Railway through plate girder bridge construction method and railway through plate girder bridge structure

Abstract

The present invention relates to a railway through plate girder bridge construction method and a railway through plate girder bridge structure, which do not require blocking of a train, reduce construction costs for track restoration, and minimize a soil cover depth for providing a culvert unit. To this end, the railway through plate girder bridge construction method comprises: a section dismantlement step of dismantling a removal track included in a temporary section of operating tracks through which a train passes; a pile provision step of coupling each of two end portions of a beam support pile to a group pile driven into a roadbed such that the plurality of beam support piles elongated in the transverse direction of the operating track are arranged to be spaced apart from each other in the longitudinal direction of the operating track in the temporary section; and a girder provision step of stacking and coupling a through girder onto the beam support piles such that the through girder elongated in the longitudinal direction of the operating track is coupled to the beam support piles in the longitudinal direction of the operating track in the temporary section.

Description

Construction method of railway halo-pan girder bridges and railway halo-pan girder bridge structures

[0001] The present invention relates to a method for constructing a railway halo-plate girder bridge and a railway halo-plate girder bridge structure, and more specifically, to a method for constructing a railway halo-plate girder bridge and a railway halo-plate girder bridge structure that do not require train blocking, reduce construction costs for track restoration, and minimize the soil cover for installing a culvert unit.

[0002] Typically, a bridge is a temporary structure erected to bridge construction, renovation, expansion, reinforcement, or other construction, or to cover excavated sections for emergency routes during disaster recovery. Unlike conventional bridges, bridges must be constructed or demolished quickly and within a limited timeframe, at minimal construction cost, to accommodate diverse on-site conditions.

[0003] This was especially true when constructing a railway support, and a support method was provided in which H-beams were usually driven in on both sides to form columns, a support crossbeam was installed on the upper side of the columns, and at the same time, crossbeams and vertical beams were extended on the upper side, and bridge sleepers were installed so that the rails were positioned on the upper side.

[0004] However, after installing these conventional rail supports, trains would initially travel at high speeds, but would slow down upon reaching the supports, passing through at approximately 40 km / h. Consequently, similar work could not be performed within approximately 20 km of the installed rail supports, creating the problem of overlapping work being impossible.

[0005] While this type of support method offers the advantage of low cost, trains must slow down to pass through the support before accelerating again, resulting in significant delays and significant challenges for trains that must adhere to scheduled service times. Furthermore, construction must be started and completed quickly during low-traffic hours at night, resulting in numerous problems due to the delays, and its application was limited to certain lines. Furthermore, the requirement to slow trains as described above hinders passenger comfort and reduces travel times, degrading service quality and extending construction periods.

[0006] Meanwhile, existing halo-pan girder bridges required trains to be shut down for support installation, which limited work hours and required changes or delays in operation. Furthermore, the installation of a culvert at the intended location increased the soil cover required for the structure, making it difficult to secure the intended height.

[0007] The purpose of the present invention is to solve the problems of the past, and to provide a method for constructing a railway halo plate girder bridge and a railway halo plate girder bridge structure that do not require train blocking, reduce construction costs for track restoration, and minimize the soil cover for installing a culvert unit.

[0008] According to a preferred embodiment for achieving the above-described object of the present invention, a method for constructing a railway halo girder bridge according to the present invention includes a section demolition step in which a demolition track included in a construction section of a maintenance track through which a train passes is demolished; a pile installation step in which a plurality of beam support piles formed long along the transverse direction of the maintenance track are spaced apart from each other along the longitudinal direction of the maintenance track in the construction section, and both ends of the beam support piles are respectively connected to group piles driven into the roadbed; and a girder installation step in which a halo girder formed long along the longitudinal direction of the maintenance track is connected to the beam support piles in a laminated manner along the longitudinal direction of the maintenance track in the construction section, and the halo girder is connected to the beam support piles.

[0009] At this time, the halogirder includes a plurality of transverse beams formed long along the transverse direction of the support track and spaced apart from each other along the longitudinal direction of the support track; a pair of longitudinal beams formed long along the longitudinal direction of the support track so that both ends of the transverse beams are joined and laminated and connected to the beam support pile; a connecting member connecting both ends of the transverse beams to the pair of longitudinal beams; and a sleeper connecting member formed long along the longitudinal direction of the support track and connecting the plurality of transverse beams between the pair of longitudinal beams.

[0010] According to the construction method of a railway halo-pan girder bridge and the railway halo-pan girder bridge structure according to the present invention, there is no need to block a train, construction costs for track restoration are reduced, and the soil cover for installing a culvert unit can be minimized.

[0011] In particular, the removal of the demolished track, installation of the beam support piles, and installation of the underpass girder are all accomplished during the night, during a period of 3 to 5 hours when trains are not in operation, eliminating the need for train interruption. Furthermore, the use of modular underpass girders reduces track restoration costs and minimizes the soil cover required for the installation of the culvert unit. Furthermore, there are no restrictions on train speed or frequency, and the system offers excellent versatility, enabling it to overcome train height and incline differences between upstream and downstream lines.

