CN108708474A - Sublevel energy consumption anti-seismic damper - Google Patents

Abstract

The invention belongs to the field of vibration control of building structures, and particularly relates to a stepped energy-dissipating anti-seismic damper, which is surrounded by right-angle energy-dissipating steel plates, external arc-shaped energy-dissipating steel plates, mounting plates, and end energy-dissipating steel plates; Bond the filling material and the internal arc-shaped energy-dissipating steel plate, install a foamed aluminum energy-absorbing plate near the inner side of the energy-dissipating steel plate, set several bundles of internal round holes on the energy-dissipating steel plate, and set energy-dissipating plates between the internal circular holes rib. The present invention adopts the structural design of step-by-step energy consumption in the working stage, that is, when a small earthquake or a moderate earthquake occurs, it can not only consume energy through its own bending deformation, but also rub and extrude with the elastic bonding filling material when the relative displacement occurs, so that the structure Energy such as kinetic energy or elastic potential energy is converted into thermal energy and dissipated. When a large earthquake occurs, the energy dissipation ribs make the energy dissipation of the damper more sufficient; the manufacturing and installation of the stepwise energy dissipation antiseismic damper is simple and the initial stiffness is relatively large. , The yield dispersion area of the material is large and the damping capacity is strong.

Description

Staged Energy Dissipation Anti-seismic Damper

technical field

The invention belongs to the field of vibration control of building structures, in particular to a step-by-step energy consumption anti-seismic damper.

Background technique

Metallic yielding dampers are various forms of damping energy dissipators made of mild steel or other soft metal materials. Metals have good hysteretic properties after yielding, and some metals have elastic-plastic hysteretic deformation energy dissipation, including mild steel dampers, lead dampers, and shape memory alloys (SMA) dampers. The mechanism of its vibration control on the structure is to dissipate part of the energy of the structure vibration through the yield hysteresis energy consumption of the metal, so as to reduce the structural response. The mild steel damper is to make full use of the soft steel after entering the plastic stage Good hysteresis characteristics. In 1972, American scholars such as Kelly and Skinner first began to study the use of this property of mild steel to control the dynamic response of structures, and proposed several forms of mild steel dampers, including torsion beams, bending beams, and U-shaped bar energy dissipators. Wait. Subsequently, other scholars successively proposed many different forms of mild steel dampers, among which the more typical ones are X-shaped, triangular plate mild steel dampers, E-shaped steel dampers, and C-shaped steel dampers. After theoretical analysis and experimental research by many scholars at home and abroad, it is confirmed that the mild steel damper has stable hysteresis characteristics, good low-cycle fatigue performance, long-term reliability and is not affected by the environment and temperature. It is a very good damper. Promising energy consumers, all-metal dampers have the advantages of large recoverable deformation, strong damping capacity, durability, corrosion resistance, fatigue resistance, wide operating temperature range and low maintenance costs.

Contents of the invention

In order to solve the above-mentioned existing technical problems, the present invention provides a step-by-step energy consumption anti-seismic damper, which adopts the structural design of step-by-step energy consumption in the working stage, so that the energy consumption of the damper is more sufficient, and the use of the normal state can increase the size of the building. The overall stiffness of the structure can reduce the seismic response of the building structure during an earthquake.

The technical scheme adopted in the present invention:

A stepwise energy-dissipating anti-seismic damper, including right-angle energy-dissipating steel plates, coordinated connection steel bars, internal arc-shaped energy-dissipating steel plates, external arc-shaped energy-dissipating steel plates, elastic bonded filling materials, foamed aluminum energy-absorbing plates, mounting plates, Screw holes, energy-dissipating steel plates at the end, round holes and energy-dissipating ribs inside;

The structure of the stepped energy-dissipating anti-seismic damper is surrounded by right-angle energy-dissipating steel plates, external arc-shaped energy-dissipating steel plates, mounting plates, and end energy-dissipating steel plates. The angle between the two right-angled energy-dissipating steel plates is 90°. The mounting plate is connected by an external arc-shaped energy-dissipating steel plate at the end of the right-angle energy-dissipating steel plate; a foamed aluminum energy-absorbing plate is arranged on the inner side close to the energy-dissipating steel plate; The structure surrounded by energy plates and installation plates is filled with elastic bonded filling materials, and a number of internal arc-shaped energy-dissipating steel plates are arranged in this structure; the internal arc-shaped energy-dissipating steel plates are arranged at equal intervals, and the internal arc-shaped energy- The bending radius from the middle to both sides gradually decreases, the coordinated connecting steel bar passes through the middle position of the inner arc-shaped energy-dissipating steel plate, and the two ends of the coordinated connecting steel bar are locked and fixed with nuts; Set round holes, the number of round holes in each bundle is equal, and energy dissipation ribs are arranged between the inner round holes of each bundle and between the inner round holes of adjacent bundles, and the end of the mounting plate is close to the outer arc A number of screw holes can be provided at the steel plate.

