CN102926478A - U-bar isolation anti-buckling energy dissipation support - Google Patents

Abstract

The invention discloses a channel steel isolation anti-buckling energy dissipation support. It includes constraining steel pipes, energy-dissipating I-steels and isolated channel steels. Both ends of the constraining steel pipes are equipped with energy-dissipating I-beams; There are side isolation channel steels on both sides of the web plate of the steel; an outer isolation channel steel is provided outside the flange of the energy-dissipating I-beam at this end; the other end of the energy-dissipating I-beam is located Reinforcing steel plates are fixedly connected to both sides of the web of the I-beam; end plates are provided at both ends of the constrained steel pipe; inner-fill constrained concrete is poured between the inner side of the end plate and the constrained steel pipe. Because the invention adopts an effective isolation method, the damage of the restrained concrete is avoided, and the energy consumption capacity is significantly improved. It has the advantages of strong energy dissipation capacity, simple processing, and convenient installation. It can make the structure have good seismic performance, ductility and hysteretic energy dissipation capacity, and minimize the seismic response of the building structure.

Description

Channel steel isolation anti-buckling energy-dissipating brace

technical field

The invention relates to an energy-dissipating support of a building structure, in particular to a channel-steel isolated anti-buckling energy-dissipating support for building structure vibration control. belongs to the field of structural engineering.

Background technique

Earthquake disasters are sudden and devastating, which seriously threaten the safety of human life and property. Nearly a thousand destructive earthquakes occur every year in the world, and a major earthquake can cause hundreds of billions of dollars in economic losses, resulting in hundreds of thousands of deaths or serious injuries. my country is located in the two most active seismic belts in the world, and is one of the countries that suffered the most serious earthquake disasters. The casualties caused by the earthquake rank first in the world, and the economic loss is also very huge. The massive destruction and collapse of buildings in earthquakes is the direct cause of earthquake disasters. When an earthquake occurs, ground vibrations cause the seismic response of the structure. For a building structure whose foundation is fixed to the ground, its response is amplified layer by layer along the height from bottom to top. Due to the seismic response of a certain part of the structure, the acceleration, velocity or displacement is too large, the main load-bearing structure is seriously damaged or even collapsed; or although the main structure is not damaged, the building decoration, decoration or other non-structural accessories are damaged, resulting in serious losses. ; or damage to indoor expensive instruments and equipment leads to serious losses or secondary disasters. In order to avoid the occurrence of the above-mentioned disasters, people must control the seismic response of the structural system and eliminate the "amplifier" effect of the structural system.

Structural energy dissipation and vibration reduction technology is to design some non-load-bearing components of the structure, such as supports, shear walls, connectors, etc. Install energy dissipation devices. When there is a small wind or a small earthquake, these energy-dissipating rods or energy-dissipating devices and the structure itself have sufficient lateral stiffness to meet the requirements of use, and the structure is in an elastic state; when there is a large earthquake or strong wind, with the lateral deformation of the structure As the energy dissipation increases, the energy dissipation components or energy dissipation devices start to work first, resulting in greater damping, consuming a large amount of earthquake or wind vibration energy input into the structure, and converting the kinetic energy or elastic potential energy of the structure into thermal energy and dissipating it quickly. Attenuate the earthquake or wind vibration response, displacement, velocity, acceleration, etc. of the structure, so that the main structure can avoid the obvious inelastic state, and protect the main structure and components from damage in strong earthquakes or strong winds. Because the external energy transmitted to the building structure due to earthquakes and other reasons is the root cause of the structure's vibration, so installing energy-consuming devices in the structure to increase energy consumption will reduce the vibration response of the structure. Various energy-dissipating supports can be formed by using energy-dissipating components in supports, such as cross supports, diagonal supports, K-shaped supports, etc.

