Mounting structure and mounting method of concrete-free low-noise telescopic device

Abstract

The invention discloses a mounting structure and a mounting method of a concrete-free low-noise telescopic device, and belongs to the field of bridge expansion joints, the mounting structure comprises a telescopic groove, an L-shaped embedded steel plate is mounted in the telescopic groove, the mounting structure further comprises a pre-assembly part, the pre-assembly part comprises a leveling plate and two symmetrically-arranged telescopic parts, and the leveling plate is connected with the two telescopic parts. The two telescopic pieces are both detachably connected with the leveling plate, the space between the two telescopic pieces is further filled with noise reduction filler, by improving the mounting structure and the mounting method, the relative position of the two comb plates is more accurate, noise is reduced, and the problems that in the prior art, deviation is likely to be generated between the relative position of the bridge expansion joint comb plates and a design value, and noise is reduced are solved. And noise is easy to generate.

Description

Technical Field

[0001] This invention relates to the field of bridge expansion joints, and in particular to an installation structure and installation method for a concrete-free, low-noise expansion joint device. Background Technology

[0002] To prevent bridge deformation due to temperature changes, expansion joints are installed at intervals on the bridge. The expansion joint mainly consists of two interlocking comb plates. In the existing technology, when installing the expansion joint, the corresponding components of the two comb plates need to be installed onto the embedded steel plate in sequence. Due to the dimensional error of the expansion joint itself, the relative position of the two comb plates after installation is prone to deviate from the design value, resulting in poor actual use effect and easy generation of large noise even without large deformation.

[0003] For example, the patent disclosed in Chinese patent literature, "A comb-type bridge expansion joint leveling device and its installation method," with publication number CN1219131C, includes an adjusting rod with threads engraved on its peripheral wall, a positioning screw threaded to the middle of the adjusting rod, an installation nut threaded to the head of the adjusting rod, and an elastic rubber pad fitted over the adjusting rod and located between the positioning screw and the installation nut; the adjusting rod can be composed of two rods combined into a U-shape. The drawback of this patent is that the two comb plates of the bridge expansion joint are installed separately at the expansion joint. Due to errors in dimensional accuracy, the relative positions of the two comb plates are prone to deviation, resulting in poor actual performance. Summary of the Invention

[0004] The present invention aims to overcome the problem in the prior art where the relative position of the comb plates of bridge expansion joints easily deviates from the design value, leading to noise. It provides an installation structure and method for a concrete-free, low-noise expansion joint device. By improving the installation structure and method, the relative position of the two comb plates is made more accurate, thereby reducing noise.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: This invention discloses an installation structure for a concrete-free, low-noise expansion joint, comprising an expansion groove in which an L-shaped pre-embedded steel plate is installed, and a pre-assembled component, comprising an adjustment plate and two symmetrically arranged expansion members, both of which are detachably connected to the adjustment plate, and noise-reducing filler is placed between the two expansion members.

[0006] In this application, two telescopic components containing comb plates are assembled before installation using pre-assembled parts, avoiding errors caused by installation on the pre-embedded steel plate. Since during pre-installation, it is only necessary to ensure the tolerance at the connection between the telescopic component and the adjusting plate, the actual relative position of the comb plate will not deviate significantly from the design value.

[0007] Preferably, the telescopic component includes a base plate, on which a T-shaped plate is welded, and comb plates and anti-collision plates are respectively connected to both sides of the T-shaped plate.

[0008] Preferably, the base plate and the L-shaped embedded steel plate are fixedly connected by vertical bolts, and the anti-collision plate and the L-shaped embedded steel plate are fixedly connected by horizontal bolts.

[0009] Preferably, a threaded sleeve is pre-embedded in the expansion groove, and the bolts connecting the base plate and the L-shaped pre-embedded steel plate are installed in the threaded sleeve.

[0010] Preferably, the comb plate includes a comb tooth section and a mounting section, and a filler support is provided on one side of the mounting section, with the noise-reducing filler filling the top of the filler support.

