KR102138365B1 - Non-ballast track structure for allowing longitudinal direction slip of steel railway bridge - Google Patents

Abstract

When constructing a non-conductive steel footbridge using a steel member such as a girder, a vertical beam, or a vertical beam, the steel footbridge according to the temperature change by allowing the slips connected to the steel member to slide in the longitudinal direction of the bridge or the longitudinal direction of the track The ball can easily accommodate the expansion and contraction of the ball, and when constructing a ball-free steel bridge using steel members, allow longitudinal slip, but reinforce the stiffness in the lateral and vertical directions. The construction of the upper track makes it possible to safely and easily install the long rail, and accordingly, there is provided a ball-free track structure for steel footbridges that allows longitudinal slip, which makes it possible to speed up trains.

Description

Non-ball track structure for steel footbridge that allows longitudinal slip {NON-BALLAST TRACK STRUCTURE FOR ALLOWING LONGITUDINAL DIRECTION SLIP OF STEEL RAILWAY BRIDGE}

The present invention relates to an unguided orbit of a steel bridge, and more specifically, to construct an unguided steel bridge using a steel member such as a girder, stringer, and longitudinal beam. When it is done, it relates to a non-ballast track structure that allows a longitudinal slip corresponding to a temperature change of a steel bridge to enable the installation of a continuous welded rail.

In general, a ballless bridge includes a pair of rails installed in parallel in the longitudinal direction; Sleepers installed in a width direction at regular intervals to support the rail; A girder made of steel supported in the longitudinal direction at the bottom of the sleeper; And a bridge support located at the top of the shift or bridge to support the girder, and a bridge that does not have a filling gravel to support the rails and sleepers.

In addition, the induction bridge is a pair of rails installed in parallel in the longitudinal direction; Sleepers installed in a width direction at regular intervals to support the rail; And a shock absorber filling gravel filling the lower and side surfaces of the sleeper, while preventing the loss of the filling gravel, and at the same time, when operating the train, the slab and the girder are installed under the sleeper to maintain structural stability by its own weight. It is made of a bridge support located at the top of a bridge or a bridge to support a slab and a girder, and it is a bridge with a filling gravel supporting rails and sleepers.

On the other hand, Figure 1 is a view showing a flat ball-shaped bridge according to the prior art.

In the railway bridge according to the prior art, about 50% is a non-conventional plate-shaped bridge that is constructed as a steel bridge and is mostly installed as a non-ballast. As shown in Figure 1, such a ball-shaped bridge 10 is installed on a girder on the alternating and pier, sleepers are installed at regular intervals on the girder, a pair of rails are installed on the sleepers do. However, such a ball-shaped bridge has a disadvantage in that it is vulnerable in terms of durability or structural aspect.

Specifically, in the unconventional plate-shaped bridge 10 according to the prior art, when the train load is repeatedly applied, the sleeper is struck by the repeated load at the contact surface of the sleeper and the rail or the contact surface of the girder and the sleeper, and this phenomenon As this progresses, the running noise of the train is severely generated. As a result, the train running stability is deteriorated if repairs such as sleeper ganging and girder ganging are not performed, and vibration and the like are increased to deteriorate the durability of the bridge. In addition, repairing such a ball-shaped bridge 10 is a temporary method and needs to be improved in a long-term aspect.

In addition, in the case of most steel bridges such as plate girder bridges and truss bridges, there is no gravel layer, and the track structure, which is the connecting structure of the rails and sleepers, is directly connected to the girder, stringer, or vertical beam of the bridge by sleepers. Phosphorus-free orbit is applied.

2A is a cross-sectional view showing an unguided track, and FIG. 2B is a cross-sectional view showing a gravel track as a guided track.

In the unguided track 20 according to the prior art, as shown in FIG. 2A, a crossing device is installed on an upper part of a lower structure composed of alternating or piers, and the girders 21 are longitudinally disposed on the crossing device. It is installed, and the sleepers 23 are installed in the width direction at regular intervals on the girders 21, and a pair of rails 24 are installed on the sleepers 23 in parallel in the longitudinal direction of the girders 21. In this case, the sleeper 23 is fixed to the girder 21 by the sleeper fixing device 22.

In addition, the gravel track 30 according to the prior art, as shown in Figure 2b, includes a girder 31, deck 32, sleepers 33 and rails 34, at this time, sleepers 33 ) Filling gravel (35) is filled in the lower and side surfaces.

