小间距钢梁混凝土空心楼盖空心混凝土板变形分析

Deformation Analysis of Hollow Concrete Slab of Small Spacing Steel Beam Concrete Hollow Floor

为了研究小间距钢梁混凝土空心楼盖弹性阶段空心板的变形情况,我们针对原结构的0.5倍缩尺模型试验和数值分析,对小间距钢梁混凝土空心楼盖模型进行竖向加载试验,得到模型在使用阶段的竖向方向的变形情况。经过试验得出的试验数据及对数据进行数学方法整理分析,得出在使用阶段混凝土空心板的变形情况,空心板混凝土上板面受压,下板面受拉,截面2-2混凝土应变值整体对比要比截面1-1小,即混凝土板中心截面变形大。离截面中心越远位置混凝土变形减弱,且在一定范围随荷载增大差异变化越明显。

In order to study the deformation of the hollow slab in the elastic stage of the small-spacing steel beam concrete hollow floor,we conducted a vertical loading test on the small-spacing steel beam concrete hollow floor model according to the 0.5 times scale model test and numerical analysis of the original structure,the deformation of the model in the vertical direction in the use stage is obtained.After the test data obtained from the test and the mathematical analysis of the data,the deformation of the concrete hollow slab in the use stage is obtained.The overall contrast is smaller than that of section 1-1,that is,the deformation of the central section of the concrete slab is large.The farther away from the center of the interface,the weaker the concrete deformation,and the more obvious the difference changes with the increase of the load in a certain range.