CN215107786U

CN215107786U - Double-order yielding buckling restrained brace component

Info

Publication number: CN215107786U
Application number: CN202120536775.6U
Authority: CN
Inventors: 王海巍; 马佳文; 张凯强; 张福寿
Original assignee: Shanghai Steel Building Damper Technology Co ltd
Current assignee: Shanghai Steel Building Damper Technology Co ltd
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2021-12-10
Anticipated expiration: 2031-03-16

Abstract

The utility model discloses a double-step yielding buckling restrained brace component, belonging to the damping field of building structures, comprising a buckling restrained brace, a cylindrical external friction damper, a fixed connecting plate and a bottom plate; one end of the buckling restrained brace is connected with the fixed connecting plate, and the other end of the buckling restrained brace is fixed on the bottom plate; the barrel type external friction damper is connected with the bottom plate and wraps the buckling restrained brace. The utility model discloses can regard as one-level energy dissipation component under the little shake, friction damping system wherein gets into first-order yield and power consumption, can regard as second grade energy dissipation component under the condition of middle and big shake, and the power consumption core of bucking restraint support system wherein gets into the second order and yields and power consumption. The supporting member can meet the arrangement requirements of different members and protect the safety of buildings.

Description

Double-order yielding buckling restrained brace component

Technical Field

The utility model belongs to building structure's shock attenuation field especially relates to a two-step buckling restrained brace component.

Background

The earthquake has strong and weak points, the influence of earthquakes with different earthquake magnitudes on the structure is greatly different, and the traditional damping component can only be controlled according to one situation, for example, a friction type damper can yield and consume energy in the case of small earthquake, but cannot provide enough rigidity in the case of large earthquake; the common buckling restrained brace can enter a yielding energy consumption stage during a medium earthquake or a large earthquake, but is in an elastic stage during a small earthquake, so that the energy consumption effect cannot be achieved. If two kinds of dampers are adopted at the same time, the economy is not achieved, and certain difficulty is brought to the damping design work under the condition.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that exists, the utility model aims at providing a two-step buckling restrained brace component of surging, this component can be well combined friction damping power consumption system and the power consumption system of bucking restrained brace for this component only has the friction power consumption system to participate in the power consumption in the small earthquake, the power consumption core does not participate in the power consumption, when the major earthquake takes place, the power consumption core dissipates the energy of earthquake input with the friction power consumption system simultaneously, guarantee overall structure's safety and stability performance, better protection the safety of building.

The utility model adopts the following technical scheme:

a double-step yielding buckling restrained brace component comprises a buckling restrained brace, a cylindrical external friction damper, a fixed connecting plate and a bottom plate; one end of the buckling restrained brace is connected with the fixed connecting plate, and the other end of the buckling restrained brace is fixed on the bottom plate; the barrel type external friction damper is connected with the bottom plate and wraps the buckling restrained brace.

Furthermore, the buckling restrained brace comprises a sleeve, an energy-consuming core plate and a filler, wherein the energy-consuming core plate is arranged inside the sleeve, the filler is arranged between the sleeve and the energy-consuming core plate, the energy-consuming core plate and the filler are isolated by an isolation material, the right end of the energy-consuming core plate extends out of the sleeve, and the fixed connecting plate is respectively connected with the left end of the sleeve and the left end of the energy-consuming core plate in a welding mode.

Further, the external friction damper of cylinder includes U type friction apron, friction disc, high strength bolt, dish spring, the bonding material laminating is in the buckling restrained brace right-hand member outside for the friction disc, and two U type friction apron cover the friction disc, wraps up in the buckling restrained brace right-hand member outside simultaneously, high strength bolt passes two U type friction apron upper and lower tip to be equipped with the dish spring in nut department, U type friction apron, friction disc and buckling restrained brace are fixed continuous.

Further, the sleeve is a round steel tube.

Furthermore, the energy dissipation core plate is made of mild steel or low-yield-strength steel, and the cross section of the energy dissipation core plate is in one of a straight shape, an I-shaped shape and a Chinese character 'wang' shape.

