A Buckling Constrained Brace of Triple Round Steel Tubes

A buckling restraint, round steel pipe technology, applied in building types, buildings, building components, etc., can solve the problems of unable to support inner core restraint, unable to restrain the torsional deformation of energy-consuming circular pipes, etc., achieve light weight, restrain torsional deformation, improve The effect of fatigue performance

Active Publication Date: 2021-05-25
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the energy-dissipating inner core of the existing all-steel constraining components is directly connected to the nodes, resulting in the inability to constrain the supporting inner core in a full range, and the energy-dissipating circular tube is not treated with variable cross-section, resulting in the support under earthquake action. The lower plastic deformation is mainly concentrated at both ends of the round tube, and the torsional deformation of the energy-dissipating round tube cannot be suppressed; and a triple round steel tube buckling-constrained support is provided

Method used

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  • A Buckling Constrained Brace of Triple Round Steel Tubes
  • A Buckling Constrained Brace of Triple Round Steel Tubes
  • A Buckling Constrained Brace of Triple Round Steel Tubes

Examples

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Effect test

specific Embodiment approach 1

[0033] Embodiment 1: This embodiment is a triple round steel tube buckling restraint support, which consists of 2 inner restraint pipes 1, 1 energy dissipation pipe 2, 1 outer restraint pipe 3, 3 inserts 4, and 1 pad The ring 5 and 4 torsion limit rods 6 are composed;

[0034] The inner restraint pipe 1 is a round steel pipe, and both ends of the inner restraint pipe 1 are provided with cross-shaped slot holes 1-1, and the cross-shaped intersection of the cross-shaped groove holes 1-1 is on the axis of the inner restraint pipe 1, at Two pairs of torsion limit holes 1-2 are opened in the middle of the inner restraint tube 1 in sequence along the longitudinal direction. The line connecting the centers of the -2 circles is cross-shaped; the length of the cross-shaped slot hole 1-1 is 1.5 times the expected deformation of the triple round steel tube buckling restraint support;

[0035]The energy dissipation pipe 2 is a circular steel pipe, and four slots are longitudinally opened...

specific Embodiment approach 2

[0047] Embodiment 2: The difference between this embodiment and Embodiment 1 is: the A=D 1 -8 to 10 mm and others are the same as in the first embodiment.

specific Embodiment approach 3

[0048] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the shortest distances between the two pairs of torsion limiting holes 1-2 and the end of the inner restraint tube 1 are equal. Others are the same as in the first or second embodiment.

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Abstract

A buckling-constrained support of triple circular steel pipes relates to a buckling-constrained support. The purpose of the present invention is to solve the problem that the energy-dissipating inner core of the existing all-steel constraining components is directly connected to the nodes, resulting in the inability to constrain the supporting inner core in a full range, and the energy-dissipating circular tube is not treated with variable cross-section, resulting in the support under earthquake action. The lower plastic deformation is mainly concentrated at both ends of the round tube, and the torsional deformation of the energy-dissipating round tube cannot be suppressed; the buckling restraint support of the triple round steel tube is composed of an inner restraint tube, an energy-dissipating tube, an outer restraint tube, a connector, a backing ring and a torsion Composed of limit rods; the inner restraint tube, energy dissipation tube and outer restraint tube are set together from the inside to the outside in sequence; advantages: 1. Ensure that the energy dissipation inner core is restrained in a full range and improve the stability of the support; 2. Ensure plasticity The deformation is mainly concentrated in the grooved area. 3. Improved fatigue performance. The invention is mainly used for preparing buckling-constrained supports of triple circular steel pipes.

Description

technical field [0001] The present invention relates to a buckling restraint brace. Background technique [0002] Buckling restraint bracing is a new type of bracing with dual functions of ordinary bracing and metal damper. It can not only provide lateral stiffness and strength to the main structure under small earthquakes, but also use its own plastic deformation to consume during large earthquakes. Seismic energy can reduce or even avoid structural damage, so it has been widely used in engineering. [0003] With the increase of engineering applications of buckling restrained bracing and the development of related research, various high-performance buckling restrained bracing continues to appear. At present, buckling restraint braces can be divided into three categories according to the restraint components and combinations: reinforced concrete restraint components, steel and concrete combined restraint components, and all-steel restraint components. [0004] The main pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/98E04H9/02
CPCE04B1/98E04H9/021
Inventor 鲁军凯程东辉
Owner NORTHEAST FORESTRY UNIVERSITY
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