基于震害统计的城市地下空间地震安全性评价
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本文为国家自然科学基金资助项目(编号:41872223)和中国地质调查局二级地调项目“惠州多要素城市地质调查”(编号:DD20190287)的成果


Seismic hazard assessment of urban underground space based on seismic hazard statistics
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    摘要:

    建筑物的地震安全性是城市规划和建设过程首先要回答的问题。我国城市地震安全性评价的方法理论多针对地上建筑物,而对地下空间的地震安全性研究较为薄弱,严重滞后于城市发展对地下空间的需求。活断层是诱发地震、导致建筑物破坏的的直接因素。考虑到空间关系上,地下空间与断层之间的交互关系为相交或相离。因此,本文将地下空间分为两类:与断层相交的地下空间称为跨断层地下空间,远离断层的地下空间称为远离断层地下空间。本文尝试将断裂带同震地表破裂、地震峰值加速度、地震烈度等地表地震安全性评价考量的要素与地下空间埋藏深度建立联系,并在此基础上总结基于震害统计的地下空间地震安全性评价方法。最后,本文选取地下空间利用需求较高的深圳和北京地区为实例进行介绍。

    Abstract:

    Objectives: Earthquake security of buildings should be firstly considered in the urban planning and the process of urban construction. The methods of seismic safety assessment of China mainly focus on surface buildings. However, the study on the earthquake security of underground space is weak, which cannot meet the raising demands for underground space. Active faults are the direct factor of earthquakes and the main cause of buildings damages. As underground spaces whether intersect faults or not, it was divided into cross-fault underground space and far from fault underground space. Methods: This paper reviewed the analytical methods of the seismic hazard assessment of underground space destruction by active fault and summarized the evaluation methods about how seismogenic faults affect underground space in adjacent areas, based on the relationship among coseismic surface rupture, peak acceleration of earthquake, seismic intensity and the focal depth. Results: This paper summarized the method of Seismic hazard assessment of urban underground space based on seismic hazard statistics based on literature review and Shenzhen and Beijing were choosen as examples to show how the method is applied. Conclusions: This paper offered a method based on seismic hazard statistics for studying the seismic hazard assessment of urban underground. And we must stress that this method is based on statistics data. To get a precise evalution, much more researches should be done.

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王强茂,李海龙,李廷栋,尹启航,王逸文,范艳霞.2019.基于震害统计的城市地下空间地震安全性评价[J].地质论评,65(6):1397-1407,[DOI].
WANG Qiangmao, LI Hailong, LI Tingdong, YIN Qihang, WANG Yiwen, FAN Yanxia.2019. Seismic hazard assessment of urban underground space based on seismic hazard statistics[J]. Geological Review,65(6):1397-1407.

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  • 收稿日期:2019-04-26
  • 最后修改日期:2019-08-26
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  • 在线发布日期: 2019-11-15
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