Method for replacing T beam through railway station

Abstract

The invention relates to a method for replacing a T-beam by using a railway station, which comprises the following steps of: selecting an existing beam manufacturing enterprise to prefabricate the required T-beam, reconstructing the existing railway station within the range of an existing railway red line to form an in-station reconstructed beam storage field and a temporary shortcut, and transporting to a demolished railway bridge through the existing railway line to complete the replacement of the T-beam. The method breaks through the conventional concept, fully utilizes the existing resources, reasonably reconstructs the railway station in a compliance manner, arranges the large temporary project in the railway red line range, avoids occupying large-area temporary land, saves the time of land expropriation and demolition and beam manufacturing field construction, and is stable in construction period, reasonable in project and economical in investment. The method is suitable for T-beam replacement projects of existing mountainous railway bridges and river-crossing railway bridges.

Description

Technical Field

[0001] This invention belongs to the field of railway engineering technology, and specifically relates to a method for replacing T-beams at railway stations. Background Technology

[0002] As railways age, their service life and operational safety face severe challenges, particularly for T-beams on mountainous and river-crossing railway bridges. After years of operation, these bridges often exhibit defects such as beam cracks, widespread cracking along the prestressed steel wire bundles, excessive camber, end-sealing concrete spalling, diaphragm breakage, and drainage failure. Common repair methods can only slow down the progression of these defects and cannot improve beam performance or completely solve the problems. Therefore, replacing the beams is an inevitable choice to ensure the safe and stable operation of existing railway bridges.

[0003] However, in the existing technology, beam replacement projects require the acquisition of large-scale temporary land for the construction of beam fabrication (storage) yards. This not only involves issues such as land acquisition approval procedures and demolition, but also issues such as the time required to construct (storage) beam yards and the difficulty of the project, which seriously affects the stability of the construction period and even the final project investment. Summary of the Invention

[0004] The purpose of this invention is to provide a method for replacing T-beams using railway stations to solve the problems mentioned in the background art. It is applicable to the replacement of T-beams for existing mountain railway bridges and river-crossing railway bridges. It breaks through conventional concepts, makes full use of existing resources, and reasonably and compliantly renovates railway stations. It sets up temporary works within the railway red line, avoids the occupation of large areas of temporary land, saves time on land acquisition, demolition, and construction of beam fabrication yards, ensures stable construction period, reasonable project, and economical investment.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A method for replacing T-beams at a railway station includes the following: The existing railway station located on the conventional mountainous railway line where the railway bridge requiring T-beam replacement is situated, with a freight yard and space for renovation, will be renovated within the existing railway red line area to form a beam storage yard and temporary access road within the station. The required T-beams will be prefabricated using existing beam manufacturing enterprises around the existing railway station 3. The temporary access road will connect to the existing highway outside the existing railway red line for transporting the T-beams to the beam storage yard. The T-beams in the beam storage yard will be transported to the demolished railway bridge via the existing railway line to complete the T-beam replacement.

[0006] Furthermore, the existing beam fabrication enterprise is located outside the existing railway red line and is connected to the existing railway station by an existing highway, with a distance not exceeding 300 km.

[0007] Furthermore, the renovated beam storage yard within the station is located on one side of the existing railway station freight yard, and includes a bridge erecting machine assembly area, a track panel assembly area, a material storage area, and a T-beam storage area. The track panel assembly area, the material storage area, and the T-beam storage area are all located within the coverage area of ​​the gantry crane.

[0008] Furthermore, during beam replacement, the bridge erecting machine, which is assembled in the bridge erecting machine assembly area, travels along the existing railway line to the railway bridge where the T-beams to be replaced and removes the old beams. The bridge erecting machine then uses the existing railway line to travel back and forth between the railway bridge where the T-beams to be replaced and the T-beam storage area, the track panel assembly area, and the material stacking area, gradually completing the transportation and replacement of the T-beams and the laying of the track panels and ballast.

