|Table of Contents|

Calculation Method of Eccentric Bearing Capacity of RCFST Based on Post-buckling Strength of Panels(PDF)

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

Issue:
2022年05期
Page:
41-52
Research Field:
结构工程
Publishing date:

Info

Title:
Calculation Method of Eccentric Bearing Capacity of RCFST Based on Post-buckling Strength of Panels
Author(s):
WANG Hai-tao1;  LIU Yong-jian1; 2;  SUN Li-peng1
(1. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Research Center of Highway Large Structure Engineering on Safety of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China)
Keywords:
rectangle concrete-filled steel tube;  unilateral restrained plate;  elastic buckling coefficient;  effective width method;  eccentric compress;  large width-to-thickness ratio
PACS:
TU398
DOI:
10.19815/j.jace.2022.06027
Abstract:
In order to accurately calculate the eccentric compress strength of rectangular concrete-filled steel tube(RCFST)short columns with large width-to-thickness ratio, the buckling performance of non-uniformly compressed unilaterally restrained plates was studied by the finite element method, and the calculation formula of the elastic buckling coefficient of this type of plate was given. Based on this, combined with the effective width method, a calculation method of eccentric bearing capacity of RCFST based on post-buckling strength of panels was proposed. In order to verify the accuracy of the calculation method, the test database of RCFST short columns with large width-to-thickness ratio was established, and the new calculation method was compared with the calculation methods of various codes. The results show that the two proposed methods for calculating the eccentric bearing capacity of RCFST with large width-to-thickness ratio have high calculation accuracy, and the calculation results are in good agreement with the test results. The second method can accurately evaluate the eccentric bearing capacity of components, and can be used in the calculation of eccentric bearing capacity of RCFST short columns with large width-to-thickness ratio.

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Last Update: 2022-09-30