[0012] Furthermore, the present invention enables driving of group piles independently of the passage of a train. Furthermore, the strength of the group piles is enhanced through the bonding relationship between the group piles, preventing the movement of the individual piles in the roadbed, and facilitating the connection of the individual piles, pile restraint rings, and coupling plates. Furthermore, bearing capacity can be secured under various roadbed soil conditions.

[0013] In addition, the present invention can easily and firmly connect a unit file and a file restraint ring through a connection relationship of a file home.

[0014] Furthermore, the present invention simplifies the construction of railway halo-panel girder bridges by utilizing modularized halo-girders. Furthermore, the detailed connection of the halo-girders enhances the strength of the transverse beams and prevents sagging of the girder rails within the halo-girders. Furthermore, since the halo-girders include inclined extension members, noise generated when a train passes over them can be reduced and the halo-girders can be stabilized.

[0015] In addition, the present invention can improve the bonding strength between the beam support pile and the lower girder through the bonding relationship of the joint floor plate, and can fix the lower girder in place on the beam support pile. In addition, the strength of the longitudinal beam can be strengthened and the deflection of the lower girder can be prevented through the bonding relationship of the girder reinforcing member. In addition, the girder rail can be easily bonded to the lower girder through the bonding relationship of the rail fastening member, and noise and vibration can be reduced by 70 to 80% or more through the vibration-proof function. In addition, the transportation of the lower girder can be smoothly performed through the bonding relationship of the lifting hook. In addition, after the lower girder is installed, the movement of workers can be smoothly performed through the bonding relationship of the bridge sidewalk, and the interference of workers with the train can be prevented. In addition, the bonding relationship of the girder adjustment member can easily adjust at least one of the installation height and the inclination of the lower girder on the beam support pile, and the connection between the maintenance track and the construction track can be stabilized. Furthermore, the connection between the fastening adjustment members facilitates the adjustment of at least one of the installation height and inclination of the girder rail in the lower girder, thereby stabilizing the connection between the maintenance track and the temporary track. Furthermore, when the lower girder and girder rail form a curved section of the track, train instability due to centrifugal force can be prevented, ensuring smooth train operation.

[0016] In addition, the present invention can stabilize the installation of beam support piles by leveling the roadbed in the construction section along with the demolition of the demolition track.

[0017] Furthermore, the present invention facilitates the smooth operation of trains by easily connecting the maintenance track and the temporary track through the joint relationship of the girder rails. Furthermore, the maintenance track and the new track can be easily connected, facilitating smooth train operation. Furthermore, the removal of the temporary track and the construction of the new track are simplified, and the construction of the new track does not require the interruption of the train.

[0018] In addition, the present invention clearly enables the demolition of a temporary track and the construction of a new track through a coupling relationship in the new track construction stage, and allows the new track to be easily installed in the temporary section.

[0019] Furthermore, the present invention facilitates the installation of a culvert unit beneath a newly constructed track during the culvert installation phase, facilitating the construction of a cross-road crossing the newly constructed track. Furthermore, compared to existing construction methods, it is advantageous in maintaining the linearity of the cross-road.

[0020] In addition, the present invention can fix the culvert unit in place on the roadbed of the construction section according to the coupling relationship of the culvert installation step.

[0021] In addition, since the new gravel is installed on the roadbed, the present invention facilitates the supply of new gravel for the new track, reduces the time and cost required for the new track, and enables the new track to be easily installed at night.

[0022] Furthermore, the present invention is applicable to all types of tracks, including single-track and double-track tracks, and can implement both straight and curved sections. Furthermore, it minimizes the construction period required to install temporary tracks, offering excellent cost-effectiveness. Furthermore, it facilitates waterproofing and ensures excellent quality for temporary tracks, new tracks, and culvert units.

[0023] Figure 1 is a flowchart illustrating a method for constructing a railway halo-plate girder bridge according to one embodiment of the present invention.

[0024] Figure 2 is a plan view showing a pile driving step in a method for constructing a railway halo-plate girder bridge according to one embodiment of the present invention.

[0025] FIG. 3 is a plan view showing the installation state of a group pile in a method for constructing a railway halo-paneled bridge according to one embodiment of the present invention.

[0026] Figure 4 is a longitudinal cross-sectional view showing the installation state of a group pile in a construction method of a railway halo-pan girder bridge according to one embodiment of the present invention.

[0027] Figure 5 is a plan view showing a section demolition step in a construction method of a railway halo-pan girder bridge according to one embodiment of the present invention.

[0028] Figure 6 is a plan view showing a pile installation step in a method for constructing a railway halo-plate girder bridge according to one embodiment of the present invention.

[0029] Figure 7 is a plan view showing a girder installation step and a rail installation step in a method for constructing a railway lower plate girder bridge according to one embodiment of the present invention.