[0011] Preferably, a water-stop fixing seat is also installed on the T-shaped plate, and a water-stop strip is installed on the water-stop fixing seat.

[0012] Preferably, the waterstop fixing seat includes an upper angle steel and a lower angle steel, the waterstop is installed between the upper angle steel and the lower angle steel, and the upper angle steel and the lower angle steel are fixedly connected by screws.

[0013] Preferably, the L-shaped embedded steel plate is pre-embedded and fixed to the expansion groove by shear nails or anchor bars.

[0014] A method for installing a concrete-free, low-noise expansion joint includes the following steps: assembling pre-assembled components; pre-embedding and fixing an L-shaped embedded steel plate in the expansion groove; installing the pre-assembled components into the expansion groove and fixing them to the L-shaped embedded steel plate; leveling the road surface using a leveling plate; pouring elastic filler into the pre-assembled components; and removing the leveling plate.

[0015] Preferably, the assembly process of the pre-assembled component includes: Weld the T-shaped plate onto the base plate; Weld the comb plate and the anti-collision plate to both sides of the T-shaped plate; Noise-reducing filler is placed between the comb plates of the two telescopic components; The adjusting plate is fixed to the comb plate with bolts.

[0016] Therefore, the present invention has the following beneficial effects: (1) it can make the relative position of the two comb plates more accurate, thereby reducing noise; (2) it makes the on-site installation process more convenient. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a pre-assembled component of the present invention.

[0018] Figure 2This is a schematic diagram of a structure in which the L-shaped pre-embedded steel plate of the present invention is installed at the expansion groove.

[0019] Figure 3 This is a schematic diagram of one of the assembled structures of the present invention.

[0020] Figure 4 This is a schematic diagram of the structure after the installation method of the present invention is completed.

[0021] Figure 5 This is a schematic diagram of an L-shaped pre-embedded steel plate installed at the expansion groove in Embodiment 2 of the present invention.

[0022] In the diagram: 1. Expansion groove; 2. L-shaped embedded steel plate; 3. Pre-assembled component; 4. Adjustable plate; 5. Base plate; 6. T-shaped plate; 7. Anti-collision plate; 8. Comb plate; 9. Waterstop; 10. Upper angle steel; 11. Lower angle steel; 12. Noise-reducing filler; 13. Bolt sleeve; 14. Shear nail; 15. Anchor bar structure; 16. Elastic filler. Detailed Implementation

[0023] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0024] Example 1, as Figure 1-4 As shown, an installation structure for a concrete-free, low-noise expansion joint is applied to bridge expansion joints. By pre-assembling the left and right parts of the expansion joint in the factory, the construction speed on the bridge construction site is improved, thereby shortening the bridge construction cycle. Furthermore, because the left and right parts of the expansion joint are pre-fixed relative to each other, the relative positions of the two comb plates 8 will not deviate significantly due to the positional accuracy of the holes drilled in the embedded steel plate. This invention comprises three parts: an expansion groove 1, an L-shaped embedded steel plate 2, and a pre-assembled component 3.

[0025] Figure 1 The figure shows the pre-assembled component 3 of the present invention. The left-right direction in the figure represents the length of the bridge, and the direction perpendicular to the plane represents the width of the bridge. The pre-assembled component 3 includes an adjusting plate 4 and two symmetrically arranged telescopic members, both of which are detachably connected to the adjusting plate 4. Specifically, the detachable connection is a bolted connection. The adjusting plates 4 do not cover the entire upper side of the pre-assembled component 3, but are arranged at intervals in the direction perpendicular to the plane. In this embodiment, the adjusting plates 4 are arranged at 0.5-meter intervals, and this interval can be adjusted according to the actual length of the module. The gap between two adjacent adjusting plates 4 can provide operating space for subsequent assembly and also provide an inlet for subsequent pouring of mortar.

