KR101033022B1 - Dismantle method of bridge - Google Patents

Abstract

PURPOSE: A method for breaking a bridge up is provided to minimize the influence on the traffic by rapidly performing a bridge breaking work. CONSTITUTION: A method for breaking a bridge up is as follows. Temporary bents are installed in a terminal. A crane is installed between the temporary bents. The top of a deck conveyor(100) and the bottom of a bridge deck are fixed. The deck conveyor is transferred. Both ends of the bridge deck are located at the top of the temporary bents. The bridge deck is separated from the deck conveyor and is supported by the temporary bents.

Description

How to dismantle a bridge{DISMANTLE METHOD OF BRIDGE}

The present invention relates to a method for releasing a bridge, and more specifically, when dismantling a bridge such as an elevated roadway and an overpass installed in a downtown area, the bridge can be quickly dismantled with minimal effect on the flow of traffic. It's about how.

Conventional methods of installing elevated roads and viaducts installed in downtown areas install bridges or shifts at a certain height, and continuously install the tops in the direction of the axis between these piers and shifts, and driveway and sidewalks on top of the tops. The bridge was completed by installing the structure.

In the method of installing the top plate, various construction methods can be selected and used depending on the length of the bridge.If the bridge is long enough to install dozens or more of piers, the top plate is continuously cast while moving between the pier and the pier. You can consider using a launching girder system that can be done, and the launching girder system has the effect of completing the top of the bridge without significantly affecting the traffic in the place where the bridge is installed.

However, if the length of the bridge is short, it is somewhat difficult to use the launching girder system due to the problem of construction cost, and for this reason, most of the bridges are constructed using a crane after installing a mobile crane.

In the construction method of a bridge using a crane, a number of cranes capable of lifting a certain load are installed around a bridge or a bridge, and the top plate is divided into a certain size and then loaded onto a truck and transported to the site where the bridge is constructed.

The upper structures of the bridges carried in this way are assembled in a size that can be raised between the piers and the piers in the field, and are raised by a crane and installed in the axis direction between the piers and the bridges. After the installation of the bridge top plate is completed, the crane is withdrawn and the roadway or sidewalk is constructed on the bridge top plate to complete the construction of the bridge.

At this time, if the length of the bridge to be constructed is short, the work can be completed at a position where the crane is once installed, but if the length of the bridge is not short, the crane is moved to install and then the top plate of the bridge is constructed.

However, in the case of a crane, a support must be installed to prevent overturning during work, and for this reason, when multiple cranes are installed, each crane occupies a certain range of installation space.

Therefore, in the case of installing a large number of cranes and constructing bridges in such a complicated downtown area, the area where the bridges are installed has a problem in that extreme traffic jams are caused by the space occupied by the cranes installed.

Moreover, if the area where the bridge is installed is an intersection area, most of the obstacles in the traffic of all vehicles in the crossing lane during the process of installing the top plate are mostly interrupted, and the main components of the top plate are installed from the step of installing the crane before constructing the top plate. After all the construction was completed, the traffic at the intersection was paralyzed during the time until the phase of demolition of the crane.

To minimize this problem, the installation work of the top plate is usually done at night during the construction of the bridge in the downtown area, but if the work of installing the top plate does not finish all at night, the crane is withdrawn again the next night. After reinstalling, I had to continue working.

For this reason, it was a reality that a substantial portion of the cost used to install the top plate of the bridge was used as the cost of using the crane. In addition, traffic congestion due to the use of the crane caused long-term traffic congestion in the area. It was a bigger challenge to solve.

As a method of removing the used bridge, in the reverse order of the installation method described above, after removing all roads and sidewalk pavements installed on the overpass or overpass, the top plate is dismantled from the piers and shifts, and the piers or shifts are dismantled. .

As a method of dismantling the top plate, it is possible to consider using the launching girder system in the same way as during construction, but this is only for the case where the length of the bridge is long, and the length of the bridge is short, such as an elevated roadway and an overpass installed at an intersection. In some cases, it is economical to remove the top plate via a crane.

