面板堆石坝分离式面板应力变形特性研究

为进一步研究分离式面板的技术特点,利用商业有限元分析软件ABAQUS分别对分离式和连续式面板堆石坝进行数值模拟,对满蓄期连续式面板和分离式面板的应力应变状态进行了对比分析。计算结果表明,相比于连续式面板,分离式素混凝土面板技术的应用改善了面板在满蓄期的应力分布状况,提高了混凝土面板对堆石体变形的适应能力;不同水平缝宽度对面板的整体应力应变状态影响较小,为避免局部应力过大而导致的混凝土挤压破坏,其宽度应根据变形计算进行确定。

Study on Characteristics of Stress and Deformation of Separated Face Slabs in CFRD

For a further study of the technical characteristics of separated face slabs, this paper uses the commercial finite element program ABAQUS to calculate the stresses and strains of separated face slabs and continuous face slab in CFRD, respectively. The state of stress and strain for continuous and separated face slabs in full storage period is comparative analysis. Compared with continuous face slabs, the application of separated face slabs technology improves the stress distribution of the face slabs in full storage period. The deformation adaptability of concrete face slabs to the rockfill is raised. The width of horizontal joints has little impact on the stress and strain state of face slabs. For avoiding extrusion damage caused by local overstress, its width should be determined by the deformation calculation.