3D Finite Element Analysis of Yixing CFRD Built on Inclined Mountain Slope

2018 2nd International Workshop on Renewable Energy and Development

能源学;经济学

Sun, Da Wei^1 ; Zhang, Liang^1 ; Yao, Hui Qing^1 ; Wang, Kang Ping^1

Three Gorges University Key Laboratory of Geological Hazards on Three Gorges Res Ervoir Area, Ministry of Education, Yi'chang, HUBEI

443002, China^1

关键词: 3-D finite elements;    3D nonlinear finite elements;    3D-finite element analysis;    Calculation time;    Design and construction;    Equations solving;    Mountain slopes;    Seal materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/153/5/052058/pdf
DOI  :  10.1088/1755-1315/153/5/052058

来源: IOP

【 摘 要 】

There are few CFRDs built on steep slope with dam height more than 50 m. So does the relative design and construction experience. The 75 m-high Yixing CFRD was built on steep mountain slope and the 45.9m-high gravity retaining wall was used to against dam sliding. Since the excessive deformation of dam body and perimetric joints would lead to failure of seal materials and cause water leakage, 3D nonlinear finite element stress-deformation analysis was carried out. 3D finite element mesh with 63875 elements including retaining wall and surrounding mountain was established by use of advanced grid discreteness technique. Large scales of equations solving method were adopted in the computer procedure and the calculation time was greatly reduced from former 40 hours to now 45 minutes. Therefore the behavior of the dam, retaining wall and the joint was obtained in a short time, and the results would be helpful to the design and construction of Yixing dam.