JATIGEDE粘土心墙堆石坝及其溢洪道非线性动力响应分析  

Research on Nonlinear Dynamic Response of JATIGEDE Clay Core Rockfill Dam and Its Spillway

作　　者：陈学章[1] 何江达[1,2] 谢红强[1,2] 肖明砾[1] 

机构地区：[1]四川大学水利水电学院,四川成都610065 [2]四川大学水力学与山区河流开发保护国家重点实验室,四川成都610065

出　　处：《水电能源科学》2013年第12期83-86,共4页Water Resources and Power

基　　金：国家自然科学基金资助项目(51079092);四川省科技支撑计划基金资助项目(2008SZ0163)

摘　　要：由于JATIGEDE粘土心墙堆石坝的溢洪道直接建立在散粒体上,同时边墙直接与粘土心墙相接,因此大坝及坝体与溢洪道接触面在地震荷载作用下的响应特性将影响大坝的安全运行。对此,基于E-B模型静力有限元计算,利用非线性动力有限元原理对JATIGEDE粘土心墙堆石坝进行动力响应分析,研究了其坝体动应力、动位移及接触面动力稳定性等。结果表明,在地震作用下,大坝整体地震响应并不强烈,但坝顶出现了明显的"拱效应",需采取相应工程措施。As the spillway of JATIGEDE clay core rock{ill dam built on the granular, and sidewalls connected with the clay core directly, so the response characteristics of the dam and the contact surface between dam and spillway would af- fect the dam＇s safe operation under seismic load. Based on the static finite element analysis of E-B model, this paper studies the dynamic response of JATIGEDE clay core rockfill dam by using nonlinear dynamic finite element principle. And then the dynamic stress, displacement of the dam and the stability characteristics of the contact surface under the earthquake have been researched. The results show that under the earthquake conditions, the overall dam＇s response is weak while the response at the top of the dam is strong. Thus, certain measures should be taken to guarantee the stability of the dam.

关 键 词：JATIGEDE粘土心墙堆石坝 动力响应 非线性有限元 动应力 动位移 接触面稳定性 

分 类 号：TV641.41[水利工程—水利水电工程] TV312