Construction method of phc pipe piles under narrow site conditions

Abstract

The invention discloses a construction method for a PHC tubular pile under the narrow site condition. The method comprises the steps that firstly, PHC tubular pile position determining and crane in-place are performed at first; a pile hammer is arranged on a crane main hook and is adjusted through cooperation of the angle of a derrick mast and the position of the crane, and it is ensured that thepile hammer can be accurately punched according to the determined pile position; the tubular pile is lifted to the position of the pile hammer through the crane, a perpendicular shallow pit is dug atthe position of the tubular pile, the lower end of the tubular pile is sunk through the crane and matched with the upper end of the tubular pile to straighten the pile body; the perpendicularity of the pile body is calibrated through two theodolites; the pile hammer is started for starting pile sinking construction, when the pile head of the pile segment to be sunk is 0.5 m above the ground, pilesplicing operation is performed; pile sinking construction continues to be performed through the pile hammer, when the pile block sinks to the position near the ground and pile delivery is needed, a pile delivery device is adopted for delivering piles to the elevation, a level gauge is adopted for controlling deviation of elevation of the pile block. The method is easy and convenient to construct,high in speed, high in pile forming quality, and capable of avoiding the requirement for a construction site of conventional pile machine piling, reducing damage to public facilities and afforestingand lowering the engineering cost.

Description

technical field [0001] The invention relates to a construction method of PHC pipe piles under narrow site conditions. Background technique [0002] PHC pipe piles, that is, prestressed high-strength concrete pipe piles, have a high bearing capacity of single piles, a wide range of applications, and factory-based, specialized, and standardized production. High, easy to operate, easy to control, and easy to guarantee the bearing capacity, bending resistance and anti-scratch performance, so it has been widely used in recent years. With the advancement of national urban construction and the implementation of infrastructure construction, when implementing PHC pipe pile construction on some special construction sites, such as parallel pipe gaps and outside green belts, the cost of removing and leveling the site is high, which requires The invention relates to a method for constructing PHC pipe piles across obstacles under narrow site conditions, and the construction of pipe piles...

AI Technical Summary

Problems solved by technology

Especially in the construction of municipal pipelines, the cost of foundation treatment is high, the construction involves a wide range of areas, and coordination is difficult, which has a great impact on project cost, quality, safety, and progress.