Novel high-strength piecing device for tubular piles

Abstract

The invention discloses a novel high-strength piecing device for tubular piles. The piecing device comprises an upper connecting body and a lower connecting body; the interior of the upper connectingbody is provided with a locking piece, and a center hole and a through hole are formed in the locking piece; the center hole and the through hole are mutually perpendicular, and the center hole penetrates through the through hole; the interior of the through hole is provided with a fixture block, and the fixture block is provided with a circular bead; the interior of the center hole is provided with a guide rod; a first groove is formed in the upper end of the lower connecting body, and a fixture slot is formed in the side wall face of the first groove; and the upper connecting body is fixedlyconnected with the lower connecting body through the locking piece. The piecing device disclosed by the invention is simple in structure and tight and stable to connect, is capable of realizing welding-free connection between tubular pipe bodies, and has a good connecting effect.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a novel high-strength pipe pile joint device. Background technique [0002] Pipe piles are widely used in the field of construction. There are many pile driving methods for pipe pile sinking construction, such as: hammering method, static pressure method, vibration method, water jet method, pre-drilling method and middle digging method. Which kind of pile sinking method, most of the construction process will inevitably encounter pile connection problems. [0003] At present, during the construction of pipe piles, most of the pipe piles that need to be spliced ​​are welded piles. Practice shows that welding piles have the following problems: [0004] (1) Welding is a technical job with high technical requirements for construction personnel. Correspondingly, welding equipment needs to be prepared. [0005] (2) Welding itself may also have some welding defects. W...

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Problems solved by technology

[0005] (2) Welding itself may also have some welding defects. Welding defects refer to the phenomenon that the metal is discontinuous, not dense or poorly connected in the welding joint during the welding process

[0007] (3) Welding workers do not have a strong sense of responsibility, or the construction party often violates the following operating specifications in order to rush the time: the number of welding does not meet the standard; the welding sequence does not meet the standard; the cooling time after welding does not meet the standard; Wait for the cooling time to be no less than 5 minutes, but in the general operation process, start piling immediately after welding; after the welding position touches the ground, it will affect the strength of the welding point due to excessive heat and cold, which will seriously cause welding failure

[0008] (4) The problem of unstable pile connection

[0009] (5) Environmental and safety issues

Dangers such as fire, explosion, electric shock, scalding and acute poisoning may occur at any time during the welding process, as well as the influence of harmful factors such as arc light, welding fume, toxic gas, high-frequency electromagnetic radiation, rays, noise and thermal radiation, and industrial accidents are prone to occur and occupational hazards, and cause environmental pollution

[0010] (6) The problem of construction time, from welding and cooling to the start of piling, it takes about 15 to 20 minutes

[0011] (7) Cost problem, labor cost and material cost are relatively high, increasing construction cost input

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