Existing railway assembly type environment-friendly reinforcing structure and construction method

Abstract

The invention discloses an existing railway assembly type environment-friendly reinforcing structure and a construction method, an existing railway comprises a continuous bridge deck and a plurality of pier studs arranged at the bottom of the continuous bridge deck in a supported mode, and the existing railway assembly type environment-friendly reinforcing structure comprises a sound barrier assembly, a sound insulation assembly and a reinforcing assembly, comprising a sound barrier beam which is fixedly installed on the side edge of a continuous bridge floor and arranged in the extending direction of the continuous bridge floor, and a plurality of sound barrier units which are installed on the sound barrier beam in an end-to-end splicing mode. And the supporting system comprises a plurality of hoop assemblies fixedly installed on the peripheral sides of the pier columns correspondingly and a plurality of bracket assemblies fixedly connected between the sound barrier beam and the hoop assemblies correspondingly, the railway environment-friendly reinforcing requirement is met, meanwhile, the purpose of safe and convenient construction is achieved, and high popularization value is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to an assembled environmentally friendly reinforcement structure for an existing railway suitable for the construction of a sound barrier behind the existing railway and a construction method thereof. Background Art

[0002] With the rapid development of railway construction, the interconnection between cities has been greatly promoted. However, with its rapid development, the problem of noise pollution has gradually attracted people's attention, and sound barriers are usually regarded as one of the effective means to reduce noise.

[0003] For the construction of sound barriers on railway bridges, two methods are currently used: independent column support system sound barriers and post-corbel support system sound barriers. Through statistical analysis and theoretical research, the construction of independent column support system sound barriers is affected by the terrain along the line. In places where the height of railway bridges is too high, in order to meet the requirements of the height-to-thinness ratio of independent columns, the cross-section of independent columns is increased, resulting in great construction difficulty, long construction period, high cost, and serious impact on the safe operation of the railway. The post-corbel support system sound barrier is connected to the existing railway piers through embedded reinforcement, serving as the lower support structure of the later sound barrier. However, the post-corbel support system has a large amount of embedded reinforcement, and the construction is prone to pier reinforcement fracture. The longitudinal reinforcement fracture causes the pier force transmission path to be discontinuous, and the stirrup fracture affects the lateral constraint of the pier structure, affecting the safe use of the pier. Summary of the invention

[0004] In order to overcome the defects in the prior art, the present invention provides an existing railway assembled environmental protection reinforcement structure and a construction method, which can achieve the purpose of safe and convenient construction while meeting the requirements of railway environmental protection reinforcement.

[0005] In order to achieve the above-mentioned object, the present invention provides an existing railway assembled environmental protection reinforcement structure, the existing railway comprises a continuous bridge deck and a plurality of piers supported at the bottom of the continuous bridge deck, the existing railway assembled environmental protection reinforcement structure comprises:

[0006] A sound barrier assembly comprises a sound barrier beam fixedly mounted on the side of the continuous bridge deck and arranged along the extension direction of the continuous bridge deck, and a plurality of sound barrier units mounted on the sound barrier beam in a manner of being spliced ​​end to end;

[0007] The support system includes a plurality of clamp assemblies respectively fixedly installed on the outer peripheral sides of the plurality of piers and a plurality of bracket assemblies respectively fixedly connected between the sound barrier beam and the plurality of clamp assemblies.

[0008] Preferably, a limit baffle is fixedly installed on the sound barrier beam at a position corresponding to each of the piers, and the corbel assembly is fixedly connected between the corresponding limit baffle and the clamp assembly.

[0009] Preferably, the clamp assembly includes two clamp members arranged at intervals along the axial direction of the pier, the corbel assembly includes a cross bar fixedly connected to one of the clamp members and arranged in a direction perpendicular to the column body of the pier, and a diagonal support rod obliquely fixedly connected to the other of the clamp members and between the end of the cross bar on the side facing away from the pier, and a height adjustment bracket is fixedly connected between the cross bar and the sound barrier beam.

[0010] Preferably, a rubber pad is provided between each of the hoop members and the pier column.

