Lu-kuan LIU Zu-sheng |
| Institution: | 1.Beijing University of Technology, Beijing 100022, China; 2.Research Institute of Highway Ministry of Communications, Beijing 100088, China; 3. Sichuan Province Communications Department Highway Planning, Survey, Design and Research Institute, Sichuan Chengdu 610041, China |
| Abstract: | Seismic time-history response behavior analysis of long-span reinforced concrete box arch bridge is analyzed by using the modules developed with the program ANSYS for a reinforced concrete arch bridge which is being built.This bridge's span is 150 meters.Two acceleration time-history curves Tianjin wave and EL-Centro wave are chosen to analyze seismic time-history response by using uniform excitation and traveling-wave excitation.The results show that compared with the results got from the uniform excitation method,the moment at end arch and at l/4 span,the force at l/4 span both increase a lot,but the force at end arch and top arch,the moment at top arch decrease when the traveling-wave effect is considered. |
| Keywords: | bridge engineering arch bridge seismic time-history response uniform excitation traveling-wave effect |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |