Development of compression-bending-shear test setup which can examine RC/SRC columns up to their complete collapse

开发压缩-弯曲-剪切测试装置，可以检查 RC/SRC 柱的完全倒塌

基本信息

批准号：
10555198
负责人：
TAKIGUCHI Katsuki
金额：
$ 6.53万
依托单位：
Tokyo Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B).
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 2000
项目状态：
已结题

项目摘要

1.Compression-bending-shear test setup was developed. It is for reinforced concrete and/or steel encased reinforced concrete columns, and it enables complete collapse test. Constant axial force is loaded to the column specimen by steel weight. Relative rotational displacement between top stub and bottom stub of the column specimen is not permitted. Mechanical and hydraulic parallel keeping systems were developed. The column specimen can be stably loaded even at the stage that the restoring force direction is negative in the test in which the deformation is controlled to increase monotonically.2.The effect of seismic strengthening method for shear failure type reinforced concrete column using ferrocement is clarified. Shear failure type column specimens and strengthened specimens with ferrocement were made and tested up to the extremely large deformation. The specimens failed in shear were repaired and strengthened with ferrocement, and then retested.3.The relationship between the mechanical behaviors of a reinforced concrete column and bond properties of longitudinal rebars is investigated experimentally. Bond properties of longitudinal rebars of specimens were changed and restoring force characteristic of the specimens were exmined. Failure modes of the specimens subjected to compression, bending and shear were also observed in detail. Deformed bars and round bars were used as longitudinal rebars of the specimens. The bars were partially covered with paraffin wax in order to change the bond properties.

1.开发了压缩弯曲剪切测试设置。它用于钢筋混凝土和/或钢包裹的钢筋混凝土柱，并且可以完全塌陷测试。通过钢重量将恒定的轴向力加载到柱标本上。不允许使用柱试样的顶部存根和底部存根之间的相对旋转位移。开发了机械和液压平行保存系统。即使在控制变形的恢复力方向为单调增加的测试中，也可以稳定地加载柱样品。2。使用费雷层阐明地震加强方法对剪切故障类型增强混凝土柱的效果。制作了剪切故障型柱标本和加强试样，并进行了超大的变形测试。修复了剪切中的样品，并通过超固定进行修复并加强。3。实验研究了钢筋混凝土柱的机械行为与纵向钢筋的键特性之间的关系。更改了标本的纵向钢筋的键特性，并将样品的恢复力特征恢复。还详细观察了受到压缩，弯曲和剪切的样品的故障模式。变形条和圆条用作标本的纵向钢筋。棒部分用石蜡蜡覆盖，以更改键特性。