CN214784936U

CN214784936U - Two-end pin shaft type buckling restrained brace connecting node

Info

Publication number: CN214784936U
Application number: CN202022764266.7U
Authority: CN
Inventors: 黄永强; 朱晶
Original assignee: East China Architectural Design and Research Institute Co Ltd
Current assignee: East China Architectural Design and Research Institute Co Ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-11-19
Anticipated expiration: 2030-11-26

Abstract

The utility model belongs to a both ends round pin axle type bucking restraint supports connected node in building engineering field, technical scheme is: a pin shaft type buckling restrained brace connecting node with two ends is provided, wherein one end of the buckling restrained brace is provided with a first lug plate, and the other end of the buckling restrained brace is provided with a second lug plate; the first lug plate of the buckling restrained brace is connected with a pin shaft gusset plate through a first pin shaft; a second lug plate of the buckling restrained brace is connected with a bolt connecting plate through a second pin shaft, and the bolt connecting plate is connected with a bolt node plate through a plurality of high-strength bolts; the bolt gusset plate is welded on the second main body structure. The buckling restrained brace has the advantages of fully playing the energy consumption role of the buckling restrained brace, being simple in structure, convenient and fast to construct and having wide application prospect.

Description

Two-end pin shaft type buckling restrained brace connecting node

Technical Field

The utility model belongs to the building engineering field especially relates to a buckling restrained brace connected node.

Background

Among a plurality of building shock absorption products, the buckling restrained brace is a novel building shock absorption product which is most widely applied and has higher use efficiency. The buckling restrained brace consists of an axial force bracing unit (core material), a buckling restrained unit (sleeve) and a non-adhesive material in the sleeve. The sleeve can prevent the core material from wholly or partially buckling when being pressed, so that the buckling restrained brace can be buckled without instability when being pressed and pulled. The core material is generally made of low-yield-point steel, and large plastic deformation is allowed under the action of axial force, so that the hysteretic curve of the buckling restrained brace is full, and the buckling restrained brace has strong energy consumption capability in strong shock.

The connection form of the buckling restrained brace and the main body structure mainly comprises welding connection, high-strength bolt connection and pin shaft connection. The calculation assumption that the welding connection and the buckling restrained brace are used as the axle center stress member is inconsistent, the welding quality on site cannot be guaranteed, and the replacement is not convenient if the buckling restrained brace is damaged in the heavy earthquake. The high-strength bolt connection is convenient to install, and can adapt to larger installation errors through on-site hole expansion, but when the tonnage of the buckling restrained brace is larger, the size of the gusset plate is longer, the length of the yielding energy dissipation segment of the buckling restrained brace is reduced, and the influence on the energy dissipation capacity of the buckling restrained brace under large earthquake is larger. In addition, bolted connection is not an ideal hinged joint, and the secondary bending moment influences the energy consumption capability of the buckling restrained brace and can reduce the bearing capacity of the joint. The pin shaft connection is an ideal hinged joint, accords with mechanical assumption, has a simple and elegant appearance, and is particularly suitable for the condition of exposed support. In the traditional pin shaft connection technology, the processing precision of a pin shaft hole is controlled to be about 1mm, and the buckling restrained brace cannot play an energy dissipation role within the deformation of 1 mm; if the machining precision of the pin shaft hole is improved to 0.25mm, the energy consumption capability of the buckling restrained brace is greatly improved, but the too high precision brings difficulty to field installation.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a both ends round pin axle type bucking restraint brace connected node, its full play bucking restraint brace's power consumption effect, and simple structure, construction convenience is swift, has wide application prospect.

The technical scheme of the utility model is that: a pin shaft type buckling restrained brace connecting node with two ends is provided, wherein one end of the buckling restrained brace is provided with a first lug plate, and the other end of the buckling restrained brace is provided with a second lug plate; the first lug plate of the buckling restrained brace is connected with a pin shaft gusset plate through a first pin shaft; a second lug plate of the buckling restrained brace is connected with a bolt connecting plate through a second pin shaft, and the bolt connecting plate is connected with a bolt node plate through a plurality of high-strength bolts; the bolt gusset plate is welded on the second main body structure.

Based on the technical characteristics: the first main structure is a structural beam or beam column node.

Based on the technical characteristics: the second main structure is a structural beam or beam column node.

Based on the technical characteristics: the two bolt connecting plates are used, and the bolt node plates are clamped between the two ends of the two bolt connecting plates and connected through high-strength bolts; and the middle of the other end of the clamp plate is clamped by the two second lug plates from the outer side, and the second pin shaft is connected with the second lug plates, the bolt connecting plate and the clamp plate.

Based on the technical characteristics: the first ear plate is two, cliies the round pin axle gusset plate that both sides welded the flitch, and first round pin hub connection is first ear plate, flitch and round pin axle gusset plate.