[0009] Furthermore, the bridge erecting machine assembly area is arranged parallel to one side of the cargo line, and the distance between the bridge erecting machine assembly area adjacent to the cargo line and the cargo line is not less than 2.44m.

[0010] Furthermore, the rail panel assembly area is located between the two tracks of the first gantry crane traveling rail of the first gantry crane covering the area, and includes a rail panel assembly base and a rail panel base line located on one side of the rail panel assembly base.

[0011] Furthermore, the material stacking area is located between the two tracks of the second gantry crane traveling rail of the second gantry crane covering the area, and includes a material stacking base and a material stacking base line located on one side of the material stacking base.

[0012] Furthermore, the T-beam storage area is located between the two tracks of the third gantry crane traveling rail of the third gantry crane covering the area, and includes a beam storage base and a beam storage base line located on one side of the beam storage base.

[0013] Furthermore, the track assembly base, the material storage base, and the beam storage base are equipped with drainage ditches and freight car access according to actual needs.

[0014] Furthermore, the rail base line, the material stacking base line, and the beam storage base line are existing or renovated cargo lines, all located between the gantry crane travel rails covering each area. When conditions permit, the rail base line and the beam storage base line can share a single cargo line.

[0015] Furthermore, the first, second, and third gantry cranes all employ double gantry crane operation, with corresponding models configured according to requirements.

[0016] Furthermore, the first gantry crane traveling rail, the second gantry crane traveling rail, and the third gantry crane traveling rail are all composed of two parallel straight traveling rails, which are set up close to the cargo line and the distance between the parallel traveling rails is not less than 3m. When conditions permit, the traveling rails in adjacent areas can be co-linear.

[0017] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a method for replacing T-beams using railway stations, breaking away from conventional railway bridge beam replacement thinking. It fully utilizes existing surrounding resources, allowing the functions of beam fabrication, storage, and transportation—as defined by conventional beam yards—to be undertaken by existing beam fabrication companies, station renovations, temporary access roads, and existing highways, respectively. By rationally and compliantly renovating railway stations, the scale of temporary works is reduced, and these works are located within the railway's right-of-way, avoiding the acquisition of large areas of temporary land, even basic farmland. This saves time and economic costs associated with land acquisition, demolition, and beam yard construction, ensuring a stable construction period, reasonable project design, and economical investment. It is applicable to T-beam replacement projects for existing mountain railway bridges and river-crossing railway bridges. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention.

[0019] Figure 1 This is a schematic plan view of the method for replacing T-beams at railway stations according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the planar layout of the track assembly area in an embodiment of the present invention; Figure 3 This is a schematic diagram of the material stacking area layout in an embodiment of the present invention; Figure 4 This is a schematic diagram of the plan layout of the T-beam storage area in an embodiment of the present invention; Figure 5 This is a three-dimensional structural diagram of the track assembly area in an embodiment of the present invention; Figure 6 This is a three-dimensional structural diagram of the material stacking area in an embodiment of the present invention; Figure 7 This is a three-dimensional structural diagram of the T-beam storage area in an embodiment of the present invention; Figure 8 This is a three-dimensional structural diagram of the bridge erecting machine assembly area in an embodiment of the present invention.

[0020] Map labels: 1-Existing railway station, 2-Railway bridge, 3-Existing railway line, 4-Existing beam fabrication enterprise, 5-Reconstructed beam storage yard within the station, 6-Temporary access road, 7-Existing railway right-of-way, 11-Existing railway station line, 41-T-beam, 51-Bridge erecting machine assembly area, 52-Track panel assembly area, 53-Material storage area, 54-T-beam storage area, 521-Track panel assembly base, 522-Track panel base line, 523-First gantry crane, 524 - First gantry crane travel rail, 525- First drainage ditch, 526- Rail panel assembly area, 531- Material storage base, 532- Material storage base line, 533- Second gantry crane, 534- Second gantry crane travel rail, 535- Second drainage ditch, 536- Material storage area, 541- Beam storage base, 542- Beam storage base line, 543- Third gantry crane, 545- Third drainage ditch, 546- Freight truck access road, 547- Beam support. Detailed Implementation

