Subway damping pad track bed limiting groove shaping device and construction method

Abstract

The application discloses a subway damping pad track bed limiting groove shaping device and a construction method, which comprises a control limiting component for controlling the size of the groove, and a support component detachably arranged on the control limiting component and used for fixing a template, the control limiting component comprises two steel plate boxes, and the two steel plate boxes are located on the same horizontal plane and are parallel to each other; the subway damping pad track bed limiting groove shaping device and the construction method make the device more convenient to disassemble and assemble and can be circulated and used, reduce the engineering cost, accurately control the limiting groove, solve the problems that the wood template is often used in the existing limiting construction process, the disassembly and assembly are inconvenient, the device cannot be circulated and used, the planar position of the groove is difficult to control in the construction, the size of the groove is not accurately controlled, the groove template cannot prevent floating in the concrete pouring process, the problems of cracking and block falling in the later operation process are increased, the construction efficiency and yield are low, manual labor is consumed, and the engineering cost is increased.

Description

Technical Field

[0001] This invention relates to the field of subway vibration damping pad track bed technology, specifically to a subway vibration damping pad track bed limiting groove shaping device and construction method. Background Technology

[0002] Urban rail transit systems typically run through bustling urban areas, often adjacent to important urban areas such as residential, industrial, commercial, administrative, and cultural districts. Therefore, the requirements for vibration and noise control are more stringent. In subway construction, the track bed that passes through these special sections generally adopts a type of track bed with vibration damping pads laid under the track bed slab to reduce track vibration. By using limiting grooves on the foundation pad layer of the vibration damping pad track bed, the effect of vibration reduction and noise reduction is achieved.

[0003] Existing track slab construction processes often employ wooden formwork. This requires first on-site measurement and layout, then binding of the foundation reinforcement, followed by the fabrication of the wooden formwork using a woodworking saw and hammer, and finally installation of the formwork for foundation pouring. The wooden formwork cannot be reused, is inconvenient to assemble and disassemble, and cannot be transferred for reuse. During construction, it is difficult to control the planar position of the grooves, the dimensions of the grooves are inaccurate, and the groove formwork cannot prevent floating during concrete pouring. This increases the risk of cracking and spalling due to longitudinal and lateral displacement of the track slab during later operation, increasing maintenance workload. This not only results in low construction efficiency and output but also consumes excessive labor, increasing project costs. Summary of the Invention

[0004] The purpose of this invention is to provide a shaping device and construction method for limiting grooves in subway vibration damping pad track beds, which solves the problems of increased maintenance workload, low construction efficiency and output, high labor consumption and increased project costs in the existing limiting construction process.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a shaping device for limiting grooves in subway vibration damping pad track bed, comprising:

[0006] Control limit components for controlling the groove size, and

[0007] A detachable bracket assembly for fixing the template, mounted on the control limit assembly.

[0008] Preferably, the control limiting component includes two steel plate boxes, which are on the same horizontal plane and parallel to each other.

[0009] Preferably, the support assembly includes two flat steel supports, which are disposed on the top of the steel plate box.

[0010] Preferably, it also includes a fastening assembly, which includes multiple M12 threaded rods, multiple nuts, and multiple washers, wherein the nuts are threadedly connected to both sides of the M12 threaded rods.

[0011] Preferably, an M12 threaded rod is vertically arranged on both sides of the flat steel bracket, and the M12 threaded rods on both sides of the flat steel bracket are connected to the flat steel bracket and the steel plate box.

[0012] Preferably, an M12 threaded rod is horizontally connected in the middle of the flat steel bracket.

[0013] A construction method for a subway vibration damping pad track bed limiting groove shaping device, using the aforementioned subway vibration damping pad track bed limiting groove shaping template, the method includes the following steps:

[0014] S1: Assemble the flat steel bracket with the steel plate box as a whole using threaded rods;

[0015] S2: Insert the shaped template into the central drainage ditch template;

[0016] S3: Adjust and fix the template according to the center line of the limiting groove.

[0017] Preferably, the specific steps of S1 include first connecting the M12 threaded rod to the flat steel bracket, and then connecting the steel plate box to the flat steel bracket through the M12 threaded rod.

[0018] Preferably, step S3 specifically includes adjusting the template according to the center line of the measured and released limiting groove, and finally tightening and fixing the flat steel bracket by M12 threaded rod.