One end of the middle buckling restrained brace of the utility model is connected with the first main structure by a pin shaft; the other end is connected with the second main body structure in a matching way by a pin shaft and a high-strength bolt. The high-precision pin shaft connection ensures the exertion of the energy consumption capability of the buckling restrained brace, and the high-strength bolt connection eliminates the hidden trouble that the on-site buckling restrained brace cannot be installed.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

1. the utility model discloses a both ends round pin axle type bucking restraint brace connected node is the articulated node of ideal, accords with the mechanics hypothesis, and the round pin axle processing technology of high accuracy has guaranteed its power consumption ability of performance that bucking restraint brace can the at utmost.

2. Through setting up the bolted connection board in bucking restraint support one end, reduced the degree of difficulty of on-the-spot installation, can adopt the mode of on-the-spot reaming to adapt to great installation error when necessary.

3. Because the pin shaft and the high-strength bolt are matched and connected, the number of the high-strength bolts is less when only the bolts are used for connection, the installation is convenient and rapid, no welding workload is generated on the site, and the buckling restrained brace is more convenient to replace in the later period.

4. The bolt node plates are inserted between the bolt connecting plates, and the length of the node is controlled.

Drawings

Fig. 1 is a schematic view of the structure of the middle buckling restrained brace of the present invention, in which one end is connected to the first main structure by a pin.

Fig. 2 is the structure schematic diagram of the other end of the middle buckling restrained brace and the second main structure of the utility model adopting the pin shaft and the high-strength bolt for matching connection.

FIG. 3 is a cross-sectional view of the gusset taken along A-A of FIG. 1.

Fig. 4 is a cross-sectional view of the web taken along line B-B of fig. 2.

Fig. 5 is a cross-sectional view of the web taken along the direction C-C in fig. 2.

The component symbols in the drawings are schematically shown as: a first ear plate 1; a second ear plate 1'; a pin node plate 2; a first pin 3; a second pin 3'; a flitch 4; a first steel beam 6; a second steel beam 6'; a steel column 7; a bolt connecting plate 8; a high-strength bolt 9; a bolt gusset plate 10; a clamping plate 11.

Detailed Description

The following describes the present invention in further detail with reference to the accompanying drawings. These embodiments are provided only for illustrating the present invention and are not intended to limit the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1 and 3, one end of the buckling restrained brace is pinned to the first body structure. The first body structure shown in fig. 1 is a first steel beam 6. The lower flange of the steel beam 6 is provided with a pin roll gusset plate 2, and both sides of the pin roll gusset plate are welded with flitch plates 4. The first lug plate 1 at one end of the buckling restrained brace is connected with a pin shaft gusset plate 2 welded with a flitch plate 4 through a pin shaft 3. The flitch 4 can adopt high-strength high-performance steel, and the thickness of the first lug plate 1 can be reduced.

As shown in fig. 2, the other end of the buckling restrained brace is connected with the second main body structure through a pin shaft and a high-strength bolt in a matching manner. The second main structure is a beam-column joint of the steel column 7 and the second steel beam 6', and a bolt joint plate 10 is arranged at the beam-column joint. As shown in fig. 4, the bolt connecting plates 8 are two, and one end of each bolt connecting plate is clamped by a bolt node plate 10 and connected by a high-strength bolt 9. As shown in fig. 5, the other end of the bolt-connecting plate 8 is sandwiched by the clamping plate 11 and is simultaneously clamped from the outside by the second lug plate 1 ', and the second pin 3 ' connects the second lug plate 1 ', the bolt-connecting plate 8 and the clamping plate 11.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A pin shaft type buckling restrained brace connecting node with two ends is characterized in that one end of the buckling restrained brace is provided with a first lug plate (1), and the other end of the buckling restrained brace is provided with a second lug plate (1'); the method is characterized in that:

the first lug plate (1) of the buckling restrained brace is connected with a pin shaft gusset plate (2) through a first pin shaft (3), and the pin shaft gusset plate (2) is welded on a first main body structure;

the second lug plate (1 ') of the buckling restrained brace is connected with a bolt connecting plate (8) through a second pin shaft (3'), and the bolt connecting plate (8) is connected with a bolt node plate (10) through a plurality of high-strength bolts (9); the bolt gusset plate (10) is welded to the second body structure.

2. The connection node of the buckling restrained brace with the pin shafts at two ends according to claim 1, is characterized in that: the first main structure is a structural beam or beam column node.

3. The connection node of the buckling restrained brace with the pin shafts at two ends according to claim 1, is characterized in that: the second main structure is a structural beam or beam column node.

4. The connection node of the buckling restrained brace with the pin shafts at two ends according to claim 1, is characterized in that: the two bolt connecting plates (8) are clamped between the two ends of the bolt connecting plates (10) and connected through the high-strength bolts (9); the middle of the other end of the connecting rod clamps a clamping plate (11) and is clamped by the two second lug plates (1 ') from the outer side, and the second pin shaft (3 ') is connected with the second lug plates (1 '), the bolt connecting plate (8) and the clamping plate (11).

5. The connection node of the buckling restrained brace with the pin shafts at two ends according to claim 1, is characterized in that: the first ear plates (1) are two, the pin shaft joint plate (2) with the flitch plates (4) welded on two sides is clamped, and the first pin shaft (3) is connected with the first ear plates (1), the flitch plates (4) and the pin shaft joint plate (2).