|Table of Contents|

Confirm Method of Equivalent Bending Rigidity of Castellated Beams(PDF)

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

Issue:
2008年01期
Page:
102-
Research Field:
Publishing date:
2008-03-20

Info

Title:
Confirm Method of Equivalent Bending Rigidity of Castellated Beams
Author(s):
ZHOU Chao-yang;  ZHOU Yun-feng
School of Civil Engineering and Architecture, Central South University, Changsha 410075, Hunan, China
Keywords:
castellated beam;  equivalent bending rigidity;  algorithm of rigidity;  expression of rigidity;  hexagonal perforation;  circular hole
PACS:
TU392
DOI:
-
Abstract:
Through analyzing the different opening castellated beams, a method was put forward to determine the equivalent bending stiffness of castellated beams, which was reversely derived from the results of finite element analysis(FEA)for castellated beams under pure bending and the relationships both between deflection and stiffness and between moment and curvature in classical mechanics. It was simple, accurate, economical, and high efficient. A rational formulation was presented to express the equivalent bending stiffness, in which the reduction factor of stiffness for web with openings was obtained by finite element analysis and the method above-mentioned. Furthermore, semi-theory and semi-empirical computing equations were proposed to calculate the factor for castellated beams with hexagonal perforation and circular holes, common shapes in practice. The equivalent bending stiffness of castellated beams can be readily reckoned by using the formula.

References:

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Memo

Memo:
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Last Update: 2008-03-20