CN210238934U - Shear type steel truss coupling beam with friction damper and capable of being quickly recovered after earthquake - Google Patents
Shear type steel truss coupling beam with friction damper and capable of being quickly recovered after earthquake Download PDFInfo
- Publication number
- CN210238934U CN210238934U CN201920934094.8U CN201920934094U CN210238934U CN 210238934 U CN210238934 U CN 210238934U CN 201920934094 U CN201920934094 U CN 201920934094U CN 210238934 U CN210238934 U CN 210238934U
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- friction
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- web member
- earthquake
- friction damper
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 47
- 239000010959 steel Substances 0.000 title claims abstract description 47
- 230000008878 coupling Effects 0.000 title claims description 15
- 238000010168 coupling process Methods 0.000 title claims description 15
- 238000005859 coupling reaction Methods 0.000 title claims description 15
- 238000003466 welding Methods 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 229910001369 Brass Inorganic materials 0.000 claims description 4
- 239000010951 brass Substances 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims 4
- 238000010008 shearing Methods 0.000 abstract description 6
- 238000007689 inspection Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 230000008439 repair process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000002783 friction material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Dampers (AREA)
Abstract
The utility model provides a take friction damper's even roof beam of shearing type steel truss that resumes fast after shake, including chord member, diagonal web member and friction damper. The utility model discloses utilize friction damper power consumption on the basis of ordinary steel truss even roof beam, friction damper includes: the friction main plate, the friction plate, the cover plate and the friction type bolt are arranged on the friction main plate; simple structure and convenient construction. Under a small earthquake, the shear type steel truss connecting beam with the friction damper does not slide, is equivalent to a common steel truss connecting beam, and provides lateral rigidity for the structure; under the condition of middle earthquake, after the skidding load is reached, the friction damper slips, so that the friction energy is consumed, and most of the energy of the earthquake is consumed by the friction damper. The utility model discloses take friction damper's the even roof beam of shearing shaped steel truss that resumes fast after the shake under the earthquake effect, intensity does not take place the degradation, and does not take place to destroy, only needs the friction disc of inspection, change friction damper after the shake, has the advantage that the low, in time use of restoration expense after the shake.
Description
Technical Field
The utility model belongs to the technical field of civil engineering energy dissipation shock attenuation, concretely relates to take friction damper's shearing shaped steel truss even roof beam that resumes after shake fast.
Background
The connecting beam is an important anti-seismic energy dissipation component in a shear wall system and a frame-shear wall system, and effectively resists overturning moment by ensuring the transmission of force between adjacent wall limbs. The reinforced concrete coupling beam is fundamentally restricted in performance due to material factors, so that the steel structure coupling beam with excellent energy consumption and ductility performance is proposed in recent years. On the basis, the steel truss connecting beam not only has various advantages of the steel connecting beam, but also has the advantages of steel saving, flexible rod piece arrangement, convenience in replacement and the like. When the span height of the steel truss connecting beam is smaller, the steel truss connecting beam mainly takes shearing deformation as a main part, and the diagonal web members are repeatedly pulled and pressed to deform under the action of an earthquake and enter plasticity before the chords. The steel truss connecting beam mainly dissipates seismic energy through plastic deformation and plays a role in reducing the seismic energy to a certain extent; however, since these deformations are all irreversible, the repair after an earthquake is difficult. The reduction of seismic effects in a host structure by the introduction of energy dissipaters in the structure has proven to be an effective approach. The friction damper has the advantages of simple and reasonable friction mechanism, good energy consumption, less influence from external objective conditions, convenient manufacture, simple and easily obtained materials, and convenient popularization, thereby having good development prospect.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a take friction damper's the shearing type steel truss even roof beam that resumes fast after shake, friction damper is located the great oblique web member department of deformation.
The technical scheme of the utility model:
a shear type steel truss coupling beam with a friction damper and capable of being quickly restored after an earthquake mainly comprises a chord member 1, an inclined web member and the friction damper.
