Construction method for concrete beam with U-shaped steel bar connecting joints

Abstract

The invention relates to a construction method for concrete beam with U-shaped steel bar connecting nodes. In the method, two ends of a precast frame beam are respectively provided with a groove; reserved steel bars on the end parts of the precast frame beam are only in the grooves; a temporary support frame is erected; U-shaped steel bars are put into the grooves of the precast frame beam; the back cut of each U-shaped steel bar is provided with a steel bar which is clamped in the groove; and beam-column joint steel bars are bound and concrete is cast into the grooves, so the U-shaped steel bars make the beams and columns connected into a whole. The construction method solves the problems that connected beams are easily corroded, the pretightening and loosening are needed on large stress occasions, the cost of monitoring and maintenance at later stage is high, equipment has large volume and is difficult to move, the construction cannot be carried out in a narrow space or without a crane, the qualification rate of joints is low, the power consumption is high and the like in a bolt connecting method and a welding connecting method. The construction method has the advantages of excellent earthquake resistance, construction period conservation by 50 percent, quality guarantee, low cost and revolving material conservation.

Description

technical field [0001] The invention relates to a new construction method for a main body of a concrete structure, in particular to a construction method for a concrete beam with U-shaped reinforcement connecting nodes. Background technique [0002] Before the present invention, in building construction, what general concrete prefabricated frame structure beam-column connection adopts is nothing more than two kinds of methods, and a kind of is bolt connection method, and another kind is welding connection method. These two connection methods have obvious disadvantages: corrosion is prone to occur in the gaps of bolted connections, resulting in connection failures, and pre-tightening and anti-loosening are required in places with large forces, and the later monitoring and maintenance costs are relatively large; The equipment connected by welding is bulky, inconvenient to move, construction is impossible in narrow space or without a crane, the qualified rate of joints is low, ...

AI Technical Summary

Problems solved by technology

These two connection methods have obvious disadvantages: corrosion is prone to occur in the gaps of bolted connections, resulting in connection failures, and pre-tightening and anti-loosening are required in places with large forces, and the later monitoring and maintenance costs are relatively large; The equipment connected by welding is bulky, inconvenient to move, construction is impossible in narrow space or without a crane, the qualified rate of joints is low, the power consumption is large, and the technical requirements for operators are high, and the welding quality in operation is greatly affected by the technical level of workers Big

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