Compressive behavior of glulam columns with initial cracks under eccentric loads

Abstract This paper investigates the mechanical performance of longitudinally cracked glulam columns under eccentric compression loads. Experimental investigation was conducted to explore the influence of initial cracks on the failure modes and load bearing capacity of glulam columns. Two different...

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Main Authors:	Jing Zhang, Minjuan He, Zheng Li
Format:	Article
Language:	English
Published:	Springer 2018-01-01
Series:	International Journal of Advanced Structural Engineering
Subjects:	Glulam columns Eccentric load Initial cracks Numerical model
Online Access:	http://link.springer.com/article/10.1007/s40091-018-0181-5

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spelling	doaj-art-fe1678b5a6f748008679f8affc9d5f762018-08-16T01:27:43ZengSpringerInternational Journal of Advanced Structural Engineering2008-35562008-66952018-01-0110211111910.1007/s40091-018-0181-5Compressive behavior of glulam columns with initial cracks under eccentric loadsJing Zhang0Minjuan He1Zheng Li2Department of Structural Engineering, Tongji Univ.Department of Structural Engineering, Tongji Univ.Department of Structural Engineering, Tongji Univ.Abstract This paper investigates the mechanical performance of longitudinally cracked glulam columns under eccentric compression loads. Experimental investigation was conducted to explore the influence of initial cracks on the failure modes and load bearing capacity of glulam columns. Two different crack patterns named DC and IC, and two column lengths (i.e. 600 and 1100 mm) were considered in the experiments. It was indicated that these two crack patterns reduced the capacity of slender glulam columns and the difference of failure modes was observed between glulam columns with and without initial cracks. Further, a numerical model was developed and validated by the test results. With the application of cohesive zone material model, the propagation of initial cracks could be considered in the numerical modeling. A parametric study was carried out by the verified model and the influence of crack lengths and crack locations was further investigated. From the numerical analysis, it was found that through cracks reduced the capacity of glulam columns significantly. Also, crack location impacts the capacity of glulam columns and the extent of impact relates to the slenderness ratio of the columns, while cracks with different lengths have similar influence on the capacity of columns.http://link.springer.com/article/10.1007/s40091-018-0181-5Glulam columnsEccentric loadInitial cracksNumerical model
institution	Open Data Bank
collection	Open Access Journals
building	Directory of Open Access Journals
language	English
format	Article
author	Jing Zhang Minjuan He Zheng Li
spellingShingle	Jing Zhang Minjuan He Zheng Li Compressive behavior of glulam columns with initial cracks under eccentric loads International Journal of Advanced Structural Engineering Glulam columns Eccentric load Initial cracks Numerical model
author_facet	Jing Zhang Minjuan He Zheng Li
author_sort	Jing Zhang
title	Compressive behavior of glulam columns with initial cracks under eccentric loads
title_short	Compressive behavior of glulam columns with initial cracks under eccentric loads
title_full	Compressive behavior of glulam columns with initial cracks under eccentric loads
title_fullStr	Compressive behavior of glulam columns with initial cracks under eccentric loads
title_full_unstemmed	Compressive behavior of glulam columns with initial cracks under eccentric loads
title_sort	compressive behavior of glulam columns with initial cracks under eccentric loads
publisher	Springer
series	International Journal of Advanced Structural Engineering
issn	2008-3556 2008-6695
publishDate	2018-01-01
description	Abstract This paper investigates the mechanical performance of longitudinally cracked glulam columns under eccentric compression loads. Experimental investigation was conducted to explore the influence of initial cracks on the failure modes and load bearing capacity of glulam columns. Two different crack patterns named DC and IC, and two column lengths (i.e. 600 and 1100 mm) were considered in the experiments. It was indicated that these two crack patterns reduced the capacity of slender glulam columns and the difference of failure modes was observed between glulam columns with and without initial cracks. Further, a numerical model was developed and validated by the test results. With the application of cohesive zone material model, the propagation of initial cracks could be considered in the numerical modeling. A parametric study was carried out by the verified model and the influence of crack lengths and crack locations was further investigated. From the numerical analysis, it was found that through cracks reduced the capacity of glulam columns significantly. Also, crack location impacts the capacity of glulam columns and the extent of impact relates to the slenderness ratio of the columns, while cracks with different lengths have similar influence on the capacity of columns.
topic	Glulam columns Eccentric load Initial cracks Numerical model
url	http://link.springer.com/article/10.1007/s40091-018-0181-5
_version_	1612694754022129664

Compressive behavior of glulam columns with initial cracks under eccentric loads

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