An anti-collision sound barrier structure with elastic self-recovery function

Abstract

The present invention discloses an anti-collision sound barrier structure with an elastic self-recovery function, comprising an elastic base connector, an anti-collision beam, an elastic cross brace, a column, a noise reduction plate, and a concrete base. The elastic base connector is a sandwich structure with flange plates at both ends and a tension spring in the middle. The elastic base connector is fixed to the top of the concrete base through the flange plate of the lower layer and anchor bolts. The column is welded and fixed to the upper surface of the flange plate of the upper layer of the elastic base connector. The cross-section of the column is an arc convex toward the roadway side. One end of the elastic cross brace is anchored to the column, and the other end is connected to the anti-collision beam. The noise reduction plate is assembled between the columns. The anti-collision beam is arranged to protrude in front of the noise reduction plate, and the concrete base is anchored to the foundation. The structural sound barrier of the present invention has an anti-collision guiding function, and the elastic design can achieve self-recovery, effectively avoiding the influence of bridge vibration on the foundation anchoring strength. The construction is simple and the project cost is saved.

Description

Technical Field

[0001] The present invention belongs to the field of traffic noise control using sound barriers, and in particular relates to an anti-collision sound barrier structure with elastic self-recovery function. Background Art

[0002] To promote national economic development and facilitate public transportation, my country's road construction has been rapidly developing. Faced with increasing mileage and limited construction space, highway route design is increasingly requiring sections of roads to pass through or near residential areas. As road network levels and traffic conditions continue to improve, vehicle speeds and volumes are increasing, and the resulting traffic noise radiating from both sides of the highway is also becoming increasingly severe. According to national environmental monitoring results, approximately 17% of cities experience moderate pollution from road traffic noise, while 49% experience light pollution. This has had a lasting negative impact on people's lives and work, and has become a prominent environmental issue.

[0003] As a relatively simple, effective, and economical noise reduction measure, sound barriers are installed between the noise source and the receiving point. Using sound-absorbing, sound-insulating, or a combination of these materials, they significantly attenuate sound waves, thereby reducing the noise impact within a specific area of ​​the receiving point. The "Highway Environmental Protection Design Code" (JTG B04-2010) also stipulates that highway projects should prevent and control traffic noise pollution. Sound barriers can be used for prevention and control when the highway is close to environmentally sensitive areas such as schools, hospitals, nursing homes, and residential areas, where land use is restricted, and when ambient noise exceeds the standard by more than 5dB.

[0004] At present, sound barriers have become an important facility and have been widely used on roads, but the problems exposed during their application are also receiving more and more attention.

[0005] Currently, sound barriers are typically installed on both sides of roads, relatively close to guardrails. Guardrails are designed to absorb collision energy by deforming or causing vehicles to rise after an accident, thereby mitigating damage. However, this creates a problem of functional interference between the two. The proximity of the barrier surface to the guardrail's impact surface makes it highly susceptible to direct collisions between uncontrolled vehicles (especially large ones). Furthermore, to withstand wind loads, the columns are typically strong and rigid. Vehicles that collide with the guardrails are unable to steer, potentially causing serious stumbling or even being pierced by the barrier structure. Furthermore, the noise reduction panel material is also susceptible to deformation and falling from the bridge during collisions.

[0006] Some of them are integrated with guardrails, especially bridge sections. Independent foundations require larger space for installation, which will inevitably increase the width of the main structure of the bridge, increase the cost of engineering construction, poor economy, and a relatively long construction period. Independent sound barriers are only suitable for newly built bridges or existing bridges with sufficient width (very few). They are not applicable to most existing bridges and have poor universality.

[0007] On the other hand, when vehicles travel on the bridge, they will generate necessary vibrations, and when the vibration force is transmitted to the solid foundation of the sound barrier, it will cause mutual influence. The direct impact is that it will cause the anchor bolts to loosen over time, posing a hidden danger to the foundation anchoring strength of the sound barrier.

