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为研究密柱框筒结构中全装配式桁架梁组合楼盖的平面内刚性性能,设计并制作了4个单筒结构的1/3缩尺结构模型(单层、两层框筒模型各两个),通过楼盖平面内单向加载试验,研究了该类装配式楼盖在平行于及垂直于拼装板缝方向受力时楼盖平面内受力变形性能、裂缝开展形态、水平荷载的分配与传递性能、楼盖的平面内刚度及整体变形性能。研究结果表明:在相应于7度罕遇地震的楼层水平力作用下,该组合楼盖在平行于及垂直于拼装板缝方向受力时均处于弹性工作状态;楼盖在平行于拼装板缝方向受力时,受力变形性能与深梁类似,而在垂直于拼装板缝方向受力时,楼盖平面内呈各装配板单元的各自受弯状态,楼盖体系在平行于拼装板缝方向受力时整体性较好,而在垂直于拼装板缝方向受力时整体性一般。
In order to study the in-plane rigidity of the fully assembled truss beams in the frame-column structure, four 1/3-scale models of single-tube structure were designed and fabricated Through the unidirectional loading test in the plane of the floor, the force and deformation performance, crack development morphology and horizontal load in the plane of the floor were studied when the assembly type floor was stressed parallel and perpendicular to the assembled slab. Distribution and transmission performance, the in-plane stiffness of the floor and the overall deformation performance. The results show that the composite floor is in elastic working state when it is parallel to and perpendicular to the direction of assembling slab joint under the horizontal force of floor corresponding to a rare earthquake of 7 degrees. When the force is applied in the direction, the deformation behavior of the deep beam is similar to that of the deep beam. When the load is perpendicular to the direction of the assembling suture, the respective bending state of each assembly plate unit in the floor of the floor is bent. When the direction of force integrity better, and in the vertical direction of assembly suture force integrity in general.