In order to investigate the influence of non-Darcian flow on the consolidation process of two-dimensional soil layer,Hansbo's flow equation was introduced to describe the flow law in saturated cohesive soil,the Terzaghi-Rendulic plane strain consolidation equation was modified,and the finite volume method numerical solution scheme was given.The consolidation characteristics of finite depth foundation under strip load were analyzed by using different Hansbo's flow parameters.The results show that Hansbo's flow retards the plane strain consolidation process,and the excess pore pressure dissipates more slowly with the increase of Hansbo's flow parameters.Therefore,the conventional consolidation analysis of two-dimensional soil layer based on Darcian flow will overestimate the consolidation rate.In addition,compared with Biot's consolidation theory,the local pore pressure increase in the initial stage of consolidation under strip load is not obvious in the Terzaghi consolidation theory framework.The research results can provide a theoretical basis for exploring a more accurate settlement prediction method for saturated cohesive soil layer.
关键词
地基基础工程/平面应变固结/饱和黏性土/Hansbo渗流/有限体积法
Key words
foundation engineering/plane-strain consolidation/saturated cohesive soil/Hansbo's flow/finite volume method
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