High CFRD Static And Dynamic Analysis And The Effect Of Slab Vertical Joints

Concrete faced rock fill dams (CFRD) have several advantages in many water conservancy dams. Because of their simple detailing and construction sequence, topography and geological conditions of strong adaption,low cost, simple diversion and excellent resistance to earthquake loading,CFRD have played important role in water and electricity resource developed at global. Many experts in world affirmed its development prospects. CFRD have been developed on quantity and height quickly in recent decades. However, the slab of most model is not set vertical joints and the concrete spalling failure of the slab joints in high CFRD has appeared in current engineering practices. The vertical joints on the concrete slab should be set properly because of the appearance of shrinkage crack on the whole slab, which is located on the constrained cushion. However, few studies are made about the effect of vertical joints and dynamic response of earthquake on the stress and strain of the CFRD. So it is of great significance to know the effect of vertical joints and dynamic response of earthquake on the stress and strain of the CFRD. In this paper, the numerical simulation of CFRD is conducted and static and dynamic analysis is made in different kinds of working conditions. The effect of vertical joints on the stress of concrete slab is also studied.1. By means of ANSYS, the process of construction and filling for CFRD is simulated and the finite element models of regular dam of 300m are built. Three kinds of working conditions of 300 meters regular CFRD were analyzed to research on the size and distribution regularities of the stress and deformations. Besides, the effects vertical joints on it was also studied.2. The height of Shuibuya CFRD is 233 meters, which is the highest concreting slab dam. By means of ANSYS, the process of construction and filling for CFRD is simulated and the finite element models of Shuibuya are built. Three kinds of working conditions of 300 meters regular CFRD were analyzed to research on the size and distribution regularities of the stress and deformations. Besides, the effects vertical joints on it was also studied.