Noise reducing durable bridge expansion joint

Abstract

The application relates to the technical field of road and bridge facility construction, and discloses a noise-reducing durable bridge expansion joint, which comprises a first comb tooth plate and a second comb tooth plate, the first comb tooth plate and the second comb tooth plate are provided with a deformation gap therebetween, and an exhaust pipeline is arranged on the first comb tooth plate and / or the second comb tooth plate and communicates with the deformation gap. Through the technical scheme, the problem of large noise of the bridge expansion joint in the related art during use is solved.

Description

Technical Field

[0001] This invention relates to the field of road and bridge infrastructure construction technology, specifically to noise-reducing and durable bridge expansion joints. Background Technology

[0002] As is well known, the length of a bridge can change due to temperature variations, concrete shrinkage and creep, uneven settlement of the foundation, and the influence of vehicle loads, which can cause displacement at the beam ends. In order to accommodate this displacement and maintain smooth driving, bridge expansion joints, also known as expansion joints, must be installed.

[0003] Bridge expansion joints must not only compensate for the deformation between two bridge sections, but also minimize the gap to ensure a smooth ride for vehicles. Even so, vehicles inevitably generate significant noise when passing over expansion joints. The reasons for this noise are twofold: firstly, the vibration caused by the direct impact of the wheels on the expansion joint; and secondly, the instantaneous compression and decompression of the air within the gap by the wheels, which generates oscillating sound waves, known as airbursts.

[0004] Existing gaps typically contain damping devices such as waterstops and elastic plates inside the expansion joints, which can block the space inside the expansion joints, making it easy for air bursts to occur and causing noise pollution. Summary of the Invention

[0005] This invention proposes a noise-reducing and durable bridge expansion joint, which solves the problem of excessive noise in bridge expansion joints during use in related technologies.

[0006] The technical solution of the present invention is as follows: Noise-reducing and durable bridge expansion joints include: First comb plate; The second comb plate has a deformation gap between the first comb plate and the second comb plate. An exhaust pipe is disposed on the first comb plate and / or the second comb plate, and the exhaust pipe is connected to the deformation gap.

[0007] Preferred options also include: The elastic element acts on the second comb plate at one end and on the first comb plate at the other end, providing a force that makes the first comb plate flush with the second comb plate.

[0008] Preferred options also include: A liner is disposed on the first comb plate, the liner having a mounting groove, and the elastic element acts on the first comb plate through the liner; A storage box is disposed in an installation slot. The storage box has a receiving cavity that communicates with the deformation gap. The exhaust pipe on one side is connected to the deformation gap via the storage box. The storage box is used for water storage or for air circulation.

[0009] Preferably, the liner has a through hole facing the elastic member, and the storage box includes: The box body has a first opening, and the receiving cavity is located inside the box body. The first opening communicates with the deformation gap and the receiving cavity respectively. A partition is disposed within the receiving cavity, the partition dividing the receiving cavity into several flow channels, and the first opening and the through hole are both connected to the several flow channels.

[0010] Preferably, the partition includes: The partition has several pairs, and the several pairs of partitions are disposed in the receiving cavity. The several pairs of partitions are arranged at equal intervals along an axis perpendicular to the first opening, and the height of the several pairs of partitions decreases sequentially from the outside to the inside. A plurality of horizontal plates are disposed within the receiving cavity, with one horizontal plate disposed on each pair of partitions; each horizontal plate has a first opening, and the diameter of the plurality of first openings decreases sequentially along the axial direction of the first opening.

[0011] Preferably, the first opening is located at the center of the horizontal plate, and the through holes on the horizontal plate are all arranged concentrically with the first opening.

[0012] Preferably, the two partitions on each of the horizontal plates are vertically arranged on both sides of the horizontal plate, and each horizontal plate is arranged parallel to the inner wall of the box.

[0013] Preferred options also include: A fixing plate is disposed on the second comb plate and has a groove, and the elastic element is disposed in the groove; The elastic element includes: A rubber pad is disposed within the groove; An elastic gasket is disposed within the groove, and a rubber pad is located on the elastic gasket. The rubber pad slides against the liner plate and is used to seal or open the through hole.

