Intermittent Vacuum Preloading Technology To Reinforce Soft Soil Foundation Of Experimental Research

Land reclamation is one of the important means that coastal cities develop and utilize the ocean resources,expand and develop coastal space.It can make full use of the space of the ocean resource,and has profound development prospects.The vacuum preloading method is the main method in soft soil foundation of land reclamation now.However the vacuum preloading method to reinforce soft soil foundation reinforcement efficiency is not high,the energy consumption and construction period above there is a problem.This paper mainly studied how to use the condition of intermittent vacuum preloading method to improve the soft soil foundation reinforcement efficiency,reducing energy consumption of vacuum preloading consolidation of soft soil foundation.Through the model test method,using the self-developed test device for intermittent vacuum preloading treatment seeking optimum process combining site and establish the theoretical model,for the next process test and prepared to experiment and theory of technological innovation.In different vacuum conditions of intermittent experiment results demonstrated the characteristics of deformation of the vacuum preloading process;Find out the effective duration and interval in different vacuum conditions during the whole process of vacuum preloading is suitable for batch number;Found the intermittent process of vacuum surface settlement and different deformation law of rebound and the influence of the relationship between vacuum switch;For the engineering application of intermittent vacuum preloading technology provides the experimental basis.At the same time,it theoretically explores the mechanism of intermittent vacuum,analyzed the soil formation and rupture of the water snails were correlation with intermittent vacuum preloading,and is suitable for intermittent vacuum settlement calculation formula is put forward Through experimental and theoretical research proves that the intermittent vacuum treatment compared to continuous vacuum soft soil foundation treatment is more efficient,And can obtain obvious energy saving effect.