However, in the case of the ball track 20 according to the related art, as the train passes through the rail 24, a very large dynamic load is generated, so that the rail 24 and the sleepers 23 and the girder 21 are in contact. The continuous vibration load is intensified and a gap is generated in the sleeper 23, and as the gap is intensified, the driving noise of the train is severely generated. As a result, the rail is not repaired when the sleeper 23 and the girder 21 are not repaired. (24) Sit down on the sleepers (23), leading to a dangerous situation where trains derail.

In addition, in the case of the unguided track 20, it is not possible to lay a continuous rail due to various constraints due to the track-bridge interaction, for example, an additional rail stress. It is not possible to increase the driving speed of the car, and it also has an environmental effect that noise and vibration are generated. Here, the long rail refers to a rail having a length of several kilometers by connecting a long rail of 20 to 30m by welding.

In addition, the maintenance work of the unguided track is only a temporary measure, and the necessity of permanent induction image construction, such as an island structure installed on a general ground, has been raised. However, the train has a problem in that, except for a specific time zone, there is no special measure to change a ballistic railway bridge into a guided railway bridge in a state in which the passage of the train is blocked.

On the other hand, in order to solve the above-mentioned problems, various methods of substituting a ballistic railway bridge with a guided railway bridge have been proposed.

3 is a view illustrating the replacement of a non-conducting railway bridge according to the prior art with an induction railway bridge, and shows that a non-conducting railway bridge is replaced with an induction railway bridge by pouring slab concrete on the existing girder 43.

Referring to Figure 3, the construction method of replacing the unconventional railway bridge according to the prior art to the induction railway bridge, a) girder (43) grinding the base surface to improve the adhesion of the concrete step; b) perforation step of drilling a hole for reinforcement in the girder (43); c) reinforcing the reinforcing bar 46a through the perforated hole and installing a slab formwork 46; d) steps such as flattening the ground below the bridge and demolition of obstacles, and supporting and installing the copper support 47; e) pouring concrete 48a into the slab formwork 46; f) cutting the girder protrusion exposed to the top of the slab 48 after demolding the support 47 and the formwork 46 after curing; g) waterproofing of the slab 48; And h) placing gravel 49 on the slab 48 to induce imaging.

However, in the case of the construction method of replacing the non-conducting railway bridge according to the prior art with an induction railway bridge, the train runs on the rail 41 even during the pouring and curing of the slab 48, so that the slab is caused by vibration caused by the passage of the train. It is an unreasonable method inevitably causing problems in structural rigidity due to cracking and material separation in (48). In addition, the adhesion between the girder and the concrete can be reduced by vibration caused by the train operation, and the weight is relatively high compared to sand, cement, etc. among the concrete poured into the formwork due to the vibration load as the train is operated during the induction painting construction. Large pebbles may be concentrated toward the bottom of the cured slab due to being biased toward the bottom of the formwork, and also, rainwater, etc. may penetrate into the upper part of the existing girder to be cut, thereby oxidizing the girder to accelerate corrosion. There is a problem that cracks may be generated in the slab cured by pouring concrete by expanding the volume.

As described above, as a method for overcoming the drawbacks of the unguided orbit and lengthening the rail, there are several methods of replacing the unguided orbit with the guided orbit (gravel orbit), but there are many costs and bridges for additional dead loads. There are many constraints on securing load bearing capacity and short construction time on a running bridge. For example, when constructing an unconducted steel bridge using a steel member such as a girder, stringer, or longitudinal beam, expansion and contraction of the steel bridge due to temperature changes Since it is difficult to cope with, it is impossible to install a long rail, and accordingly, there is a problem that it is difficult to speed up a train. That is, there is a problem in that the installation of the long rail is not easy because a longitudinal slip is not allowed between the steel member and the sleeper.

