Anti-falling device and anti-falling joint
By designing an anti-fall device with embedded plates, connecting keys and anchor ribs in the building, the problem of falling risks of sliding bearings in extreme cases is solved, and the safety and reliability of sliding bearings are improved, while reducing the safety and seismic performance of sliding bearings. The construction cost is improved and the building aesthetics is improved.
Patent Information
- Application Number
- CN202420810256.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-04-18
AI Technical Summary
The sliding bearings in existing buildings have a high risk of falling in extreme cases, and the rubber bearings are difficult and costly to prepare, and there is a lack of effective anti-fall devices suitable for conventional buildings.
A fall-proof device is designed, including embedded plates, connecting keys and anchor ribs. It is fixedly connected to the anchor ribs through embedded plates and connected through connecting chains. The embedded plates are buried in the concrete beams, and the anchor ribs are strengthened to connect and restrict The displacement between concrete beams reduces the risk of falling while ensuring the normal sliding of the sliding support.
It effectively reduces the fall risk of concrete components in extreme cases, improves the seismic resistance of sliding support, simplifies the device structure and construction process, reduces the production cost, and improves the aesthetics of the building.
Smart Images
Figure CN222349922U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building structures, in particular to an anti-falling device and an anti-falling node. Background Art
[0002] When a large-span concrete bridge is used to connect two buildings, in order to reduce structural irregularities, it is generally chosen to form a seismic joint at the connection between the two. Specifically, one of the buildings extends outward to form a corbel, and the other building is equipped with a cantilever plate erected on the corbel to form a sliding bearing. As the country's requirements for seismic performance become increasingly higher, the anti-fall protection of the sliding bearing is becoming increasingly important.
[0003] However, most of the sliding bearings in existing buildings are simply placed on the corbels. When an earthquake or other extreme situation occurs, the risk of falling will be greatly increased. In response to this situation, some applications choose rubber bearings to reduce the risk of falling. Since the concrete bridge is cast in place, the preparation of rubber bearings is difficult and the construction cost is high.
[0004] Therefore, how to provide a fall prevention device adapted to conventional building sliding supports is a technical problem that urgently needs to be solved. Summary of the invention
[0005] The technical problem to be solved by the utility model is how to reduce the risk of falling of the sliding support and improve the seismic resistance of the sliding support.
[0006] In order to solve the above technical problems, the utility model provides an anti-falling device, which includes:
[0007] Embedded plates, two of which are spaced apart;
[0008] Two connecting keys, each of which is fixedly connected to one side of the embedded plate located in the interval, and a connecting chain is connected between the two connecting keys;
[0009] An anchor bar, arranged on a side of the embedded plate facing away from the connection key and fixedly connected to the embedded plate;
[0010] Wherein, the embedded plate and the anchor bars are embedded in the concrete beam along with the pouring of concrete.
[0011] In some embodiments of the present application, the embedded plate has a length of 300 mm, a width of 200 mm, and a thickness of 20 mm.
[0012] In some embodiments of the present application, there are multiple connection chains, and the number of the connection keys matches the number of the connection chains and corresponds one-to-one with the connection chains.
[0013] In some embodiments of the present application, the connecting chain is a G80 grade manganese steel chain.
[0014] In some embodiments of the present application, the anchor bar includes a main body portion and a reinforcement portion, and the end portion of the anchor bar away from the embedded plate is bent to form the reinforcement portion.
[0015] In some embodiments of the present application, the main body of the anchor bar is not less than 250 mm in length.
[0016] Another object of the present application is to provide an anti-fall node, which includes a first concrete beam, a second concrete beam and the above-mentioned anti-fall device, the end of the first concrete beam extends to form a corbel, the end of the second concrete beam extends to form a cantilever plate, the cantilever plate is erected on the corbel, the anti-fall device is located below the cantilever plate and the corbel, and the two embedded plates are respectively embedded in the first concrete beam and the second concrete beam.
[0017] In some embodiments of the present application, a pad is provided on the top of the corbel.
[0018] In some embodiments of the present application, the pad is made of polytetrafluoroethylene.
[0019] In some embodiments of the present application, a cover plate connected to the first concrete beam and the second concrete beam is provided below the anti-fall device.
