JP2013044126A - Track deviation repair method for track - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need of heavy machines and wedges, to eliminate the need of installing/pulling out a mold form, to reduce work time/work days, and to efficiently and highly accurately correct track deviation.SOLUTION: A track deviation repair method for a track includes respective steps of: a) installing a plurality of anchors 28 for lift-up on an upper surface of a filling layer 4 for which a crosstie 2 and ballast 3 are solidified; b) installing a portal track lifting jig 10 which is supported at both ends by a ballast layer 3 on an outer side of the filling layer 4 and traverses a track 1 and the anchors 28; c) finely adjusting a track height by pulling up the anchors 28 with jacks 16 and 42 provided on the track lifting jig 10 and floating the filling layer 4 from the ballast 3; and d) packing a filler in a gap formed between the ballast 3 and the filling layer 4.

Description

  The present invention relates to a trajectory error repair method for correcting a trajectory error of a labor-saving trajectory or a slab trajectory that has a trajectory error (sinking) and stabilizing the trajectory.

  Labor-saving tracks are widely used to save labor on maintenance work on railway tracks. A roadbed ballast is laid on an existing earth roadbed or a concrete roadbed, a sleeper is laid on the ballast, and a rail (track) is fastened to the sleeper. However, the rail surface sinks as the train passes, and it is inevitable that maintenance is required to repair the resulting track error. Therefore, in order to save labor for this maintenance work, it has been conventionally performed to use a labor saving track.

  FIG. 23 is a diagram illustrating an example of a cross-sectional structure of a conventional labor-saving track, and FIG. 24 is a diagram illustrating an example of a work process. In FIG. 23, reference numeral 1 is a pair of left and right rails (tracks), 2 is a sleeper, and 3 is a ballast. The ballast 3 is a filling layer 4 in which the lower part and the periphery of the sleeper tree 2 are hardened such as a solidifying agent. That is, in this labor-saving track, after excavating the old roadbed ballast to a predetermined thickness and rolling the surface, spread the non-woven fabric on the upper surface, spray and roll the crushed stone on it, and further sleeper trees and rails on it A structure in which the filler layer 4 is formed by assembling the rails formed by fixing and hardening and injecting a curing agent into the upper part from the nonwoven fabric. In addition, ascon pavement 5 is performed on the surface and side of the ballast 3.

  Patent Document 1 describes that a stabilizing material is sprayed or injected into a roadbed ballast immediately below a filling layer in order to prevent the rail from sinking, and is solidified. In order to inject the stabilizer, a hole for leakage of the stabilizer is made in advance in the nonwoven fabric, a part of the nonwoven fabric is meshed, or a perforated tube is inserted in advance into the ballast directly under the nonwoven fabric. It has been proposed that the stabilizer can be injected after the temporary track has been laid.

  Patent Document 2 discloses that a flexible bag is interposed between a sleeper and a roadbed in order to prevent initial settlement of the track, particularly in the case of a new track, and the filling material is pumped into the flexible bag. It is described that an external pressure is applied to the roadbed by filling and the roadbed is preliminarily consolidated by this external pressure. As a result, the subsidence amount of the roadbed can be reduced even if the train weight is applied thereafter.

  Even in a slab track using a concrete slab, the concrete roadbed may be displaced due to changes in the ground and the track correction may be required. In this case, in the past, manual jacks were inserted between the four corners of the concrete slab and the roadbed, and all the jacks were driven in synchronism to drive the concrete slab above the roadbed. In this state, the jack was removed and the filler was filled between the concrete and the roadbed.

JP-A-6-108401 JP-A-8-74202

  However, those described in Patent Documents 1 and 2 both prevent rail subsidence (track misalignment) or reduce the amount of subsidence. However, in actual maintenance work, it may be necessary to raise the rail. In areas where heavy trains frequently pass, areas where the roadbed is flexible, and where there is a large impact near the rail joints, rail subsidence will be larger than other adjacent areas, and the rails will be pulled up. To lift up).

  Therefore, the ballast on both sides of the filling layer is dug down (step A in FIG. 24), jacks are inserted below both sides of the filling layer (step B), and the height of the filling layer is maintained by adjusting to a predetermined rail height. It is conceivable to inject a filler (such as a filcon material, a slurry-like cement-type injection agent, and grout). However, in this case, after adjusting the height with a jack (step B), a wedge is driven under the filling layer to hold the filling layer (step C), and a mold is installed around the filling layer (step). It is necessary to inject a filler such as a filcon material from (D) (step E). For this reason, it is necessary to cure with the formwork installed until the filler is cured (process F), and heavy equipment such as a backhoe is required for digging around the packed bed (process A) and backfilling (process G). Therefore, a lot of work time and work days (usually about 3 days) are required for installation and removal of the formwork (processes D and G). For this reason, there is a problem that the work is large and the efficiency is low.

