CN203462401U - Metal damper - Google Patents

Abstract

A metal damper belongs to the technical field of civil engineering structure damping. The damper is composed of an upper cover plate, a lower cover plate and a core metal energy consumption element. The core metal energy consumption element is a continuous U-shaped grooving metal plate and composed of an arc section and two flat sections. A plurality of continuous grooves are formed in the arc section and a part of the flat sections of the grooving metal plate in the width direction at intervals. The metal damper utilizes a metal material with good plastic deformation capability to achieve energy consumption, utilizes bending deformation to achieve large vertical deformation and provides high lateral deformation capability and anti-fatigue performance.

Description

A kind of metal damper

Technical field

The utility model belongs to civil engineering structure cushion technique field, is specifically related to be arranged in a kind of bridge engineering member between bridge pier and beam slab or the metal damper in building structure.

Background technology

The development of current building more and more trends towards tall and bigization, and the frame construction being comprised of steel member, combined member or reinforced concrete member is frequent adopted form of structure in building.For making building structure there is the ability of the outside destroy such as stronger opposing earthquake or wind load, often need in frame construction, set up metal mold dissipative member.And the development of bridge engineering also more and more trends towards maximizing, for guaranteeing the safety of Bridges During Earthquake structure, prevent bridge, now generally rubber vibration insulating pad is set in the junction of bridge pier and beam slab, and between bridge pier and beam slab, is equipped with dissipative member,

Common dissipative member has Viscous fluid damper, MR damper, metal damper etc.Wherein metal damper, because of its durability and better economy, is applied more in engineering.The buckling-restrained energy-dissipation form that mostly generally is steel or combined member of metal current damper, is mainly used in bearing tension or pressure, the ability of bearing shearing force a little less than.But because the modulus of elasticity of steel is larger, the deflection that can realize when steel supports surrender is very little.Therefore, when needs, realize moderate finite deformation amount, while particularly needing to realize larger shear strain, conventionally the size of braced structures can be very large, so that be difficult to processing, transportation and install, even with common iron, cannot realize at all, this has greatly limited applying of this type of metal damper.

In order to address this problem, there is researcher to design a kind of metallic damper, the core metal dissipative member of this damper is a strip metal plate, shape is similar to four 100-metre dash roads.By this damper arrangement, in bridge or building structure, it is consistent that metal sheet length direction and structure are born shearing direction.This damper provides larger along its length shear strain ability.But, the restoring force of the type damper in can only chain of command, and outside opposite, restoring force cannot effectively design.Yet building can be subject to the level left and right of all directions in actual use, and damper also will inevitably be subject to the horizontal force of broad ways.Therefore, theoretical and experimental verification all shows, lateral deformation capacity and the anti-fatigue performance of above-mentioned damper are poor, and easy destruction form outside expecting in actual use, affects design and use.

Summary of the invention

The utility model be for provide a kind of simple in structure, can realize the outer restoring force of face inner face simultaneously and accurately design, deformability good on both direction and the metal damper of anti-fatigue performance are provided, in order to solve metal energy-dissipation damper in prior art, can only carry out the drawback of design, unidirectional layout and lateral stability deficiency in face.

Design scheme of the present utility model is: this damper is comprised of the upper cover plate, lower cover and the core metal dissipative cell that are fixed in building structure; Described core metal dissipative cell is a continuous U-shaped slotted metal plate, one section of arc section and two sections of flat segments, consists of; Broad ways in the arc section of slotted metal plate and part flat segments is equidistantly offered some succeeding vats; The unslotted of slotted metal plate flat segments partly arranges screw, by bolt, is fixedly connected with upper and lower cover plates; Upper and lower cover plates one end is offered through hole and is fixedly connected with building structure with slotted metal plate simultaneously, and the bolt hole that the other end is offered is only fixedly connected with building structure.

Described lower cover or upper cover plate are connected with building structure by an auxiliary stand; Or upper and lower cover plates is all connected with building structure by auxiliary stand.

Described auxiliary stand is the otic placode with installing hole.

The utlity model has following advantage:

1) designability is strong.The utility model can accurately design respectively with the outer restoring force of face in opposite, has solved this type of damper lateral stability poor, the drawback that anti-fatigue ability is weak.By changing slotted metal plate length, width, thickness, the quantity of fluting, length and width, can realize in a big way in the yield force of variation arbitrarily, and yield displacement can meet the needs of each class formation.

