论文部分内容阅读
近几年北京市一批公共建筑及高层民用建筑采用了预应力薄板叠合楼板,获得了良好的效果。这种楼板板底光滑平整,厚度小,自重轻,适应平面形式多样化;结构整体性好,现场工作量少,施工期短。因此使用面越来越广。但它的内在问题随着使用的增多也逐步暴露,其中较为突出的问题就是叠合面的处理方法。目前广为采用的方法是设置结合钢筋。这种方法耗费钢筋,制作复杂,运输及堆放都较困难,而其必要性却值得探讨。因为在民用建筑中,楼板荷载一般都较小。板的剪应力大都为2～3kgf/cm~2(本文中1kgf≈10N),我们取消结合钢筋,用压痕处理等方法来代替认为可能依
In recent years, a number of public buildings and high-rise civil buildings in Beijing have used pre-stressed laminated plates to obtain good results. This kind of floor slab is smooth, flat, small in thickness, light in weight and adaptable to the diversification of the planar form; the structural integrity is good, the on-site workload is small, and the construction period is short. Therefore, the use of more and more. However, its internal problems are gradually exposed with the increase in use, among which the more prominent problem is the method of dealing with overlapping surfaces. The current widely used method is to set the combined reinforcement. This method is costly and complex. It is difficult to transport and stack, and its necessity is worth exploring. Because in civil buildings, floor loads are generally small. Most of the shear stress of the plate is 2~3kgf/cm~2 (in this article, 1kgf~10N). We cancel the combination of steel bars and use indentation treatment instead of thinking that it may be