Single Pile Under Cyclic Loading, The P-y Curve

With the development of offshore engineering , pile foundation had been widely used in the offshore platform , port pier,etc.. Pile foundation should not only bear axial loading but also bear lateral loading . The role mechanism of pile and earth is very complex under lateral loading. Under reciprocating loading , the interaction relation of pile and earth are influenced by circulating frequency, the way of load addition, stress route and other. To satisfy the needs of project design, it is necessary to study for calculation method and the working properties of pile foundation under reciprocating load role.In combination with the work of < the design and technical construction rules of flexible dolphin pier in port engineering > of designing institute of water transport of transport, the data of some typical experiments of domestic and international pile foundation were analysed emphatically. Through comparion of the relation of P-Y curves between single pile and pile group under lateral loading and lateral reciprocating loading , the experience formula of P-Y curve of single pile under reciprocating loading role is put forward. By comparion , the value of calculation is good to worth with actual measurement.