KR100709099B1 - Construction method of paving track for asphalt filling type and structure thereof - Google Patents

Abstract

The present invention relates to a construction method and structure of an asphalt-based pavement track for hardening the road while running a train on a conventional trajectory track as a track structure for reducing maintenance. By giving the elastic modulus in the middle range between cement and asphalt, it can reduce the brittle fracture of the member and increase the resilience against cyclic load, and also greatly expand the width of the sleepers to 750mm to minimize the train load transferred to the upper part. The purpose of the present invention is to provide a construction method and structure of an asphalt-based pavement track. In addition, the present invention is easy to partially repair and replace the track, and does not require the installation of formwork and backrest, so that the time required for construction and repair can be significantly shortened, and does not interfere with the train operation due to the replacement of the track, Another object is to provide a construction method and structure of asphalt-based pavement tracks excellent in terms of economy and stability.

In order to achieve the above object, the present invention is to excavate the existing phase, and then laid a ground fiber made of a non-woven fabric on the subgrade layer to fill the crest of the inside; Placing a new large sleeper and a variable fastener on the donor galle, and using the variable fastener to couple the track to the large sleeper; Filling a new donor gal through the space between the large sleepers; Adjust the position of the trajectory; Injecting a filler made of an asphalt-based composite material through a space between the large sleepers; Curing after injection of the filler to form a new conductive layer; After forming the new icon layer, provides a method of construction of asphalt-based pavement tracks to form an asphalt surface layer on the surface of the new icon layer. In addition, the present invention is a roadbed layer; Geotextiles formed of both sides of a predetermined height perpendicular to the bottom surface on the bottom and the left and right ends of the bottom surface in contact with the upper surface of the roadbed layer; A new conductive layer filled with a filler made of an asphalt-based composite material in the geosynthetic fiber; An asphalt surface layer formed on the new conductive layer; A plurality of large sleepers coupled in parallel to each other on the new conductive layer; And using a variable fastener on the upper surface of the large sleeper provides an asphalt-based paving track comprising a track coupled to the large sleeper vertically.

Asphalt, Pavement, Roadbed, Geotextile, Large Sleepers, Fillers

Description

Construction method of paving track for asphalt filling type and structure

1 is a perspective view showing an asphalt-based pavement track according to an embodiment of the present invention.

Figure 2 is a front sectional view showing a pavement trajectory shown in FIG.

Figure 3 is a side cross-sectional view showing a pavement trajectory shown in FIG.

Figure 4 is a perspective view showing a filler injection method in the construction method of asphalt-based pavement tracks according to another embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

100: roadbed 200: new icon

210: old layer 220: shoulder layer

300: geotextile 310: bottom

320: both sides 400: asphalt surface layer

500: large sleeper 600: orbit

700: variable fastener 800: forced injection device

810: pressure hose 820: sleeper fixing means

830: injection hole

The present invention relates to a construction method and structure of an asphalt-based pavement track for hardening the road while running a train on a conventional trajectory track to reduce maintenance, and more specifically, partial track repair and As it is easy to replace, and it does not need to install formwork and support, it can shorten the time required for construction and repair, so it does not interfere with train operation due to the replacement of tracks. It is about the construction method and structure of pavement track.

The track not only serves to guide trains on the road, but also protects the undercarriage by relieving the load on the train, which is transferred to the ground. In addition, the running stability and ride comfort of the train are directly affected by the track performance, and a large part of the noise and vibration are generated by the track and the train interaction.

The research on tracks is carried out in three major areas: track technology for improving the speed of trains, environment-friendly track technology considering environmental problems related to noise and vibration problems, and track technology for modernization of maintenance. It is becoming.

In addition, the ballast is located at the bottom of the track and distributes the load transmitted through the rails and the large sleepers to the ground, and transfers the movement of the large sleepers that may appear as rail stretching due to temperature changes. It prevents and prevents it by absorbing the vibration of the train and improves the ride quality. It also serves to facilitate drainage of rainwater and prevent weeds from growing.

In recent years, various tracks have been developed to improve the speed of trains and to reduce noise and vibration, and gradually replace them, but the share of traditional donor tracks is still high. Research on maintenance and replacement is also ongoing. In order to maximize the longevity and work effect of the traditional donor track, the repair equipments such as MTT (Multiple Tie Tamper), DTS (Dynamic Track Stabilizer) and Rail Grinding Car have been put into the actual field and have many effects.

However, the conventional trajectory trajectory has problems such as the increase in the amount of torsion of the track due to the high speed, weight and compactness of the train increases the cost for maintenance and repair, and troubles in the operation of the train.

