KR100556629B1 - Fabricated temporary junction bridge with easy construction and dismantlement and building method thereof - Google Patents

Abstract

 The present invention is the upper structure of the existing bridge without blocking the traffic and walking when stepping up the upper structure of the existing bridge in order to enlarge the passage surface of the lower surface of the bridge installed in the river or to expand the geometry of the bridge installed on the road By raising the height of the prefabricated bridges, the roads of the existing roads and bridges are connected smoothly so that the vehicle can communicate with them. It is a method for easy installation of a prefabricated connection bridge.

The prefabricated connecting bridge is installed at a certain distance on the existing road surface a plurality of height control and top plate support beam beam escape prevention device installed in pairs at regular intervals from the alternating side of the existing bridge at a predetermined distance. Connected to the existing road surface and the existing bridge deck while being connected to the top of the main body while installing a plurality of the top of the main body between the height adjustment and the upper plate support horizontal beam separation prevention device installed at a certain distance on the existing road surface In order to install the entrance and exit top plate respectively, the existing bridge deck is gradually installed in the height adjustment and the top plate support horizontal beam detachment prevention device installed at a plurality of predetermined distances in the direction of the arrow of FIG. Existing bridge lifted by operating each height adjusting hydraulic jack and auxiliary hydraulic jack Existing bridges that are elevated above the main body part and the entrance / exit entrance step by step while adjusting the height of the height adjusting hydraulic jack and the auxiliary hydraulic jack so as to be different from each other so that the height of the upper plate and the existing road surface can be smoothly connected. By allowing the top plate and the existing road surface to be smoothly connected, the existing bridge is to be elevated without blocking vehicle traffic and walking when climbing the existing bridge.

In another embodiment, in order to smoothly handle traffic according to the rise of the existing bridge deck, the existing road surface and prefabricated bridges are installed, and the earth wall H beam is inserted and installed at regular intervals on the driveway center line of the existing road. The earth wall is installed to a certain height between the earth wall H beam, and then the earth wall is installed. Then, the height adjustment and the top plate supporting horizontal beam separation prevention device are installed at regular intervals, but are installed in pairs at regular intervals around the earth wall. By installing a top support horizontal beam between the height adjustment and the top plate supporting beam beam separation prevention device to be installed in pairs on both sides of the existing road, the top plate support is centered around the driveway center line where the earth wall H beam is installed The upper plate supporting horizontal beam connecting portion to install the upper plate supporting horizontal beam connecting portion that can interconnect the low beam The beams are installed by the top plate supporters by interconnecting the wires, and the prefabricated connection bridges are installed without blocking the vehicle and the traffic, and the steel plates are installed inside the height adjustment and top plate support beam beam prevention device installed on both sides of the existing road. When the retaining wall is installed, and the ascending of the existing bridge deck is completed, the one side of the prefabricated bridge bridges installed on both sides of the existing roadway center line of the existing road is removed, and then the elevated bridge deck is raised using earth and sand. To form a connection road by filling the ground to maintain a constant slope with the height and the existing road surface, and then pave the road surface to form a road surface, and then remove the prefabricated connecting bridge installed on the other side, The wall H beam is removed while the land is filled to allow smooth connection between the existing road surface and the existing bridge deck. To form the road to the next package to be opened to use the whole road surface of the road construction a traffic connection.

At this time, in order to prevent the shift is carried out while raising the existing bridge top plate, a concrete support block, which is an anti-conduction prevention device, is installed in the embankment of the earth and sand to install the connection road, and the anchorage is installed on the upper part of the shift. The anchorages installed on the concrete support block are connected to each other by a PC steel wire, and then the tensioners on both sides are tensioned to prevent the shift from being conducted.

On the other hand, if you want to dismantle the prefabricated connection bridge, the height adjustment and the upper plate support horizontal beam separation prevention device and the main body and the entrance and exit top plate is connected to each other prefabricated easily when the disassembly of the device and the top plate connected to the assembly The prefabricated connection bridge can be dismantled, so the installation and dismantling of the prefabricated connection bridge can be very easy, which can shorten the period for installing the bridge, and can be recycled the dismantled material. Is how to install.

Description

Fabricated temporary junction bridge with easy construction and dismantlement and building method             

1 is a view showing that the prefabricated cross-linking bridge of the present invention is connected to the existing bridge according to the impression of the existing bridge top plate as a whole.

Figure 2 is a plan view of the prefabricated bridge bridge of Figure 1 from above.

3 shows a detail of section A-A of FIG. 2;

Figure 4 is a view showing the main body top plate of the present invention from the side.

5 is a plan view of FIG. 4.

Figure 6 is a side view showing the entrance and exit top plate of the present invention.

7 is a plan view of FIG.

8 is a view showing the height adjustment and the upper plate support horizontal beam departure prevention device of the present invention.

9 is a view showing in detail the connecting portion connected to the top plate transverse beam of the present invention and the main body portion or entrance entrance top plate.

Figure 10 is a view showing a top plate horizontal beam installed in the height adjustment and the upper plate support horizontal beam departure prevention device of the present invention from above.

Figure 11 is a plan view showing another installation embodiment of the prefabricated connection bridge of the present invention.

12 is a side view showing the prefabricated cross-linking of FIG.

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

10: Top of existing bridge 11: Existing road surface

12: shift 13: vertical part

20: prefabricated connection bridge

30: height adjustment and top plate support beam separation prevention device

31: top support horizontal beam 32: support steel plate

33: support beam 34: height adjustment hydraulic jack

35: height adjustment and top plate support horizontal beam separation prevention support

36: auxiliary hydraulic jack for height adjustment 37: horizontal beam connection

38: hydraulic jack support for height adjustment 39: auxiliary support for height adjustment

40: connection part 41: connection steel bar

42: top plate iron plate 43: top plate hook groove

44: upper plate support steel plate 45: upper plate support connecting groove

46: fixing nut 47: brace

60: main body top plate 61: top cover iron plate

62: main beam 63: auxiliary horizontal beam

64: main street beam 65: the upper support beam beam connecting portion

66 earth wall H beam 67 earth plate

68: earth wall

70: entrance entrance top plate 71: inclined portion

72: floor support horizontal beam

80: shift prevention device 81: concrete support block

82: anchorage 83: through hole

84: PC steel wire

       The present invention increases the amount of flowing water under the bridge due to heavy rains on the bridge made for the purpose of overcoming obstacles such as traffic, rivers, rivers, valleys, potholes, etc. As a result, such as the increase of the height of the vehicle passing under the bridge or under the bridge, the necessity of the lifting of the bridge deck to increase the passage surface and the lifting space of the bridge increases the bridge and the vehicle and the pedestrian continue to use the existing bridge. The present invention relates to a method of installing a prefabricated bridge bridge.

