Fabricated sound barrier for rail transit

Abstract

The invention relates to an assembly type sound barrier for rail transit, and belongs to the technical field of assembly type buildings, the assembly type sound barrier comprises a plurality of groups of precast piles, the precast piles are arranged in two rows in the rail direction, the top elevation of the precast piles is higher than that of an original roadbed, and each group of precast piles are jointly connected with a bearing foundation; a prefabricated structure column is arranged on each bearing foundation, a prefabricated side sound barrier plate is arranged between every two adjacent prefabricated structure columns, the prefabricated side sound barrier plates and the prefabricated structure columns are connected through connecting assemblies, spaces are reserved between the prefabricated side sound barrier plates and the prefabricated structure columns, and the spaces are filled with flexible filling layers. A barrier top structure is jointly installed on the tops of the multiple prefabricated structure columns. The sound barrier has the effects of improving the long-term stability of the upper structure, prolonging the service life of the sound barrier and improving the sound insulation stability of the sound barrier.

Description

Technical Field

[0001] The present application relates to the technical field of prefabricated buildings, and in particular to a prefabricated sound barrier for rail transit. Background Art

[0002] With the rapid development of rail transit and highways, the noise caused by the operation of cars and trains has seriously affected the normal lives of residents along the road. In order to reduce the impact of noise, sound barriers are often installed on both sides of transportation routes such as roads and railways to weaken the noise transmitted to nearby residential areas through sound barriers.

[0003] In the existing sound barrier construction process, the sound barrier foundation construction mostly adopts the cast-in-place pile foundation method. The construction of cast-in-place pile foundation usually requires excavation of the original roadbed. Although this method can meet the bearing requirements, the excavation construction may have an adverse effect on the stability of the roadbed, especially when dealing with deep foundations. Excavation too deep may cause disturbance or even instability of the original roadbed. Once the roadbed is disturbed, the bearing capacity of the foundation will decrease, causing the upper structure to settle, tilt or lateral displacement under long-term stress. Since the upper structure is closely connected to the pile foundation and the pedestal, the instability of the foundation will cause the deformation of the upper structure, causing the sound insulation board to be squeezed or stretched during use, cracking, deformation and other problems, which will directly affect the sound insulation effect and life of the sound barrier. Summary of the invention

[0004] In order to improve the long-term stability of the superstructure, extend the service life of the sound barrier and improve the sound insulation stability of the sound barrier, the present application provides an assembled sound barrier for rail transit.

[0005] The present application provides an assembled sound barrier for rail transit using the following technical solution: An assembled sound barrier for rail transit, comprising several groups of prefabricated piles, wherein the groups of prefabricated piles are arranged in two rows along the track direction, the top elevation of the prefabricated piles is higher than the original roadbed elevation, each group of the prefabricated piles is commonly connected to a bearing foundation, each of the bearing foundations is provided with a prefabricated structural column, prefabricated side sound baffles are provided between adjacent prefabricated structural columns, the prefabricated side sound baffles are connected to the prefabricated structural columns by a connecting assembly, a space is left between the prefabricated side sound baffles and the prefabricated structural columns and is filled with a flexible filling layer, and a barrier top structure is commonly installed on the tops of several of the prefabricated structural columns.

[0006] By adopting the above technical solution, firstly, the design of prefabricated piles and driving them directly into the foundation avoids the common roadbed excavation problem in cast-in-place pile foundation construction, maintains the original stability of the roadbed, reduces the impact on the roadbed, further improves the stability of the superstructure, reduces the risk of settlement or deformation caused by improper roadbed treatment, and thus reduces the problems of cracking and deformation of the prefabricated side sound barrier, which is conducive to improving the stability of the sound insulation effect and extending the service life of the sound barrier; Secondly, the top elevation of the prefabricated piles is set higher than the original roadbed elevation, and the prefabricated structural columns are connected through the bearing foundation, which effectively shortens the length of the prefabricated structural columns. The short column structure has a higher lateral stiffness and can better resist the lateral wind load, aerodynamic force generated by the train, and other forces, thereby further improving the stability of the overall sound barrier structure and reducing the deformation of the prefabricated structural columns caused by lateral forces during long-term use, which squeezes / stretches the prefabricated side sound baffles, further extending the structural life and improving the stability of the sound insulation effect; At the same time, a certain space is left between the prefabricated side sound baffle and the prefabricated structural column, and the design of filling with a flexible filling layer ensures that even if the structural column is slightly deformed when subjected to lateral force, the prefabricated side sound baffle will not be directly squeezed or stretched, thereby reducing the cracking or deformation of the prefabricated side sound baffle caused by external force. The buffering effect of the flexible filling layer greatly improves the durability of the sound insulation system and extends the service life of the sound barrier; The top structure of the barrier plays a role in enhancing the stability of the sound barrier system. The top structure of the barrier helps to further disperse and conduct external loads (such as wind load, train aerodynamics, etc.), reduce the risk of excessive stress on a single component, thereby enhancing the wind resistance and earthquake resistance of the entire sound barrier. It is also helpful to reduce the loosening and cracking of the prefabricated side sound baffles caused by structural deformation, thereby extending the sound insulation life of the sound barrier. Moreover, by installing the top structure of the barrier, noise leakage or diffraction from the top can be effectively reduced, further improving the sound insulation performance of the sound barrier.

[0007] Moreover, the use of prefabricated components for assembly construction can effectively shorten the construction period, reduce the time for on-site pouring and curing, and make the construction process more efficient and convenient. At the same time, the assembled structure can be easily replaced and repaired in later maintenance, which improves the maintainability of the overall structure.

[0008] Optionally, the prefabricated side sound baffle comprises a plurality of sound-absorbing baffles, and the plurality of sound-absorbing baffles are stacked to form a plurality of groups, an interlayer secondary beam is arranged between two adjacent groups of the sound-absorbing baffles, and a first support seat for supporting the interlayer secondary beam is arranged on the opposite side of the adjacent prefabricated structural columns, the first support seat is fixedly connected to the interlayer secondary beam, and the thickness of the interlayer secondary beam and the first support seat is greater than the thickness of the sound-absorbing baffle; The connecting assembly is used to connect the end of each sound-absorbing baffle with the adjacent prefabricated structural column and leave a space, and the flexible filling layer is arranged between the end of the sound-absorbing baffle and the side of the prefabricated structural column and between the end of the interlayer secondary beam and the side of the prefabricated structural column.