In particular, the construction procedure of the conventional road renovation work consists of the removal of old tracks, the installation of new sleepers, the installation of formwork, jackie and temporary support, the placing of concrete, and the curing, and the construction process and track structure similar to the new construction of slab tracks. Therefore, there are problems such as a lot of construction time, construction cost is also increased, the situation is necessary to take measures against this.

Therefore, the present invention has been proposed to solve the above problems, by using the asphalt-based composite filling material, by providing the elastic modulus of the intermediate range of the cement and asphalt system to reduce the brittle fracture of the member and for the repeated load The purpose of the present invention is to provide a method and structure for the construction of asphalt-based pavement tracks, which can increase resilience and minimize the train load delivered to the top by greatly expanding the width of the sleepers to 750 mm.

In addition, the present invention is a structure to harden the figure while running the train on the existing trajectory track, as a track structure for reducing maintenance, partial track repair and replacement is easy, and laying of formwork and support Since the time required for construction and repair can be greatly shortened, it does not interfere with train operation due to the replacement of tracks, and it has another purpose to provide a construction method and structure of asphalt-based pavement tracks excellent in terms of economy and stability. .

In order to achieve the above object, the present invention is to excavate the existing phase, and then laid a ground fiber made of a non-woven fabric on the subgrade layer to fill the crest of the inside; Placing a new large sleeper and a variable fastener on the donor galle, and using the variable fastener to couple the track to the large sleeper; Filling a new donor gal through the space between the large sleepers; Adjust the position of the trajectory; Injecting a filler made of an asphalt-based composite material through the space between the large sleepers; Curing after injection of the filler to form a new conductive layer; After forming the new icon layer, provides a method of construction of asphalt-based pavement tracks to form an asphalt surface layer on the surface of the new icon layer.

When laying the geotextiles, the geotextiles are composed of a bottom surface having a width larger than the width of the figure and both sides of the left and right sides having a predetermined height, and prevents spillage of gravel shapes and fillers.

The filler is preferably made of a high flow rate, ultra-fast diameter and non-shrinkable asphalt composite for ease of injection and early strength.

The asphalt composite material is composed of cement, asphalt emulsion, polymer, water, condensation regulator, antifoaming agent and aluminum powder, and can absorb shock and vibration due to the high elasticity resilience to reduce the brittleness of cement and improve the strength of asphalt. Let's do it.

Injection of the filler may be injected in a natural flow method into the space between the large sleepers or uniformly distributed by pressurized vibration using a forced injection device.

The forced injection device is a pressure feed hose for injecting the filling material into the new conductive layer through the injection hole by filling the filler; And a sleeper fixing means positioned on an upper surface of the large sleeper to fix and pressurize the large sleeper when the filler is injected, and a transfer path connecting the pressure hose to the injection hole.

Preferably, the variable fastener has an adjustable top and bottom 30 mm, left and right ± 25 mm or more.

The width of the large sleepers is 750mm or more, the thickness is 150mm or less, it is preferable that the spacing between the large sleepers is 15cm or more.

In addition, the present invention is a roadbed layer; Geotextiles formed of both sides of a predetermined height perpendicular to the bottom surface on the bottom and the left and right ends of the bottom surface in contact with the upper surface of the roadbed layer; A new conductive layer filled with a filler made of an asphalt-based composite material in the geosynthetic fiber; An asphalt surface layer formed on the new conductive layer; A plurality of large sleepers coupled in parallel to each other on the new conductive layer; And using a variable fastener on the upper surface of the large sleeper provides an asphalt-based paving track comprising a track coupled to the large sleeper vertically.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing an asphalt-based pavement track according to an embodiment of the present invention, Figure 2 is a front sectional view showing a pavement track shown in Figure 1, Figure 3 shows a pavement track shown in Figure 1 Side cross section view.

As shown in Figures 1 to 3, the present invention is to prevent the deformation of the track by securing the appropriate elasticity by injecting the filler in the gap of the box, the construction method of asphalt-based pavement track according to the present invention After digging the existing phase, the ground fiber layer (300) made of a non-woven fabric on the subgrade layer (100) to fill in the box gal; Placing a new large sleeper 500 and a variable fastener 700 on the donor galle, using the variable fastener 700 to couple the track 600 to the large sleeper 500; Filling a new donor gal through the space between the large sleepers 500; Adjust the position of the trajectory (600); Injecting a filler made of an asphalt-based composite material through a space between the large sleepers 500; Curing after injection of the filler to form a new conductive layer (200); After the new conductive layer 200 is formed, an asphalt surface layer 400 is formed on the surface of the new conductive layer.

