Replaceable energy dissipation beam used in eccentric supporting structure

Abstract

The replaceable energy dissipation beam used in the eccentric supporting structure comprises an upper flange plate and a corresponding lower flange plate, at least one web plate is connected between the upper flange plate and the lower flange plate, the web plate is equal to the upper flange plate and the lower flange plate in length, and connecting assemblies are arranged at the two side ends of the upper flange plate, the lower flange plate and the web plate respectively. The beam end of the external frame beam is detachably connected with the beam end of the external frame beam. The energy dissipation beam and the frame beam are detachably connected through the connecting assembly, so that when the energy dissipation beam is damaged after being subjected to external force such as earthquakes, the energy dissipation beam can be conveniently replaced, the whole structure does not need to be repaired on a large scale, and maintenance efficiency and flexibility are improved; the web plate adopts the corrugated steel plate, particularly the corrugated steel plate with trapezoidal corrugations, and is connected with the upper flange plate and the lower flange plate in the I shape, so that the overall stability and the anti-seismic property of the energy dissipation beam are improved.

Description

TECHNICAL FIELD

[0002] The utility model relates to building anti-seismic technical field especially, a kind of replaceable energy dissipation beam for eccentric braced structure.

BACKGROUND

[0004] With the continuous progress of building technology, steel frame-eccentrically braced structure is widely used in various buildings due to its flexibility and excellent seismic performance. In this structural system, energy dissipation beam plays a crucial role, especially in rare earthquakes, it can dissipate seismic energy by entering plastic stage, thereby protecting the effectiveness of steel frame and braced structure.

[0005] However, traditional eccentrically braced energy dissipation beam usually adopts H-shaped steel and stiffener for on-site welding. This way not only the welding quality is difficult to guarantee, but also often cannot effectively absorb seismic energy. More seriously, once subjected to earthquake damage, these energy dissipation beams often deform severely or even damage, which cannot continue to be used. Since they are welded to the overall structure, it is difficult to replace and repair individually, which brings great difficulty to post-disaster reconstruction and recovery work.

SUMMARY OF THE UTILITY MODEL

[0007] The utility model aims to provide a kind of replaceable energy dissipation beam for eccentric braced structure, to solve the above problems existing in prior art.

[0008] The utility model is realized by the following technical solutions:

[0009] A replaceable energy dissipation beam for eccentric braced structure, comprising upper flange plate and corresponding lower flange plate, at least one web plate is connected between the two, the web plate is equal in length to the upper flange plate and the lower flange plate, and connecting components are respectively arranged at both sides of the three, for detachable connection with the beam end of the external frame beam.

[0010] The replaceable energy dissipation beam for eccentric braced structure as described above, the connecting component comprises end plate fixedly connected with both sides of the web plate, the upper flange plate and the lower flange plate, a plurality of connecting holes are uniformly arranged on the end plate, and the connecting holes are provided with fasteners for detachable connection with the beam end of the frame beam.

[0011] The replaceable energy dissipation beam for eccentric braced structure as described above, the web plate is corrugated steel plate.

[0012] The replaceable energy dissipation beam for eccentric braced structure as described above, the web plate is corrugated steel plate with trapezoidal corrugation.

[0013] As described above, a replaceable energy-dissipating beam for use in an eccentrically supported structure, wherein the web, the upper flange, and the lower flange are connected in an I-shape.

[0014] As described above, in a replaceable energy-dissipating beam for an eccentrically supported structure, the web is connected to the upper flange and the lower flange by double-sided fillet welds.

[0015] As described above, in a replaceable energy-dissipating beam for an eccentrically supported structure, the connection points of the end plate, the web plate, the upper flange plate, and the lower flange plate are integrally welded together by fillet welds.

[0016] As described above, in a replaceable energy-dissipating beam for an eccentrically supported structure, the widths of the upper flange plate and the lower flange plate correspond to the beam width of the frame beam, respectively; the distance from the upper end face of the upper flange plate to the lower end face of the lower flange plate corresponds to the beam height of the frame beam.

