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将在江西省建造的一座空腹重力坝,是在空腹内设拱,拱上填渣。它比一般空腹重力坝更能节约工程量,对改善坝踵应力以及提高坝体的稳定性有利。本文针对该坝断面及其所设的内拱轴线进行了优化设计。大坝断面优化采用可行方向法和复合形法,在设计变量、目标函数相同的条件下,二种方法取得了几乎完全一致的结果。内拱拱轴线的优化设计采用逐次迭代法,取得的成果对原设计有显著改善。
An empty-weight gravity dam to be built in Jiangxi Province will be filled with arch and fillings in the fasting area. It is more than the average fast-acting gravity dam to save more engineering, to improve the heel stress and improve the stability of the dam is beneficial. In this paper, the dam section and its internal arch axis were optimized. Dam section optimization using feasible direction method and complex method, the design variables, the objective function under the same conditions, the two methods have achieved almost exactly the same result. The optimal design of the arch arch axis using successive iteration method, the results achieved on the original design has been significantly improved.