Pile construction method and special equipment

Abstract

The invention discloses a pile construction method and special equipment, the pile construction method comprises the steps of equipment immersed tube system positioning, tube sinking, feeding, bottomexpanding, pouring and tube drawing, an inner tube of the immersed tube system is sleeved in an outer tube, and the upper parts of the inner tube and the outer tube are fixed by a steel shaft connecting device. Holes are formed in the two symmetrical sides of the inner pipe of the outer pipe at the same time, and a steel shaft with the length larger than the diameter of the outer pipe penetrates through the holes to be fixed. Or large slotted holes are simultaneously formed in two symmetrical sides of the outer pipe, small slotted holes are simultaneously formed in two symmetrical sides of theinner pipe, and a steel shaft with the length larger than the diameter of the outer pipe relatively moves or is fixed along the large slotted holes in two sides of the outer pipe. The construction quality is good, and construction is convenient.

Description

technical field [0001] The invention relates to a pile construction method and special equipment. Background technique [0002] Existing pressure-holding type inner and outer tube immersed pipe bottom-expanding piles (outer and inner double-casing immersed pipes, two upper and lower sets of pile clamping boxes, the lower clamping box clamps the outer box, and the upper clamping box not only clamps the outer pipe but also clamps the outer casing. The inner tube is used to press the inner tube to form the expanded bottom; or a single set of lower clamping box is set up with a clamp bracket with a net height of 2 meters on the upper part, and the top pressure beam system set on the bracket is used to counter pressure the inner tube to form the expanded bottom), among which The inner tube is sleeved inside the outer tube, and the upper part of the inner and outer tubes is fixed with a connecting device. The length of the inner tube sleeved into the outer tube is less than the le...

AI Technical Summary

Problems solved by technology

[0002] Existing pressure-hugging inner and outer tube sinking tube bottom expansion piles (outer hugging and inner and outer double casing sinking tubes, two sets of clamping boxes on the upper and lower sides, the lower clamping box clamps the outer box, and the upper clamping box clamps both the outer tube and the Inner pipe, use the inner pipe to pressurize to form the bottom expansion; or a single set of lower clamp box, set a clamping bracket with a clear height of 2 meters on the upper part, and use the top pressure beam system set on the bracket to back-press the inner tube to form the bottom expansion), of which The inner tube is set inside the outer tube, and the upper part of the inner and outer tubes is fixed by a coupling device. The length of the inner tube inserted into the outer tube is shorter than the length of the outer tube. It is only used as a force transmission rod for static pressure expansion. There are still deficiencies in technology, bottom expansion technology and process, and quality control, and further improvement is needed

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