STUDY ON DESIGN APPROACH OF THE CIRCULAR CONCRETE FILLED STAINLESS STEEL TUBE UNDER AXIAL COMPRESSION

CHEN Xin; LIAO Feiyu; LIN Zhiping; REN Menglu

doi:10.13204/j.gyjzG20011705

Volume 50 Issue 11

Mar. 2021

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CHEN Xin, LIAO Feiyu, LIN Zhiping, REN Menglu. STUDY ON DESIGN APPROACH OF THE CIRCULAR CONCRETE FILLED STAINLESS STEEL TUBE UNDER AXIAL COMPRESSION[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(11): 137-144,152. doi: 10.13204/j.gyjzG20011705

Citation:

CHEN Xin, LIAO Feiyu, LIN Zhiping, REN Menglu. STUDY ON DESIGN APPROACH OF THE CIRCULAR CONCRETE FILLED STAINLESS STEEL TUBE UNDER AXIAL COMPRESSION[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(11): 137-144,152. doi: 10.13204/j.gyjzG20011705

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STUDY ON DESIGN APPROACH OF THE CIRCULAR CONCRETE FILLED STAINLESS STEEL TUBE UNDER AXIAL COMPRESSION

doi: 10.13204/j.gyjzG20011705

1. College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China;
2. Fujian Expressway Group Co., Ltd., Fuzhou 350001, China

Received Date: 2020-01-17
Available Online: 2021-03-31

Abstract

Abstract

The experimental data of circular concrete filled stainless steel tube (CFSST) were collected and compared with the calculation values of current normal concrete filled steel tube codes. The results showed that the calculation values of current codes were more conservative. Therefore, it is necessary to provide a simplified calculation formula for the bearing capacity of CFSST. In view of this, the finite element (FE) model of CFSST member was established, and the parameters affecting the axial compression bearing capacity of CFSST were analyzed by using the FE model. The results showed that the axial compression strength bearing capacity increased with the increase of stainless steel yield strength, concrete strength and steel ratio. Based on the regression of the simplified calculation formula of the strength capacity of CFSST under axial compression, the simplified calculation formula of the stability bearing capacity of CFSST under axial compression was obtained. The simplified formula proposed in this paper was more consistent with the test data than the current codes.

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References(26)

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