Sound barrier overall installation method

Abstract

The invention relates to the technical field of urban rail engineering construction, and discloses a sound barrier overall installation method which comprises the steps that stand columns are installed; side screen body modules are assembled, and a special hoisting frame is used for executing overall hoisting and installation; after the side face screen body modules are installed and fixed, the special hoisting frame is separated from the screen body modules, and the special hoisting frame is automatically unfolded after the mechanical locking structures are opened, so that rapid hoisting away from the upper portion is achieved. And the top integral unit is assembled, integrally hoisted and fixedly connected with the installed stand column. According to the invention, the top and the side screen bodies are pre-assembled into an integral module on the ground for hoisting, so that the original scattered and repeated single-piece hoisting operation is integrated into a few times of efficient integral hoisting operation. And the hoisting frequency and the adjusting time required by each operation unit are reduced, so that the effective workload in a single skylight point is greatly increased.

Description

Technical Field

[0001] This invention belongs to the field of urban rail engineering construction technology, specifically relating to a method for the overall installation of a sound barrier, and more particularly to a method for the efficient construction of an integrated sound barrier for subway operating lines. Background Technology

[0002] Currently, in the installation of sound barrier panels for elevated sections of subway projects during their operational phase in my country, single-piece hoisting is the most common method. However, single-piece hoisting presents the following problems: Construction schedules on operational lines cannot be guaranteed, with an average of 8-12 maintenance windows per month. Construction time is unpredictable, and factors such as nighttime maintenance, extended operating hours during holidays, and unforeseen events (like lightning warnings) can lead to no construction periods or cancellations, reducing the number of maintenance windows and slowing overall progress. Maintenance windows on operational lines have short working hours, with actual effective construction time of approximately 2 hours per day, resulting in low efficiency and high costs. The total investment in machinery is also significant and costly. Protecting existing equipment within the track area is challenging, especially the overhead contact line; the close proximity of the contact line to sound barriers increases the number of lifting operations per piece, thus increasing the probability of collisions with existing equipment. Summary of the Invention

[0003] The purpose of this invention is to provide a method for the overall installation of sound barriers to solve the problems of limited time during skylight periods and low hoisting efficiency, thereby achieving a significant improvement in construction efficiency, a substantial reduction in the input of workers and machinery, and effective savings in temporary engineering and machinery costs.

[0004] Based on the above concept, the technical solution adopted by this invention is as follows: According to a first aspect of the present invention, a method for overall installation of a sound barrier is provided, comprising the following steps: S1: Install the uprights; S2: Assemble the side panel modules and use a dedicated hoisting frame to perform overall hoisting and installation; S3: After the side screen module is installed and fixed, the special hoisting frame is detached from the screen module, and automatically unfolds after the mechanical locking structure is opened, so as to quickly lift it away from above; S4: Assemble the top unit and hoist it as a whole, then connect and fix it to the installed columns.

[0005] In some embodiments, the specific method for installing the columns in step S1 is to calculate the distance between any two adjacent columns based on the width of the side panel and fix the columns on the foundation.

[0006] In some embodiments, the assembly of the side panel modules in step S2, and the overall hoisting and installation using a dedicated hoisting frame, further includes: S21: Place the special hoisting frame on the ground; S22: Insert the sound barrier panels into the special hoisting frame in sequence; S23: After being lifted, the mechanical locking is achieved by the downward pressure exerted on the supporting structure by the weight of the sound barrier panels. S24: Insert the suspended side panel module into the slot between the installed columns.

[0007] In some embodiments, the automatic unfolding of the mechanical locking structure after opening in step S3 to achieve rapid lifting from above includes: S31: Raise the support rod; S32: The special lifting frame unfolds under the action of springs, forming an inverted V-shaped structure; S33: Dedicated lifting frame for quick lifting.

[0008] In some embodiments, the top integral unit in step S4 is pre-assembled from crossbeams, purlins and a top screen.

[0009] In some embodiments, the pre-assembly includes constructing a frame structure using beams and purlins, and then placing the screen on the constructed frame structure for fixation.

[0010] In some embodiments, the connection and fixing with the installed column in step S4 includes inserting the top integral unit into the slot of the column and fixing it with bolts.

[0011] The beneficial effects of this invention are as follows: 1. This invention integrates the previously scattered and repetitive individual hoisting operations into a few efficient overall hoisting operations by pre-assembling the top and side panels into a single module on the ground for hoisting. This reduces the number of hoisting operations and adjustment time required for each work unit, significantly increasing the effective workload within a single skylight window.