[0021] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the invention to those skilled in the art. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] This embodiment provides a method for replacing T-beams at a railway station, such as... Figures 1 to 8 As shown, in this embodiment, the existing beam manufacturing enterprise 4 prefabricates the required T beams 41. The existing railway station 1 on the existing railway line 3 of the railway bridge 2 to be replaced is rebuilt within the existing railway red line 7 to form an in-station rebuilt beam storage yard 5 and a temporary access road 6. The beams are then transported to the demolished railway bridge 2 via the existing railway line 3 to complete the replacement of the T beams.

[0023] Existing railway station 1 is located on existing railway line 3, has a freight yard, and has a certain amount of space for reconstruction within the existing railway red line 7.

[0024] The existing beam fabrication enterprise 4 is located outside the existing railway red line 7 and is connected to the existing railway station 1 by an existing highway. The distance between them should not exceed 300 km.

[0025] The beam storage yard 5, which is being renovated within the station, is located on one side of the freight yard of the existing railway station 1, within the existing railway red line 7.

[0026] Temporary access road 6 is a temporary roadway for highway transportation, which connects to the existing highway outside the existing railway red line 7, and the road surface width is not less than 5m.

[0027] The existing railway red line 7 represents the area occupied by the existing railway, i.e., the land used by the existing railway.

[0028] The beam storage yard 5 within the station includes a bridge erecting machine assembly area 51, a track panel assembly area 52, a material storage area 53, and a T-beam storage area 54. The track panel assembly area 52, material storage area 53, and T-beam storage area 54 are all located within the gantry crane coverage area. The area and layout of each area within the beam storage yard 5 are planned according to the actual renovation space of each existing railway station 1. The gantry crane model covering the track panel assembly area 52, material storage area 53, and T-beam storage area 54 is selected based on the actual renovation site conditions. Each area can be equipped with its own gantry crane, or, where conditions permit, adjacent areas or several areas can use the same specification gantry crane, with a unified arrangement of the gantry crane's running rails. In this embodiment, each area is equipped with its own gantry crane and running rails.

[0029] Bridge erecting machine assembly area 51 is arranged parallel to one side of the cargo line, such as... Figure 8 As shown, the distance b between the side closest to the cargo line and the cargo line should not be less than 2.44m, and its size should meet the assembly requirements of the corresponding model of bridge erecting machine.

[0030] The track panel assembly area 52 includes the track panel assembly base 521, the track panel base line 522, the first gantry crane 523, and the first gantry crane travel rail 524. Its layout should meet the needs of dismantling and laying new bridge tracks and sleepers.

[0031] The material storage area 53 includes a material storage base 531, a material storage base line 532, a second gantry crane 533, and a second gantry crane travel rail 534. Its surface must be hardened to facilitate the storage of materials such as ballast, angle steel supports, and walkway slabs.

[0032] The T-beam storage area 54 includes a beam storage base 541, a beam storage base line 542, a third gantry crane 543, and a third gantry crane travel rail 544. Its layout should meet the needs of the new bridge T-beam laying operation.

[0033] The rail panel assembly base 521, material storage base 531, and beam storage base 541 must all be located within the corresponding gantry crane operation coverage area and equipped with drainage ditches and freight car passages according to actual needs. In this embodiment, a first drainage ditch 525, a second drainage ditch 535, and a third drainage ditch 545 are respectively provided in the rail panel assembly base 521, the material storage base 531, and the beam storage base 541, and a freight car passage 546 is provided in the beam storage base 541.

[0034] The track panel base line 522, material stacking base line 532 and beam storage base line 542 are existing or renovated cargo lines, all located between the gantry crane travel rails, and can be shared if conditions permit.