Republic of Korea Patent No. 10-1160187 (application date: December 7, 2011), the name of the invention: "Precast integrated track girder for railway bridges and its manufacturing and construction method" Republic of Korea Patent No. 10-891961 (application date: August 6, 2008), the name of the invention: "A bridge replacement method for inducing old bridges or unconventional bridges of roads or railroads using a temporary structure and its Device" Republic of Korea Patent No. 10-775053 (application date: April 23, 2007), the name of the invention: "In-place pouring concrete induction method using existing steel bridge girder and its structure" Republic of Korea Patent No. 10-556219 (application date: May 14, 2004), the name of the invention: "Replacement of the superstructure of the railway bridge and induction imaging method using the same" Republic of Korea Patent No. 10-454405 (application date: July 5, 2002), the name of the invention: "The method of induction imaging by replacing the steel bridge of a railway bridge with a concrete bridge"

Technical problem to be achieved by the present invention for solving the above-mentioned problems is, when constructing a non-conductive steel footbridge using a steel member such as a girder, a vertical beam, or a vertical beam, the lumber ties connected to the steel member are in the longitudinal direction of the bridge or The present invention is to provide a non-orbiting structure for a steel bridge that allows longitudinal slip, which can easily accommodate a non-orbiting orbit of expansion and contraction of a steel bridge due to temperature changes by allowing slip slipping in the longitudinal direction of the track. .

Another technical problem to be achieved by the present invention, when constructing a non-conductive steel bridge using a steel member, allows longitudinal slip, but constructs a non-conventional orbit that reinforces rigidity in the lateral and vertical directions. It is intended to provide a ballast structure for steel footbridge that allows longitudinal slip, which can be safely and easily installed.

As a means for achieving the above-described technical problem, a non-conductive orbital structure for steel footbridge that allows longitudinal slip according to the present invention is to place a sleeper on a steel member such as a girder/verbo/longitudinal beam, and the sleeper. It is connected by a sleeper fixing device, and is a ballless track structure that installs a rail fastening device and a rail on the sleeper, and is disposed on the upper flange and the lower part of the sleeper on both sides of the sleeper to support the sleeper while supporting the sleeper. Sleeper pads to adjust the height; A low friction plate installed between the sleeper and the sleeper pad on both sides of the sleeper to allow longitudinal sleep of the sleeper; C-beams are installed to surround the low friction plate on both sides of the sleeper; And an elastic fixing plate that is fastened to the lower part of the sleeper to provide stiffness in the lateral and vertical directions so that the sleeper and the upper flange of the steel member are connected, but provides a smooth slip between the sleeper surface and the upper flange of the steel member. In order to provide a groove on the lower surface of the sleeper, the c-beam, low friction plate and sleeper pads are respectively installed in the groove; It characterized in that the elastic fixing plate is provided with a gap adjustment plastic for maintaining a gap of 1 to 2 mm according to the lower state of the upper flange of the steel member.

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Here, the low friction plate is preferably formed of a plate having a low coefficient of friction to allow longitudinal slip of the sleeper.

Here, the elastic fixing plate may be fastened in the form of a bolt by a sleeper fixing device on the upper side of the sleeper.

According to the present invention, when constructing a non-conductive steel bridge using a steel member such as a girder, a stringer, or a vertical beam, the temperature by allowing the slips connected to the steel member to slip in the longitudinal direction of the bridge or the longitudinal direction of the track The expansion and contraction of the steel footbridge according to the change can easily accommodate the unguided orbit.

According to the present invention, when constructing a non-conductive steel bridge using a steel member, longitudinal slip is allowed, but by constructing a non-conventional orbit that reinforces stiffness in the lateral and vertical directions, the pole rail is safely and easily installed. It can thereby speed up the train.

1 is a view showing a non-conductive plate-shaped bridge according to the prior art.
2A is a cross-sectional view showing an unguided track, and FIG. 2B is a cross-sectional view showing a gravel track as a guided track.
3 is a view illustrating the replacement of a non-phase railway bridge according to the prior art with a guided railway bridge.
4 is a view schematically showing an unconventional steel footbridge to which an unconventional orbital structure allowing longitudinal slip is applied according to an embodiment of the present invention.
FIG. 5 is a view showing an unguided orbital structure for steel footbridge allowing longitudinal slip according to a first embodiment of the present invention.
FIG. 6 is a cross-sectional view showing the unguided orbital structure shown in FIG. 5.
FIG. 7 is a bottom view showing the unguided orbit structure shown in FIG. 5.
FIG. 8 is a specific cross-sectional view showing the unguided orbital structure shown in FIG. 5.
FIG. 9 is a view showing an unguided orbital structure for steel footbridge allowing longitudinal slip according to a second embodiment of the present invention.
FIG. 10 is a cross-sectional view showing the unguided orbital structure shown in FIG. 9.
FIG. 11 is a bottom view showing the unguided orbit structure shown in FIG. 9.
FIG. 12 is a view showing an unguided orbital structure for steel footbridge allowing longitudinal slip according to a third embodiment of the present invention.
FIG. 13 is a view specifically showing region A shown in FIG. 12.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains may easily practice. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. In addition, in order to clearly describe the present invention in the drawings, parts irrelevant to the description are omitted, and like reference numerals are assigned to similar parts throughout the specification.

