KR20190102404A - Sliding Resin Rail Fastening Track System with Shock Transmission Unit - Google Patents

Abstract

The present invention relates to a sliding resin fixing track structure which uses a sliding resin fixing track structure to reduce an axial force of a long rail of multi-span and long-span railroad bridges without an expansion joint device and prevent rail buckling when installing a long rail on a railroad bridge. The sliding resin fixing track structure comprises: a fixing groove container which is arranged on an upper portion of both sides of a concrete slab along an extension line of a rail, and has a U-shaped cross section; a rail groove container slidably inserted into the fixing groove container to be installed; a rail installed on a bottom of the rail groove container; and a resin body filled in a space between the rail and the rail groove container to fix the rail. The rail groove container, the rain, and the resin body are slid in an extension direction of the fixing groove container by a difference in thermal strain, and length deformation is possible.

Description

Sliding Resin Rail Fastening Track System with Shock Transmission Unit

The present invention relates to a railway track technology, using a sliding resin fixed track structure when installing a long rail in a railway bridge, sliding rail for reducing the long rail axial force and preventing rail buckling of the multi-span and long-span railway bridge without expansion joint device It's about structure.

Expansion joints of railway bridges are facilities that increase installation costs, maintenance costs, vibration noise, and track safety. Therefore, it is desirable to build railway bridges without expansion joints whenever possible. However, as the railway bridge becomes long span or multi span span, the bridge's interaction with the rail during the long rail construction increases the axial stress of the rail due to the bridge's behavior, which causes the buckling to be destroyed by buckling. It is causing a serious threat. Therefore, the design of railroad bridges requires a review of bridge-rail interaction and upward force. In this design process, rail buckling prevention measures such as expansion joints, ZLR and RLR are being established.

1 is a plan view of a stretch joint railway bridge according to the prior art. The shift 120 is installed between the bridge portion 100 and the roadbed portion 110. The rail 1 extends over the bridge part 100 and the roadbed part. If the existing railway bridge is long span, the installation of extension rails (130, REJ), ZLR and RLR in the alternating portion 120 or bridge portion 100 to reduce the axial force of the rail (1) to install a long rail limitedly have. Expansion joint 130 is known as a factor of frequent maintenance and safety accidents, and vibration and noise is also greatly increased where it is preferable not to install if possible. ZLR and RLR are also limited to the installation of long rails, so it is urgent to develop structures and construction methods that can be built without a long rail.

Accordingly, in recent years, construction has been made so that the inlaid slab can be slidable so that the behavior of the substructure is not transmitted to the rail. This is an in-situ slab sliding method that prevents the force of the lower motion from being transmitted to the rail and prevents the rail from buckling. However, this method is a structure that moves a heavy slab is difficult to employ in many ways and costly.

Republic of Korea Patent Application No. 20-2003-0025621 Republic of Korea Patent Application No. 10-2015-0158209

An object of the present invention for the above problem is to provide a method capable of implementing a non-stretch joint device that enables the sliding of the entire bridge. More specifically, the present invention is fixed to the lower girder, the inlet slab to allow the rail portion to slide to block the transmission of force of the lower structure due to temperature changes, and restrain the sliding rail against impact loads such as starting load of the vehicle It is an object of the present invention to provide a method for preventing the movement of the rail.

"형태로 된 고정홈통; 상기 고정홈통 내부에 슬라이딩 가능하게 끼워져 설치되는 레일홈통; 상기 레일홈통의 바닥에 설치되는 레일; 상기 레일과 레일홈통 사이의 공간에 충전되어 상기 레일을 고정하는 수지체;를 포함함으로써; For this purpose, the cross section along the extension line of the rail on both sides of the concrete slab is "

A rail groove provided to be slidably inserted into the fixed groove; a rail installed at a bottom of the rail groove; a resin body filling the space between the rail and the rail groove to fix the rail; By including;

The rail grooves, the rails and the resin body are slid along the extending direction of the fixed gutter by the difference in thermal strain, thereby achieving a sliding resin fixed orbit structure, characterized in that configured to be capable of length deformation.

According to another feature of the invention, the lubrication means may be further interposed between the fixing gutter and the rail gutter.

"의 형태로 되어 있음으로써, 상기 고정홈통의 상단을 가릴 수 있도록 되어 있다. According to another feature of the invention, the upper end of the rail trough is bent outward so that the cross section "

", It is possible to cover the upper end of the fixing gutter.

According to another feature of the invention, it is provided at one or more places along the extending direction of the rail, it may further include a damping means for suppressing the sudden length change of the rail.

According to another feature of the invention, the through hole provided in one or several bottom plate along the extension section of the fixing gutter; A seating groove provided in the concrete slab at the point where the through hole is provided; As installed in the seating groove, one end may further include a damper connected to the bottom of the rail groove and the other end fixed to the concrete slab.

According to another feature of the invention, the damper may be a shock transmission unit (STU) damper.

According to another feature of the present invention, both sides of the rail gutter is provided with a mound so that rain water does not accumulate in the rail gutter; The upper end of the side plate of the rail gutter may be provided with a long elongated loop to cover the mound.