In order to remove the top plate through the crane, a crane capable of descending the top plate must be installed around the bridge, and the top plate is lowered to the ground through the crane, and then the top plate is separated from the ground to a certain size and transported by truck. Demolition of the top plate was possible.

In this way, even when the bridge deck was dismantled with a crane, there was a problem in that traffic was congested due to the work space occupied by each crane. It is a reality that more time is required to install or dismantle a crane, and consequently, it is obvious that traffic jams are caused for a longer period of time than the time to demolish the bridge deck.

In the case of elevated roads and viaducts installed in urban areas where traffic is congested among the bridges, cranes are generally used for installation or dismantling, but used for installation and dismantling of cranes and the work space occupied by cranes when installing and dismantling bridges. There was a problem that the traffic flow around the road was interrupted for a long time, and it was a reality that many complaints were received due to the inconvenience of the citizens.However, there is no method to replace this, and a crane has been installed in a traffic congestion area as before. That is true.

The present invention has been devised in view of the above points, and provides a method for dismantling a bridge that can quickly work without disrupting surrounding traffic as much as possible when dismantling an elevated roadway and an overpass installed in a downtown area. That is the purpose.

In addition, the purpose of limiting the installation point of the crane in the process of dismantling the bridge is to minimize the impact on the flow of traffic, and minimizing the cost of using the crane in the process of dismantling the bridge by minimizing the movement of the crane. .

Dismantling method of the bridge according to the present invention devised in view of the above points is a loading dock installation step of installing a glove of the same or similar height to the bridge pier of the bridge adjacent to the bridge and in the region where the upper plate transport device is operable; A crane installation step of installing a crane to raise the bridge top plate between the docks of the loading dock; The top plate transport device is placed between the piers on which the top plate to be demolished is installed, and the height adjustment cylinder is extended to lift the carrier device from the ground to separate the bridge top plate from the pier, and then to fix the top of the support and the bottom of the bridge top plate Preparation stage; A conveying step of moving the upper plate conveying device to the side of the pier, reducing the expanded height adjusting cylinder to a length before being expanded, and then moving the upper plate conveying device to the loading and unloading field; An unloading preparation step of extending the height-adjusting cylinder to raise the top plate transporting device from the ground, and moving the bridge transporting device between the vents so that both ends of the bridge top plate are positioned on the top of the glove; It is possible to separate through the fixing means and the bridge top plate, and retract the height adjustment cylinder so that the top plate is separated from the top plate conveying device so that the top plate is unloaded.

The dismantling method of the bridge according to the present invention configured as described above can quickly finish the work without disturbing the flow of traffic as much as possible when dismantling the bridge in the downtown area, thereby minimizing the social cost wasted due to traffic congestion due to the dismantling of the bridge. There is an effect that can be done, and accordingly, there is an effect of minimizing civil complaints generated by dismantling the bridge.

In addition, in the process of dismantling the bridge, it is possible to change the installation point of the crane to a place where the traffic away from the bridge is not congested, and the crane installation position does not need to be changed according to the position of the top of the bridge, thereby improving the working efficiency of the crane. It has the effect of increasing.

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In addition, when the bridge is dismantled, the bridge top plate is moved to the crane installation point by a transport device, and the transportation device is carried out in a way that transports the other top plate in the direction of the crane between the cranes and the trucks. Compared to using the bridge to dismantle, it has the effect of being able to proceed quickly.

1 is a plan view and a front view showing in detail a top plate transport device used to practice the present invention,
Figure 2 is a side view showing a side of the top plate transport apparatus of Figure 1,
3 is a front view and a cross-sectional view showing in detail the hydraulic bearing and the sand bearing, which are horizontal adjustment means installed on the support of the upper plate conveying device shown in FIGS. 1 and 2,
13 is a flow chart for explaining a method of dismantling a bridge according to the present invention,
14 is a flow chart for explaining in detail the transport preparation step of the dismantling method of the bridge of Figure 13,
15 and 16 are explanatory diagrams for explaining the transport preparation step of the method of dismantling the bridge of FIG. 13,
17 is an explanatory diagram for explaining the unloading preparation step of FIG. 13,
18 is an explanatory diagram for explaining the step of unloading the top plate of FIG. 13.