[0020] The embodiment of the utility model provides a fall prevention device, which has the following beneficial effects compared with the prior art:
[0021] The present application arranges an anti-fall device under the cantilever plate and the corbel to connect the first concrete beam and the second concrete beam, the cantilever plate is erected on the corbel to form a sliding support, two embedded plates are respectively embedded in the first concrete beam and the second concrete beam and their connection with the beams is strengthened by anchor bars, and then the two vertical embedded plates are connected by a connecting chain. The arrangement of the anti-fall device can limit the displacement limit between the first concrete and the second concrete beams under the premise of ensuring the normal sliding of the sliding support, thereby reducing the risk of concrete components falling in extreme cases, avoiding the situation where the cantilever plate falls, and thus ensuring the safety and reliability of the sliding support; in addition, the embedded plates are directly arranged in the first concrete beam and the second concrete beam, which effectively ensures the consistency of the deformation joint at the sliding support, greatly improving the aesthetics of the building, and the structure of the anti-fall device is simple and reliable, easy to set up, and significantly reduces the production cost while improving the anti-fall capability. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of the structure of the anti-fall node of some embodiments of the utility model;
[0023] Figure 2It is a schematic diagram of the structure of the anti-falling device of some embodiments of the utility model;
[0024] Figure 3 It is a front view of the embedded plate of some embodiments of the utility model;
[0025] Figure 4 It is a schematic diagram of the structure of anchor bars of some embodiments of the utility model.
[0026] In the figure, 1. first concrete beam; 2. corbel; 3. second concrete beam; 4. cantilever plate; 5. anti-fall device; 51. embedded plate; 52. anchor bar; 521. main body; 522. reinforcement; 53. connecting key; 54. connecting chain; 6. pad; 7. cover plate. DETAILED DESCRIPTION
[0027] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0029] like Figures 1 to 4 As shown, an anti-fall node provided by an embodiment of the utility model includes a first concrete beam 1 and a second concrete beam 3, the end of the first concrete beam 1 extends to form a corbel 2, the end of the second concrete beam 3 extends to form a cantilever plate 4, the cantilever plate 4 is erected on the corbel 2, further, the anti-fall node also has an anti-fall device 5, the anti-fall device 5 is located below the cantilever plate 4 and the corbel 2, and includes an embedded plate 51, a connecting key 53 and an anchor 52, the embedded plate 51 is provided with two pieces, the two embedded plates 51 are arranged at intervals and connected by a connecting chain 54, the two connecting keys 53 are respectively fixed on one side of the embedded plate 51 located at the interval, the two ends of the connecting chain 54 are respectively connected to the two connecting keys 53, the anchor 52 is arranged on the side of the embedded plate 51 facing away from the connecting key 53 and is fixedly connected to the embedded plate 51, and the two embedded plates 51 are respectively embedded in the first concrete beam 1 and the second concrete beam 3.
[0030] Based on the above structure, the present application sets an anti-fall device 5 below the cantilever plate 4 and the corbel 2 to connect the first concrete beam 1 and the second concrete beam 3. The cantilever plate 4 is erected on the corbel 2 to form a sliding support. The two embedded plates 51 are respectively embedded in the first concrete beam 1 and the second concrete beam 3 and strengthened with the connection with the beams through anchor bars 52. Then the two vertical embedded plates 51 are connected by a connecting chain 54. The setting of the anti-fall device 5 can limit the displacement limit between the first concrete and the second concrete beam 3 under the premise of ensuring the normal sliding of the sliding support, thereby reducing the risk of concrete components falling in extreme cases, avoiding the cantilever plate 4 from falling, and thus ensuring the safety and reliability of the sliding support; in addition, the embedded plate 51 is directly set in the first concrete beam 1 and the second concrete beam 3, which effectively ensures the consistency of the deformation joint at the sliding support, greatly improving the aesthetics of the building. The structure of the anti-fall device 5 is simple and reliable, easy to set up, and significantly reduces the production cost while improving the anti-fall capability.
[0031] Optionally, in some embodiments of the present application, the length of the embedded plate 51 is preferably 300 mm, the width is preferably 200 mm, and the thickness is preferably 20 mm.
[0032] Furthermore, for the anti-fall device 5 of the present application, in order to further improve the structural strength of the anti-fall device 5, in some embodiments of the present application, a plurality of connecting chains 54 are provided, and the number of connecting keys 53 matches the connecting chains 54 and corresponds to the connecting chains 54 one by one. Specifically, in the embodiment of the present utility model, three connecting chains 54 are provided, and each connecting chain 54 is preferably a G80 grade manganese steel chain, and the length of each connecting chain 54 is 450mm. Of course, in order to strengthen the connection effect, the connecting chain of the present application can also be preferably other high-strength chains, which will not be repeated here.
