Study On The Parameters Of Post-treatment Of High-fill Road Embankment Based On The Controlling Settlement Principle

With the development of infrastructure, high-fill embankment in highway construction has been more and more used. Because t the permeability of the soft soils is very small, and there is no good drainage channels in the fill loads, excess pore water pressure will increase linearly with the process of filling increases, threatening the stability of the roadbed and affecting construction progress. The post-processing technique effectively solves the problem. At present, post-processing techniques used is non-sand concrete micro-pile technology.The settlement of high embankment is the general concern of the society of the engineering. Based on previous studies, this article researches the settlement of high fill embankment which uses non-sand concrete micro-pile technology and the influence of the parameters change with the law of development. By numerical simulation, the establishment of a small pile of sand concrete post-processing model, a pile length, pile diameter, pile spacing, post-treatment fill platform height fill the finite element model, concluded that:(1) Non-sand concrete micro-pile technology, due to the good drainage of the pile, can speed up the drainage and consolidation, can decrease the total settlement; post-filling load is controlled by the composite foundation;(2) When the pile diameter, pile spacing and the post-processing platform are a fixed value, the greater length of the pile can speed up the consolidation settlement, can decrease the settlement of post-fill amount and can reduce the total settlement amount;(3) When the pile spacing, pile length and the post-processing platform are a fixed value, the greater diameter of the pile can speed up the consolidation settlement, can decrease the settlement of post-fill amount and can reduce the total settlement amount;(4) When the pile diameter, pile length and the post-processing platform are a fixed value, the smaller spacing of the pile can speed up the consolidation settlement, can decrease the settlement of post-fill amount and can reduce the total settlement amount;(5) When the pile diameter, pile length and pile spacing are a fixed value, the increased post-processing platform can reduce the total settlement and the settlement of post-fill amount.