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| 隧道地震响应数值模拟研究 | |
| 引用本文： | 熊良宵,李天斌,刘勇.隧道地震响应数值模拟研究[J].地质力学学报,2007,13(3):255-260. |
| 作者姓名： | 熊良宵 李天斌 刘勇 |
| 作者单位： | 1. 同济大学地下建筑与工程系,上海,200092;成都理工大学环境与土木工程学院,四川成都,610059 2. 成都理工大学环境与土木工程学院,四川成都,610059 3. 四川省高速公路开发总公司,四川成都,610041 |
| 摘 要： | 在进行隧道地震响应的数值模拟研究时,横向计算范围和人工边界等对计算结果有很大的影响。本文以黄草坪隧道为研究对象,应用有限差分程序FLAC3D对其进行地震响应的数值模拟研究,将横向计算范围分别取为隧道洞径的5倍、6倍、7倍、8倍、9倍和10倍,并分别采用FLAC3D中的截断边界、自由场地边界和粘性边界进行计算。研究结果表明,当地震波为P波时,横向计算范围取为洞径的7至8倍,人工边界采用自由场地边界或粘性边界是比较合理的。 |
| 关 键 词： | 隧道 地震响应 FLAC3D 横向计算范围 人工边界 |
| 文章编号： | 1006-6616（2007）03-0255-06 |
| 收稿时间： | 2007-05-15 |
| 修稿时间： | 2007年5月15日 |
NUMERICAL SIMULATION OF SEISMIC RESPONSE AT THE ENTRANCE OF THE UNSYMMETRICAL LOADING TUNNEL |
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| XIONG Liang-xiao,LI Tian-bin,LIU Yong.NUMERICAL SIMULATION OF SEISMIC RESPONSE AT THE ENTRANCE OF THE UNSYMMETRICAL LOADING TUNNEL[J].Journal of Geomechanics,2007,13(3):255-260. | |
| Authors: | XIONG Liang-xiao LI Tian-bin LIU Yong |
| Institution: | Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China;College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, China,College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, China and Sichuan Expressway Construction & Development Corporation, Chengdu 610041, S ichuan, China |
| Abstract: | In the mathematic modeling of the seismic resPonse of a tunnel, the lateral calculation range and artificial boundary have great influence on the result of calculation. With the Huangcaoping tunnel as the study objective, its seismic response is simulated using the finite difference procedure FLAC3D. The 5, 6, 7, 8, 9 and 10 times the diameter of the entrance of the tunnel are taken as the lateral calculation range respectively, and the cutting boundary, free-field boundary and viscous boundary in FLAC3D are used for the calculation. The results of the study indicate that it is relatively reasonable to take 7 - 8 times the diameter of the entrance of the tunnel as the lateral calculaiton range and the freefield boundary or viscous boundary as the artificial boundary when the seismic waves are P-waves. |
| Keywords: | tunnel seismic response FLAC~(3D) lateral calculation range artificial boundary |
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