[0026] The telescopic components include a base plate 5, a T-shaped plate 6, a crash barrier 7, and a comb plate 8. The base plate 5 is horizontally positioned, while the T-shaped plate 6 is vertically positioned, perpendicular to both. The crash barrier 7 and the comb plate 8 are respectively installed on both sides of the web of the T-shaped plate 6. The comb plate 8 is installed on the side of the two telescopic components facing each other, while the crash barrier 7 is installed on the side of the two telescopic components facing away from each other. The comb plate 8 includes a mounting part and a comb tooth part. Both the mounting part of the comb plate 8 and the crash barrier 7 are vertical, but perpendicular to the vertical plane of the T-shaped plate 6. The comb tooth part of the comb plate 8 is horizontally positioned, and the two comb plates 8 mesh with each other. Additionally, the comb plate 8 has screw holes for bolt connection with the adjusting plate 4. During assembly, ensuring the tolerance of the mating screw holes on the adjusting plate 4 and the comb plate 8 is sufficient to ensure the accuracy of the relative position of the two comb plates 8.

[0027] The base plate 5 and the T-shaped plate 6 are fixed together by welding, as are the T-shaped plate 6, the crash barrier 7, and the comb plate 8. All welding operations are completed in the factory. Compared to welding on the bridge construction site, factory welding significantly improves welding quality, ensuring the expansion joint's service life meets standards. Both the base plate 5 and the crash barrier 7 have holes adapted to the L-shaped embedded steel plate 2.

[0028] A waterstop 9 is installed between the opposing sides of the T-shaped plates 6 of the two telescopic components. The waterstop 9 is fixed by a combination of upper angle steel 10 and lower angle steel 11. The lower angle steel 11 is welded and fixed to the upper side of the wing plate of the T-shaped plate 6, while the upper angle steel 10 is tightened with bolts to press the waterstop 9. The outer edge of the waterstop 9 is provided with an edging, which covers one end of the lower angle steel 11, thereby further improving the reliability of the fixation. The waterstop 9 has a square shape when unfolded. During use, due to the fixation on both sides, the middle part of the waterstop 9 droops under the action of gravity, making its cross-section a U-shaped structure. Drainage pipes are provided at both ends of the waterstop 9 perpendicular to the drawing to drain rainwater from the waterstop 9.

[0029] In addition, a filler support is fixed on the opposite side of the comb plate 8 of the two telescopic parts. The upper part of the filler support is filled with noise reduction filler 12. The noise reduction filler 12 can be noise reduction and sound absorption cotton or other existing noise reduction materials.

[0030] Figure 2 A cross-sectional view is shown showing the L-shaped embedded steel plate 2 installed in the expansion joint 1, with the direction of the section being the same as... Figure 1 They are the same. In this embodiment, the L-shaped embedded steel plate 2 is fixed in the expansion groove 1 by shear nails 14. On the side of the expansion groove 1, there are two rows of shear nails 14 spaced vertically, and on the bottom surface of the expansion groove 1, there are two rows of shear nails 14 spaced horizontally.

[0031] Figure 3A cross-sectional view is shown after the pre-assembled component 3 is installed into the telescopic groove 1. Since the length of the adjusting plate 4 is greater than the overall width of the telescopic groove 1, both ends of the adjusting plate 4 directly contact the ground on both sides, facilitating leveling. The base plate 5 is fixedly connected to the L-shaped embedded steel plate 2 by vertical bolts, and the anti-collision plate 7 is fixedly connected to the L-shaped embedded steel plate 2 by horizontal bolts. The bolt size at the base plate 5 is larger than the bolt size at the anti-collision plate 7. Additionally, a bolt sleeve 13 is pre-embedded at the bolt position on the base plate 5 in the telescopic groove 1. The bolt sleeve 13 has internal threads, and the bolts on the base plate 5 are installed in the bolt sleeve 13. A wrench can be inserted through the gap between adjacent adjusting plates 4 to tighten the bolts. The outer side of the bolt sleeve 13 has a corrugated pattern to enhance its pre-embedding strength, ensuring that the telescopic device will not shift within the telescopic groove 1 during long-term use.