  Further, when the filling layer is lifted with a jack, both ends of the filling layer are pushed up, so that it is inevitable that the vicinity of the center is lowered. For this reason, the rail height changes after completion of repair, and there is also a problem that the track error tends to be inaccurate.

  On the other hand, in the slab track, it is necessary to synchronously drive a plurality of jacks inserted between the slab and the roadbed, so that a large number of workers are required and the work efficiency is poor. Further, in order to inject the filler, it is necessary to surround the side surface of the slab with a mold or the like, and the work efficiency is further deteriorated. Furthermore, since the concrete slab is not elastic, it is necessary to raise the whole at the same time, and the work becomes large-scale.

  The present invention has been made in view of such circumstances, and does not require a heavy machine such as a backhoe or a wedge, does not require installation / removal of a formwork, reduces work time and work days, and is efficient and highly accurate. It is an object of the present invention to provide a labor-saving track trajectory repair method that can correct track trajectory. It is another object of the present invention to provide a method for repairing a track error in a slab track.

  According to the present invention, the above-described object in the labor-saving track is a method for repairing the track error in the labor-saving track of the structure in which the ballast and the sleeper are consolidated, and a) for lifting up on the upper surface of the filling layer in which the sleeper and the ballast are consolidated B) installing a portal-type raising jig that is supported at both ends by the ballast layer outside the filling layer and traverses the track and the anchor; c) The height of the orbit is finely adjusted by pulling up with a jack provided on the tool and floating the filling layer from the ballast; d) filling the filler in the gap formed between the ballast and the filling layer; This is achieved by a labor-saving track trajectory repair method.

In addition, the above-mentioned purpose in the slab track is a method for repairing the track error of the slab track in which the track is fixed to the concrete slab.
a ') installing a plurality of lift-up anchors on the upper surface of the concrete slab;
b ') installing a portal-type uplifting jig that is supported by the roadbed outside the concrete slab and that crosses the track and the anchor;
c ′) The anchor is lifted by a jack provided on the upper jig, and the concrete slab is lifted from the roadbed to finely adjust the track height;
d ') Filling the gap created between the roadbed and the concrete slab;
This is achieved by a method for repairing a track slab track having the above steps.

  In the case of a labor-saving track, a lift anchor is fixed to the filler layer, and this anchor is lifted by a jack provided on the upper jig that supports the outer side of the filler layer, so that the filler layer is lifted from the ballast during this time. Since the filling material is filled in the gap that can be made, there is no need to dig up the ballast or backfill the ballast outside the filling layer. For this reason, large heavy machinery is unnecessary. In addition, since a mold is not required when injecting the filler, work for installing and removing the mold is unnecessary, and the work time and the number of work days can be shortened. Furthermore, if the filling layer is pulled up not only at both ends but also at a plurality of appropriate positions (for example, three locations), the bending of the filling layer can be prevented, and a highly accurate trajectory deviation can be corrected.

  In the case of a slab track, the number of workers that drive a plurality of jacks synchronously can be reduced, and work efficiency can be improved.

The top view which shows one Example which applied this invention to the labor-saving track | orbit Cross-sectional view in the direction perpendicular to the rail showing the preparation process for pulling up the filling layer Sectional view showing the state where the rail is also lifted Sectional view showing formation process of anchor fixing part Similarly, an enlarged cross-sectional view of the anchor fixing part Explanatory drawing of the process of installing the filler injection pipe The figure which shows the other Example of a raising jig Explanatory drawing of jack set for lift up using this upper jig Similarly explanatory drawing of lift-up process Explanatory drawing of filling material injection process for improvement of surrounding ground The figure which shows the filling injection process of a filler similarly The figure which shows the ground reinforcement completion state The front view which shows the use condition of the upper jig | tool of FIG. Same top view Same right side view Cross section of upper jack The figure which shows the work process of this invention The figure which shows the drilling device for the injection pipe placement Partial sectional view to show the check valve of the injection pipe Illustration of packer operation Explanatory drawing of step injection process for filler Sectional view of rail orthogonal direction showing an embodiment in which the present invention is applied to a slab track Cross section of labor saving track Work process diagram showing an example of a conventional method of repairing a track error

