KR101531358B1 - Settlement restoration apparatus of concrete track - Google Patents

Abstract

Disclosed is a settlement restoration device for a concrete track capable of restoring a settled concrete track by lifting the concrete track to the roadbed. The present invention is to restore the settlement of a base layer constructed on the roadbed and the concrete track constructed on the base layer. According to the present invention, the settlement restoration device comprises: a plurality of flat jacks to form a space between the roadbed and the base layer by lifting the base layer and the concrete track; a liquid supply device connected to the flat jacks to inject and discharge liquid; a water-level recorder to detect the height of the concrete track; a grouting device to charge the space with grout; and a controller to control the operation of the liquid supply device and the grouting device according to a signal received from the water-level recorder. The present invention can conveniently and accurately restore the height of the concrete track by grouting after lifting the base layer and the concrete track from the roadbed using the flat jacks installed between the roadbed and the base layer and supporting the base layer with a variable pad.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a concrete settlement restraint apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a settlement restoration apparatus for a concrete track, and more particularly, to a settlement restoration apparatus for a concrete track for lifting and recovering a subsumed concrete track from a bedrock.

Concrete track is much larger than ballasted track because of the burden and resistance, so track irregularity hardly occurs, which can greatly reduce maintenance costs. In addition, the concrete track maintains a good linearity, and thus it has a high driving stability of the vehicle even at high speed and high density running lines, and has the advantage of providing a good ride feeling to the passenger. Thus, the concrete track is considered to be advantageous in terms of stability of travel, ride comfort and life cycle cost (LCC), and is becoming an alternative system that can compensate for the disadvantages of the conventional gravel trajectory. In the world, the installation of concrete track is becoming common in the stiffness slope part, and the case of laying the concrete track on the soft roadbed slope is increasing.

On the other hand, unlike the gravel trajectory, the concrete track is difficult to dismantle and dismantle, and it takes much time, so it is not easy to recover the track if local settlement occurs on the roadbed. In order to apply the concrete track in the earth section, it is most important to maintain the stability of the vehicle and the orbit by maintaining the settlement of the roadbed within a certain level, and to reduce the maintenance effort. Concrete orbit, unlike gravel trajectory, has a large deterioration in usability of orbit and settlement is very limited, so settlement should be strictly limited in the long term in order to lay on the earth section. Therefore, it is necessary to provide reasonable measures to suppress the level of maintenance of the track in the construction and operation of the concrete track. It is stipulated that maintenance is required when the settlement of the roadbed is 10 mm or more.

Even if the quality of the construction is secured enough, the concrete track constructed on the earthwork roadbed will inevitably suffer some settlement after a long period of time. Due to the characteristics of the earth-roadbed, once the construction is completed, there is no change in the special load condition, so the safety factor for the settlement increases. Therefore, the problem of stability can be excluded, but it is realistic to completely suppress the settlement it's difficult. Therefore, even if the soft ground treatment is perfect, appropriate maintenance measures should be established for the long-term settlement measures of the embankment and paperboard due to the soil mechanics.

Korean Patent No. 10-1222151 entitled " Packer capable of controlling injection direction and depressed road repair method using the same, "and Korean Patent No. 10-0368902 entitled" Method for Restoring Unequal Deposition Structure by Multi-Point Injection " A technique of forcibly injecting a cement paste or the like into a subsidence ground is disclosed. In the restoration method of the settlement structure of the patent documents, after a hole is made in the structure and the ground, a pipe such as a packer is inserted into the hole, and the cement paste is injected into the subsidence ground through the pipe to restore the settlement of the structure.

However, in the conventional method for restoring the submerged structure as described above, since holes are formed in various places of the structure and cement paste is injected into the submerged ground, there is a problem that the working time becomes long. Especially, since the operation of the train is not stopped for maintenance of the concrete track, the settlement restoration work of the concrete track should be carried out within a limited time of the train stoppage time, that is, 2 to 3 hours at night. Therefore, it is difficult to complete the restoration work of the concrete track in one day. Therefore, the work restoration work is divided into stages by increasing the working days. In addition, the holes in the concrete track reduce the strength and cause cracks and fatigue failure of the concrete track in the long term.

