Double-sided sound absorption super-structure near rail sound barrier construction method and anchoring device

Abstract

The application provides a double-sided sound absorption super-structure near-rail sound barrier construction method and anchoring device, and the construction method comprises the following steps: lofting and distributing points S100, drilling S200, bolt anchoring S300, bolt positioning S400, sound barrier installation S500. The sound barrier construction method can stably implant the pre-buried installation bolt into the installation hole through the bolt anchoring and bolt positioning steps, and ensures that the installation bolt will not loosen. The perpendicularity, spacing of the installation bolt and the installation hole of the sound barrier column are accurately matched, so that the sound barrier column can be accurately and stably installed on the bridge surface at one time, and the sound barrier installation construction efficiency and the structural stability and identity after the sound barrier installation are improved.

Description

Technical Field

[0001] This invention relates to the field of installation and construction of auxiliary equipment for rail transit, specifically to a construction method and anchoring device for a double-sided sound-absorbing superstructure near-rail sound barrier. Background Technology

[0002] Double-sided sound-absorbing near-railway noise barriers are primarily installed between upper and lower railway lines (in the center of the bridge). These areas typically contain railway equipment such as junction boxes and overhead power lines, especially for existing lines where numerous devices and lines already exist. To rationally place the double-sided near-railway noise barriers between the upper and lower lines, the installation mileage must first be laid out, and the design length of the double-sided near-railway noise barriers adjusted according to the on-site equipment. Simultaneously, appropriate sound insulation barriers must be designed at the locations of the railway equipment to block noise transmission. During installation, the columns of the double-sided sound-absorbing near-railway noise barriers need to be securely installed on the bridge deck. Generally, the columns are fixed to the bridge deck with bolts. Deviations in the spacing and verticality of the bolts will cause interference between the bolts and the mounting holes, preventing them from passing smoothly through. During construction, nuts must be fitted onto the bolts (avoiding direct manipulation of the bolt shaft to prevent damage to the threads), and wrenches or sleeves must be used to straighten the bolts, making the entire construction process very inconvenient.

[0003] A search revealed relevant technical documents in the existing technology. For example, the invention patent publication number "CN120006638A" entitled "A Full-Bandwidth Hyperstructure Evacuation Near-Rail Sound Barrier and Its Installation Method" discloses an installation method for the sound barrier. This method involves driving anchor bolts into predetermined positions to fix H-shaped steel columns, then sequentially placing a support plate, a bottom U-shaped clip, and a rubber strip under the plate. Next, unit panels and inter-panel rubber strips are placed, followed by placing the top sound-absorbing plate and top buckle plate onto the H-shaped steel columns. Finally, the bolts, unit panel copper wires, and bottom copper wires are installed and fixed.

[0004] For example, the invention patent publication document with publication number "CN120401391A" entitled "Sound Barrier Structure and Construction Method" also involves a sound barrier installation method. This method involves installing multiple fixed supports on the pile body, with the multiple fixed supports forming an installation channel along a first direction, into which each sound barrier is inserted and installed. None of the above-mentioned prior art solutions address how to ensure the accurate and stable installation of the sound barrier. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a construction method for a double-sided sound-absorbing metastructure near-railway sound barrier, comprising the following steps: Layout the points S100 on the installation surface and determine the positions of the mounting holes according to the required installation location of the sound barrier; Drill hole S200: Drill a mounting hole according to the determined mounting hole position, wherein the diameter of the mounting hole is larger than the outer diameter of the mounting bolt; Bolt anchoring S300 involves filling the mounting hole with anchoring filler and inserting the bolt into the mounting hole; Bolt positioning S400 positions and fixes the bolts in the mounting holes, ensuring that the bolts maintain verticality and the required spacing between them during the anchoring and curing stage. The S500 sound barrier installation involves fixing the sound barrier columns to the mounting surface using the positioned bolts, and then installing the other components of the sound barrier between the columns.

[0006] Furthermore, in the bolt positioning step S400, an anchoring device is provided. The anchoring device has positioning holes that match the number and size of the mounting bolts. When positioning the bolts, the anchoring device is first placed on the mounting bolts, so that one end of the mounting bolt protrudes from the positioning hole. The protruding end of the mounting bolt is then fixed with a nut. After the bolt positioning is completed, the anchoring device is removed.

[0007] Furthermore, the anchoring device is a positioning plate. When positioning the bolts, a nut is first screwed into the mounting bolts, and the nuts of all mounting bolts are screwed in at the same height. Then, the positioning plate is fitted onto the nuts screwed into the mounting bolts. Finally, the positioning plate is locked with a nut at the protruding end of the mounting bolts.

