共查询到18条相似文献，搜索用时 46 毫秒
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玉树地震地表破裂对建筑物影响的分析 总被引：1，自引：0，他引：1
本文首先以玉树县结古镇、隆宝镇沿破裂带追索等调查资料为例,详细介绍了该地区地震破裂带附近的典型建(构)筑物灾害事例,然后结合既往有关的科研成果和关于汶川地震地表破裂的研究成果,根据地表破裂的特征和建(构)筑物震害性质,对考察现象进行了分析和讨论,探索提出了玉树地震地表破裂宽度和建(构)筑物震害指数的相关性和基本特点,为今后该地区的抗震防灾提供参考。 相似文献
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总结了2008年汶川8.0级地震在甘肃陇南地区造成的农村房屋和城镇房屋的典型震害及其原因。考察发现,由于农村房屋一般未经抗震设防设计,在本次地震中即使在低烈度地区仍然震害严重;而城镇房屋震害较轻,一般均表现出良好的抗震性能,严重破坏的大多是一些施工质量差,缺乏良好的抗震概念设计以及改建时未考虑抗震设计的建筑。建筑震害调查的几个地区设防烈度均为Ⅷ度,实际烈度为Ⅵ～Ⅸ度,因此这些地区的房屋震害情况刚好能反映这些地区房屋抵抗小震、中震及大震的能力。结果表明,严格按照抗震规范设计、并保证施工质量的建筑基本都能达到三水准设防目标。最后本文对灾后重建和抗震设防提出了建议。 相似文献
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Based on the network monitoring data and field investigations, the basic characteristics of the Ms4. 9 earthquake at the juncture of Gaoyou and Baoying in Jiangsu Province on July 20, 2012 have been introduced, and the focal mechanism solutions have also been obtained. According to the regional tectonic features and site macroscopic survey, the occurrence of the earthquake was probably related to the Yangchacang-Sangshutou fault. Based on site survey data, both the evaluation criterion of seismic intensity of this region and the seismic intensity maps have been proposed. According to the damage characteristics of brick-concrete structure and brick-wood structure, the main reasons of serious damage for buildings are poor foundation conditions, low seismic bearing capacity, poor quality of construction and disrepair. Considering the differences of earthquake damage in the different regions, advice on accelerating the new rural construction, improving the resistance against earthquake disasters of rural residential areas and strengthening the seismogenic research on strong and moderate size earthquake is proposed, which will be possibly helpful for earthquake damage survey, prediction and prevention. 相似文献
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基于综合震害指数的玉树地震烈度遥感评估研究 总被引：4，自引：0，他引：4
本文概述了地震烈度遥感评估的思路和方法,给出了遥感综合震害指数、地面等效震害指数计算的模型和地震烈度估计方法。利用2010年青海玉树7.1级地震发生后获取的主要地震灾区玉树县城区结古镇高分辨率航空遥感影像及其遥感震害解译结果和震后地震现场震害遥感比对科学考察成果,进行了结古镇的地震受灾程度和地震烈度的遥感评估。综合分析表明,玉树县城区遥感评估的地震烈度为IX度,与地面调查确定的地震烈度一致。文章最后对结果进行了讨论,表明遥感方法对应急烈度评估具有实用价值。 相似文献
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Wang Xiaoqing Wang Long Zhang Xihai Ding Xiang Qiu Hu Dong Yanfang DouAixia Zhang Feiyu Liu Zaitao 《中国地震研究》2009,23(4):392-401
The fast developing remote sensing techniques play an increasingly important role in earthquake emergency response, disaster survey and loss estimation. As there is a lack of quantitative studies on seismic damage based on remote sensing, its practicality in seismic disaster management has usually been questioned. The paper introduces the essential quantitative study idea, the concept of the remote sensing seismic damage index (DRS_I RS) and analysis models, demonstrates the seismic damage indices (DG_IC) of buildings obtained from ground surveying and its quantitative relation to DRS_I RS in Dujiangyan city, Sichuan Province, which was destroyed by the 2008 Wenchuan earthquake with M_S8.0. The primary results show that an obvious relationship exists between the DRS_I RS of buildings obtained from the high resolution satellite or aerial remote sensing images and DG_I C or the building collapse ratio obtained through ground survey, which suggests that the quantitative study on seismic damage based on remote sensing will provide an effective method for seismic damage survey and loss estimation. 相似文献