地震荷载作用下某水利枢纽大坝响应机理分析  

Analysis of Response Mechanism of a Hydro Junction Dam under Earthquake Load

作　　者：郭艳玲 GUO Yan-ling(Linqi Urban Lanshan Water Affairs Bureau,Linqi 276000,China)

机构地区：[1]临沂市兰山区水务局,山东临沂276000

出　　处：《黑龙江水利科技》2021年第3期8-12,共5页Heilongjiang Hydraulic Science and Technology

摘　　要：根据某水利枢纽大坝工程,对地震荷载下坝体响应机理进行分析。从坝体地震加速响应、动位移响应以及混凝土心墙坝应力响应3个方面进行分析。结果表明:大坝地震响应具有显著的辫梢效应,动位移与坝体高程呈正相关关系,地震影响下,混凝土心墙出现短暂的拉应力。在设计过程中,应当重视坝体结构对地震影响的放大作用,预留足够的安全度。According to the dam project of a water conservancy project,the response mechanism of dam body under earthquake load is analyzed.The seismic acceleration response,dynamic displacement response and stress response of concrete core wall dam are analyzed.The results show that the seismic response of the dam has significant braid tip effect,the dynamic displacement is positively correlated with the dam height,and the concrete core wall has a short-term tensile stress under the influence of earthquake.In the design process,attention should be paid to the amplification effect of the dam structure on the earthquake impact,and sufficient safety degree should be reserved.

关 键 词：大坝 地震响应 加速度 动位移 应力 

分 类 号：TU435[建筑科学—岩土工程]