Further, the right-angle energy-dissipating steel plate, the inner arc-shaped energy-dissipating steel plate, the outer arc-shaped energy-dissipating steel plate and the end energy-dissipating steel plate are made of steel plates with low yield points.

Further, the elastic bonding filling material is made of high damping rubber.

Further, the foamed aluminum energy-absorbing board is made of foamed aluminum.

Further, several screw holes are opened at the end of the mounting plate at equal intervals.

Further, the end energy-dissipating steel plate is an end energy-dissipating steel plate with round holes inside.

Beneficial effects of the present invention:

The beneficial effect of the present invention is that the initial rigidity is relatively large, the yield dispersion area of the material is large, and the damping capacity is strong, and the structural design of energy consumption in stages in the working stage is adopted, that is, when a small earthquake or a moderate earthquake occurs, the right-angle energy-dissipating steel plate and the mounting plate vibrate Drive the internal arc-shaped energy-dissipating steel plate and the external arc-shaped energy-dissipating steel plate to vibrate. They can not only dissipate energy through their own bending deformation, but also rub and extrude with the elastic bonded filling material during relative displacement, so that the kinetic energy or elastic potential energy of the structure It is transformed into heat and dissipated. When a large earthquake occurs, the energy-dissipating steel plate at the end is provided with round holes, and the energy-dissipating ribs formed not only save materials, but also make the energy dissipation of the damper more sufficient. Energy-consuming anti-seismic dampers are simple to manufacture and install, and are convenient to use. They can be used in the anti-seismic design of new construction projects, and can also be used in the reinforcement and maintenance of existing projects. When used in normal conditions, the overall stiffness of the building structure can be increased. When encountering an earthquake, it can reduce the seismic response of the building structure.

Description of drawings

Fig. 1 is a schematic front view of the stepped energy dissipation anti-seismic damper of the present invention.

Fig. 2 is a schematic top view of the stepped energy dissipation anti-seismic damper of the present invention.

Fig. 3 is a schematic side view of the stepped energy dissipation anti-seismic damper of the present invention.

FIG. 4 is a cross-sectional view along line A-A of FIG. 2 .

Fig. 5 is a schematic plan view of the energy-dissipating steel plate at the end.

Fig. 6 is a schematic plan view of a foamed aluminum energy-absorbing board.

In the figure: 1 is a right-angle energy-dissipating steel plate; 2 is a coordinated connection steel bar; 3 is an internal arc-shaped energy-dissipating steel plate; 4 is an external arc-shaped energy-dissipating steel plate; 5 is an elastic bonding filling material; 6 is an energy-absorbing foamed aluminum plate ; 7 is a mounting plate; 8 is a screw hole; 9 is an energy-dissipating steel plate at the end; 10 is a round hole inside; 11 is an energy-dissipating rib.

Detailed ways

In order to further illustrate the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments, but they should not be construed as limiting the protection scope of the present invention.

A stepwise energy-dissipating anti-seismic damper, as shown in Figures 1 to 6, mainly includes a right-angle energy-dissipating steel plate 1, a coordinated connection steel bar 2, an internal arc-shaped energy-dissipating steel plate 3, an external arc-shaped energy-dissipating steel plate 4, elastic viscose Junction filling material 5, foamed aluminum energy-absorbing plate 6, mounting plate 7, screw holes 8, end energy-dissipating steel plates 9, inner circular holes 10 and energy-dissipating ribs 11;