2) can realize moderate finite deformation amount.In the utility model, utilize the slotted metal plate of realizing energy dissipation capacity by bending as dissipative cell, when upper and lower two ends are subject to shearing action, the flexural deformation that utilizes slotted metal plate to produce obtains larger deflection in limited height.

3) provide deformability and the anti-fatigue ability that side direction is stronger, make this damper in use not be prone to week fatigue failure at the bottom of side direction.

Evidence, the utility model utilizes the good plastic deformation abilities such as steel to realize power consumption, and utilize its flexural deformation to realize larger deflection, its novel and reasonable structure, be easy to processing, easy to use and flexible, applicability is strong, the anti-seismic performance that can effectively improve building and bridge construction, has wide marketing and application prospect.

Accompanying drawing explanation

Fig. 1 is the front view of the utility model metal damper.

Fig. 2 is the rear elevation of Fig. 1.

Fig. 3 is the lateral view of Fig. 1.

Fig. 4 is one of schematic diagram of slotted metal plate.

Fig. 5 be slotted metal plate schematic diagram two.

Fig. 6 is the schematic diagram of upper (lower) cover plate.

Fig. 7 is one of work schematic diagram of metal damper.

Fig. 8 be metal damper work schematic diagram two.

Fig. 9 is one of metal damper application schematic diagram in framework.

Figure 10 is two of the application schematic diagram of metal damper in framework

Figure 11 is the application schematic diagram of metal damper on bridge.

Figure 12 is that the C of Figure 11 is to sectional drawing.

Figure 13 is two of the application schematic diagram of shaped grooved U word metal damper on bridge.

Figure 14 is that the C of Figure 13 is to sectional drawing.

Number in the figure:

1-slotted metal plate; 2-upper cover plate; 3-lower cover; 4-bolt hole; 5-through hole; 6-arc section; 7-flat segments.

The specific embodiment

The utility model provides a kind of metal damper, below in conjunction with the drawings and specific embodiments, the utility model is described further.

Embodiment mono-

Metal damper as shown in Figure 1, Figure 2, Figure 3 shows, comprises core metal dissipative cell, upper cover plate 2 and lower cover 3, and described core metal dissipative cell is that continuous passing through rolls and realizes diastrophic U-shaped slotted metal plate 1.

As shown in Figure 4 and Figure 5, slotted metal plate 1 is comprised of arc section 6 and flat segments 7, and a part of broad ways in arc section 6 and flat segments 7 is equidistantly slotted continuously; The unslotted of flat segments 7 partly arranges bolt hole; As shown in Figure 6, the through hole 5 of offering of upper and lower cover plates one end is fixedly connected with building structure with slotted metal plate 1 simultaneously, and the bolt hole 4 that the other end is offered is only fixedly connected with building structure.

During installation, the direction that shearing force is born in the fluting direction of slotted metal plate 1 and building structure is perpendicular.Fig. 7 has demonstrated the deformation pattern of this damper under horizontal force action, and flexural deformation concentrates on right-hand member and the bending section 6. of flat segments 7

Fig. 8 has demonstrated the arrangement of this damper in frame construction, and described upper cover plate 2 is fixed with Vierendeel girder, and lower cover 3 is connected with building structure by an auxiliary stand.Certainly, also can by an auxiliary stand, be connected with building structure by upper cover plate 2, lower cover 3 is fixed on structure base slab; Or upper and lower cover plates is all connected with building structure by auxiliary stand.

Because the utility model metal damper can be realized larger deflection, what therefore overall dimensions of the present utility model can be controlled is very little.Can arrange according to actual needs a plurality of, to reach designing requirement.