[0019] As can be seen from the above technical solution, the present invention has the following beneficial effects:

[0020] This invention relates to a template and construction method for limiting grooves in subway vibration damping pad track beds. By incorporating a control limiting component to control the groove dimensions, and a detachable support component for fixing the template, the method facilitates easier assembly and disassembly, allowing for reuse and reducing project costs. It precisely controls the limiting grooves, addressing the problems of traditional methods that often rely on wooden templates. These methods require on-site measurement and layout, binding of base reinforcement, fabrication of wooden templates using woodworking saws and hammers, installation of the templates, and pouring of the base. The wooden templates cannot be reused, are inconvenient to assemble and disassemble, and cannot be reused. Furthermore, the method suffers from difficulties in controlling the planar position and dimensions of the grooves during construction, and the inability to prevent the templates from floating during concrete pouring. This increases the risk of cracking and spalling due to longitudinal and lateral displacement of the track bed slab during later operation, and also increases maintenance workload. The method is characterized by low construction efficiency and output, high labor costs, and increased project costs. Attached Figure Description

[0021] Figure 1 This is an isometric view of the overall structure of the subway vibration damping pad track bed limiting groove shaping template of the present invention;

[0022] Figure 2 This is a front view of the overall structure of the subway vibration damping pad track bed limiting groove shaping template of the present invention;

[0023] Figure 3 This is a side view of the overall structure of the subway vibration damping pad track bed limiting groove shaping template of the present invention;

[0024] Figure 4 This is a top view of the overall structure of the subway vibration damping pad track bed limiting groove shaping template of the present invention;

[0025] Figure 5 This is a flowchart illustrating the construction method of the subway vibration damping pad track bed limiting groove shaping template of the present invention.

[0026] In the diagram: 1. Control limit assembly; 11. Steel plate box; 2. Bracket assembly; 21. Flat steel bracket; 3. Fastening assembly; 31. M12 threaded rod. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figures 1-4 As shown, a subway vibration damping pad track bed limiting groove shaping device includes a control limiting component 1 and a support component 2. The control limiting component 1 is used to control the groove size, and the support component 2 is detachably mounted on the control limiting component 1. The support component 2 is used to fix the template.

[0029] like Figures 1-4As shown, the control and limiting assembly 1 includes two parallel steel plate boxes 11 on the same horizontal plane. The support assembly 2 includes two flat steel supports 21, which are also arranged parallel to each other, with both sides of the flat steel supports 2 positioned on the top of the steel plate boxes 1. The device also includes a fastening assembly 3, which includes multiple M12 threaded rods 31, multiple nuts, and multiple washers. The nuts are threaded onto both sides of the M12 threaded rods 31. The steel plate boxes 1 control the size of the limiting grooves, and the flat steel supports 2 fix the template, ensuring its planar position and preventing it from floating. The fastening assembly 3 is connected to both steel plate boxes 1 and both flat steel supports 2. The flat steel supports 2 are made of galvanized material and can be detachably mounted on the steel plate boxes 1 via the fastening assembly 3, making the shaping template efficient, fast, and economical. It also has a certain turnover rate, ensuring accurate control of the plane position and groove size during the construction of the limiting groove, and effectively preventing the formwork from floating during concrete pouring. The two flat steel supports 2 are also arranged in parallel, and both sides of the flat steel supports 2 are set on the top of the steel plate box 1. The fastening component 3 includes multiple M12 threaded rods 31, matching nuts and washers. The nuts are threaded to both sides of the M12 threaded rods 31. An M12 threaded rod 31 is vertically set on both sides of the flat steel support 2 to connect the flat steel support 2 to the steel plate box 1. The M12 threaded rod 31 is locked on both sides with nuts and washers to achieve fixation. The M12 threaded rods 31 on both sides of the flat steel support 31 are connected to the flat steel support 2 and the steel plate box 1. An M12 threaded rod 31 is horizontally connected in the middle of the flat steel support 2.

[0030] like Figure 5 As shown, a construction method for a metro vibration damping pad track bed limiting groove shaping template is used. The method includes the following steps:

[0031] Step S1: Assemble the flat steel bracket with the steel plate box as a whole using threaded rods;

[0032] Step S2: Insert the shaping template into the central drainage ditch template;

[0033] Step S3: Adjust the template according to the center line of the limiting groove and fix the template.

