The Application of Vacuum Preloading without Sand Cushion to Reinforce Road Soft Foundation in Dredger Fill Silt Site
The road engineering construction of dredger fill silt site is faced with the problem of soft foundation.Although the traditional vacuum preloading technology with sand cushion is effective,it has the disadvantages of high cost and long construction period.Combined with practical engineering cases,this paper discusses the ap-plication of vacuum preloading technology without sand cushion to reinforce road soft foundation in dredger fill silt site.By analyzing the measured data of vane shear test,geotechnical test and load test,the reinforcement effect of this technology on road deep and thick soft foundation is evaluated.The results show that the vacuum preloading without sand cushion can significantly improve the bearing capacity and stability of the road soft foundation within the reinforcement range,effectively control the settlement deformation,and achieve the ideal reinforcement effect.
vacuum preloadingsoft foundation treatmentrsand free cushion layeroad engineeringpost-construc-tion settlement
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