Active and passive dual combined pier protection structure
By adopting an active and passive dual-combination design in the bridge pier protective structure, combining low yield point steel and light energy-consuming body, more efficient impact energy absorption and consumption is achieved, and the existing bridge pier anti-collision design is solved in the face of the hull or The problem of insufficient energy absorption during vehicle impact significantly reduces the losses and casualties caused by accidents.
Patent Information
- Application Number
- CN202010755861.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-07-31
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2040-07-31
AI Technical Summary
When the existing bridge pier anti-collision design faces a hull or vehicle impact, it has not yet effectively absorbed and cushioned the impact force, resulting in excessive impact force, causing casualties and property losses. It has also started design and research in maritime traffic late. Lack of effective anti-collision measures.
The active and passive double combined bridge pier protection structure is adopted. By setting up a collision buffer displacement cavity and combining the energy consumption principle of active impact and passive impact double resistance superposition, the damping effect during impact is increased and the energy at the moment of impact is consumed. The structure includes low yield point steel, foam aluminum light energy-consuming body, impact-resistant mixing layer mixed with sand and polypropylene emulsion, alternately arranged internal and peripheral energy-consuming resistance connecting cylinders and driving displacement rods, and energy consumption is consumed using the yield mechanism.
It significantly improves the anti-collision energy consumption capacity and damping effect, extends the service life of the anti-collision system, reduces the losses caused by accidents, and maximizes the protection of life and property safety.
Smart Images
Figure CN111733741B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of road and bridge traffic safety facilities, and in particular relates to an active and passive double combined bridge pier protection structure. Background Art
[0002] Anti-collision bridge piers are a very common road, bridge and maritime traffic safety facility, and have been widely used in some relatively dangerous areas. When objects such as hulls or vehicles collide with bridge piers, setting up an anti-collision bridge pier with buffering performance or a bridge pier anti-collision installation kit can greatly buffer the huge impact force generated by the collision, thereby greatly reducing the serious consequences of traffic collision accidents. Under the huge impact force, strong, impact-resistant and good buffering anti-collision bridge piers are very necessary road, bridge and maritime traffic safety infrastructure. In the past twenty years, my country has built nearly 100 cross-river and cross-sea bridges, many of which are super projects, but incidents such as hulls hitting bridge piers have occurred from time to time, causing major casualties and property losses, indicating that there are still deficiencies in the anti-collision design and anti-collision measures of bridge piers in maritime traffic. my country's research on bridge pier anti-collision started relatively late, and the degree of attention in the early stage was not good enough. Many anti-collision design theories and calculation methods refer to foreign research results. Therefore, it is particularly important to develop and design anti-collision pier facilities that can effectively absorb and buffer the impact force of objects such as the hull on the bridge piers, and can take away most of the kinetic energy of the hull through the yaw mechanism, so as to achieve the design purpose of no damage to the bridge, no destruction of the hull, and strong enough piers. Moreover, my country's maritime traffic plays an important role in the national economy and social development. At the same time, my country's road traffic and bridges are developing rapidly. Anti-collision piers or pier anti-collision installation kits with buffering performance are very important safety protection facilities for road traffic. They can effectively play a role in prevention, warning and safety protection, effectively reduce the losses caused by accidents, effectively reduce the probability of damage to vehicles and piers caused by accidental collisions, reduce the probability of property losses and casualties, and protect people's lives and property from infringement to the greatest extent. Therefore, it is very important to provide an anti-collision pier with good impact resistance, low cost, long life, higher safety, green environmental protection, and good use effect. Various types of collisions and other accidents often cause casualties and economic losses due to the huge impact force generated by the collision. In order to minimize the losses caused by the collision, it is necessary to develop anti-collision bridge piers with better anti-collision effects. It is very necessary to build a series of safety anti-collision projects such as anti-collision bridge piers with better anti-collision effects in some highway areas with bridges. It can significantly control the consequences of traffic accidents caused by collisions and can effectively reduce casualties and economic losses. Summary of the invention
[0003] In order to solve the above-mentioned technical problems, the present invention provides an active and passive dual combined pier protection structure, which increases the damping effect during impact and consumes the energy at the moment of impact by setting a collision buffer displacement cavity and adopting the energy dissipation principle of active impact and passive impact dual resistance superposition.
