Steel sleeve for full sleeve working method for actively transporting waste and construction method thereof

Abstract

The invention discloses a steel sleeve for full sleeve working method for actively transporting waste, comprising several steel sleeve pipes, spiral drill stems and a drill bit for soil excavation; several spiral drill stems are axially connected from bottom to top, and axially penetrated through the inner parts of the steel sleeve pipes axially connected from bottom to top; the uppermost steel sleeve pipe is provided with a slag hole, the bottom part of the drill bit is provided with a connecting opening of a high pressure water gun; the drill bit is installed at the bottommost spiral drill stem, the blades of the spiral drill stems are fixedly connected with the inner wall of the steel sleeve pipe; when the steel sleeve pipe drives the spiral drill stem to rotate, the spiral upwards blade can convey the waste soil excavated by the drill bit to the slag hole. The steel sleeve pipe can be reformed by the steel sleeve pipe structure for Benoto working method, and a technical scheme of fixing the steel sleeve pipe with the spiral drill stem is presented, thus the excavation while soil taking during the construction process is realized, the construction efficiency is improved, and the construction time and cost are saved; the steel sleeve generates significant economic and social benefits.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a steel casing and a construction method thereof. Background technique [0002] With the advent of the vigorous development stage of China's transportation engineering construction, bridge construction has ushered in a new climax. In order to adapt to different site conditions, various bridge foundation construction methods have emerged. Pile foundation is one of the oldest foundation types. Due to the design and construction The improvement of technology and construction equipment conditions made its construction technology flourish. In the early 1940s, with the successful development of high-power drilling equipment, bored piles came out in the United States. They are used in high and heavy structures, especially bridge engineering. Among them, bored piles have become one of the most common types of piles. However, due to the difficulty in controlling the pile quality of bo...

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Problems solved by technology

[0002] With the advent of the vigorous development stage of China's transportation engineering construction, bridge construction has ushered in a new climax. In order to adapt to different site conditions, various bridge foundation construction methods have emerged. Pile foundation is one of the oldest foundation types. Due to the design and construction The improvement of technology and construction equipment conditions made its construction technology flourish. In the early 1940s, with the successful development of high-power drilling equipment, bored piles came out in the United States. They are used in high and heavy structures, especially bridge engineering. Among them, bored piles have become one of the most common types of piles. However, due to the difficulty in controlling the pile quality of bored piles on site, hole collapse is prone to occur during construction. In the early 1950s, a French company pioneered a complete set of piles. The bored pile construction method with pipe retaining wall means sinking the steel casing while digging clay or sand in the steel pipe during the hole forming process, and pouring concrete after the hole is formed. Practice has proved that it is better than ordinary bored piles. , the construction speed of this construction method is fast, the pile quality is good, and the impact on the surrounding environment is small. However, with the increase of the drilling depth, the efficiency and safety of the soil fetching by the crane suspended by the grab bucket are low, which restricts this construction method. For further development, it is necessary to improve the soil extraction method to improve construction efficiency. The existing screw conveying device uses the inertial centrifugal force provided by the rotation of the feeding screw to promote the directional movement of the material, but the construction effect of the existing device is not good.

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