Bridge pile foundation construction method

Abstract

The invention discloses a construction method of a bridge pile foundation. The method comprises the following steps: 1, hoisting a concrete protecting tube to a pile position to ensure that the concrete protecting tube is perpendicular, slowly and perpendicularly sinking the concrete protecting tube into mud to stabilize, and ensuring that the upper end of the concrete protecting tube is positioned below the water level; 2, applying vibration of the concrete protective tube by utilizing a vibrating hammer to ensure that the concrete protective tube is sunken into the designed depth; 3, repeatedly impacting, pulping and drilling the internal parts of the concrete protective tube by adopting a drilling machine, clearing holes in time after hole is drilled eventually to form a hole path, and carrying out compaction of the inner wall of the hole path; 4, descending a prefabricated reinforcement cage firstly, and then descending a bored concrete guide pipe to the bottom close to the hole path, and starting to pour concrete after secondary hole clearing to complete construction. The method has the beneficial effects that the construction method of the bridge pile foundation can avoid the phenomenon that the hole path is collapsed due to the pressure of water, so that additional strengthening support of the hole path is not needed; moreover, the construction method has the advantages of energy conservation and environment protection.

Description

technical field [0001] The invention relates to a bridge construction method, in particular to a bridge pile foundation construction method. Background technique [0002] With the rapid development of the economy, the demand for transportation is increasing rapidly, and there are more and more large bridges across the sea and across the river. Bored piles with high bearing capacity and stable quality are the preferred foundation form for most bridge projects. The construction of bored pile foundation is the basic link of the whole bridge construction process, and it is also an extremely important link. [0003] The Chinese patent whose publication number is CN105386408A discloses a construction method for deep-water bridge pile foundations. In this construction method, after the steel casing reaches the designed depth, the bottom-sealing concrete of the steel casing is poured to seal the gap between the bottom of the steel casing and the bedrock. Afterwards, grouting and ...

AI Technical Summary

Problems solved by technology

Especially in deep water areas, the side walls of the channel are under greater pressure, and the channel is more prone to collapse, which needs to be improved

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