KR20080021964A - System for repairing of bridge structure and method therefor - Google Patents

Abstract

An apparatus and a method for repairing a bridge structure are provided to change lifted capacitance of jack units according to the loads of the bridge by installing a hydraulic pressure control unit between a hydraulic pressure supply unit and a jack unit. An apparatus for repairing a bridge structure comprises at least one multi-function jack units(50), a hydraulic pressure supply unit, and a hydraulic pressure control unit(70). The multi-function jack units are placed with multiple independent jacks(55) in parallel and connected by hydraulic lines. The hydraulic pressure supply unit supplies the hydraulic pressure to the jack units. The hydraulic pressure control unit, installed between the hydraulic pressure supply unit and the jack unit, controls the hydraulic pressure. Hydraulic converters are installed at the hydraulic lines. The jack units have four independent jacks to lift 50 tons. Height of each jack is 50 to 90mm. A control unit(80) receives a signal of a distance sensor and controls the hydraulic pressure control unit.

Description

System for repairing of bridge structure and method therefor}

1 is a schematic configuration diagram showing a general bridge installation structure,

2 is a detailed view showing a bridge device installation state,

3 is a view showing a structure for lifting a conventional bridge structure.

4 is a perspective view showing a double-acting hydraulic jack used to raise a conventional bridge structure,

5 is a schematic diagram showing the overall configuration of a conventional bridge structure repair apparatus;

6 is a schematic diagram illustrating an installation state of a position distance sensor in a conventional bridge structure repair process;

7 is a schematic view showing the overall configuration of the bridge structure repair apparatus according to the present invention,

8 is a detailed view showing a multifunctional jack means according to the present invention;

9 is a schematic diagram showing an installation state of a distance sensor and a wireless communication facility in a bridge structure repair apparatus according to the present invention;

10 is a view showing a state in which the multifunctional jack means according to the invention installed on the bridge structure,

11 are diagrams illustrating a shoe to be replaced in the bridge structure repair apparatus according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: slab 12: pier

16: shoe 50: multi-function jack means

51, 52, 53, 54, 55: single acting jack 56: hydraulic port

57: jack support plate 58: hydraulic line

58a, 58b, 58c: hydraulic conversion port 60: hydraulic pressure supply means

65: hydraulic ballast 66: solenoid valve

67 pressure gauge 70 hydraulic pressure control means

72: hydraulic precision control circuit 80: control computer

85: R.F transceiver circuit 90: distance sensor

92: iron plate 94: R.F transceiver

The present invention relates to an apparatus for repairing a bridge structure, and more particularly, to a bridge structure repair apparatus and method for replacing a shoe of a bridge by raising or lowering a bridge deck structure using a hydraulic jack.

In general, since the bridge structure is continuously subjected to excessive load according to the traffic, etc., if a certain time after the bridge is installed, damage due to aging occurs.

Such a bridge structure is provided with a shoe (shoe), that is, a bridge device that properly absorbs the load of the upper structure of the bridge and transmits it to the lower structure, and is repaired to replace the shoe because it is damaged or broken over time. At this time, in order to replace the shoe to raise the bridge upper structure to some extent the replacement maintenance work is in progress.

For reference, Figure 1 is a view showing a state in which the upper slab is installed on the bridge or alternating, when replacing the shoe of such a bridge with an integral elastic bearing for seismic reinforcement, the short span slab (1) is 40TON, then two spans The continuous slab 2 is 100TON on both movable ends, the middle fixed end is 150TON, and the next three span continuous slab 3 is 50, 100, 150, 4 types of jacks such as 200TON are required, so it is possible to increase labor cost and lengthen air by repeating the connection and dismantling with computer system. A problem such as interruption occurs.

In particular, in the case of a bridge constructed more than 10 years ago, as shown in FIG. 2, there are numerous bridges with only 50 to 150 mm of die space and 100 to 200 mm of podium distance, and even the same bridge due to surveying errors during construction. And difference of the geometry space.

In order to repair such a bridge, the slab 10 is raised to replace the shoe 16. At this time, the lifting operation is performed while the double-acting hydraulic jack is installed on the pier 12 or the shift 14, but as described above. As such, existing bridges do not have enough space to install double-acting hydraulic jacks.

