COMPARISON OF PERFORMANCE OF MID HEIGHT STEEL BRACED ROCKING BUILDINGS WITH LOW RISE BUILDINGS

Publish Year: 1398
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

SEE08_203

تاریخ نمایه سازی: 27 خرداد 1399

Abstract:

Controlled-rocking braced frames are capable of reducing the drawbacks of conventional frames against seismic loading. Commercially available technologies are used to propose a system that is capable of damage control, elimination or reduction of residual stresses, collapse prevention (CP), and postearthquake realignment and repairs (PERR). The new approach was inspired by the current state of knowledge and the need to develop sustainable steel braced frame with rocking motion. The purpose of this paper is to investigate the effect of seismic performance of 3 and 15 story buildings with and without rocking motion and appropriate placement of brace frame in steel braced buildings. In this paper, using nonlinear response history analysis, response parameters of 2, three dimensional 3 and 15-story buildings are compered. The seismic behavior are studied under far- field earthquakes records at two maximum PGA levels of 0.35g and 0.7g. Responses such as performance level, the vertical and horizontal acceleration, the maximum inter-story drift and the amount of uplift displacement of the columns base, show that the rocking models have generally a better performance compared to the fixed model. Also, by moving the locations of bracings to the corners and inside the building the responses are more favorable

Authors

Razieh Ansari Targhi

Graduate student, Earthquake Engineering Department, University of Science & Culture, Tehran, Iran

Abdolreza S. Moghadam

Associate Professor, International Institute of Earthquake Engineering and Seismology (IIEES), Tehran, Iran

Marzieh Ansari Targhi

Graduate student, Earthquake Engineering Department, University of Science & Culture, Tehran, Iran