Analysis Of The Deformation Of High-Pile Wharf Under The Effect Of Rear Yard Load

Nowadays, the slope deformation of the High-Pile Wharf has brought great effect on the wharf structure and this phenomenon is increasingly attracting the attention of engineering. Especially in soft-soil area, with surface loads on the rear yard of the wharf, an outstanding horizontal movement of soft-soil will appear. As a result, the movement exerts great horizontal pressure on the piles and leads to the lateral deformation of the piles. So, it is necessary to correctly figure out the principle of interaction between piles and soil and precisely evaluate the magnitude of the horizontal pressure on piles, which could avoid security risks and insure the safety use of high-pile wharf in the long run.The main research work of this paper is to establish the three-dimensional finite element model of the pile-soil interaction of wharf by the finite element analysis software ABAQUS, and simulate the impact that the wharf slope exerts on the bent-piles under effect of the surface loads on rear yard. The elastic-plastic and creep deformation of the soil and interaction between piles and soil are considered in this numerical model. There two kinds of models, the elastic-plastic model and creep model, are established for comparative analysis.(1)In elastic-plastic model, soil material is simulated by the linear Drucker-Prager soil model. The emphasis focus of this model is surface load type, soil properties geometry properties of the bent-piles. And then analyze the effects of these factors exerting on the piles deformation.(2)In the creep model, soil model is considered as coupled elastic-plastic creep model, both D-P model and Singh-Mitchell creep model is used to simulate soil materials. Through analyzing the creep model, creep deformation characteristics of soil and the displacement and deformation variation characteristics of piles with time is abstracted form the results . Moreover, some further research about the effects of some factors exerting on the piles deformation is also specified in this process.The simulation results are generally consistent with the actual situation and would provide some guiding advice for design and optimization of High-Pile Wharf structure.