旋喷桩加固湿陷性黄土地基的施工技术

湿陷性黄土地基遇水容易塌陷,而黄土能成为旋喷固结体很好的骨料,采用旋喷桩加固地基,可使地基承载力提高104倍以上,并可避免明挖基础带来的不利因素.此外,旋喷桩施工灵活,操作方便,用途广泛,既可用在构筑物兴建之前,也可用在构筑物修建之中.尤其是应用于既有建筑的地基加固,均不会损害构筑物上部结构,具有显著的经济、社会效益,值得推广.

Construction Technique of Reinforcement Wet Yellow Soil Foundation by Spiral Injection Piles

The wet yellow soil foundation sinks easily when meet water, and yellow soil become the main material for spiral injection piles. Application of spiral injection piles in reinforcement foundation can boost its bearing force, about ten times bigger than before, it also can avoid disadvantage factors during foundation construction. Besides, spiral injection pile has many advantages, such as construction convenience, having many purposes and so on, it not only can be used before building construction, but also can be used in the process of construction, especially for exit foundation reinforcement, for the above advantages and its obvious economic and social benefits, it will be used more and more in the future.