| 冻土场地地震反应分析研究中的关键问题探讨 |
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| 引用本文： | 李琼林,,胡进军,王琼.冻土场地地震反应分析研究中的关键问题探讨[J].世界地震工程,2019,35(2):209-216. |
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| 作者姓名： | 李琼林 胡进军 王琼 |
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| 作者单位： | 1. 黑龙江省地下工程技术重点实验室, 哈尔滨学院, 黑龙江 哈尔滨 150086;2. 中国地震局工程力学研究所, 中国地震局地震工程与工程振动重点实验室, 黑龙江 哈尔滨 150080 |
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| 摘 要： | 总结了当前场地地震反应分析的计算方法与发展现状，得到寒区场地中由于冻土层结构的存在会对地震动的传播和场地的地震反应产生影响的结论。土体在冻结过程中其强度与刚度会显著增强，在地震过程中冻融土层界面的容易发生滑移破坏，并对场地地震反应和地震波的传递特征具有较大影响，是冻土场地地震反应分析中应当考虑的关键问题。鉴于当前场地地震反应计算方法不能模拟该界面的滑移特征的局限性，建议构建冻土场地地震反应计算新方法，并阐述了构建该方法所需要开展的基础性研究工作。
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| 关 键 词： | 冻土场地 场地地震反应 冻融界面 土层结构 界面滑移 |
Reviews on the seismic site response of frozen soil sites |
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| LI Qionglin,' target="_blank" rel="external">,HU Jinjun,WANG Qiong.Reviews on the seismic site response of frozen soil sites[J].World Information On Earthquake Engineering,2019,35(2):209-216. |
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| Authors: | LI Qionglin " target="_blank">' target="_blank" rel="external"> HU Jinjun WANG Qiong |
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| Institution: | 1. Key Laboratory of Underground Engineering and Technology of Heilongjiang Province, Harbin University, Harbin 150086, China;2. Institute of Engineering Mechanics, China Earthquake Administration;Key Laboratory of Earthquake Engineering and Engineering Vibration of China Earthquake Administration, Harbin 150080, China |
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| Abstract: | The present situation of the computational method and development on seismic site response weresummarized, and it is concluded that the frozen soil layers in the ground site can significantlyaffect the wave propagation and site seismic responses.During the freezing process, the strength and stiffness of soil will be significantly enhanced,and the interface between frozen and thaw soil layers is prone to slip and failure in an earthquake, which has a great impact on the wave propagation and seismic responses of the frozen soil sites. The issue is important for the seismic response of frozen soil sites. The interface slip cannot be simulated by the present existing method, therefore, a new method needs be provided. Lastly, some basic issues are clarified for solving this problem. |
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| Keywords: | frozensoil site siteseismicresponses interface between frozen and thaw soils soil structure interface slip |
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