An integral anchored noise-reducing comb-type bridge expansion joint and its installation method

Abstract

This invention relates to the field of bridge expansion joints, and more particularly to an integrally anchored noise-reducing comb-type bridge expansion joint and its installation method. It comprises a left comb plate (2) and a right comb plate (7) located on both sides of the bridge expansion joint, the left comb plate (2) and the right comb plate (7) being arranged in an alternating configuration. The key feature is that the lower parts of both the left comb plate (2) and the right comb plate (7) are connected to a supporting anchor plate (1) and a supporting vertical plate (4); the supporting anchor plate (1) is a hollow structure with a single-sided notch, and the notched side connects to the supporting vertical plate (4) to form a rectangular groove, the upper part of which is connected to a sliding pad (3); the lower parts of the supporting vertical plates (4) on both sides of the expansion joint are connected to the upper part of the casting template with a supporting waterstop (5), and the upper part of the supporting waterstop (5) is provided with an elastic sound-absorbing material (6).

Description

Technical Field

[0001] This invention relates to the field of bridge expansion joints, and more particularly to an integrally anchored, noise-reducing comb-type bridge expansion joint and its installation method. Background Technology

[0002] JT / T 1270.3-2019 Highway Bridge Comb Plate Expansion Joint Part 3: Integral Anchored Expansion Joint demonstrates that integral anchored expansion joints have been applied on a large scale in my country's road and bridge systems.

[0003] The newer design of the current integrated anchored telescopic device involves welding a steel plate below the comb teeth, which provides some support and also helps prevent dust accumulation.

[0004] In the actual manufacturing process, the following problems may easily occur:

[0005] During the concrete grouting process, some concrete will enter the gaps between the comb teeth.

[0006] Welding the underlying steel plate structure is time-consuming and labor-intensive. Summary of the Invention

[0007] Purpose of the invention: To provide a more effective integrated anchoring noise reduction comb-type bridge expansion joint and installation method, the specific purpose of which is described in the specific implementation section for several substantial technical effects.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] An integrally anchored noise-reducing comb-type bridge expansion joint device includes a left comb plate 2 and a right comb plate 7 located on both sides of the bridge expansion joint. The left comb plate 2 and the right comb plate 7 are arranged in an alternating manner. The device is characterized in that: the lower parts of the left comb plate 2 and the right comb plate 7 are connected to a supporting anchor plate 1 and a supporting upright plate 4; the supporting anchor plate 1 is a hollow structure with a single-sided notch, and the single-sided notch side is connected to the supporting upright plate 4 to form a rectangular slot, and the upper part of the rectangular slot is connected to a sliding pad 3; the lower parts of the supporting upright plates 4 on both sides of the expansion joint are connected to the upper part of the casting template with a supporting waterstop 5, and the upper part of the supporting waterstop 5 is provided with an elastic sound-absorbing material 6.

[0010] A further technical solution of the present invention is that the supporting anchor plate 1 comprises a plurality of such supporting anchor plates 1 and the plurality of supporting anchor plates 1 are evenly arranged along the length direction of the supporting upright plate 4.

[0011] A further technical solution of the present invention is that the shape of the rectangular groove of the supporting anchor plate 1 matches the shape of the sliding pad plate 3.

[0012] A further technical solution of the present invention is that the sliding pad 3 has the same length as the left comb plate 2 and the right comb plate 7.

[0013] A further technical solution of the present invention is that the lengths of the supporting upright plate 4 and the sliding pad plate 3 are the same.

[0014] A further technical solution of the present invention is that the supporting waterstop 5 is an elastic pressure-bearing structure, and its material is canvas, rubber or high-elastic stainless steel.

[0015] A further technical solution of the present invention is that the elastic sound-absorbing material 6 is a cast-in-place high-performance polyurethane or EVA foam elastic sound-absorbing material.

[0016] An installation method for an integrally anchored, noise-reducing, comb-type bridge expansion joint includes the following steps:

[0017] 1. A support plate 4 is connected to the lower part of the left comb plate 2. A sliding pad 3 is attached to the lower part of the left comb plate 2 on the left side of the support plate 4. Multiple support anchor plates 1 are evenly arranged on the left side of the support plate 4. The left comb plate 2, sliding pad 3 and support plate 4 of the support anchor plate 1 are attached to each other.

[0018] 2. A support plate 4 is connected to the lower part of the right comb plate 7. A sliding pad 3 is attached to the lower part of the right comb plate 7 on the right side of the support plate 4. Multiple support anchor plates 1 are evenly arranged on the right side of the support plate 4. The right comb plate 7, sliding pad 3 and support plate 4 are attached to the support anchor plate 1.

