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原文传递 Analytical and Experimental Evaluation of Progressive Collapse Resistance of a Flat-Slab Posttensioned Parking Garage
题名: Analytical and Experimental Evaluation of Progressive Collapse Resistance of a Flat-Slab Posttensioned Parking Garage
其他题名: ACI(American Concrete Institute).(2011)."Building code requirements for structural concrete and commentary."ACI 318-11,Farmington Hills,MI.
正文语种: 英文
作者: Leila Keyvani
关键词: Concrete slabs;Progressive collapse;Posttensioning;Full-scale tests;Concrete and masonry structures
摘要: Despite the popularity of posttensioned (PT) floors for parking garages and the likelihood of a column loss, due to blast or vehicle impact, there is a lack of research on the progressive collapse potential of this structural system subsequent to initial damage. In this paper, progressive collapse resistance of an actual posttensioned parking garage is evaluated experimentally and analytically. An interior column was removed by explosion and the structure resisted progressive collapse with a permanent maximum vertical displacement of about 61 mm (2.4 in.). Analytical models of the garage are developed using computer software and nonlinear dynamic analyses are performed. The interaction between the tendon and the slab is modeled explicitly. The analytical results show that despite the fact that the slab around the removed column had no bottom reinforcement and the tendons were placed close to the top of the slab, pushing the slab down, the compressive membrane forces developed in the slab helped increase the flexural strength of the slab sections. The gravity load redistribution is discussed and characterized.
出版年: 2015
论文唯一标识: P-26Y2015V141N11015
英文栏目名称: Technical Papers
doi: 10.1061/(ASCE)ST.1943-541X.0001279
期刊名称: Journal of Structural Engineering
拼音刊名(出版物代码): P-26
卷: 141
期: 11
页码: 152-159
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