CN211058058U

CN211058058U - Sleeve type buckling restrained brace

Info

Publication number: CN211058058U
Application number: CN201921877758.8U
Authority: CN
Inventors: 许立英; 吴应雄
Original assignee: Southwest University of Science and Technology
Current assignee: Southwest University of Science and Technology
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-07-21
Anticipated expiration: 2029-11-01

Abstract

The utility model discloses a telescopic bucking restraint is supported relates to building engineering structure shock attenuation technical field. It includes: a yieldable core panel; the inner wall of the UHPC sleeve is provided with a plurality of stiffening ribs which are sleeved on the yieldable core plate, two ends of the yieldable core plate respectively extend out from two ports of the UHPC sleeve, and the yieldable core plate and the UHPC sleeve are filled with hard filling materials; and the steel wire ropes are bound on the UHPC sleeve, and are sequentially arranged at equal intervals in the length direction of the UHPC sleeve. The sleeve type buckling restrained brace adopts the UHPC sleeve to replace the steel sleeve in the prior art, improves the fireproof performance of the sleeve, has light weight, saves steel, does not need to be subjected to anti-corrosion treatment, has strong durability and better compression resistance; the design of the stiffening ribs provides the lateral rigidity of the sleeve, so that the thickness of the sleeve can be reduced; the steel wire rope is bound outside the UHPC sleeve, so that the compression resistance of the sleeve can be further improved, and the sleeve is convenient to replace after a fire disaster occurs.

Description

Sleeve type buckling restrained brace

Technical Field

The utility model relates to a building engineering structure shock attenuation technical field particularly, relates to a telescopic bucking restraint is supported.

Background

A buckling restrained brace damper (BRB for short) used in the structural damping of the building engineering consists of a yieldable core plate, filling materials and a sleeve. The sleeve is also called a lateral supporting unit and is responsible for providing a restraining mechanism to prevent the yielding core plate from wholly or partially buckling when the yielding core plate is pressed. The sleeve of the buckling restrained brace used at present is a steel sleeve, but the steel consumption of the steel sleeve is large, the self weight is high, the outer surface needs fire prevention measures, and the maintenance is needed in the use stage, so the total cost is high; the steel sleeve is not provided with ribs, and the thickness of the sleeve can only be increased if the rigidity of the sleeve needs to be increased, so that the method increases the consumption of steel, and further increases the manufacturing cost.

SUMMERY OF THE UTILITY MODEL

The utility model provides a telescopic bucking restraint is supported, it can alleviate above-mentioned problem.

In order to alleviate the above-mentioned problem, the utility model discloses the technical scheme who takes as follows:

the utility model provides a telescopic bucking restraint is supported, include:

a yieldable core panel;

the inner wall of the UHPC sleeve is provided with a plurality of stiffening ribs which are sleeved on the yielding core plate, two ends of the yielding core plate respectively extend out from two ports of the UHPC sleeve, and the space between the yielding core plate and the UHPC sleeve is filled with hard filling materials;

and the steel wire ropes are bound on the UHPC sleeve, and the steel wire ropes are sequentially arranged at equal intervals in the length direction of the UHPC sleeve.

The technical effect of the technical scheme is as follows: the UHPC sleeve is adopted to replace the steel sleeve in the prior art, so that the fireproof performance of the sleeve is improved, the weight is light, steel is saved, corrosion resistance treatment is not needed, the durability is strong, and better compression resistance is realized; the design of the stiffening ribs provides the lateral rigidity of the sleeve, so that the thickness of the sleeve can be reduced; the steel wire rope is bound outside the UHPC sleeve, so that the compression resistance of the sleeve can be further improved, and the sleeve is convenient to replace after a fire disaster occurs.

Optionally, the yieldable core plate is comprised of a section of unbonded delaminated material within the UHPC sleeve, resilient connectors attached to either end of the section of unbonded delaminated material, the resilient connectors extending from within the UHPC sleeve.

Optionally, the cross-section of the yieldable core plate is a cross-shaped structure.

Optionally, the UHPC sleeve is a square cylinder.

Optionally, the stiffeners are arranged along the length of the UHPC sleeve, and in the circumferential direction, the stiffeners are arranged equidistantly in sequence.

The technical effect of the technical scheme is as follows: when the pressure-resistant device is acted by external force, the force is distributed more uniformly, and the pressure-resistant capacity is improved.

Optionally, a basket bolt is connected to an end of the steel wire rope, and the steel wire rope is bound on the UHPC sleeve through the basket bolt.

