Study On The Capability Of Deflection And Strength Of The Lightweight Concrete Sandwich Slabs

The main content of this thesis is the experimental research and the theoretical analysis of the lightweight CS (concrete sandwich) slabs.Based on the experimental research of two groups of one-way simply supported slabs (three members for each group) with the spans of 4.5m and 3.9m under the uniform-distributed load, the crack load and failure load of this kind of slabs were gotten, the curves which represented the relationship between the load and the width of the cracks, the curves which represented the relationship between the development of the deflection and the load and the curves which represented the relationship between the tensile steel stress and the load were drawn, and the failure forms of these slabs were shown. Based on the experiment foundation, the theoretical formula to calculate the crack load and the failure load of this kind of slabs were provided.Based on the experimental research on a group of one-way simply supported slabs (three members) with the span of 2.5m under the concentrate load, the shearing failure load of this kind of slabs was gotten, the curves which represented the relationship between the concentrate load and the stress of the inclined inserted steel bars were illuminated, and the failure forms of these slabs were shown. Based the experimental foundation, the theoretical formula of the shearing failure load of this kind of slabs were provided in this thesis.