| Along with the gradual development of the western development strategy and a sharp rise in the number of Bridges across the northern shaanxi loess gully terrain,most of them are in gully slope section of pile foundation,makes a drop in its relatively flat slope vertical bearing capacity of the pile foundation.In this paper,the finite element software for the loess gully terrain modeling analysis of pile foundation,the research of the loess gully terrain factors influencing the vertical bearing capacity of the pile foundation and the practical calculation method,research on the following several aspects:Firstly,through the theoretical analysis,and compare flat slope and slope pile foundation bearing capacity characteristics,obtained the flat slope and slope pile foundation bearing characteristics influence factors and law.Secondly,using the finite element software to model,calculate the various working conditions,pile foundation load-bearing characteristics change;Get the ultimate bearing capacity of the pile foundation slope and slope,slope distance are different in the degree of relationship,and summarized the influence law of various factors.Finally,this paper studies the loess gully bridge pile foundation bearing capacity and the relationship between various influencing factors,the slope ratio with flat slope ultimate bearing capacity of pile foundation engineering application form,and combined with empirical formula and calculation results,summed up the reasonable pile length calculation formula.In practical engineering,can according to the design and calculation method of the traditional first determine the bearing capacity of flat slope pile foundation,and then according to the practical slope and slope in the distance,adopt the method of interpolation in the table to take the corresponding adjustment coefficient,determine the bearing capacity of pile foundation slope,according to the condition of the pile location at the same time,the reasonable pile length calculation. |
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