The diagonal web members comprise a diagonal web member A2 and a diagonal web member B7, and the friction damper connects the diagonal web member A2 and the diagonal web member B7 into one diagonal web member; the two oblique web members are fixed between the two chords 1 in a crossed manner, and the two chords 1 are kept parallel; the upper ends of the two diagonal web members A2 are respectively fixed on the upper chord 1, and the lower ends of the two diagonal web members B7 are respectively fixed on the lower chord 1;
the friction damper comprises a friction main plate 3, a friction plate 6, a cover plate 4 and a friction type bolt 5; the surface of a web plate at the lower part of the diagonal web member A2 is sequentially provided with a cover plate 4, a friction plate 6, a friction main plate 3 and the friction plate 6 from outside to inside; the upper part of the friction main plate 3 is provided with a long slotted hole to realize sliding, and the axial direction of the long slotted hole is consistent with the length direction of the diagonal web member A2; the diagonal web member A2, the friction plate 6 and the cover plate 4 are all provided with the same circular bolt holes, and the positions of the circular bolt holes correspond to the positions of the long slotted holes on the friction main plate 3; gaps are reserved among the diagonal web member A2, the friction plate 6, the friction main plate 3 and the cover plate 4, and the friction main plate and the friction plate are matched and fixed with nuts into a whole through friction type bolts 5; the lower part of the friction main plate 3 is fixed on the web plate of the upper part of the diagonal web member B7, thereby connecting the diagonal web member A2 and the diagonal web member B7 into a whole and ensuring a gap between the two.
Furthermore, the inclined web member a2, the friction plate 6 and the circular bolt holes on the cover plate 4 all correspond to the central position of the long slotted hole on the friction main plate 3, so as to ensure that the positive and negative sliding displacement of the friction main plate 3 is equal when the friction main plate slides relative to the inclined web member; the clearance between the diagonal web member A2 and the diagonal web member B7 is larger than the displacement of the friction main plate 3 in sliding.
Further, the friction main plate 3 and the diagonal web member B7 are fixed by welding or bolting; the upper chord member 1 and the diagonal web member A2 are fixed by welding; the lower chord 1 and the diagonal web member B7 are fixed by welding.
Further, disc springs 8 are arranged below the friction type bolts 5 and the nuts and used for preventing the friction type bolts 5 from loosening and deforming in the sliding process of the friction main board 3.
Further, the chord member 1 is T-shaped steel; the diagonal web member A2 is a channel steel, an H-shaped square steel or an I-shaped steel; the friction plate 6 is made of brass friction plate, brake block and other friction materials.
The utility model has the advantages that:
(1) the staged operation is realized by adjusting the sliding load. Under a small earthquake, the friction damper does not slide, so that the lateral rigidity is provided for the structure; under the condition of moderate earthquake, the friction damper slips, so that the earthquake energy is consumed by friction.
(2) After earthquake, the repairability can be quickly realized and the safety of the main structure can be protected. After the earthquake, only the friction material of the friction damper needs to be detached for inspection and replacement, and the device has the advantages of low repair cost after the earthquake and timely use.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
FIG. 3 is a longitudinal cross-sectional view of the position of the friction damper of FIG. 1.
FIG. 4 is a radial cross-sectional view of the position of the friction damper of FIG. 1.
Fig. 5 is a hysteresis curve of the shear type steel truss coupling beam with the friction damper of the present invention.
In the figure: 1, a chord member; 2, a diagonal web member A; 3, rubbing the main board; 4, covering a plate; 5 friction type bolts; 6 friction plate; 7, a diagonal web member B; 8 disc springs.
Detailed Description
The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.
The utility model relates to a take friction damper's even roof beam of shearing type steel truss that resumes fast after shake, including friction damper, chord member 1 and oblique web member.
As shown in fig. 1, the diagonal web members include a diagonal web member a2 and a diagonal web member B7, and the friction damper connects the diagonal web member a2 and the diagonal web member B7 into one diagonal web member; the two oblique web members are fixed between the two chords 1 in a crossed manner, and the two chords 1 are kept parallel; the upper ends of the two diagonal web members a2 are welded to the upper chord 1, and the lower ends of the two diagonal web members B7 are welded to the lower chord 1.
