新型组合梁板连接中板的抗弯性能

在高层建筑结构设计中，由于上部荷载较大或梁的跨度较大，使得梁的截面高度较高，通常会影响建筑的有效层高和建筑的总体高度。为了减小各层梁板结构高度，有效增大各层净高，提出了一种钢箱梁嵌入现浇板的新型组合梁板连接方式。针对这种新型连接方式，对6个钢箱梁混凝土板组合连接区域进行了板承受支座负弯矩的单调加载试验，对比分析了采用钢箱梁嵌入混凝土板组合楼盖与传统栓钉连接组合楼盖中板抵抗支座负弯矩的性能差异；并利用ABAQUS对试件进行了有限元分析。试验与有限元分析结果表明：采用钢箱梁嵌入板连接组合方式，其混凝土板抵抗支座负弯矩的能力与传统连接方式板抵抗支座负弯矩能力没有明显差异。

Slab flexural behavior of a new composite beam-slab connection

In structural design of high-rise buildings, due to large upper loads or span, the beam section height is large, which usually affects the effective story height and the total height of building. To reduce the height of beam-slab structure and increase the clearance height of each floor effectively, a new connection method of composite beam-slab structure with steel-box beam embedded was proposed. As for the new connection method, monotonic loading tests were carried out on composite connection area of six steel-concrete slabs with steel-box beam embedded, to study the negative moment resistant. The difference in negative moment resistant capacity between the concrete composite floor with steel-box beam embedded and the concrete composite floor with traditional stud connection was analyzed. The finite element analysis was carried out by using ABAQUS. Experimental results and finite element analysis show that, as for the connection method of composite beam-slab with steel-box beam embedded, the negative moment resistant capacity of concrete slab has no significantly difference with the concrete slab with traditional stud connection.