       The prefabricated connecting bridge is installed at a certain distance on the existing road surface a plurality of height control and top plate support beam beam escape prevention device installed in pairs at regular intervals from the alternating side of the existing bridge at a predetermined distance. Connected to the existing road surface and the existing bridge deck while being connected to the top of the main body while installing a plurality of the top of the main body between the height adjustment and the upper plate support horizontal beam separation prevention device installed at a certain distance on the existing road surface In order to connect and install the entrance and exit top plate respectively, and then ascend the existing bridge top plate gradually, each of the height adjustment hydraulic jacks and auxiliary installed in the height adjustment and the top plate support horizontal beam separation prevention device installed a plurality of at a certain distance Height of existing bridge deck and elevated road surface by operating hydraulic jack The height of the height adjustment hydraulic jack and the auxiliary hydraulic jack so as to be smoothly connected to each other while stepping up the main body top plate and the entrance and exit top plate in phases to smoothly be connected to the existing bridge top plate and the existing road surface smoothly. In order to be able to ascend the existing bridge so as to raise the existing bridge without blocking the traffic and walking of the existing bridge is to install a prefabricated bridge bridge.

       Another method relates to the installation of prefabricated bridge bridges for installing elevated existing bridge decks and connecting roads that can be connected to existing road surfaces smoothly. The earth wall H beam is inserted at regular intervals in the driveway center line of existing roads. After installation, the earth plate is installed to a certain height between the earth wall H beam, and the earth wall is installed, and then the height adjustment and the upper plate support horizontal beam separation prevention device are installed at regular intervals, but at regular intervals around the earth wall. A top support horizontal beam is installed between the height adjustment and the top support horizontal beam detachment preventing device installed in pairs on both sides of the existing road by installing a pair, with the earthquake wall H beam inserted into the center of the driveway center line. By installing the upper plate supporting horizontal beam connecting portion which can interconnect the upper plate supporting horizontal beam, The beams are installed by the top plate supporters by interconnecting them using the horizontal plate connecting beams, and the prefabricated connecting bridges are installed without blocking the vehicle and traffic, and the height adjustment and the top plate support beam beams installed in pairs on both sides of the existing road. Install the retaining wall on the inside of the prevention device using a steel plate, and when the lifting of the existing bridge top plate is completed, remove one side of the prefabricated connecting bridges installed on both sides around the driveway center line of the existing road, Form the connection road by filling the height of the elevated bridge top plate and the existing road surface to maintain a constant inclination, then paving and forming the road surface to open traffic, and then the prefabricated connection bridge installed on the other side Demolition is carried out while removing the installed H-beams of the earth walls to smooth the existing road surfaces and existing bridge decks. It is to the formation of the access road to allow access to the next Package to open the road to use the entire surface of the construction access road to traffic.

At this time, in order to prevent the shift is carried out while raising the existing bridge top plate, a concrete support block, which is an anti-conduction prevention device, is installed in the embankment of the earth and sand to install the connection road, and the anchorage is installed on the upper part of the shift. The anchorages installed on the concrete support block are connected to each other by a PC steel wire, and then the tensioners on both sides are tensioned to prevent the shift from being conducted.

       The height adjustment and the upper plate support horizontal beam separation prevention support device is installed in a plurality of pairs on the existing road surface at regular intervals, the height adjustment and the upper plate support horizontal beam is fixed to the left and right of the existing road surface as a pair Install on the support steel plate at intervals, install the brace to support the height adjustment and the top plate support beam separation prevention support, install the hydraulic jack support for height adjustment to the outside and install the hydraulic jack and support beam for height adjustment thereon The top plate supporting horizontal beam is installed on the height adjustment hydraulic jack and the support beam installed on the height adjustment hydraulic jack support while being installed on the height adjustment auxiliary hydraulic jack installed between the height adjustment and the top plate support horizontal beam separation prevention support pairs on the left and right of the existing road. Make sure that both ends of the top support horizontal beam are placed, Install a plurality of height adjustment auxiliary support on the support plate in the center position of the height adjustment and the upper plate support horizontal beam separation prevention support installed on both sides of the existing road, and install the auxiliary hydraulic jack for height adjustment thereon and install the support beam thereon The height adjustment and the upper plate support horizontal beam is prevented from being installed above the top support horizontal beam installed on the support to prevent the separation of the height at regular intervals so as to be connected to the existing road surface naturally as shown in Figure 1 Adjusting and installing the top plate supporting beam separation prevention device.

The height control and the upper plate support horizontal beam is installed between the upper and lower support beam horizontally installed between the main body part and the hinge shaft to the left and right to connect the existing bridge deck and the existing road surface respectively The control and top plate support beam detachment prevention device is provided with an entrance entrance top plate so that the elevated bridge top plate and the existing road surface are connected so that the prefabricated bridge bridge can be installed without blocking traffic. It is about a method.

       When the prefabricated connection bridge is to be dismantled, the height adjustment and the upper plate supporting beam separation prevention device and the main body and the entrance / exit top plate are connected to each other in a prefabricated manner. The connection bridge can be dismantled, so that the prefabricated connection bridge can be easily installed and dismantled, thereby shortening the period for installing and dismantling the bridge, and dismantling the dismantled material.

       An object of the present invention is to raise the bridge step by step without raising the vehicle and pedestrians passing on the bridge while raising the existing bridge deck to increase the geometry or the passage surface of the bridge to increase the bridge or repair the bridge device, etc. In order to repair the bridge to provide a method of installing a prefabricated connecting bridge that is connected to the existing road surface while the existing bridge top plate is elevated.

       Conventional bridge superstructure lift is to raise the bridge superstructure by fixing the brackets with anchor bolts to the bridge or bridge under the bridge under the control of the vehicle and the passer-by passing through the top of the bridge to raise the bridge superstructure or A method of elevating a bridge upper structure by installing a temporary vent in the lower part and installing a hydraulic jack on the lower part.In this case, when a vehicle and a pedestrian pass through the upper part of the bridge to control the bridge are inconvenient, the vehicle and the pedestrian must bypass the traffic. In addition, when additional roads and bridges are installed to secure a bypass passage for vehicles and passers-by, additional roads and bridges are required to be excessively installed, and these roads and bridges are not prefabricated. And it takes a long time to dismantle, The wasteful factor of the material exists because the material cannot be recycled.