The friction damper is arranged at a web plate at the lower part of the diagonal web member A2 and comprises a friction main plate 3, a friction plate 6, a cover plate 4 and a friction type bolt 5; the surface of a web plate at the lower part of the diagonal web member A2 is sequentially provided with a cover plate 4, a friction plate 6, a friction main plate 3 and the friction plate 6 from outside to inside; the upper part of the friction main plate 3 is provided with a long slotted hole to realize sliding, and the axial direction of the long slotted hole is consistent with the length direction of the diagonal web member A2; the diagonal web member A2, the friction plate 6 and the cover plate 4 are all provided with the same circular bolt holes, and the positions of the circular bolt holes correspond to the central positions of the long slotted holes on the friction main plate 3; gaps are reserved among the diagonal web member A2, the friction plate 6, the friction main plate 3 and the cover plate 4, and the friction main plate and the friction plate are matched and fixed with nuts into a whole through friction type bolts 5; disc springs 8 are arranged below the friction type bolts 5 and the nuts and used for preventing the friction type bolts 5 from loosening and deforming in the sliding process of the friction main plate 3; the lower part of the friction main plate 3 is welded on a web plate at the upper part of the inclined web member B7, the inclined web member A2 and the inclined web member B7 are connected into a whole, a gap is ensured to be reserved between the inclined web member A2 and the inclined web member B7, and the gap is larger than the displacement of the friction main plate 3 in sliding. Enough space is also provided among the friction main plate 3, the cover plate 4, the friction plate 6 and the diagonal web member A2 to ensure normal sliding work and welding work. Chord member 1 in this embodiment is T shaped steel, and channel-section steel is chooseed for use to oblique web member 2.
In fig. 1, the friction plate 6 is arranged on a web plate at the lower part of the diagonal web member a2, and the normal working sliding friction of the friction damper can be ensured; the friction plate 6 is used in the non-friction area to ensure that the distance between the cover plate 4 and the diagonal web member a2 is consistent, otherwise, eccentric bending moment is generated, and the normal operation of the friction damper is influenced.
Fig. 5 is a hysteresis curve of the shear type steel truss coupling beam with the friction damper of the present invention, and the bearing capacity of the shear type steel truss coupling beam with the friction damper is not reduced in the whole process. After the earthquake, only the friction damper needs to be disassembled, and whether the friction plate needs to be replaced or not is checked; in the post-earthquake inspection or repair process, the operation is simple, the period is short, and the device can be used in time.
Claims (8)
1. A shear type steel truss coupling beam with a friction damper and capable of quickly recovering after earthquake is characterized by comprising a chord member (1), an inclined web member and a friction damper;
the friction damper connects the diagonal web member A (2) and the diagonal web member B (7) into one diagonal web member; the two oblique web members are fixed between the two chords (1) in a crossed manner, and the two chords (1) are kept parallel; the upper ends of the two diagonal web members A (2) are respectively fixed on the upper chord member (1), and the lower ends of the two diagonal web members B (7) are respectively fixed on the lower chord member (1);
the friction damper comprises a friction main plate (3), a friction plate (6), a cover plate (4) and a friction type bolt (5); the surface of a web plate at the lower part of the diagonal web member A (2) is sequentially provided with a cover plate (4), a friction plate (6), a friction main plate (3) and the friction plate (6) from outside to inside; the upper part of the friction main plate (3) is provided with a long slotted hole to realize sliding, and the axial direction of the long slotted hole is consistent with the length direction of the diagonal web member A (2); the diagonal web member A (2), the friction plate (6) and the cover plate (4) are all provided with the same circular bolt holes, and the positions of the circular bolt holes correspond to the positions of the long slotted holes on the friction main plate (3); gaps are reserved among the diagonal web member A (2), the friction plate (6), the friction main plate (3) and the cover plate (4), and the friction main plate are matched and fixed with nuts into a whole through friction type bolts (5); the lower part of the friction main plate (3) is fixed on a web plate at the upper part of the inclined web member B (7), so that the inclined web member A (2) and the inclined web member B (7) are connected into a whole, and a gap is ensured between the inclined web member A and the inclined web member B.