On the other hand, when the cement paste injected into various places of the settlement ground is excessively injected into one place, there is a problem that the structure, that is, the concrete track is locally raised. This local rise of the concrete track lowers the running safety of the train.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the restoration method of the conventional settlement structure. SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of restoring a concrete track that can easily and accurately restore the height of a concrete track by lifting a base layer and a concrete track subducted by a flat jack, Device.

Another object of the present invention is to improve the efficiency and uniformity of grouting since the grouting is performed in a state in which the injection pipe is fitted in the space between the roadbed and the base layer on both sides of the concrete track, So that the damage can be minimized.

It is still another object of the present invention to provide a settlement restoration apparatus for a concrete track capable of quickly and accurately performing a series of settlement restoration operations, thereby minimizing the operation interruption of a train.

According to an aspect of the present invention, there is provided an apparatus for restoring settlement of a concrete track. The apparatus for restoring settlement of a concrete track according to the present invention is a device for restoring a subsidence of a concrete track installed on a roadbed and a base layer applied to a roadbed, A plurality of flat jacks for lifting a concrete track and a base layer by injection of a liquid to form a space between the bedplate and the base layer; A liquid supply device connected to each of the plurality of flat jacks for injecting and discharging liquid; A water level meter installed on the upper surface of the concrete track so as to detect the height of the concrete track; A grouting device for injecting grout into the space to charge the grout; And a controller for controlling the operation of the liquid supply device and the grouting device according to a signal input from the water level meter. The water level meter comprises: a water tank for storing water; A plurality of water tubs disposed on the upper surface of the concrete track and having a gap connected to the upper end so as to cover the water tub and the water receiving chamber communicated by the water reservoir and the water supply pipeline; A plurality of stands disposed on the upper surface of the concrete track so as to be adjacent to each of the plurality of water tubs; A plurality of floats suspended on the water surface of water stored in the water receiving chambers of each of the plurality of water tubs and coupled to each of the plurality of stands; A first hall sensor connected to the controller and mounted to each of the plurality of water tanks, and a plurality of first sensing units having a magnet mounted on each of the plurality of floats so that the first hall sensor can sense do. The controller is configured to output a control signal for injecting the liquid by the operation of the liquid supply device when the first Hall sensor outputs a signal that the first magnet is separated from the first magnet, And outputs a control signal for shutting off the injection of the liquid by the operation of the liquid supply device when the signal is outputted.

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The apparatus for restoring settlement of a concrete track according to the present invention is characterized in that a flat jack is provided between a roadbed and a base layer, a base layer and a concrete track are lifted from the roadbed by a flat jack, The height of the concrete track can be restored easily and accurately. In addition, since the grouting is performed in a state where the jetting pipe is fitted in the space between the bedrock and the bedrock where the flat jack lifts the both sides of the concrete track, the efficiency and uniformity of grouting can be improved, and the concrete for grouting It is unnecessary to drill the orbit and the damage can be minimized. Therefore, it is possible to reduce the operation time by performing a series of settlement restoration operations quickly and accurately, thereby minimizing the interruption of the train operation and efficiently performing the restoration work within a limited time period when the train is stopped at night There is a useful effect that can be done.

1 is a sectional view showing an example of a concrete track to which a settlement restoration apparatus according to the present invention is applied.
2 is a plan view schematically showing a state in which a settlement restoration apparatus according to the present invention is installed in a concrete track.
FIG. 3 is a schematic view for explaining the installation of a simple rate in a concrete track or a ground which is settled in the settlement restoration apparatus according to the present invention.
4 is a view showing a configuration of a flat jack and a liquid supply device in the settlement restoration apparatus according to the present invention.
5 is a cross-sectional view illustrating the operation of the flat jack in the settlement restoration apparatus according to the present invention.
6 is a schematic view for explaining an installation state of the water level gauge in the settlement restoration apparatus according to the present invention.
7 is a view for explaining the construction of a water level meter in the settlement restoration apparatus according to the present invention.
8 is a view illustrating the operation of the water level meter in the settlement restoration apparatus according to the present invention.
9 is a block diagram illustrating control of the settlement restoration apparatus according to the present invention.
10 is a plan view showing the configuration of the grouting apparatus in the settlement restoration apparatus according to the present invention.
11 is a view for explaining an installation state of a meter in the settlement restoration apparatus according to the present invention.
FIG. 12 is a view for explaining a simplex removal state in the settlement restoration apparatus according to the present invention.
13 is a view for explaining a settlement restoration method by the settlement restoration apparatus according to the present invention.
14 is a view for explaining grouting in the settlement restoration method by the settlement restoration apparatus according to the present invention.
15 is a view for explaining another embodiment of the settlement restoration method by the settlement restoration apparatus according to the present invention.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments with reference to the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a settlement restoration apparatus for a concrete track according to the present invention will be described in detail with reference to the accompanying drawings.