Therefore, in order to install a double-acting hydraulic jack, as shown in (a) of FIG. 3, the pier 12, a part of the alternating concrete 12a is broken, and the double-acting hydraulic jack 20 is installed in the broken portion, or (b) of FIG. As shown in FIG. 3 (c) by installing a concrete pedestal 13 additionally installed on the side of the pier (12), or using several types of steel bracket 15 as shown in (c) of FIG. The double acting hydraulic jack 20 was installed.

In the conventional double-acting hydraulic jack installation process is to break the concrete or install an additional structure, there is a problem that the construction cost is increased and the construction period takes too long.

That is, the double-acting hydraulic jack (100TON standard) 20 is a total diameter of about 175mm height is 150 ~ 200mm as shown in Figure 4 is the sum of the secondary iron plate 22 is about 300mm bar, the bridge pore distance of less than 175mm or the space If the bridge is 150 ~ 200mm or less, as shown in Figure 3 to break the concrete such as pier (Fig. 3 (a)), or to install the concrete bracket 13, or by adding a variety of steel brackets 15, Not only will the construction cost of bridges increase, but the air will be long.

In addition, since the position distance sensor 25 and the computer 30 are connected with a plurality of wired cables (C), as shown in FIG. Broken cables can cause the entire system to break down or require bridge maintenance.

In addition, when replacing the seismic reinforcement integrated elastic bearing, there is a risk that defects may occur due to the change of the bonding position in the case of the adhesive type, and the bolt type is about 40mm larger than the conventional one, and thus the disadvantage of breaking 40mm below the pier and the alternating portion is disadvantageous. have.

In addition, the conventional position sensor 25 is composed of a position distance chamber 25a and a position distance sensor 25b as shown in Figure 6, the pier 12 next to the hydraulic jack 20 ', several concrete screws 26 in the alternating position ) And use it, and after that, the work is to proceed to remove all the screws, there is a disadvantage that the air is long to increase the number of work.

On the other hand, when the slab, which is the upper structure, is raised or lowered at the time of bridge repair work, if the hydraulic jack and imbalanced impression are generated in the vicinity, a step difference may be caused by a difference of 2-3 mm, which may overload the bridge. And the need for stable increases and cuts is being raised.

The present invention has been made to solve the above problems, by using a plurality of single-acting jack can be easily repaired bridges with low mold space and short podium distance, thereby shortening the construction period It is an object of the present invention to provide an apparatus and method for repairing bridge structures that can reduce construction costs.

In addition, the present invention is configured to perform the lifting or lowering of the bridge while measuring the height of the lifting and lowering process by ultrasonic or laser distance sensor and transmitting and receiving it to the control unit by wireless communication, it is possible to perform the ultra-precision bridge raising work in fine units It is another object of the present invention to provide a bridge structure repair apparatus and method that can increase the precision and reliability of bridge repair work.

Bridge structure repair apparatus according to the present invention for realizing the above object is located on the top of the bridge or alternator to raise or lower the upper structure of the bridge, a plurality of single-acting jacks in parallel to cope with a plurality of loads At least one multifunctional jack means arranged and interconnected by hydraulic lines to constitute a set; Hydraulic supply means for providing hydraulic pressure to the multifunctional jack means; It is characterized in that it comprises a hydraulic control means provided between the hydraulic supply means and the multi-function jack means for controlling the provision of the hydraulic pressure.

In the multifunctional jack means, it is preferable that a hydraulic conversion port is provided in each hydraulic line between the single-acting jacks, and one of the hydraulic lines is configured to supply a hydraulic pressure provided from the hydraulic pressure supply means.

The multi-function jack means is composed of four single-acting jack that can raise the load of 50 TON, the height of each single-acting jack is preferably composed between 50 ~ 90mm.

In particular, the bridge structure repair apparatus includes a laser or ultrasonic distance sensor for measuring the distance between the bridge superstructure and the bridge or the alternator, control means for receiving the signal of the distance sensor and controlling the hydraulic control means, and the sensor and control It is preferably configured to include wireless communication means for enabling wireless communication between the means.