[0035] The first gantry crane 523, the second gantry crane 533, and the third gantry crane 543 all adopt double gantry crane operation, and the corresponding models are configured according to requirements.

[0036] The travel rails of the first gantry crane travel rail 524, the second gantry crane travel rail 534 and the third gantry crane travel rail 544 are all composed of two parallel straight travel rails, which are set close to the side of the cargo line, and the distance between the parallel travel rails is not less than 3m.

[0037] The specific beam replacement process in this embodiment is as follows: 1. Preparation Period: Transport the required equipment and materials to the corresponding areas, and enter the track closure period once everything is ready. This includes: ① After the existing beam fabrication company 4 completes all T-beam 41 prefabrication work, transport the T-beam 41 to the beam support 547 in the T-beam storage area 54 via the existing highway, temporary access road 6, freight truck access road 546, and the third gantry crane 543; ② Transport the prefabricated track panels to the track panel assembly area 52 in the renovated beam storage yard 5 within the station via the existing railway line 3; ③ Transport the bridge erecting machine to the bridge erecting machine assembly area 51 via highway.

[0038] 2. Track Closure and Beam Replacement Phase: The track closure window is opened, and each area enters the beam replacement work phase. This includes: ① Removing the old track panels and ballast on railway bridge 2 using railcars, etc.; ② The bridge erecting machine, which has been assembled in the bridge erecting machine assembly area 51, travels to railway bridge 2 via the existing railway line 3 to complete the removal of the old beams; ③ The bridge erecting machine, which has been assembled in the bridge erecting machine assembly area 51, transports the T-beams 41 in the T-beam storage area 54 to railway bridge 2 via the freight line to complete the installation; ④ The track panels and ballast in the track panel assembly area 52 and the material stacking area 53 are transported to railway bridge 2 in an orderly manner via the corresponding freight lines to complete the paving. 3. Track restoration period during track closure: After the beam replacement is completed, the equipment and materials are removed from the site, and the existing beam storage yard 5 and temporary access road 6 are demolished and the existing railway station 1 is restored.

[0039] 4. The beam replacement project was completed, and the railway resumed operation.

[0040] This embodiment provides a method for replacing T-beams using railway stations. It not only breaks through the conventional thinking on replacing railway bridge beams, but also makes full use of existing surrounding resources. The functions of beam fabrication, storage, and transportation at conventional beam yards are respectively undertaken by existing beam fabrication companies, station renovations and temporary access roads, and existing highways. Furthermore, by reasonably and compliantly renovating railway stations, the scale of temporary works is reduced, and the temporary works are located within the railway red line, avoiding the acquisition of large areas of temporary land, or even basic farmland. This saves time and economic costs associated with land acquisition, demolition, and the construction of beam fabrication yards. It also includes a reasonable and compact beam replacement process to ensure safe and orderly implementation during the long construction window, thereby ensuring the stability of the construction period, the rationality of project implementation, and the economic efficiency of project investment.

[0041] The embodiments of the present invention have been described in detail above through examples, but the content described is only an exemplary embodiment of the present invention and should not be considered as limiting the scope of implementation of the present invention. The protection scope of the present invention is defined by the claims. Any technical solutions designed by those skilled in the art using the technical solutions described in the embodiments of the present invention, or designed by those skilled in the art under the inspiration of the technical solutions of the embodiments of the present invention, within the substance and protection scope of the present invention, to achieve the above-mentioned technical effects, or any equivalent changes and improvements made to the scope of the application, should still fall within the patent protection scope of the present invention.

