Analysis On Horizontal Bearing Characteristics Of Large Diameter Piles

The research on pile-soil interaction mechanism under lateral load has a history of only 50 years. Owing to the limitation of construction period, cost, experimental equipments and conditions, the horizontal static loading tests often stopped before the test pile reached it horizontal bearing capacity. Most researches analyzed by comparing the results between test and finite element simulation,but over-simplification in the process of building the finite element model tending to make great differences between the simulation results and actual project.So far,domestic researches in this area are relatively backward.This paper will analyze by combining the test results of large diameter piles in a power plant under lateral load,discussing the lateral bearing capacity of large diameter piles.According to the results,summarize the deformation and moment vary discipline with load development of large diameter piles under lateral load.For further analysis on pile-soil interaction mechanism under lateral load, finite element software is used for numerical simulation of laterally loaded piles.In the numerical simulation,contact features between large diameter piles and soil are considered so that the actual behavior of laterally loaded piles can be better reflected.The good coincidence between simulation result and measured data indicates that the model is effective and reliable.Finally,further discipline on mechanical characteristics of laterally loaded piles is probed by changing the pile diameter,pile material modulus, soil parameters (c,(?)) and soil modulus.The conclusion can be applied in practical engineering which will certainly help further research on large diameter piles under lateral load.