| SH波水平入射穿越垂直断层隧道动力响应分析 |
| |
| 引用本文： | 杜修力,苏驰翔,黄景琦,王媛,赵密,欧阳文龙.SH波水平入射穿越垂直断层隧道动力响应分析[J].震灾防御技术,2019,14(2):269-280. |
| |
| 作者姓名： | 杜修力 苏驰翔 黄景琦 王媛 赵密 欧阳文龙 |
| |
| 作者单位： | 1.北京工业大学, 城市与工程安全减灾教育部重点实验室, 北京 100124 |
| |
| 基金项目： | 国家自然科学青年基金（51608015），中央高校基本科研业务费专项资金资助项目（FRF-TP-17-074A1），“973”项目计划（2015CB057902） |
| |
| 摘 要： | 结合黏弹性人工边界的时域波动输入方法和显式有限元法，设计了含垂直断层三维场地的SH波输入方法。基于建立的输入方法，研究了垂直断层对隧道地震响应的影响，并通过自由场算例验证了该方法具有较好精度。数值模拟结果表明:对于断层迎波侧的隧道结构，断层会对其地震动响应产生显著的放大作用，对于断层逆波侧的隧道结构，断层会对其产生隔离地震动的作用；相对周围围岩，断层介质的剪切波速越小，其产生的放大效应和隔震效果也会越显著；断层宽度越小，其对隧道地震动响应的影响范围也就越小，但是断层宽度的变化对于断层两侧隧道的地震动响应的影响并不明显。
|
| 关 键 词： | SH波 垂直断层 隧道地震响应 时域显式有限元 黏弹性人工边界 |
| 收稿时间： | 2018/11/2 0:00:00 |
Analysis of Dynamic Response of Rock Tunnels with Vertical Fault Fracture Zone under SH Waves |
| |
| Du Xiuli,Su Chixiang,Huang Jingqi,Wang Yuan,Zhao Mi and Ouyang Wenlong.Analysis of Dynamic Response of Rock Tunnels with Vertical Fault Fracture Zone under SH Waves[J].Technology for Earthquake Disaster Prevention,2019,14(2):269-280. |
| |
| Authors: | Du Xiuli Su Chixiang Huang Jingqi Wang Yuan Zhao Mi and Ouyang Wenlong |
| |
| Institution: | 1.The Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing 100124, China2.School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China |
| |
| Abstract: | On the basis of the time-domain wave method coupling the explicit finite element method with the viscous-spring artificial boundary condition, the input method of horizontal propagating SH waves for rock-vertical fault system is proposed in this study. The precision of the present approach is verified by a half space example. Subsequently, the proposed method is applied to investigate the long lined tunnels through vertical fault zone subjected to SH waves. The numerical results indicate that the dynamic response of tunnels on meeting waves side is amplified, whereas that on back waves sides is reduced. With increasing the shear wave velocity, the response of tunnels on meeting waves side decreases and that of the other side increases. The influence scope increases with increasing the width of fault. However, the amplitudes of tunnel''s acceleration and stress do not have remarkable change. |
| |
| Keywords: | SH waves Vertical fault Seismic responses of rock tunnels Time-domain wave method Viscous-spring artificial boundary condition |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《震灾防御技术》浏览原始摘要信息 |
| 点击此处可从《震灾防御技术》下载免费的PDF全文 |
