Six shaft stirring pileIt is a new type of soil-cement pile developed in Shanghai strong foundation. It inherits the principle of biaxial mixing pile and the advantages of less displacement soil, small water-cement ratio and low cost. It overcomes the defects of biaxial and triaxial mixing pile, such as low work efficiency, low automation degree of pile foundation, high labor intensity of workers and poor mechanical safety performance.
Construction method:
1The construction of six-axis mixing pile adopts the method of socket and one hole construction. The shaded part is the repeated casing drill, and finally the section steel is inserted according to the design requirements.
2The construction of pile mixing adopts the method of drilling and lifting once, for the depth of pile bottom above2Meter range increase2(for grouting and mixing).
Cement slurry should be injected into the six-axis cement mixing pile in the process of sinking and lifting0.6m/min, to increase the mixing speed press1m/minTo avoid vacuum negative pressure and hole wall collapse due to too fast lifting.
When it is raised to the elevation of pile top, continuous grouting and re-stirring shall be carried out for a time of no less than30S.
3The cement of five-axis mixing pile is canned cement. The slurry is mixed by automatic slurry mixing system controlled by computer. The water-cement ratio of cement slurry is1.2, cement incorporation ratio is20％, the grouting pressure is1.5Mpa～2.5Mpa, to the slurry conveying capacity control; When drilling and mixing, it is continuous pressurized cement slurry, and the grouting amount is rated during drilling63%～65%, the grouting amount is rated during stirring35%～37%.
Shanghai Qiangqiang Foundation Engineering Co., LTD. 's business covers foundation pit engineering, pile foundation engineering, land and waterFoundation treatment , slope treatment and other engineering fields. Around" Excellent technology, reliable process ", construction fast "technical requirements, Is to provide customers with land, water foundation engineering technical consultation, construction services and other comprehensive solutions of the entity enterprise.Contact Number: 400-100-2850