[0014] Preferably, the exhaust pipe further includes a connecting pipe, through which the exhaust pipe communicates with the deformation gap.

[0015] Preferred options also include: Anchors are provided in a plurality of manner, with the plurality of anchors respectively disposed on the first comb plate and the second comb plate, and the exhaust pipe is disposed on the anchors.

[0016] The working principle and beneficial effects of this invention are as follows: The exhaust pipe of the present invention is connected to the deformation gap. When the first comb plate and the second comb plate approach each other, they will compress the deformation gap. At this time, the air in the deformation space will enter the exhaust pipe and be discharged outside the deformation gap, thus reducing noise. Attached Figure Description

[0017] The preferred embodiments will now be described in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of the present invention.

[0018] Figure 1 This is a schematic diagram of the bridge expansion joint structure of the present invention; Figure 2 This is a front view of the bridge expansion joint of the present invention; Figure 3 This is a schematic diagram of the structure of the first and second comb plates of the present invention after separation. Figure 4 This is a schematic diagram of the bottom structure of the expansion joint comb plate of the present invention; Figure 5 This is a schematic diagram of the first comb plate structure of the present invention; Figure 6 This is a schematic diagram of the storage box structure of the present invention; Figure 7 This is a schematic diagram of the bottom structure of the storage box of the present invention.

[0019] In the figure: 1. First comb plate; 2. Second comb plate; 3. Anchor; 4. Exhaust pipe; 5. Deformation gap; 6. Liner; 601. Mounting groove; 602. Through hole; 7. Storage box; 701. Box body; 702. First opening; 703. Horizontal plate; 704. Partition; 705. Receiving cavity; 7051. Guide channel; 706. Second opening; 8. Elastic element; 801. Fixing plate; 802. Groove; 803. Elastic gasket; 804. Rubber pad; 9. Connecting pipe. Detailed Implementation To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0020] To keep the drawings concise, each drawing only schematically shows the parts relevant to the invention; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0021] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Reference Figures 1-2 As an embodiment of the present invention, a noise-reducing and durable bridge expansion joint is proposed, comprising: a first comb plate 1; a second comb plate 2, wherein a deformation gap 5 is provided between the first comb plate 1 and the second comb plate 2; and an exhaust pipe 4, which is disposed on the first comb plate 1 and / or the second comb plate 2 and is connected to the deformation gap 5.

[0024] In the above scheme, a first comb plate 1 and a second comb plate 2 are installed in the expansion joint. The first comb plate 1 and the second comb plate 2 are staggered to form a deformation gap 5 that allows the bridge beam to expand and contract due to temperature changes or other reasons. The use of the comb plate structure helps to disperse the impact force when vehicles pass by and reduce noise generation. Exhaust pipes 4 are provided on both sides of the first comb plate 1 and the second comb plate 2. The exhaust pipes 4 are located on the first comb plate 1 or the second comb plate 2 and are connected to the deformation gap 5. This means that when vehicles pass by, any air fluctuations or noise that may be generated in the deformation gap 5 can be discharged through the exhaust pipes 4, thereby reducing aerodynamic noise and structural vibration noise and achieving the noise reduction goal.

[0025] Specifically, the bridge includes a first comb plate 1 and a second comb plate 2. The deformation gap 5 formed between these two comb plates is designed to allow for thermal expansion and contraction deformation of the bridge under temperature changes or loads, thus maintaining the stability of the bridge structure. Additionally, the exhaust pipe 4 is directly installed on either the first comb plate 1 or the second comb plate 2 and communicates with the deformation gap 5. The exhaust pipe 4 eliminates air pressure fluctuations generated within the deformation gap 5 due to vehicle passage or other reasons, thereby reducing aerodynamic noise and achieving a noise reduction effect.

