Research of Calculation Models for Group Pile Foundation of Continuous Rigid-Frame Bridge

The group pile foundation is one of the foundation types that are most commonly used for continuous rigid-frame bridge.In this paper,several methods for establishing calculation models for the group pile foundation are analyzed and discussed,and the considerations for establishing the models and ways to select parameters for the models are provided.To cater for the needs of the prestressed concrete continuous rigid-frame bridge of Sutong Bridge over the secondary navigable channel,the calculation models that take into account of joint action of both the group pile foundations and superstructure are proposed,and the calculation results with the models are then analytically compared to those disregarding the action of the pile foundations.The calculation methods herewith can serve as direct reference to the calculation of similar structures.