岩滩溢流重力坝抗震安全分析和评价  

Earthquake-resistant Safety Analysis and Evaluation for Overflow Section of Yantan Gravity Dam

作　　者：马跃[1] 沈振中[1] 甘磊[1] 覃杰 李文森 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098 [2]广西岩滩水电厂,广西大化530811

出　　处：《水利与建筑工程学报》2010年第2期20-22,共3页Journal of Water Resources and Architectural Engineering

基　　金：河海大学水文水资源与水利工程科学国家重点实验室专项基金(2009586012)

摘　　要：为评价岩滩重力坝抗震的安全性,建立了坝体和坝基的三维有限元模型;对地震工况下的坝体应力、位移分布,以及坝基面抗滑稳定安全系数和坝基深层抗滑稳定安全系数进行计算,并分析了坝基岩体变形对坝体抗滑稳定性的影响。结果表明,在设计地震荷载作用下,坝基面和深层抗滑稳定安全系数的最小值为4.08和7.3。坝段强度满足规范要求,大坝的抗震安全性满足规范要求。In order to analyze and evaluate the earthquake-resistant safety of Yantan gravity dam, a three-dimensional finite element model is built to calculate the stress of the dam body, displacement distribution, safety factors of stability against sliding on the face of the dam foundation and safety factors of stability against sliding of the dam bedrock under the operating condition of earthquake, and the effects of rock deformation on the stability against sliding of the dam body are analyzed. The results show that the minimum safety factor of stability against sliding on the face of the dam foundation is 4.08, that of the dam bedrock is 7.3, so the intensty of the dam section and the earthquake-resistant safety of the dam could meet the requirements of standard.

关 键 词：重力坝 抗滑稳定 反应谱法 强度储备法 

分 类 号：TV642.3[水利工程—水利水电工程]