Vehicle collision prevention device for partition wall in tunnel
By installing a unit-type protective device of rigid collision preventing plates and buffer support made of modified polyurethane materials on the partition wall in the tunnel, the technical problem of vehicle collision prevention in the partition wall in the tunnel is solved, and efficient and economical protection effect is achieved , adapt to different energy levels and provide convenient installation and maintenance solutions.
Patent Information
- Application Number
- CN202420439153.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2023-12-14
- Filing Date
- 2024-03-07
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-03-07
AI Technical Summary
The prior art lacks effective protection measures for vehicle impacts against partition walls in tunnels, resulting in frequent traffic accidents and lacks standardized protection devices and methods.
Design a unit-type protection device consisting of rigid anti-collision plates and deformation-recoverable anti-collision buffer support. The buffer support consists of steel plates and modified polyurethane materials, which are installed on the partition wall in the tunnel by embedded bolts, providing additional Strings to increase stiffness.
The device can be reused in multiple impacts without damage, extending impact time, reducing impact force, and adapting to different energy levels. It has low overall cost and is easy to install and maintain. The unit-style design allows individual units to be replaced without overall replacement.
Smart Images
Figure CN222183162U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of structural engineering protection, and in particular relates to a vehicle impact protection device for a partition wall in a tunnel. Background Art
[0002] With the increasing number of traffic engineering renovation and expansion, a large number of underpasses are being built at important intersections to ease urban road congestion. In recent years, traffic accidents in underpasses have increased. Considering that the partition walls in some tunnels are relatively weak, after being hit by a vehicle, the load-bearing partition walls will be damaged by the impact, which will cause serious traffic accidents and cause significant casualties and direct economic losses. Therefore, it is increasingly important to improve the impact resistance of the partition walls in the tunnel.
[0003] At present, there are no national, industry or local standards to guide the various impact risks of tunnel partition walls, nor are there relevant protection methods and protective devices for protection. Therefore, it is necessary to set up a tunnel partition wall anti-vehicle impact device that is easy to install and maintain, has good protective performance, high reliability and economical cost. Utility Model Content
[0004] Aiming at the problem of preventing vehicle collision of a partition wall in a tunnel, the utility model provides a device for preventing vehicle collision of a partition wall in a tunnel.
[0005] The utility model discloses a tunnel partition wall anti-vehicle collision device, comprising a plurality of unit-type protective devices. The unit-type protective device is composed of a rigid anti-collision plate and 8 deformable and recoverable anti-collision buffer supports, the buffer supports are composed of 2 steel plates and cylindrical buffer materials cast between the steel plates, one side of the steel plate of the buffer support is welded to the back of the rigid anti-collision plate, and the other side of the steel plate of the buffer support is installed on the tunnel partition wall through embedded bolts / expansion bolts.
[0006] Preferably, a reinforcing strip of a "well"-shaped channel steel is welded on the back of the rigid anti-collision plate.
[0007] Preferably, the rigid anti-collision plate has a thickness of 10-20 mm and a shape of a 200 cm×100 cm rectangle.
[0008] Preferably, the steel plate is 10 mm thick and has a shape of a circle with a diameter of 20 mm or a square with a side length of 20 mm.
[0009] Preferably, the buffer material is a modified polyurethane material.
[0010] The beneficial technical effects of the utility model are:
[0011] 1. The buffer support of the utility model is made of superelastic material and can be reused without damage within the designed impact energy.
[0012] 2. The utility model can provide a longer impact displacement and prolong the time of the impact effect; after the buffer support is impacted, it cushions the impact through its own large deformation, prolongs the impact time and reduces the impact force.
[0013] 3. The utility model can adapt to different protection energy level requirements. For working conditions of different energy levels, different types and numbers of buffer supports are selected to meet the protection requirements.
[0014] 4. The utility model has low overall cost and is easy to install and maintain. The protective device is composed of units. When individual units in the protective device are damaged, only the damaged unit block needs to be replaced without replacing the entire device. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 The utility model is a schematic structural diagram of a tunnel partition wall vehicle impact protection device.
