Construction technology of pressure grouting pile

A, pressureThe characteristics of the pile:

1,Strong adaptability:The PILE TYPE IS SUITABLE FOR CLAY SOIL, SILT SOIL, fill soil AND other soil, and can be used for pile formation under complex geological conditions such as reduced diameter soft soil, flowing sand layer, sand pebble layer and groundwater.

2Pile quality is good: due to the concrete from the center of the drill pipe into the hole, the concrete has the characteristics of dense, constant pile, no shrinkage neck, and can penetrate, compaction pile hole around the soil.

3,High bearing capacity of single pile:Because the hole formation is formed by continuous pressure irrigation superfluid concrete wall, it can permeate and compact the soil around the pile hole, so as to improve the lateral friction resistance of the soil around the pile, so that the pile foundation has strong bearing capacity, pull force and horizontal resistance, small deformation and good stability.

Two, pressure irrigation pile construction process

The long auger drilling pile is a kind of reinforced concrete cast-in-place pile, which uses the long auger drilling machine to drill to the design depth, and at the same time, the concrete pump is used to press the concrete into the pile hole with a certain pressure. After the concrete is poured to the set elevation, the reinforced cage is inserted into the concrete to the design elevation with the help of special vibration equipment. The technological process is shown in the figure.

Three, construction site requirements

1, in the reduced diameter soft soil, sand layer, sand pebble layer, groundwater and other complex geological conditions, can be used to pile clay, silt, fill soil and other soil.

2, the construction site should be smooth and compact.

3The deep foundation is resistant to internal piling and needs drainage and precipitation. The hole drilled by the deep hole pile should be removed by the scraper or excavator in time.

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