[0026] Reference Figures 3-5 Furthermore, it also includes: an elastic element 8, one end of which acts on the second comb plate 2 and the other end of which acts on the first comb plate 1, providing a force that makes the first comb plate 1 and the second comb plate 2 flush; it also includes: a liner 6, which is disposed on the first comb plate 1, the liner 6 having a mounting groove 601, the elastic element 8 acting on the first comb plate 1 through the liner 6; and a storage box 7, which is disposed in the mounting groove 601, the storage box 7 having a receiving cavity 705, the receiving cavity 705 communicating with the deformation gap 5, and an exhaust pipe 4 on one side communicating with the deformation gap 5 through the storage box 7, the storage box 7 being used for water storage or for air circulation.

[0027] In the above scheme, the elastic element 8 is set on the second comb plate 2 and slides in contact with the bottom surface of the liner 6. The sliding contact between the two enhances the flexibility and adaptability of the expansion joint, allowing the first comb plate 1 and the second comb plate 2 to move freely within a certain range, while reducing impact force and improving durability. The storage box 7 is installed in the mounting groove 601 of the liner 6, and the storage box 7 has a receiving cavity 705 communicating with the deformation gap 5. The storage box 7 has two functions: it can be used to collect and store moisture or air that may seep in from the deformation gap 5, preventing moisture from corroding the expansion joint structure and extending the service life of the expansion device. It can also serve as an air circulation channel. The communication between the receiving cavity 705 and the deformation gap 5 helps air circulation and assists the exhaust pipe 4 to achieve better noise reduction.

[0028] Reference Figures 5-7 Furthermore, the liner 6 has a through hole 602 facing the elastic member 8. The storage box 7 includes: a box body 701 with a first opening 702, a receiving cavity 705 located inside the box body 701, the first opening 702 communicating with the deformation gap 5 and the receiving cavity 705 respectively; a partition 704 disposed inside the receiving cavity 705, the partition 704 dividing the receiving cavity 705 into several flow channels 7051, the first opening 702 and the through hole 602 communicating with the several flow channels 7051, and the bottom of the box body 701 having a second opening 706, through which water or air inside the receiving cavity 705 can be directly discharged.

[0029] In the above scheme, the liner 6 is provided with a through hole 602, which faces the elastic member 8, and is intended to accommodate the movement of the elastic member 8 and the air or moisture flow requirements within the deformation gap 5. The storage box 7 specifically includes: a box body 701: the box body 701 has an internal receiving cavity 705, and a first opening 702 is provided on one side of the box body 701. This first opening 702 plays a crucial role in connecting the deformation gap 5 and the receiving cavity 705, allowing air or moisture to flow into the storage box 7 from the deformation gap 5. A partition 704: a partition 704 is provided inside the receiving cavity 705, dividing the originally single receiving cavity 705 into several flow channels 7051. This has the advantage of guiding and dispersing substances (such as moisture or airflow) flowing into the storage box 7, distributing them evenly through multiple flow channels 7051, thereby improving storage and drainage efficiency, facilitating pressure equalization, and further reducing noise generation. It not only enhances the expansion joint's ability to handle air pressure fluctuations and moisture leakage within the deformation gap 5, but also optimizes the internal structure of the storage box 7, enabling the entire expansion joint device to effectively reduce noise and minimize the impact of moisture on the bridge structure while ensuring durability.

[0030] Furthermore, the partition 704 includes: several pairs of partitions 704, which are disposed within the receiving cavity 705, and are equally spaced along an axis perpendicular to the first opening 702, with the height of the pairs of partitions 704 decreasing sequentially from the outside to the inside; and several horizontal plates 703, which are disposed within the receiving cavity 705, with one horizontal plate 703 on each pair of partitions 704; each horizontal plate 703 has a first opening 702, and the diameter of the several first openings 702 decreases sequentially along the axis of the first opening 702. The first opening 702 is located at the center of the horizontal plate 703, and the through holes 602 on the several horizontal plates 703 are concentrically arranged with the first opening 702.

