高心墙堆石坝极限抗震能力初探  

Preliminary studies of ultimate aseismic capacity of high core rockfill dam

作　　者：邵磊[1] 迟世春[1] 李红军[2] 温州[3] 

机构地区：[1]大连理工大学海岸与近海工程国家重点实验室,辽宁大连116024 [2]中国水利水电科学研究院,北京100044 [3]黑龙江省水利水电勘测设计研究院,哈尔滨150080

出　　处：《岩土力学》2011年第12期3827-3832,3838,共7页Rock and Soil Mechanics

基　　金：国家自然科学基金(No.50879007;50979014;51179024)

摘　　要：高土石坝需要进行极限抗震能力和地震破坏模式分析。通过坝体动力反应分析、动强度验算以及地震变形分析,综合研究了高心墙土石坝的破坏过程。认为处于抗震极限状态的大坝防渗体及上游反滤料的顶部存在动强度不足问题,进而引起坝顶地震裂缝及上游反滤料顶部液化,最终导致坝体上、下游坝坡的失稳破坏。It is crucial to analyze the limit aseismic capacity and the failure mode for high core rockfill dam.The process of failure for high core rockfill dam is comprehensively studied on the basis of analyzing dynamic response,dynamic strength and seismic permanent deformation.The dynamic strength appears to be severely deficient in the impervious body and the upstream filter layer as the dam falls into the limit state.It is considered that the deficiency of dynamic strength will induce seismic fracture and liquefaction in the upstream filter layer,which finally will lead to failure of upstream and downstream slopes.

关 键 词：高心墙堆石坝 极限抗震能力 破坏模式 

分 类 号：TV641.4[水利工程—水利水电工程]