Mass concrete structure deep pore reinforced construction method

Abstract

The present invention discloses a construction method for planting reinforcement bars in deep holes by a massive concrete structure, and relates to a construction method for the reinforcement and compensation project of the massive concrete structure. The utility model has the embodiment that: firstly, the plane position for embedding the reinforcing steel bars is determined in accordance with thedesign requirement, holes are drilled by a drilling machine, the hole wall is smoothed and the holes are cleaned, and the two pre-embedded reinforcing steel bars, an infusion tube and a centering supporting frame are bond, an outer ring positioning ring is suited outside, the bond reinforcing steel bars are arranged inside the drilling holes, and the reinforcing steel bars and the centering supporting frame are contacted with a bottom hole, the grouting material is perfused into the drilling holes through the infusion tube by using an injection pump; in the injection process, the infusion tube is extracted out upward gradually, the infusion is operated continuously until the hole is fully filled, the reinforcing steel bars can be disturbed within 24 hours, and the bar planting is completed after 48 hours. The present invention can improve the strength of the massive concrete structure without changing the former section size of the concrete structure, and the additionally arranged reinforcing steel bars are firmly connected with the former structure. The invention method is simple, and has strong practicability and lower construction cost; the continuous pressure perfusion is adopted to ensure that the grouting material is compact without holes.

Description

technical field [0001] The invention relates to a large-volume concrete structure reinforcement engineering construction method. Background technique [0002] Many large-volume concrete structures, such as sluice piers of dams, side piers of bridges, etc., need to be reinforced due to the increase of service life or the change of function. The general reinforcement is to increase the cross-sectional area to enhance the strength, but For many projects, it is often necessary to greatly increase the strength of the structure without changing the cross-sectional size of the original structure. For example, when heightening a dam that has been completed and put into use, in order not to affect the original water-passing area, the method of increasing the cross-sectional area of ​​the pier of the spillway cannot be used to increase the overall strength of the pier, because in this way It will narrow the original water cross section. Therefore, it is necessary to adopt another me...

AI Technical Summary

Problems solved by technology

For example, when heightening a dam that has been completed and put into use, in order not to affect the original water-passing area, the method of increasing the cross-sectional area of ​​the pier of the spillway cannot be used to increase the overall strength of the pier, because in this way It will narrow the original cross-section of the water

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