Hereinafter, a method for dismantling a bridge according to the present invention will be described in detail with reference to the accompanying drawings.

Referring to Figures 1 to 18, the method of dismantling the bridge according to the present invention is carried out by using together with the existing crane 300 and the top plate conveying device 100 specially made for the present invention, the top plate conveying device 100 is provided with components such as the body 110, wheel 120, height adjustment cylinder 130, support 140 and fixing means 150.

1 to 3, the body 110 of the upper plate transport apparatus 100 is a plate shape having a size sufficient to fit between the piers 11 of the bridge 10, and a driver's seat is provided in the front. It may be.

A plurality of wheels 120 are provided under the body 110, and the wheels 120 are densely installed to support the bottom surface of the body 110 with a uniform pressure. In addition, the wheel 120 is provided to be able to rotate 360 degrees in the horizontal direction around the body 110, rather than being fixed to proceed only in a specific direction based on the body 110.

The height adjustment cylinder 130 is a type of hydraulic device installed between the body 110 and the wheel 120, and adjusts the distance between the body 110 and the wheel 120. That is, when the height adjustment cylinder 130 is expanded, the body 110 rises as much as the height adjustment cylinder 130 is extended from the ground around the wheel 120, and when the height adjustment cylinder 130 is contracted, it descends again. Is done.

The support 140 provided on both sides of the upper portion of the body 110 is an iron structure having sufficient rigidity to support the top plate 12 of the bridge 10, and is installed on both sides of the body 110 in the width direction. At this time, the installed support 140 is preferably manufactured in consideration of the height of the pier 11 of the bridge 10, the height of the top when the height adjustment cylinder 130 is expanded than the height of the pier 11 It is desirable to set it high.

In addition, a horizontal adjustment means 160 and a fixing means 150 are provided on an upper portion of the support 140, and the horizontal adjustment means 160 may be a hydraulic support 169 or a sand bearing 161.

In the above, the hydraulic support 169 used as the horizontal adjustment means 160 is installed on both sides of the upper part of the support 140, and is a device whose height is adjusted by hydraulic pressure provided from the outside, which was used in the conventional bridge 10. It is also possible to use the same bridge 10 support.

The sand bearing 161 is installed on both sides of the upper portion of the support 140 in the same manner as the hydraulic support 169, the cylinder 162 and the cylinder 162 of the rectangular shape fixed to the upper portion of the support 140 It is composed of a piston 163 inserted into the interior of the cylinder 162 and sand 164 filled in the piston 163, and both sides of the cylinder 162 are provided with a water inlet and a sand 164 outlet. do.

These sand bearings 161 are used to level the heavy objects placed on the upper part of the piston 163, injecting water through the water inlet and opening the sand 164 outlet, sand (164) sand into the outlet 164) is the principle that the upper portion of the piston 163 is horizontal as it is discharged.

The upper portion of the horizontal adjustment means 160 is provided with a fixing means 150 that is coupled to the top plate 12 of the bridge 10, the fixing means 150 is a bottom surface and bolts of the top plate 12 of the bridge 10 And a nut.

The method of installing and dismantling the bridge of the present invention, which is constructed by using the upper plate transport apparatus 100 configured as described above, uses a secluded space around the traffic avoiding a complicated intersection, and the bridge is minimized while affecting the flow of traffic. It is a way to install or dismantle.

That is, the main content of the present invention is to minimize the work in a traffic-complex place such as an intersection when installing or dismantling a bridge, which is possible by using the top plate transport apparatus 100 described above.

Hereinafter, a method of dismantling the bridge using the top plate transport apparatus 100 and the crane 300 will be described.

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13 to 18, the method of dismantling the bridge according to the present invention, which is made through the top plate transport device 100 and the crane 300, is a method of demolishing the top plate 12 from the top of the bridge 11 Contents and the method of dismantling the pier 11 is the same as the existing method, the loading dock installation step (S210), the crane installation step (S220), the transport preparation step (S230), the transport step (S240), and the unloading preparation step (S250) ) And the top plate unloading step (S260).

