Three axisMixing pileIs one of the long bored pile construction process, there are three bored pile machine at the same time, construction of three spiral drill down construction at the same time, is generally used in underground continuous wall method is used, is an effective form of soft foundation treatment, use of the cement mixing pile machine into the soil and fully mixing, cement and soil produces a series of physical and chemical reaction, make the soft soil scleroma and improve the foundation strength.

Function:

Three axisMixing pileIt plays an important role in foundation pit enclosure engineering. It is a kind of intermediate uninserted steel, which is only used for water stop. If soil retaining is needed, it should be combined with other technologies. One is stirring pile body insertionHSection steel (commonly known asSMWConstruction method) can not only play a water stop can also be used as a retaining wall, suitable for digging deep shallow foundation pit.

Advantages:

Three axisMixing pileCompared with piles of other supporting forms, the construction speed is fast, and the piling time of each frame is about30-40Minutes (24Completed in hours60mOr so); The sealing effect after pile formation is remarkable; Mechanical automatic control, simple operation procedure; Less labor input, low construction cost; In addition, the construction of the three-axis mixing pile can be carried out after the trench excavation is completed, and there is no need for the mud pool on site, so the safety and civilization of the construction site are guaranteed. After inserting the section steel, the three-axis mixing pile plays the role of water stop and support. At the same time, the section steel can be recycled.

Disadvantages:

The installation time of three-axis stirring machinery and auxiliary facilities is required10About days, and this machinery and auxiliary facilities need a large work site, large cement storage capacity, and large electricity consumption, a500KwThe transformer can only supply the operation of a three-axis mixer. The construction of three axes also needs to consider the geological conditions, suitable for the treatment of silt, silt soil, peat soil and silt soil.

Construction method of three-axis mixing pile

cementMixing pileIt can be divided into wet method and dry method according to the state of material injection. The wet method is based on cement slurry, which is mixed evenly, easy to be mixed, and the hardening time of cement soil is longer. Dry method is mainly cement powder, cement soil hardening time is short, can improve the pile Strength, but mixing uniformity is not good, difficult to stir the whole process. Wet method is the main method.

The selection of wet method and dry method is determined by the soil moisture content provided by the geological survey report and the construction site environment.

Construction preparation of three-axis mixing pile

The slurry mixture ratio of the three-axis mixing pile must be reported to the local construction engineering quality testing center for verification in advance, and the verification results shall meet the requirements of the design document and be submitted to the supervision for acceptance approval before construction can begin.

Organize TECHNICAL PERSONNEL TO LEARN practical construction ORGANIZATION DESIGN, read and review construction drawings, clarify relevant technical issues, and get familiar with specifications and technical standards before commencement of construction. Formulate construction safety assurance measures and put forward emergency plans. To the construction personnel safety technology disclosure, to participate in the construction personnel before the job training, after passing the examination and certificate on the job.

After entering the site, the three-axis mixing pile machine must be tested by the local construction engineering testing center and then reported to the local safety supervision department for record and to the supervision for acceptance. The relevant instruments and meters must be tested by the local measurement and testing unit and then reported to the supervision for acceptance.

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