  The anchor may be screwed into an anchor fixing portion in which an adhesive anchor (for example, a chemical anchor, “Chemical Anchor” is a trade name of Nippon Decorac Co., Ltd.) is fixed to the anchor hole drilled in the filling layer so as to be detachably fixed. (Claim 2). In this case, for example, a low-temperature fast-hardening type polyester resin anchor can be used as the adhesive anchor, and an anchor formed with a screw can be screwed into an embedded nut fixed to the anchor. The anchor hole is preferably closed with a protective lid when the anchor is removed. This is because it can be used at the time of the next trajectory adjustment. The anchor may be a vacuum chuck that is in close contact with the upper surface of the filling layer.

  The anchors and anchor fixing portions are preferably provided at a total of three locations between the outer side of the track and the track on a straight line in the traverse direction. This is because by providing anchors and anchor fixing portions between the tracks (near the middle of the filling layer), it is possible to prevent the filling layer from being curved, and when the number of anchor fixing portions is increased to 4 or more, the work efficiency decreases. . It is preferable that a plurality of the raising jigs are arranged at predetermined intervals in the longitudinal direction of the track so as to rise above the predetermined range of the filling layer. Part of the packed bed may be raised due to its elasticity, but a wide range may be raised simultaneously with multiple raising jigs. In this case, work accuracy and work efficiency are improved. I can plan.

  The upper jig includes a pair of support portions, a beam portion spanned between both support portions, and a lower jack for adjusting the height of the beam portion provided on both support portions, and in the step b), The height of the anchor is roughly adjusted by the lower jack, and in the step c), the track height is finely adjusted by the upper jack for fine adjustment held on the beam portion (Claim 4). If the lifting amount is set separately for the upper jack and the lower jack, the adjustment becomes easier and the efficiency is improved (claim 5).

  Injection of a filler (such as a filcon material) can be performed by various methods. It may be injected from the injection hole opened in the filler layer, but if it can be injected into the gap between the ballast and the filler layer and it can be injected deeply down to the bottom (ballast and the underlying roadbed), the ballast and its It is possible to more reliably reduce or prevent trajectory error by simultaneously reinforcing the bottom road bed (stabilizing the road bed and modifying the ground bed).

  For that purpose, it is better to do as follows. That is, in step a), an anchor fixing part is formed in the packed bed, and a ballast and an injection pipe reaching the lower side are installed through the packed bed, and in step d), a void and its By injecting the filler (filcon material) downward, the filler can be smoothly injected not only into the gap but also into the ballast and earth roadbed (underground board) thereunder (Claim 6). In this case, the injection pipe is a steel pipe that is inserted into a drilling hole formed by a drilling machine and formed with a large number of small holes. From this injection pipe, a filler, that is, filcon material or grout (such as cement milk or mortar) is injected. Then, it is preferable that the gap formed between the ballast and the filling layer is filled and injected into the ballast or the earth roadbed to improve the roadbed strength (roadbed improvement) in a continuous process. In this case, if a protective lid is detachably provided at the upper end opening, it is possible to prevent foreign matter from entering the micropile during the process of pulling up the filling layer with an anchor.

  A check valve is attached to the small hole of the injection pipe to prevent shavings and filler from entering the injection pipe (reverse flow) when forming a hole by the drilling device (Claim 8). . Also, in the injection tube, a packer is inserted in the middle of the injection tube, the fixed position of which can be changed and the filler can pass through, and the filler is injected below through the packer with the packer fixed below the gap, After that, after the packer is moved and fixed above the gap, the filler is preferably injected into the gap. That is, the injection is performed stepwise from below (step injection method).

  The anchor fixing part inserts the adhesive anchor into the drilling hole, and drives the fixed anchor rod by destroying the container of the adhesive anchor by driving all screws or deformed steel bars with a sharpened tip into it. A lift-up connection nut may be fixed to the upper end of the all screws or deformed steel rods fixed thereto, and a long screw may be screwed into the nut to form an anchor (claim 10).

  In the case of a slab track, the anchor is preferably a vacuum chuck that is vacuum-adsorbed on the slab surface. This is because slabs are made of concrete with reinforcing bars, so it is difficult to drill holes and adhesive anchors cannot be used. In addition, if a plurality of hoisting machines are installed at predetermined intervals in the longitudinal direction of the track and these are driven simultaneously so that the entire slab is lifted simultaneously, the work efficiency is improved and the accuracy of the track error is improved. Item 13).

