Self-resetting buckling-restrained brace and energy consumption method therefor

Patent metadata

Field	Value
Publication number	US-12392158-B2
Application number	US-202118021850-A
Country	US
Kind code	B2
Filing date	Aug 16, 2021
Priority date	Aug 18, 2020
Publication date	Aug 19, 2025
Grant date	Aug 19, 2025

Abstract

The invention relates to a self-resetting buckling-restrained brace, comprising a central positioning plate and secondary buckling-restrained units located on the left and right sides; the secondary buckling-restrained units each comprise a connection node, a brace core component, an outer sleeve steel pipe, a sliding load-bearing plate, a fixed load-bearing plate, a stabilization steel bar, steel frame braces, a Belleville spring and friction plates; the brace core component, the sliding load-bearing plate and the stabilization steel bar are connected in order and slide into the outer sleeve steel pipe; the middle portion of the brace core component penetrates through the outer sleeve steel pipe, and the outer end of the brace core component is fixedly connected to the connection node; the fixed load-bearing plate, the steel frame braces and the central positioning plate are connected in order, and an inner end of the stabilization steel bar penetrates through the fixed load-bearing plate; the friction plates in contact with the stabilization steel bar are provided between the fixed load-bearing plate and the central positioning plate; and the compressed Belleville spring is sleeved outside the stabilization steel bar. The present invention further relates to an energy consumption method by using the self-resetting buckling-restrained brace. The present invention has a simple structure, increases the bearing capacity of the main body structure, has a self-resetting capability, and belongs to the technical field of energy-consumption damping structures for buildings.

First claim

The invention claimed is:

1. A self-resetting buckling-restrained brace, comprising: a central positioning plate and two secondary buckling-restrained units located on two sides of the central positioning plate, wherein each of the two secondary buckling-restrained units comprises:
a connection node configured to be connected to a main body structure;
a brace core component, wherein an outer end of the brace core component is fixedly connected to the connection node;
an outer sleeve steel member fixed with the central positioning place, wherein a middle portion of the brace core component penetrates through the outer sleeve steel member;
a slidable load-bearing plate that is connected to an inner end of the brace core component;
a fixed load-bearing plate located inside the outer sleeve member;
a stabilization steel bar, wherein an inner end of the stabilization steel bar penetrates through the fixed load-bearing plate;
one or more steel frame braces located inside the outer sleeve steel member;
a spring sleeving the stabilization steel bar and located between the fixed load-bearing plate and the slidable load-bearing plate; and
one or more friction plates in contact with the stabilization steel bar and located between the fixed load-bearing place and the central positioning plate;
wherein the brace core component, the slidable load-bearing plate, and the stabilization steel bar are connected in order from outside toward inside and form a whole that is slidable within the outer sleeve steel member; and
wherein the fixed load-bearing plate, the one or more steel frame braces, and the central positioning plate are connected in order from outside toward inside.

2. The self-resetting buckling-restrained brace according to claim 1 , wherein the two secondary buckling-restrained units have the same structure and are symmetrically arranged on the two sides of the central positioning plate with respect to the central positioning plate, and the two secondary buckling-restrained units are arranged in an in-line form.

3. The self-resetting buckling-restrained brace according to claim 1 , wherein the brace core component is a rod-shaped structure with a square cross-section; the outer sleeve steel member is a square pipe; the fixed loaded-bearing plate, the slideable load-bearing plate, and the central positioning plate each has a square cross-section; and the stabilization steel bar has a circular cross-section.

4. The self-resetting buckling-restrained brace according to claim 1 , wherein four steel braces are arranged around the stabilization steel bar in up, down, front, and rear directions; four friction plates are arranged around the stabilization steel bar in the up, down, front, and rear directions and are clung to the stabilization steel bar; and each of the four friction plates have a rectangular cross-section.

5. The self-resetting buckling-restrained brace according to claim 1 , wherein the each of the two secondary buckling-restrained units further comprises a limiting plate for restricting the slidable load-bearing plate from sliding outwards, and the limiting plate is fixed on an inner side wall of the outer sleeve steel member.

6. The self-resetting buckling-restrained brace according to claim 1 , wherein the each of the two secondary buckling-restrained units further comprises two round limiting blocks, one of which is fixed on an inner side of the slidable load-bearing plate and the other is fixed on an outer side of the fixed load-bearing plate; end portions of spring sleeves are on the limiting blocks, and round holes for allowing the stabilization steel bar to pass through are formed in the limiting blocks.

7. The self-resetting buckling-restrained brace according to claim 1 , wherein a rigid connection is adopted between the brace core component and the slidable load-bearing plate, between the fixed load-bearing plate and the one or more steel frame braces, and between the one or more steel frame braces and the central positioning plate.

8. The self-resetting buckling brace according to claim 1 , wherein the connection node is configured to be connected to a gusset plate of the main body structure through a bolt.

9. An energy consumption method comprising:
providing the self-resetting buckling-restrained brace of claim 1 ;
consuming energy through interaction of the one or more friction plates and the stabilization steel bar;
consuming energy by the spring of each of the two secondary buckling-restrained units to improve the bearing capacity; and
providing a self-resetting capacity by the spring of each of the two secondary buckling-restrained units.

10. The energy consumption method according to claim 2 , further comprising:
equalizing bearing capacity of the two secondary buckling-restrained units by the self-resetting capacity provided by the spring of each of the two secondary buckling-restrained units.

Assignees

• Univ Guangzhou

Inventors

• Tan Ping
• Zhao Xiaofeng
• Li Yang
• Chen Lin
• Long Yaoqiu
• Zhou Fulin

Classifications

• E04B1/98 Primary

  against vibrations or shocks (on foundations E02D31/08); against mechanical destruction, e.g. by air-raids (against incendiary damage only E04B1/94; finishing work therefor E04F; buildings withstanding earthquake or the like, shelters, arrangements of splintercatching walls E04H9/00) · CPC title

• E04H9/021

  Bearing, supporting or connecting constructions specially adapted for such buildings · CPC title

• E04H9/024

  Structures with steel columns and beams · CPC title

• E04H9/0237 Primary

  Structural braces with damping devices · CPC title