The structure of the step-by-step energy-dissipating anti-seismic damper is surrounded by a right-angle energy-dissipating steel plate 1, an external arc-shaped energy-dissipating steel plate 4, a mounting plate 7, and an end energy-dissipating steel plate 9. The angle is 90°, and the mounting plate 7 is connected by an external arc-shaped energy-dissipating steel plate 4 at the end of the right-angle energy-dissipating steel plate 1; a foamed aluminum energy-absorbing plate 6 is arranged on the inner side close to the energy-dissipating steel plate 9; The structure enclosed by the external arc-shaped energy-dissipating steel plate 4, the foamed aluminum energy-absorbing plate 6 and the installation plate 7 is filled with elastic bonding filler material 5, and a number of internal arc-shaped energy-dissipating steel plates 3 are arranged in this structure, among which the elastic bonding The junction filling material 5 is made of high damping rubber, and the foamed aluminum energy-absorbing plate 6 is made of foamed aluminum; The bending radius of the side gradually decreases, and the coordinated connecting steel bar 2 passes through the middle position of the internal arc-shaped energy-dissipating steel plate 3, and the two ends of the coordinated connecting steel bar 2 are locked and fixed with nuts; further increasing its cooperative energy dissipation capacity, at the end A plurality of bundles of internal circular holes 10 are arranged on the energy-dissipating steel plate 9, and the number of internal circular holes 10 in each bundle is equal, and are provided between the internal circular holes 10 of each bundle and between the internal circular holes 10 of adjacent bundles. The energy dissipation ribs 11 are provided with several screw holes 8 at equal intervals at the end of the mounting plate 7 close to the outer arc-shaped energy dissipation steel plate 4 .

The above is only a preferred embodiment of the present invention, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can be made without departing from the principle of the present invention. It should be regarded as the protection scope of the present invention.

Claims (6)

1. The anti-seismic damper 1. a kind of sublevel consumes energy, including right angle Wasted-energy steel plate (1), coordination connection reinforcing bar (2), internal arc energy consumption Steel plate (3), outer arcuate Wasted-energy steel plate (4), elastic bonding packing material (5), foaming aluminum energy-absorbing plate (6), mounting plate (7), spiral shell Hole (8), end Wasted-energy steel plate (9), it is interior set circular hole (10) and energy consumption rib (11), it is characterised in that：

   The structure of sublevel energy consumption anti-seismic damper, is by right angle Wasted-energy steel plate (1), outer arcuate Wasted-energy steel plate (4), mounting plate (7), end Wasted-energy steel plate (9) surrounds, and the angle between 2 pieces of right angle Wasted-energy steel plates (1) is 90 °, and mounting plate (7) consumes energy at right angle The end of steel plate (1) is connected by outer arcuate Wasted-energy steel plate (4)；Close to the inside of Wasted-energy steel plate (9), foaming aluminum energy-absorbing is being set Plate (6)；At right angle, Wasted-energy steel plate (1), outer arcuate Wasted-energy steel plate (4), foaming aluminum energy-absorbing plate (6) and mounting plate (7) surround Inside configuration fills elastic bonding packing material (5), and several internal arc Wasted-energy steel plates (3) are arranged in this structure；It is internal Arc Wasted-energy steel plate is equally spaced between (3), and bending radius of the internal arc Wasted-energy steel plate (3) from centre to both sides gradually subtracts It is small, coordinate connection reinforcing bar (2) and pass through the maximum medium position of internal arc Wasted-energy steel plate (3) bending radius, and will coordinate to connect Reinforcing bar (2) both ends are fixed with nut check；It is arranged on end Wasted-energy steel plate (9) in several beams and sets circular hole (10), is set in every beam The quantity of circular hole (10) is equal, set in every beam between circular hole (10) and adjacent beam in set energy consumption be set between circular hole (10) Rib (11) opens up several screw holes (8) in the end of mounting plate (7) at outer arcuate Wasted-energy steel plate (4).
2. 2. according to the sublevel energy consumption anti-seismic damper required described in 1, it is characterised in that：Right angle Wasted-energy steel plate (1), internal arc consumption Energy steel plate (3), outer arcuate Wasted-energy steel plate (4) and end Wasted-energy steel plate (9) are made using low yield point steel plate.
3. 3. according to the sublevel energy consumption anti-seismic damper required described in 1, it is characterised in that：Elastic bonding packing material (5) is using high Damping rubber is made.
4. 4. according to the sublevel energy consumption anti-seismic damper required described in 1, it is characterised in that：Foaming aluminum energy-absorbing plate (6) uses foamed aluminium It is made.
5. 5. according to the sublevel energy consumption anti-seismic damper required described in 1, it is characterised in that：It is opened up in the end of mounting plate (7) several Screw hole (8) is equidistant.
6. 6. according to the sublevel energy consumption anti-seismic damper required described in 1, it is characterised in that：End Wasted-energy steel plate (9) is to be set inside it The end Wasted-energy steel plate (9) of circular hole.