[0004] In order to achieve the above object, the technical solution adopted by the present invention is:
[0005] An active and passive dual combined bridge pier protection structure, including a bridge pier, an anti-collision outer cushion layer, an upper connecting plate, a lower connecting plate, an external impact extrusion fixed connecting cylinder, an internal fixed connecting cylinder, a collision buffer energy-absorbing displacement cavity, a displacement cavity main shock-absorbing spring, a displacement cavity auxiliary shock-absorbing spring, a main anti-impact resistance mixed layer, a mixed layer built-in cavity, a lightweight injection energy-absorbing body, a mixed layer built-in shock-absorbing energy-dissipating spring structure, an active impact-driven displacement rod, a passive impact-driven displacement rod, a locking nut, an inner peripheral energy-absorbing resistance connecting cylinder, and an outer peripheral energy-absorbing resistance connecting cylinder. The outer layer of the bridge pier is provided with an inner fixed connecting cylinder, and the outer layer of the inner fixed connecting cylinder is provided with an outer collision The outer impact extrusion fixed connection cylinder is provided with an upper connection plate above the outer impact extrusion fixed connection cylinder and the inner fixed connection cylinder, and a lower connection plate is provided below the outer layer of the outer impact extrusion fixed connection cylinder. The structure surrounded by the upper connection plate, the lower connection plate, the outer impact extrusion fixed connection cylinder and the inner fixed connection cylinder is provided with an inner energy-dissipating resistance connection cylinder body and an outer energy-dissipating resistance connection cylinder body. The inner energy-dissipating resistance connection cylinder body is formed by alternately connecting the inner concave section of the inner cylinder body and the outer convex section of the inner cylinder body. The outer energy-dissipating resistance connection cylinder body is formed by alternately connecting the outer convex section of the outer cylinder body and the inner concave section of the outer cylinder body. The inner energy-dissipating resistance connection cylinder body is formed by alternately connecting the outer convex section of the outer cylinder body and the inner concave section of the outer cylinder body. A plurality of mixed layer built-in shock-absorbing and energy-dissipating spring structures are arranged between the cylinder and the outer energy-absorbing and resisting connecting cylinder, and the main impact-resistant mixed layer is filled. A plurality of mixed layer built-in cavities are arranged inside the main impact-resistant and resisting mixed layer, and the interior of the mixed layer built-in cavities is filled with a lightweight injected energy-absorbing body. The area between the inner fixed connecting cylinder and the inner energy-absorbing and resisting connecting cylinder, and between the outer impact and extrusion fixed connecting cylinder and the outer energy-absorbing and resisting connecting cylinder is a collision buffer energy-absorbing displacement cavity. A displacement cavity main shock-absorbing spring is arranged between the outer convex section of the inner cylinder and the inner fixed connecting cylinder, and between the inner concave section of the outer cylinder and the outer impact and extrusion fixed connecting cylinder. A displacement cavity auxiliary shock-absorbing spring is arranged between the concave section and the inner fixed connecting cylinder, and between the outer convex section of the outer cylinder and the outer impact extrusion fixed connecting cylinder. Active impact-driven displacement rods and passive impact-driven displacement rods are alternately arranged to pass through the inner energy-absorbing resistance connecting cylinder and the outer energy-absorbing resistance connecting cylinder. The end of the active impact-driven displacement rod is connected to the inner wall of the outer impact extrusion fixed connecting cylinder, and the end of the passive impact-driven displacement rod is connected to the outer wall of the inner fixed connecting cylinder. Locking nuts are used to fix the active impact-driven displacement rod and the passive impact-driven displacement rod on both sides of the inner energy-absorbing resistance connecting cylinder and both sides of the outer energy-absorbing resistance connecting cylinder.
