冻融循环下相变混凝土剪力墙抗震性能研究  

Seismic Performance of Phase Change Concrete Shear Wall Under Freeze-thaw Cycle

作　　者：张宇 恽定康 邱菊[1] ZHANG Yu;YUN Dingkang;QIU Ju(School of Civil Engineering and Architecture,Northeast Petroleum University,Daqing 163318,China)

机构地区：[1]东北石油大学土木建筑工程学院,黑龙江大庆163318

出　　处：《徐州工程学院学报（自然科学版）》2023年第1期42-49,共8页Journal of Xuzhou Institute of Technology(Natural Sciences Edition)

基　　金：东北石油大学人才引进科研启动经费资助项目(1305021827)。

摘　　要：该文通过建立相变储能混凝土冻融损伤本构模型,获取受损后混凝土重要性能参数,并将其代入剪力墙计算模型,进行墙体抗震性能分析.结果表明:添加相变材料对混凝土剪力墙的承载能力和刚度略有折减,但提高了墙体的变形能力;相变材料减轻了冻融循环对混凝土强度的影响,使得冻融循环后相变混凝土剪力墙的承载能力和刚度高于普通混凝土剪力墙,展现出良好的延性和耗能能力.In this paper,the freeze-thaw damage constitutive model of phase change energy-storage concrete was established,and the important performance parameters of damaged concrete were obtained,which were substituted into the calculation model of shear wall to analyze the seismic performance of the wall.The results showed that the loading capacity and stiffness of the concrete shear wall were slightly reduced by adding phase change materials,but the deformation capacity of the wall was improved.The phase change materials reduced the influence of freeze-thaw cycle on concrete strength,which made the bearing capacity and stiffness of phase change concrete shear wall after freeze-thaw cycle higher than that of ordinary concrete shear wall,and showed good ductility and energy dissipation capacity.

关 键 词：剪力墙 相变储能混凝土 冻融循环 低周往复荷载 抗震性能 

分 类 号：TU398.2[建筑科学—结构工程]