[0017] As described above, a replaceable energy-dissipating beam is used in an eccentrically supported structure, wherein the fastener is a high-strength bolt.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. The energy-dissipating beam and the frame beam proposed in this utility model are detachably connected by a connecting component, which makes it easy to replace the energy-dissipating beam when it is damaged by external forces such as earthquakes, without having to carry out large-scale repairs on the entire structure, thus improving maintenance efficiency and flexibility.

[0020] 2. The web of this utility model is made of corrugated steel plate, especially corrugated steel plate with trapezoidal corrugations, and is connected to the upper flange plate and the lower flange plate in an I-shape to improve the overall stability and seismic performance of the energy dissipation beam.

[0021] 3. The web plate is connected to the upper flange plate and the lower flange plate respectively by double-sided fillet welds. The connection points of the end plate with the web plate, the upper flange plate and the lower flange plate are welded together by fillet welds. This connection method is conducive to standardized manufacturing, so that the energy dissipation beam can be used as a prefabricated component and precisely processed and assembled in the factory, avoiding quality problems and safety hazards caused by on-site welding.

[0022] 4. The overall structural design takes into account the shear-type energy dissipation mechanism. The corrugated shape of the web helps to generate more plastic deformation under external forces such as earthquakes, thereby absorbing and dissipating more energy and effectively protecting the safety of the main structure. [Attached Image Description]

[0024] To more clearly illustrate the technical solutions in the embodiments of the utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0025] Figure 1 This is a schematic diagram illustrating the arrangement of this utility model in a steel frame eccentric support structure;

[0026] Figure 2 This is a top view of Embodiment 1 of the present invention;

[0027] Figure 3 This is a side view of Embodiment 1 of the present utility model;

[0028] Figure 4 This is a front view of Embodiment 1 of the present invention;

[0029] Figure 5 for Figure 4 Cross-sectional view along the middle AA;

[0030] Figure 6 This is a top view of Embodiment 2 of the present invention;

[0031] Figure 7 This is a side view of Embodiment 2 of the present invention;

[0032] Figure 8 This is a front view of Embodiment 2 of the present invention;

[0033] Figure 9 for Figure 8 Cross-sectional view along the middle BB.

Detailed Implementation Methods

[0035] To make the technical problems solved by this application, the technical solutions, and the beneficial effects clearer, this application 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 merely illustrative of this application and are not intended to limit this application.

[0036] Example 1:

[0037] Please see Figures 1 to 5 This embodiment provides a replaceable energy-dissipating beam for use in an eccentric support structure, including an upper flange plate 1 and a corresponding lower flange plate 2, with a web plate 3 connecting the two. The web plate 3 is of the same length as the upper flange plate 1 and the lower flange plate 2. Connecting components 4 are provided at both ends of the three for detachable connection with the beam end of an external frame beam 5.

[0038] In this embodiment, the upper flange plate 1 and lower flange plate 2 of the energy-dissipating beam are both made of high-strength steel, possessing excellent load-bearing capacity and plastic deformation capability, and are arranged in parallel. A web plate 3 is located between the upper flange plate 1 and the lower flange plate 2, and is of equal length to both, forming an integral box-shaped cross-section. The web plate 3 is also made of high-strength steel and is used to absorb and dissipate energy. The equal length design of the web plate 3 and the upper and lower flange plates ensures that the energy-dissipating beam is subjected to uniform stress along its entire length, avoiding stress concentration. Connecting components 4 are provided at both ends of the energy-dissipating beam, i.e., the left and right ends of the upper flange plate 1, lower flange plate 2, and web plate 3. These connecting components 4 can be high-strength bolted connections or detachable hinged connections, facilitating quick and reliable connection and disassembly with the beam ends of the external frame beam 5. Through the connecting components 4, the energy-dissipating beam can be easily and detachably connected to the external frame beam 5. This connection method not only simplifies the construction process and reduces installation costs, but also enables the energy-dissipating beam to act as the first line of defense in the event of extreme loads such as earthquakes, absorbing and dissipating energy to protect the main structure from damage. Furthermore, because the energy-dissipating beam can be quickly replaced, when it is damaged in a disaster such as an earthquake, there is no need for large-scale repairs to the entire structure; only the energy-dissipating beam needs to be replaced, greatly reducing maintenance costs and time.

