Rammed bulb pile sinking pipe construction device

Abstract

The invention discloses a rammed bulb pile sinking pipe construction device, and belongs to the technical field of building foundation construction facilities. The rammed bulb pile sinking pipe construction device comprises a heavy hammer arranged above a sinking pipe, an elevating power assisting device fixed to the upper portion of the sinking pipe, and a base plate arranged on the ground. A stand column closely adjacent to a pile hole is arranged at the front end of the base plate. A pulley block is arranged on the top of the stand column. A double-drum winch is arranged at the rear portionof the base plate. A first steel wire rope and a second steel wire rope are wound around two winding drums of the double-drum winch correspondingly and are wound around the pulley block on the top ofthe stand column to be connected with the heavy hammer and the elevating power assisting device correspondingly. The elevating power assisting device and the double-drum winch are utilized for elevating the sinking pipe at the same time, enough elevating force is provided for elevating of the sinking pipe, the pile frame load is relieved, the pile frame cost is reduced in a multiplied manner, sinking pipe elevating is fast and efficient, and the construction cost is greatly reduced; and meanwhile, a locking device is utilized for conducting accurate guiding and positioning on the sinking pipe, a simple guiding barrel is replaced, and stability during sinking pipe impact is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of building foundation construction facilities, and in particular relates to a construction device for tamping and expanding piles and sinking pipes. Background technique [0002] At present, in the construction process of the rammed and expanded grouting pile foundation, there are generally the following problems in the aspect of lifting the rammed and expanded sinking pipe: [0003] 1. Concrete segregation, mud inclusion and low strength of the pile body. The underground water level of the construction ground is too high, and the water content of the soil is high. During the construction of immersed pipes, super hydrostatic pressure and even underground confined water flow are formed. Due to the insufficient lifting force of the equipment itself, the pile pipes stay in the soil for too long after the immersed pipes. Failure to pull out in time to allow water and mud to enter the immersed tube, and then po...

AI Technical Summary

Problems solved by technology

The underground water level of the construction ground is too high, and the water content of the soil is high. During the construction of immersed pipes, super hydrostatic pressure and even underground confined water flow are formed. Due to the insufficient lifting force of the equipment itself, the pile pipes stay in the soil for too long after the immersed pipes. Failure to pull out in time to allow water and mud to enter the immersed tube, and then pour concrete into it, causing concrete segregation at the pile tip, mud inclusion, and low pile strength;

[0004] 2. Pile necking problem

[0005] 3. Due to the requirement of bearing capacity, the expansion head of the designed pile body is too large, and the hoist of the equipment for tamping and expanding the sinking tube cannot reach enough lifting force, making it difficult to pull out the sinking tube or taking too long to pull out the sinking tube, and the efficiency is extremely high Low, such as increasing the power of the equipment winch to increase the lifting force of the equipment, the cost of electricity and equipment for on-site construction will be greatly increased

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