  In FIG. 1, since the same code | symbol was attached | subjected to the corresponding part of FIG. 23, the description is not repeated. In FIG. 1, reference numeral 10 denotes an upper jig, which is formed in a substantially gate shape that crosses the rails 1 and 1 as shown in FIGS. That is, the upper jig 10 has a pair of support portions 12, 12 with a beam portion 14 spanned between them, and each support portion 12 is provided with a hydraulic lower jack 16. Each support portion 12 is supported on the upper surface of the ballast 3 on the outside of the rails 1 and 1, and both ends of the beam portion 14 are supported on this upper end. Here, the beam portion 14 is substantially orthogonal to the rails 1 and 1.

  Before installing the upper jig 10, an anchor fixing portion 18 and a filler injection pipe (pile) 20 are installed in the filling layer 4 (steps a and b in FIG. 17). The anchor fixing portions 18 are provided at three locations along a straight line that crosses the rail 1. In other words, the upper jig 10 is provided at a total of three locations of the rails 1, 1, the outer side, and the vicinity of the center, and the beam jig 14 of the upper jig 10 is positioned above this. Since the upper jig 10 is installed at appropriate intervals in the length direction of the rail 1, three sets of the anchor fixing portions 18 corresponding to one upper jig 10 are also adjusted accordingly. The rails 1 are installed at predetermined intervals in the longitudinal direction.

  In FIG. 1, the anchor fixing unit 18 is preferably provided along a straight line passing between two adjacent sleepers 2. This is because all the pulling force by the anchor 28 described later directly acts on the filling layer 4. However, it may be provided so as to penetrate the sleepers 2 and reach the filling layer 4.

  The anchor fixing portion 18 is formed by an adhesive anchor such as a chemical anchor (trade name) as shown in FIGS. That is, as shown in FIG. 4, the anchor hole 22 is first drilled in the filling layer 4 by manual work using a hammer drill or the like (A in FIG. 4). The anchor hole 22 is cut with a blower, dust on the inner wall of the hole is removed with a chemical brush, further cleaned with a blower or a dust collector, and then a capsule loaded with an adhesive is inserted. Then, the capsule is broken by driving a steel rod 24 provided with a screw or irregularities on the surface of the anchor hole 22 having a sharp tip, and the steel rod 24 is fixed by a chemical reaction (B in FIG. 4).

  A connecting nut 26 is provided at the upper end of the steel rod 24, and the depth of the anchor hole 22 and the length of the steel rod 24 are set so that the connecting nut 26 enters the anchor hole 22 (FIG. 5). A). An anchor 28 is screwed into the connecting nut 26, and the filling layer 4 is pulled up via the anchor 28 (B in FIG. 5). In addition, after the repair of the trajectory error is completed by raising (lifting up) the filling layer 4, the anchor 28 is removed, and the protective lid 30 is screwed into the connecting nut 26 (C in FIG. 5). The protective lid 30 prevents foreign matter from entering the connecting nut 26 and can be used when repairing the track error using the same anchor fixing portion 18 in the future.

  As shown in FIG. 6, the filling material injection pipe 20 is a steel pipe (pile) to be inserted into a hole 34 (A in FIG. 6) formed at an appropriate position of the filling layer 4 using a small hole drill 32. In this steel pipe, a large number of small holes are formed. Here, the hole drilling machine 32 is placed on steel mounts 38 and 38 mounted on the sleeper 2 at a position where it does not interfere with the rail 1, and the hole drilling 34 is placed at an appropriate position such as between the sleepers 2 as shown in FIG. Then, a steel pipe is inserted into the injection pipe 20. A protective lid 40 is detachably fixed to the injection pipe 20 to prevent foreign matter from entering the steel pipe when the filling layer 4 is pulled up by the anchor 28 (B in FIG. 6).

  As described above, after the installation of the anchor fixing portion 18 and the fillcon material injection pipe 20 is completed in the filling layer 4, the upper jig 10 is installed (step c in FIG. 17). That is, the pair of support portions 12 are erected on the ballast 3 and the beam portion 14 is hung thereon (A and B in FIG. 2). At this time, the beam portion 14 of the upper jig 10 is positioned above the three anchor fixing portions 18. In addition, the left and right lower jacks 16 are roughly adjusted so that the height of the beam portion 14 is substantially appropriate and horizontal.