[0039] Specifically, the connecting assembly 4 includes an end plate 41 that is fixedly connected to both sides of the web plate 3, the upper flange plate 1 and the lower flange plate 2. The end plate 41 is provided with a plurality of connecting holes 42 evenly, and the connecting holes 42 are provided with fasteners 43 for detachable connection with the beam end of the frame beam 5.

[0040] In this embodiment, end plates 41 are welded to both ends of the energy-dissipating beam, namely the ends of the upper flange plate 1, the lower flange plate 2, and the web plate 3. The material and thickness of the end plates 41 are matched with the other components of the energy-dissipating beam to ensure the strength and rigidity of the overall structure.

[0041] The end plate 41 is evenly provided with a plurality of connecting holes 42, which are distributed in a predetermined pattern to align and connect with the beam ends of the external frame beam 5. The connecting holes 42 are equipped with fasteners 43, which can be high-strength bolts, and more preferably, external hexagonal high-strength bolts, for detachable connection of the energy-dissipating beam to the beam ends of the frame beam 5. To ensure a more reliable and stable connection, the beam ends of the frame beam 5 can be pre-set with corresponding connecting steel plates, which have mounting holes corresponding to the connecting holes 42 on the end plate 41.

[0042] Furthermore, as a preferred embodiment of this solution and not a limitation, the web 3 is a corrugated steel plate. In practical engineering applications, when subjected to dynamic loads such as earthquakes, the corrugated steel plate web 3 will first undergo plastic deformation, absorbing and dissipating energy through the unfolding and compression of the corrugations. This plastic deformation not only slows down the load transmission rate but also reduces the overall structural response, thereby protecting the main structure from damage. When the corrugated steel plate web 3 absorbs too much energy and is damaged, the energy-dissipating beam can be quickly disassembled and replaced with a new energy-dissipating beam through the connecting assembly 4, restoring the seismic performance of the structure.

[0043] Specifically, when corrugated steel plate is used as web plate 3, corrugated steel plate with rectangular corrugations, triangular corrugations, sine corrugations, trapezoidal corrugations, etc. can be selected, with trapezoidal corrugated steel plate being preferred.

[0044] Furthermore, as a preferred embodiment of this solution and not a limitation, the web plate 3, the upper flange plate 1, and the lower flange plate 2 are connected in an I-shape.

[0045] In this embodiment, the upper edge of the web plate 3 is firmly welded to the lower surface of the upper flange plate 1, and the lower edge of the web plate 3 is also firmly welded to the upper surface of the lower flange plate 2, forming an I-shaped connection structure. This improves the overall stiffness and strength of the energy-dissipating beam and allows it to transmit and distribute loads more evenly when under stress, thus optimizing its energy dissipation performance.

[0046] Furthermore, as a preferred embodiment of this solution, and not a limitation thereof, the web plate 3 is connected to the upper flange plate 1 and the lower flange plate 2 respectively using double-sided fillet welds. Double-sided fillet weld connection is a robust connection method that firmly connects the web plate and the upper and lower flange plates by forming two parallel welds on their contact surfaces. This further enhances the connection strength between the web plate 3 and the upper and lower flange plates 1 and 2, enabling the energy-dissipating beam to withstand greater loads and deformations.

[0047] Furthermore, as a preferred embodiment of this solution and not a limitation, the connection points between the end plate 41 and the web plate 3, the upper flange plate 1, and the lower flange plate 2 are integrally welded together using fillet welds. More specifically, this means that the side ends of the I-shaped connection structure formed by the web plate 3, the upper flange plate 1, and the lower flange plate 2 are connected to the end plate 41 using fillet welds, which increases the welding area and thus significantly enhances the integrity and stability of the energy-dissipating beam, enabling it to withstand greater loads and deformations.

[0048] Furthermore, as a preferred embodiment of this solution and not a limitation, the widths of the upper flange plate 1 and the lower flange plate 2 correspond to the beam width of the frame beam 5, respectively; the distance from the upper end face of the upper flange plate 1 to the lower end face of the lower flange plate 2 corresponds to the beam height of the frame beam 5. These well-matched dimensional designs not only improve the installation accuracy and stability of the energy-dissipating beam but also ensure that a good force transfer path can be formed between the energy-dissipating beam and the frame beam 5, thereby improving the overall seismic performance of the structure.

