Method for pore forming by embedding assistant bonded rebar in reinforced concrete structure

Abstract

The invention discloses a method for pore forming by embedding assistant bonded rebar in a reinforced concrete structure, comprising the following steps: (1) when pouring original concrete, embedding an embedded part of which the hardness is smaller than that of the original concrete on a preset bonded rebar position: the embedded part avoids the original reinforcing steel bar in the original concrete to form space with the original reinforcing steel bar, the axial dimension and the radial dimension of the embedded part are both smaller than those of a drill pore of the bonded rebar, and the embedded part extends to the surface of the original concrete towards one end that needs to be drilled; (2) drilling and forming pores by a drill from the end of the embedded part along the direction of the embedded part: in the pore forming process, correctness of the drilling direction is judged by examing crushed aggregates of the embedded part mixed in the drilled concrete, and the embedded part in the substrate is judged to be fully cleaned when the drilled concrete does not have the crushed aggregates of the embedded part; and (3) finally continuing drilling to the preset depth to finishpore forming. The method effectively avoids damage to the original reinforcing steel bar in pore forming of the bonded rebar and ensures structure safety.

Description

technical field [0001] The invention relates to a method for planting bars to form holes in reinforced concrete structures. Background technique [0002] In the case where the location, direction, depth, and quantity of bars to be planted in the future have been determined before pouring the matrix concrete, such as in a super high-rise building with a core tube, the reinforced concrete core tube is generally constructed first, and horizontal components such as beams and slabs are followed up. The beam and slab reinforcement is connected to the core tube concrete by planting bars. At this time, the diameter, position and quantity of the beam and slab reinforcement have been determined before the construction of the core tube concrete. At present, the planting bar still adopts the trial drilling method, that is, once the matrix steel bar is drilled during the drilling process, the drill bit needs to be withdrawn, and then drilled again in a nearby position until the matrix st...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for pre-embedded auxiliary planting bars to form holes in reinforced concrete structures, which can effectively solve the problem that the drill bit is difficult to drill in the existing trial drilling method, and the drill bit is easy to touch the matrix steel bar and cause damage to the matrix steel bar, resulting in safety Hidden problems

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