1 and 2, a concrete track 10 to which a settlement restoration apparatus according to the present invention is applied includes a lateral direction X and a longitudinal direction Y for constructing a railway. The concrete track 10 is installed at intervals by fastening a plurality of rail fastening devices 14 on a top surface of a PC slab 12 and a precast concrete slab 12 And a pair of rails (16) which are formed on the base. The concrete track 10 is also referred to as a concrete slab track, and the PC slab 12 is also referred to as a PC slab track (Precast concrete slab track).

The concrete track 10 is installed on the upper surface of a hydraulically stabilized base course (HBS) 22 as a base course 20. The vacant concrete concrete base layer (22) is a base layer stabilized by using lean concrete using less cement on the roadbed (30). The concrete track 10 in this specification includes a track concrete layer (TCL) applied to the vacant concrete concrete base layer 22. The railway is constructed by installing a concrete sleeper and a rail on the upper surface of the road concrete layer.

As shown in FIG. 3A, when the bedrock 30 is settled, a track irregularity occurs in the concrete track 10. 3 (b), when the track error of the concrete track 10 is generated, the PC slab 12 is moved for temporary operation of the train in accordance with the degree of track misalignment, that is, The height of the rails 16 is adjusted by inserting one or more shim plates 40 between the upper surface of the rails 16 and the lower surface of the rail fastening device 14. The shim pad 40 is also called a shim pad and is made of various materials such as metal, plastic, and rubber.

Referring to FIGS. 2, 4, 5, 13 and 15, an apparatus 100 for recovering a concrete track of concrete according to the present invention includes lifting a concrete track 10 from a bedrock 30, A plurality of flat jacks 110 (110-1, 110-1, ..., 110-n) The flat jacks (110) are installed between the bedrock (30) and the redundant concrete base layer (22). The flat jacks 110 have capsules 112 that expand by the injection of liquid. The capsule 112 includes a hollow toroidal rim 114 and a pair of flat plates Plat extending from the top and bottom of the rim 112 to form a chamber 116, An inlet pipe 120 connected to the rim 112 for injecting the liquid and an outlet pipe 122 connected to the rim 112 for discharging the liquid, Respectively.

The capsule 112 is made of mild steel so as to be expanded by internal pressure. A pair of thrust plates 124 are mounted on the outer surfaces of the flats 118. The thrust plates 124 are made of hard steel. In FIG. 4, the flat jack 110 is shown as being formed in a circular shape, but this is an example, and the flat jack 110 may be formed in a rectangular shape. In addition, the thrust plate 124 may be formed of a concrete block as required. The capsule 112 is insert molded into a concrete block.

4, an apparatus 100 for recovering settlement of a concrete track according to the present invention includes a liquid supply device 130 for injecting a liquid 132 into a chamber 116 of each of the flat jacks 110 Respectively. The liquid supply device 130 includes a reservoir 134 for storing the liquid 132, a liquid supply pipeline 136 connected between the inlet pipe 120 and the reservoir 134, a reservoir 134 connected to the reservoir 134, A liquid supply pump 138 mounted on the liquid supply pipeline 136 for pumping and supplying the liquid 132 from the liquid supply pipeline 136 to the liquid supply pipeline 136, And a first valve device (140) mounted to control the valve mechanism. The liquid 132 may be composed of various materials such as water, hydraulic oil, grout, epoxy resin, and the like. In this embodiment, the flat jacks 110 are left unremoved after the settlement restoration.

The liquid supply pipeline 136 may be configured as a flexible hose for ease of piping. The liquid supply pipeline 136 is connected to the main supply pipeline 136a connected to the liquid supply pump 138 and the main supply pipeline 136a branched from the main supply pipeline 136a, And a plurality of branch supply pipelines (136b) connected to the plurality of branch supply pipelines (120). Each of the branch supply pipelines 136b may be connected to the main supply pipeline 136b by a manifold. The first valve device 140 is composed of a plurality of first solenoid valves 142 (142-1, ..., 142-n) mounted on each of the branch supply pipelines 136b. In other embodiments, the first solenoid valves 142 may be mounted to the inlet tube 120. In addition, the first valve device 140 may comprise a plurality of manual valves mounted on each of the branch supply pipelines 136b.