[0008] The above analysis shows that the installation of sound barriers in my country should not only consider the sound insulation and noise reduction functions, but also the safety of the sound barriers. Based on factors such as the noise control function of the sound barrier, impact resistance, economy, and construction convenience, the inventors have proposed an anti-collision sound barrier structure with elastic self-recovery function. Through elastic connection, it solves problems such as the sound barrier surface being close to the guardrail collision surface, the solid foundation being detached after impact, and the long-term loosening of anchor bolts, thereby meeting the safety protection requirements of highway operations. Summary of the Invention

[0009] The purpose of the present invention is to provide an anti-collision sound barrier structure with elastic self-recovery function to solve the current problem of sound barrier safety setting.

[0010] To achieve the above technical objectives, the technical solution of the present invention is implemented as follows:

[0011] A collision-proof sound barrier structure with elastic self-recovery function, comprising an elastic base connector, an anti-collision beam, an elastic cross brace, a column, a noise reduction plate, and a concrete base. The elastic base connector comprises a tension spring and a flange plate. The elastic base connector is a sandwich structure with flange plates at both ends and a tension spring in the middle. The elastic base connector is fixed to the top of the concrete base through the lower flange plate and anchor bolts, and is arranged at intervals. The columns are welded and fixed to the upper flange plate of the elastic base connector. The cross-sectional shape of the column is an arc convex toward the lane side. One end of the elastic cross brace is anchored to the column, and the other end is connected to the collision-proof beam. The collision-proof beam is vertically arranged in several rows. The noise reduction plate is an independent block structure. The noise reduction plate is assembled between the columns to form a closed surface. The collision-proof beam is arranged in front of the noise reduction plate, and the concrete base is anchored to the foundation.

[0012] Furthermore, the elastic base connector also includes an anti-slip limit tube, which is welded to the bottom of the flange plate on the upper layer of the elastic base connector. The outer diameter of the anti-slip limit tube is smaller than that of the tension spring. The anti-slip limit tube is inserted into the hollow of the tension spring. The distance between the end of the anti-slip limit tube and the flange plate on the lower layer is greater than 2 cm.

[0013] Furthermore, the cross-sectional shape of the anti-collision beam and the anti-slip limiting tube is a round tube, a rectangular tube, or a special-shaped tube.

[0014] Furthermore, the elastic cross brace is composed of an inner sleeve, an outer sleeve, a compression spring, and a crossbeam connector. The inner sleeve and the outer sleeve are steel pipes with openings at both ends. One end of the inner sleeve is opened and welded with a sealing plate, and one end of the outer sleeve is opened and welded with a crossbeam connector. The outer diameter of the compression spring is smaller than that of the inner sleeve. The compression spring is inserted into the inner sleeve, and the open end of the inner sleeve is inserted into the outer sleeve. That is to say, the compression spring is arranged in both the inner sleeve and the outer sleeve.

[0015] Furthermore, both the inner sleeve and the outer sleeve are provided with through-limiting holes, which are anchored by limiting bolts, limiting the relative displacement of the two so that they can only shrink inwards but cannot stretch outwards.

[0016] Furthermore, the inner sleeve welding sealing plate end is welded to the column, and the outer sleeve welding beam connector end is connected to the anti-collision beam bolt.

[0017] Furthermore, in order to simultaneously match the arc-shaped structure of the column and the flush collision surface of the anti-collision beam, the transverse width of the elastic cross brace gradually decreases from top to bottom, and the lengths of the inner sleeve, outer sleeve, and compression spring also gradually shorten.

[0018] Furthermore, convex-shaped bayonet holes are provided on both sides of the noise reduction plate, the convex-shaped bayonet holes are embedded in the embedding grooves formed by the columns, and are connected at the sides by bolts.

[0019] Furthermore, the anchor bolts are anchored in the concrete base by pre-embedding or planting reinforcement.

[0020] Furthermore, the force-deformation principle is as follows: when a vehicle collides with the structure of the present invention, a collision force is generated. The anti-collision beam is arranged at the front and first bears a large deformation and energy absorption. The anti-collision beam compresses the elastic cross brace at the back. The elastic cross brace passes through the space of the compression component, and the internal compression spring is forced to deform and absorb energy. The remaining collision force is shared by the column and the elastic base connecting member. The column absorbs energy through the deformation of the elastic base connecting member, and the column tilts toward the outside of the lane. At this time, mutually restrained plastic deformation is formed between the various components.

