Water Science and Engineering 2011, 4(4) 445-454 DOI:   10.3882/j.issn.1674-2370.2011.04.008  ISSN: 1674-2370 CN: 32-1785/TV

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CSG dam
shape optimization
sensitivity analysis
CAI -Xin
WU Ying-Li
Article by Cai,.X
Article by Wu,Y.L

Research on shape optimization of CSG dams

Xin CAI*1, 2, Ying-li WU3, Jian-gang YI2, Yu MING2

1. College of Mechanics and Materials, Hohai University, Naijing 210098, P. R. China
2. College of Water Conservancy and Hydropower Engineering, Hohai University, Naijing 210098, P. R. China
3. Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210024, P. R. China


The multi-objective optimization method was used for shape optimization of cement sand and gravel (CSG) dams in this study. The economic efficiency, the sensitivities of maximum horizontal displacement and maximum settlement of the dam to water level changes, the overall stability, and the overall strength security were taken into account during the optimization process. Three weight coefficient selection schemes were adopted to conduct shape optimization of a dam, and the case studies lead to the conclusion that both the upstream and downstream dam slope ratios for the optimal cross-section equal 1:0.7, which is consistent with the empirically observed range of 1:0.6 to 1:0.8 for the upstream and downstream dam slope ratios of CSG dams. Therefore, the present study is of certain reference value for designing CSG dams.

Keywords CSG dam   shape optimization   sensitivity analysis  
Received 2011-05-18 Revised 2011-09-29 Online: 2011-12-30 
DOI: 10.3882/j.issn.1674-2370.2011.04.008

This work was supported by the National Natural Science Foundation of China (Grant No. 51179061), and the Specialized Research Fund for the Doctoral Program of Higher Education (Grant No. 20100094110014).

Corresponding Authors: Xin CAI
Email: xcai@hhu.edu.cn
About author:


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