The liquid supply device 130 includes a liquid return pipeline (not shown) that is connected between the discharge pipe 122 and the reservoir 134 to discharge the liquid 132 from the chamber 116 of each of the flat jacks 110. [ : 144). A liquid return pump 146 and a second valve device 148, respectively, are mounted on the liquid return pipeline 144. The liquid return pipeline 144 may comprise a flexible hose. The liquid return pipeline 144 is branched from the main return pipeline 144a connected to the liquid return pump 146 and connected to the discharge pipe 122 of each of the flat jacks 110. [ And a plurality of branch return pipelines 144b. Each of the branch return pipelines 144b may be connected to the main return pipeline 144b by a manifold. The second valve device 148 is constituted by a plurality of second solenoid valves 150 (150-1, ..., 150-n) mounted on each of the branch return pipes 144b. In another embodiment, the second solenoid valves 150 may be mounted to the discharge tube 122.

2, 13 and 14, an apparatus 100 for recovering a settlement of a concrete track according to the present invention includes a bedrock 30 for supporting a vacant concrete concrete base layer 22 lifted by flat jacks 110, And a plurality of adjustable pads (160; 160-1, 160-2, and 160-3) installed in a space 50 between the exposed concrete base layer 22 and the redundant concrete base layer 22. The variable pads 160 may be spaced on both sides of each of the flat jacks 110 so as to stably support the vacant concrete concrete base layer 22. The variable pads 160 may be stacked according to the height of the space 50. In some embodiments, the variable pads 160 may be replaced by concrete blocks, metal plates, or the like.

6 to 8, an apparatus 100 for recovering settlement of a concrete track according to the present invention includes a water level meter 170 for detecting the height of a concrete track 10. The water gauge 170 includes a water reservoir 174 for storing water 172, a plurality of water tanks 176, 176-1, ... 176-n, a plurality of floats 178, And a plurality of second sensing units 182 (182-1, ..., 182-n). The sensing units 180-1 to 180- The water storage tank 174 and the water tank 176 are connected by a water supply pipeline 184. The water 172 is supplied from the water storage tank 174 to each of the water tubs 176. The water supply pipe 174a, the drain pipe 174b and the overflow pipe 174c are connected to the water storage tank 174, respectively.

Each of the water tubs 176 is set on the upper surface of the concrete track 10 where settlement is occurring. The water receiving chamber 176a of each of the water tubs 176 is closed by a cap 176b. A hole 176c is formed at the center of the cap 176b. Each of the floats 178 floats on the water surface of the water 172 stored in the water receiving chamber 176b. A guide bar 178a extends on the upper surface of each of the floats 178. The guide bar 178a is fitted in the hole 176c so as to be movable up and down, and guides the float 178 up and down.

Each of the first sensing units 180 and the second sensing units 182 detects the rise of each of the water tubs 176. The first sensing units 180 are composed of a clamp 180a, a first hall sensor 180b and a first magnet 180c. The clamp 180a is coupled to the outer surface of the water tub 176 so as to be adjustable in position. The first Hall sensor 180b is mounted on one side of the clamp 180a. The first magnet 180c is mounted on one side of the float 178 so that the first magnet 180c can be sensed by the first hall sensor 180b. The second sensing units 182 are composed of a second hall sensor 182a and a second magnet 182b. The first Hall sensor 180b is configured to output an On signal when it is apart from the first magnet 180c and to output an Off signal when it is in proximity to the first magnet 180c have.

The second hall sensor 182a is mounted on the other side of the clamp 180a so as to be disposed opposite to the first hall sensor 180b. The second magnet 182b is mounted on the other side of the float 178 so that it can be sensed by the second hall sensor 182a. The second Hall sensor 182a is configured to output an OFF signal when it is apart from the second magnet 182b and to output an ON signal when it is in proximity to the second magnet 182b. In some embodiments, each of the first and second sensing units 180, 182 of the water level meter 170 detects the rise of the water tubs 176 instead of the first and second Hall sensors 180b, 182a An ultrasonic sensor, a capacitive sensor, a limit switch, and the like.