[0006] Furthermore, the materials used for the outer impact extrusion fixed connection cylinder, the inner fixed connection cylinder, the inner peripheral energy dissipation resistance connection cylinder and the outer peripheral energy dissipation resistance connection cylinder are low yield point steel materials determined according to design requirements.
[0007] Furthermore, the material used for the lightweight injected energy-absorbing body is foamed aluminum.
[0008] Furthermore, the main impact-resistant mixed layer is made by mixing sand and polypropylene emulsion, and rubber particles are added therein, and the rubber particles are made of waste tires.
[0009] Furthermore, the outer impact extrusion fixed connection cylinder, the inner fixed connection cylinder, the inner peripheral energy dissipation resistance connection cylinder, and the outer peripheral energy dissipation resistance connection cylinder are all fixedly connected to the upper connection plate and the lower connection plate.
[0010] Furthermore, two ends of the built-in shock-absorbing and energy-dissipating spring structure of the mixed layer are connected to the outer convex section of the inner cylinder and the inner concave section of the outer cylinder.
[0011] Furthermore, the active impact drives the displacement rod to pass through the inner concave section of the inner cylinder and the outer concave section of the outer cylinder.
[0012] Furthermore, the passive impact drives the displacement rod to pass through the outer convex section of the inner cylinder and the outer convex section of the outer cylinder.
[0013] The advantages of the present invention are:
[0014] The beneficial effects of the present invention are as follows: by setting up a collision buffer displacement cavity and adopting the active impact and passive impact dual resistance superposition type energy dissipation principle, the advantages of the low yield point steel set in the defense are fully utilized, the anti-collision energy dissipation capacity, damping effect and ductility capacity of the entire anti-collision system are increased, and the yield mechanism is used to dissipate energy. The active impact drives the displacement rod to drive the inner energy dissipation resistance connecting cylinder and the outer energy dissipation resistance connecting cylinder to actively resist energy dissipation, and the passive impact drives the displacement rod to drive the inner energy dissipation resistance connecting cylinder and the outer energy dissipation resistance connecting cylinder to passively resist energy dissipation. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic top view of the active and passive dual combined bridge pier protection structure of the present invention.
[0016] Figure 2 for Figure 1 AA cross-section diagram of .
[0017] Figure 3 Schematic diagram of the upper connecting plate structure.
[0018] Figure 4 Schematic diagram of the lower connecting plate structure.
[0019] In the figure: 1 is a bridge pier; 2 is an anti-collision outer cushion layer; 3 is an upper connecting plate; 4 is a lower connecting plate; 5 is an external impact extrusion fixed connecting cylinder; 6 is an internal fixed connecting cylinder; 7 is a collision buffer energy-absorbing displacement cavity; 8 is a main shock-absorbing spring of the displacement cavity; 9 is an auxiliary shock-absorbing spring of the displacement cavity; 10 is a main anti-impact resistance mixed layer; 11 is a built-in cavity of the mixed layer; 12 is a lightweight injected energy-absorbing body; 13 is a built-in shock-absorbing energy-dissipating spring structure of the mixed layer; 14 is an active impact-driven displacement rod; 15 is a passive impact-driven displacement rod; 16 is a locking nut; 17 is an inner peripheral energy-absorbing resistance connecting cylinder; 18 is a concave section of the inner peripheral cylinder; 19 is a convex section of the inner peripheral cylinder; 20 is an outer peripheral energy-absorbing resistance connecting cylinder; 21 is a convex section of the outer peripheral cylinder; 22 is a concave section of the outer peripheral cylinder. DETAILED DESCRIPTION
[0020] In order to further illustrate the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and embodiments, but they should not be construed as limiting the protection scope of the present invention.
