摘要
为分析高碾压混凝土拱坝的整体安全性,综合模拟主要断层、软弱夹层、裂隙、岩体材料分区以及坝体结构特征,建立拱坝整体稳定三维有限元模型。采用非线性有限元法分析正常运行条件下拱坝-地基的整体工作性态;在此基础上采用水容重超载法,计算拱坝的极限承载能力。结果表明,正常运行条件下,拱坝整体稳定性较好;通过对水容重安全系数进行工程类比,该拱坝具有较高的超载安全系数,处于拱坝工程的中等偏上水平。
In order to analyze the overall safety of high roller compacted concrete arch dams,this paper comprehensively simulates the main faults,weak interlayers,cracks,rock material zoning and dam structural characteristics,and establishes a three-dimensional finite element model for the overall stability of the arch dam.The nonlinear finite element method is used to analyze the overall working behavior of arch dam foundation under normal operating conditions,and on this basis,the water unit weight overload method is used to calculate the ultimate bearing capacity of arch dam.The results indicate that under normal operating conditions,the overall stability of arch dam is good.Through the engineering analogy of the factor of safety of water volume weight,the arch dam has a high factor of safety,which is in the upper middle position of the arch dam project.
作者
汪妍
程恒
杨仕志
解凌飞
杨波
李烽
WANG Yan;CHENG Heng;YANG Shizhi;XIE Lingfei;YANG Bo;LI Feng(China Institute of Water Resources and Hydropower Research,Beijing 100038,China;Hubei Provincial Water Resources and Hydropower Planning Survey and Design Institute,Wuhan 430064,Hubei,China)
出处
《水力发电》
CAS
2024年第3期75-81,共7页
Water Power
基金
国家重点研发计划(2021YFC3090102)
中国长江三峡集团有限公司科研项目(412002002,XLD/2114)。
关键词
高拱坝
弹塑性有限元
超载法
整体稳定
安全度
工程类比
high arch dam
elasto-plastic finite element method
over-loading method
overall stability
safety degree
engineering analogy