9, an apparatus 100 for recovering settlement of a concrete track according to the present invention includes a first hall sensor 180b of a first sensing unit 180 (180-1, ..., 180-n) The liquid return pump 146, the first and second solenoid valves 182-1, 182-1, ..., and 182-n in accordance with signals input from the second hall sensors 182a of the respective liquid supply pumps 138, (Controller) 190 for controlling the operation of the switches 142 and 150. The controller 190 is connected to the liquid supply pump 138, the liquid return pump 146, the first and second solenoid valves 132 and 150, and the first and second sensing units 180 and 182, respectively have.

2 and 10, an apparatus 100 for recovering settlement of a concrete track according to the present invention includes a space (not shown) formed between a bedrock 30 and a vacant concrete concrete base layer 22 by lifting of flat jacks 110 A grouting device 200 for injecting grout 202, for example, cement paste, non-shrink mortar or the like, The grouting apparatus 200 includes a tank 204 storing a grout 202, a grout supply pipeline 206, a grout supply pump 208 and a plurality of spray pipes 210 210-1, 210-n.

The grout supply pipeline 206 is connected between the tank 204 and the spray pipes 210 to supply the grout 202. A known valve device, a flow meter, a pressure gauge, and the like for controlling the supply of the grout 202 are mounted on the grout supply pipeline 206. The grout feed pump 208 is mounted in the grout feed pipeline 206 to pump the grout 202 from the tank 204. The grout supply pump 208 may be connected to the controller 190 to be controlled by the operation of the controller 190. The injection pipes 210 are fitted in the space 50 along the longitudinal direction Y on both sides of the concrete track 10. A plurality of injection holes 210a are formed on the outer surfaces of the injection pipes 210 for injection of the grout 202. [

As shown in FIGS. 2 and 9, a settlement restoration apparatus 100 for a concrete track according to the present invention includes a plurality (100) of concrete pavements 10 spaced from each other along a lateral direction X at the center of the upper surface of a concrete track 10 220-1, ..., 220-n of the vibration generators 220, 220, ..., 220-n. The vibrations generated by the operation of the vibration generators 220 are transmitted to the grout 202 through the concrete track 10 and the vacant concrete concrete base layer 22 and into the space 50 between the bed floor 30 and the vacant concrete concrete base 22 . Therefore, the grout 202 is uniformly filled in the space 50.

Hereinafter, a settlement restoration method by a settlement restoration apparatus for a concrete track according to the present invention will be described.

3, when the settlement of the concrete track 10 and the redundant concrete base layer 22 occurs due to the settlement of the bedrock 30, the worker moves the rail 16 and the rail fastening device 14, The shim plates 40 are installed between the shafts 40 to support the rails 16. The installation of the simplexes 40 compensates for the misalignment of the rails 16, thereby enabling the temporary operation of the train.

Referring to FIG. 11, the operator calculates the settlement restoration height of the concrete track 10, that is, the settlement amount of the bedrock 30, in order to perform the settlement restoration work of the concrete track 10 when the train is stopped. The worker horizontally installs a jig 230 on the upper portions of the rail fastening devices 14 disposed before and after the settlement restoration section. A plurality of meters 232 are installed on the upper surface of the jig 230 to measure the height of the jig 230 and calculate the settlement restoration height of the concrete track 10 by the measured value from the meter 232. The settlement restoration height of the concrete track 10 is obtained by correcting the warp and weft. The meter 232 may be a laser level machine. The receiver of the laser level machine can be mounted on the jig 230. In some embodiments, the meter 232 may be mounted on the rails 16. On the other hand, the settlement restoration height of the concrete track 10 in the settlement restoration section can be displayed by a laser beam, a steel wire, or the like so that the worker can visually confirm it.

6 to 8, a worker calculates a settlement restoration height of the concrete track 10, and then installs a water level meter 170 on the upper surface of the concrete track 10. Each of the water tubs 176 is vertically installed on the upper surface of the concrete track 10 where the settlement is occurring along the lateral direction X at intervals. The water in the water storage tank 174 is supplied to the water receiving chamber 176a of each of the water tubs 176 through the water supply pipeline 184. When water is supplied to the water receiving chamber 176a, the float 178 floats on the water surface.

