The Research On Mechanism Of Post-grouting Pile Technology

Post-grouting is an effective construction technology to improve bearing capacity of cast-in-place pile. Many corresponding testing results indicate that the usage of this technology can exploit the advantage of cast-in-place pile and save the fee of foundation treatment, bring obvious economic benefits. Various types of post-grouting technology are widely used in many parts of our country.The Paper discussed the impacting mechanism of the cement fluid and the soil around the pile and provides the guidance for design and construction. And this can improve the application of the technology of post-grouting.Through statistic analysis of testing results of cast-in-place piles using post-grouting technology, the mechanism of post-grouting are discussed more. The improvement coefficient of the pile using post-grouting technology is discussed, and the effect of the pile size and property of soil are analyzed, these could provide some reference to the usage of this technology.