针对二次曲线型拱坝,以最大拉应力最小为目标,建立了拱坝体型优化设计的数学模型.对某拟建高拱坝进行的优化设计研究表明,二次曲线拱坝能够更好地适应河谷形状;采用本文模型获得的优化体型可以在一定的坝体体积限制下,使最大拉应力得到降低,而且拉应力区域也有所减小 For the quadratic curvilinear arch dam, the mathematic model of the optimal design of the arch dam is established with the goal of minimizing the maximum tensile stress. The optimization design of a proposed arch dam shows that the conic arc dam can be better And adapt to the shape of river valley. The optimal body shape obtained by this model can reduce the maximum tensile stress and reduce the tensile stress region under certain dam volume limits