| 斜入射条件下地下结构时域地震反应分析初探 |
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| 引用本文： | 杜修力,陈维,李亮,李立云.斜入射条件下地下结构时域地震反应分析初探[J].震灾防御技术,2007,2(3):290-296. |
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| 作者姓名： | 杜修力 陈维 李亮 李立云 |
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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,北京,100022 |
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| 基金项目： | 国家自然科学基金;北京市教委科技创新平台建设项目 |
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| 摘 要： | 通过采用平面波和远场散射波混合透射的应力人工边界条件,得到了地震波斜入射的解析方式,以此为基础建立了地震波斜入射条件下,土体与地下结构动力相互作用的时域计算分析模型。以实际建设的南京地铁某车站结构为研究对象,应用大型通用有限元分析软件ANSYS,进行了地震波斜入射条件下地下结构时域地震反应的计算和分析。初步结果表明:在地震波斜入射的情况下,地下结构的动力反应与地震波垂直入射时有较为明显的差异。
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| 关 键 词： | 地下结构 时域地震反应 斜入射 人工边界 |
| 收稿时间： | 2007/7/23 0:00:00 |
| 修稿时间： | 2007-07-23 |
Preliminary Study of Time-Domain Seismic Response for Underground Structures to Obliquely Incident Seismic Waves |
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| Du Xiuli,Chen Wei,Li Liang and Li Liyun.Preliminary Study of Time-Domain Seismic Response for Underground Structures to Obliquely Incident Seismic Waves[J].Technology for Earthquake Disaster Prevention,2007,2(3):290-296. |
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| Authors: | Du Xiuli Chen Wei Li Liang and Li Liyun |
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| Institution: | The Key Laboratory of Urban Security and Disaster Engineering, Beijing University of Technology, Ministry of Education, Beijing 100022, China |
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| Abstract: | In this paper, the time-domain calculating method for dynamic interaction between soil and underground structures object to obliquely incident seismic waves is developed based on the artificial boundary condition that adopts the planar waves and the scattered waves transmitting into the linear elastic infinite media through artificial boundary. Taking Nanjing metro as an example, the time-domain seismic response is calculated and analyzed using the finite element software ANSYS. The preliminary results show that under the action of obliquely incident seismic waves, the dynamic response of underground structures is clearly different from the dynamic response under the action of vertically incident seismic waves. |
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| Keywords: | Underground structure Time-domain seismic response Obliquely incident Artificial boundary condition |
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