[0008] Furthermore, in the bolt anchoring step S300, before inserting the bolt into the mounting hole, a base plate gasket is first placed on the mounting hole with alignment. The base plate gasket has a positioning hole two that matches the mounting hole. Then, the mounting bolt is inserted into the mounting hole from the positioning hole two. After completing the bolt positioning step S400, the base plate gasket is not removed.

[0009] Furthermore, in the drilling step S200, a positioning hole is first drilled using an impact drill, and then an installation hole is drilled using a water drill based on the positioning hole.

[0010] Furthermore, after the installation hole is drilled, the inner wall of the hole is roughened using a water drill.

[0011] Furthermore, the positioning hole is drilled through the positioning hole two using the base plate gasket.

[0012] Furthermore, when drilling with a water drill, scale lines are marked on the drill bit to control the drilling depth.

[0013] Furthermore, after completing the bolt positioning, the positioning plate is removed after removing the nuts placed on it; then the sound barrier installation step S500 is performed.

[0014] An anchoring device for the construction of a double-sided sound-absorbing superstructure near-rail sound barrier is also proposed, comprising a positioning plate and a base plate gasket arranged in parallel. A positioning hole one is opened on the positioning plate, and a positioning hole two is opened on the base plate gasket. The positioning hole one and the positioning hole two are coaxial.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects: The sound barrier construction method proposed in this invention, through bolt anchoring and bolt positioning steps, can firmly insert the pre-embedded installation bolts into the installation holes without ensuring that the installation bolts will not loosen. The verticality and spacing of the installation bolts are precisely matched with the installation holes of the sound barrier columns, enabling the sound barrier columns to be accurately and firmly installed on the bridge deck in one go, improving the efficiency of sound barrier installation and the structural stability and uniformity of the sound barrier after installation. Attached Figure Description

[0016] Figure 1 : Schematic diagram of the construction steps for a double-sided sound-absorbing superstructure near-rail sound barrier; Figure 2 : Schematic diagram of sound barrier column installation; Figure 3 Schematic diagram of the anchoring device structure; Figure 4 : Schematic diagram of the split structure of the anchoring device. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] This embodiment relates to a construction method for a double-sided sound-absorbing metastructure near-rail sound barrier. For specific steps, please refer to [link / reference]. Figures 1-4 : S100 involves laying out the installation points on the surface of the mounting surface, determining the positions of the mounting holes according to the required installation location of the sound barrier. In this embodiment, the mounting surface is the bridge surface, specifically located between the upper and lower tracks. A typical sound barrier structure consists of a sound barrier panel made of high-density sound-absorbing material installed between two columns. When installing the sound barrier, the columns must first be fixed to the bridge surface. After the columns are securely installed, the panel is then installed between the columns. Pre-embedded mounting bolts 3 are used to secure the columns during installation. Therefore, the bridge surface needs to be laid out according to the required number and spacing of the columns to accurately locate the holes for the subsequent pre-embedded mounting bolts 3.

[0019] Drilling S200: Based on the determined mounting hole positions, drill mounting holes with a diameter larger than the outer diameter of the mounting bolt 3. In this embodiment, the number of mounting holes corresponds to the number of holes on the column; four mounting holes are required for a single column. Since mounting bolts 3 will be inserted into these holes and anchored, the diameter of the mounting holes needs to be larger than the outer diameter of the mounting bolt 3. In this embodiment, the diameter of the mounting holes is 3-5 mm larger than the bolt diameter, and the drilling depth is determined based on the bolt diameter and the load it bears.

[0020] Bolt anchoring S300 involves filling the mounting hole with anchoring filler and then inserting the bolt into the mounting hole. In this embodiment, before bolt anchoring, the hole needs to be cleaned according to the procedure to ensure it is ready for anchoring or rebar installation. Then, the chemical anchoring agent or rebar is placed into the hole, and the bolt is quickly anchored into the hole according to the procedure.

[0021] Bolt positioning S400 positions and fixes the bolts in the mounting holes, ensuring they maintain perpendicularity and the required spacing during the anchoring curing stage. It should be noted that this step must be performed before the anchoring filler in the bolt anchoring area cures. After bolt positioning, their perpendicularity, spacing, and the mounting holes of the sound barrier columns are precisely matched, allowing the sound barrier columns to be accurately and securely installed on the bridge deck in one go. After the anchoring filler cures, the pre-embedded mounting bolts 3 are firmly inserted into the mounting holes, but this does not guarantee that the mounting bolts 3 will not loosen.

