From a GIS-based hybrid site condition map to an earthquake damage assessment in Iran: Methods and trends
From a GIS-based hybrid site condition map to an earthquake damage assessment in Iran: Methods and trends
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从基于 GIS 的混合场地状况图到伊朗地震损失评估：方法和趋势
DOI：
10.1016/j.ijdrr.2017.02.016
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发表时间：
2017
影响因子：
5
通讯作者：
Matsuoka Masashi
中科院分区：
文献类型：
--
作者：
Karimzadeh Sadra;Feizizadeh Bakhtiar;Matsuoka Masashi
从几十年前开始，顶部30 m的平均剪切波速度（Vs 30）已被提出作为反映场地放大行为的重要因素之一。大多数抗震设计标准，如美国的国家地震减灾计划和伊朗的2800号标准，都强调使用Vs 30测量值根据土壤类型进行场地分类。作为深入降低地震风险的重要一步，在全国范围内开展了场地效应研究。我们遵循一种间接的方法，从地质和地形数据产生伊朗的Vs 30地图。实验结果表明，混合Vs30map比基于单一地形的Vs30map具有更好的性能。根据Vs 30和地质图推导出的振幅图用于大不里士市的地震小区划，并通过考虑不同的易损性曲线来描述城市中普通建筑类型的破坏行为，研究了可能的确定性情景（M=7）下破坏的地理分布范围。
From several decades ago, the average shear wave velocity for the top 30 m (Vs30) has been proposed as one of the important factors that reflects the amplification behavior of a site. Most of seismic design standards such as National Earthquake Hazards Reduction Program in the United States and Standard No. 2800 in Iran emphasize on the use ofVs30measurements for site classification according to the soil type. As an important step in profound seismic risk reduction to earthquakes, a site effect study was conducted at a nationwide scale. We followed an indirect method to produceVs30map of Iran from geological and topographical data. The outputs indicate that hybridVs30map has better performance than single topography-basedVs30map. The amplitude map deduced fromVs30and geology maps then is used for seismic microzonation of Tabriz city and extent of geographical distribution of damage for a possible deterministic scenario (M=7) is investigated through considering different fragility curves to describe damaging behavior of ordinary building types in the city.