[0021] After removing the anti-collision beam with large deformation, the column is restored to its original setting state through the elastic foundation connector, and the elastic cross brace is restored to its original setting state through the compression spring. Except for the anti-collision beam, the connection status between the components remains unchanged.

[0022] After adopting the above technical solution, the present invention has the following beneficial effects:

[0023] (1) An anti-collision beam is set on the front side of the sound barrier column, and the column adopts an arc-shaped design. On the basis of ensuring its normal noise control function, it can guide vehicles normally and effectively reduce the risk of vehicle stumbling;

[0024] (2) The sound barrier is designed with elastic self-recovery function, so that it can deform backwards to absorb energy after being hit, thereby increasing the distance between the vehicle and the sound barrier and effectively reducing the risk of the sound barrier component falling off the bridge. Moreover, it does not need to be replaced and can self-recover to its initial setting state.

[0025] (3) The sound barrier can realize the anti-collision and guidance function, which can omit the installation of highway guardrails and greatly save the construction cost;

[0026] (4) Reduce the number of guardrail construction steps, make construction convenient and fast, and save construction time;

[0027] (5) The elastic foundation connection of the sound barrier can effectively avoid the adverse effects of bridge vibration on the anchoring strength of the solid foundation;

[0028] (6) Reduce the number of guardrails, reduce the permanent load on the bridge, and ensure the safety margin of the load on the main structure of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the embodiments:

[0030] Figure 1 This is an example of a structural cross-sectional view of the present invention;

[0031] Figure 2 This is an example of a front view of the elastic base connector of the present invention;

[0032] Figure 3 This is an example of a front view of the elastic cross brace of the present invention;

[0033] Figure 4 This is an example of a top view of the elastic cross brace of the present invention;

[0034] Figure 5 This is an example of a top view of the assembly position of the noise reduction plate of the present invention.

[0035] Figure 6 This is an example diagram of the elastic self-recovery principle of the present invention.

[0036] Reference numerals:

[0037] 1. Elastic foundation connector; 2. Anti-collision beam; 3. Elastic cross brace; 4. Column; 5. Noise reduction plate; 6. Concrete base; 7. Tension spring; 8. Flange plate; 9. Anchor bolt; 10. Foundation; 11. Anti-slip limit tube; 12. Inner sleeve; 13. Outer sleeve; 14. Compression spring; 15. Beam connector; 16. Cover plate; 17. Limit hole; 18. Limit bolt; 19. Convex bayonet; 20. Fixing groove; 21. Vehicle. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below with reference to the examples and specific implementation methods. However, this should not be understood as limiting the scope of the present invention to the following examples, as all technologies implemented based on the present invention fall within the scope of the present invention.

[0039] like Figure 1 The figure shows an example of the overall structure of the present invention. A collision-proof sound barrier structure with elastic self-recovery function, comprising an elastic foundation connector 1, an anti-collision beam 2, an elastic cross brace 3, a column 4, a noise reduction plate 5, and a concrete base 6. The elastic foundation connector 1 comprises a tension spring 7 and a flange plate 8. The elastic foundation connector 1 is a sandwich structure with flange plates 8 at both ends and a tension spring 7 in the middle. The elastic foundation connector 1 is fixed to the top of the concrete base 6 through the lower flange plate 8 and anchor bolts 9, and is arranged at intervals. The column 4 is welded and fixed to the upper flange plate 8 of the elastic foundation connector 1. The cross-sectional shape of the column 4 is an arc convex toward the lane side. One end of the elastic cross brace 3 is anchored to the column 4, and the other end is connected to the collision-proof beam 2. The collision-proof beam 2 is vertically arranged in several rows. The noise reduction plate 5 is an independent block structure. The noise reduction plate 5 is assembled between the columns 4 to form a closed surface. The anti-collision beam 2 is arranged in front of the noise reduction plate 5, and the concrete base 6 is anchored to the foundation 10.

[0040] like Figure 2 The figure shows an example of an elastic base connector according to the present invention. The elastic base connector 1 includes a tension spring 7 and a flange plate 8. The elastic base connector 1 is a sandwich structure with flange plates 8 at both ends and a tension spring 7 in the middle. The elastic base connector 1 also includes an anti-slip limit tube 11, which is welded to the bottom of the flange plate 8 on the upper layer of the elastic base connector 1. The outer diameter of the anti-slip limit tube 11 is smaller than that of the tension spring 7. The anti-slip limit tube 11 is inserted into the hollow of the tension spring 7, and the distance between the end of the anti-slip limit tube 11 and the flange plate 8 on the lower layer is greater than 2 cm.

