An integrated construction method of oblique steel pipe cement-soil force body

Abstract

The invention discloses an integrated construction method for an oblique steel pipe and cemented soil stress body. The integrated construction method comprises the following steps that a steel pipe is installed on a guiding frame of a drilling machine, a drill bit is coaxially arranged at the end portion of the steel pipe, and the steel pipe is driven by the drilling machine to be obliquely drilled into a soil body; after the steel pipe is drilled to the preset depth, the drill bit conducts guniting when the steel pipe is drilled, and accordingly a section of cylindrical cemented soil expanding body is formed on the periphery of the steel pipe; and after the cemented soil expanding body is constructed, drilling of the steel pipe is stopped, the steel pipe is left in the cemented soil expanding body, and an integrated structure is formed by the steel pipe and the cemented soil expanding body. The integrated construction method has the beneficial effects that the oblique steel pipe and cemented soil stress body can be constructed at a time, lowering of the steel pipe is achieved, and uniform cemented soil bodies with a certain length are formed on the side wall and the end portion of the steel pipe; and construction can be finished in the soil body with the high strength, the construction procedure is simple, few mechanical devices are involved, the construction efficiency is high, and cost is low.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and in particular relates to an integrated construction method of an oblique steel pipe cement-soil force receiving body. Background technique [0002] The force-receiving body formed by steel pipe combined with cement soil is widely used in the field of construction engineering. The construction method is generally to insert the steel pipe into the soil to a predetermined depth by means of a steel pipe insertion machine, and then inject a certain amount of cement slurry into the bottom of the steel pipe with the aid of grouting equipment. , so that it forms a cement-soil enlarged body in a certain range at the bottom of the steel pipe, and then forms a steel-pipe cement-soil force body with a certain bearing capacity. When the soil strength is high, it is difficult to insert the steel pipe. It is necessary to use a drilling rig to reduce the frictional resistance of the soil, an...

AI Technical Summary

Problems solved by technology

It can be seen that the construction process of the conventional method is cumbersome, involving a variety of mechanical equipment, low construction efficiency and high cost

[0003] Sometimes oblique steel pipe cement-soil bearing body is used in engineering, but when the oblique steel pipe is constructed by conventional methods, after the steel pipe is obliquely inserted into the soil at a certain angle to a predetermined depth, the grout for bottom grouting is due to the oblique direction of the steel pipe. The reason is that it is often impossible to fill around the steel pipe around it, and it is difficult to form a uniform cement-soil expansion body, which greatly reduces the bearing capacity of the formed force-bearing body.

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