The anti-buckling energy-dissipating support currently researched and developed has Chinese Patent No. 200710062637.3, which discloses an invention patent named "Steel Tube Anti-Buckling Energy-Dissipating Support"; ; Chinese Patent No. 200910081817.5 discloses an invention patent titled "An all-steel structure anti-buckling energy-dissipating support"; Invention patents, etc. However, the restrained concrete of some anti-buckling energy-dissipating braces is easily crushed and loses its restraint and anti-buckling functions, resulting in a significant reduction in its energy dissipation capacity. Therefore, some energy-dissipating support manufacturing processes, energy-dissipating performance, etc. still need to be further improved.

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Contents of the invention

Aiming at the above-mentioned technical problems, the present invention provides a method with reasonable structure, low cost and effective isolation to avoid damage to the restrained concrete and improve its energy consumption capacity. The energy dissipation effect of the channel steel isolated buckling-resistant energy-dissipating brace can reduce the seismic response of the building structure, and the channel-steel isolated buckling-resistant energy-dissipating brace plays a good role in protecting the building structure.

In order to achieve the above object, the technical solution of the present invention to solve technical problems is:

The energy-dissipating brace isolated from buckling by channel steel includes: constraining steel pipes, energy-dissipating I-beams and isolated channel steels, energy-dissipating I-beams are provided at both ends of the constraining steel pipes; one end of the energy-dissipating I-beams is set In the steel pipe, side isolation channel steel is provided on both sides of the web of the energy-dissipating I-beam at this end; outer isolation channel steel is provided on the outer side of the flange of the energy-dissipating I-beam at this end; the other end of the energy-dissipating I-beam Located outside the constrained steel pipe, the two sides of the web of the energy-dissipating I-beam at this end are fixedly connected with reinforced steel plates; both ends of the constrained steel pipe are provided with end plates; the inner side of the end plate and the constrained steel pipe are poured Fill with confined concrete.

The constrained steel pipe is one of round steel pipe or square steel pipe.

The reinforced steel plate is provided with bolt holes; it is connected with the beam and column components by bolts.

The side isolation channel steel and the outer isolation channel steel are in contact with each other to form a closed I-shaped space, and the distance between the side isolation channel steel, the outer isolation channel steel and the energy-dissipating I-steel is 5-20mm.

Compared with the prior art, the present invention has the following advantages and effects:

Because the invention adopts an effective isolation method, the damage of the restrained concrete is avoided, and the energy consumption capacity is significantly improved. It has the advantages of strong energy dissipation capacity, simple processing, and convenient installation. It can make the structure have good seismic performance, ductility and hysteretic energy dissipation capacity, and make full use of the energy dissipation effect of the channel steel isolation buckling energy dissipation support to maximize Reduce the seismic response of building structures.

Description of drawings

Fig. 1 is the structural representation of channel steel isolation anti-buckling energy dissipation support of the present invention;

Fig. 2 is a schematic diagram of A-A enlarged cross-sectional structure of an embodiment of Fig. 1 of the present invention;

Fig. 3 is a schematic diagram of A-A enlarged cross-sectional structure of another embodiment of Fig. 1 of the present invention;

Fig. 4 is an enlarged left view structural schematic diagram of an embodiment of Fig. 1 of the present invention;

Fig. 5 is an enlarged left view structural diagram of another embodiment of Fig. 1 of the present invention.

Parts in the picture: restraining steel pipe 1, energy-dissipating I-beam 2, reinforced steel plate 3, bolt hole 4, side isolation channel steel 5, outer isolation channel steel 6, inner filling restraint concrete 7, and end plate 8.

Detailed ways

The present invention will be further described in detail below in conjunction with specific examples, but the protection scope of the present invention is not limited by the specific examples, and the claims shall prevail. In addition, on the premise of not violating the technical solution of the present invention, any modification or change made to the present invention that can be easily realized by those skilled in the art will fall within the scope of the claims of the present invention.