[0031] In the above scheme, several pairs of partitions 704 are arranged inside the receiving cavity 705, characterized by being evenly spaced along a direction perpendicular to the axis of the first opening 702. The height of each pair of partitions 704 gradually decreases from the outside to the inside. This stepped design helps to form multi-level flow channels 7051, allowing the inflowing medium (such as water or gas) to gradually slow down its flow rate, achieving a smoother and more orderly flow. Horizontal plates 703: Several horizontal plates 703 are also provided inside the receiving cavity 705, ensuring that each pair of partitions 704 is equipped with one horizontal plate 703, enhancing the overall structural stability and the guiding function of the fluid. Specifically, each horizontal plate 703 also has a first opening 702, and the diameter of these first openings 702 is designed to decrease along the axis of the first opening 702 on the top surface of the box 701. For example, when it rains, rainwater can be temporarily stored in the box 701. Because the elastic element 8 will generate heat when it rubs against the liner 6, the water can be stored in the box 701 and then stored on the elastic element 8 to cool it down.

[0032] Furthermore, the two partitions 704 on each horizontal plate 703 are vertically arranged on both sides of the horizontal plate 703, and each horizontal plate 703 is arranged parallel to the inner wall of the box 701. The two partitions 704 on each horizontal plate 703 are vertically arranged on both sides of the horizontal plate 703, meaning that the partitions 704 and the horizontal plate 703 form a right-angle structure. This vertical arrangement helps to form regular flow channels 7051 and ensures that the flow direction of fluid or gas is effectively controlled when passing through the horizontal plate 703. At the same time, each horizontal plate 703 is arranged parallel to the inner wall of the storage box 7, which means that the horizontal plate 703 is placed horizontally within the entire receiving cavity 705. This design ensures maximum space utilization within the entire storage box 7.

[0033] Furthermore, it also includes: a fixing plate 801, which is disposed on the second comb plate 2 and has a groove 802, and an elastic element 8 is disposed in the groove 802; the elastic element 8 includes: a rubber pad 804, which is disposed in the groove 802; an elastic gasket 803, which is disposed in the groove 802, the rubber pad 804 is located on the elastic gasket 803, the rubber pad 804 slides against the liner plate 6, and the rubber pad 804 is used to block or open the through hole 602.

[0034] In the above scheme, the fixing plate 801 is set on the second comb plate 2 and has a groove 802 structure. This groove 802 provides installation space and a fixed base for the elastic element 8. The elastic element 8 is installed in the groove 802 of the fixing plate 801, specifically including a rubber pad 804. The rubber pad 804 is set inside the groove 802 and has good elasticity and sealing performance, can adapt to a certain degree of deformation, and provides a cushioning effect. The elastic gasket 803 is also set in the groove 802, located below the rubber pad 804, and together with the rubber pad 804, it undertakes the functions of contact and cushioning. Working principle: When the rubber pad 804 is subjected to force, it can slide and abut against the through hole 602 on the liner plate 6. Depending on the actual situation, the rubber pad 804 can seal the through hole 602 to prevent moisture or air from passing through directly; under appropriate conditions, the rubber pad 804 can also open the through hole 602 to allow moisture or air to pass through. This design allows the elastic element 8 to flexibly adjust the communication between the deformation gap 5 and the storage box 7. When the rubber pad 804 rubs against the liner 6, the through hole 602 is opened, and water can flow out through the through hole 602 and flow over the elastic pad 803 and the rubber pad 804 to cool them down.

[0035] Furthermore, the exhaust pipe 4 also has a connecting pipe 9, through which the exhaust pipe 4 is connected to the deformation gap 5. The exhaust pipe 4 not only establishes a direct connection with the deformation gap 5 on the first comb plate 1 and / or the second comb plate 2, but also further strengthens the connection between the two through the added connecting pipe 9. As part of the exhaust pipe 4, the connecting pipe 9 allows gas or moisture to be transported more smoothly from the deformation gap 5 into the exhaust pipe 4, and then discharged from the expansion joint, achieving the purpose of effectively reducing noise and maintaining the stability of the environment inside the expansion joint.

