Novel prefabricated structure precast column unit and beam-column joint construction method

Abstract

The invention discloses a novel prefabricated structure precast column unit which comprises an embedded nut arranged in a precast column. The distance between the embedded nut and the top of the precast column is 120mm, the spacing of two sides of a center line of a beam is D/4 (D refers to the width of a supporting bracket), the supporting bracket mainly comprises angle steel, a positioning steelplate, a reinforcing steel plate, a high-strength bolt and a nut, during industrial production, circular holes are formed in the side face of the angle steel, the depth of each circular hole is 5mm,the diameter of each circular hole is 100mm, the positioning steel plate is arranged at the top of the angle steel, the reinforcing steel plate is arranged on the side face of the angle steel, and a composite beam is fixed. The novel prefabricated structure precast column unit has the advantages that erection of a vertical support at the end of the junction of the precast column and the compositebeam is omitted, on-site construction is simple and convenient, a site is less in loading, the precast column, the composite beam and the supporting bracket can be produced in a standardized manner ina factory, economic feasibility is strong, the supporting bracket can be recycled, a green building conforms to national advocacy, the supporting bracket is arranged at the junction of the precast column and the composite beam, mortar leakage in casting can be avoided, and construction quality is ensured.

Description

technical field [0001] The invention relates to a building component, in particular to a construction method for a new prefabricated column component and a beam-column joint of a prefabricated structure. Background technique [0002] According to the requirements of the current prefabricated monolithic building code, in order to ensure the progress of the project and ensure the quality of the project, the connection method of the prefabricated structural components and nodes in the prefabricated monolithic building is very important. Among the joint connections of prefabricated frame structures, the connection between prefabricated columns and composite beams is the most complex, with the highest technical content and the most difficult construction. In the existing construction methods of precast columns and composite beams, in order to realize the joint connection between precast columns and composite beams and ensure the positioning and stability of composite beams, suppo...

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: 1. The composite beam support frame is used more

Due to the current construction of prefabricated columns and composite beam joints, vertical supports are usually erected at the end of the junction of prefabricated columns and composite beams, and the on-site construction is complicated, which cannot be called a true prefabricated building. The prefabricated frame structure should be To reduce the number of internal supports, the construction is convenient and the construction quality is guaranteed

At the same time, more supports at the end of the junction of prefabricated columns and composite beams will cause waste of materials, time-consuming and labor-intensive, and affect the overall project progress; 2. Low industrial production efficiency

At present, the country advocates industrialization and standardization. Considering the shortage of labor force in the future, we should try our best to ensure that the prefabricated components are industrialized in the factory to release the labor force; 3. The overlapping length of the composite beam and the prefabricated column should not be less than 10mm to ensure no grout leakage. In order to ensure the progress of the project, the lap length does not meet the requirements, the cast-in-situ concrete at the junction of the prefabricated column and the composite beam is seriously leaking, and the hoisting of the prefabricated building to the composite beam and the lapping precision of the prefabricated column and the composite beam are relatively high , it is not easy to guarantee

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