基于有限元的高拱坝坝肩稳定分析  

Abutment stability analysis of high arch dam based on finite element method

作　　者：陈迪辉[1,2] 姓海涛 张敏 CHEN Dihui XING Haitao ZHANG Min(State Key Laboratory of Hydrology- Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, Jiangsu National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, Hohai University, Nanjing 210098, Jiangsu Water Affair Bureau of Lishui District, Nanjing 211200, Jiangsu)

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]河海大学水资源高效利用与工程安全国家工程研究中心,江苏南京210098 [3]南京市溧水区水务局,江苏南京211200

出　　处：《江苏水利》2017年第3期58-61,共4页Jiangsu Water Resources

摘　　要：各类软弱结构面,如断层、煌斑岩脉、层间挤压带、深部裂隙等,会对拱坝坝基及坝肩稳定产生不利影响。本文以某高拱坝为例,通过建立三维有限元模型,研究复杂地质地基条件对大坝应力、位移以及坝肩稳定性的影响。由分析得,在正常蓄水位工况下,位移符合拱坝的一般规律,拉、压应力与容许拉、压应力相比偏大。采用刚体极限平衡法对坝肩进行稳定校核。选取了6个不同高程的拱圈进行校核,均满足规范要求。There are many different kinds of weak structural planes in the abutment rock mass like faults, lampropbyre dike, inner layer compressed zone and deep-seated fracture. All of these are disadvantageous to the stability of the dam abutment and foundation. Taken a high arch dam as an example, a three-dimensional finile element model is established to study the efforts of the complex geological conditions of the dam stress, displacement and abutment stability. According to the result, the changes in displacement meet the general law of arch under the working condition of the normal storage level. Tensile stress and compressive stress is larger than the allowable value. Rigid body limit equilibrium method is used to check the stability of tire abutmenh Six different elevations of the arch are selected. All of them meet the stability requirements.

关 键 词：高拱坝 ABAQUS有限元分析 坝肩稳定 刚体极限平衡法 

分 类 号：TV64[水利工程—水利水电工程]