[0019] 3. Based on the depth of the reserved groove of the bridge expansion joint, make the casting template, place the casting template on both sides of the expansion joint, and connect it with the pre-embedded steel bars of the beam using tied steel bars;

[0020] 4. Connect the supporting waterstop strip to the pouring formwork 5, ensuring a firm connection that does not come off;

[0021] 5. Use hoisting equipment to place the integral connecting components of the already connected left comb plate 2 and right comb plate 7 into the reserved slots on both sides of the expansion joint, ensuring that the left comb plate 2 and right comb plate 7 are staggered and that their upper surfaces are on the same horizontal plane as the bridge deck.

[0022] 6. Connect multiple pre-embedded steel bars in the beams to multiple support anchor plates 1 to ensure a firm connection. Insert longitudinal steel bars into the hollow part of the support anchor plate 1. The length of the longitudinal steel bars is the same as that of the expansion joint.

[0023] 7. Pour steel fiber or polypropylene fiber concrete that meets the strength requirements into the reserved groove of the bridge expansion joint below the left comb plate 2 and the right comb plate 7, so as to ensure that the top surface of the concrete is on the same horizontal plane as the upper surface of the left comb plate 2 and the right comb plate 7 and the bridge deck.

[0024] 8. Elastic sound-absorbing material 6 is poured into the gap between the teeth of the left comb plate 2 and the right comb plate 7. The upper surface of the elastic sound-absorbing material 6 is on the same horizontal plane as the lower surface of the left comb plate 2 and the right comb plate 7.

[0025] The present invention, which adopts the above technical solution, has the following beneficial effects compared with the prior art: In view of the first defect of the prior art, during the concrete grouting process, some concrete will enter the gap between the comb teeth; this patent innovatively uses the sliding pad 3 to prevent the concrete from returning to the gap between the comb teeth and even the bridge deck, so that the entire pouring process is clean and neat and will not cause the concrete to get stuck.

[0026] Addressing the second shortcoming of existing technologies: welding the underlying steel plate structure is time-consuming and labor-intensive. This patent innovatively eliminates the need for on-site welding; the sliding pad 3 provides support, resulting in a better overall mechanical performance. Attached Figure Description

[0027] To further illustrate the present invention, the following description is provided in conjunction with the accompanying drawings:

[0028] Figure 1 A three-dimensional diagram of the invention;

[0029] Figure 2 This is a cross-sectional schematic diagram of the invention;

[0030] Figure 3 A structural diagram showing the arrangement of the comb teeth;

[0031] Figure 4 This is a layout diagram of the sliding pad and the supporting anchor plate;

[0032] Figure 5 Top view of the invention;

[0033] Figure 6 This is a cross-sectional schematic diagram of the invention;

[0034] Figure 7 A diagram showing the layout of the stoppipes;

[0035] Figure 8 This is a side view of the sliding pad and the supporting anchor plate;

[0036] Figure 9 This is a side view of the sliding pad and the supporting anchor plate;

[0037] The components include: 1. Supporting anchor plate; 2. Left comb plate; 3. Sliding pad; 4. Supporting upright plate; 5. Supporting waterstop; 6. Elastic sound-absorbing material; 7. Right comb plate. Implementation

[0038] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. For those skilled in the art, the specific meaning of the above terms in the present invention can be understood according to the specific circumstances.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] This patent provides multiple parallel solutions; the different descriptions represent improved solutions or parallel solutions based on the basic solution. Each solution has its own unique characteristics. Furthermore, the technical features involved in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other. Fixing methods not described herein can be any type of fixing, such as threaded fixing, bolt fixing, or adhesive bonding.

[0041] Example 1: Referring to all the attached drawings; A comb-type bridge expansion joint with integrated anchoring and noise reduction includes a left comb plate 2 and a right comb plate 7 located on both sides of the bridge expansion joint. The left comb plate 2 and the right comb plate 7 are arranged in an alternating manner. The characteristic feature is that the lower parts of both the left comb plate 2 and the right comb plate 7 are connected to a supporting anchor plate 1 and a supporting vertical plate 4; the supporting anchor plate 1 is a hollow structure with a single-sided notch, and the single-sided notch side connects to the supporting vertical plate 4 to form a rectangular groove, with a sliding pad 3 connected to the upper part of the rectangular groove; the lower parts of the supporting vertical plates 4 on both sides of the expansion joint are connected to the upper part of the casting template with a supporting waterstop 5, and an elastic sound-absorbing material 6 is provided on the upper part of the supporting waterstop 5. The substantial technical effect and implementation process of this technical solution, i.e., its basic function, are as follows: An installation method for a comb-type bridge expansion joint with integrated anchoring and noise reduction includes the following steps:

[0042] 1. A support plate 4 is connected to the lower part of the left comb plate 2. A sliding pad 3 is attached to the lower part of the left comb plate 2 on the left side of the support plate 4. Multiple support anchor plates 1 are evenly arranged on the left side of the support plate 4. The left comb plate 2, sliding pad 3 and support plate 4 of the support anchor plate 1 are attached to each other.

