Construction device for changing soil body outside pile and construction method thereof

Abstract

The invention belongs to the field of building construction, and particularly relates to a construction device for changing a soil body outside a pile and a construction method thereof. The construction device mainly comprises a pile machine, a traction rope power wheel, a traction rope, a power head, an extrusion drilling tool, a rotary joint, a storage box, a ventilation pipe and a wind source. According to the construction device for changing the soil body outside the pile and the construction method thereof, the extrusion drilling tool is further provided with a flow guide air channel, soil body environment around a pile body is changed through the construction technology that drilling and flow guide air channel feeding are carried out at the same time, the anti-shearing force of the soil body around the pile body is increased, and therefore the soil body structure around the pile body is changed; the technical problems that in an existing pile forming process, pile body concrete and a stratum soil body are prone to being separated, and adaptability does not exist are solved, the technical effect that large pile body bearing capacity can be achieved through small equipment is achieved, and by means of the method, pile forming equipment is smaller in size, lower in power consumption and more environmentally friendly.

Description

technical field [0001] The present invention relates to a field that can be widely used in construction engineering, bridge engineering, municipal engineering, water conservancy engineering and other fields that require foundation bearing capacity. Specifically, it relates to a construction device and a construction method for changing the soil outside the pile. . Background technique [0002] With the accelerated development of cities and the increasing number of high-rise buildings, higher requirements are placed on the bearing capacity of piles. [0003] The existing method to increase the bearing capacity of piles is to use drilling tools with large diameters and long piles to drive piles. However, it is obviously uneconomical to meet market demand by expanding the pile diameter of the equipment and increasing the soil squeezing torque, because the pile driving equipment increases. , which will inevitably lead to longer transportation and installation periods and increa...

AI Technical Summary

Problems solved by technology

[0003] The existing method to increase the bearing capacity of piles is to use drilling tools with large diameters and long piles to drive piles. However, it is obviously uneconomical to meet market demand by expanding the pile diameter of the equipment and increasing the soil squeezing torque, because the pile driving equipment increases. , which will inevitably lead to longer transportation and installation periods and increased energy consumption

[0004] Secondly, the existing piling machine only directly drills the drilling tool to the preset depth, and then lifts the drill and pumps the concrete to form a pile. The disadvantage of this piling process is that the purpose of drilling is single, and the function of drilling is not fully utilized.

This construction technology does not change the shear force of the soil around the pile body. After the pile is formed, the concrete of the pile body is easily separated from the soil around the pile body and has no adaptability, which weakens the bearing capacity and side friction resistance of the pile body.

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