|Table of Contents|

Local Buckling Analysis of Web of Continuous Steel-concrete Composite Beam(PDF)

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

Issue:
2009年03期
Page:
27-31
Research Field:
Publishing date:
2009-09-20

Info

Title:
Local Buckling Analysis of Web of Continuous Steel-concrete Composite Beam
Author(s):
JIANG Li-zhong1;  ZENG Li-juan1;  SUN Lin-lin2
1. School of Civil Engineering and Architecture, Central South University, Changsha 410075, Hunan, China; 2. Jiangsu Transportation Research Institute Co., Ltd, Nanjing 210017, Jiangsu, China
Keywords:
continuous steel-concrete composite beam;  bearing capacity of stability;  buckling model;  local buckling;  height to thickness ratio
PACS:
TU398
DOI:
-
Abstract:
The stability of steel web in negative moment area of the continuous composite beam was studied. The mechanical behaviors of steel web in negative moment area under the load of bending, axial pressure and shear were analyzed, and a simplified model for calculating the local stability of web of composite beam under different loads was proposed, and formulas were also formed for calculating critical buckling stress under the load of non-uniform compression, shear and complicated stress loads of bending and shear. The elastic buckling factors under the load of non-uniform compression and shear were separately calculated. The elastic buckling factor under the complicated stress load of bending and shear was calculated according to interaction equation of eccentric compression and shear. Based on results of the buckling analysis, the limiting height to thickness ratio was also determined for webs without stiffening ribs in the elastic stage based on the critical buckling load. The results show that the method is more reasonable for determining height to thickness ratio of steel web of beam, and the calculating process is simple, the result is on safe side.

References:

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Memo

Memo:
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Last Update: 2009-09-20