[0021] Example: Figure 1~Figure 4As shown, an active and passive dual combined bridge pier protection structure comprises a bridge pier 1, an anti-collision outer cushion layer 2, an upper connecting plate 3, a lower connecting plate 4, an external impact extrusion fixed connecting tube 5, an internal fixed connecting tube 6, a collision buffer energy-absorbing displacement cavity 7, a displacement cavity main shock-absorbing spring 8, a displacement cavity auxiliary shock-absorbing spring 9, a main anti-impact resistance mixed layer 10, a mixed layer built-in cavity 11, a lightweight injection energy-absorbing body 12, a mixed layer built-in shock-absorbing energy-dissipating spring structure 13, an active impact-driven displacement rod 14, a passive impact-driven displacement rod 15, a locking nut 16, an inner peripheral energy-absorbing resistance connecting cylinder 17, and an outer peripheral energy-absorbing resistance connecting cylinder 20. The outer layer of the bridge pier 1 is provided with an inner fixed connecting tube 6, and the outer layer of the inner fixed connecting tube 6 is provided with An external impact extrusion fixed connecting cylinder 5 is arranged, an upper connecting plate 3 is arranged above the external impact extrusion fixed connecting cylinder 5 and the internal fixed connecting cylinder 6, and a lower connecting plate 4 is arranged below the lower part, an outer layer of the external impact extrusion fixed connecting cylinder 5 is provided with an anti-collision outer cushion layer 2, an inner peripheral energy dissipation resistance connecting cylinder body 17 and an outer peripheral energy dissipation resistance connecting cylinder body 20 are arranged inside the structure surrounded by the upper connecting plate 3, the lower connecting plate 4, the external impact extrusion fixed connecting cylinder 5, and the internal fixed connecting cylinder 6, the inner peripheral energy dissipation resistance connecting cylinder body 17 is formed by alternately connecting the inner peripheral cylinder body concave section 18 and the inner peripheral cylinder body convex section 19, the outer peripheral energy dissipation resistance connecting cylinder body 20 is formed by alternately connecting the outer peripheral cylinder body convex section 21 and the outer peripheral cylinder body concave section 22, the inner peripheral energy dissipation resistance connecting cylinder body A plurality of mixed layer built-in shock-absorbing and energy-dissipating spring structures 13 are arranged between the cylinder 17 and the outer energy-dissipating and resistant connecting cylinder 20, and the main impact-resistant mixed layer 10 is filled. A plurality of mixed layer built-in cavities 11 are arranged inside the main impact-resistant mixed layer 10, and the interior of the mixed layer built-in cavities 11 is filled with a lightweight injected energy-dissipating body 12. The area between the inner fixed connecting cylinder 6 and the inner energy-dissipating and resistant connecting cylinder 17, and between the outer impact and extrusion fixed connecting cylinder 5 and the outer energy-dissipating and resistant connecting cylinder 20 is a collision buffering and energy-dissipating displacement cavity 7. A displacement cavity main shock-absorbing spring 8 is arranged between the outer convex section 19 of the inner cylinder and the inner fixed connecting cylinder 6, and between the inner concave section 22 of the outer cylinder and the outer impact and extrusion fixed connecting cylinder 5. A displacement chamber auxiliary shock-absorbing spring 9 is arranged between the concave section 18 and the inner fixed connecting cylinder 6, and between the outer convex section 21 of the outer cylinder and the outer impact-extrusion fixed connecting cylinder 5. The active impact-driven displacement rod 14 and the passive impact-driven displacement rod 15 are alternately arranged to pass through the inner energy-absorbing resistance connecting cylinder 17 and the outer energy-absorbing resistance connecting cylinder 20. The end of the active impact-driven displacement rod 14 is connected to the inner wall of the outer impact-extrusion fixed connecting cylinder 5, and the end of the passive impact-driven displacement rod 15 is connected to the outer wall of the inner fixed connecting cylinder 6. The locking nut 16 is used to fix the active impact-driven displacement rod 14 and the passive impact-driven displacement rod 15 on both sides of the inner energy-absorbing resistance connecting cylinder 17 and both sides of the outer energy-absorbing resistance connecting cylinder 20 respectively.
