湿陷性黄土地基处理——甘肃某高速为例

Treatment of collapsible Loess Foundation： a High Speed case in Gansu Province

湿陷性黄土,在我国分布广泛,在一定压力作用下受水浸湿,其结构迅速破坏而发生显著附加沉陷,导致建筑物的破坏.结合甘肃某高速项目,针对当地土质类型,提出基于土体加密法原理的地基处理方式,主要包括重锤及强夯处理、高频液压夯、冲击碾压.为类似工程提供借鉴意义.

Collapsible loess, which is widely distributed in China, is wetted by water under a certain pressure, and its structure is destroyed rapidly, resulting in significant additional subsidence,resulting in the destruction of the building. Based on a high speed project in Gansu, a foundation treatment method based on the principle of soil encryption is proposed in view of the local soil types. It mainly includes heavy hammer and dynamic compaction, high frequency hydraulic tamping and impact rolling.It provides reference for similar projects.