Performance of recycled aggregate concrete-filled high-strength steel tubes under axial compression, tension and torsion

Zhao, Hua-Yang1; Han, Lin-Hai1; Hou, Chao2; Lyu, Wan-Qing1

2023-03-01

10.1016/j.tws.2022.110478

THIN-WALLED STRUCTURES   影响因子和分区

0263-8231

1879-3223

This paper reports the performance of recycled aggregate concrete-filled high-strength steel tubes (RAC-FHST) under axial compression, tension and torsion. A total of 50 specimens, including 22 compressive specimens, 16 tensile ones and 12 torsional ones, were tested. The main parameters varied in the tests were the sectional type, the steel yield strength and the replacement ratio of recycled coarse aggregate (RCA). Analysis on the full-range load-deformation response, the typical failure modes, the ultimate strength, the passive confinement effect and the influence of key parameters were conducted. Results reveal that the use of RCA affected the failure modes especially when subjected to tension or torsion. Meanwhile, the performance of RAC-FHST is improved due to the excellent confinement effect of high-strength steel tube. The finite element modelling method was used to investigate the mechanical property and the effects of important parameters. Simplified models for the calculation of ultimate compressive, tensile and torsional strengths of RAC-FHST were proposed. Based on reliability analysis, the effects of the steel yield strength, the concrete strength and the confinement factor on the reliability index of RAC-FHST were evaluated.

Recycled aggregate concrete-filled high-strength steel tubes (RAC-FHST) Axial compressive behaviour Axial tensile behaviour Torsional behaviour Passive confinement effect

SCI ; EI

英语

其他

National Natural Science Foundation of China (NSFC)[51838008]

Engineering ; Mechanics

Engineering, Civil ; Engineering, Mechanical ; Mechanics

WOS:000915026100001

ELSEVIER SCI LTD

20230113336697

Axial compression ; Compressive strength ; Concrete aggregates ; Recycling ; Reliability analysis ; Tensile strength ; Torsional stress ; Tubular steel structures ; Yield stress

Structural Members and Shapes:408.2 ; Concrete:412 ; Industrial Wastes:452.3 ; Steel:545.3 ; Materials Science:951

ENGINEERING

2-s2.0-85145261007

Web of Science

1.Tsinghua Univ, Dept Civil Engn, Beijing 100084, Peoples R China
2.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen 518055, Peoples R China

Zhao, Hua-Yang,Han, Lin-Hai,Hou, Chao,et al. Performance of recycled aggregate concrete-filled high-strength steel tubes under axial compression, tension and torsion[J]. THIN-WALLED STRUCTURES,2023,184.

Zhao, Hua-Yang,Han, Lin-Hai,Hou, Chao,&Lyu, Wan-Qing.(2023).Performance of recycled aggregate concrete-filled high-strength steel tubes under axial compression, tension and torsion.THIN-WALLED STRUCTURES,184.

Zhao, Hua-Yang,et al."Performance of recycled aggregate concrete-filled high-strength steel tubes under axial compression, tension and torsion".THIN-WALLED STRUCTURES 184(2023).