[0030] Fig. 8 is a side view illustrating a haro girder in a method for constructing a railway haro girder bridge according to one embodiment of the present invention.

[0031] FIG. 9 is a front view showing a halo girder in a construction method of a railway halo girder bridge according to one embodiment of the present invention, (a) shows a state in which a halo girder is supported in a stacked manner on a beam support pile, (b) shows a state in which a girder step member and a halo girder are supported in a stacked manner on a beam support pile, and (c) shows a state in which a girder slope member and a halo girder are supported in a stacked manner on a beam support pile.

[0032] Fig. 10 is an enlarged plan view showing a haro girder in a construction method of a railway haro girder bridge according to one embodiment of the present invention.

[0033] Figure 11 is a plan view showing a culvert installation step in a method for constructing a railway lower girder bridge according to one embodiment of the present invention.

[0034] Figure 12 is a plan view showing a girder demolition step in a method for constructing a railway lower plate girder bridge according to one embodiment of the present invention.

[0035] Figure 13 is a plan view showing the pile removal step and the site cleanup step in the construction method of a railway halo-pan girder bridge according to one embodiment of the present invention.

[0036] Fig. 14 is a front view showing the installation state of a new track in a method for constructing a railway halo-plate girder bridge according to one embodiment of the present invention.

[0037] Hereinafter, with reference to the attached drawings, a method for constructing a railway halo-plate girder bridge and an embodiment of a railway halo-plate girder bridge structure according to the present invention will be described. The present invention is not limited or restricted by these embodiments. Furthermore, in describing the present invention, detailed descriptions of known functions or components may be omitted to clarify the gist of the present invention.

[0038] Hereinafter, a railway halo-plate girder bridge structure according to an embodiment of the present invention will be described. A railway halo-plate girder bridge structure according to an embodiment of the present invention may include a plurality of group piles (10), a plurality of beam support piles (20), and halo girders (30). Then, the group piles (10), the beam support piles (20), and the halo girders (30) may be installed on or removed from the roadbed (B) using a construction method of a railway halo-plate girder bridge according to an embodiment of the present invention.

[0039] The longitudinal direction is the direction in which the train moves on the maintenance track (KT) based on the maintenance track (KT) that the train passes through during the operating time, and the transverse direction is the direction in which the train crosses the maintenance track (KT) based on the maintenance track (KT) that the train passes through during the operating time, and intersects or is perpendicular to the longitudinal direction.

[0040] A group pile (10) is driven into the roadbed (B) along the longitudinal direction of the maintenance track (KT) on both sides of the demolition track (DT) included in the temporary section (A) of the maintenance track (KT) through which the train passes. Two or more group piles (10) are arranged at a distance from each other along the longitudinal direction of the maintenance track (KT) on both sides of the demolition track (DT).

[0041] The group pile (10) may include a plurality of unit piles (11) driven into the subgrade (B) so that they can be in close contact with each other longitudinally and transversely as shown in FIGS. 3 and 4, a pile restraining ring (12) that surrounds and restrains the plurality of unit piles (11) driven into the subgrade (B), a connecting plate (13) that is laminated and connected to the pile restraining ring (12) at the upper end of the plurality of unit piles (11) driven into the subgrade (B), and a joint member (14) that connects the pile restraining ring (12) and the connecting plate (13).

[0042] The unit pile (11) may have an H-beam shape. The pile restraint ring (12) may have a hollow square frame shape so that a plurality of unit piles (11) can be inserted and supported. The pile restraint ring (12) can be coupled with the edge of the coupling plate (13). The coupling plate (13) may have a flat plate shape. The judge-joining member (14) may include a coupling hole formed through the edge of the pile restraint ring (12) and the coupling plate (13), a coupling bolt fitted into the coupling hole, and a coupling nut screwed into the coupling bolt so that the pile restraint ring (12) and the coupling plate (13) are in close contact.

[0043] At this time, a pile home (PE) is formed in the subgrade (B) corresponding to the installation position of the group pile (10) as shown in Fig. 4, so that a pile restraining ring (12) can be formed in multiple stages on a plurality of unit piles (11) driven into the subgrade (B).

[0044] The beam support piles (20) are formed long along the transverse direction of the maintenance track (KT) so as to be spaced apart from each other along the longitudinal direction of the maintenance track (KT) in the temporary section (A). Both ends of the beam support piles (20) are respectively connected to the group piles (10). The beam support piles (20) may have an H-beam shape.

[0045] The halo girder (30) is formed long along the longitudinal direction of the maintenance track (KT) so as to be connected to the beam support pile (20) along the longitudinal direction of the maintenance track (KT) in the temporary section (A) as illustrated in FIGS. 8 to 10. The halo girder (30) is laminated and connected to the beam support pile (20). At least one halo girder (30) may be provided along the longitudinal direction of the maintenance track (KT).