Therefore, the present invention has been proposed to improve the above-mentioned problems, the lack of a communication surface or the lower space of the lower surface of the bridge is a problem in the flow of running water or a vehicle for the purpose of expanding the communication surface and the lower space When lifting the existing bridge top plate, the main body plate installed on the height adjustment and the top plate support beam detachment prevention device by the height adjustment hydraulic jack installed on the height adjustment and the support plate beam detachment prevention device installed in a plurality at regular intervals on the existing road surface. The prefabricated bridge bridge is installed to allow the passage of vehicles and the pedestrians' pedestrians by inclinedly connecting the existing bridge deck and the existing road surface which are elevated to allow the passage of vehicles and pedestrians while gradually increasing the entrance and exit deck. Or one side and the other side of the installed prefabricated bridge bridge It is to provide a connection road installation method for smoothly connecting the existing bridge deck and the existing road surface raised by laying soil with soil while being demolished.

       The present invention is to elevate the top of the existing bridge plate to expand the communication surface and the geometry of all kinds of bridges, and at the same time step by using the height adjustment hydraulic jack installed in the height adjustment and top plate support beam separation prevention device The method of installing the prefabricated bridge bridge 20 and the installed prefabricated bridge bridge are gradually removed so that the soil is removed from the earth. As a method for installing a connection road that can be smoothly connected to the existing bridge top plate and the existing road surface,

       The prefabricated connection bridge 20 has a plurality of height adjustment and top plate support beam beam departure prevention device 30 installed in pairs at regular intervals on the existing road surface 11 at a predetermined distance from the side of the bridge 12 of the existing bridge. Installed at a predetermined distance on the existing road surface 11, and the main body plate between the height adjustment and the upper plate support horizontal beam departure prevention device 30 installed in a plurality at a predetermined distance to the existing road surface (11) 60 and a plurality of installation of the entrance and exit upper plate 70 in order to connect to the existing road surface 11 and the existing bridge top plate (10) while being connected to the main body upper plate (60) after the existing bridge As the upper plate 10 is gradually raised, the respective hydraulic jacks 34 and the auxiliary hydraulic jacks 36 for height adjustment and the upper plate support horizontal beam detachment prevention device 30 installed at a plurality of predetermined distances are operated. Ha The main body part step by step while adjusting the height of the height-adjusting hydraulic jack 34 and the auxiliary hydraulic jack 36 so as to be smoothly connected to the height of the elevated bridge top plate 10 and the existing road surface 11, respectively. By elevating the upper plate 60 and the entrance and exit upper plate 70 to allow the elevated bridge top plate 10 and the existing road surface 11 to be smoothly connected to each other, the vehicle passes and walks when the existing bridge is elevated. It is to install the connection bridge 20 in a prefabricated manner so that the existing bridge can be elevated without blocking.

       In another embodiment, as the connection road is installed to smoothly connect the elevated existing bridge plate 10 and the existing road surface 11, the earth wall H with a predetermined interval on the roadway centerline of the existing road 11 After the beam 66 is inserted and installed, the earth plate 67 is installed to a certain height between the earth wall H beam 66 and the earth wall 68 is installed. Preventing device 30 is installed, the height adjustment and the upper plate support horizontal beam separation prevention device 30 to be installed in pairs on both sides of the existing road by installing a pair at regular intervals around the earth wall (68) A top plate supporting horizontal beam 31 is installed between the top plate supporting horizontal beams and the top plate supporting horizontal beams 31 which are interconnected with respect to the driveway center line (not shown) in which the earth wall H beam 66 is installed. Install the connector 65 By using the upper plate supporting horizontal beam connecting portion 65 to install the beam 31 as the upper plate support, and install the prefabricated connecting bridge 20 without blocking the vehicle and traffic, and then to the existing road A retaining wall (not shown) is installed on the inner side of the height control and the upper plate support horizontal beam detachment preventing device 30 installed in pairs on both sides, and the elevation of the existing bridge top plate 10 is completed. One side of the prefabricated connecting bridge 20 installed on both sides of the roadway center line of the road is demolished, and then the soil is maintained using the earth and sand to maintain a constant slope with the existing road surface 11 and the existing road surface 11. After forming the connection road (not shown), and then paved to form the road surface to open the traffic, and then to remove the prefabricated connection bridge 20 installed on the other side, the earth wall H beam 66 already installed Demolish Conduct up to fill to install the connecting road to be seamlessly connected to the existing road surface 11 to the existing bridge deck (10).

At this time, in order to prevent the shift 12 from being conducted while elevating the existing bridge top plate 10, the concrete support block 81, which is an anti-conduction prevention device 80, is built in the earth and sand for the installation of the connection road. Installed in the upper part of the shift 12, and the fixing device 82 installed in the concrete support block 81 and the PC steel wire 84 and connected to each other, and then the fixing devices 82 on both sides Tension to prevent the shift 12 from overturning. The height adjustment and the upper plate support horizontal beam separation prevention support device 30 is installed in a plurality of pairs on the existing road surface at regular intervals, the height adjustment and the upper plate support horizontal beam separation prevention support (35) as a pair It is installed on the support iron plate 32 at regular intervals to the left and right of the road surface 11, and installs a brace 47 to support the height adjustment and the upper plate support horizontal beam separation prevention support 35, and then the height to the outside thereof. The hydraulic jack support for adjustment 38 is installed, and the hydraulic jack 34 and the support beam 33 for height adjustment are installed thereon, and then the top support horizontal beam 31 is installed in pairs on the left and right of the existing road. The upper plate on the height adjustment hydraulic jack 34 and the support beam 33 installed on the height adjustment hydraulic jack support 38 while being installed on the height adjustment auxiliary hydraulic jack 36 installed between the beam separation prevention support 35. After supporting both side ends of the support horizontal beam 31, and supporting a plurality of height adjustment auxiliary support 39 in the center position of the height adjustment and the upper plate support horizontal beam separation prevention support 35 installed on both sides of the existing road. The upper plate is installed on the base plate 32, the auxiliary hydraulic jack 36 for height adjustment is installed thereon, and the support beam 33 is installed thereon, and the upper plate installed on the height adjustment and top plate support horizontal beam detachment prevention support 35 thereon. As the support horizontal beam 31 is installed, as shown in FIG. 1, as the existing bridge deck 10 is elevated, the height adjustment and the upper support beam are spaced at regular intervals so as to be naturally connected to the existing road surface 11. Install the separation prevention device (30).