As shown in Figs. 6 and 8 (a), the water level of each of the water tubs 176 coincides with any horizontal reference line 240. The horizontal reference line 240 is disposed higher than the line baseline 242 on which the upper surfaces of the rails 16 are to be aligned. The water levels of the water tubs 176 are adjusted by adjusting the water level of the water storage tank 174 so that the first hall sensor 180b and the first magnet 180b of each of the first sensing units 180 So that the height difference H of the concrete track 180c is the settlement amount of the concrete track 10, that is, the settlement restoration amount. The water level of the water storage tank 174 can be easily adjusted by supplying the water 172 through the water supply pipe 174a and draining the water 172 through the drain pipe 174b.

As shown in Figs. 2, 11 and 13A, when the installation of the water level meter 170 is completed, the worker moves the platform 30 A plurality of holes 32 are drilled along the longitudinal direction X of the concrete track 10 between the concrete foundation layer 22 and the redundant concrete base layer 22. The holes 32 are excavated from both sides of the concrete track 10 toward the center. The operator installs the flat jacks (110) in each of the holes (32). Each of the thrust plates 124 is supported by a bedrock 30 and a redundant concrete base layer 22. At this time, the operator can perform the excavation work of the hole 32 and the excavation work of the hole for installing the spray pipe 210 in order to speed up the settlement restoration work, and the spray pipe 210 can be installed in the hole.

As shown in Figs. 4, 5 and 13 (b), when each of the flat jacks 110 is provided with the holes 32, the liquid supply pump 138 of the liquid supply device 130 is operated Thereby injecting the liquid 132 into the chamber 116 of each of the flat jacks 110. When each of the first solenoid valves 142 is opened and the liquid supply pump 138 is operated with each of the second solenoid valves 150 being closed, the liquid 132 pumped from the reservoir 134 is supplied to the liquid supply pipe 138. [ And is injected into the chamber 116 along line 136. When the liquid 132 is injected into the chamber 116, the flats 118 are inflated by the pressure of the liquid 132. The flats 118 are inflated to lift the absent concrete concrete base layer 22 from the bedrock 30. When the vacant concrete concrete base layer 22 is lifted, a space 50 is formed between the bed floor 30 and the vacant concrete concrete base layer 22.

 13 (c), after the vacant concrete concrete base layer 22 is lifted by the operation of the flat jacks 110, the worker moves the space between the bed floor 30 and the vacant concrete concrete base layer 22 A plurality of variable pads 160-1 are installed in the support frame 50 to support the redundant concrete base layer 22. At this time, the variable pads 160-1 are disposed on both sides of the flat jacks 110. [ 13 (d), when the installation of the variable pads 160-1 is completed, the liquid 132 which has been injected into the chamber 116 of the flat jacks 110 is discharged to the flat jacks 110 ).

Referring to FIG. 12, when the simplexes 40 supporting the rails 16 are removed after the variable pads 160-1 are installed, a track misalignment of the rails 16 occurs. At this time, since the settlement of the concrete track 10 is restored by the installation of the variable pads 160-1, the amount of the track misalignment of the rails 16 is temporarily within the range possible to operate the train.

Next, as shown in FIGS. 13E to 13G, when the flat jacks 110 are restored, the second variable pads 160-2 are installed on the flat jacks 110, And supports the base layer 22. The vacant concrete concrete base layer 22 is lifted again by the operation of the flat jack 110 to form an additional space 50 and a plurality of third variable pads 160-3 are added on the variable pads 160-1 So as to support the vacant concrete concrete base layer 22. As shown in FIGS. 13 (h) and 13 (i), the flat jacks 110 remove the second liquid pervious 160-2 after discharging and reintroducing the liquid 132 which has been injected. In this embodiment, the number of lifting of the concrete track 10 by the flat jacks 110 and the variable pads 160 is determined by the settlement restoration amount.

Finally, as shown in FIG. 13 (j) and FIG. 14, grout (not shown) is inserted into the space 50 between the bedrock 30 and the redundant concrete base layer 22 supported by the variable pads 160 202 are grouted to form the grout layer 60. [ When the grout supply pump 208 of the grouting device 200 is operated, the grout 202 stored in the tank 204 is pumped and supplied to each of the spray pipes 210 through the grout supply pipeline 206 . The grout 202 is uniformly injected into the space 50 through the injection holes 212 of each of the injection pipes 210 and charged. The operator can easily visually confirm the grouting state of the grout 202 filled through the observation holes 18 shown in Figs. 2 and 14 (b). The operator forms the observation holes 18 so as to penetrate the concrete track 10 and the vacant concrete concrete base layer 22 along the lateral direction X at the center of the upper surface of the concrete track 10 before grouting. When the grouting of the grout 202 is completed, the operator can clean the spray pipes 210 by supplying water, air, or the like to the spray pipes 210 by the operation of the grouting device 200. The observation holes 18 can be easily filled with the cement mortar.