In addition, the asphalt-based pavement track according to the present invention is a roadbed layer (100); Geotextile 300 formed of a non-woven fabric formed of both sides 320 of a predetermined height perpendicular to the bottom surface 310 on the bottom 310 and the left and right ends of the bottom 310 in contact with the top surface of the roadbed layer 100 ); A new conductive layer 200 filled with a filler made of an asphalt-based composite material in the interior of the civil fiber 300; Asphalt surface layer 400 formed on the new icon layer 200; A plurality of large sleepers 500 coupled in parallel to each other on the new conductive layer 200; And a track 600 coupled to the large sleeper 500 vertically using the variable fastener 700 on the upper surface of the large sleeper 500.

In the construction method and structure of the asphalt-based pavement track according to the present embodiment, the spherical layer 210 is left on the subgrade layer 100 to both sides 320 of the geosynthetic fiber 300, the Excavating the spherical layer 210 of the position where the geotextile 300 is to be laid.

The outer portion of the spherical layer 210 is formed with a shoulder layer 220 to prevent the mixing of foreign matter, the shoulder layer 220 is inclined so that the upper surface of the spherical layer 210 is higher toward the outside. .

When laying the geotextile 300, the geotextile is composed of a bottom surface 310 having a width greater than the width of the figure and the left and right sides 320 having a predetermined height, thereby preventing the outflow of filler material It prevents damage due to function and compaction work.

The new conductive layer 200 is cured in a state where the mixing and filling materials are properly blended. That is, the filler constituting the new icon layer 200 is preferably made of a high flow rate, ultrafast diameter, and non-shrinkable asphalt-based composite material in order to ensure easy injection and early strength.

Here, the asphalt composite material is composed of cement, asphalt emulsion, polymer, water, coagulation regulator, antifoaming agent and aluminum powder, etc., to form a medium strength of cement and asphalt, reducing the embrittlement of the cement system and The high elastic restoring force with improved strength makes it possible to absorb shocks and vibrations.

As such, by using the asphalt-based composite filling material, it is possible to give the elastic modulus of the intermediate range between the cement and the asphalt-based to reduce the brittle fracture of the member and to increase the resilience against the cyclic load.

Figure 4 is a perspective view showing a filler injection method in the construction method of asphalt-based pavement tracks according to another embodiment of the present invention.

Injection of the filler may be injected into the space between the large sleepers 500 in a natural flow method or by using a forced injection device 800 as shown in FIG.

The forced injection device 800 according to another embodiment of the present invention is a pressure feed hose 810 for injecting the filler to the new image layer 200 through the injection hole 830 by pressing the filler; Located on the upper surface of the large sleeper 500, when filling the filler, the large sleeper 500 is fixed and pressurized, the sleeper fixing the sleeper is formed with a transfer path connecting the injection hose 810 and the injection hole 830 Means 820.

The filler is injected into the new bed layer 200 by pressurization by the pressure feed hose 810 and vibration of the sleeper fixing means 820, and the transport path is straight from the upper surface to the lower surface of the sleeper fixing means 820. It is preferable to be formed to penetrate through.

In addition, according to the natural flow method of the filler injection method, since the fluidity of the filler itself is very high, it can be uniformly filled without gaps between the gravel islands. In addition, in order not to impede the operation of the train immediately after the blocking work, the hardening process of the filler, which is a part of the construction time, is important. Accordingly, it is preferable that the uniaxial compressive strength of the filler per hour is 0.2 MPa or more.

The variable fastener 700 is preferably adjustable above and below 30mm, left and right ± 25mm, which is for the adjustment when the torsion of the track in the future because the large sleeper 500 and the new bed 200 is integrated. .

The width of the large sleepers 500 is 750mm or more, the thickness is 150mm or less, it is preferable that the spacing between the large sleepers is 15cm or more. In this way, the width of the large sleeper can be greatly expanded to 750mm or more to minimize the train load delivered to the top.

After forming the new icon layer 200, it is preferable to form an asphalt surface layer 400 on the surface of the new icon layer 200, the asphalt surface layer 400 to facilitate the drainage, Block dust generation or surface contamination of hardener.

The clove is basically recycle the existing material, it is preferable to use the washing aggregate in the range of the appropriate particle size, the shortage is supplemented with new gravel. It is possible to adjust the trajectory by the MTT machine, since the large sleeper 500, the trajectory 600 and the variable fastener 700 is installed while the existing donor gale is located in the new icon layer 200. . On the other hand, the roadbed layer 100 of the track to which the pavement track 600 is applied to withstand 11kgf / cm ³ or more.

The construction method and structure of the asphalt-based pavement track of the present invention having the configuration as described above can be made by the machine MTT operation is shortened construction time does not interfere with train operation, partial replacement and maintenance of the track, Maintenance is possible at low cost.

