连接件对钢板混凝土组合墙轴压性能影响试验  

Experimental Research on Effect of Shear Connectors on Mechanical Properties of Steel-Plate Concrete Composite Walls Under Axial Compression

作　　者：刘阳冰[1] 王爽[1] 刘晶波[2] 曹天峰 LIU Yangbing;WANG Shuang;LIU Jingbo;CAO Tianfeng(College of Civil Engineering,Nanyang Institute of Technology,Nanyang 473004,China;Department of Civil Engineering,Tsinghua University,Beijing 100084,China;College of Civil Engineering,Chongqing University,Chongqing 400045,China)

机构地区：[1]南阳理工学院土木工程学院,河南南阳473004 [2]清华大学土木工程系,北京100084 [3]重庆大学土木工程学院,重庆400045

出　　处：《工业建筑》2022年第4期98-106,共9页Industrial Construction

基　　金：大型先进压水堆核电站国家科技重大专项CAP1400安全评审技术及独立验证试验(2010ZX06002-10);河南省高等学校重点科研资助项目(16B560005)。

摘　　要：为研究连接件形式不同对钢板混凝土组合墙受力和变形性能的影响,进行了4个双钢板混凝土组合墙试件(栓钉和对拉螺栓比例不同)的轴压试验和有限元数值模拟。结果表明:4个试件均为脆性破坏,除试件DSW-12外,破坏过程基本相同,均为外钢板屈服、面外局部屈曲、形成贯通屈曲,混凝土压碎,侧焊缝拉开,试件丧失承载力。钢板首次出现屈服或面外局部屈曲时对试件整体刚度影响不大。对拉螺栓的相对比例对双钢板混凝土组合墙的轴向受压刚度、承载力、钢板的局部屈曲荷载和破坏形态影响不大;但对面外局部变形有抑制作用。相同截面、距厚比试件,采用对拉螺栓的比例越高,破坏时钢板局部屈曲变形越小。The effect of shear connectors on mechanical and deformation properties of steel-plate concrete composite walls subjected to axial compressive loading was studied through experiment and finite element numerical simulation.The testing program involved four composite wall specimens with different ratios(the number of studs-to-tie bars).The results showed that the four walls failed in a similar brittle failure mode characterized by compressive yielding of the steel plates,then outward local buckling of the steel plates,crushing of inner concrete,and failure of the weld,except for DSW-12.The yielding and outward local buckling of the steel plates had little influence on the stiffness of the walls.The relative proportion of the tie bar had little effect on the axial compressive stiffness,bearing capacity,local buckling load of steel plate,and failure mode,but the tie bar could restrain outward local deformation.With the same section and distance-to-thickness ratio,the higher the proportion of the tie bar,the smaller the outward local buckling deformation of the steel plate.

关 键 词：抗剪连接件 钢板混凝土组合墙 屈曲 轴压性能 

分 类 号：TU398.9[建筑科学—结构工程]