4, 8 and 9, the controller 190 includes a first sensing unit 180 (180-1, ..., 180-n) and a second sensing unit 182 (182-1, ..., 182 110-1, ..., 110-n according to a signal input from each of the plurality of flat jacks 110-1, 110-2, ..., 110-n. When the concrete track 10 is lifted by the operation of the flat jacks 110, 110-1, ..., 110-n as shown in Figure 8 (b), the water tubs 176 (176-1, ..., 176-n are raised together with the concrete track 10, the water level of the water tubs 176 (176-1, ..., 176-n) becomes lower. The water stored in the water receiving chamber 176a of the water tub 176-1 is discharged to the water storage tank 174 through the water supply pipeline 184 when the first water tank 176-1 is raised. When the water level of the water tank 174 becomes high, the water is drained through the overflow pipe 174c to make the water level of the water tank 174 and the water tank 176 (176-1, ..., 176-n) constant. The first hall sensor 180b of the first sensing unit 180-1 senses the first magnet 180b by the rise of the first tank 176-1 and outputs an off signal. The controller 190 closes the first first solenoid valve 142-1 according to the off signal of the first hall sensor 180b to block the injection of the liquid to the first flat jack 110-1. Thus, the height of the concrete track 10, that is, the restoration amount of the settlement by the operation of the flat jacks 110 (110-1, ..., 110-n) can be accurately controlled.

As shown in FIG. 8C, when the first water tub 176-1 is raised excessively in accordance with the rise of the concrete track 10, the first sensing unit 182-1 The two-hole sensor 182a senses the second magnet 182b and outputs an ON signal. The controller 190 opens the first second solenoid valve 150-1 according to the ON signal of the second Hall sensor 182a. The liquid return pump 146 is operated under the control of the controller 190 to discharge the liquid 132 injected into the chamber 116 of the first flat jack 110-1. When the first hall sensor 180b of the first first sensing unit 180-1 senses the first magnet 180b in the process of restoring the first flat jack 110-1, The liquid return pump 146 is stopped and the first second solenoid valve 150-1 is closed. Thus, the lifting of the concrete track 10 by the operation of the flat jacks 110 (110-1, ..., 110-n) is accurately controlled by the water level meter 170 and the controller 190, Can be improved.

Meanwhile, in the settlement restoration method by the settlement restoration apparatus of the concrete track according to the present invention, the grouting can be repeated once or several times according to the settlement amount of the concrete track 10, the working conditions, and the like. 15, when the settlement amount of the concrete track 10 is large or the operation time is insufficient to perform the settlement restoration work, the worker must perform the operations of the flat jacks 110 and the operation of the variable pads 160, The space 50-1 is formed between the roadbed 30 and the redundant concrete base layer 22. [ As shown in Fig. 15A, grouting is performed by grouting the grout in the space 50-1 by the operation of the grouting apparatus 200 to form the grouting layer 60-1.

Next, as shown in FIGS. 15B and 15C, the second variable pads 160-1 are installed in each of the plurality of restored flat jacks 110, and the redundant concrete base layer A plurality of flat jacks 110 are inflated so as to form an additional space between the grouting layer 60-1 and the grouting layer 60-1 to lift up the vacant concrete concrete base layer 22 and the concrete track 10 again, . A plurality of third variable pads 160-3 are installed in an additional space 50-2 between the redundant concrete base layer 22 and the grouting layer 60-1 to support the foundation layer. At this time, the third variable pads 160-3 are further installed on the variable pads 160-1 buried in the grout layer 60-1. The worker discharges the liquid again injected into each of the flat jacks 110 by the operation of the liquid supply device 130 to restore each of the flat jacks 110 again, The variable pad 160-2 is removed.

