Retard-bonded prestressed prefabricated integral frame joint system

Abstract

The invention discloses a retard-bonded prestressed prefabricated integral frame joint system. The system comprises a precast concrete column, a left precast concrete beam and a right precast concretebeam; wherein, a joint part of the precast concrete column merely consists of a main reinforcement, retard-bonded prestressed tendons are respectively laid in the left precast concrete beam and the right precast concrete beam, the right end of the retard-bonded prestressed tendons in the left precast concrete beam forms a connection part, and the left end thereof is connected with an anchorage ata tensioning end; the left end of the retard-bonded prestressed tendons in the right precast concrete beam forms a connection part, and the right end thereof is connected with the anchorage at the tensioning end; the connection part of the retard-bonded prestressed tendons in the left precast concrete beam is connected with the connection part of the retard-bonded prestressed tendons in the rightprecast concrete beam by a connector, and the precast concrete column, the left precast concrete beam and the right precast concrete beam are connected into an integral part at the joint part by castfine aggregate concrete. The system is characterized by good seismic performance, high fabrication degree and easy construction operation.

Description

technical field [0001] The invention relates to a mixed-assembled integral concrete frame joint system, in particular to a slowly bonded prestressed assembled integral frame joint system. Background technique [0002] Currently, the prefabricated prestressed concrete multi-layer frame system assembled by prefabricated concrete beams and prefabricated concrete columns is generally manufactured in the factory. Sub-tensioned prestressed tendon channels. After the precast concrete beams and precast concrete columns are in place, the post-tensioned prestressed tendons are passed through the reserved channels of the precast concrete beams and precast concrete columns, and the joints are subjected to secondary prestressed tension and precompression, in which the post-tensioned prestressed tendons are without Bonded prestressed tendons. Post-tensioned prestressed tendons can not only be used as an assembly method in the construction stage, but also can bear the bending moment of t...

AI Technical Summary

Problems solved by technology

However, since this prestressed frame form uses unbonded prestressed tendons, the seismic performance of the structure is poor and cannot meet the requirements of GB 50010-200211.8.2 of the "Code for Design of Concrete Structures" The process of piercing post-tensioned prestressed tendons in the reserved channels of precast concrete columns is cumbersome and inconvenient for construction

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