建筑钢结构进展2025，Vol.27Issue(10)：21-31,11.DOI:10.13969/j.jzgjgjz.20240426001
距厚比对装配式SCCT剪力墙轴压性能影响研究
Research on the Influence of Distance-to-Thickness Ratio on the Axial Compressive Performance of Prefabricated SCCT Shear Walls
摘要
Abstract
In order to study the effect of distance-to-thickness ratio on the axial compressive performance of prefabricated steel-concrete composite tube(SCCT)shear walls,axial compressive tests were conducted on six SCCT shear walls.The failure modes,strain development,bearing capacity and displacement ductility were analyzed.Based on the experimental results and considering the initial imperfections of the steel plate,refined numerical models of SCCT shear walls were established by ABAQUS,and numerical analysis was conducted with the distance-to-thickness ratio as key parameter.The results show that as the distance-to-thickness ratio increases,the buckling severity of the steel plate becomes more pronounced,the axial compressive bearing capacity and stiffness decrease,while the ductility improves for the specimens with the same thickness of steel plate.Based on the orthogonal analysis of the distance-to-thickness ratio with steel plate thickness and material strength,it is recommended that the distance-to-thickness ratio of SCCT shear walls should not exceed 80.When the steel ratio is the same,the bearing capacity and displacement ductility of the wall with circular steel pipe concealed column as boundary restrain form are optimal.The proposed formula can effectively predict the axial compressive bearing capacity of SCCT shear walls by considering the calculated strength of concrete inside and outside the steel tube and the effective width of steel plate at peak load.关键词
轴压试验/距厚比/破坏形态/数值分析/理论计算Key words
axial compressive test/distance-to-thickness ratio/failure mode/numerical analysis/theoretical calculation分类
建筑与水利引用本文复制引用
庞瑞,张健,周超锋,雷红兵,党隆基,秦守婉..距厚比对装配式SCCT剪力墙轴压性能影响研究[J].建筑钢结构进展,2025,27(10):21-31,11.基金项目
国家自然科学基金(52278172),河南工业大学自科创新基金支持计划(2022ZKCJ05),河南省粮油仓储建筑与安全重点实验室开放课题(2021KF-02) （52278172）