Throughout the specification, when a part “includes” a certain component, it means that the component may further include other components, not to exclude other components, unless otherwise stated.

[First embodiment: Steel ballast free track structure (100a) allowing longitudinal slip]

4 is a view schematically showing an unconventional steel bridge to which an unconventional orbital structure allowing a longitudinal slip according to an embodiment of the present invention is applied, and FIG. 5 is a longitudinal slip according to the first embodiment of the present invention. It is a drawing showing the allowable orbital structure for steel bridges.

Referring to FIG. 4, when constructing an unconventional steel bridge to which an unconventional orbital structure 100 to which longitudinal slip is permitted according to an embodiment of the present invention is applied, a steel member 110 such as a girder, a longitudinal beam, or a vertical beam By allowing slips (sliding) in which the lumber sleepers connected to the bridge slip in the longitudinal direction or the longitudinal direction of the bridge, the unconventional orbit 100 must be able to easily accommodate the expansion and contraction of steel bridges due to temperature changes.

Since the unguided track 100 structure allowing such longitudinal slip is a structure that is vulnerable in the transverse or trajectory of the bridge, it should provide sufficient stiffness in the transverse direction, and also sufficient stiffness in the vertical direction.

First, as shown in FIG. 5, the non-orbital structure 100a for steel footbridge that allows longitudinal slip according to the first embodiment of the present invention is transverse and perpendicular to the non-orbital orbit that allows longitudinal slip. In order to provide directional stiffness, it is a method of connecting the steel member 110 of the sleeper 120 and the girder/verbo/vertical beam with an angle brace 230.

Referring to FIG. 5, a non-conduction trajectory structure 100a for steel footbridge allowing longitudinal slip according to a first embodiment of the present invention is a sleeper on a steel member 110 such as a girder/verbo/longitudinal beam ( 120) is arranged, connecting the sleeper 120 to the sleeper fixing device 130, and installing a rail fastening device 140 and the rail 150 on the sleeper 120 as a ballless track, sleeper pads (210), low friction plate 220, c-shaped steel 240, angle-shaped brace 230, c-shaped steel 240 and the connecting plate 250.

The sleeper pad 210 is disposed under the upper flange of the steel member 110 and the sleeper 120. At this time, the sleeper pad 210 is installed on the upper flange of the steel member 110 so that the sleeper 120 is stably disposed.

The low friction plate 220 is installed between the sleeper 120 and the sleeper pad 210 on both sides of the sleeper 120, and is also disposed under the sleeper 120 at the center of the sleeper 120. At this time, the low friction plate 220 is formed of a plate having a low coefficient of friction to allow longitudinal slip of the sleeper 120.

C-shaped steel 240 is installed in the lower portion of the low friction plate 220 from the center of the sleeper 120, and connects the sleeper 120 and the top of the angled brace 230.

The angled brace 230 is installed obliquely between the lower flange of the steel member 110 and the c-shaped steel 240. That is, the angle brace 230 connects the sleeper 120 and the steel member 110 to provide lateral and vertical stiffness of the unguided track that allows longitudinal slip.

A connection plate (Gusset Plate 250) is installed at the lower end of the steel member 110 to weld-connect the angle brace 230 to the steel member 110.

The steel ball-free ball trajectory structure 100a that allows longitudinal slipping according to the first embodiment of the present invention is formed with a groove g in the sleeper 120 in advance to form an upper flange of the steel member 110. Between the sleeper pad 210 and the low friction plate 220 is installed to ensure proper elasticity and smooth slip in the longitudinal direction. In addition, the connection between the sleeper 120 and the upper flange of the steel member 110 uses the sleeper fixing device 130 to provide only rigidity in the vertical direction of the bridge.

On the other hand, Figure 6 is a cross-sectional view showing a non-orbital structure shown in Figure 5, Figure 7 is a bottom view showing a non-orbital structure shown in Figure 5, Figure 8 is a non-orbital structure shown in Figure 5 It is a specific cross-sectional view.