  On the beam portion 14, an upper jack 42 made of a hydraulic center hole jack is placed above each anchor fixing portion 18. As shown in FIG. 16, the jack 42 has a structure having a through hole penetrating the center in the vertical direction. In FIG. 16, reference numeral 44 denotes a cylindrical body, and a cylindrical guide 46 is fixed to the lower end thereof so as to extend concentrically into the body 44. A piston 48 is slidably loaded between the outer peripheral surface of the guide 46 and the inner peripheral surface of the body 44. A cylindrical lid block 50 that has entered between the upper outer peripheral surface of the piston 48 and the inner peripheral surface of the body 42 is fixed to the upper end surface of the body 44.

  A hydraulic chamber 52 surrounded by the inner surface of the bottom portion, the outer periphery of the guide 46 and the lower surface of the piston 48 is formed on the inner bottom of the body 44. The hydraulic chamber 52 is supplied with hydraulic pressure from a hydraulic unit (not shown), and the piston 48 is raised by the hydraulic pressure. A low pressure chamber 54 communicating with the atmospheric pressure is formed by the outer peripheral surface of the piston 48, the inner peripheral surface of the body 44, and the lower surface of the lid block 50. The piston 48 is formed with a through hole 56 that is coaxial with the guide 46 and penetrates in the vertical direction and has the same diameter as the guide 46.

  The anchor 28 is passed through the guide 46 of the upper jack 42 and the through hole 56 of the piston 48 from above, and the lower end thereof is screwed into the connecting nut 26 of the anchor fixing portion 18. A nut 58 for adjusting the height of the anchor 28 is screwed onto the anchor 28 from above. In other words, the lower surface of the nut 58 is brought into contact with the upper end of the piston 48 by the rotation of the nut 58 so that the upper jack 42 and the anchor 28 are free from play. Three upper jacks 42 are similarly set. FIG. 2C shows this state.

  When hydraulic pressure is supplied to the hydraulic chambers 52 of the three upper jacks 42 in this state, the upper surfaces of the pistons 48 of the upper jacks 42 raise the nuts 58 and the anchors 28 together. For this reason, the filling layer 4 to which the lower ends of the anchors 28 are coupled is pulled up from the ballast 3 (step d in FIG. 17). By individually controlling the hydraulic pressure of each upper jack 42, the height of the rails 1 and 1 can be finely adjusted. Further, the cant (tilt) of the rails 1 and 1 is finely adjusted simultaneously.

In the state where the rail height and the cant are finely adjusted, a gap 60 is formed between the filling layer 4 and the ballast 3 (FIG. 3). A filling material (fillcon material is suitable) is injected into the gap 60 from the injection tube 20 (step e in FIG. 17). In other words, the filler 60 is injected and filled in the gap 60, and the base material is improved by injecting and filling the filler (grouting is suitable) into the ballast 3 and the soil roadbed below. In this state, the hardening of the filler is awaited (step f in FIG. 17). In other words, it is cured.

  When this curing is finished, the upper jig 10 is removed (step g in FIG. 17). That is, the lifting force applied to the anchor 28 is removed by removing the hydraulic pressure of the upper jack 42, the nut 58 is loosened and removed, and the lower end of the anchor 28 is removed from the connection nut 26 of the anchor fixing portion 18. In this state, the anchor 28 is pulled upward. After the anchor 28 is pulled out, the upper jig 10 is disassembled and removed. Then, the protective lids 30 and 40 are attached to the anchor fixing portion 18 and the injection port, and moved to the next place where the trajectory is repaired.

  7 to 15 show other embodiments. In this embodiment, the structure of the upper jig 10 of the first embodiment is different, and the construction method itself is not different. Accordingly, portions corresponding to those in the first embodiment described with reference to FIGS. 1 to 6 are denoted by the same reference numerals, and the description thereof will not be repeated. As shown in FIGS. 13 to 15, the upper jig 100 used here has two support portions 102 on each of the left and right sides, and has a total of four support portions 102. On the upper ends of the four support portions 102, a section steel 104 is mounted as a beam portion assembled in a square frame shape, and three sets of small beams 106 hang over the shape steel 104 in parallel with the track 1. Has been. The vicinity of the center of the beam 106 is located above the three anchor fixing portions 18.

  The small beam 106 is a pair of I-beams arranged opposite each other with a gap therebetween, and an anchor 28 passes through this gap. The upper jack 42 (same as shown in FIG. 16) is fixed to the upper surface of each beam 106 by a vise (not shown) or the like. Here, the upper jacks 42 are respectively positioned above the anchor fixing unit 18. FIG. 7 shows this state before the upper jack 42 is installed. In this embodiment, the lower jack 16 made of a giraffe jack is used for the support portion 102. This giraffe jack adjusts the height roughly by moving the feed screw up and down by rotating the manual nut ring 108 (see FIG. 7), and then the height or inclination of all (9) upper jacks 42. (Kant) is adjusted (coarse adjustment).

