Research on Vertical Bearing Characteristics of Pile Foundation of Bridge in Service Under Erosion Condition
In order to analyze the bearing characteristics of bridge pile foundation under scouring conditions,the axial force and friction distri-bution of pile under different scouring depth and at different positions were analyzed.The results show that when the scour depth is 1 times the pile diameter,the rebound of pile is 6 mm and the drop rate of pile displacement is 0.005 mm/kN.When the scour depth is 6 times the pile diameter,the rebound of pile reaches 23 mm,and the drop rate of pile displacement is 0.010 3 mm/kN.That is,the greater the scour depth,the higher the rebound of pile and the greater the displacement and fall rate of pile.The axial force and pile side friction are displayed as corner pile>side pile>middle pile,and the gap between the axial force and pile side friction decreases with the increase of pile depth.
Bridge in servicePile foundationScouring conditionsBearing characteristicsAxial forceFrictional resistance
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