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PBL-stiffened CFST joints that can simultaneously improve joint tension and compression properties

A steel tube concrete and stiffening technology, which is applied in the direction of architecture and building structure, can solve the problems of insufficient chord width shear key and support layout space, reduced node bearing capacity, and influence on structural mechanical performance, etc., to achieve Effects of improving material utilization, reducing hot spot stress, and improving tensile properties

Active Publication Date: 2019-08-16
CHANGAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a PBL reinforced concrete-filled steel tube node that can simultaneously improve the tension and compression performance of the node, which solves the problem that the centerline of the web member and the centerline of the chord member of the node in the prior art cannot meet at one point, resulting in a decrease in the bearing capacity of the node, and The chord width is too small and the height is too large, resulting in insufficient space for the layout of shear keys and supports, which affects the mechanical performance of the structure

Method used

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  • PBL-stiffened CFST joints that can simultaneously improve joint tension and compression properties
  • PBL-stiffened CFST joints that can simultaneously improve joint tension and compression properties
  • PBL-stiffened CFST joints that can simultaneously improve joint tension and compression properties

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Embodiment Construction

[0033] The present invention is described in further detail below in conjunction with accompanying drawing:

[0034] PBL-stiffened concrete-filled steel tube joints that can improve both tension and compression properties of joints, including chord 1, the top plate of chord 1 is connected with tension web 2 and compression web 3, chord 1, tension web 2 and tension web 3 The overall pressure web 3 is K-shaped, the tension web 2 is steel, the width of the tension web 2 is equal to the width of the chord 1, the axial centerline of the chord 1, and the axial centerline of the tension web 2 It intersects with the axial centerline of the compression web 3; the aspect ratio of the chord 1 is greater than or equal to 2, and the chord 1 is filled with concrete 4.

[0035] It should be noted that in traditional K-type joints, the axial centerline of the tension web, the axial centerline of the compression web and the axial centerline of the chord cannot intersect at One point leads to ...

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Abstract

The invention discloses a PBL stiffening-type steel pipe concrete joint capable of improving tension and compression properties of the joint simultaneously. The PBL stiffening-type steel pipe concrete joint comprises a chord member. A top plate of the chord member is connected with tensioned web rods and a compressed web rod. The chord member, the tensioned web rods and the compressed web rod are in a K shape in a whole. The tensioned web rods are made of section steel. The tensioned web rod are as wide as the chord member. The axial center line of the chord member, the axial center lines of the tensioned web rods and the axial center line of the compressed web rod intersect mutually. The ratio of the width to the height of the chord member is larger than or equal to 2. The chord member is filled with concrete. The problem that the bearing capacity of a joint is reduced due to the fact that the center lines of web rods and the center line of a chord member of the joint in the prior art cannot be converged is solved. Joint eccentricity can be removed, the bearing capacity of the joint is improved, and the tension and compression properties of the joint are improved.

Description

technical field [0001] The invention belongs to the technical field of rectangular steel pipe truss structures, and in particular relates to a PBL stiffened steel pipe concrete joint that can simultaneously improve the tension and compression performance of the joint. Background technique [0002] The rectangular steel pipe truss structure has the advantages of light weight, beautiful appearance, large section moment of inertia, and convenient fabrication, and is widely used in offshore platforms, roof structures, and bridge engineering. Concrete is filled in the chords of the rectangular steel pipe truss structure to form a rectangular steel pipe concrete truss structure, which can further improve the mechanical performance and overall rigidity of the rectangular steel pipe truss structure. [0003] Since the joints of the rectangular steel pipe truss structure are directly welded by chords and webs, they usually become the weakest link in the rectangular steel pipe truss s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/58E04B1/30
CPCE04B1/30E04B1/5831
Inventor 刘永健姜磊侯蓓蓓刘彬戴立先李周马印平奉思东王康宁
Owner CHANGAN UNIV
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