Prefabricated steel tube restrained energy dissipation connection node and construction method

Abstract

The invention provides a prefabricated assembling type steel pipe restrained energy-dissipation connection node. The steel pipe restrained energy-dissipation connection node comprises a core region pre-buried steel assembly, four porous outer steel plates matched with the core region pre-buried steel assembly, and a plurality of beam end edge web plates, wherein the four porous outer steel plates are arranged around the outer side of the core region pre-buried steel assembly to form an outer steel pipe; steel fiber self-compacting concrete is poured in the outer steel pipe to form a steel fiber self-compacting concrete core region; the beam end edge web plates are arranged between upper and lower flanges of the core region pre-buried steel assembly; and the upper and lower flanges are connected with a prefabricated beam through a cast-in-situ steel fiber self-compacting concrete connection section. The prefabricated assembling type steel pipe restrained energy-dissipation connection node has the advantages that the strength and ductility of concrete of the core region of the node can be improved, and an anti-seismic design concept of a strong node and a weak member is realized; and the energy-dissipation capability of a beam end plastic hinge can be expressed very well, the rigidity degeneration of the plastic hinge is delayed, the shearing-resisting capability of a beam end is improved, and the beam end plastic hinge can move outwards.

Description

technical field [0001] The invention relates to an assembled reinforced concrete frame connecting node, in particular to a prefabricated assembled steel pipe constrained energy-consuming connecting node and a construction method. Background technique [0002] During the "13th Five-Year Plan" period, my country will focus on the development of green buildings and intelligent buildings, focus on the modernization of the construction industry, vigorously adjust the structure of the construction industry, comprehensively use various policies and measures, accelerate the modernization of the construction industry, and promote the transformation of the construction industry upgrade. The prefabricated reinforced concrete structure is conducive to improving production efficiency, saving energy, developing green and environmentally friendly buildings, and is conducive to improving and ensuring the quality of construction projects, and has broad application prospects. [0003] Structu...

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Problems solved by technology

However, the existing prefabricated reinforced concrete frame structure has the following defects: 1. The steel bars in the core area of ​​the beam-column joints in the prefabricated prefabricated components are dense, and the concrete pouring is difficult, the compactness of the concrete is difficult to ensure, and the stirrups are also difficult to bind in place; 2. 1. The seismic performance of the connection nodes of prefabricated prefabricated components is poor, and the ductility of the core area of ​​the joints is not enough; 3. The energy dissipation capacity of the plastic hinge at the beam end of the prefabricated frame structure is poor

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