Device for cleaning soil between piles of long screw pile-reinforced soft soil layer roadbed and cleaning method

Abstract

The invention discloses a device for cleaning soil between the piles of a long screw pile-reinforced soft soil layer roadbed and a cleaning method, and solves the problems that the cleaning workload of the soil between the piles is high and the shape and size of a cast-in-place pile cap are difficult to control. The device for cleaning the soil between the piles is assembled firstly, and then thedevice is used for carrying out mechanized cleaning work on the soil between the piles; a drive motor (3) is started to cause the output shaft of the drive motor to drive a lead screw (8) to rotate clockwise, a lead screw nut (9) rotates downwards to move, a sleeve (13) rotates to be sleeved on a pile head (12), five pieces of spiral cutting blades, which are in an equal interval radian, are welded on an outer side wall of the sleeve, and a soil body around the pile head is dug out to form an outer ring direction operation space of the pile head; the control power source of the drive motor isswitched on in a reverse direction so as to cause the output shaft of the drive motor to drive the lead screw to rotate anticlockwise, the lead screw nut rotates upwards to move along the lead screw,and the sleeve is driven by the lead screw nut to move upwards while rotating so as to switch off the power source of the drive motor. The method has the characteristics of high construction efficiency and low cost.

Description

technical field [0001] The invention relates to a device for cleaning the soil between concrete long screw piles for reinforcing soft soil subgrades, in particular to a process of constructing concrete long screw piles (CFG piles) when the foundation soil layer is reinforced in soft soil foundations Among them, a device and a cleaning method for cleaning the inter-pile soil between the pile heads. Background technique [0002] In roadbed construction, soft soil foundations are often encountered, and such soil roadbeds must be reinforced; the most common reinforcement method is: laying concrete long screw piles (CFG piles) in the soil layer of soft soil roadbeds, Reinforce the soil layer; the concrete long screw pile (CFG pile) is composed of a pile body and a pile cap. The pile cap is set on the top of the pile body. The diameter of the pile cap is larger than the diameter of the pile body. The construction method of the cap is as follows: after the concrete of the pile bod...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for mechanical cleaning of soil between piles for reinforcement treatment of long spiral piles in soft soil layer subgrade, which solves the technical problems of large manual cleaning workload of soil between piles and difficulty in controlling the shape and size of cast-in-place pile caps

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