钢板混凝土组合连续板抗弯承载性能  

Flexural carrying behavior of steel plate-concrete composite continuous slab

作　　者：陈玉立 Sharmila Raut[2] 刘路 李明鸿[1,2] 宗周红[1,2] Chen Yuli;Sharmila Raut;Liu Lu;Li Minghong;Zong Zhouhong(Engineering Research Center of Safety and Protection of Explosion and Impact of Ministry of Education,Southeast University,Nanjing 211189,China;School of Civil Engineering,Southeast University,Nanjing 211189,China)

机构地区：[1]东南大学爆炸安全防护教育部工程研究中心,南京211189 [2]东南大学土木工程学院,南京211189

出　　处：《东南大学学报（自然科学版）》2022年第4期676-683,共8页Journal of Southeast University：Natural Science Edition

基　　金：国家自然科学基金资助项目(52178462).

摘　　要：为研究钢板混凝土组合连续板的抗弯承载能力及破坏模式,对2块不同抗剪连接程度的钢板混凝土组合连续板进行了抗弯承载力试验和数值模拟分析.首先,对钢板混凝土组合连续板进行了四点对称加载的抗弯破坏性试验;然后,采用有限元软件ABAQUS对加载全过程进行数值模拟,分析了混凝土板厚度、底钢板厚度等参数对组合连续板的抗弯承载性能影响.结果表明:钢板混凝土组合连续板首先在中支座负弯矩区产生裂缝,然后在跨内发生弯剪破坏;钢板与混凝土界面的抗剪连接程度从100%减小到66.7%,连续组合板的极限荷载降低42.1%,但其变形延性性能略有增加;增加混凝土板厚度和底钢板厚度能不同程度地增大组合连续板的抗弯极限承载力.To study the flexural carrying capacity and failure modes of steel plate-concrete composite continuous slabs,flexural tests and numerical simulation analysis of two composite continuous slabs with different shear connection degrees were conducted.Firstly,the flexural failure experiments of two composite continuous slabs under four-point symmetrical loading were carried out.Then,the finite element software ABAQUS was used to simulate the whole loading process of these composite continuous slabs.The influences of the concrete layer thickness and the bottom steel plate thickness on the flexural carrying capacity of the composite continuous slabs were analyzed.The results indicate that the steel-concrete composite continuous slab first cracks in the negative moment area at the middle support,and then the bending-shear failure occurs in the span.The shear connection between steel plate and concrete decreases from 100%to 66.7%,and the ultimate loading capacity of composite continuous slabs decreases by 42.1%,but their deformation ductility increases slightly.Increasing the thickness of the concrete layer and the bottom plate can improve the flexural ultimate carrying capacity of the composite continuous slabs in different degrees.

关 键 词：钢板混凝土组合连续板 抗弯试验 非线性数值分析 抗弯承载能力 

分 类 号：TU398.1[建筑科学—结构工程]