INTEGRATED SYSTEM FOR EARTHQUAKE IMPACT ASSESSMENT

INTEGRATED SYSTEM FOR EARTHQUAKE IMPACT ASSESSMENT
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地震影响评估综合系统

DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
B. Spencer
B. Spencer
中科院分区：
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文献类型：
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作者：
S. Lin;A. Elnashai;Jian Li;B. Spencer

文献摘要

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NEES综合地震风险评估框架（NISRAF）集成了多个组件，以获得最可靠的地震影响评估结果：自由场和结构传感器测量的混合模拟、灾害表征、基于系统识别的模型更新技术、混合脆弱性分析和影响评估工具。软件已通过加州实际测试台的应用程序同时构建和验证。 1994 年北岭地震对洛杉矶地区的区域影响评估结果，使用生成的灾害图和脆弱性曲线，显示出相当准确，但保守。此外，实施的不确定性量化分析有助于决策者轻松、快速地判断估计损失，这将有助于制定更合适、更自信的恢复计划和应急响应。所提出系统的新颖性主要源于地震影响评估组件的集成——其中大部分组件以前从未在此类应用中部署过。为了实现无缝集成并形成操作系统，创新性地使用了多个组件，这些组件经过定制来执行 NISRAF 所需的角色。该集成系统将地震灾害和结构可靠性分析的先进工具带入社会需求的背景下，以准确评估地震对建筑环境的影响。
NEES Integrated Seismic Risk Assessment Framework (NISRAF) integrates several components in order to obtain the most reliable earthquake impact assessment results: hybrid simulation with free-field and structural sensor measurements, hazard characterization, sys- tem identification-based model updating technology, hybrid fragility analysis, and impact as- sessment tool. Software has been built and verified, concurrently, via applications to an actual test bed in California. Regional impact assessment results of the Los Angeles area un- der the 1994 Northridge earthquake, using the generated hazard map and fragility curves, showed reasonable accurate, although conservative. Also, the implemented uncertainty quan- tification analysis aids decision-makers to judge the estimated losses easily and quickly, which will contribute to the development of more suitable and more confident recovery plans and emergency responses. The novelty of the proposed system derives primarily from the integration of components of earthquake impact assessment—most of which have not been deployed in such an applica- tion before. To achieve seamless integration and to arrive at an operational system, several components were used innovatively, tailored to perform the role required by NISRAF. The integrated system brings the advanced tools of earthquake hazard and structural reliability analyses into the context of societal requirement for accurate evaluation of the impact of earthquakes on the built environment.