       The main body upper plate 60 made of a constant size on the left and right around the top support horizontal beam 31 installed between the height adjustment and the top plate support horizontal beam separation prevention device 30 installed in a plurality of longitudinal directions in a pair It is connected to the hinge axis, and the height adjustment and the upper plate support horizontal beam separation prevention device 30 connected to the existing bridge top plate 10 and the existing road surface 11, respectively, of the main body upper plate 60 Produced to the same size, but the inclined portion 71 is formed on the portion in contact with the existing bridge top plate 10 and the existing road surface 11 to install the entrance entrance top plate 70 so that it can be connected smoothly to the above rise The bridge deck plate and the existing road surface is connected to the prefabricated connecting bridge 20 to install the bridge so as to be able to work on the bridge without blocking the passage.

       The installation method of the prefabricated connection bridge is as follows.

       The height adjustment and the upper plate support horizontal beam detachment are installed in pairs while the height adjustment and the upper plate support horizontal beam detachment prevention device 30 are installed in pairs at regular intervals on the side of the bridge 12 supporting the existing bridge top plate 10. Installing a plurality of prevention devices at regular intervals in the longitudinal direction of the existing road;

       Installing the upper plate supporting horizontal beams 31 between the height adjustment and the upper plate supporting horizontal beam detachment preventing device 30 installed in pairs at regular intervals in the longitudinal direction on the existing road surface 11;

       The upper plate supporting horizontal beam 31 installed in the height adjustment and the upper plate supporting horizontal beam detachment preventing device 30 installed in connection with the shift 12 side and the existing road surface 11 supporting the existing bridge upper plate 10. The upper plate support horizontal beam 31 installed in the height adjustment and the upper plate support horizontal beam separation prevention device 30 installed in the other portion while hinged to the entrance entrance upper plate 70 by using the connecting steel bar 41 on the left and right sides of the. Hingedly connecting the main body upper plate 60 to the left and right using a connecting steel bar 41;

       As the existing bridge top plate 10 is gradually raised, the entrance entrance top plate 70 connected to the height control and the top plate support beam detachment prevention device 30 is elevated, so that the road surface 11 is extended in the longitudinal direction. Using the height adjustment hydraulic jack 34 installed in the plurality of height adjustment and the upper plate support horizontal beam separation prevention device 30 at regular intervals smoothly entering and exiting the prefabricated connection bridge 20 on the existing road surface 11. Introducing a hydraulic force in multiple stages to the height adjusting hydraulic jack (34) so as to form an inclination such that the upper portion of the portion (70) and the main body portion (60) are connected to form a natural inclination portion; And

       After the prefabricated bridge bridge 20 is connected to the elevated bridge plate 10 and the existing road surface 11 is elevated, and the traffic is continued, the maintenance work is completed after completing the repair or ascension work for the existing bridge When completed, the prefabricated connection bridge 20 is to be dismantled again after the lowering operation, or when the bridge is elevated so as to be connected to the existing bridge top plate 10 to be smoothly connected to the existing road surface 11. It is characterized by consisting of the step of dismantling the prefabricated bridge bridge while forming the road surface by paving with asphalt and work.

       As another embodiment, the installation method is

       The earth wall H beam 66 is inserted and installed at a predetermined distance from the driveway center line of the existing road surface 11, and the earth wall 67 is installed between the earth wall H beam 66 and the earth wall 68 by a predetermined height. Installing it;

       Installing a height adjustment and the upper plate support horizontal beam departure prevention device 30 at regular intervals on both sides of the existing road surface, the pair of spaces at regular intervals around the earth wall (68);

       The upper plate supporting horizontal beam 31 is installed between the height adjustment and the upper plate supporting horizontal beam detachment preventing device 30 installed at a position opposite to each other, and the upper plate supporting horizontal beam 31 is horizontally connected to the upper plate supporting horizontal beam 31. Installing a beam connecting part 65 so as to be separated from the earth wall H beam 66 and then interconnecting the same using the upper plate supporting horizontal beam connecting part 65;

       Installing the prefabricated connection bridge 20 after the installation is completed without blocking the vehicle and the traffic;

       Installing a retaining wall (not shown) inside the height adjustment and the upper plate support horizontal beam separation prevention device 30 installed in pairs on both sides of the existing road;

       When the elevation of the existing bridge top plate 10 is completed, one side of the prefabricated connection bridge 20 installed on both sides around the driveway center line of the existing road is removed, and then the elevated existing bridge top plate 10 using earth and sand. Forming a road surface by filling and compacting and paving to maintain a constant slope with a height of the existing road surface 11;

       Remove the prefabricated connecting bridge 20 installed on the other side, and carry out the fillet while removing the earth wall 68 already installed, the connection road so that the existing road surface 11 and the existing bridge top plate 10 can be smoothly connected. It is characterized by installing it.

At this time, in order to prevent the shift 12 from being conducted while elevating the existing bridge top plate 10, the concrete support block 81, which is an anti-conduction prevention device 80, is built in the earth and sand for the installation of the connection road. And a fixing unit 82 installed at the vertical portion 13 of the alternating portion of the shift 12 and the fixing unit 82 installed at the concrete support block 81 with a PC steel wire 84, and then After fixing the fixing fixtures 82 on both sides, the road surface may be compacted and paved to prevent the shift 12 from falling.

The installation method of another connection road is to dismantle the prefabricated bridge bridge 20 installed on both sides without removing the prefabricated bridge bridge 20 step by step while simultaneously filling and compacting and opening the paved road to traffic. It may be.

       Hereinafter, the configuration and operation of the present invention by the accompanying drawings in detail as follows.