[0022] The materials used for the outer impact extrusion fixed connection cylinder 5, the inner fixed connection cylinder 6, the inner peripheral energy dissipation resistance connection cylinder 17 and the outer peripheral energy dissipation resistance connection cylinder 20 are low yield point steel materials determined according to design requirements.
[0023] The material used for the lightweight injected energy-absorbing body 12 is foamed aluminum.
[0024] The main impact-resistant mixed layer 10 is made by mixing sand and polypropylene emulsion, and rubber particles are added therein, and the rubber particles are made of waste tires.
[0025] The outer impact extrusion fixed connection cylinder 5 , the inner fixed connection cylinder 6 , the inner peripheral energy dissipation resistance connection cylinder 17 , and the outer peripheral energy dissipation resistance connection cylinder 20 are all fixedly connected to the upper connection plate 3 and the lower connection plate 4 .
[0026] The two ends of the built-in shock-absorbing and energy-dissipating spring structure 13 of the mixed layer are connected to the outer convex section 19 of the inner cylinder and the inner concave section 22 of the outer cylinder.
[0027] The active impact drives the displacement rod 14 to pass through the inner concave section 18 of the inner cylinder and the outer concave section 22 of the outer cylinder.
[0028] The passive impact drives the displacement rod 15 to pass through the outer convex section 19 of the inner cylinder and the outer convex section 21 of the outer cylinder.
[0029] 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 modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.
Claims
1. An active and passive dual combined bridge pier protection structure, comprising a bridge pier (1), an anti-collision outer cushion layer (2), an upper connecting plate (3), a lower connecting plate (4), an external impact extrusion fixed connecting cylinder (5), an internal fixed connecting cylinder (6), a collision buffer energy-absorbing displacement cavity (7), a displacement cavity main shock-absorbing spring (8), a displacement cavity auxiliary shock-absorbing spring (9), a main anti-impact resistance mixed layer (10), a mixed layer built-in cavity (11), a light-weight injection energy-absorbing body (12), a mixed layer built-in shock-absorbing energy-dissipating spring structure (13), an active impact-driven displacement rod (14), a passive impact-driven displacement rod (15), a locking nut (16), an inner peripheral energy-absorbing resistance connecting cylinder (17), and an outer peripheral energy-absorbing resistance connecting cylinder (20), characterized in that: The outer layer of the bridge pier (1) is provided with an inner fixed connection tube (6), the outer layer of the inner fixed connection tube (6) is provided with an outer impact extrusion fixed connection tube (5), an upper connection plate (3) is provided above the outer impact extrusion fixed connection tube (5) and the inner fixed connection tube (6), and a lower connection plate (4) is provided below the outer impact extrusion fixed connection tube (5), an outer layer of the outer impact extrusion fixed connection tube (5) is provided with an anti-collision outer cushion layer (2), an inner peripheral energy dissipation resistance connection tube body (17) and an outer peripheral energy dissipation resistance connection tube body (20) are provided inside the structure surrounded by the upper connection plate (3), the lower connection plate (4), the outer impact extrusion fixed connection tube (5) and the inner fixed connection tube (6), the inner peripheral energy dissipation resistance connection tube body (17) and the outer peripheral energy dissipation resistance connection tube body (20), the inner peripheral energy dissipation resistance connection tube body (17) and the outer peripheral energy dissipation resistance connection tube body (20) are provided inside the structure surrounded by the upper connection plate (3), the lower connection plate (4), the outer impact extrusion fixed connection tube (5) and the inner fixed connection tube (6 ... The energy dissipation resistance connecting cylinder (17) is formed by alternately connecting an inner cylinder inner concave section (18) and an inner cylinder outer convex section (19); the outer cylinder outer convex section (21) and an outer cylinder inner concave section (22) are alternately connected; a plurality of mixed layer built-in shock-absorbing