[0041] like Figure 3-4The figure shows an example of an elastic cross brace according to the present invention. The elastic cross brace 3 comprises an inner sleeve 12, an outer sleeve 13, a compression spring 14, and a crossbeam connector 15. The inner sleeve 12 and the outer sleeve 13 are steel pipes with both ends open. One end of the inner sleeve 12 is welded to a sealing plate 16, while the other end of the outer sleeve 13 is welded to the crossbeam connector 15. The compression spring 14 has a smaller outer diameter than the inner sleeve 12. The compression spring 14 is inserted into the inner sleeve 12, and the open end of the inner sleeve 12 is inserted into the outer sleeve 13. In other words, the compression spring 14 is disposed within both the inner sleeve 12 and the outer sleeve 13.

[0042] The inner sleeve 12 and the outer sleeve 13 are both provided with a through-limiting hole 17 , which is anchored by a limiting bolt 18 , limiting the relative displacement of the two so that they can only shrink inwards but cannot stretch outwards.

[0043] The end of the inner sleeve 12 welded with the sealing plate 16 is welded to the column 4 , and the end of the outer sleeve 13 welded with the beam connector 15 is bolted to the anti-collision beam 2 .

[0044] In order to match the arc-shaped structure of the column 4 and the flat collision surface of the anti-collision beam 2 at the same time, the transverse width of the elastic cross brace 3 gradually decreases from top to bottom, and the lengths of the inner sleeve 12, the outer sleeve 13 and the compression spring 14 also gradually shorten.

[0045] like Figure 5 The figure shows an example of the assembly position of the noise reduction plate of the present invention. The noise reduction plate 5 is an independent block structure, which is assembled between the columns 4 to form a closed surface. The noise reduction plate 5 is provided with convex-shaped bayonet holes 19 on both sides. The convex-shaped bayonet holes 18 are embedded in the embedding grooves 20 formed in the columns 4 and are connected to the sides by bolts.

[0046] The cross-section of the anti-collision beam 2 is a rectangular tube, and the cross-section of the anti-slip limiting tube 11 is a circular tube.

[0047] The anchor bolts 9 are anchored in the concrete base 6 in a pre-embedded manner.

[0048] like Figure 6 The figure below illustrates the elastic self-recovery principle of the present invention. Vehicle 21 collides with the structure of the present invention, generating a collision force. The anti-collision beam 2, located at the front end, initially experiences the greater collision force and deforms to absorb energy. The anti-collision beam 2 compresses the elastic cross brace 3 at the back. This compresses the space between the components, causing the internal compression spring 14 to deform and absorb energy. The remaining collision force is shared by the column 4 and the elastic base connector 1. The column 4 absorbs energy through the deformation of the elastic base connector 1, tilting toward the outside of the roadway. At this point, mutually constrained plastic deformation occurs between the components.

