Exploration of the Application of Dense Sand and Stone Piles in the Treatment of Blowing Fill Sand Foundation
Blowing fill sand foundation usually has high moisture content,high compressibility,and low shear strength.Therefore,foundation treatment should be carried out before engineering construction.In order to study the applicability of dense sand and gravel piles in treating blown sand foundations,this article takes the blown sand subgrade project of a newly built road as an example,based on the summary of existing experience in the application of dense sand and gravel piles,the specifications and spacing of dense sand and gravel piles were preliminarily formulated by sorting out the geological conditions on site,and a foundation treatment test section was carried out,after completion of the treatment,on-site load tests were conducted to verify the rationality of the dense sand and gravel pile foundation treatment.The results of on-site load tests and settlement monitoring indi-cate that the composite foundation formed after treatment with dense sand and gravel piles can bear loads of over 120 kPa,and its post construction settlement is significantly reduced.Therefore,the dense sand and the gravel pile used in this article has achieved significant results in treating the sand filled foundation,which can provide useful reference for similar projects.
dense sand and gravel pileblowing fill sandload testfoundation reinforcement
万方数据
维普