Finally, as shown in Fig. 15 (d), grouting is further grouted in the additional space 50-2 by the operation of the grouting device 200 to form the grout layer 60-2. In this way, the settlement restoration method by the settlement restoration apparatus of the concrete track according to the present invention can prevent the concrete track 10 by the flat jacks 110 and the variable pads 160 according to the settlement amount of the concrete track 10, And then performing the settlement restoration work by grouting in a stepwise manner, the settlement restoration work can be performed efficiently.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: Concrete track 20: Base layer
30: bedrock 40: simflate
60: grout layer 110: flat jack
116: chamber 124: thrust plate
130: Liquid supply device 136: Liquid supply pipeline
144: liquid return pipeline 160: variable pads
170: Water gauge 174: Water tank
176: Water tray 178: Float
180: first sensing unit 182: second sensing unit
184: Water supply pipeline 190: Controller
200: grouting device 210:
230: jig 232: instrument

Claims (13)

An apparatus for restoring a subsidence-applied base layer and a subsidence of a concrete track installed in the base layer,
A plurality of flat jacks disposed between the bedrock of the section where settlement occurs and the base layer and lifting the concrete bed and the concrete bed by injecting liquid to form a space between the bedplate and the base layer;
A liquid supply device connected to each of the plurality of flat jacks for injecting and discharging the liquid;
A water level meter installed on an upper surface of the concrete track to detect a height of the concrete track;
A grouting device for injecting and filling grout into the space;
And a controller for controlling operation of the liquid supply device and the grouting device in accordance with a signal input from the water level meter,
The water level meter,
A water storage tank for storing water;
A plurality of water tubs disposed on the upper surface of the concrete track and having a water tub communicating with the water reservoir and a water supply pipeline and a gap coupled to the upper end to cover the water receiving chamber;
A plurality of stands disposed on an upper surface of the concrete track so as to be adjacent to each of the plurality of water tubs;
A plurality of floats suspended on the water surface of water stored in the water receiving chambers of each of the plurality of water tubs and coupled to each of the plurality of stands;
A first hall sensor connected to the controller and mounted to each of the plurality of water tanks, and a plurality of first hall sensors having magnets mounted on each of the plurality of floats so as to be able to sense the first hall sensor Sensing units,
Wherein the controller is configured to output a control signal for injecting the liquid by operation of the liquid supply device when the first hall sensor outputs a signal that the first hall sensor is separated from the first magnet, And outputting a control signal for shutting off the injection of the liquid by the operation of the liquid supply apparatus when the off signal is outputted in the vicinity of the first magnet. The method according to claim 1,
The liquid supply device includes:
A reservoir for storing the liquid;
A liquid supply pipeline connecting each of the plurality of flat jacks and the reservoir for supplying the liquid to each of the plurality of flat jacks;
A liquid supply pump mounted on the liquid supply pipeline for pumping and supplying the liquid stored in the reservoir, the liquid supply pump being connected to the controller to be controlled by a control signal of the controller;
A first valve device mounted on the liquid supply pipeline to control the supply of the liquid;
A liquid return pipeline connecting each of the plurality of flat jacks and the reservoir for discharging the liquid from each of the plurality of flat jacks;
A liquid return pump mounted on the liquid return pipe line for pumping and discharging the liquid injected into each of the plurality of flat jacks, the liquid return pump being connected to the controller to be controlled by a control signal of the controller;
And a second valve device mounted on the liquid return pipe line to control the discharge of the liquid. delete The method according to claim 1,
The water level meter,
A second Hall sensor connected to the controller and mounted on each of the plurality of water tanks, and a plurality of second sensors having magnets mounted on each of the plurality of floats so that the second hall sensor can detect the second Hall sensors. Sensing units,
Wherein the controller is configured to output a control signal for shutting off the discharge of the liquid by the operation of the liquid supply device when the second hall sensor and the second magnet output an OFF signal apart from each other, And outputs a control signal for discharging the liquid by the operation of the liquid supply device when the sensor outputs an ON signal that is close to the second magnet. The method according to claim 1,
Wherein the grouting apparatus has a plurality of spray tubes fitted in the space along the longitudinal direction of the concrete track on both sides of the concrete track, and a plurality of spray holes for spraying the grout on the outer surfaces of the plurality of spray tubes Wherein the restraining device is provided for restoring the settlement of the concrete track. The method according to claim 1,
Further comprising a plurality of vibration generators installed on an upper surface of the concrete track to generate vibration. delete delete delete delete delete delete delete

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