Steel reinforced concrete column-steel beam joint locally adopting fiber reinforced concrete

Abstract

The invention discloses a steel reinforced concrete column-steel beam joint locally adopting fiber reinforced concrete. The steel reinforced concrete column-steel beam joint comprises core profile steel, the fiber reinforced concrete, a first steel beam, a second steel beam, a third steel beam and a fourth steel beam; the core profile steel comprises a first profile steel web and a second profilesteel web which are welded to form cross-shaped profile steel, the two ends of the first profile steel web are correspondingly provided with a first profile steel flange and a second profile steel flange, and the two ends of the second profile steel web are correspondingly provided with a third profile steel flange and a fourth profile steel flange; and the first profile steel flange, the second profile steel flange, the third profile steel flange and the fourth profile steel flange are correspondingly connected with the first steel beam, the second steel beam, the third steel beam and the fourth steel beam. The steel reinforced concrete column-steel beam joint locally adopting the fiber reinforced concrete has the characteristics that the fiber reinforced concrete is adopted at a joint core zone, the using amount of stirrups in the core zone can be reduced or even eliminated, the shear resistance capacity of the joint, the rotating capability of the joint and the energy dissipation capability can be remarkably improved, and meanwhile, construction complexity is reduced.

Description

technical field [0001] The invention belongs to the field of civil engineering structure design, and relates to a steel concrete column-steel beam node structure partially adopting fiber reinforced concrete. Background technique [0002] The steel concrete column-steel beam hybrid structure has the characteristics of high bearing capacity and good seismic performance. However, when the steel concrete column is connected with the steel beam, the core area of ​​the joint needs to arrange dense stirrups to restrain the concrete, so as to ensure that the longitudinal steel bars, steel and concrete work together. Arranging stirrups in the core area of ​​the joint requires piercing the steel beam, which weakens the bearing capacity of the steel beam. At the same time, the intensification of stirrups leads to difficulties in concrete pouring and vibration in the core area of ​​the joint, and it is difficult to ensure the quality of concrete pouring in the core area of ​​the joint,...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of complex construction of traditional steel concrete column-steel beam joints, low binding effect of stirrups on the core area of ​​joints, insufficient rotational capacity of joints, easy cracking, and brittle failure, etc. SRC COLUMN-STEEL BEAM JOINTS FOR REINFORCED CONCRETE

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