Study Of Application And FE Analysis Of Designing Method Of Settlement-controlled Composite Piled Foundation

Multilayer buildings or constructions on soft ground bearing heavier load may not meet the deformation of the foundation during many situations. Terefore, the disposal of the foundation is very important. Usually we use the traditional method that the piles bear the totally load. As a result, this methods will requires more piles and make even higher cost. In this paper, another method is applied to lower the cost.Considering the conventional designing method of composite piled foundation only compute the bearing of piles and it makes higher cost. Through the study of the soft soil foundation, a complete designing method has been advanced to choose the number of piles on the basis of allowable settlement for the composite piled foundation, that is, to be settlement-controlled composite piled foundation. The paper introduces the basic principles and procedures of the design method taking settlement-controlled as the key objective.Then, the calculation process is presented by using it to a project example and the numerical calculation is also made by finite element software. Using the software ABAQUS to analyze the whole process, the simulation results consist well with the designed ones. Compared with the conventional design method, it shows great economic predominance.