In a non-orbital orbital structure (100a) for steel footbridge that allows longitudinal slip according to the first embodiment of the present invention, as shown in FIG. 6, the upper part of the steel member 110 on which the sleepers 120 are disposed When the flange is produced by tightening two or more plates with rivets or bolts 270, the sleeper 120 does not slide smoothly from the upper flange of the steel member 110, so the size of the head of the rivet or bolt 270 Install the additional cover plate 260 having a hole (h) suitable for, and place the sleeper 120, the sleeper pad 210 and the low friction plate 220 is installed on the top. At this time, the upper cover of the additional cover plate 260 and the steel member 110 can be firmly attached by applying welding or the like.

In addition, the angle-shaped brace 230 for providing lateral and vertical stiffness is connected to the connecting plate 250 installed at the lower end of the steel member 110 by bolts or welding.

In addition, in the non-orbiting structure 100a for steel footbridge that allows longitudinal slip according to the first embodiment of the present invention, as shown in FIG. 7, an angled brace for providing lateral and vertical stiffness ( One end of 230) is connected to the c-beam (240) located in the center of the sleeper (120) by bolts or welding.

At this time, the low friction plate 220 is located in the center of the sleeper 120 to allow slip in the longitudinal direction c-beams 240, as shown in Figures 7 and 8, the low friction plate 220 ) And a long hole (Slot Hole: 280) and a screw (Screw Spike: 290) is connected to the sleeper 120.

In the steel ball-free ball track structure 100a that allows longitudinal slip according to the first embodiment of the present invention, the low friction plate 220 allows longitudinal slip, wherein the angle brace 230 is It provides lateral and vertical stiffness, and the sleeper fixing device 130 can connect the sleeper 120 and the upper flange of the steel member 110 to provide stiffness in the bridge vertical direction. Accordingly, the steel ball-free ball track structure (100a) that allows longitudinal slip according to the first embodiment of the present invention is a sleeper to provide lateral and vertical stiffness of the ball track that allows longitudinal slip. As a method of connecting the steel member 110 of the girder/verbo/vertical beam with the angle brace 230, the long rail can be installed, and the train can be accelerated.

[Second embodiment: Steel ball bridge free track system (100b) allowing longitudinal slip]

9 is a view showing a non-orbital structure for steel bridges that allows longitudinal slip according to a second embodiment of the present invention, FIG. 10 is a cross-sectional view showing the non-orbital structure shown in FIG. 9, and FIG. It is the bottom view which shows the unguided orbit structure shown in FIG.

As shown in FIG. 9, the ball-free orbital structure 100b for steel footbridge that permits longitudinal slip according to the second embodiment of the present invention is to provide lateral and vertical stiffness of a track that allows slip. It is a method of installing an additional C-shaped steel 300 between the sleepers 120 and the sleepers 120, and connecting them to the steel member 110 of the girder/verbo/longitudinal beam and the angle brace 230.

Referring to Figures 9 and 10, the steel ball-free ball track structure (100b) for allowing longitudinal slip in accordance with a second embodiment of the present invention, the steel member 110, such as girder / vertical / vertical beam On the sleeper 120, as a ball track that connects the sleeper 120 to the sleeper fixing device 130, and installs the rail fastening device 140 and the rail 150 on the sleeper 120. , Sleeper pad 210, low friction plate 220, U-beam 240, angle brace 230, U-beam 240, connecting plate 250, additional U-beam 300 and sleeper cover U-beam ( 320).

The sleeper pad 210 is disposed on the upper flange of the steel member 110 and the sleeper 120 on both sides of the sleeper 120.

The low friction plate 220 is disposed under the sleeper 120 at the center of the sleeper 120. At this time, the low friction plate 220 is formed of a plate having a low coefficient of friction to allow longitudinal slip of the sleeper 120.

C-shaped steel 240 is installed in the lower portion of the low friction plate 220 from the center of the additional C-shaped steel 300, to connect the upper and additional C-shaped steel 300 of the angled brace 230.

The angled brace 230 is installed obliquely between the lower flange of the steel member 110 and the c-shaped steel 240. That is, the angled brace 230 connects the additional C-shaped steel 300 and the steel member 110 to provide lateral and vertical stiffness of the unguided orbit allowing longitudinal slip.

The connecting plate 250 is installed at the lower end of the steel member 110 to weldably connect the angle brace 230 to the steel member 110.

