Study on Horizontal Bearing Characteristics of Pile Foundation Under Erosion Condition
In order to study the horizontal bearing mechanical properties of pile foundation under scour conditions,the finite element model of pile group foundation under scour conditions was established,and the influence of scour depth on the horizontal displacement,bending moment and shear force of pile group was analyzed.The results show that the horizontal displacement of the front pile decreases 4.85 mm/m with the increase of pile depth,and the horizontal displacement of the back pile decreases 4.21 mm/m with the increase of pile depth.Compared with the condition without scouring,the horizontal displacement of pile body increases significantly,and the position of bending moment and shear force of pile body in front row decreases.The bending moment and reverse bending moment of pile body increased obviously,the maximum bending moment of front pile increased by 75.8%,and the maximum bending moment of back pile increased by 72.7%.When the position of the reverse bend point of the pile is reduced,the value of the shear force and the reverse shear force of the pile body increases obviously,and the maximum shear force of the front pile increases by 89.3%.The maximum shear value of the rear pile was increased by 72.1%.
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