[0012] 2. This method arranges for the assembly, integration, and hoisting frame preparation of the screen modules to be completed on the ground or indoors, making it independent of the high-altitude operation environment in the track area. This process design allows the critical prefabrication and assembly procedures to proceed as usual even when severe weather (such as lightning or strong winds) prevents track area operations, effectively avoiding a complete interruption of the construction process. This reduces the absolute dependence on unstable track maintenance windows, enhances the flexibility of the overall construction organization and the controllability of the schedule, and is especially suitable for operational line renovation projects where the number and duration of track maintenance windows are not guaranteed. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall construction method of the rail transit sound barrier of the present invention; Figure 2This is a schematic diagram illustrating the process of the special lifting frame of the present invention performing overall lifting and installation; Figure 3 This is a schematic diagram illustrating the process of quickly detaching the special hoisting frame from the screen module according to the present invention; Figure 4 This is a schematic diagram of the column installation of the present invention; Figure 5 This is a structural schematic diagram of the special lifting frame of the present invention; Figure 6 This is a schematic diagram of the rotating device of the present invention; Figure 7 This is a schematic diagram of the support device of the present invention; Figure 8 This is a schematic diagram of the support rod of the present invention; Figure 9 This is a schematic diagram of the side panel module installed using the special hoisting frame of the present invention; Figure 10 This is a schematic diagram of the overall top unit structure of the present invention.

[0014] Figure label: Column 100, column base 110, bolt 120, bolt hole 130, foundation 140, side screen module 200, sound barrier panel 210, special hoisting frame 300, frame body 310, spring 320, support device 330, support rod 331, limit ball 332, through hole 333, rotating device 340, connecting rod 341, rotating shaft 342, assembly hole 350, round hole 351, square hole 352, top integral unit 400, crossbeam 410, purlin 420, top screen 430, connecting part 440. Detailed Implementation

[0015] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.

[0016] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this invention pertains. The words “a” or “one” and similar terms used in this application specification and claims do not indicate a limitation of quantity, but rather indicate the presence of at least one. “A plurality” means two or more. The words “comprising” or “including” and similar terms mean that the element or object preceding “comprising” or “including” covers the element or object listed following “comprising” or “including” and its equivalents, and does not exclude other elements or objects. The words “connected” or “linked” and similar terms are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The words “above” and / or “below” and similar terms are for ease of description only and are not limited to a location or spatial orientation. The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0017] The technical concept of this invention includes: First, in response to the prominent problems in the renovation project of sound barriers on subway operating lines, such as the strict limitation of construction time during the track opening period, the lack of fixed working windows, and the high risk of the environment, including the cancellation of track opening periods due to operational adjustments and sudden weather changes, the safety risks brought about by the dense existing equipment such as the catenary in the track area, and the defects of the traditional single-piece hoisting method such as cumbersome procedures, low efficiency, and large human and machine input, an installation method that is more adapted to the construction characteristics of operating lines is proposed.

[0018] Secondly, this solution breaks down the sound barrier into side panel modules and a top structural module, pre-assembling them on the ground. Combined with a dedicated hoisting frame that allows for automatic demolding, modular overall hoisting is achieved. This method significantly reduces high-altitude work time and the number of hoisting operations, substantially improving construction efficiency at individual skylight points. Simultaneously, the hoisting frame features gravity self-locking and automatic deployment, enabling the hoisting equipment to detach vertically after installation, completely avoiding the risks of collisions with overhead contact lines and other equipment associated with traditional lateral removal methods. Furthermore, transferring assembly work to the ground or indoors enhances the construction process's adaptability to external interference factors such as weather.

[0019] Therefore, in order to achieve a comprehensive improvement in construction efficiency, safety and economy while ensuring operational safety, this invention adopts a technical approach that combines modular overall hoisting with a special rapid demolding process, forming a set of efficient sound barrier installation methods suitable for narrow and high-risk environments such as subway lines.

[0020] This application provides a method for the overall installation of a sound barrier, including the following steps: S1: Install the uprights; S2: Assemble the side panel modules and use a dedicated hoisting frame to perform overall hoisting and installation; S3: After the side screen module is installed and fixed, the special hoisting frame is detached from the screen module, and automatically unfolds after the mechanical locking structure is opened, so as to quickly lift it away from above; S4: Assemble the top unit and hoist it as a whole, then connect and fix it to the installed columns.

