CN211735875U

CN211735875U - Bending and shearing double-order damper

Info

Publication number: CN211735875U
Application number: CN201922390188.6U
Authority: CN
Inventors: 施竹珺; 盛刘平; 夏明明
Original assignee: Jiangsu Lubo Damping Technology Co ltd
Current assignee: SHANGHAI RB VIBRATION SCIENCE AND TECHNOLOGY Co.,Ltd.
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-10-23
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a crooked two-step attenuator of cuting, including the upper junction plate, the upper junction plate bottom is equipped with down the connecting plate, be equipped with two flange boards about the central line symmetry between upper junction plate and the lower connecting plate, two flange board central line department transverse connection has the shearing core, it runs through and is equipped with vertical stiffening rib and horizontal stiffening rib to cut core central line department, vertical stiffening rib both ends and upper junction plate and lower connecting plate fixed connection, two flange board outside symmetry is equipped with two sets of variable cross section round steel. The utility model discloses cut the core and begin crooked yield earlier under less earthquake and consume energy, and variable cross section round steel then bends and obey the power consumption under great earthquake, can satisfy the anti-seismic performance requirement of different degrees, simple structure, easy to maintain installs, and the durability is good etc..

Description

Bending and shearing double-order damper

Technical Field

The utility model relates to a civil engineering structure vibration control field, in particular to crooked shearing double step attenuator.

Background

The metal damper includes a shear type, a bending type, an axial type, and the like. The axial metal damper is mainly a yielding constraint support and consumes energy through tension-compression deformation. The shearing type metal damper and the bending type metal damper respectively consume energy through the shearing deformation and the bending deformation of the metal plate. The bending metal damper is connected between structural frame beams in a cantilever wall mode and the like, and steel supports and the like are adopted. The post-yield rigidity of the metal damper is generally 2-5% of the pre-yield rigidity, which indicates that the post-yield metal damper cannot provide rigidity for the structure, only can continuously consume energy, and cannot meet the design requirement of high interlayer response requirement under certain fortification earthquakes.

Therefore, it is necessary to invent a bending shear dual-stage damper to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a crooked shearing double step attenuator to the metal damper who proposes in solving above-mentioned background art can't provide rigidity for the structure after surging, can only constantly consume energy, can't satisfy the problem of the higher design demand of response requirement between certain earthquake lower floor of seting up defences.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a crooked two-order attenuator of cuting, includes the upper junction plate, the upper junction plate bottom is equipped with down the connecting plate, be equipped with two flange boards about the central line symmetry between upper junction plate and the lower connecting plate, two flange board central line department transverse connection has the shearing core, it runs through and is equipped with vertical stiffening rib and horizontal stiffening rib to cut core central line department, vertical stiffening rib both ends and upper junction plate and lower connecting plate fixed connection, two flange board outside symmetry is equipped with two sets of variable cross section round steel.

Preferably, the shear core plate has high initial rigidity and small yield displacement, the variable cross-section round steel has low initial rigidity and large yield displacement, and the target of graded yield energy consumption is achieved according to the two materials with distinct mechanical characteristics.

Preferably, the shear core plate and the variable cross-section round steel can realize full-section yielding under certain horizontal displacement.

Preferably, the upper connecting plate is connected with the upper structure through a pre-buried steel plate in a bolt connection or a welding connection mode; the lower connecting plate be through pre-buried steel sheet and substructure welded connection, this crooked shear type metal damper installs in building structure, can adopt cantilever wall formula to connect, "people" word props to connect and "V" word props to connect.

Preferably, the variable cross-section round steel is articulated with being connected of upper junction plate, and the variable cross-section round steel is rigid coupling with being connected of lower connecting plate, and during rigid coupling, lower connecting plate trompil in advance realizes closely cooperating to enclose the welding at lower connecting plate upper surface to the variable cross-section round steel, when articulated, open great round hole at the upper junction plate, the variable cross-section round steel realizes clearance fit with the upper junction plate.

The utility model has the advantages that:

when an earthquake acts on the structure, the structure generates interlayer displacement, the damper device is arranged between frame beams of the structure layer, corresponding horizontal displacement is generated between the upper connecting plate and the lower connecting plate, the shear core plate with smaller yield displacement enters a yield state firstly under the condition of frequent earthquake and fortification earthquake, and the variable cross-section round steel at two sides keeps elasticity to provide certain rigidity; rarely meets earthquake, the variable cross section round steel enters into the yielding state and cuts the core plate to consume energy together, compared with the traditional shearing type mild steel damper, the variable cross section round steel is added, the higher bending yield strength can be provided, and the energy consumption effect is better.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a side view of the present invention;

fig. 3 is a cross-sectional view taken along line a-a of fig. 1 in accordance with the present invention;

in the figure: 1 upper junction plate, 2 lower junction plates, 3 shear core plates, 4 vertical stiffening ribs, 5 flange plates, 6 variable cross-section round steel and 7 horizontal stiffening ribs.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, 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.