       1 is a view showing that the prefabricated connecting bridge of the present invention is connected to the existing bridge according to the elevation of the existing bridge deck, the existing road surface 11 of a predetermined distance in the longitudinal direction from the side of the bridge 12 of the existing bridge And a plurality of height adjustment and the upper plate support horizontal beam separation prevention device 30 in pairs at regular intervals, and the height adjustment and the upper plate support horizontal beam separation prevention device 30 installed in pairs at regular intervals. Mounted across the upper support horizontal beam 31 therebetween and hinged connection using a main body 60 and a connecting steel bar 41 having a predetermined area on the left and right sides of the upper horizontal support beam (31) ( 40 is installed and connected to the main body upper plate 60 and the entrance entrance upper plate 70 to adjust the height and the upper plate support horizontal beam, respectively, in order to connect to the existing road surface 11 and the existing bridge top plate 10, respectively. After installing the upper plate support horizontal beam 31 and the hinged connecting portion 41 installed in the anti-vibration device 30, the height adjustment of the plurality of installed at a predetermined distance by gradually raising the existing bridge deck 10 And the height of the existing bridge deck 10 elevated in the direction of the arrow of the present invention by operating the hydraulic jack 34 and the auxiliary hydraulic jack 36 for each height adjustment installed in the upper plate supporting horizontal beam detachment preventing device 30 in multiple stages. Step by elevating the main body upper plate 60 and the entry and exit upper plate 70 step by step while adjusting the height of the height-adjusting hydraulic jack and the auxiliary hydraulic jack so as to be smoothly connected to the surface 11, the elevated existing bridge It is possible to have a slope so that the top plate and the existing road surface can be connected smoothly so that it can be used for traffic, without blocking the traffic and walking when climbing the existing bridge. After seungsang the zone bridge it will have installed a connection bridging the prefabricated for installation at a repair or seungsang the bridge to the existing bridge.

       2 is a plan view of the prefabricated connection bridge of FIG. 1 from above, wherein the height adjustment and the upper plate support horizontal beam detachment preventing device 30 are supported by the left and right sides of the main body upper plate 60 and the entrance / exit upper plate 70. As the bridge top plate 10 rises, the height is adjusted by using the height adjustment hydraulic jack 34 and the auxiliary hydraulic jack 36 installed on the height adjustment and the top plate support beam separation prevention device 30. It is installed to be connected to the surface 11, as already mentioned in Figure 1, so that the step between the existing road surface 11 and the existing bridge deck 10 can be smoothly connected while forming a slope to the existing While elevating the bridge will be able to elevate the existing bridge without blocking traffic.

The support iron plate 32 is installed on the ground of the surface of the shift 12 supporting the existing bridge deck 10, and the hydraulic jack support 38 for height adjustment is installed thereon, and the hydraulic jack 34 for height adjustment is installed thereon. Then install a support beam 33 thereon, and the height adjustment to the left and right of the height adjustment hydraulic jack support 38 to the left and right to support the beam separation prevention support 35 to install the support brace (47) ) And before and after, the height adjustment and the upper plate support horizontal beam beam separation prevention device 30 installed in a pair of height adjustment and the upper hydraulic support jack 36 for height adjustment on the upper portion of the support beam separation prevention beam support (35) as a pair. After installing a plurality of height adjustment and the upper plate support horizontal beam separation prevention device 30 installed in a pair at regular intervals in the longitudinal direction of the existing road surface 11 is installed on the height adjustment hydraulic jack support 38 installed in pairs. The upper plate support horizontal beam 31 is installed between the height adjustment and the upper plate support horizontal beam detachment support zone 35 installed in pairs on the left and right inside the support beam 33 and the hydraulic jack support 38 for height adjustment, Being in close contact with the lower surface of the upper plate support horizontal beam 31 by installing a pair of height adjustment auxiliary support 39 in the center lower portion of the upper plate support horizontal beam 31 and an auxiliary hydraulic jack 36 for height adjustment thereon. The height adjustment and the upper plate support horizontal beam separation prevention device 30 is installed so that the support beam 33 can be installed.

       The height adjustment and the upper plate support horizontal beam 31 is installed on the left and right of the upper plate support horizontal beam 31 installed on the beam separation prevention device 30 hinged, but the alternating side 12 and the existing The entrance surface upper plate 70 is installed on the road surface 11, and the main body upper plate 60 is installed on the other parts, respectively, and then the height is adjusted as the existing bridge upper plate 10 is stepped up. And using the height adjusting hydraulic jack 34 and the auxiliary hydraulic jack 36 installed in the upper plate support horizontal beam detachment preventing device 30, raising the height in the direction of the arrow of FIG. Existing road surface 11 and to form a slope to be connected smoothly.

While connecting the main body upper plate 60 and the entrance entrance upper plate 70 made of a predetermined area on the left and right of the upper plate support horizontal beam 31 mounted between the height adjustment and the upper plate support horizontal beam separation prevention support 35. The connecting portion 40 is formed to be hinged using the connecting steel bar 41, and the upper plate supporting horizontal beam 31 can maintain a length corresponding to the width of the upper plate of the main body 60 and the entrance / exit 70. The horizontal beam connecting portion 31 is formed so as to extend the length.

Between the height adjustment and the upper plate support horizontal beam separation prevention support 35 is installed between the height adjustment and the upper plate support horizontal beam separation prevention support 35 installed in pairs to prevent separation To be installed on the

The height adjustment hydraulic jack 34 and the auxiliary hydraulic jack 36 can be applied to any device capable of lifting the structure such as screw jack.

       3 is a cross-sectional view of the AA of FIG. 2 in detail, a pair of support steel plates (left and right) at regular intervals on the ground of the alternating surface 12 and the existing road surface 11 supporting the existing bridge deck (10) ( 32), the height adjustment hydraulic jack support 38 is installed thereon, the height adjustment hydraulic jack 34 is installed thereon, the support beam 33 is installed thereon, and the height adjustment hydraulic jack support 38 is installed thereon. The height adjustment and the upper plate support horizontal beam separation prevention support 35 to the inside of the) and install the support before and after the support (47) that can support it, the height adjustment and the upper plate support horizontal beam separation prevention support (35) Install a pair of height adjustment and upper plate support horizontal beam separation prevention device 30 is installed in the upper part of the height adjustment auxiliary hydraulic jack 36,

The pair is installed in the pair of right and left in the inner side of the support beam 33 and the height adjustment hydraulic jack support 38 installed on the height-adjusting hydraulic jack support 38 installed in a plurality at regular intervals in the longitudinal direction of the existing road surface. The upper plate support horizontal beam 31 is installed between the height adjustment and the upper plate support horizontal beam separation preventing support 35 to be mounted between the support beam 33 and the height adjustment and the upper plate support horizontal beam detachment preventing support 35. And a pair of height adjustment auxiliary supports 39 are installed on the support iron plate 32 at the center lower portion of the top support horizontal beam 31, and the height adjustment auxiliary hydraulic jacks 36 are installed thereon. The support beam 33 is installed to be in close contact with the bottom surface of the beam 31.