[0021] This invention integrates the previously scattered and repetitive individual hoisting operations into a few efficient overall hoisting operations by pre-assembling the top and side panels into a single module on the ground for hoisting. This reduces the number of hoisting operations and adjustment time required for each work unit, significantly increasing the effective workload within a single skylight window. The assembly, integration, and hoisting frame preparation of the panel modules are completed on the ground or indoors, making them independent of the high-altitude working environment in the track area. This process design allows the critical prefabrication and assembly process to continue even when severe weather (such as lightning or strong winds) prevents track area operations, effectively avoiding a complete interruption of the construction process.

[0022] The following is in conjunction with the appendix Figures 1 to 10 This application provides a detailed description of a method for the overall installation of a sound barrier.

[0023] Figure 1 This is a schematic diagram of the overall construction method for a rail transit sound barrier according to an embodiment of the present invention. The overall construction method for a rail transit sound barrier according to an embodiment of the present invention includes the following steps: S1: Install column 100; S2: Assemble the side panel module 200 and use the special hoisting frame 300 to perform overall hoisting and installation; S3: After the side screen module 200 is installed and fixed, the special hoisting frame 300 is disengaged from the side screen module 200, and automatically unfolds after the mechanical locking structure is opened, so as to achieve rapid hoisting from above; S4: Assemble the top unit 400 and hoist it as a whole, connecting and fixing it to the installed column 100.

[0024] In this embodiment, the installation diagram of the column 100 in step S1 is shown below. Figure 4The column 100 has an I-shaped cross-section. A column base 110 is located at the bottom of the column 100, and the column base 110 is mounted on the foundation 140 by bolts 120. The top and bottom of the column 100 also have several bolt holes 130 for fixing the top integral unit 400 and the side screen module 200. The columns 100 are installed on the foundation 140 in an array arrangement, and the spacing between the columns 100 is set according to the size requirements of the sound barrier. The technical method of the column 100 in this embodiment of the invention is to reserve foundation spacing for the sound barrier, and the I-shaped cross-section provides a convenient foundation for the installation of the sound barrier.

[0025] In this embodiment, the installation of the column 100 and the side panel module 200 can be carried out simultaneously. The combined installation of the side panel module 200 can also be performed indoors or under a building with a shielding function. After the side panel module 200 is fully assembled, it is then hoisted as a whole into the I-shaped slot of the column 100 for rapid insertion and installation. Therefore, this invention has the advantages of engineering flexibility and high construction efficiency. The installation of the column 100 and the module assembly can be carried out in parallel, achieving close connection of processes and effectively shortening the overall construction period. At the same time, the indoor assembly of the panel module is completely unaffected by the track maintenance window time and external weather conditions, ensuring the continuity and quality control of key prefabrication work.

[0026] Furthermore, Figure 2 This is a schematic diagram illustrating the process of overall hoisting and installation using the dedicated hoisting frame in an embodiment of the present invention. Step S2 further includes the following steps: S21: Place the special hoisting frame 300 on the ground; S22: Insert the sound barrier panels 210 into the special lifting frame 300 in sequence; S23: After being lifted, the weight of the sound barrier panel 210 applies downward pressure to the support device 330 to form a mechanical lock; S24: Insert the suspended side panel module 200 into the slots of the installed column 100.

[0027] like Figures 5 to 8As shown, in this embodiment, the dedicated hoisting frame 300 includes two parallel frame bodies 310, a spring 320, a rotating device 340, and a support device 330. The frame body 310 is preferably a hollow frame structure welded from rectangular steel tubes. The rotating device 340 connects the two frame bodies 310 and includes two connecting rods 341 and a rotating shaft 342. One end of each connecting rod 341 forms a rotating structure via the rotating shaft 342, and the other end is hinged to each of the two frame bodies 310. A spring 320 is also provided between the two connecting rods 341. When the two frame bodies 310 are closed, the spring 320 is compressed; when the frame bodies 310 need to open, the spring 320 automatically opens the two frame bodies 310.

[0028] In this embodiment, the bottom of the frame body 310 is further provided with a support device 330, which consists of a support rod 331 and limiting balls 332 at both ends. One end of the support rod 331 is connected to the bottom of one frame body 310 through a through hole 333, and the diameter of the through hole 333 is smaller than the diameter of the limiting ball 332, so that the support device 330 can rotate with that end as the center. The limiting ball 332 at the other end of the support rod 331 cooperates with the mounting hole 350 provided at the bottom of another frame body 310. The assembly hole 350 is composed of a connected circular hole 351 and a square hole 352. The diameter of the circular hole 351 is larger than the diameter of the limiting ball 332, while the width of the square hole 352 is smaller than the diameter of the limiting ball 332. The square hole 352 is located below the circular hole 351, which ensures that the limiting ball 332 can be inserted into the circular hole 351. After the sound barrier panel 210 is clamped, during hoisting, the sound barrier panel 210 will be supported by two support devices 330. At the same time, the support rod 331 moves downward under the action of the weight of the sound barrier, so that the limiting ball 332 enters the square hole 352, forming a self-locking mechanism to prevent the support rod 331 from slipping out and causing the frame body 310 to automatically spring open.

