Piling anti-jamming sinking pipe of cast-in-situ pile and its construction technology

Abstract

The invention discloses a pile-toe-blocking prevention immersed tube of a filling pile and a construction technology thereof. The pile-toe-blocking prevention immersed tube comprises an immersed tube body (1), a reinforced concrete pile toe (3) and a steel clamping strip (4). A radial through open groove (2) is formed in the bottom end of the immersed tube body (1), the steel clamping strip (4) is clamped into the open groove (2), the lower side face of the steel clamping strip (4) makes contact with the upper end face of the reinforcement concrete pile toe (3), and one end of the steel clamping strip (4) is connected with the immersed tube body (1) through a connecting assembly in the vertical direction in a rotating mode. The construction technology includes the steps of assembling the connecting assembly, welding the connecting assembly to the immersed tube body, pressing the pile and pulling out the tube. By the adoption of the structure and the construction technology, because the connecting assembly and the steel clamping strip are easy to assemble, and can be repeatedly used, on one hand, the construction cost can be greatly lowered, on the other hand, assembling and disassembling are convenient, construction requirements are greatly lowered, and then the construction efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of pile foundation construction in building construction, in particular to a pile tip anti-jamming sinking pipe of cast-in-situ piles and a construction process thereof. Background technique [0002] Immersed tube cast-in-place pile is one of many types of pile foundation construction in civil engineering engineering. It is also called driven cast-in-place pile. It uses pile sinking equipment to sink steel pipes with reinforced concrete pile tips into the soil to form piles. Then put in the reinforcement frame and pour concrete, then pull out the casing, and use the vibration when pulling out the pipe to compact the concrete, thus forming the required cast-in-place pile. The use of hammering pile sinking equipment to sink and pull pipes into piles is called hammer sinking pipe piles; using vibrators to vibrate pipe sinking and pipe pulling to form piles is called vibrating pipe sinking piles. No matter what...

AI Technical Summary

Problems solved by technology

No matter what kind of cast-in-place piles, this kind of cast-in-situ piles with reinforced concrete pile tips encounter complex geological conditions during the sinking process, such as strata with large boulders and thick sand layers. It is necessary to increase the pressure of the pile sinking, which will cause the reinforced concrete pile tip to bear excessive force and cause fragmentation. These fragmented concrete fragments will be stuck in the sinking tube and are not easy to take out, so it needs to pass through oxygen. Cutting the gravel stuck part of the immersed tube, on the one hand, increases the construction difficulty and prolongs the construction time, resulting in low construction efficiency; on the other hand, it also increases the construction cost accordingly

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