Connecting structure of viscous damper between upper-layer steel structure and lower-layer steel structure

Abstract

The utility model discloses a connecting structure of a viscous damper between an upper steel structure and a lower steel structure, which comprises the viscous damper, a first radial spherical plain bearing single-lug plate and a second radial spherical plain bearing single-lug plate, and the upper end of the viscous damper is hinged with the first radial spherical plain bearing single-lug plate through a first pin shaft. The first radial spherical plain bearing single lug plate is fixedly connected with the lower flange of the upper-layer steel beam; the lower end of the viscous damper is hinged to a second radial spherical plain bearing single-lug plate through a second pin shaft, and the second radial spherical plain bearing single-lug plate is fixedly connected with the upper flange of the lower-layer steel beam. By adopting the connecting structure provided by the utility model, the viscous damper can be quickly mounted, and the convenience and economical efficiency of connection are improved. The connecting joint is good in usability and feasibility and high in energy consumption effect, and the anti-seismic structure has the self-adjusting capacity. And meanwhile, the construction quality and reliability can be guaranteed, and the performance characteristics of the viscous damper can be fully exerted based on the principle of a tuned mass damper system.

Description

Technical Field

[0001] The utility model belongs to the technical field of earthquake resistance of buildings, and particularly relates to a connecting structure of a viscous damper between upper and lower steel structures. Background Art

[0002] At present, the buckling-restrained brace form is mostly adopted for earthquake resistance of high-rise and super-high-rise steel frame structure buildings in China. However, the earthquake resistance effect of this form is limited and cannot meet higher earthquake resistance requirements. Therefore, for projects with higher earthquake resistance performance requirements, earthquake resistance is mostly carried out based on the principle of the Lemesurier damping system, and various forms of the tuned mass damper system are derived and applied therefrom.

[0003] The viscous damper plays a key role in this earthquake resistance system and has now been widely used in the fields of building, bridge and equipment vibration isolation, etc. for earthquake resistance and vibration reduction of newly built buildings. The control mechanism of the viscous damper is to consume part of the vibration energy of the structure in the form of heat through the viscous effect of the damping material, so as to relieve the impact of external loads, reduce the vibration of the structure and protect the safety of the structure. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a connecting structure of a viscous damper between upper and lower steel structures, which can realize the rapid installation of the viscous damper and improve the convenience and economy of connection.

[0005] The utility model is realized as follows: A connecting structure of a viscous damper between upper and lower steel structures includes a viscous damper, a first single-ear plate of a radial spherical plain bearing, and a second single-ear plate of a radial spherical plain bearing. The upper end of the viscous damper is hinged to the first single-ear plate of the radial spherical plain bearing through a first pin shaft, and the first single-ear plate of the radial spherical plain bearing is fixedly connected to the lower flange of the upper steel beam; the lower end of the viscous damper is hinged to the second single-ear plate of the radial spherical plain bearing through a second pin shaft, and the second single-ear plate of the radial spherical plain bearing is fixedly connected to the upper flange of the lower steel beam.

[0006] Further, the first single-ear plate of the radial spherical plain bearing has a first flat plate section and a downward-turning section. The downward-turning section is bent downward relative to the first flat plate section, and the length direction of the downward-turning section is parallel to the length direction of the viscous damper; a connection hole for the first pin shaft to pass through is formed in the downward-turning section, and the upper end of the viscous damper is hinged to the downward-turning section through the first pin shaft.

[0007] Further, bolt holes are formed in the first flat plate section, and the first flat plate section is fixedly connected to the lower flange of the upper steel beam through high-strength bolts.

[0008] Further, the joint part between the first flat plate section and the lower flange of the upper steel beam is welded all around with fillet welds, and the weld quality grade is grade three.

[0009] Furthermore, the single lug plate of the second spherical plain bearing has a second flat plate section and an upturned section. The upturned section is bent upward relative to the second flat plate section, and the length direction of the upturned section is parallel to the length direction of the viscous damper. A connection hole for the second pin shaft to pass through is formed in the upturned section, and the lower end of the viscous damper is hinged to the upturned section through the second pin shaft.

[0010] Furthermore, bolt holes are formed in the second flat plate section, and the second flat plate section is fixedly connected to the upper flange of the lower steel beam through high-strength bolts.

[0011] Furthermore, the joint part between the second flat plate section and the upper flange of the lower steel beam is welded all around with fillet welds, and the weld quality grade is grade three.