According to the present invention, since there is no expansion joint, a rail structure is provided which ensures driving safety and can significantly reduce maintenance, vibration, and noise.

According to the present invention, there is provided a construction structure which can be applied to a resin fixed orbit structure capable of embedding the entire rail and supporting left and right and drawing resistance.

The rail structure according to the present invention makes it possible to prevent the rail buckling of the long span railway bridge as well as the multi span railway bridge.

1 is a plan view of a stretch joint railway bridge according to the prior art.
2 is a plan view of a stretchable joint railway bridge according to an embodiment of the present invention.
3 is a cross-sectional view taken along the line AA of FIG. 2.
4 is a cross-sectional view taken along the line BB of FIG.
5 is an exploded perspective view illustrating an installation state of a shock transmission unit (STU) damper according to an embodiment of the present invention.
6 is a side configuration diagram showing an installation state of a shock transmission unit (STU) damper according to an embodiment of the present invention.
7 is a graph for explaining the operation of the STU (Shock Transmission Unit) damper according to an embodiment of the present invention.
8 is a photograph of a shock transmission unit (STU) damper according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail the details of the present invention. Basic reference will be made to FIGS. 2 to 4, and other drawings will be referred to as necessary.

According to the present invention, there is no expansion joint 130 as shown in FIG. That is, there is no cutout (or gap) of the rail 1 in the middle of the desired section. Of course, the rail (1) should be provided in unit length and should be fixed by welding in the field to form an integral. In FIG. 2, reference numeral 100 denotes a bridge portion and 110 denotes a roadbed portion 110.

The rail 1 is installed inside the rail gutter 3 having a U-shaped cross section. The rail gutter is extended as long as the rail. According to the present invention, the rail 1 is a long rail without expansion joints. The rail 1 is placed on the pad 7 and then placed on the bottom plate 5 of the rail trough. By installing the rail 1 temporarily and then filling the resin 9, the rail 1 is fixedly installed inside the rail gutter 3. Hereinafter, the rail 1, the rail trough 3, the bottom plate 5, and the resin 9 are collectively referred to as a resin rail composite. The vibration transmitted to the rail 1 is transmitted to the concrete slab 11 and the ground through the resin 9 and the rail gutter 3.

"와 같이 되어 있으며 이는 레일홈통(3)과 유사하다. 따라서 레일홈통(3)은 고정홈통(13)에 끼워진 상태에서 레일의 길이방향을 따라 슬라이딩될 수 있게 된다. 단면구조상 콘크리트 슬래브(11)를 성형할 때 고정홈통(13)과 레일홈통(3)을 미리 끼워 결합시킬 수도 있을 것이다.According to the present invention, the fixing gutter 13 is installed on the outside of the rail gutter 3. That is, the rail gutter 3 is installed inside the fixed gutter 13. Fixing gutter 13 is to be installed as a formwork when pouring the concrete slab 11 is to be integral with the concrete slab (11). The cross section of the fixing gutter 13 has a trapezoidal structure having a narrow upper portion and a wider lower portion so as to withstand the pulling force and the lateral force of the rail. That is, the cross section of the fixing gutter 13 is "

It is similar to the rail gutter (3). Therefore, the rail gutter (3) is able to slide along the longitudinal direction of the rail in the state fitted in the fixed gutter (13). When shaping the fixing gutter 13 and the rail gutter (3) may be combined in advance.

The present invention is made to respond to the resin rail composite itself to the length change according to the temperature while sliding along the extension direction of the rail (1) inside the fixing gutter (13). Lubrication means may be further interposed between the fixed gutter 13 and the rail gutter 3 so that the sliding can be performed smoothly. As the lubricating means, a sheet having a small friction coefficient or the like may be used, but a lubricant or lubricating oil is more preferable. Lubricant can be installed by applying to the outer surface of the rail groove 3 or the inner surface of the fixed groove 13 or injected into the gap between them.

"의 형태로 되어 있음으로써, 고정홈통(13)의 상단을 가릴 수 있도록 되어 있다. 이에 의하면 레일홈통(3)과 고정홈통(13) 사이의 틈이 가려지게 된다. 이것은 레일홈통(3)과 고정홈통(13) 사이의 공간으로 빗물, 먼지 기타 이물질이 유입되는 것을 방지하기 위한 것이다. According to another embodiment of the present invention, the upper end of the rail gutter 3 is bent outward so that the cross section is "

", So that the upper end of the fixed gutter 13 can be covered. By this, the gap between the rail gutter 3 and the fixed gutter 13 is covered. To prevent rainwater, dust or other foreign substances from entering the space between the fixing gutters 13.

According to the embodiment of the present invention, damping means 12 for suppressing a sudden length change of the rail 1 are provided at one or more places along the extension direction of the rail. For example, it is for reducing a problem that may occur when a large force is suddenly applied to the rail 1 by the rapid stop of the train. This is because when the rail 1 suddenly slides, unexpected problems such as a sudden stop of the function may occur.

According to an embodiment of the present invention, the damping means may be using a shock transmission unit (STU) damper. Hereinafter, the installation structure of the damping means 12 will be described with reference to FIGS. 5 to 8.