Covers C-beams 320 for sleepers, as shown in Figure 10, are respectively arranged to surround the sleepers 120.

The additional U-shaped steel 300 is installed between the sleepers 120 and the sleepers 120 to provide lateral and vertical stiffness, as shown in FIG. 10, and the U-beams surrounding the sleepers 120, respectively Type sleeper cover c-beams are installed between the 320, the sleeper cover c-beams 320 can be firmly connected by a slot bolt 310 or welding. At this time, the cover for the sleepers surrounding the sleeper 120, the c-beam 320 and the upper part of the sleeper 120 are firmly connected with screws 330 or the like.

A steel ball-free ball track structure (100b) that allows longitudinal slip according to the second embodiment of the present invention is a sleeper (to provide a smooth slip between the lower side of the sleeper 120 and the upper flange of the steel member 110) 120) The sleeper pad 210 and the low friction plate 220 are installed on the lower surface.

In addition, as shown in FIG. 11, the angled brace 230 for providing lateral and vertical stiffness is connected to the connecting plate 250 installed at the lower end of the steel member 110 by bolts or welding.

In addition, as shown in FIG. 11, one side of the angled brace 230 for providing lateral and vertical stiffness is connected to the c-shaped steel 240 located in the center of the additional c-shaped steel 300 by bolts or welding. do.

In addition, the c-shaped steel 240 located at the center of the additional c-shaped steel 300 is additionally connected to the low friction plate 220 and the long hole 280 and the screw 290 to provide slip in the longitudinal direction.

In the steel ballast free trajectory structure 100b that allows longitudinal slip according to the second embodiment of the present invention, the low friction plate 220 allows longitudinal slip, wherein the angled brace 230 is It can provide lateral and vertical stiffness. Accordingly, the steel ball-free ball trajectory structure 100b allowing longitudinal slip according to the second embodiment of the present invention is provided with sleepers 120 to provide lateral and vertical stiffness of the track allowing slip. As a method of installing an additional U-shaped steel 300 between the sleepers 120 and connecting it to the steel member 110 and the angle-shaped brace 230, it is possible to install a long rail and speed up the train.

[3rd embodiment: Steel ball-free ball track structure (100c) allowing longitudinal slip]

FIG. 12 is a view showing an unguided orbital structure for steel footbridge allowing longitudinal slip according to a third embodiment of the present invention, and FIG. 13 is a view specifically showing region A shown in FIG. 12.

As shown in FIG. 12, the non-orbital structure 100c for steel footing that allows longitudinal slip according to the third embodiment of the present invention has lateral and vertical stiffness of the non-orbiting orbit that allows longitudinal slip. In order to provide a method to install the elastic fixing plate 340 on the sleeper 120.

12 and 13, a non-conduction trajectory structure 100c for steel footbridge allowing longitudinal slip according to a third embodiment of the present invention is provided on a steel member 110 such as a girder/vertical beam/vertical beam. On the sleeper 120, as a ball track that connects the sleeper 120 to the sleeper fixing device 130, and installs the rail fastening device 140 and the rail 150 on the sleeper 120. , Low friction plate 220, c-shaped steel 240, elastic fixing plate 340 and the gap adjustment plastic 350.

The sleeper pad 210 is disposed under the upper flange and sleeper 120 of the steel member 110 to adjust the height of the sleeper 120 while supporting the sleeper 120. At this time, the sleeper pad 210 is installed on the upper flange of the steel member 110 so that the sleeper 120 is stably disposed.

The low friction plate 220 is installed between the sleeper 120 and the sleeper pad 210 on both sides of the sleeper 120. At this time, the low friction plate 220 is formed of a plate having a low coefficient of friction to allow longitudinal slip of the sleeper 120.

C-shaped steel 240 is installed to surround the low friction plate 220 on both sides of the sleeper 120.

The elastic fixing plate 340 is fastened with the lower portion of the sleeper 120 to provide lateral and vertical stiffness of the unguided track that allows longitudinal slip, and at this time, the sleeper fixing device at the top of the sleeper 120 It is fastened in the form of a bolt by 130.

The steel ball-free ball track structure (100c) that allows longitudinal slip according to the third embodiment of the present invention is to provide a smooth slip between the lower side of the sleeper (120) and the upper flange of the steel member (110). A groove is formed on a lower surface of the sleeper 120, and a C-shaped steel 240, a low friction plate 220, and a sleeper pad 210 are respectively installed in the groove.