[0043] 2. A support plate 4 is connected to the lower part of the right comb plate 7. A sliding pad 3 is attached to the lower part of the right comb plate 7 on the right side of the support plate 4. Multiple support anchor plates 1 are evenly arranged on the right side of the support plate 4. The right comb plate 7, sliding pad 3 and support plate 4 are attached to the support anchor plate 1.

[0044] 3. Based on the depth of the reserved groove of the bridge expansion joint, make the casting template, place the casting template on both sides of the expansion joint, and connect it with the pre-embedded steel bars of the beam using tied steel bars;

[0045] 4. Connect the supporting waterstop strip to the pouring formwork 5, ensuring a firm connection that does not come off;

[0046] 5. Use hoisting equipment to place the integral connecting components of the already connected left comb plate 2 and right comb plate 7 into the reserved slots on both sides of the expansion joint, ensuring that the left comb plate 2 and right comb plate 7 are staggered and that their upper surfaces are on the same horizontal plane as the bridge deck.

[0047] 6. Connect multiple pre-embedded steel bars in the beams to multiple support anchor plates 1 to ensure a firm connection. Insert longitudinal steel bars into the hollow part of the support anchor plate 1. The length of the longitudinal steel bars is the same as that of the expansion joint.

[0048] 7. Pour steel fiber or polypropylene fiber concrete that meets the strength requirements into the reserved groove of the bridge expansion joint below the left comb plate 2 and the right comb plate 7, so as to ensure that the top surface of the concrete is on the same horizontal plane as the upper surface of the left comb plate 2 and the right comb plate 7 and the bridge deck.

[0049] 8. Elastic sound-absorbing material 6 is poured into the gap between the teeth of the left comb plate 2 and the right comb plate 7. The upper surface of the elastic sound-absorbing material 6 is on the same horizontal plane as the lower surface of the left comb plate 2 and the right comb plate 7.

[0050] Furthermore, this patent has the following significant advantages over existing technologies:

[0051] To address the first defect of existing technology: during the concrete grouting process, some concrete will enter the gap between the comb teeth; this patent innovatively uses a sliding pad 3 to prevent concrete from returning to the gap between the comb teeth or even the bridge deck, making the entire pouring process clean and efficient, and preventing concrete from getting stuck.

[0052] Addressing the second shortcoming of existing technologies: welding the underlying steel plate structure is time-consuming and labor-intensive. This patent innovatively eliminates the need for on-site welding; the sliding pad 3 provides support, resulting in a better overall mechanical performance.

[0053] Example 2: As a further improvement, parallel, or optional independent solution, the supporting anchor plate 1 comprises multiple plates, which are evenly arranged along the length of the supporting upright plate 4. The shape of the rectangular groove of the supporting anchor plate 1 matches the shape of the sliding pad 3. The sliding pad 3 has the same length as the left comb plate 2 and the right comb plate 7. The supporting upright plate 4 has the same length as the sliding pad 3. The substantial technical effect and implementation process of this technical solution, i.e., its basic function, are as follows: the structure fits perfectly, and the overall production and installation are very convenient.

[0054] Example 3: As a further improvement, parallel, or optional independent solution, the supporting waterstop 5 is an elastic pressure-bearing structure, and its material is canvas, rubber, or high-elastic stainless steel. The substantial technical effect and implementation process of this technical solution, i.e., its basic function, are as follows: The elastic sound-absorbing material 6 is a cast-in-place high-performance polyurethane or EVA foam elastic sound-absorbing material. The sound absorption effect is better.

[0055] This invention relates to the field of bridge expansion joints, and more particularly to an integrally anchored, noise-reducing comb-type bridge expansion joint and its installation method. The expansion joint comprises a left and right comb-tooth plate arranged in an alternating pattern on both sides of the bridge expansion joint; both the left and right comb-tooth plates are connected to a supporting anchor plate and a supporting vertical plate at their lower parts; the supporting anchor plate is a hollow, loop-shaped structure with a single-sided notch, forming a rectangular groove after the notch side connects to the supporting vertical plate, and a sliding pad is connected to the upper part of the rectangular groove; the lower parts of the supporting vertical plates on both sides of the expansion joint are connected to the upper part of the casting template to support a waterstop, and an elastic sound-absorbing material is placed on the upper part of the waterstop. This invention effectively improves the durability of the expansion joint and reduces noise.

