Study on the influence factors of penetration characteristics of static pressure anchor pile
Static pressure anchor pile is one of the most commonly used pile types in the field of under-ground engineering.In order to study the influence factors of penetration characteristics of static pressure anchor pile,the three-dimensional finite element model of static pressure anchor pile is established.The coupled Euler-Lagrangian(CEL)method is used,the pile-soil friction coefficient,soil cohesion,and soil elastic modulus on the jacking resistance of static pressure anchor pile are considered.In order to compare the influence of different factors,the factor sensitivity analysis is carried out.The result shows that the jacking resistance increases with the increasing of pile-soil friction coefficient,the penetration depth will affect the increasing of the jacking resistance.The jacking resistance for pile-soil friction coefficient with 0.3～0.4 increases slightly than that of the pile-soil friction coefficient with 0.2～0.3.The jacking resistance increases with the increasing of soil cohesion.The increasing of the jacking resistance under 20～30 kPa is greater than that of under 30～40 kPa.The influence of soil elastic modulus on the jacking resistance is sim-ilar to the law of pile-soil friction coefficient.The jacking resistance for soil elastic modulus with 15～25 MPa increases slightly than that of with 5～15 MPa.The pile-soil friction coefficient has the greatest in-fluence on the maximum jacking resistance,the elastic modulus of the soil is the middle,the soil cohesion is the smallest.
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