钢-混凝土组合板的弹性弯曲及稳定性分析  

ELASTIC BENDING AND STABILITY OF STEEL-CONCRETE COMPOSITE PLATE

作　　者：聂建国[1] 李法雄[1] 

机构地区：[1]清华大学土木工程系,北京100084

出　　处：《工程力学》2009年第10期59-66,78,共9页Engineering Mechanics

基　　金：国家高新技术研究发展专项(863计划)项目(2006AA11Z120)

摘　　要：通过在钢与混凝土之间设置假想的剪切薄层,依靠剪切层的剪切变形考虑钢板与混凝土板之间的相对滑移,建立考虑滑移效应的钢-混凝土组合板模型,并推导出四边简支组合板在均布横向荷载作用下的弯曲变形和单向压缩作用下的弹性稳定解析解。通过有限元分析,验证了模型和解析解的正确性和适用性。参数分析表明:当χ5时,四边简支组合板弹性屈曲荷载接近于钢板和混凝土板各自的弹性屈曲荷载之和,可近似不考虑组合板中钢板与混凝土板的共同作用。An analysis method for steel-concrete composite plate is presented, with stud-slip effect considered. A hypothetical thin shear-layer between steel and concrete slabs is employed to model the shear deformation. Analytical solution for deformation of composite plate under uniform loading and elastic buckling critical-load of composite plate under axial compression are derived. The model and the solution are then validated by means of finite element analysis. A parametric study demonstrates that, for simply supported rectangular composite plate, if X≥5, the critical-load can be predicted by simply adding the contributes of steel and concrete slabs, and the interaction between them can be ignored.

关 键 词：钢-混凝土组合板 滑移效应 弹性弯曲 稳定性 临界屈曲荷载 

分 类 号：TU313.1[建筑科学—结构工程] TU398.9