The Length Of Pile Composite Foundation Is Analyzed By Numerical Simulation

With the development of the society, more and more the project need to deal withthe foundation, in order to satisfy the requirement of foundation bearing capacity anddeformation of the buildings. People gradually found that use of a single pile forfoundation for processing already can’t satisfy the engineering requirement, the lengthof pile composite foundation was born, and quickly occupied a place in the groundtreatment method, and its status is also rising. However, the time length of pilecomposite foundation is very short, people for its theoretical research is not perfectenough. The current theory research is far from meet the needs of the actual engineeringtheory.On the basis of predecessors’ research results, in this paper, the length of pilecomposite foundation has carried on the detailed introduction, including the calculationmethod of its bearing capacity and deformation. Using FLAC3d software simulationanalysis was carried out on the length of pile composite foundation, through changingthe parameters of the length of pile, can draw the following research results:(1) the mattress layer plays an important role in the length of pile compositefoundation. By adjusting the thickness of the mattress layer to adjust the load ratio ofpiles and soil, and control the foundation settlement.(2) the long pile is the most important in the length of pile composite foundationbearing structure. The change of its length and diameter can be directly decide thefoundation bearing capacity. And long pile is also the main unit to control thesubsidence. The change of its length has a decisive influence on the basis of settlement,pile diameter changes also have important influence on settlement.(3) is the main purpose of short pile reinforcing shallow soft soil, and improved theperformance of the upper foundation soil, increase the bearing capacity of foundationsoil.