全装配式桁架梁组合楼盖平面内刚性性能试验研究

发布时间：2018-05-06 12:27

本文选题：装配式组合楼盖 + 拼装板缝　；参考：《建筑结构学报》2017年08期

【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。
[Abstract]:In order to study the in-plane rigidity of the composite floor of fully assembled truss beams in a column frame tube structure, a 1 / 3 scale structure model of four single cylinder structures is designed and fabricated. Based on the unidirectional loading test in the floor plane, the deformation behavior and crack development of the fabricated floor in parallel to and perpendicular to the joint direction of the assembly slab are studied. Distribution and transfer performance of horizontal load, in-plane stiffness and integral deformation of floor. The results show that under the action of the horizontal force of the floor corresponding to the earthquake of 7 degrees, the composite floor is in the elastic working state when it is parallel to and perpendicular to the joint direction of the assembly plate, and the floor is in the state of being subjected to the force parallel to the joint direction of the assembly plate. The deformation behavior of the floor is similar to that of the deep beam, but when it is perpendicular to the joint direction of the assembly plate, the floor plane is subjected to the bending state of each assembly plate element, and the floor system has a better integrity when it is parallel to the joint direction of the assembly plate. The integrity is general in the direction perpendicular to the joint of the assembly plate.
【作者单位】：湖南大学土木工程学院钢结构研究所;湖南城市学院土木工程学院;吉首大学城乡资源与规划学院;
【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)
【分类号】：TU398.9

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