叠合板式剪力墙-楼板节点受力性能试验分析  

Experimental Analysis of Mechanical Performance of Cross-shaped Laminated Plate Shear Wall-slab Joint

作　　者：侯荣程 常红亮 赵超 HOU Rongcheng;CHANG Hongliang;ZHAO Chao(School of Civil Engineering,Anhui Jianzhu University,Hefei 230601,China)

机构地区：[1]安徽建筑大学土木工程学院,安徽合肥230601

出　　处：《兰州工业学院学报》2023年第1期36-40,共5页Journal of Lanzhou Institute of Technology

基　　金：安徽省住房城乡建设科学技术计划项目(2021-YF20)。

摘　　要：为研究叠合板式剪力墙-楼板节点处及楼板的受力性能和损伤机制,对1块现浇试件和1块叠合墙-叠合楼板试件在均布荷载和区域荷载2种荷载情况下进行静力试验,根据试验数据对比分析了试件的各项受力性能指标。结果表明:2个试件裂缝分布走势相似,最后均为楼板受弯破坏;现浇试件的楼板于外伸楼板根部破坏,叠合试件于根部外10 cm处破坏,出现塑性铰外移现象,节点部位混凝土应变较小,节点区均未发生破坏;叠合试件的屈服荷载及峰值荷载对比现浇试件均有所提升;叠合试件楼板初始刚度与现浇试件基本一致,屈服后刚度退化速率略小于现浇试件,但在加载后期刚度突降并先于现浇试件破坏;均布加载方式更有益于叠合板式剪力墙-楼板节点受力。In order to study the stress performance and damage mechanism of superposed shear wall-floor slab joint,the static tests of one cast-in-situ specimen and one composite wall-slab specimen under uniform load and regional load are carried out.According to the experimental data,the mechanical properties of the specimens are compared and analyzed.The results show that the crack distribution trends of the two specimens is similar,and the floor is finally damaged by bending.The ultimate failure of the cast-in-place specimen occurs at the root of the extended floor and composite wall-slab specimen at 10 cm outside the root.The plastic hinge moves outward when the ultimate failure of the cast-in-place specimen occurs.Concrete strain at the joint site is small,and no damage occurs in the joint area.The yield load and peak load of composite specimens are improved compared with cast-in-place specimens.The initial stiffness of the composite specimen is small basically the same as that of the cast-in-place specimens,and the stiffness degradation rate after yielding is slightly smaller than that of the cast-in-place specimen.But the stiffness of the composite specimen decreases sharply at the later stage of loading and the composite specimen fails before the cast-in-place specimen.The uniform loading mode is beneficial to the superposed shear wall-floor slab joint.

关 键 词：叠合板式剪力墙 剪力墙-楼板节点 力学性能 

分 类 号：TU375[建筑科学—结构工程]