Finite Element Modeling and Dynamic Mode Characteristics of Pile-Slab Structure

Pile-type subgrade is a new type of subgrade structure proposed in recent years, compared with the soil roadbed, it has the advantages of small post-construction settlement, high overall rigidity and high smoothness. This article combines the design example of pile-type roadbed engineering, considering the nonlinearity of the structure, establishing a three-dimensional finite element model of a pile-slab subgrade using large-scale finite element analysis software SAP2000. The space beam unit is used to simulate the pier column, the board unit simulates the bridge deck, and the bridge pier and the bridge deck are simulated by BODY. Dynamic analysis of the model in order to get some useful conclusions.