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Experimental Study on the Dynamic Splitting Tensile Behaviour of Concrete

机译：混凝土动态劈裂拉伸性能的试验研究

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摘要

Many structures and buildings such as nuclear power station and chemical plant are often subjected to impact and explosive loadings. The understanding of material response to high-amplitude, short-duration, impulse loads is very important, dynamic behavior of concrete under high strain rate has been paid much attention to. In the present paper, experimental study on the dynamic tension behavior of concrete is carried out. Based on the former theoretical introduction, dynamic splitting tensile tests at different strain rates are conducted on 74mm diameter concrete specimens in a Split Hopkinson Pressure Bar to study the effect of strain rate on the dynamic tension behavior of concrete. The mechanism and speed of crack propagation of concrete cylinder planar surface in dynamic splitting tensile test are discussed briefly.
机译：许多结构和建筑物，例如核电站和化工厂，经常受到冲击和爆炸载荷。了解材料对高振幅，短持续时间，冲击载荷的响应非常重要，在高应变率下混凝土的动态性能已受到广泛关注。本文对混凝土的动态拉伸性能进行了实验研究。根据以前的理论介绍，在裂口霍普金森压力棒上对74mm直径的混凝土试样进行了不同应变速率下的动态分裂拉伸试验，以研究应变速率对混凝土动态拉伸行为的影响。简要讨论了动态劈裂拉伸试验中混凝土圆柱体平面裂纹扩展的机理和速度。

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