Further, the filler is concrete.

Furthermore, the U-shaped friction cover plates are symmetrically arranged on the left side and the right side of the buckling restrained brace.

The utility model has the advantages and beneficial effects that:

1. the utility model discloses two-step yield buckling restrained brace component can well combine the friction damping system with the buckling restrained brace system, borrow this to reach the effect that the second order is surmised, only friction damping system participates in the power consumption and regards as one-level energy dissipation original paper under the little shake promptly, and friction damping power consumption system can consume energy with the power consumption core jointly in big shake, and a component can reach the effect of two components in the past, can adapt to the component arrangement environment of multiple difference, protects the safety of building.

2. The friction damping system and the buckling restrained brace system belong to a parallel connection relation, wherein the friction damper takes a sleeve of the buckling restrained brace as a connecting piece, so that the size of a component can be reduced, the structure is simple, and the preset requirements can be met while materials are saved.

3. After a small earthquake or long-time micro wind vibration occurs, the friction damping system is worn, and the friction energy dissipation component in the component can be replaced without affecting the performance of the main energy dissipation core plate part.

4. In a traditional friction damping system, bolts for providing pretightening force are mostly arranged in the middle of a component, and the arrangement method enables the width of the component to be too large, so that difficulty is brought to structural design. The utility model discloses two-step yield buckling restrained brace component has adopted the design of U type friction apron, its advantage is that U type friction apron shifts the bolt pretension position from the component middle part to both sides about the component, has reduced the width size of component greatly, provides more selections for structural design.

Drawings

Fig. 1 is an exploded view of a two-step yielding buckling restrained brace component of the present invention;

fig. 2 is a top view of the dual-step yielding buckling restrained brace member of the present invention;

fig. 3 is a front view of the dual-step yielding buckling restrained brace member of the present invention;

fig. 4 is a left side view of the double-step yielding buckling restrained brace component of the utility model;

FIG. 5 is a right side view of the dual-step buckling restrained brace member of the present invention;

fig. 6 is an axonometric view of the double-step yielding buckling restrained brace member of the utility model;

FIG. 7 is a cross-sectional view of a linear energy dissipating core;

FIG. 8 is a cross-sectional view of an I-shaped energy-dissipating core plate;

fig. 9 is a cross-sectional view of the energy-dissipating core plate shaped like a Chinese character 'wang'.

In the figure: the buckling restrained brace is 1, the cylindrical external friction damper is 2, the fixed connecting plate is 3, the bottom plate is 4, the sleeve is 5, the energy dissipation core plate is 6, the filler is 7, the U-shaped friction cover plate is 8, the friction plate is 9, the high-strength bolt is 10, and the disc spring is 11.

Detailed Description

For further explanation of the present invention, the following detailed description of the present invention is provided with reference to the drawings and examples, which should not be construed as limiting the scope of the present 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.

Example (b):

the embodiment provides a double-step yielding buckling restrained brace component, as shown in fig. 6, which comprises a buckling restrained brace 1, a cylindrical external friction damper 2, a fixed connecting plate 3 and a bottom plate 4; one end of the buckling restrained brace 1 is connected with the fixed connecting plate 3, and the other end of the buckling restrained brace is fixed on the bottom plate 4; the cylindrical external friction damper 2 is connected with the bottom plate 4 and wraps the buckling restrained brace 1.

As shown in fig. 1 to 5, the buckling restrained brace 1 includes a sleeve 5, an energy dissipation core plate 6 and a filler 7, the sleeve 5 is located outside the energy dissipation core plate 6, the sleeve 5 is a round steel pipe, the filler 7 is filled between the sleeve 5 and the energy dissipation core plate 6, the energy dissipation core plate 6 and the filler 7 are isolated by an isolation material, the filler 7 is concrete, the right end of the energy dissipation core plate 6 extends out of the sleeve 5, and the fixed connection plate 3 is respectively welded to the left end of the sleeve 5 and the left end of the energy dissipation core plate 6.

