Retractable guard for structural corridor seismic joint
By designing retractable guardrails at the seismic joints of building corridors, and utilizing sliding connections and high-strength steel plate structures, the safety problem of large deformations under moderate or major earthquakes was solved, and effective protection against falls was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI CHINA CONSTR ARCHITECTURAL DESIGN INST CO LTD
- Filing Date
- 2025-08-25
- Publication Date
- 2026-07-14
AI Technical Summary
The existing seismic joints in the connecting corridors of buildings cannot effectively cope with large deformations under moderate or major earthquakes, leading to safety hazards. Conventional steel plate railings cannot meet the safety requirements under large deformations.
A retractable guardrail for seismic joints in structural corridors has been designed, including a first crossbeam and a second crossbeam, which are slidably connected by a bracket and a slider. High-strength longitudinal steel plates and folding plates are riveted together, which can automatically expand during an earthquake to block the gap and prevent people from falling.
It effectively prevents people from falling during major earthquakes, improves the safety of the seismic joints in the structural corridor, and adapts to the expansion and contraction requirements of large deformations.
Smart Images
Figure CN224496028U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building engineering technology, and in particular to a retractable guardrail for use at the seismic joint of a structural corridor. Background Technology
[0002] In existing high-rise building structures, when two towers are connected by a corridor at a high point, a seismic joint is typically installed at one end between the two towers. A sliding bearing is installed at this seismic joint. Under earthquake conditions, the corridor will experience oscillating movement. Conventional seismic joint installations allow for only 100-150mm of expansion and contraction. However, the deformation at the sliding bearing location can reach 300-400mm under moderate or strong earthquakes, posing a risk of people falling during an earthquake.
[0003] Currently, the standard practice for building expansion joint locations is to install folded steel plates to resist expansion and contraction at the expansion joint location. However, this method can only guarantee safety when the building deformation is small and cannot meet the enclosure safety requirements for large deformations under earthquake action. Utility Model Content
[0004] The purpose of this utility model is to solve the safety problem of large deformation at the anti-collision joints of structural corridors under moderate or major earthquakes, and to propose a retractable guardrail for the anti-seismic joints of structural corridors.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a retractable guardrail for the seismic joint of a structural corridor, comprising a first crossbeam, a second crossbeam on one side of the first crossbeam, multiple high-strength longitudinal steel plates installed at the top of both the first and second crossbeams, a high-strength horizontal steel plate being installed in each of the high-strength longitudinal steel plates on the first and second crossbeams, and multiple folding plates between the two sets of high-strength longitudinal steel plates, each of the folding plates being rotatably connected by rivets.
[0006] Preferably, one end of the first crossbeam is fixed with a bracket, and the top of the bracket is fixed with a slider, which is disposed inside the second crossbeam and slidably connected to the second crossbeam.
[0007] Preferably, each of the high-strength longitudinal steel plates has a pre-embedded connector fixed at its bottom end.
[0008] Preferably, the pre-embedded connector is disposed in the first crossbeam and the second crossbeam and is fixed to the corresponding first crossbeam and the second crossbeam respectively.
[0009] Preferably, the two outermost folding plates are rotatably connected to two high-strength longitudinal steel plates at opposite ends by rivets.
[0010] Preferably, each set of high-strength longitudinal steel plates contains two high-strength horizontal steel plates.
[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0012] In this invention, when an earthquake occurs, because there is a certain gap between the first and second crossbeams, and the first and second crossbeams are slidably connected by brackets and sliders, the first and second crossbeams will separate. When they separate, the two sets of first high-strength longitudinal steel plates will drive multiple folding plates to fold and expand, thereby blocking the gap between the two sets of high-strength longitudinal steel plates and preventing people from falling, making it more practical. Attached Figure Description
[0013] Figure 1 This utility model provides a schematic diagram for the use of seismic joints in structural corridors when the gaps in corridors that have not experienced earthquakes are small.
[0014] Figure 2 This utility model provides a schematic diagram of the situation where the gap in the structural corridor widens during an earthquake, as indicated by the earthquake-resistant joint.
[0015] Legend: 1. First crossbeam; 2. Second crossbeam; 3. Bracket; 4. Slider; 5. High-strength longitudinal steel plate; 6. Embedded connector; 7. High-strength horizontal steel plate; 8. Folded plate; 9. Rivet. Detailed Implementation
[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0018] Example 1, as Figure 1-2 As shown, this utility model provides a retractable guardrail for the seismic joint of a structural corridor, including a first crossbeam 1, a second crossbeam 2 on one side of the first crossbeam 1, multiple high-strength longitudinal steel plates 5 installed at the top of both the first crossbeam 1 and the second crossbeam 2, a high-strength horizontal steel plate 7 installed in each of the high-strength longitudinal steel plates 5 on the first crossbeam 1 and the second crossbeam 2, and multiple folding plates 8 between the two sets of high-strength longitudinal steel plates 5, each folding plate 8 being rotatably connected by rivets 9.