[0046] The halogirder (30) may include a plurality of transverse beams (31) formed long along the transverse direction of the support track (KT) and spaced apart from each other along the longitudinal direction of the support track (KT), a pair of longitudinal beams (32) formed long along the longitudinal direction of the support track (KT) so that both ends of the transverse beams (31) are joined and laminated and joined to a beam support pile (20), a connecting member (33) connecting both ends of the transverse beams (31) to the pair of longitudinal beams (32), and a sleeper connecting member (313) formed long along the longitudinal direction of the support track (KT) and connecting the plurality of transverse beams (31) between the pair of longitudinal beams (32).

[0047] The cross beam (31) may have an H-beam shape. The cross beam (31) may include a plurality of sleeper members (311) that are spaced apart from each other and connected to sleeper connecting members (313), and an inclined extension member (312) that extends obliquely from both ends of the sleeper member (311) so as to be connected to the longitudinal beam (32) via the connecting member (33). The plurality of sleeper members (311) are arranged in parallel at a cross beam (31) spacing that is 0.5 times or more the spacing of the maintenance sleepers included in the maintenance track (KT) and 2 times or less the spacing of the maintenance sleepers, and therefore do not require additional reinforcing elements.

[0048] The longitudinal beam (32) may have an H-beam shape. The longitudinal beam (32) can prevent deformation or damage due to its own load, the load of the transverse beam (31), external impact, etc., and can secure the stability of the connection with the transverse beam (31).

[0049] The joining member (33) may include a joining plate, joining holes formed through the joining plate and the longitudinal beam (32) and the transverse beam (31), a joining bolt fitted into the joining hole, and a joining nut screw-connected to the joining bolt so that the joining plate and the longitudinal beam (32) are in close contact and the joining plate and the transverse beam (31) are in close contact. The joining plate may include a transverse joining vertical portion that is joined to a vertical portion of the transverse beam (31), and a longitudinal joining vertical portion that is formed by bending the transverse joining vertical portion and is joined to a vertical portion of the longitudinal beam (32).

[0050] The judgment joint member (14) may include a joint hole formed through the edge of the file restraint ring (12) and the joint plate (13), a joint bolt fitted into the joint hole, and a joint nut screwed into the joint bolt so that the file restraint ring (12) and the joint plate (13) are in close contact.

[0051] The sleeper connecting member (313) may have an angle shape or a channel shape. The sleeper connecting member (313) can stably support the transverse beam (31) by preventing deformation or damage from the load of the transverse beam (31), external impact, etc.

[0052] The haro girder (30) is formed by a connecting floor plate (34) that is connected to the lower part of the longitudinal beam (32) for connection with the group pile (10), a girder reinforcing member (35) that is formed long along the longitudinal direction of the maintenance track (KT) or the longitudinal direction of the longitudinal beam (32) and is connected to at least one of the lower part of the longitudinal beam (32) and the upper part of the longitudinal beam (32), a rail fastening member (36) that is connected to the upper part of the transverse beam (31) on both sides of the sleeper connecting member (313) for connection of the girder rail (40), a lifting ring (37) that is connected to the upper part of the longitudinal beam (32) for transportation of the haro girder (30), and a lifting member (37) that is formed long along the longitudinal direction of the maintenance track (KT) or the longitudinal direction of the longitudinal beam (32) and is connected to at least one side of the longitudinal beam (32) or both sides of the longitudinal beam (32) on either side of the haro girder (30) for movement of workers. At least one of the side beams (38) coupled to the beam support pile (20) may be further included.

[0053] The joining floor plate (34) has a flat shape and can be joined with the joining plate (13) included in the group pile (10). The girder reinforcing member (35) can be laminated and joined in one to three stages. The rail fastening member (36) is provided with a vibration-proof function so that the noise or vibration transmitted through the girder rail (40) according to the operation of the train is dispersed and transmitted to the transverse beam (31). The lifting rings (37) are provided in pairs to ensure safe traction. The bridge sidewalk (38) can be attached and detached to the modularized lower girder (30), and thus can be joined to one side of the longitudinal beam (32) or both sides of the longitudinal beam (32) or to the beam support pile (20).

[0054] The halo girder (30) is formed long along the longitudinal direction of the track (KT) and may further include a girder rail (40) that is connected to a transverse beam (31) via a rail fastening member (36). The girder rail (40) may be pre-installed on the transverse beam (31) or the halo girder (30) in which the transverse beam (31), the longitudinal beam (32), the connecting member (33) and the sleeper connecting member (313) are connected may be installed on a beam support pile (20) and then installed on the transverse beam (31).

[0055] A railway halo plate girder structure according to one embodiment of the present invention may further include at least one of a girder adjusting member that is fitted between a beam support pile (20) and a halo girder (30), and a fastening adjusting member that is fitted between a transverse beam (31) included in the halo girder (30) and a rail fastening member (36) included in the halo girder (30).