Next, the bridge structure repair method according to the present invention for realizing the above problems, by using the bridge structure repair device, by adjusting the hydraulic conversion port to match the load of the multi-function jack means, bridge piers, shifts Installing on the bed; Connecting and installing the hydraulic pressure supply means and the hydraulic control means to the multifunctional jack means, respectively; Installing a laser or ultrasonic distance sensor on the pier, alternating concrete; Raising the upper structure of the bridge by controlling the hydraulic pressure supply means and the hydraulic control means while measuring the height based on the information input through the distance sensor; When the impression of the bridge structure is made to the desired height, characterized in that it comprises the step of removing the existing shoe and then replacing the new shoe.

The pulling height of the bridge upper structure is preferably pulled while measuring in ± 0.1mm units.

The new shoe is preferably replaced with a vulcanized integral shoe of any one of a fixed, one direction and a front direction.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

7 is a schematic view showing a bridge structure repair apparatus according to the present invention.

As shown, the bridge structure repair apparatus according to the present invention is located at the top of a bridge or alternator to raise or lower a bridge upper structure, that is, a slab, and a plurality of single-acting jacks 55 are provided to cope with a plurality of loads. At least one multifunctional jack means 50 composed of one set, hydraulic supply means 60 for providing hydraulic pressure to the multi-function jack means 50, the hydraulic supply means 60 and multi-function jack means 50 And a hydraulic control means 70 for controlling the provision of hydraulic pressure, and a control computer 80 for controlling the hydraulic pressure supply means 60 and the hydraulic control means 70.

Detailed description of the main components of the present invention as follows.

As shown in FIG. 8, the multifunctional jack means 50 includes a plurality of single-acting jacks 55 (51, 52, 53, 54) arranged in parallel. Here, the single-acting jack 55 is a configuration of a general single-acting cylinder, which has a low die space of 50 to 150 mm and a height of 50 to 90 mm and a width of 125 mm or less so that it can be easily applied to a bridge with a short pore distance. It is preferable that it is comprised with what can support a load.

In particular, the jack means 50 of the present invention, unlike the conventional hydraulic jack is composed of a double-acting cylinder can be configured to be a single-acting cylinder to minimize the height in accordance with the characteristics of the cylinder configuration, and thus can be easily applied to bridges with low mold space Will be.

Multi-function jack means 50 composed of such a single-acting jack 55 is composed of four single-acting jacks 55, it is preferable to be configured to be able to change the pulling load, such as 50, 100, 150, 200 TON according to the combination of the number Do. Of course, one multi-function jack means 50 is not limited to four single-acting jacks 55, and may be configured to four or less or four or more depending on the implementation conditions.

Multifunctional jack means 50 composed of a plurality of single-acting jacks 55 as described above is preferably installed on one iron plate or jack support plate 57, may be supported in a box-like structure with the top open as shown in the figure Do. However, it is preferable that a plurality of single-acting jacks 55 are arranged and configured to simultaneously move in one set.

In particular, the hydraulic lines 58 are connected to each other between the single-acting jacks 55, and each of the hydraulic lines 58 between the single-acting jacks 55 are provided with hydraulic conversion ports 58a, 58b, and 58c, respectively. One of the hydraulic lines 58 is provided with a hydraulic port 56 to which the hydraulic pressure provided from the hydraulic pressure supply means 60 is supplied.

Referring to Figure 8 briefly described the operation of the multi-function jack means 50, the hydraulic pressure through the hydraulic port 56 in the state that all three hydraulic conversion ports (58a, 58b, 58c) is closed at 50 ton lifting Since it is supplied, only the second single-acting jack 52 is to operate. When one of the first hydraulic conversion port 58a or the second hydraulic conversion port 58b is opened at the time of 100 ton lifting, the hydraulic pressure is combined with the second single-acting jack 52 and the first or third single-acting jack 51. ) 53 is also supplied, so that the two single-acting jack (55) is working.