Example 1:

The channel steel isolation anti-buckling energy dissipation support of the present invention as shown in Figures 1, 2, and 4 includes: constrained round steel pipe 1, energy-dissipating I-beam 2 and isolated channel steel, and both ends of the restrained round steel pipe 1 are equipped with energy I-beam 2; one end of the energy-dissipating I-beam 2 is set in the constrained circular steel pipe 1, and side isolation channel steel 5 is provided on both sides of the web of the energy-dissipating I-beam at this end; the energy-dissipating I-beam at this end An outer isolation channel steel 6 is provided on the outer side of the steel flange; the other end of the energy-dissipating I-beam 2 is located outside the constrained round steel pipe 1, and both sides of the web of the energy-dissipating I-beam 2 are fixedly connected with reinforcing steel plates 3. Both ends of the constrained round steel pipe 1 are provided with end plates 8 ; inner fill constrained concrete 7 is poured between the inner side of the end plate 8 and the constrained round steel pipe 1 . Bolt holes 4 are set on the reinforced steel plate 3; bolts are used to connect with the beam and column members. The side isolation channel steel 5 and the outer isolation channel steel 6 are in contact with each other to form a closed I-shaped space, and the distance between the side isolation channel steel 5 and the outer isolation channel steel 6 and the energy-dissipating I-steel 2 is 5-20mm .

Example 2:

The channel steel isolation anti-buckling energy dissipation support of the present invention as shown in Figure 1, 3, 5, comprises: constraint square steel pipe 1, energy consumption I-beam 2 and isolation channel steel, both ends of constraint square steel pipe 1 are provided with energy dissipation I-beam 2; one end of the energy-dissipating I-beam 2 is set in the restraining square steel pipe 1, and side isolation channel steel 5 is provided on both sides of the web plate of the energy-dissipating I-beam at this end; the energy-dissipating I-beam at this end Outer isolation channel steel 6 is provided on the outer side of the steel flange; the other end of the energy-dissipating I-beam 2 is located outside the restraining square steel pipe 1, and both sides of the web of the energy-dissipating I-beam 2 are fixedly connected with reinforcing steel plates 3. An end plate 8 is provided at both ends of the constrained square steel pipe 1 ; and a restraint concrete 7 is poured between the inner side of the end plate 8 and the constrained square steel pipe 1 . Bolt holes 4 are set on the reinforced steel plate 3; bolts are used to connect with the beam and column members. The side isolation channel steel 5 and the outer isolation channel steel 6 are in contact with each other to form a closed I-shaped space, and the distance between the side isolation channel steel 5, the outer isolation channel steel 6 and the energy-dissipating I-beam 2 is 5-20mm .

Claims (4)

1. channel-section steel isolation buckling-restrained energy-dissipation comprises: retrain steel pipe (1), power consumption i iron (2) and isolation channel-section steel, it is characterized in that: retrain steel pipe (1) two ends and be equipped with power consumption i iron (2); One end of described power consumption i iron (2) is located in the constraint steel pipe (1), and the web both sides of this end power consumption i iron are provided with side isolation channel-section steel (5); This outside, end power consumption i iron edge of a wing is provided with outer isolation channel-section steel (6); The other end of described power consumption i iron (2) is positioned at outside the constraint steel pipe (1), and the web both sides of this end power consumption i iron (2) are fixed with strengthens steel plate (3); Described constraint steel pipe (1) two ends are equipped with end plate (8); Fill out confined concrete (7) in building between described end plate (8) inboard and the constraint steel pipe (1).

2. channel-section steel isolation buckling-restrained energy-dissipation according to claim 1 is characterized in that described constraint steel pipe (1) is one of constraint round steel pipe or constraint square steel pipe.

3. channel-section steel isolation buckling-restrained energy-dissipation according to claim 1 and 2 is characterized in that arranging on the described reinforcement steel plate (3) bolt hole (4); With bolts with the beam column member.

4. channel-section steel according to claim 1 and 2 is isolated buckling-restrained energy-dissipation, it is characterized in that described side isolation channel-section steel (5) and outer isolation channel-section steel (6) are in contact with one another, form the I-shaped space of a sealing, and the spacing of side isolation channel-section steel (5) and outer isolation channel-section steel (6) and power consumption i iron (2) is 5 ~ 20mm.

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