CN103758243A

CN103758243A - All-steel buckling restrained brace provided with inner cavity

Info

Publication number: CN103758243A
Application number: CN201410003928.5A
Authority: CN
Inventors: 郭彦林; 童精中; 郇志乾
Original assignee: Tsinghua University
Current assignee: Tsinghua University
Priority date: 2014-01-03
Filing date: 2014-01-03
Publication date: 2014-04-30
Anticipated expiration: 2034-01-03
Also published as: CN103758243B

Abstract

The invention relates to an all-steel buckling restrained brace provided with an inner cavity and belongs to the field of structural engineering. The all-steel buckling restrained brace is characterized in that two horizontally shaped inner-core steel plates are separately arranged and respectively wrapped through a peripheral component, and solid rubber is adhered to the surface of the area, wrapped through the constraint component, of each horizontal shaped inner-core steel plate; each horizontally shaped inner-core steel plate provided with an overhanging section is longer than the corresponding constraint component; the two constraint components are formed by welding four plates, wherein two of the four plates are longer to form overhanging sections of the constraint components; an end cover plate is arranged at two ends of each constraint component, and the horizontally shaped inner-core steel plates penetrates rectangular holes in the end cover plates; the cover plates and the constraint components are connected on the peripheries in a welded manner to form the closed inner cavity. All-steel components are adopted in the buckling restrained brace, the components are connected by welding, and the buckling restrained brace is suitable for highly-industrialized production; by the adoption of limb-separated type sections, the deficiency of the buckling restrained brace of the integrated sections in large-tonnage component design is made up; durability and corrosion resistance of the components are improved through butt welding of the constraint components and the arrangement of the end cover plates.

Description

A kind of anti-buckling support of all steel with internal cavity

Technical field

The present invention relates to a kind of anti-buckling support of all steel with internal cavity, belong to technical field of structural engineering.

Background technology

Curvature-prevention support component, as a class building unit of energy-dissipating and shock-absorbing excellent performance, has obtained promotion and application to a certain extent in China in recent years.In general, anti-buckling support is comprised of inner core component and peripheral constraint component, and under little shake effect, the inner core component of curvature-prevention support component keeps elasticity, as the lateral resistant member of agent structure, uses; Under middle shake and large shake effect, the inner core component rate of anti-buckling support is introduced into surrender, plays the effect of protection main body frame, consumes a large amount of inputting seismic energies simultaneously, has very full hysteresis loop.

Tradition curvature-prevention support component generally adopts steel concrete restraining tube, and inner core component adopts the steel of low-yield, high ductility, and by pasting vulcanie on inner core component surface, while preventing kernel flexing, occurs firmly to contact with confining part; And cross section generally adopts the form of global sections.There is following shortcoming in above-mentioned curvature-prevention support component: (1) concrete wet trade process complexity, and construction precision is low, is unfavorable for large-scale industrial production, and is subject to the concrete strength development restriction in the length of time; (2) if large-tonnage curvature-prevention support component adopts monolithic cross section, will cause kernel and member integrated cross section excessive, waste material; (3) concrete confining part, from great, easily produces the problem that transportation is difficult when member tonnage is larger.

For solving the anti-buckling supporting section area in monolithic cross section and the excessive problem of conducting oneself with dignity under large-tonnage, can be by inner core component be separated, adopt the curvature-prevention support component of separate type or lattice, but there is following shortcoming: the anti-buckling support of (1) lattice connects two members by batten plate and divides limb, cause curvature-prevention support component internal structure to expose, affect the attractive in appearance of member appearance; (2) in long-term use procedure, the inner parts of anti-buckling support easily run into the endurance issues such as corrosion, especially in the middle of humidity or sour environment.

Summary of the invention

The anti-buckling support of all steel with internal cavity proposed by the invention adopts a point limb formula cross section, and interior nuclear cross section is fully launched, and significantly saves raw material, has especially made up the anti-buckling deficiency being supported in large-tonnage member designs in monolithic cross section; Adopt all steel member, between parts, all adopt and be welded to connect, be convenient to production and processing, be suitable for intense industrialization and produce; By the butt welding of confining part and the setting of closing panel, curvature-prevention support component internal structure is not exposed, time more attractive in appearance, the durability of lifting member and corrosion resistance.

Have the anti-buckling support of all steel of internal cavity, it is characterized in that, described anti-buckling support is by forming with lower member: two in-line kernel steel plate, two confining parts, vulcanie, two closing panels, connect floor.

Described two in-line kernel steel plate adopt separate layout, are wrapped up respectively by a peripheral member, in the region surface of its restrained member parcel, paste vulcanie; In-line kernel steel plate length is greater than the length of confining part, and kernel steel plate is with overhanging section.

Totally two of described confining parts, measure-alike, adopt four plate welding compositions, wherein two flat boards are longer, form overhanging section of confining part plate; Two confining parts connect in overhanging section of employing butt weld of a pair of described plate of the same side.

Totally two of described closing panels, measure-alike, be rectangular flat, above with two rectangular openings; Described rectangular opening shape is identical with in-line kernel steel plate cross section; Two closing panels are placed in curvature-prevention support component two ends, and in-line kernel steel plate is passed from rectangular opening; Closing panel surrounding and confining part are by being welded to connect; Both ends cover plate and two confining parts form the sealing internal cavity of curvature-prevention support component inside jointly.

Described connection floor is rectangle plain plate, and its length equates with the overhanging intersegmental distance of two in-line kernel steel plate; Connecting floor adopts twin fillet wolt to be connected with overhanging section of kernel one word steel plate; Connect between floor and closing panel and have certain spacing, spacing size is determined according to connecting floor deformation limit value under axial pressure effect.