[0016] Figure 2 It is a cross-sectional view of the vehicle impact protection device for the tunnel partition wall of the utility model.
[0017] Figure 3 Figure II-II is a vehicle impact protection device for a tunnel partition wall according to the utility model.
[0018] Figure 4 Figure III-III is a vehicle impact protection device for a tunnel partition wall according to the utility model.
[0019] Figure 5 This is a schematic diagram of the structure of the buffer support of the utility model.
[0020] In the figure: 1-rigid anti-collision plate; 2-buffer support; 21-steel plate; 22-buffer material; 3-reinforcement bar; 4-embedded bolt / expansion bolt; 5-tunnel partition wall. DETAILED DESCRIPTION
[0021] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0022] The utility model discloses a tunnel partition wall vehicle collision protection device, which includes a plurality of unit type protection devices. Figure 1 As shown, the unit protection device is composed of a rigid anti-collision plate 1 and 8 deformable and recoverable anti-collision buffer supports 2. The buffer supports 2 are as shown in Figure 5 As shown in FIG. 1 , it is composed of two steel plates 21 and a cylindrical buffer material 22 cast between the steel plates 21. Figure 2 As shown, one side steel plate 21 of the buffer support 2 is welded to the back of the rigid anti-collision plate 1, and the other side steel plate 21 of the buffer support 2 is installed on the partition wall 5 in the tunnel through embedded bolts / expansion bolts 4.
[0023] Preferably, Figure 3As shown, in order to increase the rigidity of the anti-collision plate, a "well"-shaped channel steel can be welded on the back of the rigid anti-collision plate 1 to form a reinforcing strip 3.
[0024] Preferably, the rigid anti-collision plate 1 has a thickness of 10-20 mm and a shape of a 200 cm×100 cm rectangular. The distribution and distance of the buffer supports 2 are as follows: Figure 3 , Figure 4 shown.
[0025] Preferably, the steel plate 21 has a thickness of 10 mm and a shape of a circle with a diameter of 20 mm or a square with a side length of 20 mm.
[0026] Preferably, the buffer material 22 is a modified polyurethane material, which has anti-aging and elastic recovery properties.
[0027] Through experimental tests, it is found that after the buffer support of the utility model is deformed by 60% in tension and compression and 50% in shear, the buffer support does not crack or break and can be used repeatedly. Moreover, under the impact load, one cubic meter of the material can withstand an energy impact of 1000kJ without being damaged.
Claims
1. A tunnel partition wall anti-vehicle collision device, characterized in that: The invention comprises a plurality of unit-type protective devices, which are composed of a rigid anti-collision plate (1) and eight deformable and restorable anti-collision buffer supports (2). The buffer supports (2) are composed of two steel plates (21) and cylindrical buffer materials (22) cast between the steel plates (21). One steel plate (21) of the buffer support (2) is welded to the back of the rigid anti-collision plate (1), and the other steel plate (21) of the buffer support (2) is installed on the tunnel partition wall (5) through embedded bolts / expansion bolts (4).
2. The vehicle impact protection device for a tunnel partition wall according to claim 1, characterized in that: A reinforcing strip (3) of a "well"-shaped channel steel is welded to the back of the rigid anti-collision plate (1).
3. The vehicle impact protection device for a tunnel partition wall according to claim 1, characterized in that: The rigid anti-collision plate (1) has a thickness of 10-20 mm and a shape of a 200 cm×100 cm rectangular.
4. The vehicle impact protection device for a tunnel partition wall according to claim 1, characterized in that: The steel plate (21) has a thickness of 10 mm and a shape of a circle with a diameter of 20 mm or a square with a side length of 20 mm.
5. The vehicle impact protection device for a tunnel partition wall according to claim 1, characterized in that: The buffer material (22) is a modified polyurethane material.