CONVERTING HAZUS CAPACITY CURVES TO SEISMIC HAZARDCOMPATIBLE BUILDING FRAGILITY FUNCTIONS: EFFECT OF HYSTERETIC MODELS

摘要：

A methodology was recently proposed for the development of hazard-compatible building fragility models using parameters of capacity curves and damage state thresholds from HAZUS (Karaca and Luco, 2008). In the methodology, HAZUS curvilinear capacity curves were used to define nonlinear dynamic SDOF models that were subjected to the nonlinear time history analysis instead of the capacity spectrum method. In this study, we construct a multilinear capacity curve with negative stiffness after an ultimate (capping) point for the nonlinear time history analysis, as an alternative to the curvilinear model provided in HAZUS. As an illustration, here we propose parameter values of the multilinear capacity curve for a moderate-code low-rise steel moment resisting frame building (labeled S1L in HAZUS). To determine the final parameter values, we perform nonlinear time history analyses of SDOF systems with various parameter values and investigate their effects on resulting fragility functions through sensitivity analysis. The findings improve capacity curves and thereby fragility and/or vulnerability models for generic types of structures.

关键词： HAZUS Capacity curve Fragility function

作者: Hyeuk Ryu Nicolas Luco Jack W. Baker Erdem Karaca

作者单位: Dept. of Civil and Environmental Eng., Stanford University, Stanford, CA 94305, USA U.S. Geological Survey, Golden, CO 80401, USA Assistant Professor, Dept. of Civil and Environmental Eng., Stanford University, Stanford, CA 94305, Earthquake Specialist, Swiss Re, Armonk, NY 10504, USA

会议类型: 国际会议

会议名称: 14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)

会议地点: 北京

会议语种:英文

在线出版日期: 2008-10-12（万方平台首次上网日期，不代表论文的发表时间）