[0009] By adopting the above technical solution, firstly, a plurality of sound-absorbing baffles are designed. The sound-absorbing baffles are usually ALC boards or concrete boards with sound-absorbing cotton embedded in them. Such boards are usually lightweight and easy to install quickly. Secondly, the setting of interlayer secondary beams solves the problem of insufficient structural force caused by the lightweight design of the sound-absorbing baffles. It not only retains the lightweight advantage of the sound-absorbing partition, but also enhances the overall compression, bending and wind resistance of the structure by setting interlayer secondary beams, significantly improving the stability and durability of the sound barrier.

[0010] Optionally, the connecting assembly includes a plurality of angle steels, and the prefabricated structural column is provided with a plurality of first embedded plates along its height direction. The plurality of angle steels are arranged along the height direction of the prefabricated structural column, and each angle steel is connected to a plurality of the first embedded plates. At least two hook head bolts are passed through the end of the sound-absorbing partition, and the hook head bolt is L-shaped. A fastening nut is threadedly connected to one end of the hook head bolt, and the fastening nut is pressed against the sound-absorbing partition, and the other end of the hook head bolt is pressed against the angle steel, so that the sound-absorbing partition is pressed against the angle steel.

[0011] By adopting the above technical solution, the sound-absorbing baffle can be fixed and aligned by simply adjusting the fastening nut during installation, reducing the need for on-site welding or complex connectors, and improving installation speed and operational convenience. At the same time, the hook bolt can adjust the tightness between the sound-absorbing baffle and the angle steel within a certain range, ensuring that fine-tuning can be performed during the installation process to ensure that the sound-absorbing baffle is flat and tight.

[0012] The connection design of the hook bolt and the fastening nut makes the subsequent maintenance and replacement easier. When the sound-absorbing partition needs to be replaced, the hook bolt can be loosened by simply removing the nut, avoiding the complicated operation of removing the embedded plate or angle steel.

[0013] Optionally, a first temporary support assembly is provided between adjacent prefabricated structural columns, and the first temporary support assembly is used to laterally support the prefabricated structural column along the track direction before installing the prefabricated side sound baffle; Each of the prefabricated structural columns and the corresponding bearing foundation are jointly provided with a second temporary support assembly, and the second temporary support assembly is used to provide longitudinal support to the prefabricated structural column in the vertical direction before installing the prefabricated side sound baffle.

[0014] By adopting the above technical solution, the first temporary support assembly can effectively limit the lateral displacement of the prefabricated structural column, ensure that the column remains stable before the sound baffle is installed, and prevent tilting and displacement. The second temporary support assembly can effectively control the vertical deformation and tilt of the prefabricated structural column before the sound baffle is installed, ensure that the column remains vertical, improve the safety and reliability of the construction process, and help ensure that the prefabricated side sound baffle is accurately aligned with the prefabricated structural column during assembly, thereby improving the overall structural stability and assembly accuracy.

[0015] Optionally, the first temporary support assembly includes two first diagonal support screw rods, both ends of the first diagonal support screw rods are threadedly connected to first telescopic sleeves, the first telescopic sleeves are hinged with first abutment pads, the first abutment pads are abutted against the side of the prefabricated structural column, and the two first diagonal support screw rods are connected by a cross buckle; The second temporary support assembly includes a support rod, which is horizontally arranged on the top of the bearing foundation. The support rod is vertically connected to an abutment rod, which abuts against the circumferential surface of the bearing foundation. The abutment rod is hinged with a second telescopic sleeve, the second telescopic sleeve is threadedly connected to a second diagonal support screw, the second diagonal support screw is hinged to a second clamping pad, the second clamping pad abuts against the prefabricated structural column, the abutment rod is vertically connected to a third telescopic sleeve, the third telescopic sleeve is threadedly connected to a transverse support screw, the transverse support screw is connected to a third clamping pad, and the third clamping pad abuts against the prefabricated structural column.

[0016] By adopting the above technical solution, the two first telescopic sleeves are rotated to make the two first abutting pads abut against the two prefabricated structural columns respectively, and the two first diagonal support screws are connected by a cross fastener to form a cross support. The support rod is placed on the top of the bearing foundation, and then the second diagonal support screw is rotated to make the second abutting pad abut against the prefabricated structural column, and then the third diagonal support screw is rotated to make the third abutting pad abut against the prefabricated structural column, which is convenient for construction.

[0017] Optionally, the barrier top structure comprises prefabricated longitudinal beams, prefabricated middle span beams, prefabricated side span beams and double T-plates, the prefabricated structural columns are provided with second support seats for supporting the prefabricated middle span beams / the prefabricated side span beams, the prefabricated structural columns are provided with third support seats, and the third support seats and the prefabricated structural columns jointly support the prefabricated longitudinal beams; There are several double T-plates, and several double T-plates are arranged between two adjacent prefabricated middle-span beams and between the prefabricated side-span beams and the prefabricated middle-span beams. The adjacent double T-plates are spliced ​​with each other, and the adjacent double T-plates are jointly provided with a first sealing member. The prefabricated longitudinal beam and the double T-plates adjacent to it are jointly provided with a second sealing member. The prefabricated side-span beams, the prefabricated longitudinal beams, the prefabricated middle-span beams and the double T-plates jointly enclose a casting space for a top plate.

[0018] By adopting the above technical solution, the design of prefabricated mid-span beams, prefabricated side span beams and double T-plates greatly improves the assembly rate of the entire sound barrier top structure and enhances construction efficiency.

[0019] The first sealing piece is located between adjacent double T-plates, and the second sealing piece is located between the prefabricated longitudinal beam and the adjacent double T-plate, which is used to pre-fix multiple double T-plates during the hoisting process. The double T-plates can be initially positioned and fixed during the hoisting process to prevent them from shifting during hoisting and installation, ensuring the accuracy and stability of the installation. In addition, the first sealing piece and the second sealing piece can effectively prevent slurry leakage during the subsequent cast-in-place top slab pouring process.

[0020] In addition, the double T-plate has the advantages of light weight, high rigidity and strong bearing capacity, which is beneficial to improve the overall rigidity of the top structure of the barrier as well as its impact resistance and deformation resistance, thereby reducing cracking, ensuring stability and sound insulation effects during long-term use, and effectively extending the service life of the sound barrier.