[0011] Preferably, the height-adjusting bracket includes two vertical poles fixedly mounted on the cross bar and a plurality of support poles fixedly connected between the two vertical poles, a connecting rod is fixedly connected between the ends of the two vertical poles facing away from the cross bar, and the side of the connecting rod facing away from the two vertical poles is fixedly connected to the corresponding limit baffle.

[0012] Preferably, the ratio of the distance between the two clamping members to the length of the cross bar is greater than 1.

[0013] Preferably, the clamp member comprises two clamp plates spliced ​​to each other, and the two clamp plates are spliced ​​to each other and fixed by bolts after splicing.

[0014] Preferably, the width of the clamping plate is greater than or equal to √2 times the cross-sectional length of the diagonal brace.

[0015] A construction method for prefabricated environmental protection reinforcement of an existing railway, wherein the prefabricated environmental protection reinforcement structure of the existing railway is used to realize environmental protection reinforcement of the existing railway, and the construction method comprises the following steps:

[0016] A clamp assembly is fixedly installed on the outer peripheral side of each pier;

[0017] Install the bracket assembly and fix the bracket assembly to the hoop assembly;

[0018] Install a sound barrier beam on the side of the corbel assembly relatively far from the hoop assembly, and fix the sound barrier beam to the continuous bridge deck;

[0019] A plurality of sound barrier units are installed on the barrier beam, and the plurality of sound barrier units are spliced ​​end to end.

[0020] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0021] 1) It reduces the damage and disturbance to the piers, strengthens the lateral constraints of the piers, and improves the bearing capacity of the piers.

[0022] 2) The construction process is simple and convenient, reducing the investment in temporary land and related processing plant areas during the construction period.

[0023] 3) By adopting the hoop support system, the duration of high-altitude operations is reduced, and the safety impact of construction on railway construction is reduced BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of the existing railway assembled environmental protection reinforcement structure in an embodiment of the present invention.

[0026] Figure 2 Schematic diagram of the structure of the clamp member in the embodiment of the present invention.

[0027] Figure 3 Schematic diagram of the structure of the bracket assembly in the embodiment of the present invention.

[0028] Figure 4 It is a schematic diagram of a sound barrier beam of a structural form in an embodiment of the present invention.

[0029] Figure 5 It is a schematic diagram of another structural form of a sound barrier beam in an embodiment of the present invention.

[0030] The corresponding relationship of the numbers in the accompanying drawings is as follows:

[0031] 11-continuous bridge deck; 12-pier; 21-sound barrier beam; 211-precast concrete beam; 212-steel truss beam; 213-honeycomb aluminum plate; 22-sound barrier unit; 24-limit baffle; 3-hoop; 31-hoop plate; 32-rubber pad; 33-bolt; 4-corbel assembly; 41-cross bar; 42-diagonal brace; 43-height adjustment bracket; 431-vertical pole; 432-connecting rod; 433-support rod. DETAILED DESCRIPTION

[0032] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] See also Figures 1 to 5As shown, an embodiment of the present invention provides an existing railway prefabricated environmental protection reinforcement structure, wherein the existing railway includes a continuous bridge deck 11 and a plurality of piers 12 supported at the bottom of the continuous bridge deck 11, and the existing railway prefabricated environmental protection reinforcement structure includes a sound barrier assembly and a support system, wherein the sound barrier assembly includes a sound barrier beam 21 fixedly installed on the side of the continuous bridge deck 11 and arranged along the extension direction of the continuous bridge deck 11, and a plurality of sound barrier units 22 installed on the sound barrier beam 21 with the head and tail spliced ​​with each other; the support system includes a plurality of hoop assemblies respectively fixedly installed on the outer peripheral sides of the plurality of piers 12 and a plurality of corbel assemblies 4 respectively fixedly connected between the sound barrier beam 21 and the plurality of hoop assemblies.