The utility model provides a crooked two-step attenuator of cuting as shown in fig. 1-3, including

upper junction plate

1, 1 bottom of upper junction plate is equipped with down connecting plate 2, be equipped with two flange plates 5, two about the central line symmetry between upper junction plate 1 and the lower connecting plate 2 flange plate 5 central line department transverse connection has shearing

core

3, 3 central line departments of shearing core run through and are equipped with vertical stiffening rib 4 and

horizontal stiffening rib

7, 4 both ends of vertical stiffening rib and

upper junction plate

1 and 2 fixed connection of lower connecting plate, two 5 outside symmetries of flange plate are equipped with two sets of variable cross section round steel 6.

Further, in the above technical scheme, the shear core plate 3 has large initial rigidity and small yield displacement, and the variable cross-section round steel 6 has small initial rigidity and large yield displacement, and the target of graded yield energy consumption is achieved according to the two materials with distinct mechanical characteristics;

further, in the above technical scheme, the shear core plate 3 and the variable cross-section round steel 6 can both realize full-cross-section yielding under a certain horizontal displacement;

further, in the above technical scheme, the upper connection plate 1 is connected with the upper structure by bolts or welding through an embedded steel plate; the lower connecting plate 2 is welded with a lower structure through an embedded steel plate, and the bending and shearing type metal damper is installed in a building structure and can be connected by adopting a cantilever wall type connection, a herringbone strut connection and a V-shaped strut connection;

further, in the above technical scheme, the connection of variable cross-section round steel 6 and upper connecting plate 1 is articulated, the connection of variable cross-section round steel 6 and lower connecting plate 2 is rigid connection, during rigid connection, lower connecting plate 2 is perforated in advance to realize tight fit, and enclosure welding is carried out to variable cross-section round steel 6 on lower connecting plate 2, and during articulated, a larger round hole is opened on upper connecting plate 1, and clearance fit is realized to variable cross-section round steel 6 and upper connecting plate 1.

This practical theory of operation:

referring to the attached drawings 1-3 of the specification, when an earthquake acts on the structure, the structure generates interlayer displacement, the damper device is arranged between frame beams of the structure layer, corresponding horizontal displacement is generated between the upper connecting plate 1 and the lower connecting plate 2, the shear core plate 3 with smaller yield displacement enters a yield state in case of frequent earthquake and fortification earthquake, and the variable cross-section round steel 6 at two sides keeps elasticity to provide certain rigidity; rarely meets earthquake, and the variable cross section round steel 6 enters into the yield state and cuts core plate 3 and consumes energy together, for traditional shearing type mild steel attenuator, has added variable cross section round steel 6, can provide higher bending yield strength, and the power consumption effect is better.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A bending shear double-step damper is characterized in that: including upper junction plate (1), upper junction plate (1) bottom is equipped with down connecting plate (2), be equipped with two flange boards (5) about the central line symmetry between upper junction plate (1) and lower connecting plate (2), two flange board (5) central line department transverse connection has shearing core board (3), it runs through and is equipped with vertical stiffening rib (4) and horizontal stiffening rib (7) to shear core board (3) central line department, vertical stiffening rib (4) both ends and upper junction plate (1) and lower connecting plate (2) fixed connection, two flange board (5) outside symmetry is equipped with two sets of variable cross section round steel (6).

2. The bending shear dual stage damper of claim 1, wherein: the shear core plate (3) is large in initial rigidity and small in yield displacement, and the variable-section round steel (6) is small in initial rigidity and large in yield displacement.

3. The bending shear dual stage damper of claim 1, wherein: the shear core plate (3) and the variable-section round steel (6) can realize full-section yielding under certain horizontal displacement.

4. The bending shear dual stage damper of claim 1, wherein: the upper connecting plate (1) is connected with an upper structure through an embedded steel plate by bolts or welding; the lower connecting plate (2) is connected with the lower structure in a welding mode through the embedded steel plate.

5. The bending shear dual stage damper of claim 1, wherein: the variable cross-section round steel (6) is hinged to the upper connecting plate (1), and the variable cross-section round steel (6) is rigidly connected to the lower connecting plate (2).