单轴受压应力-应变曲线试验技术综述  

Review on Experimental Techniques of Stress-strain Curve of Uniaxial Compression

作　　者：郭雷[1] 

机构地区：[1]中铁十八局集团有限公司第四工程有限公司,天津300222

出　　处：《石家庄铁路职业技术学院学报》2016年第2期68-71,共4页Journal of Shijiazhuang Institute of Railway Technology

摘　　要：随着试验技术和计算技术的进步,大型复杂的混凝土结构对非线性分析提出更高的要求。由于混凝土受力具有与应力路径相关的特点,完整的非线性混凝土三维应力-应变关系很难完整依靠试验来得到。实际上,在混凝土的各种本构模型中,我们能够全面获取试验数据的也只有相对最简单的混凝土单轴受压试验。受压混凝土达到峰值应力时没有完全破坏,下降段上的残余承载力还有一定的利用价值。此外,进入下降段的受压混凝土,仍然具有消耗能量的能力。With the development of experimental techniques and computer technology, the large scale and complex concrete structure has a higher request for the nonlinear analysis. Because the stress on concrete correlates with the stress path, it is not easy to get a complete nonlinear concrete three-dimension stress-strain relationship through experiments. Actually, among various models of constitutive relationship of concrete, the experiment from which we can completely achieve experimental data is the simplest concrete tmiaxial compression one. The pressed concrete will not be broken when the stress reaches its peak value, and the remaining bearing capacity in the descending stage is still worthy of being made use of. Furthermore, the pressed concrete in the descending stage still has the capacity to consume energy.

关 键 词：混凝土本构关系 应力-应变曲线 单轴受压 应变能 刚性试验机电液伺服试验机 

分 类 号：U412.34[交通运输工程—道路与铁道工程]