基于钢板弹性屈曲理论的组合墙轴压试验研究  

Axial Compression Experimental Study of Composite Walls Based on Steel Plate Elastic Buckling Theory

作　　者：张有佳[1,2] 李小军[3,2] 

机构地区：[1]东北电力大学建筑工程学院,吉林吉林132012 [2]中国地震局地球物理研究所,北京100081 [3]北京工业大学建筑工程学院,北京100124

出　　处：《应用基础与工程科学学报》2015年第6期1198-1209,共12页Journal of Basic Science and Engineering

基　　金：国家科技重大专项(2011ZX06002-010-16);东北电力大学博士启动基金项目(BSJXM-201421);北京市属高等学校创新团队建设提升计划;国家自然科学基金项目(51508074)

摘　　要：为了研究核电工程涉及的超大厚度钢板混凝土组合墙体的整体性能及钢板的屈曲规律,基于3个不同的钢板弹性屈曲理论分析设计和实施了4个钢板混凝土组合墙轴压试验模型,试验中主要考虑距厚比参数的不同.分析了构件的破坏过程、荷载-位移曲线、钢板的荷载-屈曲曲线.分析结果表明:钢板的屈曲或屈服对试件整体刚度影响不明显;合理的栓钉布设能有效地保证钢板和混凝土协同工作,随着栓钉布设的距厚比变小钢板的屈曲应变和应力有所增大.在试验分析基础上,导出了组合墙体的初始刚度和极限承载力的经验公式,给出了适合组合墙体钢板弹性屈曲应变计算的理论公式.In order to study the buckling law of steel plate reinforced concrete composite walls with super-large thickness for nuclear power engineering, based on three different steel plate elastic buckling theoretical models, 4 specimens of composite walls with steel plates and filled concrete under concentric loads are designed and tested. The stud distance-wall thickness ratio is designed as testing considered parameters. The failure mechanisms of the specimens, load-displacement relations and load-buckling are analyzed. Testing results indicate that the buckling of steel plate is of little influence on the stiffness of composite walls, the suitable layout of studs is effective guarantee of steel plate and concrete work together, and the ultimate bearing capacity of composite walls and buckling strain of the steel plate are increased with the decrease of stud distance-wall thickness ratio. The empirical formulae of ultimate bearing capacity and initial stiffness of composite wall are presented, and a theoretical formula is proposed for elastic buckling of steel plate of composite walls. © 2015, Editorial Board of Journal of Basic Science and Engineering. All right reserved.

关 键 词：钢板混凝土 轴压 模型试验 屈曲分析 极限承载力 

分 类 号：TU398.9[建筑科学—结构工程]