Research on Horizontal Bearing Characteristics of Bridge Pile Foundations Considering Pile-soil Friction Effect
In order to study the influence of pile-soil effect on the mechanical properties of bridge large-diameter piles under horizontal load,this paper combined with the project of large-diameter pile foundation of Maojiacun Reservoir Bridge on the newly-built Chongqing-Kunming High-speed Railway,uses the theoretical analysis method,based on the elastic foundation beam model and p-y curve method to solve the horizontal bearing capacity of the pile foundation,and takes the effect of pile-soil friction into account,compared theoretical values with on-site measured values,studied parameters of the friction angle at the pile-soil interface and the pile diameter.The results indicate that,the horizontal bearing capacity of the pile top and the maximum bending moment of the pile body are considered,when considering the pile-soil friction effect(κ=0.6φ),the comparison between the calculated value and the measured value is good.As the friction angle between the pile-soil interface increases,the pile side friction resistance,additional axial force on the pile body,and additional bending moment on the pile body also continue to increase,as the pile diameter increases,the pile top displacement reduction ratio and the maximum bending moment reduction ratio of the pile body both linearly decrease.
bridgespile foundationshorizontal bearing capacitypile-soil friction effectbending moment
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NSTL
万方数据
维普