[0022] In the S500 installation of the sound barrier, the sound barrier columns are fixed to the mounting surface using the positioned bolts. Subsequently, other components of the sound barrier are installed between the columns. In this embodiment, after the above steps are completed, the pre-embedded mounting bolts 3 are ready to install the columns. Because the verticality and spacing of the bolts match the hole positions of the columns after positioning, the installation of the columns is very convenient. The mounting bolts 3 are simply tightened with nuts after passing through the mounting holes of the columns.

[0023] In a more preferred embodiment, in the bolt positioning step S400, an anchoring device 1 is provided. The anchoring device has positioning holes 11 matching the number and size of the mounting bolts 3. During bolt positioning, the anchoring device 1 is first fitted onto the mounting bolts 3, with one end of each bolt protruding from the positioning hole 11. A nut is then used to secure the protruding end of the bolt. After bolt positioning is complete, the anchoring device 1 is removed. In this embodiment, the positioning holes 11 reliably limit the spacing and perpendicularity of the mounting bolts 3, preventing them from shifting or deviating during the anchoring curing stage, ensuring that the perpendicularity and spacing of the bolts meet the requirements after curing.

[0024] In a more preferred embodiment, the anchoring device 1 is a positioning plate. During bolt positioning, a nut is first screwed into each of the mounting bolts 3, with all the nuts on the mounting bolts 3 screwed in at the same height. Then, the positioning plate is fitted onto the nuts on the mounting bolts 3. Finally, the positioning plate is locked in place with a nut at the protruding end of each mounting bolt 3. It is understood that ensuring the nuts on the mounting bolts 3 are screwed in at the same height ensures that the positioning plate remains perpendicular to each mounting bolt 3 after being installed on it. After the nuts are locked, the positioning plate can use its positioning hole to limit the movement of all the mounting bolts 3.

[0025] In a more preferred embodiment, in the bolt anchoring step S300, before the bolt is placed into the mounting hole, a base plate gasket 2 is first placed on the mounting hole with alignment. The base plate gasket 2 has a positioning hole 21 that matches the mounting hole. Then, the mounting bolt 3 is placed into the mounting hole from the positioning hole 21. After the bolt positioning step S400 is completed, the base plate gasket 2 is not removed.

[0026] In this specific embodiment, firstly, the base plate shim 2 and bolt holes are aligned and placed on the ground. Then, the chemical anchoring agent or rebar is placed into the holes. Next, the bolts are quickly anchored into the holes according to the procedure. Each bolt has a nut on top, screwed in to a depth sufficient to allow for the insertion of another nut. A 3mm thick positioning piece is placed between the two nuts. Subsequently, bolts are anchored in the diagonal holes of the already anchored bolts, again with a nut on top at the same height. The remaining two holes are then anchored in the same manner. Finally, a sound barrier positioning plate is placed on the bolts, ensuring the positioning plate is horizontal. A nut is then screwed into each of the four anchor bolts to secure the positioning plate and prevent it from flying out. Using the positioning plate and the locking effect of the top and bottom nuts to position the bolts ensures that the bolts do not tilt and that the spacing between bolts is fixed, facilitating the subsequent installation of the sound barrier columns. After the bolts have cured, the nuts and positioning plate can be loosened.

[0027] In a more preferred embodiment, in step S200, a positioning hole is first drilled using an impact drill, and then an installation hole is drilled using a water drill based on the positioning hole. When using a water drill, it is necessary to shake it from side to side to ensure that the waste cement from drilling is brought out with it. Since the surface of the water drill bit is smooth and the inner wall of the hole is also smooth, the inner wall of the hole needs to be roughened using an impact drill to increase the contact area; finally, the hole is dried. The drilling depth is determined based on the bolt diameter and the load to be borne, so a mark needs to be made at the circular tube of the water drill bit. Once the drilling depth reaches the mark, drilling stops.

[0028] In a more preferred embodiment, the positioning holes are drilled through the positioning holes 21 using the base plate shim 2. In this embodiment, after all the layout points of the line are completed, drilling begins. Drilling is carried out in two steps. The first step is to locate the points according to the layout. Using an impact drill and the base plate shim 2, the base plate shim 2 is placed at the layout point position. Then, the impact drill is used to drill holes 5-10mm deep at the four positioning holes 21 on the base plate to ensure that the subsequent drilling position does not deviate. The second step is to continue drilling downwards using a water drill according to the hole position determined in the first step. The hole diameter is 3-5mm larger than the bolt.