Thus, according to the present invention, it has excellent maintenance and economy. In detail, when calculating the construction cost in the domestic application, according to the present invention takes about 700 million per 1 km, but according to the existing method it takes about 1.5 billion per 1 km, according to the present invention Not only can the construction cost be significantly reduced, but the additional savings through the development and improvement of track materials can be expected to be large.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

As described above, according to the present invention, as a track structure for reducing maintenance, the train can be cured while operating a train on an existing donor track, and the partial track repair and replacement can be easily performed.

In addition, the present invention does not require the installation of existing formwork and backrest, so that the time required for construction and repair can be greatly shortened, which does not interfere with train operation due to the replacement of tracks, and also has excellent effects in terms of economy and stability. have.

In addition, the present invention can be applied to a section in which repeated torsional torsion occurs, and can be partially replaced and repaired at a site where the possibility of orbital torsion is high, and thus economical and construction time can be shortened.

In addition, the present invention is excellent in workability and stable and economical effect because it can be mechanized construction rather than the construction by the existing manpower.

In addition, the present invention has the effect that by using the asphalt-based composite filling material, it is possible to give the elastic modulus of the intermediate range between the cement and the asphalt-based to reduce the brittle fracture of the member and increase the resilience against the cyclic load.

In addition, the present invention has an effect that can greatly minimize the train load transmitted to the upper by greatly expanding the width of the large sleeper to 750mm.

Claims (10)

After excavating the existing imagery, the geotextiles made of nonwoven fabric are laid on the subgrade layer to fill in the donor galle therein; Placing a new large sleeper and a variable fastener on the donor galle, and using the variable fastener to couple the track to the large sleeper; Filling a new donor gal through the space between the large sleepers; Adjust the position of the trajectory; Injecting a filler made of an asphalt-based composite material through a space between the large sleepers; Curing after injection of the filler to form a new conductive layer; After forming the new conductive layer, forming an asphalt surface layer on the surface of the new conductive layer; Injection of the filler is uniformly distributed by pressure and vibration using a forced injection device into the space between the large sleepers; The forced injection device is a pressure feed hose for injecting the filler to the new conductive layer through the injection hole by the pressure injection; And a sleeper fixing means positioned on an upper surface of the large sleeper to fix and pressurize the large sleeper when a filler is injected, and having a transport path connecting the pressure hose and the injection hole. Asphalt-based pavement track construction method. The method of claim 1, The geosynthetic fiber is composed of a bottom surface having a width greater than the width of the island and left and right sides having a predetermined height, and prevents the outflow of gravel beds and fillers and is made of a nonwoven fabric. Asphalt-based pavement track construction method. The method of claim 1, Filler made of the asphalt-based composite material has a state of high flow rate, ultra-fast diameter and non-shrinkage in order to ensure ease of injection and early strength Asphalt-based pavement track construction method. The method according to claim 1 or 3, The asphalt composite material is composed of cement, asphalt emulsion, polymer, water, condensation regulator, antifoaming agent and aluminum powder, and absorbs shock and vibration due to high elasticity resilience that reduces the brittleness of cement and improves the strength of asphalt. Enabled Asphalt-based pavement track construction method. delete delete The method of claim 1, The width of the large sleepers is more than 750mm, the thickness is less than 150mm, the spacing between the large sleepers is made of more than 15cm Asphalt-based pavement track construction method. Roadbed; Geotextiles formed of both sides of a predetermined height perpendicular to the bottom surface on the bottom and the left and right ends of the bottom surface in contact with the upper surface of the roadbed layer; A new conductive layer filled with a filler made of an asphalt-based composite material in the geosynthetic fiber; An asphalt surface layer formed on the new conductive layer; A plurality of large sleepers coupled in parallel to each other on the new conductive layer; And A track coupled vertically to the large sleeper using a variable fastener on the upper surface of the large sleeper Including; Injection of the filler is uniformly distributed by pressure and vibration using a forced injection device into the space between the large sleepers; The forced injection device is a pressure feed hose for injecting the filler to the new conductive layer through the injection hole by the pressure injection; And a sleeper fixing means positioned on an upper surface of the large sleeper to fix and pressurize the large sleeper when a filler is injected, and having a transport path connecting the pressure hose and the injection hole. Asphalt-based pavement track. The method of claim 8, Filler made of the asphalt-based composite has a state of high flow rate, ultra-fast diameter and non-shrinkage in order to ensure ease of injection and early strength, The asphalt composite material is composed of cement, asphalt emulsion, polymer, water, coagulation control agent, antifoaming agent and aluminum powder, and absorbs shock and vibration due to the high elasticity resilience that breaks the embrittlement of cement and improves the strength of asphalt. Enabled Asphalt-based pavement track. The method of claim 8, The width of the large sleepers is more than 750mm, the thickness is less than 150mm, the spacing between the large sleepers is made of more than 15cm Asphalt-based pavement track.

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