混凝土高拱坝孔口三维非线性分析

Three-dimensional nonlinear analysis of orifice of high arch dam

采用有限元方法中的子模型技术,对混凝土高拱坝的1#底孔进行了三维非线性分析,研究了孔口在坝体自重、库水压力和温度作用下混凝土开裂和裂缝发展情况,以及配筋对孔口开裂的影响.研究表明,采用子模型法不仅大大降低了网格剖分的难度,而且减少了三维非线性分析的计算时间.

Three-dimensional nonlinear analysis of the orifice of high arch dam is presented using submodelling techniques. The structural characteristics and failure mechanism of the orifice under loading of concrete deadweight, internal water pressure and temperature are studied. It is shown that the problem of meshing is solved and computing time reduced by using submodel method.