[0056] The girder adjustment member adjusts at least one of the installation height of the lower girder (30) and the inclination of the lower girder (30) based on the beam support pile (20). The girder adjustment member can be divided into a girder step member (50) that adjusts the installation height of the lower girder (30) based on the beam support pile (20) as shown in (b) of FIG. 9, and a girder inclination member (60) that adjusts the inclination of the lower girder (30) based on the beam support pile (20) as shown in (c) of FIG. 9.

[0057] The rail adjustment member adjusts at least one of the installation height of the girder rail (40) and the inclination of the girder rail (40) based on the transverse beam (31) of the lower girder (30). The rail adjustment member can be divided into a rail step member that adjusts the installation height of the girder rail (40) based on the transverse beam (31) of the lower girder (30), and a rail inclination member that adjusts the inclination of the girder rail (40) based on the transverse beam (31) of the lower girder (30).

[0058] One embodiment of the present invention may include a culvert unit (70) that allows at least one of a vehicle and a pedestrian to pass through, such as a roadway or sidewalk crossing a new track (ET). The culvert unit (70) is formed of a concrete structure and is connected to a crossroad (CR) for crossing the new track (ET).

[0059] Hereinafter, a method for constructing a railway halo-plate girder bridge according to an embodiment of the present invention will be described with reference to FIGS. 1 to 14. The method for constructing a railway halo-plate girder bridge according to an embodiment of the present invention may include a section demolition step (S2), a pile installation step (S3), and a girder installation step (S4). At this time, the halo-plate girder (30) may include a plurality of transverse beams (31), a pair of longitudinal beams (32), a connecting member (33), and a sleeper connecting member (313) as described above.

[0060] In the section demolition stage (S2), as illustrated in Fig. 4, the demolition track (DT) included in the temporary section (A) of the maintenance track (KT) through which the train passes is demolished.

[0061] The section demolition step (S2) may include a track removal step (S21) in which the demolition track (DT) is demolished in the temporary section (A), and a section excavation step (S22) in which a section groove (AE) is formed in the temporary section (A). The section groove (AE) can prevent the beam support pile (20) from interfering with the subgrade (B) when the beam support pile (20) is installed by leveling the subgrade (B) in the temporary section (A).

[0062] In the pile installation step (S3), as illustrated in Fig. 6, a plurality of beam support piles (20) formed long along the transverse direction of the maintenance track (KT) are arranged at a distance from each other along the longitudinal direction of the maintenance track (KT) in the construction section (A), and both ends of the beam support piles (20) are connected to group piles (10) driven into the roadbed (B).

[0063] In the girder installation step (S4), as shown in Fig. 7, the halo girder (30) formed long along the longitudinal direction of the maintenance track (KT) is laminated and connected to the beam support pile (20) along the longitudinal direction of the maintenance track (KT) in the construction section (A).

[0064] The girder installation step (S4) may include a girder adjustment step (S41) in which at least one of the installation height of the lower girder (30) and the inclination of the lower girder (30) is adjusted based on the beam support pile (20). The girder adjustment step (S41) may be performed by fitting the girder adjustment member between the beam support pile (20) and the lower girder (30). Then, as the lower girder (30) is connected to the maintenance track (KT), the temporary track is installed in the temporary section (A), and the train can run normally on the maintenance track (KT) and the temporary track even without decelerating.

[0065] The girder installation step (S4) may include a sidewalk installation step in which a sidewalk (38) for the movement of workers is installed on one side of the longitudinal beam (32) or on both sides of the longitudinal beam (32). The sidewalk (38) may be connected to at least one of the longitudinal beam (32) and the beam support pile (20).

[0066] In one embodiment of the present invention, the section demolition step (S2), the pile installation step (S3), and the girder installation step (S4) are implemented during a period of 3 to 5 hours at night when there is no train operation, and thus do not require blocking of the train.

[0067] A method for constructing a railway halo-pan girder bridge according to one embodiment of the present invention may further include at least one of a pile driving step (S1), a rail installation step (S5), and a track construction step.

[0068] In the pile driving stage (S1), as illustrated in Fig. 2, multiple group piles (10) are driven into the roadbed (B) along the longitudinal direction of the maintenance track (KT) on both sides of the demolition track (DT).

[0069] The pile driving step (S1) may include a unit driving step (S12) in which a plurality of unit piles (11) are driven into the subgrade (B) so that the unit piles (11) can be in close contact with each other longitudinally and transversely in response to the installation position of the group pile (10), a pile restraint step (S13) in which a pile restraint ring (12) surrounds and restrains the plurality of unit piles (11) driven into the subgrade (B), and a judgment step (S14) in which a coupling plate (13) is coupled to the pile restraint ring (12) at the upper end of the plurality of unit piles (11) driven into the subgrade (B).

[0070] The pile driving step (S1) may further include a pile excavation step (S11) in which a pile home (PE) is formed in the roadbed (B) corresponding to the installation location of the group pile (10).

