The Field Experiment And Theory Study Of Vacuum Preloading Method On Soft Soil Foundation

Alongside the development of society and economy, there are more and more engineering constructions on soft soil foundation, thus the techniques for ground treatment are becoming manifold day by day. During the process of engineering practice, a number of new and practical techniques have been used, among which, the vacuum preloading method is quite common and new. It has been extensively used in recent years, and it obtained both considerable engineering and economic benefits.On the basis of the developing history, current research condition and treatment principle of the vacuum preloading method, as well as, in combination with the project of the soft soil foundation improvement in QingDao Port's liquefaction chemical wharf which adopts the vacuum preloading method, the treatment steps and contents can be clearly presented. At the same time, the treatment effects can be carried out through the facts of vacuum degree, pore pressure, underground water level and foundation settlement.Meanwhile, the dynamic consolidation method is applied in QingDao Port's liquefaction chemical wharf, too. There has a chance to compare the treatment effect of the vacuum preloading method with the dynamic consolidation method. Through the contracts of the spot fieldwork and the data processing between the two methods, one conclusion can be got that the vacuum preloading method is more available in the projects.Finally, because of the foundation treatment, the surrounding soils have transformed. Some methods should be taken afterwards. And based on the analysis findings all above, some preferential designing methods have been proposed. Meanwhile, suggestions for the future research have been put forward.