[0049] Example 2:

[0050] Please see Figure 1 , Figures 6 to 9 This embodiment provides a replaceable energy-dissipating beam for eccentrically supported structures. Unlike Embodiment 1, it features a double-layer web structure connecting the upper flange plate 1 and the lower flange plate 2. These two web plates 3, viewed as a whole, coincide with the centerline of the flange plates. All other structural features are identical to Embodiment 1 and will not be repeated here. Compared to Embodiment 1, the double-layer web structure significantly improves the load-bearing capacity and stability of the eccentrically supported structure. It better disperses and transfers loads, reducing the risk of structural failure. This design is suitable for scenarios with high requirements for energy dissipation, load-bearing capacity, and stability, such as critical structural components in high-rise buildings and large bridges.

[0051] Working principle of this utility model:

[0052] This invention provides a replaceable energy-dissipating beam for eccentrically supported structures, primarily composed of an upper flange plate, a lower flange plate, and a web plate, forming a box-shaped cross-section structure. The energy-dissipating beam is detachably connected to external frame beams via connecting components. Under extreme loads such as earthquakes, the energy-dissipating beam acts as the first line of defense, absorbing and dissipating energy through its plastic deformation, thereby protecting the main structure. In particular, the corrugated steel web plate design allows it to undergo plastic deformation under stress, dissipating energy through the unfolding and compression of the corrugations. When the energy-dissipating beam is damaged, it can be quickly replaced, reducing maintenance costs and time. Furthermore, by optimizing the connection method and weld design, the overall integrity and stability of the energy-dissipating beam are enhanced.

[0053] The above are implementation methods provided in conjunction with specific content, and it is not intended that the specific implementation of this application is limited to these descriptions. Any methods or structures that are similar to those of this application, or any technical deductions or substitutions made based on the concept of this application, should be considered within the scope of protection of this application.

Claims

1. A replaceable energy-dissipating beam for use in an eccentrically supported structure, comprising an upper flange plate (1) and a corresponding lower flange plate (2), wherein at least one web plate (3) connects the two, characterized in that: The web (3) is the same length as the upper flange (1) and the lower flange (2), and connecting components (4) are provided on both sides of the three for detachable connection with the beam end of the external frame beam (5).

2. A replaceable energy-dissipating beam for an eccentrically supported structure according to claim 1, characterized in that, The connecting assembly (4) includes an end plate (41) that is fixedly connected to both sides of the web (3), the upper flange (1) and the lower flange (2). The end plate (41) is provided with a plurality of connecting holes (42) evenly. The connecting holes (42) are provided with fasteners (43) for detachable connection with the beam end of the frame beam (5).

3. A replaceable energy-dissipating beam for an eccentrically supported structure according to claim 1, characterized in that, The web (3) is a corrugated steel plate.

4. A replaceable energy-dissipating beam for an eccentrically supported structure according to claim 3, characterized in that, The web (3) is a corrugated steel plate with trapezoidal corrugations.

5. A replaceable energy-dissipating beam for an eccentrically supported structure according to claim 1, characterized in that, The web plate (3), the upper flange plate (1) and the lower flange plate (2) are connected in an I-shape.

6. A replaceable energy-dissipating beam for an eccentrically supported structure according to claim 1, characterized in that, The web plate (3) is connected to the upper flange plate (1) and the lower flange plate (2) by double-sided fillet welds.

7. A replaceable energy-dissipating beam for an eccentrically supported structure according to claim 2, characterized in that, The connection points of the end plate (41) with the web plate (3), the upper flange plate (1), and the lower flange plate (2) are welded together by fillet welds.

8. A replaceable energy-dissipating beam for an eccentrically supported structure according to claim 1, characterized in that, The widths of the upper flange plate (1) and the lower flange plate (2) correspond to the beam width of the frame beam (5); the distance from the upper end face of the upper flange plate (1) to the lower end face of the lower flange plate (2) corresponds to the beam height of the frame beam (5).

9. A replaceable energy-dissipating beam for an eccentrically supported structure according to claim 2, characterized in that, The fastener (43) is a high-strength bolt.

Images