Nonlinear FEM Analysis Of Biot Concretion Theory And Reuniting Foundation On Soft Foundation Reinforce Of Throughway

In recent years, the development of our country's throughway is quick, especially in the coastal areas. Because the distribution of soft soil is very widely, the sliding strength of soft soil is low, the moisture content of soft soil is rich, and the compression of soft soil is large, the handling of soft base is an important problem. There are many ways to handle the soft soil, such as: use the sand mat as a layer, carry to press in advance, press by thin film in the vacuum in advance, drain by use the sand well, drain by plastics plank, and reunite the foundation.The usually way to deal with soft soil is reuniting foundation method. The concept of the reuniting foundation is that setting some reinforcement body in or adding some hi-strength material in natural foundation. So the reinforcing area is consist by natural foundation and reinforcement body. The characters of reuniting foundation are that the reinforcing area is uneven; anisotropy, and the foundation will bear the loads with the reinforcement body under the loads. The paper can apply finite element method in the research of reuniting foundation. And, work out a program. The program can analyze the coactions of pile and soil, simulate the process of construction, and consider the two dimensional Biot concretion. The paper can concern the soil's instantaneous fallout , soil's main settlement due to concretion, and the coactions of soil and pile by applying the contact surface to simulate the coactions. The paper can analyze the service behavior of reuniting foundation and the effect of the pile's intensity, length and distance. The paper is concerned with the stressing of pile and the arrangement of pile for the smaller cost to fit the subsidence of throughway.