The technical effect of the technical scheme is as follows: the steel wire rope is convenient to bind, the operation is simple, and the maintenance is convenient.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a cross-sectional view of a telescopic flexion restraint support according to an embodiment;

FIG. 2 is an assembly view of the UHPC sleeve, the yieldable core plate, and the hard filler in an embodiment;

FIG. 3 is a schematic drawing of the binding of the steel cord to a UHPC jacket according to an embodiment;

in the figure: 1-UHPC sleeve, 2-hard filler, 3-yieldable core plate, 4-stiffening rib, 5-steel wire rope and 6-turn buckle.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Examples

Referring to fig. 1 to 3, the present embodiment provides a telescopic buckling restrained brace, which includes a yieldable core plate 3, a UHPC sleeve 1, and a plurality of steel cables 5; the inner wall of the UHPC sleeve 1 is provided with a plurality of stiffening ribs 4, the UHPC sleeve 1 is sleeved on the yieldable core plate 3, two ends of the yieldable core plate 3 respectively extend out from two ports of the UHPC sleeve 1, and the space between the yieldable core plate 3 and the UHPC sleeve 1 is filled with hard filler 2; the steel wire ropes 5 are bound on the UHPC sleeve 1, and the steel wire ropes 5 are sequentially arranged at equal intervals in the length direction of the UHPC sleeve 1.

In this embodiment, the UHPC sleeve 1 is used to replace a steel sleeve in the conventional art, and UHPC is an acronym for ultra-high performance concrete, which is a hotspot of current research and application, and is a novel fiber reinforced cement-based composite material composed of cement, mineral admixture, fine aggregate, high-strength fine steel fiber or organic synthetic fiber and other raw materials. The component made of UHPC has ultrahigh mechanical property, the compressive strength of the component can reach 6-9 times that of common concrete, and the tensile strength of the component is about 10 times that of the common concrete. The UHPC is made into a sleeve, so that the sleeve has better compression resistance compared with a steel sleeve, and can better restrain the core plate from buckling under compression;

compared with a steel sleeve, the UHPC sleeve 1 has the characteristics of excellent fireproof performance, light weight, steel saving, no need of antiseptic treatment, strong durability and the like.

In this embodiment, UHPC sleeve 1 adopts the prefabricated shaping of mill, and sleeve thickness can be according to the design requirement, for reducing sleeve thickness and improving the lateral stiffness that resists, is provided with stiffening rib 4 at the UPHC sleeve inner wall, and the integral type prefabricated shaping between stiffening rib 4 and the sleeve.

In the embodiment, in order to improve the out-of-plane rigidity of the UHPC sleeve 1, a steel wire rope 5 is bound along the length of the UHPC sleeve 1 at regular intervals, and the steel wire rope 5 can be replaced if a fire occurs.

As a preferred design of this embodiment, the yieldable core 3 is comprised of a section of unbonded delaminated material within the UHPC sleeve 1, and resilient connectors attached to either end of the section of unbonded delaminated material, the resilient connectors extending from the UHPC sleeve 1.

As a preferred structural design of the present embodiment, the cross section of the yieldable core plate 3 is a cross-shaped structure.

As a preferred design of this embodiment, the UHPC sleeve 1 is a square cylinder.

As a preferred structural design of the present embodiment, the stiffeners 4 are arranged along the length of the UHPC liner 1, and in the circumferential direction, the stiffeners 4 are arranged at equal distances in sequence.

As a preferable structural design of the embodiment, the end of the steel wire rope 5 is connected with a basket bolt 6, and the steel wire rope 5 is bound on the UHPC sleeve 1 through the basket bolt 6.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A telescopic buckling restrained brace, comprising:

a yieldable core panel;

2. The telescopic flexure-constrained brace of claim 1 wherein the yieldable core is comprised of a section of unbonded delaminated material within the UHPC sleeve, and resilient connectors attached to opposite ends of the section of unbonded delaminated material, the resilient connectors extending from within the UHPC sleeve.

3. The telescopic buckling-restrained brace of claim 1, wherein said yieldable core plate is a cross-shaped structure in cross-section.

4. The telescopic flexion restraint according to claim 1, wherein the UHPC sleeve is a square cylinder.

5. The telescopic buckling-restrained brace of claim 1, wherein said stiffeners are arranged along the length of said UHPC sleeve and are arranged in a circumferential direction, one after the other, equidistant between each stiffener.

6. The telescopic buckling restrained brace of claim 1, wherein a turn buckle is attached to the end of said wire rope, and said wire rope is secured to said UHPC sleeve by said turn buckle.