[0029] In this embodiment, the side panel module 200 includes several independent sound barrier panels 210. The sound barrier panels 210 are assembled and installed in the dedicated hoisting frame 300. The sound barrier panels 210 are placed into or inserted into the dedicated hoisting frame 300 from the side, and then assembled into an integral side panel module 200 by bolts or glue.

[0030] Furthermore, Figure 3 This is a schematic diagram illustrating the process of quickly detaching the dedicated lifting frame from the screen module according to an embodiment of the present invention. Step S3 specifically includes the following steps: S31: Lift the support rod 331; S32: The special lifting frame unfolds under the action of spring 320, forming an inverted V-shaped structure; S33: Dedicated lifting frame for quick lifting and removal.

[0031] In this embodiment, when the sound barrier panel 210 is hoisted into the I-shaped slot of the column 100 and installed in the corresponding position of the bolt hole 130 on the column 100 by bolts, the sound barrier panel 210 is fixed by external force. At this time, the frame body 310 is no longer under force. Just lift the support rod 331 upwards, and the frame body 310 will automatically separate at a certain angle under the action of the rotating device 340, forming an inverted V shape, which makes it easy to lift the frame body 310 upwards and enter the next cycle process.

[0032] In this embodiment, step S4 involves assembling the top integral unit 400 and hoisting it as a whole, then connecting and fixing it to the already installed column 100. The specific implementation is as follows: First, the top unit 400 is assembled on the ground or at a designated assembly site. This unit mainly consists of crossbeams 410, purlins 420, and a top panel 430 (such as an acrylic sheet). During assembly, the crossbeams 410 and purlins 420 are connected according to the design dimensions to form a stable top frame. Then, the top panel 430 is fixed to this frame by bolts or adhesive, forming a complete top unit 400 that can be hoisted as a whole.

[0033] Next, use lifting equipment (such as a truck crane) to lift it as a whole and transport it smoothly to the predetermined position above the installed column 100.

[0034] Finally, by adjusting the connection parts 440 at both ends of the top module and aligning them with the bolt holes 130 on the top of the lower column 100, and using methods such as insertion or bolt connection to achieve firm fixation, the installation of a complete sound barrier structure unit is completed.

[0035] Based on the core concept proposed in this invention, those skilled in the art will understand that the scope of protection of the overall sound barrier installation method is not limited to the specific embodiments described above in conjunction with the accompanying drawings. As long as the core steps of pre-assembling the side panels into an integral module and installing it using a dedicated hoisting frame with automatic demolding are adopted, and pre-assembling the top structure into an integral unit for hoisting are employed, the technical solution falls within the scope of protection of this invention. Regardless of how the specific mechanical structure of the dedicated hoisting frame changes, or how the number, specific material, or connection method of the plates contained in the side panel module or the top integral unit is adjusted—for example, changing the arrangement order of the sound-absorbing panels and light-transmitting panels in the side panel module, or replacing bolt connections with welding for the connection method of the crossbeams and purlins in the top unit—all these are equivalent transformations or simple extensions of the installation method described in this invention. This design, by completing the main assembly work outside the track area and achieving rapid vertical removal of hoisting tools, fundamentally improves the efficiency and safety of operations in high-risk, narrow spaces. Any adjustments to the construction process based on this core principle should be covered by the patent scope of this invention.

[0036] Detailed implementation methods and principles: The specific implementation method of the sound barrier installation method of the present invention includes, in sequence, the following stages according to the construction process: construction preparation, column installation, side screen module hoisting, top structure module hoisting, and cyclic operation.

[0037] The construction preparation phase is completed on the ground or indoors before the start of the skylight period. Measurements are taken and laid out according to the design drawings to determine the installation positions of each column 100, and the spacing between adjacent columns 100 is calculated to ensure that it matches the dimensions of the side panel modules 200 to be installed.