The upper plate supporting horizontal beam 31 is made of I-type steel, but the upper plate supporting steel plate 44 is installed at regular intervals in the longitudinal direction on the left and right sides of the I-type steel plate, but is connected to the upper portion of the upper plate supporting steel plate 44. It is to form a semi-circular top plate support connecting groove 45 that can be mounted to the steel bar 41, and to install the top plate cover plate 61 on the I-type steel. The top plate support horizontal beam 31 is manufactured so as to be mounted between the height adjustment and the top plate support beam detachment prevention support 35 and the hydraulic jack support 38 for height adjustment, and the top plate support connecting groove 45 and FIG. 4. And a connecting portion 40 which is hinged by inserting a connecting steel bar 41 into a connecting groove formed by the upper hook connecting groove 43 formed on the main body 60 and the entry and exit portion 70 described above with reference to FIG. 6. To form. In this case, after connecting the connecting steel bar 41 integrally to the upper plate supporting connecting groove 45 and the upper plate hook connecting groove 43, the connecting steel bar 41 is separated and fastened to each other by a fixing nut 46. Prevent the rods from falling off.

The reason for the connection by the connecting steel bar is that the hinge part is formed when the connecting steel bar is connected, the existing bridge top plate is elevated, and the main body part 60 and the entrance part 70 may be elevated in different stages. This is to prevent diffraction at each connecting portion 40, that is, freely rotatable, so that heights are different from each other to form a step.

The height adjustment auxiliary support 39 installed at the center of the upper plate support horizontal beam 31 supports the upper plate support horizontal beam 31 to adjust the height while forming the prefabricated fastening bridge 20. This is to prevent the sag or sag when a moving load of weight is applied by supporting the center of the upper part of the upper part 60 and the entry / exit part 70.

       4 and 5 is a view showing the main body top plate of the present invention from the side and the plane, the hinge is installed on the left and right of the top plate support horizontal beam 31 installed in the height adjustment and the top plate support beam separation prevention device 30 inclined surface It is to install to form a bottom plate to be used for transportation.

The main body upper plate 60 is a bottom plate for use in traffic, and the main beam 62 and the auxiliary horizontal beam 63 are connected to each other in a lattice shape to produce a predetermined area, and the upper portion of the main beam and the auxiliary horizontal beam The upper plate cover iron plate 61 is installed, and a plurality of main horizontal beams 64 are installed at the lower surface of the main body upper plate 60, and both sides of the lower surface of the main body upper plate 60, that is, the upper plate supporter. The upper plate hanger plate 42 having semi-circular upper plate hanger connecting grooves 43 is attached to the main street beams 64 installed at portions connected to both sides of the low beam 31.

       6 and 7 are views showing the entrance and exit top plate of the present invention from the side and the plane, connecting the main beam 62 and the auxiliary horizontal beam 63 in a lattice shape to produce a predetermined area, the main beam and the auxiliary horizontal beam The upper plate cover iron plate 61 is installed on the upper portion of the lower portion of the existing bridge top plate 10 and the existing road surface 11 to be installed on the floor 11, a plurality of floor support horizontal beams 72, A top plate hanger in which a semicircular top plate hook connection groove 43 is formed in one bottom surface of the lower portion 70, that is, a bottom support horizontal beam 72 installed at a portion connected to one side of the top support horizontal beam 31. The steel plate 42 is attached, and the other side of the entrance entrance upper plate 70 has a predetermined inclined portion 71 formed at a lower portion thereof, so that the inclined portion is mounted on the existing bridge top plate and the existing road surface so that a step is not formed. Do not

      8 is a view showing the height adjustment and the upper plate support horizontal beam departure prevention device of the present invention, at regular intervals on the ground of the alternating surface 12 and the existing road surface 11 supporting the existing bridge deck (10). Install a pair of support steel plates 32 on the left and right, and install the hydraulic jack support 38 for height adjustment thereon, install the hydraulic jack 34 for height adjustment thereon, and then install the support beam 33 thereon, Install the height adjustment and the upper plate support horizontal beam escape prevention support 35 to the left and right to the inside of the height adjustment hydraulic jack support 38 and before and after the braces 47 that can support it, the height adjustment and the upper plate support A pair of height adjustment and top plate support beam separation prevention device 30 having a height adjustment auxiliary hydraulic jack 36 installed on the upper portion of the low beam separation prevention support 35 is installed in pairs,

The pair is installed in the pair of right and left in the inner side of the support beam 33 and the height adjustment hydraulic jack support 38 installed on the height-adjusting hydraulic jack support 38 installed in a plurality at regular intervals in the longitudinal direction of the existing road surface. The upper plate support horizontal beam 31 is installed between the height adjustment and the upper plate support horizontal beam separation preventing support 35 to be mounted between the support beam 33 and the height adjustment and the upper plate support horizontal beam detachment preventing support 35. It was made possible.

The upper plate support horizontal beam 31 is made of I-type steel, but when it is necessary to reinforce the rigidity can be used by connecting a plurality of up and down, the upper plate support at regular intervals in the longitudinal direction on the left and right of the I-type steel Install the iron plate 44 to form a semicircular upper plate supporting groove 45 to mount the connecting steel bar 41 on the upper side of the upper plate supporting steel plate 44, the upper plate cover iron plate on the I-type steel (61) to be installed.

The top plate support horizontal beam 31 is thus installed between the height adjustment and the top plate support beam separation prevention support 35 is installed to prevent separation.

At the same time between the height adjustment and the upper plate support horizontal beam separation prevention support 35 and the height adjustment of the hydraulic jack support 38 at the same time, the upper plate support connecting groove 45 and the main body 60 and the entrance and exit portion 70 in the upper plate By inserting the connecting steel bar 41 into the connecting groove formed by the upper plate hook connecting groove 43 to be formed to form a hinge connection portion (40).

       9 is a view showing in detail the connecting portion connected to the upper plate supporting horizontal beam and the main body portion or the entrance entrance upper plate of the present invention, the height adjustment and the upper plate support horizontal beam escape prevention support 35 and the height adjustment hydraulic jack support 38 above The top plate supporting horizontal beam 31 is shown on the left and right of the main body 60 and the entrance and exit portion 70 is formed hinged connecting portion 40.

