建筑结构学报2025，Vol.46Issue(4)：44-56,13.DOI:10.14006/j.jzjgxb.2024.0179
装配式钢管箍芯增强组合剪力墙抗震性能试验研究
Experimental study on seismic performance of precast concrete composite shear walls with steel-tube spiral-stirrup high-strength concrete cores
摘要
Abstract
To verify the reliability of assembly connection enhanced by thin-walled steel-tube spiral-stirrup confined high-strength concrete cores(TSSHCs),and to investigate the seismic performance and force transmission path in the prefabricated TSSHC reinforced composite shear wall(PCCS shear wall)with high axial compression ratio,six PCCS shear wall specimens with axial compression ratio of 0.33 were designed for quasi-static tests,considering the differences of the number of TSSHCs and longitudinal bars in the steel-tube,the spacing of spiral-stirrup,and the concrete strength of the joint grouting layer.The results show that the TSSHC inhibits the rapid degradation of the horizontal connection performance of the PCCS shear walls.Multiple force transmission paths are developed successively in the joint grouting layer,and cracks are developed and distributed in both the joint grouting layer and the prefabricated concrete wall.The TSSHC plays a reliable role in connecting different parts,and the assembly integrity is satisfactory.The PCCS shear walls show a bending-shear composite failure mode.The TSSHC restricts the development of shear oblique cracks.Vertical fracture zone develops in the wall,and the damage path is regular.Under high axial compression ratio,the hysteresis curve of PCCS shear walls is full,the skeleton curve has a gentle bearing capacity decline section after peak load,and the plastic deformation ability and ductility are sufficient.The average limit displacement angle is 1/67,and the average displacement ductility coefficient is 4.20.The number of TSSHCs is the main factor affecting the assembly performance and seismic redundancy.Based on the existing standard method and test results,a calculation model of the shear capacity of PCCS shear walls under high axial compression ratio was established,and the difference between the calculated value and the test value is less than 6.5％.关键词
预制混凝土组合剪力墙/钢管混凝土/水平连接/拟静力试验/抗震性能Key words
precast concrete composite wall/concrete-filled steel tube/horizontal connection/quasi-static test/seismic performance分类
建筑与水利引用本文复制引用
江毅,梁韬,周靖..装配式钢管箍芯增强组合剪力墙抗震性能试验研究[J].建筑结构学报,2025,46(4):44-56,13.基金项目
国家自然科学基金项目(52378512),广东省自然科学基金项目(2022A1515010878),华南理工大学建筑设计院有限公司科研项目(x2jz-D8220300). （52378512）
