COMPRESSIVE SHEAR BEHAVIOR IN FRACTURE PROCESS ZONE OF CONCRETE
COMPRESSIVE SHEAR BEHAVIOR IN FRACTURE PROCESS ZONE OF CONCRETE
复制标题
混凝土断裂过程区的压剪行为
DOI：
10.3130/aijs.64.1_11
复制
发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Midori Kaneko
中科院分区：
文献类型：
--
作者：
Y. Shinohara;Midori Kaneko
本试验研究的主要目的是获得裂缝混凝土的剪切响应，并为应用于非线性有限元分析积累必要的信息。为了确定裂缝混凝土的剪切行为，研制了一种可由闭环伺服系统独立控制竖向和水平荷载以及位移的双轴试验装置。对含有窄裂纹的试件(位移控制中的拉伸试验引入的断裂过程区)进行了剪切试验，保持裂纹表面的法向位移或载荷不变。讨论了法向载荷和剪切载荷与裂纹张开和滑动位移的关系，并通过裂纹面法向方向的边界条件进行了区分。根据试验结果，推导出了几个剪切保持率等公式。
The primary purpose of this experimental investigation is to obtain the shear response in a cracked concrete, and to accumulate the necessary information that applies to nonlinear finite element analysis. A biaxial testing device, with which the vertical and horizontal load as well as displacement can be independently controlled by closed-loop servo systems, has been developed in order to establish the shear behavior in cracked concrete. The shear tests on specimens containing narrow cracks (fracture process zone introduced by the tensile test in displacement control) have been carried out maintaining either normal displacement or load across the crack surface constant. The relation of normal and shear loads to crack opening and sliding displacements was discussed and distinguished by the boundary conditions of the normal direction across the crack surface. Several expressions which give shear retention factor and so on, have been derived from the experimental results.