[0032] Figure 4 A schematic diagram of the structure after installation is shown. At this point, the telescopic component is filled with elastic material, and the adjusting plate 4 is removed by unscrewing the bolts.

[0033] An installation method for a concrete-free, low-noise expansion joint includes the following steps: assembling a pre-assembled component 3; embedding a bolt sleeve 13 in an expansion groove 1; embedding and fixing an L-shaped pre-embedded steel plate 2 in the expansion groove 1; installing the pre-assembled component 3 into the expansion groove 1 and fixing it to the L-shaped pre-embedded steel plate 2; leveling the road surface using a leveling plate 4; pouring elastic filler 16 into the pre-assembled component 3; and removing the leveling plate.

[0034] The assembly process of pre-assembled component 3 specifically includes: welding the T-shaped plate 6 to the base plate 5; welding the comb plate 8 and the anti-collision plate 7 to both sides of the T-shaped plate 6; welding the lower angle steel 11 to the T-shaped plate 6; filling the space between the comb plates 8 of the two telescopic components with noise-reducing filler 12; installing the waterstop 9 on the lower angle steel 11 and fixing it with the upper angle steel 10; and fixing the adjusting plate 4 to the comb plate 8 with bolts. Before welding, two points need to be selected at the connection between the T-shaped plate 6 and the base plate 5 for electric welding. Similarly, two points need to be selected at the connection between the comb plate 8 and the T-shaped plate 6 for spot welding, and two points need to be selected between the anti-collision plate 7 and the T-shaped plate 6 for spot welding. After spot welding, the above structure is pre-fixed. Then, the entire connection is welded. There are several ways to install angle steel. For example, a lower angle steel 11 can be welded to each T-shaped plate 6. The lower angle steel 11 has two through holes for installing the upper angle steel 10, and the two through holes are located on both sides of the T-shaped plate 6. Another example is that the same lower angle steel 11 can be welded between two adjacent T-shaped plates 6. The lower angle steel 11 rests on the two T-shaped plates 6 and also has two through holes for installing the upper angle steel 10, and the two through holes are located between the two adjacent T-shaped plates 6.

[0035] After the waterstop 9 is installed, the two expansion joints of the pre-assembled component 3 are actually connected by the waterstop 9, but their relative positions are not yet determined. At this time, noise-reducing and sound-absorbing cotton is placed on the packing support. The sound-absorbing cotton should not be compressed too tightly, otherwise the noise-reducing and sound-absorbing cotton will be too compacted after the two expansion joints are placed close together. Then, the comb plates 8 of the two expansion joints are engaged with each other, and the adjusting plate 4 is installed.

[0036] Then, the L-shaped embedded steel plate 2 and bolt sleeve 13 are pre-embedded at the bridge construction site. Before pre-embedding, pre-embedded holes for installing shear studs 14 or bolt sleeves 13 need to be drilled in the expansion joint 1. The drilling process can be carried out on the construction site or pre-drilled during beam fabrication. A drilling template is required to determine the position of each hole. Since the relative position between the two comb plates 8 is ensured through pre-assembly in this application, the mounting holes on the L-shaped embedded steel plate 2 can be selected as waist holes in the direction perpendicular to the drawing.

[0037] Before installing the pre-assembled component 3 into the expansion groove 1, the space inside the expansion groove 1 should be cleaned to avoid debris affecting the installation. Then, the pre-assembled component 3 should be installed into the expansion groove 1 as a whole, and its base plate 5 and anti-collision plate 7 should be fixed with bolts. After fixing, the road surface should be leveled using the leveling plate 4.

[0038] After leveling is completed, elastic filler 16 is poured into the internal space of the pre-assembled component 3. The elastic filler 16 is made of ECO or polyurethane elastic material. After the elastic filler 16 is filled, the position of each structure of the expansion joint relative to the expansion joint is determined. At this time, removing the leveling plate 4 will not affect the relative position of the two comb plates 8.

[0039] After prolonged use, if the expansion joint needs to be inspected and replaced, the expansion joint can be replaced by removing the elastic filler 16 and disassembling the bolts. Compared with the existing concrete pouring fixation, the structure of this application is more convenient for inspection and replacement.