[0038] The installation of column 100 is carried out during the designated skylight period. Using lifting equipment, the I-beam cross-section column 100 is hoisted to the pre-set foundation location, and a permanent connection to the foundation is achieved through pre-embedded bolts or welding. During installation, measuring instruments are used to correct the verticality and flatness of the columns, ensuring that the slot width of all columns 100 is consistent and compatible with the thickness of the side panel modules.

[0039] The overall hoisting and installation of the side screen module 200 is carried out according to the following steps: First, the special hoisting frame 300 is placed horizontally on the ground. The sound barrier panels 210 (acrylic light-transmitting panels, metal sound-absorbing panels, etc.) are arranged and installed into the hoisting frame in sequence to form the side screen module 200. The bottom of the module is supported by the support rod 331 of the hoisting frame. The gravity of the side screen module 200 drives the limiting mechanism at the end of the support rod 331 to complete gravity self-locking. The side screen module 200 is hoisted between the two columns 100. After fine-tuning and alignment, the module is lowered and inserted into the I-shaped slot of the column 100. After the module is installed and fixed, the mechanical lock of the support rod 331 is released. The rotating device 340 at the top of the hoisting frame drives the frame body 310 to automatically spring outward under the action of the spring 320, so that the hoisting frame separates from the screen module in an inverted V shape. Then, it is lifted vertically upward from the hoisting frame.

[0040] The top unit 400 is also installed as a whole. The crossbeam 410, purlin 420 and top screen 430 are pre-assembled into a rigid unit on the ground and then hoisted to the top of the column 100 by a crane. The connection part 440 is fixed to the column 100 by bolt or plug connection.

[0041] The implementation principle of this method is based on workflow optimization and risk control. By moving the assembly process to the ground, the time spent working at heights and the frequency of hoisting within the track area are reduced, thereby improving the effective utilization rate of track maintenance windows. The gravity self-locking and automatic spring-loaded release design of the dedicated hoisting frame transforms the lateral movement required by traditional hoisting tools into vertical lifting, eliminating the risk of collisions between the hoisting tools and existing equipment such as the overhead contact line. This construction method is suitable for sound barrier renovation projects in narrow spaces beside operating lines, achieving a balance of construction safety, efficiency, and quality within limited working windows.

[0042] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. The invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0043] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A method for integral installation of a sound barrier, characterized in that, Includes the following steps: S1: Install the uprights; S2: Assemble the side panel modules and use a dedicated hoisting frame to perform overall hoisting and installation; S3: After the side screen module is installed and fixed, the special hoisting frame is detached from the screen module, and automatically unfolds after the mechanical locking structure is opened, so as to quickly lift it away from above; S4: Assemble the top unit and hoist it as a whole, then connect and fix it to the installed columns.

2. The method for overall installation of a sound barrier according to claim 1, characterized in that, The cross-section of the column mentioned in step S1 is I-shaped, and the width of the slot of the I-shaped column is consistent with the thickness of the side screen module.

3. The method for overall installation of a sound barrier according to claim 1, characterized in that, The specific method for installing the columns in step S1 is to calculate the distance between any two adjacent columns based on the width of the side panel, and then fix the columns on the foundation.

4. The method for overall installation of a sound barrier according to claim 1, characterized in that, Step S2, which involves assembling the side panel modules and using a dedicated hoisting frame for overall hoisting and installation, also includes: S21: Place the special hoisting frame on the ground; S22: Insert the sound barrier panels into the special hoisting frame in sequence; S23: After being lifted, the mechanical locking is achieved by the downward pressure exerted on the supporting structure by the weight of the sound barrier panels. S24: Insert the suspended side panel module into the slot between the installed columns.

5. A method for integral installation of a sound barrier according to claim 1 or 4, characterized in that, Step S3, which involves automatically unfolding after opening the mechanical locking structure to achieve rapid lifting from above, includes: S31: Lift the supporting structure; S32: The special lifting frame unfolds under the action of springs, forming an inverted V-shaped structure; S33: Dedicated lifting frame for quick lifting.

6. The method for integral installation of a sound barrier according to claim 1, characterized in that, The top integral unit mentioned in step S4 is pre-assembled from crossbeams, purlins and top screen.

7. A method for integral installation of a sound barrier according to claim 6, characterized in that, The pre-assembly includes building a frame structure using beams and purlins, and then placing the screen on the built frame structure for fixation.

8. The method for integral installation of a sound barrier according to claim 1, characterized in that, The connection and fixing with the installed column in step S4 includes inserting the top integral unit into the slot of the column and fixing it with bolts.

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