[0034] Furthermore, in this embodiment, a limit baffle 24 is fixedly installed on the sound barrier beam 21 at a position corresponding to each pier 12, and the bracket assembly 4 is fixedly connected between the corresponding limit baffle 24 and the clamp assembly. Preferably, the clamp assembly has two clamp members 3 spaced apart along the axial direction of the pier 12, and a rubber pad 32 is provided between each clamp member 3 and the pier 12. It should be noted that, in the present embodiment, the sound barrier beam 21 can be any one of a precast concrete beam 211 or a steel truss beam (Bailey beam) 212. When a precast concrete beam 211 is used, transverse limit baffles 24 should be set on both sides of the top crossbeam of the portal steel frame according to the width of the concrete beam, and the crossbeam and the lower I-beam (i.e., the beam of the continuous bridge deck) are connected and fixed with pre-embedded bolts. When a steel truss beam 212 is used, a limit baffle 24 is set according to the width of the steel truss beam 212, and the steel truss beam 212 and the lower I-beam (i.e., the beam of the continuous bridge deck) are connected and fixed with pre-embedded bolts. Considering the influence of the metal of the steel truss beam 212 on noise reduction, a 3 cm thick honeycomb aluminum plate 213 is used on the upper part of the steel truss beam 212 as a metal noise reduction measure.

[0035] Furthermore, in this embodiment, the hoop member 3 includes two hoop plates 31 spliced ​​to each other, the two hoop plates 31 are spliced ​​to each other and fixed by bolts 33 after splicing, the hoop plates 31 are processed according to the specifications of the pier 12, and the two hoop plates 31 are arranged in a mirror image.

[0036] See also Figure 2 and Figure 3As shown, the bracket assembly 4 includes a cross bar 41 fixedly connected to one of the hoop members 3 and arranged along the column direction perpendicular to the pier 12, and a diagonal brace 42 fixedly connected obliquely between the other hoop member 3 and the end of the cross bar 41 on the side facing away from the pier 12, and a height adjustment bracket 43 is fixedly connected between the cross bar 41 and the sound barrier beam 21. Preferably, the height adjustment bracket 43 includes two vertical poles 431 fixedly installed on the cross bar 41 in the vertical direction and a plurality of support rods 433 fixedly connected between the two vertical poles 431, a connecting rod 432 is fixedly connected between the ends of the two vertical poles 431 on the side facing away from the cross bar 41, and the side of the connecting rod 432 facing away from the two vertical poles 431 is fixedly connected to the corresponding limit baffle 24. It should be noted that in this embodiment, the cross bar 41 and the diagonal brace 42 are made of double H-shaped steel with the same cross-sectional specifications, and are connected to the hoop member 3 and the cross bar 41 by welding.

[0037] Furthermore, the height-adjusting bracket 43 is arranged using a portal steel frame, the vertical pole 431 is made of a steel round tube, the connecting rod 432 is made of an I-beam embedded in the top of the vertical pole 431, and the support rod 433 is provided to ensure the integrity of the two vertical poles 431. The support rod 433 is provided with two horizontal and one oblique ones, and the connection between the rods is in the form of welding.

[0038] Furthermore, the distance between the two hoop members 3 is determined according to the cantilever length of the corbel assembly 4. According to the study of force stability, the ratio of the distance between the upper and lower hoop members 3 to the cantilever length of the steel corbel (i.e., the length of the cross bar 41) must be greater than 1. The width of the hoop piece 31 is determined according to the cross-sectional dimensions of the diagonal struts 42 and the cross bar 41 and the dynamic load size of the sound barrier, and the width of the hoop piece 31 is greater than or equal to √2 times the cross-sectional length of the diagonal struts 42. The rubber pads are arranged according to the position of the hoop, and the width of the rubber pads is determined according to the width of the hoop. The rubber pads must be set flat without a large amount of misalignment.

[0039] A construction method for environmentally friendly reinforcement of an existing railway assembly type is provided. Environmentally friendly reinforcement of an existing railway is achieved through the above-mentioned environmentally friendly reinforcement structure of the existing railway assembly type. The construction method comprises the following steps:

[0040] Position and fix the rubber pad at the location where the clamp assembly is to be installed in advance, and lift the clamp assembly to the location where it needs to be installed by lifting machinery, so as to fix the clamp assembly on the outer peripheral side of each pier;

[0041] Assemble and anti-corrosion the connecting rods in the bracket assembly at an available site, and then use a car crane to hoist the entire assembly during the window period to install the bracket assembly and fix the bracket assembly to the hoop assembly;

[0042] Use a crane to install a sound barrier beam on the side of the bracket assembly relatively far from the clamp assembly, fix the sound barrier beam to the continuous bridge deck, and install a limit baffle at the corresponding position on the sound barrier beam;

[0043] During the window period, multiple sound barrier units are installed on the barrier beam, and the multiple sound barrier units are spliced ​​end to end.

