The thesis investigates the mechanisms and the magnitude of the settlement and the rate of consolidation are obtained by using the biot ' s theory of consolidation in such kind of combined composite foundation 本文分析了组合型复合地基的加固机理,并用biot理论对组合型复合地基的承载力、沉降量及沉降速率进行了计算,并将它和碎石桩、 cfg桩进行了比较。
However , although soft calyey soil stratum is actually layered with non - linear and rheological propertis , no theory of consolidation is available so far that can take consideration of all these basic properties of soft soils but only one or two of them 然而,虽然非线性、流变、成层性是实际软粘土的最基本特性,现有的各种固结理论仍不能将之同时考虑,而仅能考虑其一或其二。
Using the biot ' s theory of consolidation , a nonlinear seepage - deformation coupled fem program is adopted which is used to calculate the stresses , settlement and drainage - consolidation of a foundation which can be simplified as a plane or axial symmetry problem 本文根据biot固结理论,采用了可以考虑渗流与变形耦合的非线性有限元程序,可以对地基的应力、应变和排水固结问题(包括平面和轴对称问题)进行非线性计算。
In addition , based on the biot theory of consolidation and considered the influence of seepage on deep foundation pit excavation , the mathematics model is established , which is applied to the coupling of seepage and stress and considers the free surface of seepage . it is understood that the influence on the stability of foundation pit by groundwater seepage formed during deep foundation pit excavation 考虑到渗流对基坑开挖的影响,在biot固结理论的基础上对基坑开挖进行了渗流场与应力场耦合分析,建立了耦合计算模型,由此分析在深基坑开挖过程中,由降水形成的地下水渗流对基坑开挖稳定性的影响。