A through hole 17 is provided in one or several bottom plates 15 along the extension section of the fixing gutter 13. The concrete slab 11 is provided with a seating groove 19 having such an area at a point where the through hole 17 is provided. The damper 21 is installed in the seating groove 19. The damper 21 is one end (21a) is connected to the bottom surface of the rail groove (3) and the other end (21b) is fixed to the concrete slab 11 with an anchor bolt. The extension direction of the cylinder of the damper 21 is the same as the extension direction of the rail. As mentioned, the damper 21 may be a hydraulic transmission unit (STU) damper as hydraulic. Damper 21 is to limit the sliding movement speed of the rail to prevent rapid deformation and is provided in the required number and intervals along the extension direction of the rail (1). According to the embodiment of the present invention, the damper 21 for preventing the movement of the rail to the starting braking load of the train may be installed approximately every 10 to 20m. 7 shows the behavior of the STU damper.

At the point where the damper 21 is installed, an installation space is provided as shown in FIG. 4. And this section is not filled with the resin (9) is also to facilitate the installation of the damper. Although not shown, if necessary, this space, that is, an installation space and a space next to the rail not filled with resin, may be provided with a drainage passage or a cover to prevent rainwater from entering.

"의 형태로 절곡된 후판이다. Both ends of the damper 21 are provided with flanges which can be fastened with bolts, respectively, as shown in FIG. 8. The damper 21 and the rail can be fixed more stably and directly by the clamp 27. The clamp 27 has one side connected to the rail and the other side connected to the damper to mediate the fastening of both. The clamps 27 are brought into close contact with the web 1a of the rail and the lower flange 1b.

The plate is bent in the form of ".

According to another embodiment of the present invention, the mound 23 is provided on the upper surface of the concrete slab 11 on both sides of the rail gutter 3 so that rain water does not accumulate in the rail gutter 3. And the upper end of the side plate of the rail gutter (3) may be provided with a long loop 25 to cover the mound (23).

Briefly summarized the contents of the present invention as follows.

The present invention proposes a method for connecting a rail joint for all sections without using a flexible joint in a multi-span and long-span bridge. To this end, the rail 1 is slid so that the axial force due to the displacement of the temperature load transmitted from the lower structure is not transferred to the rail 1, and the damper 21 is specially devised and installed at the bottom of the rail when the upper vehicle is moved. The movement of the rail 1 is stopped so that structural safety is ensured so that there is no abnormality in the operation of the vehicle.

According to the present invention, the longitudinal sliding of the rail (1) can be made over the entire bridge and the sliding is made without resistance to the low strain rate load, such as temperature load, so that the deformation of the substructure is not transmitted to the rail The damper 21 which prevents temporary rail movement is used for the load with a large deformation rate, such as a prototype seed load.

The damper 21's behavior is to isolate the rail and the substructure so that the rail can move at low longitudinal speeds, such as temperature loads, so that no additional axial force acts on the rail. When a high longitudinal speed occurs, the rail 1 is prevented from moving rapidly so that there is no abnormality in safe driving of the vehicle.

The configuration shown and described above is only a preferred embodiment based on the technical spirit of the present invention. Those skilled in the art will be able to make various modifications based on common technical knowledge, but it should be noted that this may be included in the protection scope of the present invention.

1: rail 3: rail gutter
7: pad 9: resin
11: concrete slab 13: fixing gutter
17: through hole 19: seating groove
21: damper 23: mound
25 loop 27 clamp

Claims (7)

Cross sections along the extension lines of the rails on both sides of the concrete slab are "

A rail groove provided to be slidably inserted into the fixed groove; a rail installed at a bottom of the rail groove; a resin body filling the space between the rail and the rail groove to fix the rail; By including;
Sliding resin fixed orbit structure characterized in that the rail groove, the rail and the resin body by the difference in thermal strain rate is configured to allow the longitudinal deformation while sliding along the extending direction of the fixed gutter The method of claim 1,
Sliding resin fixed orbit structure, characterized in that the lubrication means is further interposed between the fixed gutter and the rail gutter The method of claim 1,
The upper end of the rail trough is bent outward so that the cross section is "

", The sliding fixed track structure characterized in that it is to cover the upper end of the fixed gutter The method of claim 1,
Sliding resin fixed orbit structure further comprising a damping means for suppressing a sudden length change of the rail as provided in one or more places along the extension direction of the rail The method of claim 4, wherein the damping means;
A through hole provided in one or several bottom plates along an extension section of the fixing trough; A seating groove provided in the concrete slab at the point where the through hole is provided; Sliding resin fixed orbit structure characterized in that the mounting groove is further provided with a damper one end is connected to the bottom surface of the rail groove and the other end is fixed to the concrete slab The method of claim 5,
The damper is a sliding transmission fixed track structure, characterized in that the STU (Shock Transmission Unit) damper The method of claim 1,
Both sides of the rail gutter are provided with a mound so that rain water does not accumulate in the rail gutter;
Sliding resin fixed orbit structure characterized in that the upper end of the side plate of the rail gutter is provided with a long elongated loop to cover the mound

Images