The external friction damper 2 of cylinder includes U type friction apron 8, friction disc 9, high strength bolt 10, dish spring 11, friction disc 9 is laminated in 2 right-hand members outsides of sleeve for the bonding material, and two U type friction apron 8 cover friction disc 9 wraps up the 5 right-hand members outsides of sleeve in the buckling restrained brace 1 simultaneously in buckling restrained brace 1, high strength bolt 10 passes two U type friction apron 8 upper and lower tip to add dish spring 11 in nut department, with U type friction apron 8, friction disc 9 and the buckling restrained brace 1 in sleeve 5 fixed, U type friction apron 8 is in telescopic left and right sides symmetrical arrangement.

As shown in fig. 7 to 9, the energy-consuming core plate 6 is made of mild steel or low-yield-strength steel, the shape of the cross section is a straight shape by default, and if the requirement on the bearing capacity is high, the shape can be changed into an i shape or a king shape.

When the building structure generates small displacement under the action of an earthquake, the energy consumption core plate 6 is in an elastic state, and the U-shaped friction cover plate 8 and the friction plate 9 of the cylindrical external friction damper 2 generate relative sliding so as to consume energy. When the building structure generates large displacement under the action of an earthquake, the energy-consuming core plate 6 begins to consume energy after entering a yield state, and the buckling restrained brace 1 and the cylindrical external friction damper 2 consume energy at the same time.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. A two-step yielding buckling restrained brace component is characterized in that: the buckling restrained brace comprises a buckling restrained brace (1), a cylindrical external friction damper (2), a fixed connecting plate (3) and a bottom plate (4); one end of the buckling restrained brace (1) is connected with the fixed connecting plate (3), and the other end of the buckling restrained brace is fixed on the bottom plate (4); the cylindrical external friction damper (2) is connected with the bottom plate (4), and the cylindrical external friction damper (2) is wrapped outside the buckling restrained brace (1).

2. A two-step yielding buckling-restrained brace member as recited in claim 1, wherein: the buckling restrained brace (1) comprises a sleeve (5), an energy-consuming core plate (6) and a filler (7), wherein the energy-consuming core plate (6) is arranged inside the sleeve (5), the filler (7) is arranged between the sleeve (5) and the energy-consuming core plate (6), the energy-consuming core plate (6) and the filler (7) are isolated by an isolation material, the right end of the energy-consuming core plate (6) extends out of the sleeve (5), and a fixed connecting plate (3) is respectively welded and connected with the left end of the sleeve (5) and the left end of the energy-consuming core plate (6).

3. A two-step yielding buckling-restrained brace member as recited in claim 1, wherein: the external friction damper of cylinder (2) is including U type friction apron (8), friction disc (9), high strength bolt (10), dish spring (11), friction disc (9) are laminated in the buckling restrained brace (1) right-hand member outside with bonding material, and two U type friction apron (8) cover friction disc (9), and the parcel is in the buckling restrained brace (1) right-hand member outside simultaneously, high strength bolt (10) pass two U type friction apron (8) upper and lower tip to be equipped with dish spring (11) in nut department, U type friction apron (8), friction disc (9) and buckling restrained brace (1) are fixed continuous.

4. A two-step yielding buckling-restrained brace member as recited in claim 2, wherein: the sleeve (5) is a round steel tube.

5. A two-step yielding buckling-restrained brace member as recited in claim 2, wherein: the energy dissipation core plate (6) is made of mild steel or low-yield-strength steel, and the cross section of the energy dissipation core plate is in one of a straight shape, an I-shaped shape and a Chinese character 'wang' shape.

6. A two-step yielding buckling-restrained brace member as recited in claim 2, wherein: the filler (7) is concrete.

7. A two-step yielding buckling-restrained brace member as recited in claim 3, wherein: the U-shaped friction cover plates (8) are symmetrically arranged on the left side and the right side of the buckling restrained brace (1).