Numerical Study of Damage Modes and Damage Assessment of CFST Columns under Blast Loading
Columns of frame structures are the key load-bearing components and the exterior columns are susceptible to attack in terrorist blasts. When subjected to blast loads, the columns would suffer a loss of bearing capacity to a certain extent due to the damage imparted, which may induce the collapse of...
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2016-01-01
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Series: | Shock and Vibration |
Online Access: | http://dx.doi.org/10.1155/2016/3972791 |
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doaj-e5e59674ae044dd3877a14ad0a4a1d8f2020-11-24T21:33:11ZengHindawi LimitedShock and Vibration1070-96221875-92032016-01-01201610.1155/2016/39727913972791Numerical Study of Damage Modes and Damage Assessment of CFST Columns under Blast LoadingJunhao Zhang0Shiyong Jiang1Bin Chen2Chunhai Li3Hao Qin4Chongqing Key Laboratory of Geomechanics & Geoenvironmental Protection, Logistical Engineering University, Chongqing 401311, ChinaChongqing Key Laboratory of Geomechanics & Geoenvironmental Protection, Logistical Engineering University, Chongqing 401311, ChinaInstitute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, ChinaBeijing Canbao Institute of Architectural Design, Beijing 100850, ChinaBeijing Canbao Institute of Architectural Design, Beijing 100850, ChinaColumns of frame structures are the key load-bearing components and the exterior columns are susceptible to attack in terrorist blasts. When subjected to blast loads, the columns would suffer a loss of bearing capacity to a certain extent due to the damage imparted, which may induce the collapse of them and even cause the progressive collapse of the whole structure. In this paper, the high-fidelity physics-based finite element program LS-DYNA was utilized to investigate the dynamic behavior and damage characteristics of the widely used concrete-filled steel tube (CFST) columns subjected to blast loads. The established numerical model was calibrated with test data in open literatures. Possible damage modes of CFST columns under blast loading were analyzed, and the damage criterion based on the residual axial load capacity of the columns was adopted to assess the damage degree. A parametric study was conducted to investigate the effects of critical parameters such as blast conditions and column details on the damage degree of CFST columns. Based on the numerical simulation data, an empirical equation was proposed to estimate the variation of columns damage degree with the various parameters.http://dx.doi.org/10.1155/2016/3972791 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Junhao Zhang Shiyong Jiang Bin Chen Chunhai Li Hao Qin |
spellingShingle |
Junhao Zhang Shiyong Jiang Bin Chen Chunhai Li Hao Qin Numerical Study of Damage Modes and Damage Assessment of CFST Columns under Blast Loading Shock and Vibration |
author_facet |
Junhao Zhang Shiyong Jiang Bin Chen Chunhai Li Hao Qin |
author_sort |
Junhao Zhang |
title |
Numerical Study of Damage Modes and Damage Assessment of CFST Columns under Blast Loading |
title_short |
Numerical Study of Damage Modes and Damage Assessment of CFST Columns under Blast Loading |
title_full |
Numerical Study of Damage Modes and Damage Assessment of CFST Columns under Blast Loading |
title_fullStr |
Numerical Study of Damage Modes and Damage Assessment of CFST Columns under Blast Loading |
title_full_unstemmed |
Numerical Study of Damage Modes and Damage Assessment of CFST Columns under Blast Loading |
title_sort |
numerical study of damage modes and damage assessment of cfst columns under blast loading |
publisher |
Hindawi Limited |
series |
Shock and Vibration |
issn |
1070-9622 1875-9203 |
publishDate |
2016-01-01 |
description |
Columns of frame structures are the key load-bearing components and the exterior columns are susceptible to attack in terrorist blasts. When subjected to blast loads, the columns would suffer a loss of bearing capacity to a certain extent due to the damage imparted, which may induce the collapse of them and even cause the progressive collapse of the whole structure. In this paper, the high-fidelity physics-based finite element program LS-DYNA was utilized to investigate the dynamic behavior and damage characteristics of the widely used concrete-filled steel tube (CFST) columns subjected to blast loads. The established numerical model was calibrated with test data in open literatures. Possible damage modes of CFST columns under blast loading were analyzed, and the damage criterion based on the residual axial load capacity of the columns was adopted to assess the damage degree. A parametric study was conducted to investigate the effects of critical parameters such as blast conditions and column details on the damage degree of CFST columns. Based on the numerical simulation data, an empirical equation was proposed to estimate the variation of columns damage degree with the various parameters. |
url |
http://dx.doi.org/10.1155/2016/3972791 |
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