Evaluation the P-Delta Effect on Collapse Capacity of Adjacent Structures Subjected to Far-field Ground Motions

Publish Year: 1397
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:

JR_CEJ-4-5_013

تاریخ نمایه سازی: 6 آذر 1397

Abstract:

In urban areas, adjacent structures can be seen in any insufficient distance from each other, because of economic and refusalof acquired minimum separation distance according to seismic previsions. Collapse capacity assessment of structures isone of the important objectives of performance-based seismic engineering. The purpose of this study is to consider thepounding phenomenon and P-Delta effect in seismic collapse capacity assessment of structures. For this purpose, 2, 4, 6and 8-story adjacent structures with different conditions of separation distance among them, were modelled in theOpenSees software. Furthermore, Incremental Dynamic Analyses (IDAs) were performed using 78 far-field ground motionrecords to compute the collapse capacities of adjacent structures. The results obtained from IDAs for adjacent structuresshow that during pounding, taller structure reaches its collapse capacity earlier than shorter one. In addition, by consideringthe P-Delta effect and increasing the distance between adjacent structures, time of collapse and number of impacts increases.According to results, considering the P-Delta effect in modeling has significant influence in seismic collapse capacityassessment of pounding structures.

Authors

Farzin Kazemi

MSc in Earthquake Engineering, Faculty of Engineering and Technology, Imam Khomeini International University, Qazvin, Iran

Mansoor Yakhchalian

Assistant Professor, Faculty of Engineering and Technology, Imam Khomeini International University, Qazvin, Iran

Benyamin Mohebi

Assistant Professor, Faculty of Engineering and Technology, Imam Khomeini International University, Qazvin, Iran