The cage multi-directional cutting mixing pile is an improved large-diameter single-axis mixing pile. By adding a cage with blades on the outside of the mixing shaft,Use inside and outsidestirThe leaves allow the soft soil and curing agent to be fully cut and stirred, thus greatly improving the pile quality and strength, as shown in the figure1Shown below.
figure1 Model drawing of cage multi - directional cutting and stirring pile
The traditional uniaxial mixing pile has some problems, such as low bearing capacity and poor pile quality caused by uneven mixing and less mixing times, especially in soft soil with high water content such as silt, which often exists the phenomenon of "holding drill", and the reinforcement effect is very poor. In order to solve the above problems, our company independently developed the cage multi-direction cutting and mixing pile, which has the following advantages:
1.Internal and external mixing blades can fully cut and break the soil, so as to solve the problem of soft soil"Hold drill"The problem.
2.The relative movement of the internal and external stirring blades makes the soil and reinforcement slurry fully stirred, which greatly improves the quality and strength of the pile.
3.The pile diameter is large and can be reached2~2.5m, the construction efficiency is fast.
4.Intelligent control of construction parameters in pile forming process ensures infiltration of soft soil curing agent grouttheEffectiveness.
5.The construction cost is cheap, because the construction efficiency is fast, compared with the traditional mixing pile technology, the construction cost is low.
The above characteristics make the cage-type multi-direction cutting and mixing piles outstanding in the foundation engineering of soft soil areas such as Shanghai, Wenzhou, Zhuhai and FoshanThe application effect of. figure3Shown is the reinforcement of a soft foundation reinforcement project in WenzhouBefore and afterCompared with the photos, the soil in Wenzhou area is very poor, and the average moisture content of silt exceeds60%, high thixotropy, the foundation bearing capacity before treatment is very low, not more than50kPaThe equipment is difficult to stand on. By the cageAfter the multi-direction cutting and mixing pile reinforcement, the bearing capacity of the foundation is greatly improved, and the large equipment such as pile driving and pile frame can walk on it to meet the construction requirements.
figure2 cageSite photo of multi - directional cutting and mixing pile
(a) effect before reinforcement (b) after reinforcement effect
figure3 Wenzhou a soft baseHardening Item Comparison photo before and after hardening
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:400-1002850