[0021] Optionally, the first sealing member includes a sealing plate, a second embedded plate is arranged on the top of the double T plate, the length of the sealing plate is the same as that of the double T plate, the sealing plate covers the joint between two adjacent double T plates, and the sealing plate is fixed to the second embedded plate; The second sealing member comprises a Z-shaped connecting plate, which is installed on the prefabricated longitudinal beam and abuts against the end of the prefabricated longitudinal beam. The top of the Z-shaped connecting plate covers the top of the double T plate and the two are fixed to each other.

[0022] By adopting the above technical solutions, the design of the sealing plate and the Z-type connecting plate can significantly improve the efficiency and accuracy of construction through the standardized splicing of prefabricated components and simple on-site fixing. Especially during the hoisting and installation process, the two can ensure the splicing accuracy of the double T plate and the prefabricated longitudinal beam, reduce the workload of later adjustment and correction, and improve the construction progress.

[0023] Optionally, two adjacent prefabricated side span beams are jointly covered with a C-shaped cover plate, wherein the top of one of the prefabricated side span beams is fixedly connected to the C-shaped cover plate, and the C-shaped cover plate is slidably arranged on the top of the other prefabricated side span beam.

[0024] By adopting the above technical solution, in the segmented construction of the sound barrier structure, the C-type cover can cover the gap between the two prefabricated side span beams to protect the gap from external environmental influences (such as rainwater, debris intrusion), and the sliding setting of the C-type cover also allows the two prefabricated side span beams to have a certain displacement / expansion space, ensuring that the gap between the two prefabricated side span beams still has the effect of coping with the stress caused by temperature changes, settlement, earthquakes and other factors, and preventing the structure from cracking or damage.

[0025] Optionally, the prefabricated structural column is provided with a fourth support seat, and the fourth support seats of the prefabricated structural columns in the same row are commonly installed with a slide rail, and the two slide rails jointly slide and support a protective shed, and rolling shafts are provided at both ends of the protective shed, and the rolling shafts are slidably set on the slide rails, and the protective shed is located below the top structure of the barrier, the slide rail is provided with a plurality of sections, and a plurality of protective sheds are provided, each of the protective sheds corresponds to each section of the slide rail, and adjacent protective sheds are connected by protective cover plates.

[0026] By adopting the above technical scheme, the protective shed is used to prevent the railway from being damaged by factors such as sporadic corner loss of prefabricated components, leakage of concrete during the construction of the post-cast overlapping layer, and continuous rain lines formed by rainfall. The segmented design of the protective shed facilitates the disassembly and replacement of the damaged section separately, and the design of the slide rail and rolling shaft facilitates the installation and disassembly of the protective shed, thereby shortening the construction time.

[0027] Optionally, the prefabricated structural column includes a plurality of prefabricated column segments, and adjacent prefabricated column segments are connected by grouting through a grouting sleeve.

[0028] By adopting the above technical solution, due to the segmented design of prefabricated column segments, the construction site has lower requirements for equipment and construction conditions. Especially in narrow or traffic-restricted rail transit projects, the hoisting and connection of each prefabricated column segment can be easily achieved, reducing the use of large equipment and improving construction flexibility.

[0029] In summary, the present application includes at least one of the following beneficial technical effects: 1. The design of using prefabricated piles and driving them directly into the foundation avoids the common roadbed excavation problem in cast-in-place pile foundation construction, maintains the original stability of the roadbed, reduces the impact on the roadbed, further improves the stability of the superstructure, and reduces the risk of settlement or deformation caused by improper roadbed treatment, thereby reducing the cracking and deformation of the prefabricated side sound barrier, which is conducive to improving the stability of the sound insulation effect and extending the service life of the sound barrier; 2. The top elevation of the prefabricated piles is set higher than the original roadbed elevation, and the prefabricated structural columns are connected through the bearing foundation, which effectively shortens the length of the prefabricated structural columns. The short column structure has a higher lateral stiffness and can better resist the lateral wind load, aerodynamic force generated by the train, and other forces, thereby further improving the stability of the overall sound barrier structure and reducing the deformation of the prefabricated structural columns caused by the lateral force during long-term use, which squeezes / stretches the prefabricated side sound barrier, further extending the structural life and improving the stability of the sound insulation effect; 3. A certain space is left between the prefabricated side sound baffle and the prefabricated structural column, and the design of filling with a flexible filling layer ensures that even if the structural column is slightly deformed when subjected to lateral force, the prefabricated side sound baffle will not be directly squeezed or stretched, thereby reducing the cracking or deformation of the prefabricated side sound baffle caused by external force. The buffering effect of the flexible filling layer greatly improves the durability of the sound insulation system and extends the service life of the sound barrier; 4. The top structure of the barrier plays a role in enhancing the stability of the sound barrier system. The top structure of the barrier helps to further disperse and conduct external loads (such as wind loads, train aerodynamics, etc.), reduce the risk of excessive stress on a single component, thereby enhancing the wind resistance and earthquake resistance of the entire sound barrier. It is also helpful to reduce the loosening and cracking of the prefabricated side sound baffles caused by structural deformation, thereby extending the sound insulation life of the sound barrier. Moreover, by installing the top structure of the barrier, the leakage or diffraction of noise from the top can be effectively reduced, further improving the sound insulation performance of the sound barrier; 5. The use of prefabricated components for assembly construction can effectively shorten the construction period, reduce the time for on-site pouring and curing, and make the construction process more efficient and convenient. At the same time, the assembled structure can be easily replaced and repaired in later maintenance, which improves the maintainability of the overall structure; 6. The first temporary support assembly can effectively limit the lateral displacement of the prefabricated structural column, ensuring that the column remains stable before the sound baffle is installed, and preventing tilting and displacement. The second temporary support assembly can effectively control the vertical deformation and tilt of the prefabricated structural column before the sound baffle is installed, ensuring that the column remains vertical, improving the safety and reliability of the construction process, and ensuring that the prefabricated side sound baffle is accurately aligned with the prefabricated structural column during assembly, improving the overall structural stability and assembly accuracy; 7. The design of prefabricated middle span beams, prefabricated side span beams and double T-plates greatly improves the assembly rate of the entire sound barrier top structure and improves construction efficiency. At the same time, the double T-plates have the advantages of light weight, high rigidity and strong bearing capacity, which is conducive to improving the rigidity, impact resistance and deformation resistance of the barrier top structure as a whole, thereby reducing cracking, ensuring stability and sound insulation effect during long-term use, and effectively extending the service life of the sound barrier; 8. In the segmented sound barrier structure, the C-type cover can cover the gap between the two prefabricated side span beams to protect the gap from external environmental influences (such as rainwater and debris intrusion), and the sliding setting of the C-type cover also allows the two prefabricated side span beams to have a certain displacement / expansion space, ensuring that the gap between the two prefabricated side span beams can still cope with the stress caused by temperature changes, settlement, earthquakes and other factors, and prevent the structure from cracking or damage; 9. The protective shed is used to prevent the railway from being damaged by factors such as sporadic corner loss of prefabricated components, leakage of concrete during the construction of the post-poured overlapping layer, and continuous rain lines formed by rainfall. The segmented design of the protective shed facilitates the disassembly and replacement of the damaged section separately, and the design of the slide rail and rolling shaft facilitates the installation and disassembly of the protective shed, shortening the construction time. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0031] Figure 2 It is a schematic diagram of the structure of the sound-absorbing partition and the connecting components used in the embodiment of the present application.

