Theoretical model for CFRP-confined spontaneous combustion gangue coarse aggregate concrete-filled steel tube stub columns under axial compression

被引：3
|
作者：
Wang, Jinli [2 ,3 ]
Chen, Jialong [1 ]
Liu, Min [1 ]
机构：
[1] Liaoning Tech Univ, Sch Civil Engn, Fuxin 123000, Peoples R China
[2] Key Lab Coal Gangue Resource Utilizat & Energy Sav, Fuxin 123000, Peoples R China
[3] Engn Res Ctr Resource Utilizat Coal Based Solid Wa, Fuxin 123000, Peoples R China
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2024年 / 415卷
关键词：
CFRP; Concrete -filled steel tube; Spontaneous combustion gangue coarse aggregate; Axial compression tests; Stress -strain model; STRESS-STRAIN MODEL; COAL GANGUE; MECHANICAL-PROPERTIES; BEHAVIOR; CAPACITY;
D O I：
10.1016/j.conbuildmat.2024.135113
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
To investigate the axial compressive behavior of carbon fiber reinforced polymer (CFRP)-confined spontaneous combustion gangue coarse aggregate (SCGCA) concrete-filled steel tube (CFST) stub columns, 18 CFRP-confined SCGCA CFST specimens and 9 SCGCA concrete specimens were tested with the parameters of SCGCA replacement ratio and CFRP jacket stiffness. The results revealed that the dual confinement provided by CFRP jackets and steel tubes significantly enhanced the strength and ductility of SCGCA concrete, while their confinement effectiveness reduced with the increase of the replacement ratio. Furthermore, an existing theoretical model for CFRP-confined natural coarse aggregate (NCA) CFST was modified to apply for CFRP-confined SCGCA CFST.
引用
收藏
页数：15
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