[0019] The effect achieved by the entire embodiment 1 is that when an earthquake occurs, the first crossbeam 1 and the second crossbeam 2 will separate. When they separate, the two sets of first high-strength longitudinal steel plates 5 will drive multiple folding plates 8 to fold and expand, thereby blocking the gap between the two sets of high-strength longitudinal steel plates 5 and preventing people from falling. It is more practical. With the setting of rivets 9, each folding plate 8 can be folded and expanded or folded and contracted.
[0020] Example 2, as Figure 1-2 As shown, a bracket 3 is fixed to one end of the first crossbeam 1, and a slider 4 is fixed to the top of the bracket 3. The slider 4 is located inside the second crossbeam 2 and is slidably connected to the second crossbeam 2. A pre-embedded connector 6 is fixed to the bottom end of each high-strength longitudinal steel plate 5. The pre-embedded connector 6 is located inside the first crossbeam 1 and the second crossbeam 2 and is fixed to its corresponding first crossbeam 1 and the second crossbeam 2 respectively. The two outermost folding plates 8 are rotatably connected to the two high-strength longitudinal steel plates 5 respectively by rivets 9. Two high-strength horizontal steel plates 7 are installed in each group of high-strength longitudinal steel plates 5.
[0021] The effect achieved by the entire embodiment 2 is that when an earthquake occurs, because there is a certain gap between the first crossbeam 1 and the second crossbeam 2, and the first crossbeam 1 and the second crossbeam 2 are slidably connected by the bracket 3 and the slider 4, the first crossbeam 1 and the second crossbeam 2 will separate. By setting the pre-embedded connecting parts 6, the docking stability between each high-strength longitudinal steel plate 5 and the first crossbeam 1 and the second crossbeam 2 can be increased. By setting two high-strength horizontal steel plates 7, the two sets of high-strength longitudinal steel plates 5 can be stabilized.
[0022] Working principle: When an earthquake occurs, the first crossbeam 1 and the second crossbeam 2 will separate because there is a certain gap between them. The first crossbeam 1 and the second crossbeam 2 are connected by the bracket 3 and the slider 4. When they separate, the two sets of first high-strength longitudinal steel plates 5 will drive multiple folding plates 8 to fold and expand, thereby blocking the gap between the two sets of high-strength longitudinal steel plates 5 and preventing people from falling. This makes the device more practical.
[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A retractable guardrail for use at seismic joints of structural corridors, comprising a first crossbeam (1), characterized in that: A second crossbeam (2) is provided on one side of the first crossbeam (1). Multiple high-strength longitudinal steel plates (5) are installed at the top of both the first crossbeam (1) and the second crossbeam (2). A high-strength horizontal steel plate (7) is installed in each of the high-strength longitudinal steel plates (5) on the first crossbeam (1) and the second crossbeam (2). Multiple folding plates (8) are provided between the two sets of high-strength longitudinal steel plates (5). Each folding plate (8) is rotatably connected by rivets (9).
2. The retractable guardrail for seismic joints in structural corridors according to claim 1, characterized in that: One end of the first crossbeam (1) is fixed with a cow leg (3), and the top end of the cow leg (3) is fixed with a slider (4). The slider (4) is located inside the second crossbeam (2) and is slidably connected to the second crossbeam (2).
3. The retractable guardrail for seismic joints in structural corridors according to claim 1, characterized in that: Each of the high-strength longitudinal steel plates (5) is fixed with a pre-embedded connector (6) at its bottom end.
4. The retractable guardrail for seismic joints in structural corridors according to claim 3, characterized in that: The pre-embedded connector (6) is installed in the first crossbeam (1) and the second crossbeam (2) and is fixed to its corresponding first crossbeam (1) and second crossbeam (2) respectively.
5. The retractable guardrail for seismic joints in structural corridors according to claim 1, characterized in that: The two outermost folding plates (8) are rotatably connected to two high-strength longitudinal steel plates (5) by rivets (9) at opposite ends.
6. The retractable guardrail for seismic joints in structural corridors according to claim 1, characterized in that: Each set of high-strength longitudinal steel plates (5) contains two high-strength horizontal steel plates (7).