Assessment of ASCE 41-17 nonlinear static procedure for near-fault and far-fault sites

سال انتشار: 1397
محل انتشار: سومین کنفرانس بین المللی عمران ، معماری و طراحی شهری
کد COI اختصاصی: ICCACS03_918
زبان مقاله: انگلیسی
تعداد مشاهده: 572

نویسندگان

PhD candidate, Department of Civil and Environmental Engineering, Shiraz University, Shiraz, Iran,

Professor, Department of Civil and Environmental Engineering, Shiraz University, Shiraz, Iran,

چکیده

Performance based seismic design (PBSD) is a promising approach for assessment of existing and new buildings. While nonlinear dynamic procedure (NDP) is regarded as the most accurate numerical evaluation tool in the PBSD context, simpler approaches such as nonlinear static procedure (NSP) and linear dynamic procedure (LDP) are more desirable for practitioners. Especially, NSP has become a popular approach among practitioners due to its simplicity and low computational costs. In this paper, the reliability of ASCE 41-17 nonlinear static procedure is investigated through consideration of 1250 single-degree-offreedom (SDOF) systems. Ten near-fault along with ten far-fault earthquake records are employed for evaluating responses of the considered SDOF systems. By performing 25000 nonlinear time-history analyses, it is shown that the reliability of NSP for near-fault sites is under question due to large and unconservative errors of the method. The results of this paper show that NSP errors for far-fault sites are less than those obtained for near-fault sites. However, they are conservative only if the fundamental period of the system is small.

کلیدواژه ها

Performance based seismic design, Nonlinear static procedure, Nonlinear dynamic procedure, Near-fault sites, Far-fault sites

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