In this way, by adjusting the opening state of the hydraulic conversion port (58a, 58b, 58c), it is possible to raise the structure while changing the capacity according to the load of 50, 100, 150, 200 ton according to the lifting conditions of the bridge. Will be.

For reference, FIG. 7 is a view illustrating that five multi-functional jack means 50 are used as described above, and it is possible to use a combination of less or more according to the pulling conditions of the bridge.

Next, the hydraulic supply means 60 and the hydraulic control means 70 for providing hydraulic pressure to the multifunctional jack means 50 will be described with reference to FIG. 7.

The hydraulic supply means 60 is composed of an oil tank 61 and a hydraulic pump 63, the hydraulic ballast 65 between the hydraulic pump 63 and the hydraulic port 56 of each multi-function jack means 50. The branch line between the hydraulic ballast (65) and each hydraulic port 56 is provided with a solenoid valve 66 for controlling the hydraulic pressure.

Each solenoid valve 66 is also operated by a hydraulic precision regulating circuit 72 which is operated under the control of the control computer 80. Here, the solenoid valve 66, the hydraulic precision control circuit 72, and the like constitute the hydraulic control means 70.

Meanwhile, reference numeral 67 in FIG. 7 represents a pressure gauge for measuring the pressure state of the hydraulic pressure.

FIG. 9 is a schematic diagram illustrating a structure for enabling wireless communication of a distance measurement to a bridge structure repair apparatus according to the present invention as described above.

Distance sensor 90 for measuring the distance between bridge slab 10 and pier 12 or alternation as shown, and wireless communication to enable wireless communication between the sensor 90 and control computer 80 Means.

The distance sensor 90 is preferably composed of a laser or ultrasonic sensor, the lower plate 92 for supporting the sensor may be installed.

The wireless communication means is composed of a Bluetooth (Blue-tooth) system, etc., as shown in FIG. 9, a radio frequency (RF) transceiver 94 is installed on the iron plate 92, the control computer 80 The side may be made of a configuration in which the RF transceiver circuitry 85 is installed as shown in FIG.

In place of the conventional position distance sensor 25 of FIG. 6, the laser or ultrasonic distance sensor 90 of FIG. 9 is connected to the iron plate 92 to be installed on the pier 12 and alternating concrete as it is. Together, multiple concrete screws can solve the difficulties of connecting and dismantling piers, shifts.

In addition, the wireless communication between the position distance sensor 90 and the control computer 80 is configured to enable wireless communication, such as noise generated when using a conventional wired cable, narrow working space, inadvertent connection or damage due to inadvertent work habits. Problems such as interrupted maintenance work can be solved.

In particular, the conventional position distance sensor 25 was able to measure up to ± 1mm, but when using the laser distance sensor 90 as in the present invention, it is possible to measure in ± 0.1mm units ultra-precision bridge of ± 0.1mm units The impression allows the replacement of the more precise and reliable one-piece elastic bearing.

Referring to the repair method using the bridge structure repair apparatus according to the present invention configured as described above are as follows.

First, the multifunctional jack means 50 is installed on the bridge pier 12, alternately by adjusting the hydraulic conversion ports (58a, 58b, 58c) in accordance with the load of the bridge. Here, by adjusting the hydraulic conversion port in accordance with the upper structure of the bridge, that is, the slab 10 is prepared to raise various loads (50, 100, 150, 200TON) according to the bridge conditions.

 And the single-acting jack 55 of the multi-function jack means 50 is installed on the bridge 12, the bridge of the bridge with the upper auxiliary iron plate as it is.

10 is a view showing a state in which the multi-function jack means 50 is used when the bridge space is low but the podium distance is sufficient.

Next, the hydraulic supply means 60 and the hydraulic control means 70 are connected to the multifunctional jack means 50, respectively. At this time, the hydraulic pressure is oil tank 61, hydraulic automatic pump 63, pressure gauge 67, hydraulic stabilizer 65, pressure gauge 67, high performance solenoid valve 66, hydraulic hose 69, multi-function jack means It can be supplied through the hydraulic port 56 of 50.

Next, a laser or ultrasonic distance sensor 90 and wireless communication devices are installed on the pier 12 and the alternating concrete as shown in FIG. 9.