2. The shear-type steel truss connecting beam with the friction damper and capable of quickly recovering after earthquake is characterized in that the inclined web member A (2), the friction plate (6) and the circular bolt holes in the cover plate (4) correspond to the central positions of the long slotted holes in the friction main plate (3) so as to ensure that the positive and negative sliding displacement of the friction main plate (3) is equal when the friction main plate slides relative to the inclined web member; and the gap between the inclined web member A (2) and the inclined web member B (7) is larger than the sliding displacement of the friction main plate (3).
3. The shear type steel truss coupling beam with the friction damper for the rapid recovery after earthquake as claimed in claim 1 or 2, wherein the friction main plate (3) and the diagonal web member B (7) are fixed by welding or bolting; the upper chord member (1) and the inclined web member A (2) are fixed by welding; the lower chord member (1) and the inclined web member B (7) are fixed by welding.
4. The shear type steel truss coupling beam with the friction damper capable of rapidly recovering after earthquake according to claim 1 or 2, wherein disc springs (8) are arranged below the friction type bolts (5) and nuts and used for preventing the friction type bolts (5) from loosening and deforming in the sliding process of the friction main plate (3).
5. The shear-type steel truss coupling beam with the friction damper and capable of rapidly recovering after an earthquake according to claim 3, wherein disc springs (8) are arranged below the friction-type bolts (5) and nuts and used for preventing the friction-type bolts (5) from loosening and deforming in the sliding process of the friction main plate (3).
6. The shear type steel truss coupling beam with friction damper for post-earthquake quick recovery as claimed in claim 1, 2 or 5, wherein the chord member (1) is a T-shaped steel; the diagonal web member A (2) is channel steel, H-shaped square steel or I-shaped steel; the friction plate (6) is a brass friction plate or a brake pad.
7. The shear type steel truss coupling beam with friction damper for fast recovery after earthquake as claimed in claim 3, wherein the chord member (1) is T-shaped steel; the diagonal web member A (2) is channel steel, H-shaped square steel or I-shaped steel; the friction plate (6) is a brass friction plate or a brake pad.
8. The shear type steel truss coupling beam with friction damper for fast recovery after earthquake as claimed in claim 4, wherein the chord member (1) is T-shaped steel; the diagonal web member A (2) is channel steel, H-shaped square steel or I-shaped steel; the friction plate (6) is a brass friction plate or a brake pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920934094.8U CN210238934U (en) | 2019-06-20 | 2019-06-20 | Shear type steel truss coupling beam with friction damper and capable of being quickly recovered after earthquake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920934094.8U CN210238934U (en) | 2019-06-20 | 2019-06-20 | Shear type steel truss coupling beam with friction damper and capable of being quickly recovered after earthquake |
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| Publication Number | Publication Date |
|---|---|
| CN210238934U true CN210238934U (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920934094.8U Withdrawn - After Issue CN210238934U (en) | 2019-06-20 | 2019-06-20 | Shear type steel truss coupling beam with friction damper and capable of being quickly recovered after earthquake |
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| Country | Link |
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| CN (1) | CN210238934U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206225A (en) * | 2019-06-20 | 2019-09-06 | 大连理工大学 | The shearing steel truss coupling beam of fast quick-recovery after a kind of shake with frcition damper |
| CN111472262A (en) * | 2020-05-20 | 2020-07-31 | 蚌埠龙淮建筑科技有限公司 | Steel structure bridge truss with buffering characteristic |
-
2019
- 2019-06-20 CN CN201920934094.8U patent/CN210238934U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206225A (en) * | 2019-06-20 | 2019-09-06 | 大连理工大学 | The shearing steel truss coupling beam of fast quick-recovery after a kind of shake with frcition damper |
| CN110206225B (en) * | 2019-06-20 | 2024-10-01 | 大连理工大学 | Shear steel truss connecting beam with friction damper and capable of recovering rapidly after earthquake |
| CN111472262A (en) * | 2020-05-20 | 2020-07-31 | 蚌埠龙淮建筑科技有限公司 | Steel structure bridge truss with buffering characteristic |
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| GR01 | Patent grant | ||
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| AV01 | Patent right actively abandoned | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200403 Effective date of abandoning: 20241001 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200403 Effective date of abandoning: 20241001 |