Based on the results from Boussinesq s Equation and the theory of differential and integral calculus and limitation, the formula is derived to calculate the additional stress on the foundation under the load from abutment embankment, with detailed studies on the laws for distribution and variation of such stress.

Analysis of performance of bridge approach embankment constructed by expanded polystyrene;

In soft layers,because of the soil filling of approach roadbed,the soft soils are compressed and squeezed out laterally,resulting in the lateral pressure and the pile deflection in adjacent bridge piles and making the piles become passive ones.

To determine the bank-head s ice force of the lead-navigating bank at key position that faces the ice directly of certain water conservancy, ice model test in reduced scale is designed and carried out based on the local situation on the spot and data observed.