[0033] Optionally, in some embodiments of the present application, the anchor bar 52 includes a main portion 521 arranged in a straight line and a reinforcing portion 522 arranged at a bent position. Specifically, the main portion 521 of the anchor bar 52 is not less than 250 mm in length, and the end of the anchor bar 52 away from the embedded plate 51 is bent inwardly into the beam to form a corresponding reinforcing portion 522. The setting of the reinforcing portion 522 can further enhance the structural strength of the anchor bar 52 and ensure the connection effect between the anti-fall device 5 and the beam.
[0034] In addition, for the anti-fall node of the present application, a pad 6 made of polytetrafluoroethylene is provided on the top of the corbel 2. The setting of the pad 6 can reduce the friction between the cantilever plate 4 and the corbel 2, thereby ensuring the effective operation of the sliding support.
[0035] Furthermore, in some embodiments of the present application, a cover plate 7 is provided below the anti-fall device 5, and both ends of the cover plate 7 are respectively connected to the first concrete beam 1 and the second concrete beam 3. Based on the above structure, the cover plate 7 can block the bottom area of the anti-fall device 5, prevent debris from entering along the bottom gap to contaminate the anti-fall device 5, and improve the service life of the anti-fall device 5.
[0036] In summary, the anti-fall device of the embodiment of the utility model includes an embedded plate, a connecting key and an anchor bar. The embedded plates are provided with two pieces, and the two embedded plates are connected by a connecting chain. The connecting key is provided on one side of the embedded plate and is fixedly connected thereto. The two ends of the connecting chain are respectively connected to the connecting keys of the two embedded plates. The anchor bar is provided on the side of the embedded plate facing away from the connecting key and is fixedly connected to the embedded plate. The two embedded plates are respectively embedded in the first concrete beam and the second concrete beam. Compared with the prior art, the anti-fall device of the present application is safe and reliable, simple to install on site, convenient to construct, and cost-controllable. It also takes into account the overall effect of the building's appearance, ensures the risk resistance of the sliding support, and improves the seismic performance.
[0037] The present application also provides an anti-fall node, which also has the advantages of simple and reliable structure, excellent seismic performance, etc. due to the anti-fall device.
[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.
Claims
1. A fall prevention device, characterized in that: include: An embedded plate (51), wherein two embedded plates (51) are provided at intervals; Two connecting keys (53), each of the connecting keys (53) being fixedly connected to one side of the embedded plate (51) located in the interval, and a connecting chain (54) being connected between the two connecting keys; An anchor bar (52), arranged on a side of the embedded plate (51) facing away from the connection key (53) and fixedly connected to the embedded plate (51); The embedded plate (51) and the anchor bar (52) are embedded in the concrete beam during concrete pouring.
2. The anti-fall device according to claim 1, characterized in that: The embedded plate (51) has a length of 300 mm, a width of 200 mm and a thickness of 20 mm.
3. The anti-fall device according to claim 1, characterized in that: There are a plurality of connection chains (54), and the number of the connection keys (53) matches that of the connection chains (54) and corresponds one-to-one with the connection chains (54).
4. The anti-fall device according to claim 3, characterized in that: The connecting chain (54) is a G80 grade manganese steel chain.
5. The anti-fall device according to claim 1, characterized in that: The anchor bar (52) comprises a main body portion (521) and a reinforcement portion (522), and the end portion of the anchor bar (52) away from the embedded plate (51) is bent to form the reinforcement portion (522).
6. The anti-fall device according to claim 5, characterized in that: The main body (521) of the anchor bar (52) is not less than 250 mm in length.
7. A fall prevention node, comprising a first concrete beam (1) and a second concrete beam (3), wherein the end of the first concrete beam (1) extends to form a corbel (2), and the end of the second concrete beam (3) extends to form a cantilever plate (4), and the cantilever plate (4) is mounted on the corbel (2), characterized in that: The anti-fall node also has an anti-fall device (5) as described in any one of claims 1 to 6, and the anti-fall device (5) is located below the cantilever plate (4) and the corbel (2), and the two embedded plates (51) are respectively embedded in the first concrete beam (1) and the second concrete beam (3).
8. The anti-fall node according to claim 7, characterized in that: A pad (6) is provided on the top of the corbel (2).
9. The anti-fall node according to claim 8, characterized in that: The pad (6) is made of polytetrafluoroethylene.
10. The anti-fall node according to claim 7, characterized in that: A cover plate (7) connected to the first concrete beam (1) and the second concrete beam (3) is provided below the anti-fall device.