A connecting steel bar 41 is installed in the upper plate supporting connecting groove 45 formed in the upper plate supporting iron plate 44 provided at regular intervals on the left and right sides of the upper plate supporting horizontal beam 31, and the main body upper plate 60 thereon. Or the hinge plate connecting grooves (43) formed on the top plate hanger plate 42 formed on the upper plate hanger iron plate 42 installed on the lower surface of the entrance and exit plate 70 is formed to be connected hinged.

       10 is a view showing a state in which the upper plate supporting horizontal beam is installed in the height adjustment and the upper plate support horizontal beam departure prevention device of the present invention, and already described in detail in Figures 2 and 3 will not be described in detail. However, the upper plate support horizontal beam 31 is to be mounted on the height adjustment hydraulic jack support 38 installed on the outside while being installed between the height adjustment and the upper plate support horizontal beam escape prevention device 30, the top plate support The height adjustment auxiliary support 39 is installed at the center lower part of the beam 31 to assist in strengthening the strength, and the main body part 60 and the entrance and exit part 70 on the left and right sides of the upper support beam 31. Hinges are connected to each other to form a road surface which is capable of forming a vehicle and a walking road as a whole, while the existing bridge top plate 10 is elevated and is connected smoothly while forming a predetermined slope with the existing bridge top plate and the existing road surface 11. It is to be able to install the repaired and elevated bridge through the elevation of the bridge while allowing the bridge to pass even during the ascension construction of the bridge.

       11 is a plan view showing another installation of the prefabricated connection bridge of the present invention in a plan view. The earth wall H beam 66 is inserted into and installed at a predetermined distance from the driveway center line of the existing road surface 11. The earth plate 67 is installed to a certain height between the beam 66 and the earth wall 68 to be installed, and the height adjustment and the upper plate support horizontal beam detachment prevention device 30 are provided at regular intervals on both sides of the existing road surface. To install, but to install a plurality in pairs at regular intervals around the earth wall (68).

       Next, the upper plate supporting horizontal beam 31 is installed between the height adjustment and the upper plate supporting horizontal beam detachment preventing device installed at the opposite positions of the pair, and the upper plate supporting horizontal beam 31 on both sides of the earth wall. Each of them is installed separately and connected to each other using the upper plate supporting horizontal beam connecting portion (65).

       In this connection, the existing bridge top plate 10 is elevated in the future according to the height of the existing bridge top plate 10, the entrance entrance top plate 70, which is one side of the prefabricated connection bridge 20, the elevated 12 is connected, and when the entrance and exit upper plate 70 of the prefabricated connecting bridge 20 of the other end is installed on the existing road surface 11, the center line of the existing road surface is not blocked without blocking the vehicle and the walking. In order to facilitate the dismantling of the prefabricated connecting bridges installed at one side to dismantle the one side of the prefabricated connecting bridges 20 respectively installed in the center and to install the inclined connection roads by laying the soil on the demolished portions. 11) the upper plate support horizontal beam 31 is provided to be separated across the height adjustment and the upper plate support horizontal beam separation prevention device 30 installed in pairs on both sides of the two sides and the earth wall 68 is centered. It is installed to separate and connected to the upper plate supporting horizontal connection (65).

       In addition, the reason why the earth wall 68 is installed is to remove any part of the prefabricated connecting bridge 20 installed so as to be separated on the existing road surface 11, and when the land is sedimented using earth and sand, the earth and sediment is sedimented. To do so, the retaining wall (not shown) installed on the inner side of the beam departure prevention device 30 by a pair of height adjustment and the upper plate supporter installed on both sides of the existing road surface 11 which will be described later, the earthwork This is to prevent the flow down.

       That is, in other words, the earth wall 68 is installed in the center lane of the existing road surface 11 and installed inside the beam departure preventing device 30 with the height adjustment and the upper plate supporters installed on both sides of the existing road surface 11, Retaining walls (not shown) are installed on both sides of the existing road to substantially connect the raised soil plate between the earth wall 68 and the retaining wall to smoothly connect the existing bridge top plate 10 and the existing road surface 11. The main purpose is to install the access road.

       Referring to the method of installing the prefabricated connection bridge of the present invention again, the upper plate support horizontal beam 31 is installed between the height adjustment and the upper plate support horizontal beam separation prevention device 30 installed in the opposite position to the pair and enter and exit. The upper plate 70 is installed on the existing bridge top plate 10 and the existing road surface 11, and the main portion of the upper plate 60 is installed in the middle portion to install the prefabricated connection bridge 20 to FIG. 11, FIG. 12, and then

       The retaining wall (not shown) is installed on the inner side of the height adjustment and top plate support beam separation prevention device 30 installed in pairs on both sides of the existing road.

       As described above, when the prefabricated connection bridge and all other preparations are completed, the step of elevating the existing bridge top plate 10 is completed step by step, and at the same time, the entry and exit top plate 70 and the prefabricated connection bridge of the prefabricated bridge bridge 20 are completed. By interlocking all the installed hydraulic jack to make a prefabricated connection bridge 20 is made a certain slope.

       When the installation of the prefabricated connecting bridge 20 is completed, one side of the prefabricated connecting bridge 20 installed on both sides of the roadway center line of the existing road is removed, and then the earthen board of the elevated bridge 10 that has been elevated using earth and sand. Filling and compacting to maintain the height and the existing road surface 11 and a constant inclination to form a connection road (not shown), and then paved to form a road surface, then prefabricated connection bridges installed on another side (20) Steps to remove the soil wall 68 inserted into the driveway centerline step by step while demolishing and carrying out the filling and compacting and paving to connect the existing road surface 11 and the existing bridge deck 10 smoothly. Not shown).

       Referring to the shift conduction prevention device 80 which can not be confirmed in FIG. 12 but can be confirmed in FIG. 12, the existing prefabricated bridge 20 to prevent the shift 12 from being conducted while elevating the existing bridge top plate 10. While dismantling, the concrete support block 81, which is the shift conduction preventing device 80, is installed on the existing road surface 11 at regular intervals from the shift 12, but the concrete support block is replaced with the existing bridge ( 12 and the fixing hole 82 is installed in the opposite direction, and the through hole 83 is connected to the fixing unit 82 in the direction in which the shift 12 is installed, and the existing bridge top plate 10 of the shift 12 is installed. The through hole 83 penetrates the through hole 83 through which the fixing support 82 is connected, while the fixing hole 82 is installed in the vertical portion 13 of the bridge portion on which the through hole 83 is installed. After installation of the shift 12 and the concrete support block 81 of the After the PC steel wire 84 is fixed to the landing 82, a tension force is introduced into the fixing unit 82 on the one side to fix and fix the shift 12.