  As shown in FIG. 7, the upper jig 100 is filled with an anchor pipe 18 and an injection pipe made of a steel pipe (pile) 20 inserted therein and a drill hole 34 serving as a filler inlet. It is installed above the layer 4 (steps a, b and c in FIG. 17). The upper jack 42 is fixed to the beam 106. Then, the anchor 28 is passed through the upper jack 42, and the lower end is connected to the anchor fixing unit 18. FIG. 8 shows this state.

  Then, a hydraulic pressure of a predetermined pressure is supplied from the hydraulic unit while individually adjusting all the upper jacks 42, and the anchor 28, the filling layer 4 and the steel pipe 20 are pulled up integrally. Therefore, a gap 60 is formed between the filling layer 4 and the ballast 3 (step d in FIG. 17). FIG. 9 shows this state.

  After the preparation as described above, a filler such as grout (slurry cement-based injection material filled in the steel pipe and the hole wall) is injected from the steel pipe 20 (step e in FIG. 17). At this time, the packer 110 is put in the steel pipe so as to apply pressure to the grout fluid (A in FIG. 10). This packer 110 is an inflatable wire-filled rubber body and an injection device, and after inflating it, the grout is pressurized and injected step by step (step-up) in order from the tip (FIG. 10). B). At this time, the packer 110 is positioned near the gap 60 and supplies the grout only below the gap 60. FIG. 10 shows before (A) and after (B) injection of grout.

  After the grout is injected below the gap 60, the position of the packer 110 is moved above the gap 60 (A in FIG. 11), and the grout is injected under pressure and injected into the gap 60 (B in FIG. 11). FIG. 11 shows this state. Then, the hardening of the grout is awaited (step f in FIG. 17, curing), and when it is cured, the upper jig 100 and the like are removed (step g in FIG. 17). FIG. 12 shows this state.

  18 to 21 illustrate an embodiment in which fillers are sequentially injected from the bottom (step injection). In this embodiment, a packer 150 that can be fixed at an arbitrary position by a pressure of a system different from the filler is used. Use. The packer 150 has an expandable rubber body 152 at the center thereof, and the rubber body 152 is expanded by water pressure or air pressure guided by a pressure tube 154 of a system different from the filler, so that an arbitrary position of the injection pipe 34 is obtained. It can be firmly fixed to. The packer 150 is formed with a filler passage 156 penetrating vertically.

  18 shows a drilling device for injecting the injection tube. A down-the-hole hammer 160 is connected to the tip of the drilling rod 158 and inserted into the injection tube 20 from above, and the drilling rod 158 is rotated to rotate the drilling hole 34. The injection tube 20 is advanced to a predetermined depth while forming. That is, the diameter-expanding bit 162 is attached to the tip of the down-the-hole hammer 160, and when the drilling rod 158 is rotated in one direction, the diameter-expanding bit 162 expands to excavate the filling layer 4 and the ballast layer 3 and drill the hole 34. Is formed. At this time, the injection pipe 20 is also moved down together with the diameter expanding bit 162. When the drilling rod 158 is reversed when the drilling rod is lowered to a predetermined depth, the diameter expanding bit 162 is reduced in diameter so that the drilling rod 158 and the drilling bit 162 can be extracted upward, and the injection tube 20 is inserted into the drilling hole 34. Can be installed.

  Here, a large number of small holes 164 are formed in the injection tube 20, and a check valve 166 is attached to each small hole 164. The check valve 166 is configured by a valve plate made of hard rubber or the like fitted into a small hole 164 provided in the pipe wall of the injection pipe 20 from the outside of the pipe wall, and when the pipe internal pressure (filler pressure) becomes a predetermined pressure. The valve plate is pushed out of the pipe wall and opened. As the drill bit 162 enters, the shavings (milled powder) that the drill bit 162 scrapes the filling layer 3 and the ballast 4 rises through the gap between the injection tube 20 and the drill hole 34, so that the shavings are This is for preventing the injection tube 20 from entering or closing the small hole 164.