Referring to FIG. 6, the loading dock installation step (S210) selects an area in which the upper plate transport device 100 is capable of being operated, but relatively less traffic than the surrounding area, among the areas where the bridge 10 to be dismantled is installed. It is a step and a step of installing a vent 210 having the same or similar height and width to the pier 11 in the selected area.

In the above, the location of the loading dock 200 is preferably paved with asphalt or concrete so that the top plate transport device 100 can be safely moved, and in the case of a back road or an intersection with low traffic, the road side of one side with relatively low traffic. It is desirable to set.

In addition, it is preferable to select a position as close as possible to the bridge 10 in consideration of the fact that the top plate transport apparatus 100 for transporting the top plate 12 of the bridge 10, which is a heavy object, cannot move at high speed.

In the case of the vent 210, it is preferable that it is an iron structure having a rigidity sufficient to support the top plate 12 of the bridge 10, and the height of the vent 210 is the same as the height of the pier 11 or It should be produced similarly.

That is, when the height of the vent 210 is significantly lower than the height of the pier 11, the upper plate 12 coupled to the upper portion of the upper plate transport apparatus 100 and the fixing means 150 of the upper plate transport apparatus 100 are used. There is a problem that cannot be separated, and when the height of the vent 210 is significantly higher than that of the pier 11, the upper plate 12 fixed to the upper portion of the support 140 when the upper plate transport device 100 moves is a vent. This is because there is a problem that it cannot be moved to the upper portion of the vent 210 by being caught on the side of the 210.

Therefore, the height of the vent 210 is preferably manufactured to be the same or similar to the height of the bridge 11 of the bridge 10 to be dismantled.

In the above, the glove 210 installed in the loading dock 200 has been described as an example in which it is manufactured to be similar to the height and width of the pier 11, but it is not necessary to separately install the glove 210.

That is, a method of designating and using the pier 11 in an area where traffic is not congested as the vent 210 may be considered. For this, the loading dock installation step (S210) selects a pier 11 located in an area with low traffic among the piers 11 in which the top plate transport device 100 is installed in an area where it can be operated and the top plate 12 is removed. , It is possible to designate the selected pier 11 as a glove 210.

Therefore, when the bridge 10 to be dismantled is composed of a plurality of piers 11, closing some lanes, such as a road passing in one direction, rather than a place with a lot of traffic such as an intersection, does not significantly affect the flow of traffic. It is possible to consider setting the pier 11 located there as a temporary glove 210. Thereafter, the periphery of the pier 11 designated as the vent 210 may be controlled and the area may be set as the loading dock 200.

Therefore, it will be described below that the vent 210 is made of a separate steel structure and includes all of the piers 11 which are designated and used as the vents 210 among the piers 11 to be demolished.

After the installation of the loading dock 200 and the glove 210 through the loading dock installation step (S210), a crane installation step (S220) of installing the crane 300 is performed.

Referring to FIG. 7, the crane installation step (S220) is to install the crane 300 around the glove 210 inside the loading dock 200, and the transported top plate 12 is the upper part of the glove 210. It is a step of installing the crane 300 in an appropriate amount in a position that does not interfere with the movement of the upper plate transport device 100 while being easy to move to.

After the basic preparation for dismantling the top plate 12 is completed through the loading dock installation step (S210) and the crane installation step (S220), a step of dismantling the top plate 12 is carried out in earnest, and as a starting point, a transport preparation step (S230) ) Conduct.

15 and 16, the transport preparation step (S230) is a step of preparing to transport the top plate 12 installed on the upper portion of the pier 11, the upper plate transport device 100 between the piers (11) After moving, it is a step of combining the top plate 12 and the top plate transport device 100.

To this end, the upper plate transport apparatus 100 is moved between the piers 11 and then expands the height adjustment cylinder 130 so that the upper plate 12 is separated from the upper portions of the piers 11 and is provided on the support 140. Fixing means 150 and the bottom of the top plate 12 are fixed. At this time, the combination of the fixing means 150 and the top plate 12 is possible with a number of bolts and nuts.

3 and 14 to 16, in order to proceed with the transport preparation step (S230) in more detail, the separation step (S231), the horizontal adjustment step (S232), the top plate fixing step (S233) to proceed in stages Can be.

