Vol17 No.11: 2827-2839
【Title】Dynamic response analysis of blocks-combined dam under impact load
【Author】GAO Fang-fang; TIAN Wei*
【Addresses】School of Civil Engineering, Chang'an University, Xi'an 710061, China
【Corresponding author】TIAN Wei
【Citation】Gao FF, Tian W (2020) Dynamic response analysis of blocks-combined dam under impact load. Journal of Mountain Science 17(11). https://doi.org/10.1007/s11629-019-5619-0
【Abstract】In order to reduce the damage of ordinary gravity dam impacted by boulders in debris flow, a blocks-combined dam based practical project is proposed. The dynamic response of the proposed dam under impact load is investigated by using ABAQUS finite element software. Considering the impact velocity and impact height, the anti-impact performance of blocks-combined dam is discussed in terms of deformation, displacement, impact force, acceleration, and energy, and is compared with that of ordinary dam. Results show that the displacement, impact force and acceleration of dam increase with the increase of impact velocity and height. The impact energy of blocks-combined dam is mainly absorbed and consumed by the friction between the component interfaces, which is related to the location of impact point. Compared with the ordinary gravity dam, the blocks-combined dam has better impact resistance to boulders in debris flow.
【Keywords】Impact load; Blocks-combined dam; Unbonded post tensioned steel strand; Debris flow; Dynamic response; Numerical simulation