Assembly integral type concrete frame structure of dry-wet mixed connection of nodes and construction method

Abstract

The invention discloses an assembly integral type concrete frame structure of dry-wet mixed connection of nodes and a construction method. The assembly integral type concrete frame structure comprises pre-fabricated concrete pillars, pre-fabricated concrete beams, node local pre-stressed tendons, pre-fabricated concrete plates and rear-poured concrete combined interface layers; in an installation construction stage of a structural system, pre-fabricated components of the beams and the pillars adopt local pre-stress exerting and are connected in a dry mode, step-shaped rabbets at the ends of the pre-fabricated concrete beams are stored on side brackets of the pre-fabricated concrete pillars, and the pre-stressed tendons are inserted into vertical cross arc-shaped porous channels reserved in the beam ends and the node pillar sections of the pre-fabricated concrete pillars and are stretched; after dry-type connection between the pre-fabricated concrete beams and the pre-fabricated concrete pillars is completed, and the structural bearing capacity is achieved; in a using stage, after the pre-fabricated concrete plates or steel bearing plates, the pre-fabricated beams and steel rebars on the upper portions of the pre-fabricated plates are installed, the concrete combined interface layers are poured, and wet-type connection among the pre-fabricated concrete pillars, the pre-fabricated concrete beams and the pre-fabricated concrete plates is completed; and through dry-and-wet-type mixed connection of the nodes, the assembly integral type concrete frame structure is formed.

Description

technical field [0001] The invention relates to the field of building engineering assembly, in particular to an assembled integral concrete frame structure. Background technique [0002] Assembling concrete frame structures can greatly improve construction capacity and construction speed, save a lot of labor, ensure construction quality, and help meet the requirements of "four festivals and one environmental protection", and vigorously promote prefabricated concrete buildings in the country to promote green buildings and green The background of construction has very good development prospects. [0003] At present, the known domestic and foreign prefabricated assembly frame structures mainly include conventional prefabricated beam-column joint wet connection assembly frame structure and joint dry connection prestressed assembly frame structure. The height of the prefabricated columns of the wet-type connection frame is located below the beam-column joints, and the prefabrica...

AI Technical Summary

Problems solved by technology

The two structures both use the whole beam with column joints to apply prestress. The safety of the structure is too dependent on the prestressed tendons, and the plastic hinge transfer of the beam at a certain distance from the side of the column cannot be realized.

In addition, the prestressed tendons of the preloaded prefabricated concrete structure require complex construction techniques such as beam penetration and tension in the reserved channel of the entire prefabricated beam, and the energy consumption of the structure is relatively weak; it is difficult for PRESSSS to give full play to the structural bearing capacity of its prestressed tendons contribution, and its design theory does not match the current design method of my country's norms

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