[0071] The pile driving stage (S1) is not restricted to nighttime hours when trains are not running, and can be carried out separately even during train operating hours.

[0072] In the rail installation step (S5), as illustrated in FIG. 7, a girder rail (40) connected to a maintenance rail included in a maintenance track (KT) is installed on a lower girder (30), or a girder rail (40) already installed on a lower girder (30) is connected to a maintenance rail included in a maintenance track (KT). Then, as the lower girder (30) and the girder rail (40) are connected to the maintenance track (KT), a temporary track is installed in the temporary section (A), and the train can run normally on the maintenance track (KT) and the temporary track even without decelerating.

[0073] The rail installation step (S5) may include a rail adjustment step (S51) in which at least one of the installation height of the girder rail (40) and the inclination of the girder rail (40) is adjusted based on the lower girder (30). The rail adjustment step (S51) may be performed by fitting a rail adjustment member between a transverse beam (31) included in the lower girder (30) and a rail fastening member (36) included in the lower girder (30).

[0074] It is desirable that the rail installation stage (S5) be carried out together with the girder installation stage (S4) during night hours when there is no train operation.

[0075] In the track construction stage, the lower girder (30), beam support pile (20), and group pile (10) are removed from the temporary section (A), and a new track (ET) connected to the maintenance track (KT) is constructed in the temporary section (A). It is preferable that the track construction stage be carried out separately according to the additional construction plan after the installation of the lower girder (30) is completed.

[0076] The track new construction step includes a girder demolition step (S7) in which the lower girder (30) and the beam support pile (20) are demolished in the construction section (A), as illustrated in FIGS. 12 and 13, and a track restoration step (S8) in which the new track (ET) is newly constructed in the construction section (A), and may further include a pile demolition step (S9) in which the group pile (10) is demolished. For example, the track restoration step (S8) may be performed prior to the girder demolition step (S7) or after the girder demolition step (S7), and new sleepers may be placed while supplementing the new gravel (G) after the girder demolition step (S7), and new rails (ER) may be installed on the new sleepers, thereby installing the new rails (ER) on the gravel bed. As another example, the track restoration stage (S8) may be followed by the girder demolition stage (S7), after which a concrete track is installed in the temporary section (A), and a new rail (ER) may be installed on the concrete track.

[0077] The girder demolition stage (S7) and the track restoration stage (S8) are carried out during nighttime hours when there is no train operation, and the pile demolition stage (S9) can be carried out regardless of train operation.

[0078] The track construction step may further include a culvert installation step (S6) in which the culvert unit (70) is installed on the lower side of the lower girder (30) so that the girder demolition step (S7) is performed according to the installation of the lower girder unit (70), as illustrated in Fig. 11. It is preferable that the culvert installation step (S6) be performed separately according to an additional construction plan before the girder demolition step (S7) after the installation of the lower girder (30) is completed.

[0079] The culvert installation step (S6) includes a culvert excavation step (S61) in which the roadbed (B) is removed from the temporary section (A) in response to the installation location of the culvert unit (70), and a culvert construction step (S62) in which the culvert unit (70) is installed on the lower side of the lower girder (30), and may further include a backfilling step (S63) in which the roadbed (B) is restored so that the culvert unit (70) is buried in the temporary section (A).

[0080] The culvert installation step (S6) may further include a gravel laying step (S64) in which new gravel (G) is installed on the restored roadbed (B). Since the gravel laying step (S64) is performed before the girder removal step (S7), the laying of new gravel (G) can be simplified.

[0081] By going through the culvert installation stage (S6), the crossroad (CR) and the culvert unit (70) are connected to enable vehicles and pedestrians to pass under the temporary track or new track (ET).

[0082] Accordingly, when a new track (ET) is newly installed on the upper side of the culvert unit (70), the cover depth (h), which is the height from the upper part of the culvert unit (70) to the upper part of the new rail (ER) included in the new track (ET), can be minimized to 600 mm, as shown in FIG. 14.

[0083] A method for constructing a railway subgrade girder bridge according to one embodiment of the present invention may further include a site preparation step (S10) in which the area around a new track (ET) is prepared as the new track (ET) is installed. The site preparation step (S10) may include backfilling and compacting operations on the roadbed (B).

[0084] According to the construction method of a railway halo-pan girder bridge and the railway halo-pan girder bridge structure according to the present invention, there is no need to block a train, construction costs for track restoration are reduced, and the cover height (h) for installing a culvert unit (70) can be minimized.

[0085] In particular, the demolition of the demolition track (DT), the installation of the beam support pile (20), and the installation of the underpass girder (30) are carried out during the nighttime hours of 3 to 5 hours when there is no train operation, so there is no need to block the train. In addition, since the modular underpass girder (30) is used, the construction cost for track restoration can be reduced, and the topsoil height (h) for the installation of the culvert unit (70) can be minimized. In addition, there are no restrictions on the train operation speed and the number of train operations, and it has excellent versatility, so it can overcome the operation height of the train between the upper and lower lines or the inclined operation of the train.

