基于MSC.Marc软件的面板堆石坝加高的可行性研究

Feasibility Study of Heightening a Concrete Face Rockfill Dam Based on MSC.Marc

以华东某面板堆石坝加高工程为例,利用MSC.Marc软件的二次开发功能,结合FORTRAN接口实现非线性弹性邓肯E-B模型.通过面板坝加高前后堆石体及面板应力和变形的分析,对面板堆石坝加高问题进行可行性研究,并用经验公式验证计算的准确性.计算结果表明:坝体加高后堆石体的应力和变形规律较好,面板部分顺坡向拉应力区域转变为压应力,对坝体更为有利,加高方案安全可行.

Taking a concrete face rockfill dam（CFRD）heightening project in East China for example,by using MSC.Marc software secondary development function and combining with FORTRAN interface to achieve elastic Duncan E-B model,the feasibility study of heightening the CFRD is carried out through analyzing the stress and deformation of CFRD before and after the dam heightening,and using an empirical formula verify the accuracy of the calculation.Calculation results show that：after heightening dam,the stress and deformation law are better,the face part of the slope of from the tensile stress area transformed into compressive stress area,it is more favorable for the dam;therefore,the heightening scheme is safe and feasible.