The lifting height of the structure is precisely measured in units of ± 0.1 mm through the distance sensor 90, and the hydraulic supply means 60 and the hydraulic control means 70 are controlled by the control computer 80 according to the measurement state. While raising the slab 10 that is the upper structure of the bridge.

Next, when the impression of the bridge slab 10 is raised to the desired height, the existing shoe (disc device) is removed, and then the new shoe is replaced. At this time, after breaking the concrete in accordance with the standard, after removing the existing shoe, the adhesive vulcanized integral fixed-end shoe (a), adhesive vulcanized integral one-way shoe (b), adhesive vulcanized integral omnidirectional shoe as shown in FIG. (c) or the like.

After that, the control computer 80 controls the hydraulic supply means 60 and the hydraulic control means 70 to lower the raised bridge slab to finish the repair work on the bridge.

Bridge structure repair apparatus and method according to the present invention configured and acted as described above, because it uses a multi-function jack means consisting of a single-acting jack, even if the geometry space of the bridge is low or the short distance is to break the concrete or separate It is possible to repair and reinforce the bridge in the state of simply installing the jack means without installing additional structures. Therefore, it does not break concrete or install additional structures at the time of raising the bridge, thereby reducing the construction cost and providing an advantage of shortening the construction period.

In addition, the present invention is because the multi-function jack means is configured by combining a plurality of single-acting jack, can be used to vary the pulling capacity of the multi-function jack means in accordance with the load of the bridge, it is necessary to provide a number of jacks separately It also provides an advantage that can be used with varying capacities regardless of the type and condition of the bridge.

In addition, since the present invention uses a laser distance sensor and a wireless communication method, the structure of the entire system is simple, minimizing the occurrence of the failure, and the use of the device more stably, especially when the bridge structure is pulled up high precision bridge This also provides the advantage of improving precision and reliability in bridge repair.

Claims (7)

Located on top of a bridge or alternating shaft to raise or lower the upper structure of the bridge, at least one or more single-acting jacks are arranged in parallel and interconnected by hydraulic lines to cope with a plurality of loads to form a set Multifunctional jack means; Hydraulic supply means for providing hydraulic pressure to the multifunctional jack means; Bridge structure repair apparatus characterized in that it comprises a hydraulic control means for controlling the provision of the hydraulic pressure provided between the hydraulic supply means and the multi-function jack means. The method according to claim 1, In the multi-function jack means, each hydraulic line between the single-acting jack is provided with a hydraulic conversion port, and one of the hydraulic line is a bridge structure maintenance, characterized in that the hydraulic supply portion provided in the hydraulic supply means is configured Device. The method according to claim 1, The multi-function jack means is composed of four single-acting jack that can raise the load of 50 TON, the height of each single-acting jack bridge structure, characterized in that between 50 ~ 90mm. The method according to claim 1, The bridge structure repair apparatus includes a laser or ultrasonic distance sensor for measuring a distance between a bridge upper structure and a bridge or shift, control means for receiving a signal of the distance sensor and controlling the hydraulic control means, the sensor and the control means. Bridge structure repair apparatus comprising a wireless communication means for enabling wireless communication between. In using the bridge structure repair apparatus in any one of Claims 1-4, Adjusting the hydraulic conversion port according to the load of the bridge to install the multifunctional jack means on the bridge piers and the bridges; Connecting and installing the hydraulic pressure supply means and the hydraulic control means to the multifunctional jack means, respectively; Installing a laser or ultrasonic distance sensor on the pier, alternating concrete; Raising the upper structure of the bridge by controlling the hydraulic water supply stage and the hydraulic control means while measuring the height based on the information input through the distance sensor; If the impression of the bridge structure is made to the desired height, bridge structure repair method comprising the step of removing the existing shoe and then replacing the new shoe. The method according to claim 5, The lifting height of the bridge upper structure is a bridge structure repair method, characterized in that the lifting while measuring in ± 0.1mm units. The method according to claim 5, The new shoe is a bridge structure repair method, characterized in that for replacing the vulcanized integral shoe of any one of fixed, one-way, omni-directional.

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