Holding type major diameter static pressure sinking pipe cast-in-place pile construction method and pile-pressing machine thereof

Abstract

The invention provides a holding type major diameter static pressure sinking pipe cast-in-place pile construction method, which comprises the steps of: A, measuring and positioning; B, moving the pile-pressing machine in situ; C, moving the pile shoe in situ; D, lifting the steel sleeved pile pipe; E, checking the centering of the steel sleeved pile pipe; F, pressing the pipe; G, jointing the pipe; H, pressing the pipe again; I, stopping pressing the pipe; J, placing a steel bar cage; K, placing concrete; L, drawing the pipe out. The invention further provides a pile-pressing machine, which has a body composed of a walking mechanism, a crane, a counterweight structure and a frame. The pile-pressing machine is characterized in that: a pile-pressing bench is disposed on the frame; the pile-pressing bench comprises a pile-pressing upright column, a main pile-pressing cylinder, an accessory pile-pressing cylinder, a hydraulic gyrator, and a pile clamping box; pile clamping cylinders are transversely disposed on the pile clamping box; and a driving sleeve is disposed on the vertical through hole of the hydraulic gyrator. The invention utilizes the advantages of low noise and high frequency vibration of static pile-pressing construction process, and fully plays the advantages of high bearing capacity and stable construction quality of major diameter sinking pipe cast-in-place pile.

Description

Technical field: [0001] The invention relates to a pile forming method of building foundation pile foundation. Background technique: [0002] The large-diameter hammer-sinking-tube cast-in-situ pile has been widely used because of its high single pile bearing capacity and reliable pile quality. However, there are disadvantages such as high noise, high pile frame, easy lodging, and high-altitude operations affecting safety. [0003] Prestressed high-strength concrete pipe piles (PHC pipe piles) have also been widely used due to their high single pile bearing capacity and fast construction speed, and have developed from the initial hammering piles to low-noise static pressure piles. However, due to the limitation of the strength of the pile body, static pressure PHC pipe piles are also easy to be crushed at the clamping pile, easy to break when encountering relatively hard layers in the foundation soil, bursting piles, and pile joints in corrosive soils (such as areas affecte...

AI Technical Summary

Problems solved by technology

However, due to the limitation of the strength of the pile body, static pressure PHC pipe piles are also easy to be crushed at the clamping pile, easy to break when encountering relat...

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