安全与环境工程2016，Vol.23Issue(5)：144-148,169,6.DOI:10.13578/j.cnki.issn.1671-1556.2016.05.024
强冲击荷载作用下加无粘结预应力筋格栅坝动力响应分析
Dynamic Response of Grille Dam with Unbonded Prestressed Tendon under Strong Impact Load
摘要
Abstract
The resistance ability of debris dam is mainly increased by improving stiffness of the dam.How-ever,under the impact of stones,the bigger the dam’s stiffness is,the bigger impact force it bears,and the greater structural damage it gets.Based on this point,this paper innovatively sets unbonded prestressed tendon in the ordinary grille dam,and conducts the finite element numerical simulation and comparison a-nalysis of the ordinary and improved grille dam by applying ABAQUS software.Under the same impact condition with impact velocity of 10 m/s,the paper compares the grille dams before and after the impact from the aspects including changes of kinetic energy,acceleration respon sevalues,dam displacement and Von-mises stress.The result shows that the grille dam with unbonded pestressed tendon absorbs more im-pact energy,and the acceleration response value is smaller.The grille dam with unbonded pestressed tendon exhibits better performance in impact resistance.关键词
格栅坝/强冲击荷载/无粘结预应力筋/ABAQUS/动力响应Key words
grille dam/strong impact load/unbonded prestressed tendon/ABAQUS/dynamic response分类
资源环境引用本文复制引用
王秀丽,张嘉懿,陈露..强冲击荷载作用下加无粘结预应力筋格栅坝动力响应分析[J].安全与环境工程,2016,23(5):144-148,169,6.基金项目
国家自然科学基金项目（51278236）；国家科技支撑计划项目 （）
