Method for breaking concrete pile head

Abstract

The invention discloses a method for breaking a concrete pile head. The method comprises the following steps: (1) labeling the preset pile top elevation line (1) of a valid pile head (5) on the outerside wall of the pile head, and thus distinguishing an invalid pile head (2) needing to be broken; (2) drilling from the outer side wall of the invalid pile head (2) to the axis line direction of thepile head, and thus forming at least one single-opening hole passage (3) in the invalid pile head (2); (3) expanding excavation from the inner chamber of the hole passage (3), and thus forming at least one chamber (4) in the hole passage (3); (4) pouring a static expanding agent used for breaking the invalid pile head (2) in the chamber (4) from the opening of the chamber (4); and (5) inserting asealing column (6) fitting the structure of the inner chamber of the hole passage (3) into the hole passage (3), and thus sealing the static expanding agent in the chamber (4). The breaking method cansave cost, has a significant pile head breaking effect, and can be widely applied to pile head breaking of large-diameter pile foundations.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a method for removing concrete pouring pile heads. Background technique [0002] With the continuous development of infrastructure projects such as highways and railways in our country, there are more and more bridge projects, and pile foundations are widely used in bridge projects. The pile foundation includes the pile head part. In order to ensure the quality of the pile foundation, the pile During the foundation pouring process, the pile top of the pile head should be higher than the preset pile top elevation (the preset pile top elevation is the pile height of the effective pile head) by a certain distance (for example, 0.5m~1.0m) to ensure the strength of the pile head. In order to carry out subsequent process construction after pouring is completed, the pile head part (ie, invalid pile head) higher than the preset pile top elevation must be removed. However, ...

AI Technical Summary

Problems solved by technology

However, the pile foundations of most bridges have the characteristics of large diameter and many superfills. Therefore, the removal of pile heads of such large-diameter pile foundations has always been a difficult problem. Generally, manual chisel removal or manual-assisted small-scale mechanical removal methods are used for these large-diameter pile foundations. The method is complicated in technology, slow in construction speed, consumes a lot of manpower and material resources, and will cause damage to the pile foundation to a certain extent

Images