[0036] Furthermore, it also includes: anchors 3, of which several are respectively disposed on the first comb plate 1 and the second comb plate 2, and an exhaust pipe 4 is disposed on the anchors 3. These anchors 3 are respectively installed on the first comb plate 1 and the second comb plate 2 to reinforce the connection between the comb plate and the main structure of the bridge, ensuring the stability of the expansion joint under vehicle loads and environmental influences. In addition, the exhaust pipe 4 is not directly installed on the comb plate, but is disposed on the comb plate through the anchors 3. The advantage of this design is that it improves the stability of the exhaust pipe 4 installation, ensuring that the exhaust pipe 4 can remain in place when the bridge is subjected to stress and deformation, and will not fail or be damaged due to minor deformation of the bridge. Moreover, the exhaust pipe 4 can discharge the compressed air in the deformation gap 5, reducing the occurrence of air bursts, thereby reducing noise.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A noise-reducing and durable bridge expansion joint, characterized in that, include: First comb plate (1); The second comb plate (2) has a deformation gap (5) between the first comb plate (1) and the second comb plate (2). An exhaust pipe (4) is provided on the first comb plate (1) and / or the second comb plate (2), and the exhaust pipe (4) is connected to the deformation gap (5); Also includes: The elastic element (8) acts on the second comb plate (2) at one end and on the first comb plate (1) at the other end, providing a force that makes the first comb plate (1) and the second comb plate (2) flush. Also includes: A liner (6) is disposed on the first comb plate (1), the liner (6) having a mounting groove (601), and the elastic element acting on the first comb plate through the liner; Storage box (7) is disposed in mounting groove (601). The storage box (7) has a receiving cavity (705) which is connected to the deformation gap (5). The exhaust pipe (4) on one side is connected to the deformation gap (5) through the storage box (7). The storage box (7) is used for water storage or for air circulation. The liner (6) has a through hole (602) facing the elastic member (8), and the storage box (7) includes: The box body (701) has a first opening (702), and the receiving cavity (705) is located inside the box body (701). The first opening (702) is connected to the deformation gap (5) and the receiving cavity (705) respectively. A partition (704) is disposed in the receiving cavity, the partition (704) dividing the receiving cavity into several flow channels, and the first opening and the through hole are both connected to several flow channels.

2. The noise-reducing and durable bridge expansion joint according to claim 1, characterized in that, The partition (704) has several pairs, and several pairs of the partition (704) are disposed in the receiving cavity (705). The several pairs of the partition (704) are arranged at equal intervals along the axial direction perpendicular to the first opening (702), and the height of the several pairs of the partition (704) decreases sequentially from the outside to the inside. A plurality of horizontal plates (703) are provided in the receiving cavity (705), and each pair of partitions (704) is provided with one horizontal plate (703); each horizontal plate (703) has a first opening (702), and the diameter of the plurality of first openings (702) decreases sequentially along the axial direction of the first opening (702).

3. The noise-reducing and durable bridge expansion joint according to claim 2, characterized in that, The first opening (702) is located at the center of the horizontal plate (703), and the first openings (702) on several horizontal plates (703) and the first openings (702) on the box body (701) are all arranged concentrically.

4. The noise-reducing and durable bridge expansion joint according to claim 3, characterized in that, The two partitions (704) on each of the horizontal plates (703) are vertically arranged on both sides of the horizontal plate (703), and each horizontal plate (703) is arranged parallel to the inner wall of the box body (701).

5. The noise-reducing and durable bridge expansion joint according to claim 1, characterized in that, Also includes: A fixing plate (801) is disposed on the second comb plate (2) and has a groove (802), wherein the elastic element (8) is disposed in the groove (802); The elastic element (8) includes: A rubber pad (804) is disposed within the groove (802); An elastic gasket (803) is disposed in the groove (802), and a rubber pad (804) is located on the elastic gasket (803). The rubber pad (804) slides against the liner (6) and is used to block or open the through hole (602).

6. The noise-reducing and durable bridge expansion joint according to claim 1, characterized in that, The exhaust pipe (4) also has a connecting pipe (9), through which the exhaust pipe (4) is connected to the deformation gap (5).

7. The noise-reducing and durable bridge expansion joint according to claim 1, characterized in that, Also includes: Anchors (3) are provided in a plurality of them, and the plurality of anchors (3) are respectively provided on the first comb plate (1) and the second comb plate (2), and the exhaust pipe (4) is provided on the anchors (3).

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