[0032] Figure 3 yes Figure 2 Enlarged schematic diagram of part A.

[0033] Figure 4 It is a schematic diagram of the structure of the fastening nut used in the embodiment of the present application.

[0034] Figure 5 It is a schematic diagram of the structure of the embodiment of the present application, which is used to reflect the prefabricated longitudinal beams, prefabricated mid-span beams, double T-plates and prefabricated side span beams.

[0035] Figure 6 It is a structural schematic diagram used to reflect the top structure of the barrier in an embodiment of the present application.

[0036] Figure 7 It is a structural schematic diagram of an embodiment of the present application for reflecting the double T-plate arrangement and the protective shed.

[0037] Figure 8 yes Figure 7 Schematic diagram of the enlarged portion B.

[0038] Fig. 9 It is a schematic diagram of the structure of the C-type cover plate and the polytetrafluoroethylene sliding layer used in the embodiment of the present application.

[0039] Fig.10 yes Figure 7 Enlarged schematic diagram of part C.

[0040] Fig.11It is a schematic diagram of the structure of the protective cover plate used to reflect the embodiment of the present application.

[0041] Fig.12 It is a structural schematic diagram of the first temporary support assembly used in an embodiment of the present application.

[0042] Fig.13 It is a structural schematic diagram of the second temporary support assembly used in an embodiment of the present application.

[0043] Explanation of the reference numerals: 11. transition section; 12. main line section; 21. precast piles; 22. bearing foundation; 221. triangular pedestal; 222. rectangular pedestal; 223. square pedestal; 3. precast structural column; 31. first support seat; 32. second support seat; 33. third support seat; 34. fourth support seat; 35. precast column section; 4. precast side sound barrier; 41. flexible filling layer; 42. sound-absorbing partition; 43. interlayer secondary beam; 5. connection assembly; 51. angle steel; 52. first embedded plate; 53. hook bolt; 54. fastening nut; 6. barrier top structure; 61. precast longitudinal beam; 62. precast middle span beam; 621. cantilever; 63. precast side span beam; 631. Parapet; 64, double T-plate; 65, first sealing member; 651, sealing plate; 652, second embedded plate; 66, second sealing member; 661, Z-type connecting plate; 67, cast-in-place top plate; 68, C-type cover plate; 681, polytetrafluoroethylene sliding layer; 71, slide rail; 72, protective shed; 73, rolling shaft; 74, protective cover plate; 8, first temporary support assembly; 81, first diagonal support screw; 82, first telescopic sleeve; 83, first abutment pad; 9, second temporary support assembly; 91, support rod; 92, abutment rod; 93, second telescopic sleeve; 94, second diagonal support screw; 95, second abutment pad; 96, third telescopic sleeve; 97, transverse support screw; 98, third abutment pad. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1-13 This application is described in further detail.

[0045] An embodiment of the present application discloses an assembled sound barrier for rail transit.

[0046] like Figure 1 The assembled sound barrier for rail transit includes a transition section 11 (also called a deceleration section / arrival section) and a main line section 12 (also called a line section). Both the transition section 11 and the main line section 12 include a plurality of groups of precast piles 21. The plurality of groups of precast piles 21 are arranged in two rows along the track. The spacing between the two rows of precast piles 21 in the transition section 11 is smaller than the spacing between the two rows of precast piles 21 in the main line section 12. In the transition section 11, each group of precast piles 21 is arranged at equal distances. The main line section 12 is divided into multiple construction sections. Each group of precast piles 21 in each construction section is arranged at equal distances. The top elevation of the precast piles 21 is higher than the original roadbed elevation. Each group of precast piles 21 is commonly connected to a bearing foundation 22. The bearing foundation 22 includes a triangular support 221, a rectangular support 222 and a square support 223; In the transition section 11 , the number of precast piles 21 in each group of precast piles 21 is three, and the three precast piles 21 are connected together to a triangular cap 221 ; At the junction of the transition section 11 and the main line section 12, the number of precast piles 21 in each group of precast piles 21 is five, and the five precast piles 21 are connected to a rectangular cap 222; In each construction section of the main line section 12, the number of precast piles 21 in each group of precast piles 21 is three, and the three precast piles 21 are commonly connected to a triangular cap 221; At the junction of two adjacent construction sections of the main line section 12 , the number of precast piles 21 in each group is four, and the four precast piles 21 are commonly connected to a square cap 223 .

[0047] A prefabricated structural column 3 is installed on each triangular platform 221, and two prefabricated structural columns 3 are installed on each rectangular platform 222 and square platform 223. One prefabricated structural column 3 of the rectangular platform 222 is arranged side by side with other prefabricated structural columns 3 of the transition section 11, and another prefabricated structural column 3 of the rectangular platform 222 is arranged side by side with other prefabricated structural columns 3 of the main line section 12.

[0048] like Figure 1 , Figure 2 and Figure 3 A prefabricated side sound baffle 4 is arranged between the prefabricated structural columns 3 of two adjacent triangular pedestals 221, and a prefabricated side sound baffle 4 is arranged between the two prefabricated structural columns 3 of the rectangular pedestal 222 in the same row and between the adjacent prefabricated structural columns 3. The prefabricated side sound baffle 4 is connected to the prefabricated structural column 3 by a connecting assembly 5, and a space is left between the prefabricated side sound baffle 4 and the prefabricated structural column 3 and is filled with a flexible filling layer 41. A barrier top structure 6 is installed on the top of all the prefabricated structural columns 3 of the transition section 11, and a barrier top structure 6 is also installed on the top of each construction section of the main line section 12.

