A Study on Axial Compression Performance of Concrete-Filled Steel-Tubular Shear Wall with a Multi-Cavity T-Shaped Cross-Section

• Published in: Energies (Basel) Vol. 13; no. 18; p. 4831
• Main Authors: Sun, Hao, Xu, Qingyuan, Yan, Pengfei, Yin, Jianguang, Lou, Ping
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.09.2020
• Subjects: Axial compression; axial compression performance; Compression; Compression tests; Computer applications; Concrete; Construction; Design; Design engineering; enhanced area; finite element analysis; High rise buildings; Limit states; Mechanical properties; multi-cavity steel tube concrete shear wall; non-enhanced area; Seismic engineering; Shear walls; Steel; T shape; Three dimensional analysis
• ISSN: 1996-1073; 1996-1073
• DOI: 10.3390/en13184831

In order to study the axial compression performance of the T-shaped multi-cavity concrete-filled steel tube shear wall, first, three specimens were designed to perform the axial compression test. Then three-dimensional finite element analysis by the ABAQUS software was used to obtain the axial bearing capacity of the shear wall with different parameters. According to the results of the finite element model, the computational diagram in the limit state was obtained. The diagram was simplified into the core concrete in the non-enhanced area that was not constrained by the steel tube and the core concrete in the enhanced area that was uniformly constrained by the steel tube. Finally, a new practical equation for calculating the axial bearing capacity of a multi-cavity concrete-filled steel tubular shear wall was deduced and proposed based on the theory of ultimate equilibrium. The calculation results of the proposed equation were in good agreement with the finite element results, and the proposed equation can be used in practical engineering design.