Investigation of the Progressive Collapse Potential in Steel Buildings with Composite Floor System
Publish place: Structural Engineering & Geotechnic، Vol: 9، Issue: 2
Publish Year: 1398
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_QSEJ-9-2_001
تاریخ نمایه سازی: 11 مرداد 1399
Abstract:
Abnormal loads due to natural events, implementation errors and some other issues can lead to occurrence of progressive collapse in structures. Most of the past researches consist of ۲- Dimensional (۲D) models of steel frames without consideration of the floor system effects, which reduces the accuracy of the modeling. While employing a ۳-Dimensional (۳D) model and modeling the concrete slab system for the floors have a crucial role in the progressive collapse evaluation. In this research, a ۳D finite element model of a ۵-story steel building is modeled by the ABAQUS software once with modeling the slabs, and the next time without considering them. Then, the progressive collapse potential is evaluated. The results of the analyses indicate that the lack of the consideration of the slabs during the analyses, can lead to inaccuracy in assessing the progressive failure potential of the structure. The results show that a structure is subjected to unusual external loads such as a motor vehicle collision, explosion of a bomb in a vehicle, etc., the most critical columns are located in the nearest frame to the outer frame in the structure.
Keywords:
abnormal loads , composite floor system , intermediate steel moment resisting frame system , Progressive collapse
Authors
pouya kaafi
Department of Civil Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran
gholamreza ghodrati Amiri
Department of Civil Engineering,Iran University of Science & Technology