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Analysis for Buckling Behavior of Multi-step Rectangular Section Compressive Columns with Arbitrary Number of Side-cracks(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2009年02期
Page:
103-108
Research Field:
Publishing date:
2009-06-20

Info

Title:
Analysis for Buckling Behavior of Multi-step Rectangular Section Compressive Columns with Arbitrary Number of Side-cracks
Author(s):
ZHOU Li
Department of Civil Engineering, Wuyi University, Jiangmen 529020, Guangdong, China
Keywords:
buckling behavior;  arbitrary number of crack;  rectangular section;  multi-step column;  equilibrium path model;  lateral interfering deflection
PACS:
TU375.1
DOI:
-
Abstract:
The governing equation for the post-buckling process of a multi-step rectangular section compressive column with arbitrary number of side-cracks was derived by using Rayleigh-Ritz energy method. Moreover, an analytical model of the equilibrium path of whole buckling process was suggested for the cracked compressive column, where the crack closure and fracture condition were considered. Thus the unreasonable conclusions in some relevant references that cracks had certainly effects on critical load were corrected. As an example, the equilibrium path curves of four states of cracks were obtained numerically for a simply supported three-steps columns. The analytical results show that when an excessive lateral interfering deflection appears, the cracks will have effects on critical load; when the lateral interfering deflection is small, the cracks will have no effects on critical load but have effects on post-buckling process.

References:

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Memo

Memo:
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Last Update: 2009-06-20