|Table of Contents|

Finite Element Analysis of Cold-formed Thin-walled Steel Three Open Limbs Built-up Columns Under Axial Compression(PDF)

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

Issue:
2011年03期
Page:
119-126
Research Field:
Publishing date:
2011-09-20

Info

Title:
Finite Element Analysis of Cold-formed Thin-walled Steel Three Open Limbs Built-up Columns Under Axial Compression
Author(s):
LIU Xiang-bin1;  ZHOU Tian-hua2;  NIE Shao-feng2;  WU Han-heng2
1. Infrastructure Projects Office, Chang'an University, Xi'an 710064, Shaanxi, China; 2. School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China
Keywords:
cold-formed thin-walled steel;  built-up column;  ultimate bearing capacity;  nonlinear finite element;  axial compression performance
PACS:
TU392.1
DOI:
-
Abstract:
The finite element model involving materials nonlinearity, geometric nonlinearity and contact nonlinearity was established, the influences of slenderness ratios, screw connection spacings, maximum width-thickness ratios on cold-formed thin-walled steel three open limbs built-up columns under axial compression were analyzed by using ANSYS finite element program. Results show that the slenderness ratio has great influence on the bearing capacity of axial compression and the axial compression performance for class A, B section built-up columns, with the increase of the column slenderness ratio, the ultimate bearing capacity gradually decreases. For two class section built-up columns, when screw connection spacing has arranged 450,300,150 mm, the ultimate bearing capacity of axial compression and the rigidity are little affected. For the three different lengths to the two class section built-up columns, as different thicknesses of the basic component plates cause different width-thickness ratios of the section, the ultimate bearing capacity of axial compression and the rigidity are obviously affected. When length and thickness of class A, B section built-up columns are same, and the basic component web height is increased from 89 mm to 140 mm, the ultimate bearing capacity of axial compression is not obviously improved.

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Last Update: 2011-09-20