Abstract：In high concrete-faced rockfill dams(CFRDs)，soft longitudinal joint is an engineering measure widely applied to avoid extrusion damage of the concrete faces. Based on analyzing the compressive features of the soft filler in normal direction，a bilinear compression model was proposed. During the simulation，the soft longitudinal joints are treated as soft contact interfaces，where the penetration represents compressive displacement. Applying the computational contact mechanics，the perturbed Lagrange formulation was proposed to develop a soft joint contact algorithm. The effectiveness of this algorithm was verified by a three-dimensional contact patch test，and then it was applied to Tianshengqiao–I CFRD in China. The numerical results show that soft longitudinal joints can significantly reduce the axial extrusion stress of the concrete faces.
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ZHOU Mozhen，ZHANG Bingyin，WANG Wei. Algorithm and simulation methods for the soft longitudinal joint of the concrete faces in high concrete-faced rockfill dams. , 2016, 35(S1): 2803-2810.
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2016, Vol. 35 