During concrete installation, relate to the size of metal damper, have four main technical datas, be respectively damper height H, the thickness t of slotted metal plate, the flat segments length l of slotted metal plate, damper width b.Above four parameters obtain by following method:

(a) according to installing space, determine damper height H;

(b) bring required interior restoring force and the outer restoring force of face into restoring force design formula, obtain the thickness t of slotted metal plate, the flat segments length l of slotted metal plate, two groups of relational expressions of damper width b:

Restoring force formula in face: $F_u=(f_y+(f_u-f_y)(1-e^{-\mathrm{\λt}/H}))\frac{t^{2}b}{2H};$

The outer restoring force formula of face: $F=(0.262\frac{t}{b}+0.461)\frac{f_u{\mathrm{tb}}^2\mathrm{<figure-callout\; id="2"\; label="D\; D"\; filenames="HDA00003622225300021.png,HDA00003622225300032.png"\; state="\{\{state\}\}">D</figure-callout>}}{D^{}};$

F wherein _y, f _u, λ is respectively yield strength, ultimate strength and the material hardening parameter of steel, D is the outer deflection of largest face;

(c) relational expression obtaining based on step (b), comprehensive stability optimization method obtain the concrete numerical value of t, l, b, make damper that failure mode beyong contemplation not occur, wherein R represents the radius of the arc section part of slotted metal plate;

(d) according to material property, level of processing and design requirement, determine damper quantity and bolt size.

Because the utility model metal damper is to utilize the distortion of member to obtain larger flexural deformation in limited height; rather than directly utilize the tension and compression yield deformation of steel to obtain deflection; therefore can realize larger deflection, the more multipotency that dissipates, is more conducive to the protection of frame construction.

In actual applications, also can the utility model is directly soldered on steel frame or utilize securing member directly fixing.In addition, for convenient, be connected with other structures, on upper and lower cover plate, except being provided for described in this example the through hole of connection, also can be provided with other structures for connecting such as otic placode, snap close, suspension ring of connecting hole.

In addition, this example only be take steel frame and is described as example, and in actual applications, the frame construction that also can form for combined member or reinforced concrete member, also can realize the effect of energy-dissipating and shock-absorbing well.In addition, the utility model can also be for places such as bridge, floor gaps, for example, between the body of a bridge and bridge pier, and use in parallel with body of a bridge bearing, be all the know-why of flexural deformation based on slotted metal plate and plastic bending deformation power consumption, at this, do not illustrate one by one.

Embodiment bis-

As shown in Figure 9 and Figure 10, this example is similar with embodiment mono-, and different is that in this example, metal damper arranged direction is vertical with example one.

In fact, each of metal damper,, can require to install arbitrarily according to various architectural constructions when stable to performance homogeneous phase in actual installation, and installation direction can flexible design.

Embodiment tri-

While being used for the energy-dissipating and shock-absorbing of bridge construction, as shown in Figure 11, Figure 12, metal damper of the present utility model is placed between the body of a bridge and bridge pier, use in parallel with body of a bridge bearing, utilize the screwed hole arranging on the upper cover plate 2 of the utility model metal damper and lower cover 3, with securing member (routine techniques method, does not specifically illustrate in figure), the utility model is connected with the body of a bridge and bridge pier respectively.During connection, the fluting direction of metal sheet can be parallel or vertical with the length direction of the body of a bridge, Figure 11 has drawn the fluting direction of slotted metal plate scheme of installation when parallel with body of a bridge length direction with Figure 12, Figure 13 has drawn wide scheme of installation when vertical with body of a bridge length direction of the fluting direction of slotted metal plate with Figure 14.

In this example, upper and lower cover plate of the present utility model is directly connected with the body of a bridge and bridge pier; in actual applications; also can the utility model and the body of a bridge and bridge pier be linked together by auxiliary frame structure; certainly; arrangement form of the present utility model and usage quantity are also not limited to this example; can be in optimized selection according to engineering is actual; also can serve the same role; at this, do not do one by one independent explanation; as long as based on know-why of the present utility model, all in protection category of the present utility model.

Claims (2)

1. a metal damper, is characterized in that, this damper is comprised of the upper cover plate, lower cover and the core metal dissipative cell that are fixed in building structure; Described core metal dissipative cell is a continuous U-shaped slotted metal plate, one section of arc section and two sections of flat segments, consists of; Broad ways in the arc section of slotted metal plate and part flat segments is equidistantly offered some succeeding vats; The unslotted of slotted metal plate flat segments partly arranges screw, by bolt, is fixedly connected with upper and lower cover plates; Upper and lower cover plates one end is offered through hole and is fixedly connected with building structure with slotted metal plate simultaneously, and the bolt hole that the other end is offered is only fixedly connected with building structure.

2. a kind of metal damper according to claim 1, is characterized in that, described lower cover or upper cover plate are connected with building structure by an auxiliary stand; Or upper and lower cover plates is all connected with building structure by auxiliary stand.

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