[0049] The design of adopting prefabricated piles 21 and driving them directly into the foundation avoids the common roadbed excavation problem in cast-in-place pile foundation construction, maintains the original stability of the roadbed, reduces the impact on the roadbed, further improves the stability of the superstructure, and reduces the risk of settlement or deformation caused by improper roadbed treatment, thereby reducing the occurrence of cracking, deformation and other problems of the prefabricated side sound baffle 4, which is beneficial to improving the stability of the sound insulation effect and extending the service life of the sound barrier.

[0050] Secondly, the top elevation of the prefabricated pile 21 is set higher than the original roadbed elevation, and the prefabricated structural column 3 is connected through the bearing foundation 22, which effectively shortens the length of the prefabricated structural column 3. The short column structure has a high lateral stiffness and can better resist the lateral wind load, aerodynamic force generated by the train and other forces, thereby further improving the stability of the overall sound barrier structure, reducing the deformation of the prefabricated structural column 3 caused by the lateral force in long-term use, and squeezing / stretching the prefabricated side sound baffle 4, further extending the structural life and improving the stability of the sound insulation effect.

[0051] At the same time, a certain space is left between the prefabricated side sound baffle 4 and the prefabricated structural column 3, and the design of filling the flexible filling layer 41 ensures that even if the structural column is slightly deformed when subjected to lateral force, the prefabricated side sound baffle 4 will not be directly squeezed or stretched, thereby reducing the cracking or deformation of the prefabricated side sound baffle 4 caused by external force. The buffering effect of the flexible filling layer 41 greatly improves the durability of the sound insulation system and extends the service life of the sound barrier.

[0052] The barrier top structure 6 plays a role in enhancing the stability of the sound barrier system. The barrier top structure 6 helps to further disperse and conduct external loads (such as wind loads, train aerodynamics, etc.), reduce the risk of excessive stress on a single component, thereby enhancing the wind resistance and earthquake resistance of the entire sound barrier. It is also helpful to reduce the loosening and cracking of the prefabricated side sound baffles 4 caused by structural deformation, thereby extending the sound insulation life of the sound barrier. In addition, by installing the barrier top structure 6, noise leakage or diffraction from the top can be effectively reduced, further improving the sound insulation performance of the sound barrier.

[0053] Moreover, the use of prefabricated components for assembly construction can effectively shorten the construction period, reduce the time for on-site pouring and curing, and make the construction process more efficient and convenient. At the same time, the assembled structure can be easily replaced and repaired in later maintenance, which improves the maintainability of the overall structure.

[0054] like Figure 2 , Figure 3 and Figure 4 Two first support seats 31 are arranged on opposite sides of adjacent prefabricated structural columns 3. The first support seats 31 are concrete corbels. The two first support seats 31 are arranged along the height direction of the prefabricated structural columns 3, and the two first support seats 31 at the same height are arranged opposite to each other.

[0055] The prefabricated side sound baffle 4 includes a plurality of sound-absorbing baffles 42 and two interlayer secondary beams 43. In the embodiment of the present application, a plurality of sound-absorbing baffles 42 between two adjacent prefabricated structural columns 3 are stacked to form three groups, and the seat mortar method is used for construction. The first group of sound-absorbing baffles 42 is supported on two bearing foundations 22. In other embodiments, a cast-in-place reverse beam can also be formed on the bearing foundation 22, and the first group of sound-absorbing baffles 42 is supported on the cast-in-place reverse beam. An interlayer secondary beam 43 is set on a pair of first support seats 31 adjacent to the first group of sound-absorbing baffles 42, and a second group of sound-absorbing baffles 42 is set on the interlayer secondary beam 43. The seat mortar method is also used between the sound-absorbing baffles 42 and the interlayer secondary beam 43. Another interlayer secondary beam 43 is set on a pair of first support seats 31 adjacent to the second group of sound-absorbing baffles 42, and a third group of sound-absorbing baffles 42 is set on the interlayer secondary beam 43. The top elevation of the third group of sound-absorbing baffles 42 is flush with the top elevation of the prefabricated structural column 3.

[0056] A space is left between the end of each sound-absorbing partition 42 and the side of the prefabricated structural column 3, and between the end of the interlayer secondary beam 43 and the side of the prefabricated structural column 3, and the flexible filling layer 41 is arranged between the end of the sound-absorbing partition 42 and the side of the prefabricated structural column 3, and between the end of the interlayer secondary beam 43 and the side of the prefabricated structural column 3; The end of each sound-absorbing partition 42 is connected to the prefabricated structural column 3 through a connecting assembly 5, and each interlayer secondary beam 43 is connected to the first support seat 31 by a corbel hinge (i.e., pre-embedded rebar and reserved holes for plugging and grouting). The thickness of the interlayer secondary beam 43 and the first support seat 31 is greater than the thickness of the sound-absorbing partition 42. In the embodiment of the present application, the material of the sound-absorbing partition 42 within five meters above the top of the rail is ALC sound screen board, and the material of the sound-absorbing partition 42 within other height ranges is SP prestressed hollow board. The material of the flexible filling layer 41 can be rubber / polyurethane / silicone sealant, etc.

[0057] A design of multiple sound-absorbing baffles 42 is adopted. The sound-absorbing baffles 42 are ALC sound screen panels or SP prestressed hollow panels. This type of panel is usually lightweight and convenient and quick to install. Secondly, the setting of the interlayer secondary beams 43 solves the problem of insufficient structural force caused by the lightweight design of the sound-absorbing baffles 42. Therefore, this design not only retains the advantage of the lightweight sound-absorbing baffles 42, but also enhances the overall compression, bending and wind resistance of the structure by setting the interlayer secondary beams 43, thereby significantly improving the stability and durability of the sound barrier.

[0058] like Figure 2 and Figure 4The connection assembly 5 includes three angle steels 51. The prefabricated structural column 3 is provided with a plurality of first embedded plates 52 along its height direction. The three angle steels 51 are arranged along the height direction of the prefabricated structural column 3. The three angle steels 51 are respectively arranged between the bearing foundation 22 and the first support seat 31 at the bottom elevation, between the two first support seats 31, and above the first support seat 31 at the high elevation. Each angle steel 51 is welded to a plurality of first embedded plates 52.

