EXPERIMENTAL RESEARCH AND NUMERICAL ANALYSIS OF THE BEARING CAPACITY OF CONCRETE-FILLED STEEL TUBE (CFST) WITH DEFECTS

HAO Zhaofeng; ZHANG Rongling; MA Lina; ALAN Kwan; NING Guixia; LI Zhiyang

doi:10.13204/j.gyjzG201908130009

Volume 50 Issue 8

Oct. 2020

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HAO Zhaofeng, ZHANG Rongling, MA Lina, ALAN Kwan, NING Guixia, LI Zhiyang. EXPERIMENTAL RESEARCH AND NUMERICAL ANALYSIS OF THE BEARING CAPACITY OF CONCRETE-FILLED STEEL TUBE (CFST) WITH DEFECTS[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(8): 138-144,53. doi: 10.13204/j.gyjzG201908130009

Citation:

HAO Zhaofeng, ZHANG Rongling, MA Lina, ALAN Kwan, NING Guixia, LI Zhiyang. EXPERIMENTAL RESEARCH AND NUMERICAL ANALYSIS OF THE BEARING CAPACITY OF CONCRETE-FILLED STEEL TUBE (CFST) WITH DEFECTS[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(8): 138-144,53. doi: 10.13204/j.gyjzG201908130009

Citation:

HAO Zhaofeng, ZHANG Rongling, MA Lina, ALAN Kwan, NING Guixia, LI Zhiyang. EXPERIMENTAL RESEARCH AND NUMERICAL ANALYSIS OF THE BEARING CAPACITY OF CONCRETE-FILLED STEEL TUBE (CFST) WITH DEFECTS[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(8): 138-144,53. doi: 10.13204/j.gyjzG201908130009

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EXPERIMENTAL RESEARCH AND NUMERICAL ANALYSIS OF THE BEARING CAPACITY OF CONCRETE-FILLED STEEL TUBE (CFST) WITH DEFECTS

doi: 10.13204/j.gyjzG201908130009

1. School of Civil Engineering, Lanzhou Jiangtong University, Lanzhou 730070, China;
2. National and Provincial Joint Engineering Laboratory of Road & Bridge Disaster Prevention and Control, Lanzhou Jiaotong University, Lanzhou 730070, China;
3. Cardiff School of Engineering, Cardiff University, Cardiff CF243 AA, UK;
4. Traffic Survey and Design Institute of Gansu Henglu Co., Ltd., Lanzhou 730070, China

Received Date: 2019-08-13

Abstract

Abstract

In order to study the compressive bearing capacity of concrete-filled steel tube (CFST) members with defects, the bearing capacity tests of 9 groups of CFST defective members were carried out, and the change curve of axial deformation of CFST defective members with load strength was obtained. The results showed that the defect had a great influence on the compressive bearing capacity of concrete-filled steel tube specimens, compared with non-defective components, the bearing capacity loss of defective components was as low as 14% and as high as 59%. With the same defect location, the bearing capacity loss of concrete-filled steel tube members was proportional to the defect ratio. The loss of bearing capacity caused by edge defect was greater than that caused by central defect. Through the finite element software, the simulation model of concrete-filled steel tube (CFST) was established, the structure type was expanded, and the accuracy of the test results was verified.
- concrete-filled steel tube,
- defects,
- compressive bearing capacity,
- finite element

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