摘要
传统的确定大坝安全监控指标的方法都采用小变形和连续性假设,不能把重力坝的整体抗滑稳定与大坝变形有机地结合起来。在研究影响混凝土重力坝安全的因素和预警指标体系的基础上,引入基于块体理论的非连续变形分析,考虑坝体和坝基整体抗滑稳定,采用强度折减系数法分析了三峡大坝左岸厂房3#坝段的整体抗滑稳定性,得到了安全系数与大坝位移之间的内在联系。根据失稳判据和坝体位移与强度折减系数之间的关系曲线确定了大坝的结构性态,并估计出大坝弹性状态和承载极限状态的变形预警指标。
The traditional definite dam safe monitoring target method all used the small distortion and the continuous supposition,we can not regard the stability against sliding of the gravity dam and the deformation of the dam organically combined.Based on the research of influence concrete gravity dam security factor and the early warning index system,introduced block-based theory of discontinuous deformation analysis,considered the whole stability against sliding of the dam body and the dam base,used the intensity...
出处
《水利学报》
EI
CSCD
北大核心
2007年第S1期94-99,共6页
Journal of Hydraulic Engineering
基金
国家科技支撑计划(2006BAC14B03)
江苏省高等学校研究生创新计划(2017-B06005)
关键词
重力坝
抗滑稳定性
变形
预警指标
非连续变形分析(DDA)
gravity dam
stability against sliding
deformation
early warning index
discontinuous deformation analysis(DDA)