摘要
分别从试验机和试件2个方面详细阐述了实现混凝土轴向拉伸应力应变全曲线测试的条件,即试验机的刚度和试件的尺寸必须满足一定的要求.而试件两端的连接方式和试件受拉区是否预设缺口则对试验结果的准确性产生重要影响.基于上述几点因素,对文献中所载的各种试验及研究中的经验和成果进行了概括和总结,分析了目前混凝土轴向拉伸应力应变全曲线试验在实践中仍旧存在的一些问题以及该试验近年来发展的方向和脉络,并结合实际情况对该试验的进一步发展做出了展望.
From the angle of testing machine and specimen, this article illustrates in detail the conditions for the realization of the complete stress-strain curve for concrete in direct tension that the rigidity of testing machine and the specimen size should satisfy some specified requirements. Besides, the specimen-machine attended mode and preinstalled hole in the specimen tensile region play a important role in the accuracy of the test result. Based on the previous factors, this article generalize the experience and outcome in all styles of recorded tests and researches. Exclusively, it analyzed some existing problems in tests of complete stress-strain curve in tension and the developing venation and direction of the test. According to the practical situation, it forecasts the further improvements of these kinds of test.
出处
《建筑技术开发》
2005年第11期13-16,共4页
Building Technology Development
关键词
混凝土
轴向拉伸
应力应变全曲线
试验机刚度
试件尺寸
Concrete
Direct tension
Complete stress-strain curve
Testing machine stiffness
Size of specimen
作者简介
李军，男，安徽蚌埠人，在读硕士。
