| 基于纤维模型的高墩连续刚构桥地震行波效应分析 |
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| 引用本文： | 张磊,韩强,杜修力.基于纤维模型的高墩连续刚构桥地震行波效应分析[J].震灾防御技术,2009,4(3):312-320. |
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| 作者姓名： | 张磊 韩强 杜修力 |
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| 作者单位： | 北京工业大学城市与工程安全减灾省部共建教育部重点实验室,北京,100124 |
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| 基金项目： | 国家自然科学基金项目 |
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| 摘 要： | 本文基于在MSC.Marc中加入纤维模型编制的THUFIBER程序的基础上,分别采用纤维模型和三维实体单元模型模拟桥墩和上部结构,建立高墩大跨连续刚构桥有限元模型。同时,采用2008年汶川地震波,分析了行波效应对四川某高墩大跨连续刚构桥非线性地震反应的影响。结果表明：行波效应对高墩桥的墩顶位移和墩底剪力影响较大,墩顶位移减小了20%—50%;而墩底剪力增大了20%—30%。
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| 关 键 词： | 大跨度桥梁 纤维模型 地震响应 行波效应 高墩 |
| 收稿时间： | 5/6/2009 12:00:00 AM |
Seismic Traveling Wave Effect of Continuous Rigid-frame Bridge with High Piers Base on Fiber Model |
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| Zhang Lei,Han Qiang and Du Xiuli.Seismic Traveling Wave Effect of Continuous Rigid-frame Bridge with High Piers Base on Fiber Model[J].Technology for Earthquake Disaster Prevention,2009,4(3):312-320. |
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| Authors: | Zhang Lei Han Qiang and Du Xiuli |
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| Institution: | The Key Lab. of Urban Security and Disaster Engineering of Ministry ofEducation, Beijing University of Technology, Beijing 100124, China;The Key Lab. of Urban Security and Disaster Engineering of Ministry ofEducation, Beijing University of Technology, Beijing 100124, China;The Key Lab. of Urban Security and Disaster Engineering of Ministry ofEducation, Beijing University of Technology, Beijing 100124, China |
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| Abstract: | In this paper, with application of THUFIBER program, fiber model is used to simulate bridge piers and solid element is used to simulate the superstructure in program MSC.Marc. The effects of traveling wave on the nonlinear seismic response of long-span continuous rigid-frame bridge with high piers are analyzed under 2008 Wenchuan earthquake wave excitation. Out results show that traveling wave has a great effect on displacement and shear force of high piers of the bridge. The displacement of top of pier decreases 20% to 50% and shear force at base of pier increases 20% to 30%. |
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| Keywords: | Long-span bridge Fiber model Seismic response Traveling wave effect High pier |
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