再生混凝土双向板抗冲切性能试验研究

Research on the Punching Resistance of Recycled Concrete Two-way Slabs

再生混凝土是一种绿色环保型建筑材料,其在工程中能够部分代替普通混凝土,这样不仅可以消化大量的废弃混凝上,而且可以减少对天然砂石的开采,从而缓解环境压力。因此,国内外的研究学者进行了大量的试验和理论研究,但是这些试验绝大部分都是基于再生混凝土材料的基本力学性能进行的,对于其在结构设计应用方面的试验研究较少。本文共设计了6块再生钢筋混凝土双向板和2块普通钢筋混凝土双向板试件,对再生混凝土双向板的抗冲切性能进行了试验和对比试验研究。主要通过再生混凝土双向板在中置局部垂直集中荷载作用下的静力试验,研究板底纵筋配筋率、板厚和加载面面积对再生混凝土双向板抗冲切性能的影响,并初步得到一些结论。

Recycled concrete is a kind of green environmental building materials, it could partially instead of common concrete in the project, such not only can absorb a large number o fwaste concrete, but also reduce the exploitation of natural sand and gravel, to alleviate the pressure of the environment. For the application of it, many scholars all over the world have done a lot ofexpcriments and theoretical researches, but the majority of these experiments are based on the basic mechanical properties of recycled concrete materials. The experiments on application of structural desi L, ning need further and deeper researches. This paper designed 6 pieces of recycled concrete square slabs and 2 pieces of normal concrete square slabs for the experimentid research of recycled concrete square slabs punching performance. This study mainly focused on the influence of reinforcement ratio, thickness and load area side length of recycled concrete square slabs punching performance under local vertical loads by the static test.