Dynamic response analysis of blocks-combined dam under impact load  

作　　者：GAO Fang-fang TIAN Wei 

机构地区：[1]School of Civil Engineering,Chang’an University,Xi'an 710061,China

出　　处：《Journal of Mountain Science》2020年第11期2827-2839,共13页山地科学学报（英文）

基　　金：financially supported by the National Natural Science Foundation of China(Grant No.51379015,51579013);the Fundamental Research Funds for the Central Universities,Excellent doctoral dissertation cultivation project of Chang’an University;the Fundamental Research Funds for the Central Universities,Chang’an University(CHD)(Grant No.300102289303);Natural National Science Foundation;Fundamental Research Funds for the Central Universities for the financial support。

摘　　要：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.

关 键 词：Impact load Blocks-combined dam Unbonded post tensioned steel strand Debris flow Dynamic response Numerical simulation 

分 类 号：P642.23[天文地球—工程地质学] TV312[天文地球—地质矿产勘探]