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A method for automated development of model and fragility inventories of nonductile reinforced concrete buildings

Resilient Cities and Structures 2023年第3期2卷 87-103页

作者： Peng-Yu Chen Nikolaos Lesgidis Anastasios Sextos Ertugrul Taciroglu National Central University Civil Eng.Dept.TaoyuanTaiwan Deep Excavation LLC New YorkUSA University of Bristol Civil Eng.Dept.BristolUK UCLA Civil&Env.Eng.Dept.Los AngelesCA 90095USA

The nonductile reinforced concrete building(NDRCB)stock-typically,pre-1974 structures in the U.S.-is a well-known high-risk group for seismic *** studies indicate that there are approximately 1500 NDRCBs in Los *** various ordinances,the owners are currently required to choose between demolition and,when appropriate,seismic *** fulfilling these ordinances will take decades,the potential risk of major losses will *** this study,a method for automated development of structural analysis models and damage fragilities for non-ductile moment-resisting frames is *** capability enables seismic risk assessment at a regional scale using relatively limited building metadata and the era-specific seismic design *** approach is used first to develop archetypal models in OpenSees,verified through static pushover and nonlinear time-history analyses against prior detailed *** curves for discrete damage states are developed through a probabilistic seismic demand *** investigations are carried out to consider the influence of soil-structural interaction effects and to determine the most suitable seismic intensity measures to quantify the seismic damage levels of NDRCB *** sensitivity of the proposed modeling method to variations/uncertainties in building configurations and properties is also examined through parametric *** method is limited to a particular subcategory of NDRBCs-namely,moment-resisting frames-but extensions to other types appear straightforward.

关键词： nonductile reinforced concrete building Fragility curve Optimal intensity measurement Soil-Structure interaction Sensitive analysis

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