[0044] It should be noted that the working principle of the embodiment of the present invention includes: considering that the pier structure is generally a variable cross-section form, utilizing the characteristic that the lower cross-section of the pier is larger than the upper cross-section, adopting this support system to transmit the load generated by the sound barrier to the hoop assembly through the steel corbel assembly, utilizing the friction between the hoop assembly and the pier to transmit the load to the pier, and then to the foundation through the pier. At the same time, the hoop assembly can increase the lateral constraint of the existing railway piers, thereby reinforcing the existing railway piers.

[0045] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. An existing railway assembled environmental protection reinforcement structure, the existing railway comprises a continuous bridge deck and a plurality of piers supported at the bottom of the continuous bridge deck, characterized in that: The existing railway assembled environmental protection reinforcement structure includes: A sound barrier assembly, comprising a sound barrier beam fixedly mounted on the side of the continuous bridge deck and arranged along the extension direction of the continuous bridge deck, and a plurality of sound barrier units mounted on the sound barrier beam in a manner of being spliced ​​end to end; The support system includes a plurality of clamp assemblies respectively fixedly installed on the outer peripheral sides of the plurality of piers and a plurality of bracket assemblies respectively fixedly connected between the sound barrier beam and the plurality of clamp assemblies.

2. The existing railway assembled environmental protection reinforcement structure as claimed in claim 1, characterized in that: A limit baffle is fixedly installed on the sound barrier beam at a position corresponding to each of the piers, and the corbel assembly is fixedly connected between the corresponding limit baffle and the clamp assembly.

3. The existing railway assembled environmental protection reinforcement structure as claimed in claim 2, characterized in that: The clamp assembly includes two clamp members arranged at intervals along the axial direction of the pier, the corbel assembly includes a cross bar fixedly connected to one of the clamp members and arranged in a direction perpendicular to the column body of the pier, and a diagonal support bar obliquely fixedly connected to the other clamp member and the end of the cross bar on the side facing away from the pier, and a height adjustment bracket is fixedly connected between the cross bar and the sound barrier beam.

4. The existing railway assembled environmental protection reinforcement structure as claimed in claim 3, characterized in that: A rubber pad is provided between each of the hoop members and the pier column.

5. The existing railway assembled environmental protection reinforcement structure as claimed in claim 3, characterized in that: The height-adjusting bracket includes two vertical poles fixedly mounted on the cross bar along the vertical direction and a plurality of support poles fixedly connected between the two vertical poles, a connecting rod is fixedly connected between the ends of the two vertical poles facing away from the cross bar, and a side of the connecting rod facing away from the two vertical poles is fixedly connected to the corresponding limit baffle.

6. The existing railway assembled environmental protection reinforcement structure as claimed in claim 5, characterized in that: The ratio of the distance between the two clamping members to the length of the cross bar is greater than 1.

7. The existing railway assembled environmental protection reinforcement structure as claimed in claim 5, characterized in that: The hoop member comprises two hoop plates spliced ​​to each other, and the two hoop plates are spliced ​​to each other and fixed by bolts after splicing.

8. The existing railway assembled environmental protection reinforcement structure as claimed in claim 7, characterized in that: The width of the clamping plate is greater than or equal to √2 times the cross-sectional length of the diagonal brace.

9. An existing railway assembly type environmental protection reinforcement construction method, characterized in that: The environmental protection reinforcement of the existing railway is achieved by the existing railway assembled environmental protection reinforcement structure as claimed in claim 1, and the construction method includes the following steps: A clamp assembly is fixedly installed on the outer peripheral side of each pier; Install the bracket assembly and fix the bracket assembly to the hoop assembly; Install a sound barrier beam on the side of the corbel assembly relatively far from the hoop assembly, and fix the sound barrier beam to the continuous bridge deck; A plurality of sound barrier units are installed on the barrier beam, and the plurality of sound barrier units are spliced ​​end to end.

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