[0059] At least two hook bolts 53 are respectively passed through the two ends of the sound-absorbing baffle 42. The hook bolt 53 is L-shaped, and one end of the hook bolt 53 is threadedly connected with a fastening nut 54. The fastening nut 54 cooperates with an anti-loosening washer to press against the sound-absorbing baffle 42. The bent section of the hook bolt 53 presses against the angle steel 51. The angle steel 51 is provided with anti-deformation stiffening ribs (not shown in the figure) in the area on both sides of the hook bolt 53. The sound-absorbing baffle 42 presses against the angle steel 51.

[0060] During installation, the sound-absorbing baffle 42 can be fixed and aligned by simply adjusting the fastening nut 54, which reduces the need for on-site welding or complex connectors and improves installation speed and operational convenience. At the same time, the hook bolt 53 can adjust the tightness between the sound-absorbing baffle 42 and the angle steel 51 within a certain range, ensuring that fine adjustments can be made during the installation process to ensure that the sound-absorbing baffle 42 is flat and fastened.

[0061] The connection design of the hook bolt 53 and the fastening nut 54 makes the later maintenance and replacement easier. When the sound-absorbing baffle 42 needs to be replaced, the hook bolt 53 can be loosened by simply removing the nut, avoiding the complicated operation of removing the first embedded plate 52 or the angle steel 51.

[0062] like Figure 2 , Figure 5 and Figure 6 The top structure 6 of the barrier includes a prefabricated longitudinal beam 61, a plurality of prefabricated middle span beams 62, two prefabricated side span beams 63 and a plurality of double T-plates 64. Second support seats 32 for supporting the prefabricated middle span beams 62 / prefabricated side span beams 63 are arranged on both sides of the prefabricated structural column 3. A third support seat 33 is arranged on the prefabricated structural column 3. The third support seat 33 and the prefabricated structural column 3 jointly support the prefabricated longitudinal beam 61. The top surfaces of the second support seat 32 and the third support seat 33 are both flush with the top surface of the prefabricated structural column 3. In the embodiment of the present application, the prefabricated longitudinal beam 61 is a variable cross-section full-length beam. The cross-sectional dimensions of the portion of the prefabricated longitudinal beam 61 facing the prefabricated structural column 3 are the same as those of the prefabricated structural column 3. The other portions of the prefabricated longitudinal beam 61 are L-shaped beams. like Figure 6 , Figure 7 and Figure 8Lugs 621 are provided on both sides of the prefabricated middle span beam 62 and on the side of the prefabricated side span beam 63 facing the prefabricated middle span beam 62. A plurality of double T-plates 64 are provided between two adjacent prefabricated middle span beams 62 and between the prefabricated side span beam 63 and the prefabricated middle span beam 62. The ends of the double T-plates 64 are protrudingly provided and rest on the lugs 621. The adjacent double T-plates 64 are spliced ​​with each other, and the adjacent double T-plates 64 are commonly provided with a first sealing member 65. The prefabricated longitudinal beam 61 and its adjacent double T-plates 64 are commonly provided with a second sealing member 66.

[0063] like Figure 1 The precast side span beam 63, precast longitudinal beam 61, precast middle span beam 62 and double T-plate 64 together enclose a casting space for a cast-in-place top slab 67. The casting space is cast with a cast-in-place top slab 67. A parapet 631 is arranged along the length direction of the precast side span beam 63 on one side away from the precast middle span beam 62.

[0064] like Figure 6 and Fig. 9 In the main line section 12, a joint is left between two adjacent barrier top structures 6, that is, a joint is left between two adjacent parapets 631, and two adjacent prefabricated side span beams 63 are jointly covered with a C-type cover plate 68, and the C-type cover plate 68 is covered on the two parapets 631. A polytetrafluoroethylene sliding layer 681 is installed on the top of one of the parapets 631 with cement nails, and the C-type cover plate 68 is supported on the polytetrafluoroethylene sliding layer 681. The other parapet 631 is connected to the C-type cover plate 68 by grouting, and the width of the C-type cover plate 68 is much larger than the distance between the inner walls of the two parapets 631.

[0065] The design of the prefabricated middle span beam 62, the prefabricated side span beam 63 and the double T-plate 64 greatly increases the assembly rate of the entire sound barrier top structure 6 and improves the construction efficiency.

[0066] The first sealing member 65 is located between adjacent double T-plates 64, and the second sealing member 66 is located between the prefabricated longitudinal beam 61 and the adjacent double T-plates 64, and is used to pre-fix the multiple double T-plates 64 during the hoisting process, and can preliminarily position and fix the double T-plates 64 during the hoisting process to prevent them from shifting during hoisting and installation, thereby ensuring the accuracy and stability of the installation. In addition, the first sealing member 65 and the second sealing member 66 can effectively prevent slurry leakage during the subsequent casting process of the cast-in-place top plate 67.

[0067] In addition, the double T-plate 64 has the advantages of light weight, high rigidity and strong bearing capacity, which is beneficial to improve the rigidity, impact resistance and deformation resistance of the barrier top structure 6 as a whole, thereby reducing cracking, ensuring stability and sound insulation effect during long-term use, and effectively extending the service life of the sound barrier.

[0068] In the segmented construction of the sound barrier structure, the C-shaped cover 68 can cover the gap between the two prefabricated side span beams 63 to protect the gap from external environmental influences (such as rainwater and debris intrusion), and the sliding setting of the C-shaped cover 68 also allows the two prefabricated side span beams 63 to have a certain displacement / expansion space, ensuring that the gap between the two prefabricated side span beams 63 still has the effect of coping with the stress caused by temperature changes, settlement, earthquakes and other factors, and preventing the structure from cracking or damage.

[0069] like Figure 5 and Figure 6 The first sealing member 65 includes a sealing plate 651. A plurality of second embedded plates 652 are arranged on the top of the double T plate 64. The plurality of second embedded plates 652 are divided into two groups. The two groups of second embedded plates 652 are arranged along the edge of the double T plate 64, and each group of second embedded plates 652 is arranged equidistantly along the length direction of the double T plate 64. The length of the sealing plate 651 is the same as that of the double T plate 64. The sealing plate 651 covers the joint between two adjacent double T plates 64, and each sealing plate 651 is welded to two adjacent groups of second embedded plates 652. like Figure 8 The second sealing member 66 includes a Z-shaped connecting plate 661, which is installed on the prefabricated longitudinal beam 61, and the Z-shaped connecting plate 661 is abutted against the portion of the prefabricated longitudinal beam 61 facing the prefabricated structural column 3. The top of the Z-shaped connecting plate 661 covers the top edge of the double T-plate 64. The Z-shaped connecting plate 661 and the prefabricated longitudinal beam 61, and the Z-shaped connecting plate 661 and the double T-plate 64 are fixed by a plurality of self-tapping screws.

