Small-diameter steel pipe pile side static-pressure hoop device

Abstract

The invention discloses a small-diameter steel pipe pile side static-pressure hoop device. The device comprises two concave steel pipe sleeve clamps, two sleeve clamp fixing devices, two static-pressure plates and two fixed rods; the two concave steel pipe sleeve clamps are combined and spliced to form a cylinder; the outer sides of the two concave steel pipe sleeve clamps are separately fixed on the corresponding sleeve clamp fixing devices; the static-pressure plates are separately arranged on the outer sides of the two sleeve clamp fixing devices; two ends of the bottoms of the static-pressure plates on two sides are fixedly connected through the fixed rods; and the fixed rods transversely penetrate through the two sleeve clamp fixing devices. The small-diameter steel pipe pile side static-pressure hoop device adopts the pile side pressure application to transfer the pile top static-pressure position to the static-pressure plate positions on two sides of a hoop so as to solve the deformation problem caused by local pressure of a pile head; and the small-diameter steel pipe pile side static-pressure hoop device can continuously change the clamping position, has no need to cut off more steel pipes under the condition of height limit, effectively reduces the joint number of steel pipe piles, and improves the working efficiency.

Description

technical field [0001] The invention relates to the technical field of steel pipe piles, in particular to a small-diameter steel pipe pile side static pressure collar device. Background technique [0002] Small-diameter steel pipe piles are widely used in the foundation and foundation reinforcement of small buildings and structures. Steel pipe piles can be divided into two types: hammering and static pressure according to the construction method. The hammering and static pressure methods in the prior art have certain Disadvantages: 1) Hammering construction method: noisy and easy to disturb the people; it needs a certain counterweight and a certain lifting height. Under special height limit conditions, it is difficult to obtain a large potential energy, and the construction speed is slow. There is also the fact that the length of the single-segment pile is small and there are many pile connection points; hammering construction is likely to cause warping and deformation of th...

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Problems solved by technology

[0002] Small-diameter steel pipe piles are widely used in the foundation and foundation reinforcement of small buildings and structures. Steel pipe piles can be divided into two types: hammering and static pressure according to the construction method. The hammering and static pressure methods in the prior art have certain Disadvantages: 1) Hammering construction method: noisy and easy to disturb the people; it needs a certain counterweight and a certain lifting height. Under special height limit conditions, it is difficult to obtain a large potential energy, and the construction speed is slow. There is also the fact that the length of the single-segment pile is small and there are many pile connection points; hammering construction is likely to cause warping and deformation of the pipe wall at the end, causing certain difficulties to the pile connection, and the pile connection needs to be re-cut; 2) Static pressure construction method : This method has certain advantages in noise-free construction site, but in general, the static pressure point is at the pile head position, and the single-section pile length is small in the case of height limit, and there are many pile connection points, most of them will use excavated foundation The pit allows the position of the pile to move down, but this will cause inconvenience in the welding construction; if the pipe wall is thin, the end will also produce warping deformation of the pipe wall, which will cause certain difficulties for the pile connection, and the pile needs to be re-cut.

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