摘要
为了延缓传统双钢板混凝土组合剪力墙在地震作用下端部混凝土压溃、刚度显著退化及延性不足等问题的发生,将圆钢管内置在墙体端部,钢管对核心活性粉末混凝土(reactive powder concrete, RPC)进行有效约束,以钢管强度(分别为Q235、Q355、Q390、Q420)、钢管外径(分别为140、152、168、180 mm)、钢板强度(分别为Q235、Q355、Q390、Q420)为控制参数,设计了11个试件。利用ABAQUS软件建立试件的有限元模型,并对类似双钢板混凝土组合剪力墙的仿真结果与试验结果进行对比分析,验证结果的合理性。基于验证结果,对11组试件的承载能力、变形能力、延性、刚度退化能力、耗能能力进行对比分析。结果表明:1)与无钢管试件相比,端部内置钢管可显著提升结构的抗震性能,屈服荷载与峰值荷载分别最大提升了2.18%和2.38%,延性最大提升了7.05%;2)钢板强度的提高对承载能力与延性改善效果显著,屈服荷载与峰值荷载分别最大提升了35.71%和29.15%,延性最大提高了21.94%;3)研究证明了端部内置钢管的双钢板活性粉末混凝土组合剪力墙在提高钢管和钢板强度,以及承载力、延性、初始刚度和耗能能力等方面均有较大提升,抗震性能较优。研究结果可为高层建筑关键抗侧力构件的高延性设计与性能提升提供理论依据。
In order to address issues such as concrete crushing at the ends,significant stiffness degradation,and insufficient ductility in traditional double steel plate concrete composite shear walls under seismic action,round steel tubes were embedded at the ends of the walls.The steel tubes effectively constrained the core reactive powder concrete(RPC).Using steel tube strength(Q235,Q355,Q390,Q420),steel tube outer diameter(140,152,168,180 mm),and steel plate strength(Q235,Q355,Q390,Q420)as control parameters,11 groups of specimens were designed.Finite element models were established using ABAQUS software,and validation analyses were conducted on similar double steel plate concrete(RPC)composite shear walls.The simulation results were compared with the experimental results to verify their rationality.Based on the validation results,the bearing capacity,deformation capacity,ductility,stiffness degradation,and energy dissipation of the 11 specimen groups were comparatively analyzed.The results indicate that:1)Compared with specimens without steel tubes,the end-embedded steel tubes can significantly enhance the seismic performance of the structure,with the yield load and peak load increasing by 2.18%and 2.38%,respectively,and ductility improving by 7.05%.2)Increasing the strength of the steel plates has a significant effect on the improvement of bearing capacity and ductility,with maximum increases in yield load and peak load of 35.71%and 29.15%,respectively,and a maximum ductility improvement of 21.94%.3)The study demonstrates that double steel plate reactive powder concrete composite shear walls with end-embedded steel tubes show considerable improvement in bearing capacity,ductility,initial stiffness,and energy dissipation,as well as superior seismic performance.The findings provide a theoretical basis for the high-ductility design and performance enhancement of key lateral force-resisting components in high-rise buildings.
作者
袁朝庆
张证柱
张浩
李月
计静
YUAN Zhaoqing;ZHANG Zhengzhu;ZHANG Hao;LI Yue;JI Jing(School of Civil Engineering and Architecture,Northeast Petroleum University,Daqing,Heilongjiang 163318,China;Heilongjiang Provincial Key Laboratory of Thermal Utilization and Disaster Reduction of New Energy in Cold Regions,Daqing,Heilongjiang 163318,China)
出处
《河北工业科技》
2026年第1期28-39,共12页
Hebei Journal of Industrial Science and Technology
基金
黑龙江省自然科学基金联合引导项目(LH2024E014)。
关键词
复合结构
端部内置
圆钢管
双钢板活性粉末混凝土
抗震性能
composite structure
embedded end
round steel tube
double steel plate reactive powder concrete
seismic performance
