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Frame joint of rectangular concrete-filled steel tube column employing knee-bracing stiffened steel plates

A rectangular steel pipe and concrete column technology, applied in the direction of building and building structure, can solve the problems of reducing the overall bearing capacity and seismic performance of components, reducing the interaction between steel pipes and concrete, etc., so as to improve the restraint effect is not strong and uneven, Lateral Constraint Distribution Enhancement, Enhanced Constraint Effect Effect

Inactive Publication Date: 2015-11-04
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the steel pipes in the core area of ​​the joint and at the end of the column are prone to local buckling, local buckling will reduce the interaction between the steel pipe and concrete, thereby reducing the overall bearing capacity and seismic performance of the member

Method used

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  • Frame joint of rectangular concrete-filled steel tube column employing knee-bracing stiffened steel plates
  • Frame joint of rectangular concrete-filled steel tube column employing knee-bracing stiffened steel plates
  • Frame joint of rectangular concrete-filled steel tube column employing knee-bracing stiffened steel plates

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but it should not be understood that the scope of the subject matter of the present invention is limited to the following embodiments. Without departing from the above-mentioned technical ideas of the present invention, various replacements and changes made according to common technical knowledge and conventional means in this field shall be included in the protection scope of the present invention.

[0026] A rectangular steel tube concrete column frame joint reinforced with corner brace steel plates is characterized in that it includes corner brace stiffened steel plates 1 , column steel tubes 2 , I-shaped steel beams 6 and concrete 7 .

[0027] see image 3 , the column steel pipe 2 is made up of two channel steels 3 buckled and welded together (the notches of the two channel steels 3 are opposite). The junction of the two channel steels 3 is the pene...

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Abstract

The invention discloses a frame joint of a rectangular concrete-filled steel tube column employing knee-bracing stiffened steel plates. The frame joint comprises thin-walled rectangular steel tubes, cast-in-place concrete, I-steel beams and a knee-bracing steel plate stiffening rib.The knee-bracing stiffened steel plates are arranged in a joint core region and a plastic-hinge region for an end portion of a column steel tube. The stiffened steel plates and the inner wall of a steel tube are welded to three dividing points of a steel tube wall at 45-degree angles. The stiffened rectangular steel tubes and the I-steel beams are welded and are used for pouring concrete in order to form the frame joint of the rectangular concrete-filled steel tube column employing the knee-bracing stiffened steel plates.The frame joint of the rectangular concrete-filled steel tube column employing the knee-bracing stiffened steel plates has following beneficial effects: a novel joint form can effectively help delay local buckling of the steel tube, thereby improving constraint effect of concrete; tension of steel beam flanges can be effectively transferred by the knee-bracing steel plate stiffening rib and bending moment of the steel beams can be further effectively transferred such that the joint can satisfy the need of aseismic design; and the frame joint of the rectangular concrete-filled steel tube column employing the knee-bracing stiffened steel plates is novel framework node form featuring a fine mechanical property, convenient construction and economic feasibility.

Description

technical field [0001] The invention belongs to a building structure component, in particular to a frame node of a steel-concrete composite structure. Background technique [0002] Rectangular concrete-filled steel tube columns and their frame joints are new composite structural members with excellent seismic performance and quick and convenient construction, which is in line with the development trend of industrialization of building structures in my country at the present stage. The interaction between the steel pipe and the concrete in the rectangular steel tube concrete column is strong, and the material utilization efficiency is high. The steel pipes can be prefabricated in a factory and used as templates for concrete pouring on the construction site to speed up the construction progress; in case of fire, the internal concrete can absorb heat, delay the temperature rise of the steel pipes, and at the same time continue to bear the load after the bearing capacity of the ...

Claims

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Application Information

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IPC IPC(8): E04B1/58
Inventor 刘界鹏杨远龙周绪红何子奇甘丹
Owner CHONGQING UNIV
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