钢管混凝土板柱结构剪力环节点冲切试验

Punching Shear Experiments of Annulus Joints of Concrete filled Steel Tube Column Slab Structures

介绍了钢管混凝土板柱结构节点的试验结果、受力性能和变形性能．探讨了剪力环尺寸和刚度、预应力混凝土及主筋是否穿过核心区对冲切性能的影响．

The punching shear experiment results of shear annulus joints of concrete filled steel tube column slab structure are introduced, and their mechanics behavior and deformation property are also described. The factors, such as annulus dimension and stiffness, prestressed concrete and whether the main steel bars in slab crossing the tube or not, affecting joint structure performance are discussed, respectively. The calculation mode of punching shear bearing capacity is presented.