Claims

1. A method of replacing a T-beam with a railway station, characterized by, The application relates to a method for replacing T-beams of a railway bridge (2) located on a common-speed mountainous common railway line (3), wherein a common railway station (1) provided with a freight yard and having a reconstruction space is reconstructed within a common railway red line (7) to form a station-reconstructed beam storage yard (5) and a temporary road (6), T-beams required by the common railway station (1) are prefabricated by a common beam manufacturing enterprise (4) around the common railway station (1), the temporary road (6) is connected with a common highway outside the common railway red line (7) and is used for transporting the T-beams to the beam storage yard (5), and the T-beams in the beam storage yard (5) are transported to the railway bridge (2) after the railway bridge (2) is removed to complete the replacement of the T-beams. The common beam manufacturing enterprise (4) is located outside the common railway red line (7) and is connected with the common railway station (1) through a common highway, and the distance between the common beam manufacturing enterprise (4) and the common railway station (1) should not be greater than 300 km.

2. A method of replacing T-beams with railway stations according to claim 1, characterized in that, The station-reconstructed beam storage yard (5) is located on one side of a freight yard of the common railway station (1) and is provided with a bridge-erection machine assembling area (51), a track panel assembling area (52), a material stacking area (53) and a T-beam storage area (54), wherein the track panel assembling area (52), the material stacking area (53) and the T-beam storage area (54) are located in a coverage area of a gantry crane, and the scales of the areas should meet the corresponding operation requirements.

3. The method of replacing T-beams with a railway station according to claim 1, wherein, During the replacement of the T-beams, a bridge-erection machine assembled in the bridge-erection machine assembling area (51) is transported to the railway bridge (2) to be replaced through the common railway line (3) to remove old beams, the bridge-erection machine is used to sequentially and reciprocally move between the railway bridge (2) to be replaced, the T-beam storage area (54), the track panel assembling area (52) and the material stacking area (53) through the common railway line (3), and the T-beam transportation, replacement and track panel and ballast paving operations are gradually completed.

4. The method of replacing T-beams with a railway station according to claim 3, wherein, The bridge-erection machine assembling area (51) is arranged in parallel on one side of a freight line, and the distance b between the bridge-erection machine assembling area (51) and the freight line on the freight line side is not less than 2.44 m.

5. The method of replacing T-beams with a railway station according to claim 3, wherein, The track panel assembling area (52) is located between two tracks of a first gantry crane running track (524) of a first gantry crane (523) covering the area, and comprises a track panel assembling base (521) and a track panel base line (522) located on one side of the track panel assembling base (521); the material stacking area (53) is located between two tracks of a second gantry crane running track (534) of a second gantry crane (533) covering the area, and comprises a material stacking base (531) and a material stacking base line (532) located on one side of the material stacking base (531); and the T-beam storage area (54) is located between two tracks of a third gantry crane running track (544) of a third gantry crane (543) covering the area, and comprises a beam storage base (541) and a beam storage base line (542) located on one side of the beam storage base (541).

6. The method of replacing T-beams with a railway station according to claim 3, wherein, The track panel assembling base (521), the material stacking base (531) and the beam storage base (541) are provided with drainage ditches and freight car passages according to actual requirements.

7. A method of replacing T-beams with railway stations according to claim 6, characterized in that, ​ 8. The method of replacing T-beams with a railway station according to claim 6, wherein, The rail base line (522), the material stacking base line (532), and the beam storage base line (542) are existing or renovated cargo lines, all located between the gantry crane travel rails covering each area. When conditions permit, the rail base line (522), the material stacking base line (532), and the beam storage base line (542) can share a single cargo line.

9. The method of replacing T-beams with a railway station of claim 6, wherein, The first gantry crane (523), the second gantry crane (533) and the third gantry crane (543) all adopt double gantry crane operation, and the corresponding models are configured according to requirements.

10. The method of replacing T-beams with a railway station of claim 6, wherein, The first gantry crane traveling rail (524), the second gantry crane traveling rail (534), and the third gantry crane traveling rail (544) are all composed of two parallel straight traveling rails, which are set up close to the cargo line and the distance between the parallel traveling rails is not less than 3m. When conditions permit, the traveling rails in adjacent areas can be co-linear.

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