[0049] After removing the anti-collision beam 2 with a large deformation, the column 4 is restored to its original setting state through the elastic base connector 1, and the elastic cross brace 3 is restored to its original setting state through the compression spring 14. Except for the anti-collision beam 2, the connection status between the components remains unchanged.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An anti-collision sound barrier structure with elastic self-recovery function, comprising an elastic base connector (1), an anti-collision beam (2), an elastic cross brace (3), a column (4), a noise reduction plate (5), and a concrete base (6), characterized in that: The elastic foundation connector (1) includes a tension spring (7) and a flange plate (8). The elastic foundation connector (1) is a sandwich structure with flange plates (8) at both ends and a tension spring (7) in the middle. The elastic foundation connector (1) is fixed to the top of the concrete base (6) through the lower flange plate (8) and anchor bolts (9), and is arranged at intervals. The column (4) is welded and fixed to the upper flange plate (8) of the elastic foundation connector (1). The cross-section of the column (4) is an arc convex toward the lane side. One end of the elastic cross brace (3) is anchored to the column (4), and the other end is connected to the anti-collision beam (2). The anti-collision beam (2) is vertically arranged in several rows. The noise reduction plate (5) is an independent block structure. The noise reduction plate (5) is assembled between the columns (4) to form a closed surface. The anti-collision beam (2) is arranged in front of the noise reduction plate (5). The concrete base (6) is anchored to the foundation (10). The elastic cross brace (3) is composed of an inner sleeve (12), an outer sleeve (13), a compression spring (14), and a crossbeam connector (15). The inner sleeve (12) and the outer sleeve (13) are steel pipes with both ends open. One end of the inner sleeve (12) is open and welded with a sealing plate (16). One end of the outer sleeve (13) is open and welded with a crossbeam connector (15). The outer diameter of the compression spring (14) is smaller than that of the inner sleeve (12). The compression spring (14) is inserted into the inner sleeve (12), and the open end of the inner sleeve (12) is inserted into the outer sleeve (13). That is, the compression spring (14) is simultaneously arranged in the inner sleeve (12) and the outer sleeve (13); In order to simultaneously match the arc-shaped structure of the column (4) and the flush collision surface of the anti-collision beam (2), the transverse width of the elastic cross brace (3) gradually decreases from top to bottom, and the lengths of the inner sleeve (12), the outer sleeve (13), and the compression spring (14) also gradually shorten.

2. The anti-collision sound barrier structure with elastic self-recovery function according to claim 1, characterized in that: The elastic base connector (1) further includes an anti-slip limit tube (11), which is welded to the bottom of the flange plate (8) on the upper layer of the elastic base connector (1). The outer diameter of the anti-slip limit tube (11) is smaller than that of the tension spring (7). The anti-slip limit tube (11) is inserted into the hollow of the tension spring (7), and the distance between the end of the anti-slip limit tube (11) and the flange plate (8) on the lower layer is greater than 2 cm.

3. The anti-collision sound barrier structure with elastic self-recovery function according to claim 1 or 2, characterized in that: The cross-sectional shapes of the anti-collision beam (2) and the anti-slip limit tube (11) are circular tubes, rectangular tubes, or special-shaped tubes.

4. The anti-collision sound barrier structure with elastic self-recovery function according to claim 1, characterized in that: The inner sleeve (12) and the outer sleeve (13) are both provided with a through-hole (17), and the limit hole (17) is anchored by a limit bolt (18), limiting the relative displacement of the two so that they can only shrink inwards and cannot stretch outwards.

5. The anti-collision sound barrier structure with elastic self-recovery function according to claim 1 is characterized by: The end of the inner sleeve (12) welded to the sealing plate (16) is welded to the column (4), and the end of the outer sleeve (13) welded to the crossbeam connector (15) is bolted to the anti-collision crossbeam (2).

6. The anti-collision sound barrier structure with elastic self-recovery function according to claim 1, characterized in that: Convex-shaped bayonet holes (19) are provided on both sides of the noise reduction plate (5), and the convex-shaped bayonet holes (19) are embedded in the embedding grooves (20) formed by the columns (4) and connected at the sides by bolts.

7. The anti-collision sound barrier structure with elastic self-recovery function according to claim 1, characterized in that: The anchor bolts (9) are anchored in the concrete base (6) by pre-embedding or planting reinforcement.

8. The anti-collision sound barrier structure with elastic self-recovery function according to claim 1, characterized in that: The force-bearing deformation principle is as follows: the collision structure of the vehicle (21) forms a collision force, the anti-collision beam (2) is arranged at the front side, first bears a larger collision force and deforms to absorb energy, the anti-collision beam (2) compresses the back elastic cross brace (3), the elastic cross brace (3) compresses the component space, and the internal compression spring (14) is subjected to force, deforms and absorbs energy, and the remaining collision force is jointly borne by the column (4) and the elastic base connecting member (1), the column (4) absorbs energy through the deformation of the elastic base connecting member (1), and the column (4) tilts toward the outside of the lane, and at this time, mutually constrained plastic deformation is formed between the components; After the anti-collision beam (2) with a large deformation is removed, the column (4) is restored to its initial setting state through the elastic foundation connection member (1), and the elastic cross brace (3) is restored to its initial setting state through the compression spring (14). Except for the anti-collision beam (2), the connection state between the components remains unchanged.

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