These steps are performed after moving the top plate transport device 100 between the bridges 11 of the bridge 10, and the separation step S231 expands the height adjustment cylinder 130 of the top plate transport device 100. It is possible.

When the height-adjusting cylinder 130 is expanded in this way, the body 110 of the upper plate transport device 100 rises from the ground according to the extent of expansion of the height-adjusting cylinder 130, and is provided on both upper sides of the body 110. The fixing means 150 installed on the upper portion of the provided support 140 comes into contact with the bottom surface of the upper plate 12 to be transported. At this time, if the height adjustment cylinder 130 continues to expand even after the upper portion of the fixing means 150 comes into contact with the bottom surface of the top plate 12, the top plate 12 is separated from the pier 11.

After the top plate separation step (S231) is completed, a horizontal adjustment step (S232) is performed. The horizontal adjustment step (S232) may be performed using the horizontal adjustment means 160 provided between the support 140 and the fixing means 150, and the horizontal adjustment means 160 of the top plate conveying device 100 The hydraulic bearing 169 and the sand bearing 161 described in explaining the main configuration can be used.

First, in the case of using the hydraulic support 169, the height of the hydraulic support 169 provided on both sides of the upper support 140 is adjusted by hydraulic pressure, so that the upper board 12 raised on the upper part of the support 140 is transported. It is made horizontal in the width direction of the device 100.

When the sand bearing 161 is used as the horizontal adjustment means 160, when the sand outlet 166 of the cylinder 162 is opened and water is injected through the water inlet, the sand 164 in the sand outlet 166 And water are discharged at the same time, and the upper part of the piston 163 is gradually leveled while being supported by the sand 164.

As described above, when the sand 164 escapes between the cylinder 162 and the piston 163, and the piston 163 remains horizontal within the tolerance range, the water inlet 165 is blocked to block the injected water and sand The outlet 166 is closed.

Through the above process, the level of the top plate 12 placed on the support 140 of the top plate transport apparatus 100 is maintained by the horizontal adjustment means 160.

When the top plate 12 is spaced a certain distance from the pier 11 and leveled through the above process, the top plate 12 is fixed to the top plate (S233).

The top plate fixing step (S233) is to combine the top plate conveying device 100 and the top plate 12, which fixes the bottom surface of the fixing means 150 and the top plate 12 provided on the top of the top plate conveying device 100. Means, it is possible to combine a number of bolts and nuts.

After performing the separation step (S231), the horizontal adjustment step (S232), the top plate 12, the top plate fixing step (S233), a transport step (S240) for carrying the top plate 12 is performed.

The conveying step (S240) is to move the upper plate 12 fixed to the upper portion of the upper plate conveying device 100 to the loading dock 200 and then to be positioned between the vents 210 installed in the loading dock 200. First, the upper plate transport apparatus 100 must be moved to the side of the pier 11.

In the above, after the top plate conveying device 100 is moved to the side of the pier 11, the height adjustment cylinder 130 is contracted so that the top plate conveying device 100 is positioned as close as possible to the ground. Through this process, the top plate transport apparatus 100 has the body 110 as close as possible to the wheel 120 to ensure driving safety, and moves to the loading dock 200 at a low speed to be located on the side of the vent 210. do.

Thereafter, the unloading preparation step (S250) is performed to install the top plate 12 on the upper part of the vent 210, and the unloading preparation step (S250) expands the height adjustment cylinder 130 of the top plate transport apparatus 100. It begins by letting.

Referring to FIG. 17, when the height-adjusting cylinder 130 is expanded, the body 110 of the top plate conveying device 100 rises again from the ground, and the top plate fixed to the top of the top plate conveying device 100 ( 12) is located at a higher point than the vent 210.

Thereafter, the top plate transport apparatus 100 moves while changing the angle of the wheel 120 to be positioned between the vents 210, and the top plates 12 fixed to the top of the top plate transport apparatus 100 have both ends. It will be located on top of the vent 210.