[0029] This embodiment also relates to an anchoring device for the construction of a double-sided sound-absorbing superstructure near-rail sound barrier, including a positioning plate 12 and a base plate 2 arranged in parallel. Positioning hole 11 is formed on the positioning plate 12, and positioning hole 21 is formed on the base plate 2. The positioning holes 11 and 21 are coaxial. The coaxial positioning holes 11 and 21 limit the movement of the mounting bolts 3, ensuring that their verticality and spacing meet the requirements. Simultaneously, positioning hole 21 can also serve as a pre-positioning hole when drilling the mounting holes, ensuring that the drilling position conforms to the layout point.

[0030] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A construction method for a double-sided sound-absorbing superstructure near-rail sound barrier, characterized in that, Includes the following steps: Layout the points S100 on the installation surface and determine the positions of the mounting holes according to the required installation location of the sound barrier; Drill hole S200: Drill a mounting hole according to the determined mounting hole position, wherein the diameter of the mounting hole is larger than the outer diameter of the mounting bolt; Bolt anchoring S300 involves filling the mounting hole with anchoring filler and inserting the bolt into the mounting hole; Bolt positioning S400 positions and fixes the bolts in the mounting holes, ensuring that the bolts maintain verticality and the required spacing between them during the anchoring and curing stage. The S500 sound barrier installation involves fixing the sound barrier columns to the mounting surface using the positioned bolts, and then installing the other components of the sound barrier between the columns.

2. The construction method of the double-sided sound-absorbing superstructure near-rail sound barrier as described in claim 1, characterized in that, In the bolt positioning step S400, an anchoring device (1) is provided. The anchoring device has a positioning hole (11) that matches the number and size of the installation bolts. When positioning the bolts, the anchoring device (1) is first placed on the installation bolts, and one end of the installation bolt extends out from the positioning hole (11). The extended end of the installation bolt is fixed with a nut. After the bolt positioning is completed, the anchoring device (1) is removed.

3. The construction method of the double-sided sound-absorbing superstructure near-rail sound barrier as described in claim 2, characterized in that, The anchoring device (1) is a positioning plate. When positioning the bolts, first screw a nut into the mounting bolts, and screw all the nuts into the mounting bolts at the same height. Then, put the positioning plate on the nuts screwed into the mounting bolts. Finally, lock the positioning plate with a nut at the protruding end of the mounting bolts.

4. The construction method of the double-sided sound-absorbing superstructure near-rail sound barrier as described in claim 3, characterized in that, In the bolt anchoring step S300, before the bolt is placed into the mounting hole, a base plate gasket (2) is first placed on the mounting hole and aligned. The base plate gasket (2) has a positioning hole two (21) that matches the mounting hole. Then the mounting bolt is placed into the mounting hole from the positioning hole two (21). After completing the bolt positioning S400 step, the base plate gasket (2) is not removed.

5. The construction method of the double-sided sound-absorbing superstructure near-rail sound barrier as described in claim 4, characterized in that, In step S200, a positioning hole is first drilled using an impact drill, and then an installation hole is drilled using a water drill based on the positioning hole.

6. The construction method of the double-sided sound-absorbing superstructure near-rail sound barrier as described in claim 5, characterized in that, After drilling the installation hole, roughen the inner wall of the hole using a water drill.

7. The construction method of the double-sided sound-absorbing superstructure near-rail sound barrier as described in claim 5, characterized in that, Using the base plate pad (2), the positioning hole is drilled through the positioning hole two (21).

8. The construction method of the double-sided sound-absorbing superstructure near-rail sound barrier as described in claim 5, characterized in that, When drilling with a water drill, mark the drill bit with scale lines to control the drilling depth.

9. The construction method of the double-sided sound-absorbing superstructure near-rail sound barrier as described in claim 3, characterized in that, After the bolt positioning is completed, the positioning plate is removed after the nuts on the positioning plate are removed; then the sound barrier installation step S500 is performed.

10. An anchoring device for the construction of a double-sided sound-absorbing superstructure near-rail sound barrier, characterized in that, It includes a positioning plate (12) and a base plate gasket (2) arranged in parallel. A positioning hole 1 (11) is opened on the positioning plate (12) and a positioning hole 2 (21) is opened on the base plate gasket (2). The positioning hole 1 (11) and the positioning hole 2 (21) are coaxial.

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