混凝土注芯砌块砌体材料本构关系试验  

Experimental research on grouted concrete block masonry's constitutive law under plain stress state

作　　者：刘立鹏[1] 张连振[1] 翟长海[2] 翟希梅[2] 

机构地区：[1]哈尔滨工业大学交通科学与工程学院,哈尔滨150090 [2]哈尔滨工业大学土木工程学院,哈尔滨150090

出　　处：《哈尔滨工业大学学报》2007年第12期1900-1903,共4页Journal of Harbin Institute of Technology

摘　　要：与普通混凝土材料相比较,混凝土砌块砌体由于构成材料的性质迥异、规则性布置方式以及块体自身具有的方向性差别而表现出明显的各向异性.在宏观层次上,将各组成相材料的影响视为整体的平均表观性能考虑,把具有实际尺寸的宏单元体作为基本研究对象,采用唯象方法,通过设置减摩层,进行单元体在平面应力状态下的单、双轴试验.利用应力比、异化参数和等效单轴应变的概念,建立混凝土注芯砌块砌体材料的平面应力状态的非线性本构关系,并与试验曲线进行比较,能够很好地表征混凝土砌块砌体所具有的非线性各向异性特点.Compared with plain concrete material, concrete block masonry exhibits distinct directional characteristics on account of the different properties of the anisotropy of the block, its component materials and the regular layout pattern. In this paper, the effect of any component is treated as a whole. By the phenomenological approach, test on the macro element with macroscopic dimension is conducted for different principal stress ratios under in - plain loading. By the concept of stress ratio, heterogeneous parameter and equivalent uniaxial strains, the constitutive law of grouted concrete block masonry is achieved under plain stress state. It can express the anisotropic nonlinear behaviour of concrete block masonry.

关 键 词：混凝土砌块砌体 各向异性 平面应力 本构关系 

分 类 号：TU365[建筑科学—结构工程]