摘要
针对影响拱坝坝肩稳定性因素诸多问题,以乌东德高拱坝为例,采用非线性有限元数值分析法与矢量和安全系数法,分析了影响拱坝坝肩稳定的因素。计算结果表明,不同工况和影响因素下,坝肩岩体具有较高的矢量和安全系数;相对于比较方案,可研方案建基面的选择更合理;当裂隙连通率达到30%以上时,坝肩岩体不满足稳定性要求,需进行加固处理;拱端与上、下游基岩采用摩擦连接对拱端的受力更有利。
To study the factors for influencing the stability of arch dam abutment, nonlinear finite element analysis and vector sum safety factor method are used to analyze high arch dam of Wudongde. The results show that under differ- ent operating conditions and influencing factors, the abutment rock mass has higher vector sum safety factor feasibility study programs are more reasonable; the abutment rock mass does not meet the stability requirements and needs rein- forcement when the cracks connectivity rate reach 30% or more; the friction link between abutment and the bedrock is more favorable for the force of abutment.
出处
《水电能源科学》
北大核心
2013年第10期53-56,63,共5页
Water Resources and Power
基金
国家重点基础研究发展计划(973)基金资助项目(2011CB013505)
国家自然科学基金资助项目(51279100)
关键词
拱座
矢量和方法
稳定性
连通率
arch abutment vector sum method stability
connectivity rate
