Industrial Construction. 2014, (01) Core

ANALYSIS OF BEARING CAPACITY OF DOUBLE COLD-FORMED THIN-WALLED C STEEL BACK-TO-BACK COMPOSITE COLUMN WITH PLATE COUPLEDChinese Full Text

Chen Ming;Lu Wenwen;Liu Kai;School of Civil and Environment Engineering,University of Science ＆ Technology Beijing;School of Archtecture and Civil Engineering,Inner Mongolia Science ＆ Technology University;

Abstract: According to the composite column of double cold-formed thin-walled C steel back to back connected with gusset plate,the test and finite element analysis were carried out to study the stability bearing capacity and failure modes of the specimen under eccentric loading. The elements such as slenderness ratio,gusset plate thickness and gusset plate spacing were discussed,which produced the impacts to composite column’s bearing capacity,the relationship between stiffness and axial loading,and the curves of M-φ of eccentricity. The results revealed that before the overall instability the local-buckling was occurred,the failure modes were belonging to the in-plane-flexural buckling. The major factors are slenderness ratio,eccentricity and gusset plate spacing which effected the mechanical behavior,while the gusset plate thickness has no obvious impact. In the end,the calculation method of the bearing capacity of the cold-formed thin-walled column was compared with that in "Technical Code of Cold-Formed Thin-Walled Section Steel Structures"（ GB 50018—2002）,some suggestions based on the type of composite section column calculation were put forward,and the bearing capacity correction coefficient of the steel composite columns was given.

Keywords：

C steel composite column; ultimate bearing capacity; experimental research; finite element analysis; effective width method correction coefficient;

DOI：
10.13204/j.gyjz201401027
Series：
Subject：
Classification Code：
TU392

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ANALYSIS OF BEARING CAPACITY OF DOUBLE COLD-FORMED THIN-WALLED C STEEL BACK-TO-BACK COMPOSITE COLUMN WITH PLATE COUPLEDChinese Full Text

Chen Ming;Lu Wenwen;Liu Kai;School of Civil and Environment Engineering,University of Science ＆ Technology Beijing;School of Archtecture and Civil Engineering,Inner Mongolia Science ＆ Technology University;

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