Referring to FIG. 18, after the unloading preparation step (S250) is completed, a top plate unloading step (S260) is performed, and a top plate unloading step (S260) is performed by the fixing means 150 and the top plate 12 of the top plate transport apparatus 100. It is possible to shrink the extended height adjustment cylinder 130 of the top plate transport device 100 after separating the bolts and nuts fastened between ).

That is, when the upper plate 12 separated from the fixing means 150 contracts the height adjustment cylinder 130, when the body 110 of the upper plate conveying device 100 descends, the upper plate 12 is the upper plate conveying device 100. It is separated from and is supported on the upper portion of the vent 210.

The method of dismantling the bridge made through the above steps is very useful for dismantling the bridge 10 installed in a section where traffic is complicated because the top plate conveying device 100 is utilized, and thus demolished through the top plate conveying device 100 It is a method of secondly carrying out a task that takes a long time after first transporting the top plate 12 of the bridge 10 to a place where traffic is relatively uncomplicated.

Therefore, there is an effect of not having to install the crane 300 in a section where traffic is complicated, and only the time during which the top plate transport device 100 carries the top plate 12 needs to control the traffic, so the traffic flow is minimally affected. There is an effect that can be demolished while giving the bridge (10).

As described above, preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings. However, the present invention is not limited to the above specific examples. That is, a person having knowledge of syntactic skill in the technical field to which the present invention pertains can make a number of changes and modifications to the present invention without departing from the spirit and scope of the appended claims, and all such changes and equivalents by modification It should be considered within the scope of the present invention.

100: top plate transport device 110: body
120: wheel 130: height adjustment cylinder
140: support 150: fixing means
160: leveling means 200: loading dock
210: Gavent 300: Crane
S210: loading dock installation step S220: crane installation step
S230: transport preparation step S231: separation step
S232: Level adjustment step S233: Top plate fixing step
S240: Transport phase S250: Unloading preparation phase
S260: unloading stage

Claims (6)

delete delete delete A body 110 having a width sufficient to support the top plate 12 of the bridge 10 and a plurality of wheels 120 installed on the bottom surface of the body 110 and rotated 360 degrees relative to the body 110, It is provided between the body 110 and the wheel 120, the height adjustment cylinder 130 to raise the body 110 from the wheel 120, and is provided on both sides of the upper portion of the body 110, the horizontal adjustment means ( 160) and a method for dismantling the bridge 10 installed at a place where the top plate conveying device 100 can enter using the top plate conveying device 100 including the support 140 provided with the fixing means 150 In,
A loading dock that installs a loading dock 200 by installing a vent 210 of the same or similar height to the bridge 11 of the bridge 10 in an area adjacent to the bridge 10 and where the top plate transport device 100 can operate. Installation step (S210);
A crane installation step (S220) of installing a crane 300 to raise the top plate 12 of the bridge 10 between the tents 210 of the loading dock 200;
The upper plate 12 to be demolished is positioned between the piers 11 on which the upper plate 12 to be demolished is installed, and the height adjustment cylinder 130 is extended to open the upper plate 12 of the bridge 10 from the pier 11. The separating step (S231) for separating, the horizontal adjusting step (S232) for adjusting the level of the top plate 12 using the horizontal adjusting means 160, and the lower portion of the top plate 12 on the top of the fixing means 150 A transport preparation step (S230) consisting of a fixing step (S233) for fixing the top plate;
A moving step of moving the top plate conveying device 100 to the side of the pier 11, reducing the expanded height adjustment cylinder 130 to a length before being expanded, and then moving the top plate conveying device 100 to the loading and unloading field 200 (S240);
The height adjustment cylinder 130 is extended to raise the top plate transport apparatus 100 from the ground, and the both end portions of the top plate 12 are moved by moving the top plate transport apparatus 100 between the vents 210, thereby allowing the top 210 to be moved. Unloading preparation step to be located on the top of the (S250);
The fixing means 150 and the upper plate 12 of the bridge 10 are separated, and the height adjusting cylinder 130 is contracted, so that the upper plate 12 is separated from the upper plate transport device 100 and supported by the vent 210. Dismantling method of the bridge comprising a; unloading step (S260).
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