[0070] like Figure 7 , Fig.10 and Fig.11 In the main line section 12, the prefabricated structural column 3 is provided with a fourth support seat 34, and the fourth support seat 34 is located between the first support seat 31 and the second support seat 32. The fourth support seats 34 of the prefabricated structural columns 3 in the same row are jointly installed with a slide rail 71, and the two slide rails 71 jointly slide and support a protective shed 72. Both ends of the protective shed 72 are provided with a plurality of rolling shafts 73, and the rolling shafts 73 are slidably arranged on the slide rail 71. The protective shed 72 is located below the double T plate 64. The slide rail 71 is provided with a plurality of sections, and the protective shed 72 is provided with a plurality of sections. The length of each section of the slide rail 71 and each protective shed 72 corresponds to the length of each construction section in the main line section 12. Each protective shed 72 corresponds to each section of the slide rail 71 one by one, and adjacent protective sheds 72 are connected by a protective cover plate 74, and the protective cover plate 74 and the protective shed 72 are connected by welding.

[0071] like Figure 2The prefabricated structural column 3 includes a plurality of prefabricated column sections 35, and adjacent prefabricated column sections 35 are connected by grouting sleeves. The specific connection method is that a pre-buried steel bar (not shown in the figure) extends from the top of the prefabricated column section 35, and a grouting sleeve (not shown in the figure) is embedded in the bottom of the prefabricated column section 35. The grouting sleeve of one prefabricated column section 35 is sleeved on the embedded steel bar of the prefabricated column section 35 below it, and the grouting sleeve is injected into the feed hole of the grouting sleeve until the grouting overflows from the discharge hole at the top of the grouting sleeve.

[0072] Due to the segmented design of the prefabricated column segment 35, the construction site has lower requirements on equipment and construction conditions. Especially in narrow or traffic-restricted rail transit projects, the prefabricated column segments 35 can be easily hoisted and connected, reducing the use of large equipment and improving construction flexibility.

[0073] like Fig.12 A first temporary support assembly 8 is provided between adjacent prefabricated structural columns 3, and the first temporary support assembly 8 is used to laterally support the prefabricated structural columns 3 along the track direction before installing the prefabricated side sound baffle 4; like Fig.13 Each prefabricated structural column 3 and the corresponding bearing foundation 22 are jointly provided with a second temporary support assembly 9, and the second temporary support assembly 9 is used to provide longitudinal support to the prefabricated structural column 3 in the vertical direction before installing the prefabricated side sound baffle 4.

[0074] like Fig.12 The first temporary support assembly 8 includes two first diagonal support screw rods 81, both ends of the first diagonal support screw rods 81 are threadedly connected with first telescopic sleeves 82, the first telescopic sleeves 82 are hinged with first abutment pads 83, the first abutment pads 83 are abutted against the side of the prefabricated structural column 3, and the two first diagonal support screw rods 81 are connected by a cross buckle; like Fig.13 The second temporary support assembly 9 includes a support rod 91, which is horizontally arranged on the top of the bearing foundation 22. The support rod 91 is vertically connected to a contact rod 92, which contacts the circumferential surface of the bearing foundation 22. The contact rod 92 is hinged with a second telescopic sleeve 93, and the second telescopic sleeve 93 is threadedly connected to a second diagonal support screw 94, and the second diagonal support screw 94 is hinged with a second clamping pad 95, which contacts the prefabricated structure column 3. The contact rod 92 is vertically connected to a third telescopic sleeve 96, and the third telescopic sleeve 96 is threadedly connected to a transverse support screw 97, and the transverse support screw 97 is connected to a third clamping pad 98, which contacts the prefabricated structure column 3.

[0075] The implementation principle of the embodiment of the present application is: the design of using prefabricated piles 21 and driving them directly into the foundation avoids the common roadbed excavation problem in cast-in-place pile foundation construction, maintains the original stability of the roadbed, reduces the impact on the roadbed, and further improves the stability of the superstructure. In addition, the top elevation of the prefabricated pile 21 is set higher than the original roadbed elevation, and the prefabricated structure column 3 is connected through the bearing foundation 22, which effectively shortens the length of the prefabricated structure column 3. The short column structure has a high lateral stiffness and can better resist the lateral wind load, the aerodynamic force generated by the train and other forces. At the same time, a certain space is left between the prefabricated side sound baffle 4 and the prefabricated structure column 3, and the design of filling the flexible filling layer 41 makes it possible that even if the prefabricated structure column 3 is slightly deformed when subjected to lateral force, the prefabricated side sound baffle 4 will not be directly squeezed or stretched, thereby reducing the cracking or deformation of the prefabricated side sound baffle 4 caused by external force. Combining the above characteristics, the long-term stability of the superstructure is greatly improved as a whole, the service life of the sound barrier is extended, and the sound insulation stability of the sound barrier is improved.

[0076] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An assembled sound barrier for rail transit, characterized in that: The invention comprises a plurality of groups of prefabricated piles (21), wherein the plurality of groups of the prefabricated piles (21) are arranged in two rows along the track direction, the top elevation of the prefabricated piles (21) is higher than the original roadbed elevation, each group of the prefabricated piles (21) is connected to a bearing foundation (22), each bearing foundation (22) is provided with a prefabricated structural column (3), a prefabricated side sound baffle (4) is provided between adjacent prefabricated structural columns (3), the prefabricated side sound baffle (4) is connected to the prefabricated structural column (3) through a connecting assembly (5), a space is left between the prefabricated side sound baffle (4) and the prefabricated structural column (3) and is filled with a flexible filling layer (41), and a barrier top structure (6) is installed on the top of the plurality of prefabricated structural columns (3).