[0040] Example 2, as Figure 5 As shown, an installation structure for a concrete-free, low-noise expansion joint is applied to bridge expansion joints. By pre-assembling the left and right parts of the expansion joint in the factory, the construction speed on the bridge construction site is improved, thereby shortening the bridge construction cycle. Furthermore, because the left and right parts of the expansion joint are pre-fixed relative to each other, the relative positions of the two comb plates 8 will not deviate significantly due to the positional accuracy of the holes drilled in the embedded steel plate. This invention comprises three parts: an expansion groove 1, an L-shaped embedded steel plate 2, and a pre-assembled component 3.

[0041] The pre-assembled component 3 includes an adjusting plate 4 and two symmetrically arranged telescopic members, both of which are detachably connected to the adjusting plate 4. Specifically, the detachable connection is a bolted connection. The adjusting plates 4 do not cover the entire upper side of the pre-assembled component 3, but are arranged at intervals in the direction perpendicular to the drawing. In this embodiment, the adjusting plates 4 are arranged at 0.5-meter intervals, and this interval can be adjusted according to the actual length of the module. The gap between two adjacent adjusting plates 4 can be used to provide operating space for subsequent assembly, and also to provide an inlet for subsequent pouring of mortar.

[0042] The telescopic components include a base plate 5, a T-shaped plate 6, a crash barrier 7, and a comb plate 8. The base plate 5 is horizontally positioned, while the T-shaped plate 6 is vertically positioned, perpendicular to both. The crash barrier 7 and the comb plate 8 are respectively installed on both sides of the web of the T-shaped plate 6. The comb plate 8 is installed on the side of the two telescopic components facing each other, while the crash barrier 7 is installed on the side of the two telescopic components facing away from each other. The comb plate 8 includes a mounting part and a comb tooth part. Both the mounting part of the comb plate 8 and the crash barrier 7 are vertical, but perpendicular to the vertical plane of the T-shaped plate 6. The comb tooth part of the comb plate 8 is horizontally positioned, and the two comb plates 8 mesh with each other. Additionally, the comb plate 8 has screw holes for bolt connection with the adjusting plate 4. During assembly, ensuring the tolerance of the mating screw holes on the adjusting plate 4 and the comb plate 8 is sufficient to ensure the accuracy of the relative position of the two comb plates 8.

[0043] The base plate 5 and the T-shaped plate 6 are fixed together by welding, as are the T-shaped plate 6, the crash barrier 7, and the comb plate 8. All welding operations are completed in the factory. Compared to welding on the bridge construction site, factory welding significantly improves welding quality, ensuring the expansion joint's service life meets standards. Both the base plate 5 and the crash barrier 7 have holes adapted to the L-shaped embedded steel plate 2.

[0044] A waterstop 9 is installed between the opposing sides of the T-shaped plates 6 of the two telescopic components. The waterstop 9 is fixed by a combination of upper angle steel 10 and lower angle steel 11. The lower angle steel 11 is welded and fixed to the upper side of the wing plate of the T-shaped plate 6, while the upper angle steel 10 is tightened with bolts to press the waterstop 9. The outer edge of the waterstop 9 is provided with an edging, which covers one end of the lower angle steel 11, thereby further improving the reliability of the fixation. The waterstop 9 has a square shape when unfolded. During use, due to the fixation on both sides, the middle part of the waterstop 9 droops under the action of gravity, making its cross-section a U-shaped structure. Drainage pipes are provided at both ends of the waterstop 9 perpendicular to the drawing to drain rainwater from the waterstop 9.

[0045] In addition, a filler support is fixed on the opposite side of the comb plate 8 of the two telescopic parts. The upper part of the filler support is filled with noise reduction filler 12. The noise reduction filler 12 can be noise reduction and sound absorption cotton or other existing noise reduction materials.

