Scaled accelerographs for design of structures in Quetta, Baluchistan, Pakistan
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- 作者：Abdul Qadir Bhatti
- 关键词：Accelerographs ; Seismic design of structures ; Response spectrum analysis ; Response history analysis ; Design spectrum
- 刊名：International Journal of Advanced Structural Engineering (IJASE)
- 出版年：2016
- 出版时间：December 2016
- 年：2016
- 卷：8
- 期：4
- 页码：401-410
- 全文大小：1,982 KB
- 刊物主题：Building Construction;
- 出版者：Springer Berlin Heidelberg
- ISSN：2008-6695
- 卷排序：8
文摘
Structural design for seismic excitation is usually based on peak values of forces and deformations over the duration of earthquake. In determining these peak values dynamic analysis is done which requires either response history analysis (RHA), also called time history analysis, or response spectrum analysis (RSA), both of which depend upon ground motion severity. In the past, PGA has been used to describe ground motion severity, because seismic force on a rigid body is proportional to the ground acceleration. However, it has been pointed out that single highest peak on accelerograms is a very unreliable description of the accelerograms as a whole. In this study, we are considering 0.2- and 1-s spectral acceleration. Seismic loading has been defined in terms of design spectrum and time history which will lead us to two methods of dynamic analysis. Design spectrum for Quetta will be constructed incorporating the parameters of ASCE 7-05/IBC 2006/2009, which is being used by modern codes and regulation of the world like IBC 2006/2009, ASCE 7-05, ATC-40, FEMA-356 and others. A suite of time history representing design earthquake will also be prepared, this will be a helpful tool to carryout time history dynamic analysis of structures in Quetta.