[0056] Innovatively, each of the above effects exists independently, yet a single structure can be used to combine the results.

[0057] It should be noted that the multiple solutions provided in this patent include their own basic solutions, which are independent of each other and do not restrict each other. However, they can also be combined with each other without conflict to achieve multiple effects.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims.

Claims

1. A comb-type bridge expansion joint device with integral anchoring and noise reduction, comprising a left comb plate (2) and a right comb plate (7) located on both sides of the bridge expansion joint, wherein the left comb plate (2) and the right comb plate (7) are arranged in an alternating manner, characterized in that: The lower parts of the left comb plate (2) and the right comb plate (7) are both connected to the support anchor plate (1) and the support upright plate (4); the support anchor plate (1) is a hollow structure with a single-sided notch, and the single-sided notch side is connected to the support upright plate (4) to form a rectangular slot, and the upper part of the rectangular slot is connected to the sliding pad plate (3); the lower part of the support upright plate (4) on both sides of the expansion joint is connected to the upper part of the casting template with a supporting waterstop (5), and the upper part of the supporting waterstop (5) is provided with elastic sound-absorbing material (6). The sliding pad (3) has a supporting effect, and the overall mechanical effect is better; The shape of the rectangular slot of the supporting anchor plate (1) matches the shape of the sliding pad plate (3); The elastic sound-absorbing material (6) is a cast-in-place high-performance polyurethane or EVA foam elastic sound-absorbing material.

2. The integral anchored noise-reducing comb-type bridge expansion joint as described in claim 1, characterized in that, The support anchor plate (1) comprises multiple support anchor plates (1) and the multiple support anchor plates (1) are evenly arranged along the length direction of the support upright plate (4).

3. The integral anchored noise-reducing comb-type bridge expansion joint as described in claim 1, characterized in that, The sliding pad (3) has the same length as the left comb plate (2) and the right comb plate (7).

4. The integral anchored noise-reducing comb-type bridge expansion joint as described in claim 1, characterized in that, The lengths of the supporting upright plate (4) and the sliding pad plate (3) are the same.

5. The integral anchored noise-reducing comb-type bridge expansion joint as described in claim 1, characterized in that, The supporting waterstop (5) is an elastic pressure-bearing structure, and its material is canvas, rubber or high-elastic stainless steel.

6. The installation method of the integral anchored noise reduction comb-type bridge expansion joint as described in any one of claims 1-5, comprising the following steps: 1) Connect a support plate (4) to the lower part of the left comb plate (2), and connect a sliding pad (3) to the lower part of the left comb plate (2) on the left side of the support plate (4). Arrange multiple support anchor plates (1) evenly on the left side of the support plate (4). The support anchor plate (1) is connected to the left comb plate (2), the sliding pad (3) and the support plate (4). 2) Connect a support plate (4) to the lower part of the right comb plate (7), and connect a sliding pad (3) to the lower part of the right comb plate (7) on the right side of the support plate (4). Arrange multiple support anchor plates (1) evenly on the right side of the support plate (4). The support anchor plate (1) is connected to the right comb plate (7), the sliding pad (3) and the support plate (4) in close contact. 3) Make a casting template according to the depth of the reserved groove of the bridge expansion joint, place the casting template on both sides of the expansion joint, and connect it with the pre-embedded steel bars of the beam using tied steel bars; 4) Connect the supporting waterstop strip (5) on the pouring formwork to ensure that the connection is firm and does not fall off; 5) Use hoisting equipment to place the integral connecting components of the already connected left comb plate (2) and right comb plate (7) into the reserved slots on both sides of the expansion joint, so as to ensure that the left comb plate (2) and right comb plate (7) are staggered and the upper surface is on the same horizontal plane as the bridge deck. 6) Connect multiple pre-embedded steel bars of beams to multiple support anchor plates (1) to ensure a firm connection. Insert longitudinal steel bars into the hollow part of the support anchor plate (1). The length of the longitudinal steel bars is the same as that of the expansion device. 7) Pour steel fiber or polypropylene fiber concrete that meets the strength requirements into the reserved groove of the bridge expansion joint below the left comb plate (2) and the right comb plate (7) to ensure that the top surface of the concrete is on the same level as the upper surface of the left comb plate (2) and the right comb plate (7) and the bridge deck. 8) Pour elastic sound-absorbing material (6) into the gaps between the teeth of the left comb plate (2) and the right comb plate (7). The upper surface of the elastic sound-absorbing material (6) is on the same horizontal plane as the lower surface of the left comb plate (2) and the right comb plate (7).

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