[0046] In this embodiment, unlike in Embodiment 1, the bottom of the L-shaped embedded steel plate 2 is fixed in the expansion groove 1 by two rows of shear nails 14. The side of the L-shaped embedded steel plate 2 is fixed by anchor bar structures 15.

[0047] The base plate 5 is fixedly connected to the L-shaped embedded steel plate 2 by vertical bolts, and the anti-collision plate 7 is fixedly connected to the L-shaped embedded steel plate 2 by horizontal bolts. The bolt size at the base plate 5 is larger than the bolt size at the anti-collision plate 7. Additionally, a bolt sleeve 13 is pre-embedded at the bolt position on the base plate 5 in the expansion groove 1. The bolt sleeve 13 has internal threads, and the bolts on the base plate 5 are installed in the bolt sleeve 13. A wrench can be inserted through the gap between adjacent adjusting plates 4 to tighten the bolts. The outer side of the bolt sleeve 13 has a corrugated pattern to enhance its pre-embedded strength and ensure that the expansion device will not shift within the expansion groove 1 during long-term use.

[0048] The telescopic component is filled with elastic material, and the adjusting plate 4 can be removed by unscrewing the bolts.

[0049] An installation method for a concrete-free, low-noise expansion joint includes the following steps: assembling a pre-assembled component 3; embedding a bolt sleeve 13 in an expansion groove 1; embedding and fixing an L-shaped pre-embedded steel plate 2 in the expansion groove 1; installing the pre-assembled component 3 into the expansion groove 1 and fixing it to the L-shaped pre-embedded steel plate 2; leveling the road surface using a leveling plate 4; pouring elastic filler 16 into the pre-assembled component 3; and removing the leveling plate.

[0050] The assembly process of pre-assembled component 3 specifically includes: welding the T-shaped plate 6 to the base plate 5; welding the comb plate 8 and the anti-collision plate 7 to both sides of the T-shaped plate 6; welding the lower angle steel 11 to the T-shaped plate 6; filling the space between the comb plates 8 of the two telescopic components with noise-reducing filler 12; installing the waterstop 9 on the lower angle steel 11 and fixing it with the upper angle steel 10; and fixing the adjusting plate 4 to the comb plate 8 with bolts. Before welding, two points need to be selected at the connection between the T-shaped plate 6 and the base plate 5 for electric welding. Similarly, two points need to be selected at the connection between the comb plate 8 and the T-shaped plate 6 for spot welding, and two points need to be selected between the anti-collision plate 7 and the T-shaped plate 6 for spot welding. After spot welding, the above structure is pre-fixed. Then, the entire connection is welded. There are several ways to install angle steel. For example, a lower angle steel 11 can be welded to each T-shaped plate 6. The lower angle steel 11 has two through holes for installing the upper angle steel 10, and the two through holes are located on both sides of the T-shaped plate 6. Another example is that the same lower angle steel 11 can be welded between two adjacent T-shaped plates 6. The lower angle steel 11 rests on the two T-shaped plates 6 and also has two through holes for installing the upper angle steel 10, and the two through holes are located between the two adjacent T-shaped plates 6.

[0051] After the waterstop 9 is installed, the two expansion joints of the pre-assembled component 3 are actually connected by the waterstop 9, but their relative positions are not yet determined. At this time, noise-reducing and sound-absorbing cotton is placed on the packing support. The sound-absorbing cotton should not be compressed too tightly, otherwise the noise-reducing and sound-absorbing cotton will be too compacted after the two expansion joints are placed close together. Then, the comb plates 8 of the two expansion joints are engaged with each other, and the adjusting plate 4 is installed.

[0052] Then, the L-shaped embedded steel plate 2 and bolt sleeve 13 are pre-embedded at the bridge construction site. Before pre-embedding, pre-embedded holes for installing shear studs 14 or bolt sleeves 13 need to be drilled in the expansion joint 1. The drilling process can be carried out on the construction site or pre-drilled during beam fabrication. A drilling template is required to determine the position of each hole. Since the relative position between the two comb plates 8 is ensured through pre-assembly in this application, the mounting holes on the L-shaped embedded steel plate 2 can be selected as waist holes in the direction perpendicular to the drawing.