[0012] Furthermore, corrosion-resistant coatings are provided on the outer surfaces of the single lug plate of the first spherical plain bearing, the single lug plate of the second spherical plain bearing, the first pin shaft, and the second pin shaft.

[0013] Furthermore, both the single lug plate of the first spherical plain bearing and the single lug plate of the second spherical plain bearing are made of Q355B steel with a thickness of 25 mm.

[0014] Furthermore, the high-strength bolts are all 10.9S friction-type M20 twist-off type high-strength bolts.

[0015] In the present utility model, the steel truss as a whole is used as a tuned mass block, and the upper roof panel is connected through a viscous damper to achieve the function of energy dissipation and shock absorption. Compared with the prior art, it has the following beneficial effects:

[0016] By adopting the connection structure provided by the present utility model, the rapid installation of the viscous damper can be realized, and the convenience and economy of the connection can be improved. The usability and feasibility of the connection node are good, the energy dissipation effect is strong, and the seismic structure has self-adjusting ability. At the same time, the quality and reliability of the construction can be guaranteed, and based on the principle of the tuned mass damper system, the performance characteristics of the viscous damper can be fully exerted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a connection structure of a viscous damper between upper and lower steel structures provided in this embodiment;

[0018] Figure 2 is a schematic connection diagram of the viscous damper and the lower flange of the upper steel beam provided in this embodiment;

[0019] Figure 3 is a schematic connection diagram of the viscous damper and the upper flange of the lower steel beam provided in this embodiment;

[0020] Figure 4It is a side view schematic diagram of the single ear plate of the first radial spherical plain bearing provided by this embodiment;

[0021] Figure 5 It is a top view schematic diagram of the single ear plate of the first radial spherical plain bearing provided by this embodiment;

[0022] Figure 6 It is a side view schematic diagram of the single ear plate of the second radial spherical plain bearing provided by this embodiment;

[0023] Figure 7 It is a top view schematic diagram of the single ear plate of the second radial spherical plain bearing provided by this embodiment. Detailed implementation mode

[0024] In order to make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0025] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0026] Please refer to Figure 1 , this embodiment provides a connection structure for a viscous damper between upper and lower steel structures, including a viscous damper 1, a first radial spherical plain bearing single ear plate 2, and a second radial spherical plain bearing single ear plate 3; please refer to Figure 2 , the upper end of the viscous damper 1 is hinged to the first radial spherical plain bearing single ear plate 2 through a first pin shaft 4, and the first radial spherical plain bearing single ear plate 2 is fixedly connected to the lower flange of the upper steel beam 100; please refer to Figure 3 , the lower end of the viscous damper 1 is hinged to the second radial spherical plain bearing single ear plate 3 through a second pin shaft 5, and the second radial spherical plain bearing single ear plate 3 is fixedly connected to the upper flange of the lower steel beam 200.

[0027] Specifically, please refer to Figure 4 and Figure 5 The single-ear plate 2 of the first spherical plain bearing has a first flat plate section 21 and a downwardly turned section 22. The downwardly turned section 22 is bent downward relative to the first flat plate section 21, and the length direction of the downwardly turned section 22 is parallel to the length direction of the viscous damper 1. A connecting hole for the first pin shaft 4 to pass through is provided on the downwardly turned section 22, and the upper end of the viscous damper 1 is hinged to the downwardly turned section 22 through the first pin shaft 4.

[0028] Bolt holes are provided on the first flat plate section 21, and the first flat plate section 21 is fixedly connected to the lower flange of the upper steel beam 100 through high-strength bolts 6. The joint part between the first flat plate section 21 and the lower flange of the upper steel beam 100 is welded all around with fillet welds, and the weld quality grade is grade three.

[0029] Specifically, please refer to Figure 6 and Figure 7 The single-ear plate 3 of the second spherical plain bearing has a second flat plate section 31 and an upwardly turned section 32. The upwardly turned section 32 is bent upward relative to the second flat plate section 31, and the length direction of the upwardly turned section 32 is parallel to the length direction of the viscous damper 1. A connecting hole for the second pin shaft 5 to pass through is provided on the upwardly turned section 32, and the lower end of the viscous damper 1 is hinged to the upwardly turned section 32 through the second pin shaft 5.

[0030] Bolt holes are provided on the second flat plate section 31, and the second flat plate section 31 is fixedly connected to the upper flange of the lower steel beam 200 through high-strength bolts 6. The joint part between the second flat plate section 31 and the upper flange of the lower steel beam 200 is welded all around with fillet welds, and the weld quality grade is grade three.

