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研究了复合地基固结问题,给出了变荷载及排水影响区土体内水平向渗透系数沿径向任意变化情况下散体材料桩复合地基固结一般解,讨论了复合地基固结特性。研究表明,水平向渗透系数和加载速率对复合地基固结有重要影响。加载越快,复合地基固结越快,瞬时加载时固结最快;加载越慢,桩径比(n)、扰动区大小(s)和施工扰动程度(ks/kh)对复合地基固结的影响会逐渐减弱。
The consolidation problems of composite foundations are studied. The general solutions to the consolidation of composite foundations with scattered material piles under arbitrary loads in the radial direction under variable load and the horizontal permeability coefficient of soil in drainage area are given. The consolidation characteristics of composite foundation are discussed. The results show that the horizontal permeability coefficient and loading rate have an important influence on the consolidation of composite foundation. The faster the loading is, the faster the consolidation of the composite foundation is and the faster the consolidation is. The slower the loading is, the smaller the loading ratio (n), the size of disturbance zone (s) and the degree of construction disturbance (ks / kh) The impact will gradually diminish.