2. The assembled sound barrier for rail transit according to claim 1, characterized in that: The prefabricated side sound baffle (4) comprises a plurality of sound-absorbing baffles (42), wherein the plurality of sound-absorbing baffles (42) are stacked to form a plurality of groups, an interlayer secondary beam (43) is arranged between two adjacent groups of the sound-absorbing baffles (42), and a first support seat (31) for supporting the interlayer secondary beam (43) is arranged on the opposite side of the adjacent prefabricated structural columns (3), the first support seat (31) is fixedly connected to the interlayer secondary beam (43), and the thickness of the interlayer secondary beam (43) and the first support seat (31) is greater than the thickness of the sound-absorbing baffle (42); The connecting assembly (5) is used to connect the end of each sound-absorbing baffle (42) with the adjacent prefabricated structural column (3) and leave a space therebetween; the flexible filling layer (41) is arranged between the end of the sound-absorbing baffle (42) and the side of the prefabricated structural column (3), and between the end of the interlayer secondary beam (43) and the side of the prefabricated structural column (3).

3. The assembled sound barrier for rail transit according to claim 2 is characterized in that: The connection assembly (5) comprises a plurality of angle steels (51), the prefabricated structural column (3) is provided with a plurality of first embedded plates (52) along its height direction, the plurality of angle steels (51) are arranged along the height direction of the prefabricated structural column (3), each angle steel (51) is connected to a plurality of the first embedded plates (52), at least two hook bolts (53) are passed through the end of the sound-absorbing partition (42), the hook bolt (53) is L-shaped, one end of the hook bolt (53) is threadedly connected with a fastening nut (54), the fastening nut (54) is tightly pressed against the sound-absorbing partition (42), and the other end of the hook bolt (53) is tightly pressed against the angle steel (51), so that the sound-absorbing partition (42) and the angle steel (51) are tightly pressed.

4. The assembled sound barrier for rail transit according to claim 1, characterized in that: A first temporary support assembly (8) is provided between adjacent prefabricated structural columns (3), and the first temporary support assembly (8) is used to laterally support the prefabricated structural columns (3) along the track direction before installing the prefabricated side sound baffle (4); Each of the prefabricated structural columns (3) and the corresponding bearing foundation (22) are jointly provided with a second temporary support assembly (9), and the second temporary support assembly (9) is used to provide longitudinal support to the prefabricated structural column (3) in the vertical direction before installing the prefabricated side sound baffle (4).

5. The assembled sound barrier for rail transit according to claim 4 is characterized in that: The first temporary support assembly (8) comprises two first diagonal support screw rods (81), both ends of the first diagonal support screw rods (81) are threadedly connected to first telescopic sleeves (82), the first telescopic sleeves (82) are hingedly connected to first abutment pads (83), the first abutment pads (83) are abutted against the side of the prefabricated structural column (3), and the two first diagonal support screw rods (81) are connected by a cross buckle connection; The second temporary support assembly (9) comprises a support rod (91), wherein the support rod (91) is horizontally arranged on the top of the bearing foundation (22), the support rod (91) is vertically connected to an abutment rod (92), the abutment rod (92) abuts against the peripheral surface of the bearing foundation (22), the abutment rod (92) is hinged with a second telescopic sleeve (93), the second telescopic sleeve (93) is threadedly connected to a second diagonal support screw (94), the second diagonal support screw (94) is hinged with a second abutment pad (95), the second abutment pad (95) abuts against the prefabricated structural column (3), the abutment rod (92) is vertically connected to a third telescopic sleeve (96), the third telescopic sleeve (96) is threadedly connected to a transverse support screw (97), the transverse support screw (97) is connected to a third abutment pad (98), and the third abutment pad (98) abuts against the prefabricated structural column (3).

6. The assembled sound barrier for rail transit according to claim 1, characterized in that: The barrier top structure (6) comprises a prefabricated longitudinal beam (61), a prefabricated middle span beam (62), a prefabricated side span beam (63) and a double T-plate (64); the prefabricated structural column (3) is provided with a second support seat (32) for supporting the prefabricated middle span beam (62) / the prefabricated side span beam (63); the prefabricated structural column (3) is provided with a third support seat (33); the third support seat (33) and the prefabricated structural column (3) jointly support the prefabricated longitudinal beam (61); The number of the double T-plates (64) is several, and several double T-plates (64) are arranged between two adjacent prefabricated middle-span beams (62) and between the prefabricated side-span beams (63) and the prefabricated middle-span beams (62). The adjacent double T-plates (64) are spliced ​​with each other, and the adjacent double T-plates (64) are jointly provided with a first sealing member (65). The prefabricated longitudinal beam (61) and the adjacent double T-plates (64) are jointly provided with a second sealing member (66). The prefabricated side-span beams (63), the prefabricated longitudinal beams (61), the prefabricated middle-span beams (62) and the double T-plates (64) jointly enclose a casting space for a top plate (67).

7. The assembled sound barrier for rail transit according to claim 6, characterized in that: The first sealing member (65) comprises a sealing plate (651), a second embedded plate (652) is arranged on the top of the double T plate (64), the length of the sealing plate (651) is the same as the length of the double T plate (64), the sealing plate (651) covers the joint between two adjacent double T plates (64), and the sealing plate (651) is fixed to the second embedded plate (652); The second sealing member (66) comprises a Z-shaped connecting plate (661), which is installed on the prefabricated longitudinal beam (61) and abuts against the end of the prefabricated longitudinal beam (61). The top of the Z-shaped connecting plate (661) covers the top of the double T-plate (64) and the two are fixed to each other.

8. The assembled sound barrier for rail transit according to claim 6, characterized in that: Two adjacent prefabricated side span cross beams (63) are jointly covered with a C-shaped cover plate (68), wherein the top of one of the prefabricated side span cross beams (63) is fixedly connected to the C-shaped cover plate (68), and the C-shaped cover plate (68) is slidably arranged on the top of the other prefabricated side span cross beam (63).

9. The assembled sound barrier for rail transit according to claim 1, characterized in that: The prefabricated structural column (3) is provided with a fourth support seat (34), and the fourth support seats (34) of the prefabricated structural columns (3) in the same row are commonly installed with a slide rail (71), and the two slide rails (71) commonly slide and support a protective shed (72), and rolling shafts (73) are provided at both ends of the protective shed (72), and the rolling shafts (73) are slidably set on the slide rails (71), and the protective shed (72) is located below the barrier top structure (6), and the slide rail (71) is provided with a plurality of sections, and a plurality of protective sheds (72) are provided, and each protective shed (72) corresponds to each section of the slide rail (71) one by one, and adjacent protective sheds (72) are connected by a protective cover plate (74).

10. The assembled sound barrier for rail transit according to claim 1, characterized in that: The prefabricated structural column (3) comprises a plurality of prefabricated column sections (35), and adjacent prefabricated column sections (35) are connected by grouting through grouting sleeves.

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