Application of Jet Grouting Reinforced Cement-soil Pile-Anchor Support Technology in Deep Foundation Pit Engineering

The jet grouting anchor, a new technology which combines large-diameter cement-soil pile with conventional anchor, is usually applied in the foundation pit support in soft soil. Compared with conventional anchor, it has advantages for large-diameter and high bearing capacity. Then the displacement of excavation can be controlled effectively. Connecting the application of jet grouting reinforced cement-soil pile-anchor during an engineering case, the paper introduces briefly this support technology and analyzes the control effect of pit deformation by monitoring wall top horizontal displacement and the soil deep horizontal displacement. The results show this support form is safe and economic. It could provide references and suggestions for similar projects.