[0034] Specifically, the limiting groove shaped template is used in the construction section of the limiting groove of the subway vibration damping pad track bed. Before installation, the flat steel bracket is assembled with the steel plate box through the threaded rod. The specific operation is as follows: first, connect the M12 threaded rod to the flat steel bracket, then connect the steel plate box to the flat steel bracket through the M12 threaded rod, then insert the assembled shaped template into the central water ditch template, adjust the template according to the center line of the limiting groove as measured and released, and finally tighten the flat steel bracket through the horizontally arranged M12 threaded rod to fix the template. Adjust the template to the design plane position and height according to the positioning pile of the limiting groove, and tighten the fixing device bolts to fix the template.

[0035] In the implementation process, one embodiment is provided. The standardized template mainly uses 50*8mm galvanized flat steel supports, which are processed, cut, and drilled to form the template support. Then, it is connected to the template box made of 5mm steel plate box 1 through nuts, washers, and M12 threaded rods 31 to complete the assembly. During construction, the standardized template is clamped onto the central drainage ditch template to solve the problems of limiting the plane position of the groove, controlling the groove size, and preventing the groove template from floating. It is applied to the construction section of the limiting groove of the subway vibration damping pad track bed. The flat steel support 2 is assembled with the steel plate box 1 as a whole through the M12 threaded rods 31. Before installation, the M12 threaded rods 31 are first threadedly connected to the flat steel support 2, and then the template box made of steel plate box 1 is connected. Then, the pre-assembled standardized template is inserted into the central drainage ditch template. The template is adjusted according to the center line of the limiting groove as measured and marked. Finally, the flat steel support 2 is tightened by the M12 threaded rods 31 arranged horizontally on the flat steel support 2. The template can be fixed and removed after construction by loosening the bolts on the M12 threaded rod 31. A pair of limiting grooves are set every 24 meters on the foundation pad and reserved during the foundation pad pouring. The upper part of the groove is a 380mm*472mm rectangle and the bottom part is a 350*450mm rectangle. The whole is an inverted trapezoid with a spacing of 1100mm perpendicular to the track direction. Before pouring the track bed, three types of elastic buffer pads (A, B, and C) need to be installed around the groove. The entire installation process can be completed by one person. Compared with the existing construction process, it not only saves time and labor but also greatly improves production efficiency, truly creating value.

[0036] Working process: First, connect the M12 threaded rod 31 to the flat steel bracket 2 by thread. Then, connect the template box made of steel plate box 1. Next, insert the pre-assembled template into the central water ditch template. Adjust the template according to the center line of the limit groove marked by measurement. Finally, tighten the flat steel bracket 2 by using the M12 threaded rod 31 arranged horizontally on the flat steel bracket 2 to fix the template. After construction is completed, loosen the bolts on the M12 threaded rod 31 to disassemble it.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A template for defining the limiting groove of a subway vibration damping pad track bed, characterized in that, include: Control limit assembly (1) for controlling the groove size, and A bracket assembly (2) that can be detachably mounted on the control limit assembly (1) for fixing the template; The control limit assembly (1) includes two steel plate boxes (11), which are located on the same horizontal plane and are parallel to each other; The support assembly (2) includes two flat steel supports (21), which are disposed on the top of the steel plate box (11); It also includes a fastening assembly (3), which includes multiple M12 threaded rods (31), multiple nuts and multiple washers, wherein the nuts are threadedly connected to both sides of the M12 threaded rods (31); An M12 threaded rod (31) is vertically arranged on both sides of the flat steel bracket (21), and the M12 threaded rod (31) on both sides of the flat steel bracket (21) is connected to the flat steel bracket (21) and the steel plate box (11); The flat steel bracket (21) is horizontally connected to an M12 threaded rod (31) in the middle. The flat steel bracket can be tightened by the horizontally arranged M12 threaded rod and then fixed to the central water ditch template.

2. A construction method for a template for a limiting groove in a subway vibration damping pad track bed, characterized in that, The method using the subway vibration damping pad track bed limiting groove shaping template as described in claim 1 includes the following steps: S1: Assemble the flat steel bracket with the steel plate box as a whole using threaded rods; S2: Insert the shaped template into the central drainage ditch template; S3: Adjust and fix the template according to the center line of the limiting groove.

3. The construction method of the limiting groove shaping template for subway vibration damping pad track bed according to claim 2, characterized in that: The specific steps of S1 include first connecting the M12 threaded rod to the flat steel bracket, and then connecting the steel plate box to the flat steel bracket through the M12 threaded rod.

4. The construction method of the limiting groove shaping template for subway vibration damping pad track bed according to claim 2, characterized in that: The specific steps of S3 include adjusting the template according to the center line of the measured and released limiting groove, and finally tightening and fixing the flat steel bracket with an M12 threaded rod.

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