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Empirical seismic vulnerability analysis of infrastructure systems in Nepal
Bulletin of Earthquake Engineering ( IF 4.6 ) Pub Date : 2021-09-06 , DOI: 10.1007/s10518-021-01219-5
Dipendra Gautam 1 , Rajesh Rupakhety 2
Affiliation  

Infrastructure systems are one of the most important attributes of modern society. Earthquake induced damage to infrastructure not only results in economic losses, but also secondary effects caused by their loss of function. Proper understanding of seismic vulnerability of critical infrastructure is therefore essential for disaster risk reduction. The 2015 Gorkha earthquake (MW 7.8) and its aftershocks caused widespread damage to various infrastructure systems in Nepal. This study is an attempt to quantify seismic vulnerability and fragility functions of some of the most severely affected infrastructure systems, i.e., road pavements, highway bridges, irrigation systems, hydropower systems, and brick kiln chimneys. These functions are based on empirical data of loss/damage collected after the earthquake. Although there is considerable uncertainty in the estimation of ground motion intensity and limitations in the range of observed damages, the results highlight that these infrastructures are highly vulnerable to ground shaking and could experience major damage and significant losses during moderate to strong ground shaking.



中文翻译:

尼泊尔基础设施系统的经验地震脆弱性分析

基础设施系统是现代社会最重要的属性之一。地震对基础设施造成的破坏不仅会导致经济损失,还会因功能丧失而造成二次影响。因此,正确理解关键基础设施的地震脆弱性对于减少灾害风险至关重要。2015年廓尔喀地震(M w ^7.8)及其余震对尼泊尔的各种基础设施系统造成广泛破坏。本研究试图量化一些受影响最严重的基础设施系统的地震脆弱性和脆弱性函数,即道路路面、公路桥梁、灌溉系统、水电系统和砖窑烟囱。这些函数基于地震后收集的损失/损坏的经验数据。尽管对地震动强度的估计存在相当大的不确定性,并且观测到的破坏范围受到限制,但结果表明,这些基础设施极易受到地面震动的影响,并且在中度到强烈的地面震动期间可能会遭受重大破坏和重大损失。

更新日期:2021-09-07
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