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城市地震风险整体评价方法及其应用 被引量:6
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作者 许同生 刘茂 +2 位作者 张秀华 操铮 吕彦 《安全与环境学报》 CAS CSCD 北大核心 2010年第4期189-196,共8页
城市已经成为我国防震减灾的重中之重,国家越来越重视城市地震风险管理,将地震灾害管理的重点集中在城市地震风险的评估和管理工作上。通过计算预期的物理破坏、经济损失和人员伤亡,并考虑社会的脆弱性和恢复的能力等其他因素的影响,将... 城市已经成为我国防震减灾的重中之重,国家越来越重视城市地震风险管理,将地震灾害管理的重点集中在城市地震风险的评估和管理工作上。通过计算预期的物理破坏、经济损失和人员伤亡,并考虑社会的脆弱性和恢复的能力等其他因素的影响,将各种因素的值进行转化,形成可以进行相加的指数,并乘以相应的权重,最终得到城市的地震风险。从地震风险管理的角度出发,引入城市地震整体风险评价法对淮南市的地震风险进行评估,并给出了提高地震防灾减灾能力的几条建议,为城市地震防灾减灾提供参考。 展开更多
关键词 安全科学技术基础学科 城市地震风险 整体风险评价法 层次分析法 风险区划
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面向城市地震风险评估的人口空间分布研究
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作者 朱玉群 肖东升 《测绘科学》 CSCD 北大核心 2023年第9期262-272,共11页
针对现有人口空间分布研究成果大多是格网数据,无法反映建筑物内的人口数量的问题,提出了一种新的计算不同时段建筑物内人口数量的方法:(1)定位率算法融合年龄比重,算法改进前后的人口估算数据与人口普查数据回归分析得出决定系数分别为... 针对现有人口空间分布研究成果大多是格网数据,无法反映建筑物内的人口数量的问题,提出了一种新的计算不同时段建筑物内人口数量的方法:(1)定位率算法融合年龄比重,算法改进前后的人口估算数据与人口普查数据回归分析得出决定系数分别为0.9368、0.9471;(2)基于1 km格网人口数据和POI核密度数据,采用主成分分析确定人口权重,利用泰森多边形对1 km格网数据重分配,得到100 m格网人口数据,街道尺度绝对误差明显降低;(3)基于100 m格网人口数据、在室率和建筑物的人口吸引力的时序值,实现了贴合实际的建筑物尺度的人口分布。结果表明:改进定位率算法提高了人口估算值精度;POI核密度数据有助于反映城市人口分布的内部结构;建筑物尺度人口分布算法去除了室外人口,反映不同时间建筑物内人口数量,为地震应急救援力量部署决策提供数据支持。 展开更多
关键词 城市地震风险评估 建筑物 POI 主成分分析 在室率
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Mapping Seismic Vulnerability and Risk of Cities: The MASSIVE Project
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作者 Charalampos Kontoes Themistoklis Herekakis +8 位作者 Emmanouela Ieronymidi Iphigenia Keramitsoglou Anna Fokaefs Gerasimos A. Papadopoulos Sideris Paralikidis Dorothea Aifantopoulou Anna Maria Deflorio Daniela Iasillo Chris T. Kiranoudis 《Journal of Earth Science and Engineering》 2012年第8期496-513,共18页
MASSIVE (mapping seismic vulnerability and risk of cities) is a GIS-based earthquake preparedness system that was developed under the European Union Civil Protection Mechanism project (GA No. 070401/2009/540429/SUB... MASSIVE (mapping seismic vulnerability and risk of cities) is a GIS-based earthquake preparedness system that was developed under the European Union Civil Protection Mechanism project (GA No. 070401/2009/540429/SUB/A4), in order to provide civil protection authorities with accurate, and easily transferable tools for generating up-to-date maps of seismic hazard, seismic vulnerability and seismic risk of buildings, at the scale of the single building block. In addition, MASSIVE developed and ran state-of-the-art models to assess the risk for population evacuation in dense urban agglomerations given an earthquake event. The MASSIVE methodology was designed, implemented and validated considering two European pilot sites, heavily struck by recent earthquakes, which are the western part of the Larger Metropolitan Area of Athens (GR), and the city of L' Aquila in the Abruzzo Region (IT). The validation of the results using past earthquake records shows that the performance of MASSIVE is prosperous, achieving a correlation between the modeled and the on-site measured PGAs (peak ground accelerations) higher than 0.75, while the correlation between the on-site reported building damages and the ones predicted by the MASSIVE system has been of the order of 0.80. 展开更多
关键词 MASSIVE seismic risk damage assessment building vulnerability evacuation risk.
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The Policies of Seismic Risk Management: Case of the Protected Areas of Dellys and Tenes Cities, Algeria
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作者 Farida Sehili Said Madani 《Journal of Civil Engineering and Architecture》 2017年第2期121-126,共6页
The greater part of urban heritage, especially of the medium and small Algerian cities, is subject to a major seismic risk. The probability of a happening earthquake is strong, and the territories vulnerability is gre... The greater part of urban heritage, especially of the medium and small Algerian cities, is subject to a major seismic risk. The probability of a happening earthquake is strong, and the territories vulnerability is great. Legislative procedures are implemented to support urban heritage and managing natural disasters. In fact, the PPSMVSS (permanent plan of safeguard and enhancement of saved sectors) as an instrument of protection, preservation and enhancement of this heritage, in its content, does not guide decision makers on how to manage the vulnerability of preserved areas from the earthquake. After the disaster of the earthquake that hit the Algerian Centre (wilaya of Boumerdes) in 2003. A legislative framework was created while other texts have been adapted. Emergency measures operations are launched to preserve the under threat monuments and protected areas. Saved sectors of Dellys, in the wilaya of Boumerdes and T6n^s in the wilaya of Chlef, are all the time subjected to seismic risk. This article presents a comparative study of two PPSMVSS, Dellys and T6n6s, and the management of the vulnerability of their two safeguarded areas. As a result of this study, some indicators were identified to allow the development of plans for the protection and management natural risks of these protected areas. 展开更多
关键词 Safeguarded sector PPSMVSS CATASTROPHE seismic risk management.
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