and energy-dissipating spring structures (13) are arranged between the inner cylinder (17) and the outer cylinder (20) and filled with a main impact resistance mixed layer (10); a plurality of mixed layer built-in cavities (11) are arranged inside the main impact resistance mixed layer (10); and the interior of the mixed layer built-in cavities (11) is filled with light The energy dissipation body (12) is injected with a mass, the area between the inner fixed connection cylinder (6) and the inner peripheral energy dissipation resistance connection cylinder (17), and the area between the outer impact extrusion fixed connection cylinder (5) and the outer peripheral energy dissipation resistance connection cylinder (20) is a collision buffer energy dissipation displacement cavity (7), a displacement cavity main shock absorbing spring (8) is arranged between the outer convex section (19) of the inner peripheral cylinder and the inner fixed connection cylinder (6), and between the inner concave section (22) of the outer peripheral cylinder and the outer impact extrusion fixed connection cylinder (5), and a displacement cavity auxiliary shock absorbing spring (18) is arranged between the inner concave section (18) of the inner peripheral cylinder and the inner fixed connection cylinder (6), and between the outer convex section (21) of the outer peripheral cylinder and the outer impact extrusion fixed connection cylinder (5). 9), an active impact-driven displacement rod (14) and a passive impact-driven displacement rod (15) are alternately arranged to pass through an inner energy-dissipating resistance connection cylinder (17) and an outer energy-dissipating resistance connection cylinder (20), the end of the active impact-driven displacement rod (14) is connected to the inner wall of the outer impact extrusion fixed connection cylinder (5), and the end of the passive impact-driven displacement rod (15) is connected to the outer wall of the inner fixed connection cylinder (6), and a locking nut (16) is used to fix the active impact-driven displacement rod (14) and the passive impact-driven displacement rod (15) on both sides of the inner energy-dissipating resistance connection cylinder (17) and both sides of the outer energy-dissipating resistance connection cylinder (20) respectively; The materials used for the external impact extrusion fixed connection cylinder (5), the internal fixed connection cylinder (6), the inner peripheral energy dissipation resistance connection cylinder (17) and the outer peripheral energy dissipation resistance connection cylinder (20) are low yield point steel materials determined according to design requirements; The material used for the lightweight injected energy dissipation body (12) is foamed aluminum.
2. The active and passive dual combined bridge pier protection structure according to claim 1, characterized in that: The main impact resistant mixed layer (10) is made by mixing sand and polypropylene emulsion, and rubber particles are added therein, and the rubber particles are made of waste tires.
3. The active and passive dual combined bridge pier protection structure according to claim 1, characterized in that: The outer impact extrusion fixed connection cylinder (5), the inner fixed connection cylinder (6), the inner peripheral energy dissipation resistance connection cylinder body (17), and the outer peripheral energy dissipation resistance connection cylinder body (20) are all fixedly connected to the upper connection plate (3) and the lower connection plate (4).
4. The active and passive dual combined bridge pier protection structure according to claim 1, characterized in that: The two ends of the built-in shock-absorbing and energy-dissipating spring structure (13) in the mixed layer are connected to the outer convex section (19) of the inner cylinder and the inner concave section (22) of the outer cylinder.
5. The active and passive dual combined bridge pier protection structure according to claim 1, characterized in that: The active impact drives the displacement rod (14) to pass through the inner concave section (18) of the inner circumferential cylinder and the inner concave section (22) of the outer circumferential cylinder.
6. The active and passive dual combined bridge pier protection structure according to claim 1, characterized in that: The passive impact drives the displacement rod (15) to pass through the outer convex section (19) of the inner cylinder and the outer convex section (21) of the outer cylinder.