Steel bar connecting method for precast concrete cross beam and precast concrete vertical component

Abstract

The invention discloses a steel bar connecting method for a precast concrete cross beam and a precast concrete vertical component. The steel bar connecting method comprises the steps: 1, right-hand thread sleeves are pre-buried in the connecting face of the precast concrete vertical component; 2, left-hand thread sleeves are pre-buried in the connecting face of the precast concrete cross beam, andinternal and external bolts are screwed in the left-hand thread sleeves; 3, positioning threaded sleeves are pre-buried in the connecting face of the precast concrete cross beam, and auxiliary positioning bolts are screwed in the positioning threaded sleeves correspondingly; 4, after the precast concrete vertical component and the precast concrete cross beam are precast, the precast concrete vertical component is hoisted to the design position firstly, and then the precast concrete cross beam is hoisted to a temporary support at the design position; 5, studs are screwed into the correspondingright-hand thread sleeves; 6, the internal and external bolts are screwed to tension the studs; and 7, a formwork is erected to be poured with concrete, and a cast-in-site segment is formed. The steel bar connecting method has the advantages that the amount of the cast-in-situ concrete in a construction site is decreased, and the construction period is shortened.

Description

technical field [0001] The invention relates to the field of prefabricated concrete construction, in particular to a steel bar connection method between a prefabricated concrete beam and a prefabricated concrete vertical member. Background technique [0002] In prefabricated concrete structures, the connection method of steel bars at the connection nodes between concrete beams and concrete vertical members (such as concrete columns or shear walls) is the premise to ensure that the strength of the cast-in-place section meets the design load requirements. At present, the method of connecting concrete beams and concrete vertical members often adopts the sleeve grouting technology, that is, the sleeves are used to connect the steel bars of the two concrete members into one, grouting into the sleeve, and finally the concrete column or The shear wall completes the connection between the concrete beam and the concrete vertical member. Although the above-mentioned construction tech...

AI Technical Summary

Problems solved by technology

Although the above-mentioned construction technology has a clear force, it requires cast-in-place concrete columns or shear walls. The amount of cast-in-place concrete is large, which affects the construction progress and the construction period is long. At the same time, the steel bar connection method using sleeve grouting is highly concealed and it is not easy to control the connection. The quality at the node has potential safety hazards

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