  In this embodiment, the packer 150 is inserted into the injection tube 20 (step A in FIG. 21) and positioned at a predetermined height below the gap 60 shown in FIG. 9 (see FIG. 20A). Then, the rubber body 152 is expanded and fixed by supplying water pressure or air pressure to the pressurizing tube 154 (see FIG. 20B, step a in FIG. 21). Then, a grout material, which is the first filler, is injected into the filler passage 156 from above (from outside) (step c), and the filler is injected through the packer 15 and below. If the injection pressure of the filler is increased to a predetermined pressure, the check valve 166 below the packer 150 opens and the filler flows out of the injection pipe 20, that is, into the gap between the injection pipe 20 and the drilling hole 34. This filler is injected into the ballast 3 to firmly solidify the portion supporting the filling layer 4 and improve the ground.

  When the injection of the predetermined amount of filler is completed, the pressure is released from the pressure tube 154, the rubber body 152 is contracted, and the packer 150 is moved above the gap 60 (step D). Then, after the packer 150 is expanded and fixed again (step (e)), a fillcon material as the second filler is injected and flows into the gap 60 (step (f)). For this reason, it is possible to prevent the filler from leaking (leakage) to an extra portion and to leave a necessary portion uninjected, thereby reliably and effectively lifting up. When the injection is completed, the pressure is released from the pressure tube 154, and the packer 150 is extracted from the injection tube 20 (step K), or the filler material is additionally injected to the upper end opening of the injection tube 20 while moving the packer 150 upward. (Process K).

  In this embodiment, as described above, the grouting pressure is adjusted in stages while being adjusted. Therefore, the packer 150 can be pressurized and expanded separately from the grout injection pressure at this time, so that the packer 150 can be prevented from losing and moving due to the grout pressure. Can be performed.

  FIG. 22 shows the track correction of the concrete slab track. In this figure, reference numeral 200 denotes a concrete roadbed, 202 denotes a concrete slab placed thereon, and a filler 204 such as asphalt resin is filled therebetween. The track 206 is fixed to the upper surface of the concrete slab 202 by a fastener (not shown). The height of the track 206 is set by adjusting the thickness of the filler 204.

  Reference numeral 208 denotes an upper jig, which has a pair of left and right lower jacks 210 and a beam portion 214 spanned through an upper jack 212 on the upper end of the lower jack 210. The lower jack 210 and the upper jack 212 serve as a support portion that supports the beam portion 214. The lower jack 210 includes four feed screws, and the lower ends of the lower jacks 210 are supported by the concrete roadbed 200. The upper jack 212 is a hydraulic type, and the height of the beam portion 214 can be finely adjusted by hydraulic pressure.

  The beam portion 214 is made of a fiber reinforced resin such as FRP and is curved so that the center becomes higher. Below the beam 214, there are small beams 216 and 216 straddling the left and right tracks 206 and 206, and the upper ends of the anchors 218 and 218 are held at both ends of the small beams 216 and 216, respectively. At the lower ends of the anchors 218, 218, inverted saddle-shaped (cup-shaped) suction portions 220, 220 are fixed, and the suction portions 220, 220 are vacuum-sucked on the upper surface of the concrete slab 202. A vacuum pump is connected to the adsorbing portions 220 and 220, but the evacuation system is omitted here. Adsorption can be released by introducing air into the adsorption unit 220.

  The centers of the small beams 216 and 216 are connected to the beam portion 214 by connecting rods 222 and 222. That is, the connecting rods 222 and 222 have an upper portion that penetrates the beam portion 214 from below and a nut that is threaded from above, and a lower portion that penetrates the small beams 216 and 216 downward and are nut-threaded. Therefore, the height of the small beam 216 can be adjusted by adjusting the distance between the beam portion 214 and the small beam 216 with these nuts.

  When the beam portion 214 is pulled up using the lower jack 210 and the upper jack 212, the small beam 216 connected thereto is raised, and an upward force is applied to the anchor 218 connected to the small beam 216. Since the lower end of the anchor 218 is fixed to the concrete slab 202 by the adsorption part 220, the concrete slab 202 is eventually pulled upward. In this way, the trajectory error of the trajectory 206 is corrected. At this time, since the distance between the concrete slab 202 and the concrete roadbed 200 changes, the filler 204 is peeled off from the concrete slab 202 or the concrete roadbed 200.

  Therefore, a new filler may be injected into this gap. For example, the filler may be injected after measures are taken so that the outer periphery of the concrete slab 202 is surrounded by a mold or the filler to be injected after filling with another sealing material is prevented from flowing out. At this time, if the height is fixed using a wedge or the like in the gap, the upper jig 208 can be removed and used for work in another place, so that work efficiency is improved.

