Simulation of Near-Fault Ground Motions With Equivalent Pulses &Compare Their Effects on MRF Structures
According to the recent earthquakes Near-Fault ground motions in the vicinity of quake field caused many damages. There is evidence indicating that ground shaking near a fault rupture may be characterized by an impulsive motion that exposes structures to high input energy at the beginning of the record. This pulse-type motion is particular to the forward direction, where the fault rupture propagates toward the site at a velocity close to the shear wave velocity, causing most of the seismic energy to arrive at the site within a short time. Near-fault Earthquake (NFE) come in large variations and this variety complicates evaluation or prediction of structural response unless they can be represented by a small number of simplified motions that can reasonably replicate important Near-Fault response characteristics. In this study, three pulse type models (which proposed by Makris & Agrawal previously) is used to simulate the Near-Fault records and their effect of this simulated motions on structures are compared to the actual NFE ones. For this reason, Four Near-Fault records are selected and we conduct this research by doing time history analysis & selecting 5,8 &12 stories steel buildings designed according to IRAN 2800 code. The results show that, with limitations, Near-Fault records can be represented by equivalent pulses to understand structural response but applying this result to design process is not recommended.
Near-Fault Earthquakes IRAN 2800 code Pulse-type motions Simulated motions Simplified equivalent pulses Time history analysis.
Javad Vaseghi Amiri M.R. Davoodi Aliasghar Sahafi
Associate Professor of Noshirvani University of Technology, Babol, Iran. Assistance Professor of Noshirvani University of Technology, Babol, Iran. M.S.C student of Noshirvani University of Technology, Babol, Iran.
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）