At this time, in order to provide stiffness in the lateral and vertical directions, an elastic fixing plate 340 is fastened to the sleeper 120 in the form of a bolt at the top of the sleeper 120, and the steel of the girder/verbo/longitudinal beam is also used. The member 110 may have a gap of about 1 to 2 mm from the lower portion of the upper flange.

At this time, as shown in FIG. 13, the elastic fixing plate 340 is provided with a gap adjusting plastic 350 for maintaining a gap of about 1 to 2 mm according to the lower state of the upper flange of the steel member 110. It is desirable to be.

The steel ball-free ball track structure 100c that allows longitudinal slip according to the third embodiment of the present invention, wherein the low friction plate 220 allows longitudinal slip, and at this time, the elastic fixing plate 340 is transverse. It can provide direction and vertical stiffness. Accordingly, the steel ball-free ball trajectory structure 100c allowing longitudinal slip according to the third embodiment of the present invention is provided on the sleeper 120 to provide lateral and vertical stiffness of the track allowing slip. As a method of connecting the elastic fixing plate 340, a long rail can be installed, and the speed of the train can be increased.

After all, according to an embodiment of the present invention, when constructing a non-conductive steel bridge using a steel member such as a girder, a vertical beam, or a vertical beam, the lumber sleepers connected to the steel member slide in the bridge longitudinal or track longitudinal direction. By allowing slip, it is possible to easily accommodate the expansion and contraction of the steel footbridge due to temperature change. In addition, when constructing a non-conductive steel bridge using a steel member, longitudinal slip is allowed, but by constructing a non-conventional orbit that reinforces stiffness in the lateral and vertical directions, the pole rail can be safely and easily installed, Accordingly, it is possible to speed up the train.

The above description of the present invention is for illustration only, and those skilled in the art to which the present invention pertains can understand that it can be easily modified to other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims rather than the above detailed description, and it should be interpreted that all changes or modified forms derived from the meaning and scope of the claims and equivalent concepts thereof are included in the scope of the present invention. do.

100, 100a, 10b, 100c: unguided orbit
110: Steel member (girder / vertical beam / vertical beam)
120: tie (Tie) 130: tie sleeper
140: rail fastener 150: rail
210: Tie Pad 220: Low Friction Plate
230: angle brace (Brace) 240: C-shaped steel
250: Gusset Plate 260: Additional cover plate
270: rivet/bolt 280: slot hole
290: Screw Spike
300: additional U-beam 310: slot bolt
320: sleeper cover c-beam 330: screw
340: elastic fixing plate 350: gap adjustment plastic

Claims (5)

A sleeper 120 is disposed on a steel member 110 such as a girder/vertical beam/vertical beam, the sleeper 120 is connected to a sleeper fixing device 130, and a rail fastening device ( 140) and rails (150) as a ball track structure to install,
A sleeper pad 210 disposed at an upper flange and a sleeper 120 of the steel member 110 at both sides of the sleeper 120 to adjust the height of the sleeper 120 while supporting the sleeper 120;
A low friction plate 220 installed between the sleeper 120 and the sleeper pad 210 on both sides of the sleeper 120 to allow longitudinal slipping of the sleeper 120;
C-beams 240 are installed to surround the low friction plate 220 on both sides of the sleeper 120; And
The sleeper 120 and the upper flange of the steel member 110 is connected to the lower portion of the sleeper 120 and includes an elastic fixing plate 340 to provide lateral and vertical stiffness,
In order to provide a smooth slip between the lower surface of the sleeper 120 and the upper flange of the steel member 110, a groove is formed on the lower surface of the sleeper 120, and the c-shaped steel 240 and the low friction plate ( 220) and sleeper pads 210 are respectively installed; The elastic fixing plate 340 is provided with a gap adjustment plastic 350 for maintaining a gap of 1 to 2 mm according to the lower state of the upper flange of the steel member 110 to allow longitudinal slip Steel ballast free track structure. delete According to claim 1,
The low friction plate 220 is a ball-free structure for steel footbridge that allows longitudinal slip, characterized in that it is formed of a plate having a low coefficient of friction to allow longitudinal slip of the sleeper (120). delete According to claim 1,
The elastic fixing plate 340 is a ball-free structure for steel footbridge that allows longitudinal slip, characterized in that it is fastened in the form of a bolt by a sleeper fixing device 130 at an upper portion of the sleeper 120.

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