|Table of Contents|

Effect of Finite Twist on Mechanical Behaviors of Box-section Stub-column Under Axial Compression(PDF)

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

Issue:
2008年01期
Page:
70-75
Research Field:
Publishing date:
2008-03-20

Info

Title:
Effect of Finite Twist on Mechanical Behaviors of Box-section Stub-column Under Axial Compression
Author(s):
CHEN Xing;  CHEN Yi-yi
School of Civil Engineering, Tongji University, Shanghai 200092, China
Keywords:
twisted box-section stub-column;  mechanical behavior;  axial compressive ultimate bearing capacity;  finite element analysis
PACS:
TU338
DOI:
-
Abstract:
In order to study the effect of finite twist on mechanical behaviors of box-section stub-column under axial compression, the elastic buckling analysis and nonlinear analysis were performed. The effects of different twisting angles for stub-column under axial compression on load condition, boundary condition and distribution characteristic of local stresses were indicated. At elastic phase, there were bending constraint and transverse membrane stress on the unloaded edges, and the distribution of stress parallel to loading direction was nonuniform on loaded edges. It was found that axial compressive stiffness and ultimate bearing capacity of box-section stub-column would increase with the increase of relative twisting angle. Finally, different failure modes of large twisting angle were identified, which would change from local buckling to local strength failure. In addition, ultimate bearing capacity of box-section stub-column was also found to be insensitive to small relative twisting angles.

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Last Update: 2008-03-20