Described connection floor is connected with structural framing with hinged or the form that rigidly connects; Described being articulated and connected, by open single pin hole on connection floor, and is connected realization with the otic placode being fixed on described structural framing by bearing pin; Describedly rigidly connect connection, by opening bolt hole connecting on floor, and by high-strength bolt, be connected realization with the cover plate being fixed on described structural framing.

This patent has proposed a kind of novel anti-buckling support of all steel with internal cavity, has the following advantages:

(1) adopt a point limb formula cross section, the interior nuclear cross section of curvature-prevention support component is launched more, bending rigidity promotes greatly, more saves material, remarkable in economical benefits in the design of the anti-buckling support of large-tonnage;

(2) adopt all steel member, between its parts, adopt and be welded to connect, can be at factory's global formation, the inconvenience of not only having avoided concrete wet trade to bring, is convenient to carry out intense industrialization production more;

(3) by the butt welding of confining part and the setting of closing panel, curvature-prevention support component internal structure is not exposed, time more attractive in appearance, the durability of lifting member and corrosion resistance.

Accompanying drawing explanation

Fig. 1 is the sectional view with the anti-buckling support of all steel of internal cavity;

Fig. 2 is the lateral view with the anti-buckling support of all steel of internal cavity;

Fig. 3 is the composition diagram of confining part;

Fig. 4 is the sectional view of closing panel;

Fig. 5 is the graphics with the anti-buckling support of all steel of internal cavity.

The specific embodiment

Below in conjunction with accompanying drawing 1～4, describe the embodiment of this patent in detail.

As shown in Figure 1, 2, a kind of all steel curvature-prevention support component with internal cavity comprises with lower member:

1---in-line kernel steel plate, comprising 1-1---there is the anti-buckling support kernel steel plate one of all steel of internal cavity; 1-2---there is the anti-buckling support kernel steel plate two of all steel of internal cavity;

2---confining part, comprising 2-1---there is the anti-buckling support confining part one of all steel of internal cavity; 2-2---there is the anti-buckling support confining part two of all steel of internal cavity;

3---vulcanie;

4---closing panel;

5---connect floor;

The all steel curvature-prevention support component as shown in Figure 1,5, with internal cavity comprises two points of limbs; Described point of limb one is comprised of in-line kernel steel plate one 1-1, confining part one 2-1 and vulcanie 3; Described point of limb two is comprised of in-line kernel steel plate two 1-2, confining part two 2-2 and vulcanie 3; The region surface of wrapping up at the restrained member 2 of in-line kernel steel plate 1 is pasted vulcanie 3;

Totally two of described confining parts 2, its length is less than the length of in-line kernel steel plate 1; As shown in Figure 3, confining part 2 is by four

block plates

6,7,8,9 by being welded to form, and its

light plate

8,9 is longer, forms overhanging section of confining part 2;

Described connection floor 5 all adopts twin fillet wolt to be connected with overhanging section of two in-line kernel steel plate 1; Described connection floor 5 is connected with structural framing, can adopt hinged or rigidly connect; Described being articulated and connected, connects floor 5 and opens single pin shaft hole, is connected realization with the otic placode being fixed on described structural framing by bearing pin; Described steel connects in succession, connects floor 5 and opens bolt hole, is connected realization with the cover plate being fixed on described structural framing by high-strength bolt; Connect floor 5 and leave in the longitudinal direction spacing g with closing panel 4, the numerical value of g is determined according to connecting floor deformation limit value under axial pressure effect;

As shown in Fig. 2,4,5, closing panel 4 is rectangle plain plate, and top is with two rectangular openings 10; Described rectangular opening size is identical with in-line kernel steel plate 1 cross section; Closing panel 4 is placed in curvature-prevention support component two ends, and in-line kernel steel plate 1 is passed from rectangular opening 10; Closing panel 4 surroundings and confining part 2 are by being welded to connect; Both ends cover plate 4 and the common sealing internal cavity that forms curvature-prevention support component inside of two confining parts 2.

Claims

1. have the anti-buckling support of all steel of internal cavity, it is characterized in that, described anti-buckling support is by forming with lower member: in-line kernel steel plate, confining part, vulcanie, closing panel, connection floor; Described two in-line kernel steel plate adopt separate layout, are wrapped up respectively by a peripheral member, in the region surface of its restrained member parcel, paste vulcanie; In-line kernel steel plate length is greater than the length of confining part, and kernel steel plate is with overhanging section; Totally two of described confining parts, measure-alike, adopt four plate welding compositions, wherein two flat boards are longer, form overhanging section of confining part plate; Two confining parts connect in overhanging section of employing butt weld of a pair of described plate of the same side; Totally two of described closing panels, measure-alike, be rectangular flat, above with two rectangular openings; Described rectangular opening shape is identical with in-line kernel steel plate cross section; Two closing panels are placed in curvature-prevention support component two ends, and in-line kernel steel plate is passed from rectangular opening; Closing panel surrounding and confining part are by being welded to connect; Both ends cover plate and two confining parts form the sealing internal cavity of curvature-prevention support component inside jointly; Described connection floor is rectangle plain plate, and its length equates with the overhanging intersegmental distance of two in-line kernel steel plate; Connecting floor adopts twin fillet wolt to be connected with overhanging section of kernel one word steel plate; Connect between floor and closing panel and have certain spacing, spacing size is determined according to connecting floor deformation limit value under axial pressure effect.

2. curvature-prevention support component according to claim 1, is characterized in that, described connection floor is connected with structural framing with hinged or the form that rigidly connects; Described being articulated and connected, by open single pin hole on connection floor, and is connected realization with the otic placode being fixed on described structural framing by bearing pin; Describedly rigidly connect connection, by opening bolt hole connecting on floor, and by high-strength bolt, be connected realization with the cover plate being fixed on described structural framing.