  In this embodiment, since the anchors 218 are arranged on both sides of each track 206, the track misalignment can be performed separately for each of the left and right tracks 206, which is suitable for correcting the track misalignment with high accuracy.

1,206 Track (rail)
2 Sleeper 3 Ballast 4 Filling layer 10, 100, 208 Raising jig 12, 102 Supporting part 14, 104, 214 Beam part 16, 210 Lower jack 18 Anchor fixing part 20 Steel pipe (pile) which is an injection pipe for filling material injection
28, 218 Anchor 34 Injection hole insertion hole 42, 212 Upper jack 60 Gap 102 Support part 104 Shape steel (beam part)
108 Nut ring of lower jack 110, 150 Packer 164 Small hole 166 Check valve

Claims (13)

In the labor-saving track orbit repair method of the structure that consolidated ballast and sleepers,
a) installing a plurality of lift-up anchors on the upper surface of the filling layer in which the sleeper tree and ballast are hardened;
b) installing a portal-type rising jig that is supported at both ends by the ballast layer outside the filling layer and traverses the track and the anchor;
c) The anchor is lifted up by a jack provided on the upper jig, and the orbital height is finely adjusted by lifting the filling layer from the ballast;
d) filling the gap formed between the ballast and the filling layer with a filler;
A method of repairing the track error of the labor-saving track having the above steps.   2. The labor saving according to claim 1, wherein the anchor is detachably fixed to an anchor fixing portion in which an adhesive anchor is fixed to an anchor hole drilled in a filling layer, and a protective cover is detachable to the anchor hole in a state where the anchor is removed. How to repair the track error.   3. The track error correcting method for a labor-saving track according to claim 1 or 2, wherein the anchor and the anchor fixing portion are provided at a plurality of locations between the outside of the track and the track on a straight line in the traverse direction.   The upper jig includes a pair of support portions, a beam portion spanned between both support portions, and a lower jack for adjusting the height of the beam portion provided on both support portions, and in the step b), 2. The track error correcting method for a labor-saving track according to claim 1, wherein the height of the anchor is roughly adjusted by a lower jack, and the track height is finely adjusted by an upper jack for fine adjustment held in the beam portion in the step c).   The method for repairing a track error of a labor-saving track according to claim 4, wherein the lower jack and the upper jack are hydraulic jacks. In step a), an anchor is installed in the filling layer, and an injection pipe that penetrates the filling layer and reaches the ballast and the lower ground bed is installed.
In step d), the labor-saving trajectory repair method of the labor-saving trajectory according to claim 1, wherein a gap and a filler are injected from the injection pipe into the gap and below the gap.   The injection pipe is a steel pipe inserted into a drilling hole formed by a drilling machine and formed with a large number of small holes, and a protective lid is detachable at the upper end opening thereof. Method.   The method of repairing a track error in a labor-saving track according to claim 7, wherein a check valve is attached to the small hole to prevent swarf and filler during the formation of the hole from entering the injection pipe.   In the injection tube, a packer is inserted in the middle of the injection tube, the fixing position of which is variable and the filler can pass through. The filler is injected below through the packer while the packer is fixed below the gap. 8. The method of repairing a track error of a labor-saving track according to claim 7, wherein after the packer is moved and fixed above the gap, the filler is injected into the gap.   The anchor fixing part inserts the adhesive anchor into the drilling hole, and drives the fixed anchor rod by destroying the container of the adhesive anchor by driving all screws or deformed steel bars with a sharpened tip into it. 3. The track of the labor-saving track according to claim 2, wherein the whole screw fixed here or the detachable long screw screwed into the connection nut for lift-up fixed to the upper end of the deformed steel bar is used as an anchor. Crazy repair method. In the method of repairing the track deviation of the slab track with the track fixed to the concrete slab,
a ') installing a plurality of lift-up anchors on the upper surface of the concrete slab;
b ') installing a portal-type uplifting jig that is supported by the roadbed outside the concrete slab and that crosses the track and the anchor;
c ′) The anchor is lifted by a jack provided on the upper jig, and the concrete slab is lifted from the roadbed to finely adjust the track height;
d ') Filling the gap created between the roadbed and the concrete slab;
A method for repairing a slab track trajectory that has the above steps.   12. The method of repairing a slab track trajectory error according to claim 11, wherein the anchor is a vacuum chuck adsorbed on the slab surface.   The slab according to claim 11, wherein a plurality of the raising machines are installed at predetermined intervals in the track length direction with respect to one concrete slab, and these are driven synchronously so that one whole concrete slab is simultaneously raised. How to repair the track error.