[0031] Preferably, corrosion-resistant coatings are provided on the outer surfaces of the single-ear plate 2 of the first spherical plain bearing, the single-ear plate 3 of the second spherical plain bearing, the first pin shaft 4, and the second pin shaft 5. The single-ear plate 2 of the first spherical plain bearing and the single-ear plate 3 of the second spherical plain bearing are both made of Q355B steel with a thickness of 25 mm. The above high-strength bolts 6 are all 10.9S friction-type M20 torsion-shear high-strength bolts.

[0032] To better elaborate the technical solutions and technical effects of this embodiment, a specific implementation case is listed below for illustration:

[0033] A total of 8 viscous dampers are installed between the roof truss structure (truss beam surface elevation 28.250 m) and the roof steel beam (plate surface elevation 28.900 m) as the seismic connection between the roof slab and the steel truss.

[0034] Overall installation sequence: The roof steel truss and the roof king-post beam components are transported to the site. First, the ear plates are pre-assembled on the ground (including the installation of high-strength bolts and the fillet welding of the ear plates to the steel beam flange), and then the roof steel truss is hoisted and installed, the seismic isolation rubber bearings are hoisted, the roof king-post beam is hoisted, and finally the viscous damper is hoisted, and the pin shaft between the ear plate and the viscous damper is installed.

[0035] In summary, by adopting the connection structure provided in this embodiment, the rapid installation of the viscous damper can be realized, and the convenience and economy of the connection can be improved. The usability and feasibility of this connection node are good, the energy dissipation effect is strong, and the seismic structure has self-adjusting ability. At the same time, the construction quality and reliability can be guaranteed. Based on the principle of the tuned mass damper system, the performance characteristics of the viscous damper can be fully exerted.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A connecting structure for a viscous damper between upper and lower steel structures, characterized in that It includes a viscous damper, a first single-ear centripetal spherical plain bearing, and a second single-ear centripetal spherical plain bearing. The upper end of the viscous damper is hinged to the first single-ear centripetal spherical plain bearing through a first pin shaft, and the first single-ear centripetal spherical plain bearing is fixedly connected to the lower flange of the upper steel beam; the lower end of the viscous damper is hinged to the second single-ear centripetal spherical plain bearing through a second pin shaft, and the second single-ear centripetal spherical plain bearing is fixedly connected to the upper flange of the lower steel beam.

2. The connection structure according to claim 1, wherein The first single-ear centripetal spherical plain bearing has a first flat plate section and a downwardly turned section. The downwardly turned section is bent downward relative to the first flat plate section, and the length direction of the downwardly turned section is parallel to the length direction of the viscous damper; a connection hole for the first pin shaft to pass through is provided on the downwardly turned section, and the upper end of the viscous damper is hinged to the downwardly turned section through the first pin shaft.

3. The connection structure according to claim 2, characterized in that Bolt holes are provided on the first flat plate section, and the first flat plate section is fixedly connected to the lower flange of the upper steel beam through high-strength bolts.

4. The connection structure according to claim 3, characterized in that The joint part between the first flat plate section and the lower flange of the upper steel beam is welded all around with fillet welds, and the weld quality grade is grade three.

5. The connection structure according to claim 1, characterized in that, The second single-ear centripetal spherical plain bearing has a second flat plate section and an upwardly turned section. The upwardly turned section is bent upward relative to the second flat plate section, and the length direction of the upwardly turned section is parallel to the length direction of the viscous damper; a connection hole for the second pin shaft to pass through is provided on the upwardly turned section, and the lower end of the viscous damper is hinged to the upwardly turned section through the second pin shaft.

6. The connection structure according to claim 5, characterized in that, Bolt holes are provided on the second flat plate section, and the second flat plate section is fixedly connected to the upper flange of the lower steel beam through high-strength bolts.

7. The connection structure according to claim 6, characterized in that The joint part between the second flat plate section and the upper flange of the lower steel beam is welded all around with fillet welds, and the weld quality grade is grade three.

8. The connection structure according to any one of claims 1 to 7, characterized in that, Corrosion-resistant coatings are provided on the outer surfaces of the first single-ear centripetal spherical plain bearing, the second single-ear centripetal spherical plain bearing, the first pin shaft, and the second pin shaft.

9. The connection structure according to any one of claims 1 to 7, characterized in that, Both the first single-ear centripetal spherical plain bearing and the second single-ear centripetal spherical plain bearing are made of Q355B steel with a thickness of 25 mm.

10. The connection structure according to claim 3 or 6, characterized in that, The high-strength bolts are all 10.9S friction-type M20 torsion-shear high-strength bolts.

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