新型混凝土横孔空心砌块砌体受压性能研究

针对混凝土竖孔空心砌块存在的热、渗、裂等问题,提出并研究了一种混凝土横孔空心砌块.通过对9组(共54个)这种混凝土横孔砌块砌体的受压性能试验研究,了解了这种新型横孔砌块砌体的变形特征及破坏机理.基于试验结果并参考现行国家规范,提出了这种新型横孔砌块砌体的抗压强度计算方法.通过引入砌体对数型应力-应变关系模型,得到了这种新型横孔砌块受压应力-应变计算公式和弹性模量计算方法,对比结果表明,弹性模量计算值与试验值吻合良好.本文工作解决了新型横孔砌块抗压强度设计问题,为单轴受压下新型横孔砌块的内力分析和有限元分析提供了重要依据.

Research on the Compression Behavior of a New Type of Concrete Horizontal hole Hollow Block Masonry

There are many problems in the engineering application of concrete vertical hole hollow block masonry, for instance, poor thermal insulation, seepage and crack. To solve these problems, a new type of concrete horizontal hole hollow block masonry was developed. 9 groups with 54 compressive specimens of the new type masonry were tested, and the deformation characteristic and the failure mechanism of the new type block masonry were obtained. Based on the experiment results and by reference to the current national standards, a new compressive strength formula was proposed. The stress strain formula and elasticity modulus computational method for the new block masonry were proposed by using a logarithmic function model. The significance of this paper is to implement the strength design for the new type masonry and provide a basis to stress analysis and finite element analysis under uniaxial compression behavior.