Journal:Structures

Abstract:The mechanical behavior of seawater sea sand concrete (SSC)-filled bimetallic tube (SSCFBT) stub columns under monotonic axial compression is systematically investigated through a combination of experimental testing and finite element analysis (FEA). The main test parameters considered included the strength of SSC and the cross sectional diameter of the bimetallic tube. The research findings reveal that the SSCFBT columns exhibit a ductile failure process under monotonic compression, demonstrating a favorable load-carrying capacity. The failure mode is predominantly characterized by local buckling in the bimetallic tube, with a separation phenomenon observed at the tube bulge. The overall behavior of SSCFBT members parallels that of conventional concrete filled steel tubes, and the corresponding axial compressive strength is found to be positively correlated with the strength of the SSC. The study concludes with the verification of available formulas to predict the compressive strength of SSCFBT members, thereby assessing the feasibility of this composite member for practical engineering applications.

Indexed by:Journal paper

Page Number:2024,69:107541

Translation or Not:no

Included Journals:SCI

First Author:何美芳

Co-author:汤钜荣,林嘉宏

Correspondence Author:叶勇