[0086] In addition, the driving of the group pile (10) can be performed regardless of the passage of the train. In addition, the strength of the group pile (10) is strengthened through the joint relationship of the group pile (10), and the movement of the unit pile (11) in the roadbed (B) is prevented, while the jointing of the unit pile (11), the pile restraint ring (12), and the joint plate (13) can be easily performed. In addition, the bearing capacity can be secured in various soil conditions of the roadbed (B).

[0087] In addition, the connection between the unit pile (11) and the pile restraint ring (12) can be made simple and strong through the connection relationship of the pile home (PE).

[0088] In addition, the construction of a railway halo girder bridge can be simplified by using a modularized halo girder (30). In addition, the strength of the transverse beam (31) can be strengthened through the detailed connection relationship of the halo girder (30), and the sagging of the girder rail (40) in the halo girder (30) can be prevented. In addition, since the halo girder (30) includes an inclined extension member (312), the noise generated when a train passes through the halo girder (30) can be reduced, and the halo girder (30) can be stabilized.

[0089] In addition, the bonding strength of the beam support pile (20) and the lower girder (30) can be improved through the bonding relationship of the joint floor plate (34), and the lower girder (30) can be fixed in place on the beam support pile (20). In addition, the strength of the longitudinal beam (32) can be strengthened through the bonding relationship of the girder reinforcing member (35), and the sagging of the lower girder (30) can be prevented. In addition, the girder rail (40) can be easily bonded to the lower girder (30) through the bonding relationship of the rail fastening member (36), and noise and vibration can be reduced by 70 to 80% or more through the vibration-proof function. In addition, the transportation of the lower girder (30) can be facilitated through the bonding relationship of the lifting hook (37). In addition, after the lower girder (30) is installed, the movement of workers can be facilitated through the bonding relationship of the bridge sidewalk (38), and the workers can be prevented from interfering with the train. In addition, through the joint relationship of the girder adjustment member, at least one of the installation height of the lower girder (30) and the inclination of the lower girder (30) can be easily adjusted on the beam support pile (20), and the connection between the maintenance track (KT) and the temporary track can be stabilized. In addition, through the joint relationship of the fastening adjustment member, at least one of the installation height of the girder rail (40) and the inclination of the girder rail (40) can be easily adjusted on the lower girder (30), and the connection between the maintenance track (KT) and the temporary track can be stabilized. In addition, when the lower girder (30) and the girder rail (40) implement a curved section of the track, instability of the train due to centrifugal force can be prevented, and the operation of the train can be made smooth.

[0090] In addition, along with the demolition of the demolition track (DT), the installation of the beam support pile (20) can be stabilized by leveling the roadbed (B) in the temporary section (A).

[0091] In addition, the connection between the maintenance track (KT) and the temporary track can be easily connected through the joint relationship of the girder rail (40), thereby facilitating train operation. In addition, the maintenance track (KT) and the new track (ET) can be easily connected, thereby facilitating train operation. In addition, the removal of the temporary track and the construction of the new track (ET) are simplified, and the construction of the new track (ET) does not require stopping the train.

[0092] In addition, the removal of the temporary track and the construction of the new track (ET) are clearly established through the coupling relationship of the new track construction stage, and the new track (ET) can be easily installed in the temporary section (A).

[0093] In addition, according to the culvert installation stage (S6), a culvert unit (70) can be easily installed on the lower side of the new track (ET), and the construction of a cross-road (CR) crossing the new track (ET) can be facilitated. In addition, it is advantageous in maintaining the linearity of the cross-road (CR) compared to existing construction methods.

[0094] In addition, the culvert unit (70) can be fixed in position on the roadbed (B) of the temporary section (A) according to the coupling relationship of the culvert installation step (S6).

[0095] In addition, since new gravel (G) is installed on the roadbed (B), the supply of new gravel (G) for new track (ET) is facilitated, the time and cost required for constructing new track (ET) are reduced, and the new track (ET) can be easily constructed at night.

[0096] Furthermore, it can be applied to all types of tracks, including single-track and double-track, and can be used for both straight and curved sections. Furthermore, it minimizes the construction period required for temporary track installation, offering excellent cost-effectiveness. Furthermore, it facilitates waterproofing and ensures excellent quality for temporary tracks, new tracks (ET), and culvert units (70).

[0097] Although the preferred embodiments of the present invention have been described with reference to the drawings as described above, those skilled in the art can modify or change the present invention in various ways without departing from the spirit and scope of the present invention as set forth in the claims below.

