Construction method for hammering and sinking precast pile in deep foundation pit in offshore super-thick sludge area

Abstract

The invention discloses a construction method for hammering and sinking a precast pile in a deep foundation pit in an offshore super-thick sludge area, belongs to the technical field of building construction, and aims to solve the technical problem of how to ensure the safety of the foundation pit in the construction process of the precast pile. And meanwhile, the influence of hammering construction vibration and stress extrusion of a precast pile in the deep foundation pit on a deep foundation pit supporting pile is reduced. According to the technical scheme, the method specifically comprises the following steps that S1, an inclinometer and foundation pit automatic detection equipment are installed; s2, constructing stress release holes and stress release ditches; s3, performing hammering construction on the precast pile; s4, monitoring, feeding back, dynamically adjusting the construction sequence, and completing stress release through a stress release ditch and a stress release hole; s5, calculating and selecting a proper construction machine tool according to a detection data theory; and S6, groove cleaning and local pit common-pit excavation are carried out.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a hammer-sinking construction method for prefabricated piles in deep foundation pits in offshore ultra-thick silt areas. Background technique [0002] Prefabricated piles have become the first choice for more and more pile foundations due to their advantages of fast construction speed, simple on-site management, good quality control and low engineering cost. At present, the method of starting construction from the ground is mostly used, that is, before the excavation of the foundation pit, piles are driven from the ground, and the piles are sunk into the design depth by using the pile delivery technology. If it is too large, it is very easy to cause problems such as dumping and damage of prefabricated piles, especially during the excavation of the foundation pit. The excavation range of the deep foundation pit in the super-thick silt area in the offshore area is fu...

AI Technical Summary

Problems solved by technology

[0004] The technical task of the present invention is to provide a hammer sinking construction method for prefabricated piles in deep foundation pits in offshore ultra-thick silt areas, to solve how to ensure the safety of foundation pits during the construction of prefabricated piles, and at the same time reduce the hammering of prefabricated piles in deep foundation pits Influence of Construction Vibration and Stress Squeeze on Supporting Pile of Deep Foundation Pit

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