Energy dissipation and seismic mitigation joint of assembly type RPC/concrete group frame

Abstract

The invention discloses an energy dissipation and seismic mitigation joint of an assembly type RPC / concrete group frame. A reinforced concrete column is used as the column. The column can be precastedor casted-in-place. A prefabricated beam with a keyway is used as the beam and the upper portion of the beam is provided with a laminated layer of a certain thickness. A PC steel bar is used as the beam bottom carrying bar and the bar extends a certain length at the end of the beam. The prefabricated beam is of a partial prestressing force structure. In a prefabricated beam keyway and joint area,reactive powder concrete (RPC) with high strength and toughness is used to conduct pouring. The laminated layer on the upper portion of the beam uses normal concrete to conduct pouring. After pouringof pouring areas behind the joint are all finished, a friction damper is arranged on the beam and column junction of the beam bottom. According to the energy dissipation and seismic mitigation joint,high strength materials such as RPC or PC steel bars are taken full advantage of, the section sizes of prefabricated assembly members can be reduced, the self weight of the prefabricated members arereduced, and meanwhile, combining with the energy dissipation and seismic mitigation technology, the problem that high-strength bars consume less energy can be fully solved. The energy dissipation andseismic mitigation joint has obvious technical advantages and has large-scale promotion and application prospects.

Description

technical field [0001] The invention relates to an energy-dissipating and shock-absorbing node of an assembled RPC / concrete composite frame, which belongs to the technical field of concrete frame structures in construction engineering. Background technique [0002] Under the active advocacy of the country to vigorously develop prefabricated buildings, prefabricated concrete structures have received widespread attention, and prefabricated concrete frame structures are one of the important structural forms. Existing prefabricated concrete frame structures generally use ordinary concrete and ordinary steel bars. There are generally key technical problems such as crowded joint steel bars, difficulties in installation and construction, and difficulty in ensuring joint quality. Moreover, ordinary concrete has relatively weak tensile strength, and the joint area is vulnerable to earthquakes. Under the action of load, more serious damage is prone to occur. The above problems limit ...

AI Technical Summary

Problems solved by technology

Existing prefabricated concrete frame structures generally use ordinary concrete and ordinary steel bars. There are generally key technical problems such as crowded joint steel bars, difficult installation and construction, and difficult to ensure joint quality. Moreover, ordinary concrete has relatively weak tensile capacity, and the joint area is vulnerable to earthquakes. Under load, it is prone to more serious damage

The above problems limit the application and development of prefabricated concrete frame structures.

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