全装配式桁架梁组合楼盖平面内刚性性能试验研究  

Experimental study on in-plane stiffness performance of assembly truss beam composite floor

作　　者：舒兴平[1] 张再华[1,2] 贺冉[1,2] 肖时杰 刘泽龙[1] 

机构地区：[1]湖南大学土木工程学院钢结构研究所,湖南长沙410082 [2]湖南城市学院土木工程学院,湖南益阳413000 [3]吉首大学城乡资源与规划学院,湖南张家界427000

出　　处：《建筑结构学报》2017年第8期93-104,共12页Journal of Building Structures

基　　金：国家自然科学基金项目(51278178);湖南省自然科学基金重点项目(09JJ3102)

摘　　要：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 research the in-plane stiffness performance of a kind of truss beam assembly composite floor （ACF） used in multi-columns bundle tubes structure, four frame models of single-tube with scale of 1/3 were designed （two models for single-story and two-story respectively）. Based on the in-plane uniaxial loading experimental study, the in-plane mechanical and deformation performance, development of crack, distribution-transmission performance for floor level force, in-plane stiffness and overall deformation behavior of each floor were discussed and analyzed respectively in the direction of parallel to assembly slab seams and perpendicular to the slab seams. It is shown that, under the floor lateral-load corresponding to 7 degree rare earthquake, the kind of ACF is still in elastic phase. The service behavior of the assembly composite floor system is similar to a deep beam when the floor is loaded in the direction parallel to slab seams. While in the direction perpendicular to slab seams, it presents a state of bending for each assembly units respectively, The integrity behavior of the ACF in the direction parallel to slab seams is better than that in the direction perpendicular to the slab seams.

关 键 词：装配式组合楼盖 拼装板缝 平面内刚性性能 

分 类 号：TU398.9[建筑科学—结构工程] TU317.1