Claims

1. The demolition stage of the section where the demolition track included in the temporary section of the maintenance track through which the train passes is demolished; A pile installation step in which a plurality of beam support piles formed long along the transverse direction of the above-mentioned maintenance track are arranged at a distance from each other along the longitudinal direction of the above-mentioned maintenance track in the above-mentioned construction section, and both ends of the beam support piles are connected to group piles driven into the roadbed; and A girder installation step in which a halogirder formed long along the longitudinal direction of the above-mentioned maintenance track is laminated and connected to the beam support pile so that the halogirder is connected to the beam support pile along the longitudinal direction of the above-mentioned maintenance track in the above-mentioned construction section; The above Harogirder, A plurality of transverse beams formed long along the transverse direction of the above-mentioned maintenance track and spaced apart from each other along the longitudinal direction of the above-mentioned maintenance track; A pair of longitudinal beams formed long along the longitudinal direction of the above-mentioned maintenance track so that both ends of the above-mentioned transverse beams are joined, and laminated and joined to the above-mentioned beam support pile; A connecting member connecting both ends of the above transverse beam to a pair of longitudinal beams; and A method for constructing a railway halo girder bridge, characterized in that it includes a sleeper connecting member that is formed long along the longitudinal direction of the above-mentioned maintenance track and connects a plurality of transverse beams between a pair of longitudinal beams.

2. In paragraph 1, In the above girder installation step, A method for constructing a railway haro-panel bridge, characterized in that it includes a girder adjustment step for adjusting at least one of the installation height of the haro-girder and the inclination of the haro-girder based on the beam support pile.

3. In paragraph 1, A pile driving step in which a plurality of group piles are driven into the roadbed along the longitudinal direction of the maintenance track on both sides of the demolition track; A rail installation step in which a girder rail connected to a maintenance rail included in the above maintenance track is installed on the haro girder, or a girder rail already installed on the haro girder is connected to a maintenance rail included in the above maintenance track; and A track construction step in which the halogirder, the beam support pile, and the group pile are demolished in the above-mentioned construction section, and a new track connected to the maintenance track is constructed in the above-mentioned construction section; A method for constructing a railway halo-pan girder bridge, characterized in that it further includes at least one of the following.

4. In paragraph 3, The above file navigation step is, A unit driving step in which the unit files are driven into the roadbed so that multiple unit files can be in close contact with each other in the vertical and horizontal directions in response to the installation location of the group file; A pile restraint step in which a pile restraint ring wraps and restrains a plurality of unit piles driven into the roadbed; and A method for constructing a railway subgrade girder bridge, characterized in that it includes a judgment step in which a connecting plate is connected to the pile restraining ring at the upper end of a plurality of unit piles driven into the subgrade.

5. In paragraph 4, The above file navigation step is, A method for constructing a railway lower plate girder bridge, characterized in that it further includes a pile excavation step in which a pile home is formed in the roadbed corresponding to the installation location of the group pile.

6. In paragraph 3, In the above rail installation step, A method for constructing a railway haro-panel bridge, characterized in that it includes a rail adjustment step in which at least one of the installation height of the girder rail and the inclination of the girder rail is adjusted based on the haro-panel girder.

7. In paragraph 3, The above orbital construction stage is, A girder demolition step in which the halogirder and the beam support pile are demolished in the above-mentioned hypothetical section; and A method for constructing a railway lower girder bridge, characterized in that it includes a track restoration step in which the new track is newly constructed in the above-mentioned temporary section.

8. In paragraph 7, The above orbital construction stage is, A method for constructing a railway halo girder bridge, characterized in that it further includes a culvert installation step in which the culvert unit is installed on the lower side of the halo girder so that the girder demolition step is performed according to the installation of the culvert unit.

9. In paragraph 8, The above culvert installation steps are: A gutter excavation step in which the subgrade is removed from the temporary section corresponding to the installation location of the gutter unit; and A method for constructing a railway halo girder bridge, characterized in that it includes a culvert construction step in which the culvert unit is installed on the lower side of the halo girder.

10. A plurality of group piles driven into the roadbed along the longitudinal direction of the maintenance track on both sides of the demolition track included in the temporary section of the maintenance track through which the train passes; A plurality of beam support piles formed long along the transverse direction of the maintenance track so as to be spaced apart from each other along the longitudinal direction of the maintenance track in the above-mentioned hypothetical section, and each end of which is connected to the group pile; and In the above-mentioned hypothetical section, a halogirder is formed long along the longitudinal direction of the maintenance track so as to be coupled to the beam support pile along the longitudinal direction of the maintenance track, and is laminated and coupled to the beam support pile; The above Harogirder, A plurality of transverse beams formed long along the transverse direction of the above-mentioned maintenance track and spaced apart from each other along the longitudinal direction of the above-mentioned maintenance track; A pair of longitudinal beams formed long along the longitudinal direction of the above-mentioned maintenance track so that both ends of the above-mentioned transverse beams are joined, and laminated and joined to the above-mentioned beam support pile; A connecting member connecting both ends of the above transverse beam to a pair of longitudinal beams; and A railway halo plate girder bridge structure characterized by including a sleeper connecting member formed long along the longitudinal direction of the above-mentioned maintenance track and connecting a plurality of transverse beams between a pair of longitudinal beams.

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