Damage Analysis of Gravity Dam under Uniform Impact Load

The impact of the gravity dam on the underwater shock wave caused by the long distance underwater explosion and the large volume of the landslide could be regarded as a uniform impact. Damage of concrete gravity dam is much more complex under impact load than under static load. Based on the nonlinear explicit dynamic analysis program Abaqus / Explicit,a 3D model of concrete gravity dam under uniform impact load is built considering the effect of high strain rate of concrete. Furthermore,the full-performance of numerical simulation about dynamic responses of the dam under different impact load is taken,and then the damage of concrete gravity dam under different impact load is discussed. Experimental results show that the damage mode of the dam is not only related with the dynamic characteristics of the dam itself,but also with the size of the impact energy,and the dam damage has two forms of tensile damage and compressive damage,while mainly the former.