Indoor Model Experiment About The Mechanic Function Of Reinforced Soil-cement Pile

Reinforced soil-cement pile which digs section steel or steel cage into deep soil-cement mixing pile usually works with anchor as slope supporting structure to protect the safety of slope and to keep off the groundwater. In generally, it applies to the pit slope supporting where is plentiful of groundwater. Reinforced soil-cement pile compacts supporting structure with de-water wall and has the advantages of safety, reliability, convenient of construction, less price, less time limit , that overcomes the shortcoming of normal pile-anchor supporting system which can not keep off the groundwater. In this paper we found the fix parameter of soil-cement in particular soil in Beijing area and the better steel rate of reinforced soil-cement pile using in pit supporting through testing the bending resist function of reinforced soil-cement pile model, which provided a good foundation of the applying of reinforced soil-cement pile in the project of pit supporting where plentiful of groundwater and narrow in cities.The soil-cement intensity is decided from cultivate date and cement content, and the water content has some influence also which could not be too low to reduce the intensity and the cave rate and make difficulty in construction, or too high the same. Reinforced soil-cement beam can sustain 1~2 times of bending force, according which we can deduce that in Beijing using reinforced soil-cement pile to support pit in 10 meters is suitable for dewater needs, bending force strength and pit stability. The expression of joint work by steal and soil-cement is resist pull force by steal and push force by soil-cement. The stress of soil-cement is main limit of resist ability of pile. In the experiment, the resist ability of model beam raise obviously when the steal rate comes from 0.5 to 0.75 percent.