Numerical Analysis of Settlement Reducing Pile Foundation on Settlement Influence Factors and Optimum Design Methods
|School||Shandong Institute of Architecture|
|Keywords||Composite pile foundation REDUCING PILE Cushion Numerical Simulation Number of plant analysis Differential settlement Settlement Calculation|
With the development of urbanization , high-rise building more and more widely . Pile in the application of high-rise buildings has its own superiority , pile widely used in such buildings , especially in some of the softer soil , natural foundation bearing capacity to meet the requirements in the construction of high-rise buildings , circumstances, will have a greater sedimentation . Traditional pile design does not consider the carrying capacity of soil between piles , pile accept full load, and less Shen pile foundation design concept of single pile force close to the ultimate bearing capacity and consider the carrying capacity of the pile Guests . Therefore , how to control the settlement is key to the design . By FLAC 3D REDUCING PILE numerical simulation analysis on the basis of the following major elements : (1) this paper, a comprehensive analysis of the literature at home and abroad , and numerical analysis using FLAC 3D ( three - dimensional fast Lagrangian finite difference method ) , load parameters of soil between piles , pile length , pile diameter , pile stiffness , pile size , the thickness of the cushion and cushion elastic modulus and other factors on the single pile , the analysis of pile groups do bedding. (2 ) the raft by Shen pile numerical simulation and analysis of model pile group to analyze the effects of settlement of the pile spacing and form of variable length of the pile fabric pile , draw an effective way to control settlement . (3) the analysis of each factor , the parameters change and subsidence curves , summed up the law of settlement with the parameters change . (4 ) combined with a practical project , considering each factor using FLAC 3D piled raft foundation was numerically simulated and calculated in accordance with the less Shen pile , its settlement calculation . Through comparative analysis , several of the proposed to reduce settlement reached reduce settlement and eliminate the differential settlement purposes , and greatly reducing the number of piles , the project cost savings , so as to achieve the purpose of optimal design .