[0053] Before installing the pre-assembled component 3 into the expansion groove 1, the space inside the expansion groove 1 should be cleaned to avoid debris affecting the installation. Then, the pre-assembled component 3 should be installed into the expansion groove 1 as a whole, and its base plate 5 and anti-collision plate 7 should be fixed with bolts. After fixing, the road surface should be leveled using the leveling plate 4.

[0054] After leveling is completed, elastic filler 16 is poured into the internal space of the pre-assembled component 3. The elastic filler 16 is made of ECO or polyurethane elastic material. After the elastic filler 16 is filled, the position of each structure of the expansion joint relative to the expansion joint is determined. At this time, removing the leveling plate 4 will not affect the relative position of the two comb plates 8.

[0055] After prolonged use, if the expansion joint needs to be inspected and replaced, the expansion joint can be replaced by removing the elastic filler 16 and disassembling the bolts. Compared with the existing concrete pouring fixation, the structure of this application is more convenient for inspection and replacement.

Claims

1. An installation structure for a concrete-free, low-noise expansion joint, comprising an expansion groove in which an L-shaped pre-embedded steel plate is installed, and a pre-assembled component, the pre-assembled component comprising an adjustment plate and two symmetrically arranged expansion members, the two expansion members being detachably connected to the adjustment plate, and noise-reducing filler being used to fill the space between the two expansion members.

2. The installation structure of a concrete-free, low-noise expansion joint device according to claim 1, characterized in that, The telescopic component includes a base plate, on which a T-shaped plate is welded. A comb plate and a crash plate are respectively connected to both sides of the T-shaped plate.

3. The installation structure of a concrete-free, low-noise expansion joint device according to claim 2, characterized in that, The base plate and the L-shaped embedded steel plate are fixedly connected by vertical bolts, and the anti-collision plate and the L-shaped embedded steel plate are fixedly connected by horizontal bolts.

4. The installation structure of a concrete-free, low-noise expansion joint device according to claim 3, characterized in that, A threaded sleeve is pre-embedded in the expansion groove, and the bolts connecting the base plate and the L-shaped pre-embedded steel plate are installed in the threaded sleeve.

5. The installation structure of a concrete-free, low-noise expansion joint device according to claim 2, characterized in that, The comb plate includes a comb tooth section and a mounting section. A filler support is provided on one side of the mounting section, and the noise reduction filler is filled above the filler support.

6. The installation structure of a concrete-free, low-noise expansion joint device according to claim 2, characterized in that, The T-shaped plate is also equipped with a water-stop fixing seat, and a water-stop strip is installed on the water-stop fixing seat.

7. The installation structure of a concrete-free, low-noise expansion joint device according to claim 6, characterized in that, The waterstop fixing seat includes an upper angle steel and a lower angle steel. The waterstop is installed between the upper angle steel and the lower angle steel, and the upper angle steel and the lower angle steel are fixedly connected by screws.

8. The installation structure of a low-noise, concrete-free expansion joint device according to any one of claims 1-7, characterized in that, The L-shaped embedded steel plate is fixed to the expansion groove by pre-embedding with shear nails or anchor bars.

9. An installation method for a concrete-free, low-noise expansion joint, characterized in that, The installation structure described in claim 1 includes the following steps: assembling the pre-assembled parts; pre-embedding and fixing the L-shaped embedded steel plate in the expansion groove; installing the pre-assembled parts into the expansion groove and fixing them to the L-shaped embedded steel plate; leveling the road surface using a leveling plate; pouring elastic filler into the pre-assembled parts; and removing the leveling plate.

10. The installation method of a concrete-free, low-noise expansion joint device according to claim 9, characterized in that, The assembly process of the pre-assembled component includes: welding the T-shaped plate to the base plate; welding the comb plate and the anti-collision plate to both sides of the T-shaped plate; filling the space between the comb plates of the two telescopic components with noise-reducing filler; and fixing the adjusting plate to the comb plate with bolts.

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