The installation method of another connection road is to dismantle the prefabricated bridge bridge 20 installed on both sides at the same time without dismantling the prefabricated bridge bridge 20 step by step, and at the same time to make the filling and compacting and pavement at the same time. It is also possible to shorten the time required to open a road and then to build a road, which can be selectively applied to a work requiring speed.

12 is a view showing the prefabricated cross-linking of FIG. 11 from the side, and already described in detail in FIG. 11 to omit the detailed description, except that the shift 12 while elevating the existing bridge deck 10; If there is a risk of falling, while dismantling the existing prefabricated bridge 20 to prevent the fall, install a concrete support block 81, one of the shift prevention device 80, the concrete support block 81 alternate As the through hole 83 penetrates the body of the concrete support block 81 in the direction in which the 12 is installed, and the fixing hole 82 is installed in the through hole 83 in the opposite direction to the shift 12. , The shape is made of a variety of forms, such as rectangular, tetra-port type, triangle, polygon, the installation position of the concrete support block 81 is to be installed on the existing road surface 11 at regular intervals with the alternating (12). and, The vertical part 13 of the portion where the existing bridge top plate 10 is installed by penetrating through the through-hole 83 to the vertical portion 13 of the bridge portion on which the existing bridge top plate 10 of the shift 12 is installed. After the fixing unit 82 is installed in the through hole 83 formed in the through hole 83, the PC steel wire 84 is inserted into the through hole 83 formed in the vertical portion 13 of the shift 12 and the concrete support block 81. And fixing both ends of the PC steel wire 84 to the fixing unit 82 installed on the vertical portion 13 of the shift 12 and the concrete support block 81, and then applying the tension force to the PC steel wire 84. The concrete support block 81 exerts a bearing force by the earth and sand pressure of the fill acting on the concrete support block 81 by carrying out the filling, and then compacting and paving the road to open the road. To prevent it from falling.

       The present invention provides a method of installing a prefabricated connecting bridge for smoothly connecting the existing bridge top plate and the existing road surface while elevating the existing bridge top plate to allow the passage of the bridge while elevating the existing bridge. The present invention relates to a method of establishing a connection road and using it for transportation while demolishing a temporary prefabricated connection bridge.

       The prefabricated connection bridge is easy to install because the whole is prefabricated, and the installation time is fast, and since all the use is finished, the time required for dismantling is shortened because the prefabricated connection bridge is dismantled in the reverse order of assembly. It is an economical and economical cross-linking installation method that can reduce the time required for installation and dismantling as well as economical, where all dismantled equipment can be recycled. The method of establishing a connection road, which is used for traffic by establishing a connection road with compaction and pavement, can be used semi-permanently, and the maintenance is easier than the existing prefabricated connection bridge.

Claims (12)

delete delete delete delete delete delete        Between the earth wall where the earth wall H beam is inserted by installing and installing the earth wall H beam at regular intervals on the road center line of the existing road surface, and the height adjustment and the top plate horizontal beam leaving prevention device installed at regular intervals on both sides of the existing road surface. After the installation of the upper plate supporting horizontal beam, the height adjustment and the upper plate supporting horizontal beam separation prevention device and the upper plate supporting horizontal beam is completed, the prefabricated connecting bridges are installed using the entrance entrance top plate and the main body top plate, and the existing road When the raising of the retaining wall installed inside of the height adjustment and top plate support beam separation prevention device installed in pairs on both sides and the existing bridge top plate is completed, one side of the installed prefabricated bridge bridge is removed, and then the existing bridge top plate is supported. In order to prevent the fall of the shift is installed, a shift prevention device is installed, and the elevated bridge Install the alternating conduction prevention device while dismantling the prefabricated connecting bridge installed on the other side and the road paved and filled with pavement and compaction to maintain a constant slope with the height of the top plate and the existing road surface, The prefabricated bridge is easy to install and dismantle.         The method of claim 7, wherein        Wherein the upper support beam beam is a prefabricated connection bridge that is easy to install and dismantle the bridge height characterized in that the bridge support characterized in that the upper connection support beam beam connecting portion is formed and can be adjusted at the same time.         The method of claim 7, wherein        The shift anti-conduction device connects the anchorages installed on the concrete support block installed on the existing road surface and the anchorages installed on the vertical part of the shift by connecting them with PC steel wires, and then fixes the anchorages on one side to fix and fix them. Prefabricated bridges for easy installation and dismantling that can control the height of the bridge and the height of the bridge. delete How to install access roads using prefabricated bridges for smooth access to existing bridge decks and existing road surfaces without controlling traffic when elevating existing bridge decks in order to expand the bridge space and traffic means of bridges To        (A) installing the earth wall by inserting the earth wall H beam at a predetermined distance on the roadway centerline of the existing road surface, and then installing the earth plate to a certain height between the earth wall H beam;        (b) installing a height-adjusting and upper plate support horizontal beam separation prevention device at regular intervals on both sides of the existing road surface, and installing them in pairs at regular intervals around the earth wall;        (c) by installing a top support horizontal beam between the height adjustment and the top support horizontal beam detachment prevention device installed in a pair of opposite positions to each other, by installing a top support horizontal beam connection to the top support horizontal beam Installing the earth wall H beam to be separated from the center, and connecting the earth wall H beams to each other by using the upper plate supporting horizontal beam connector;        (d) installing a prefabricated connection bridge without blocking the vehicle and traffic after the height adjustment and installation of the top support horizontal beam detachment preventing device and the top support horizontal beam are completed;        (e) installing a retaining wall on the inside of the height adjustment and top plate supporting beam separation prevention device installed in pairs on both sides of the existing road;        (f) When the elevation of the existing bridge deck is completed, the one side of the prefabricated bridge bridges installed on both sides around the driveway center line of the existing road is removed, and then the height of the elevated bridge deck and the existing road surface using earth and sand Forming a connection road by filling and paving to maintain a constant inclination;        (g) Remove the prefabricated connecting bridge installed on the other side, and carry out the filling while removing the earth wall already installed to make smooth connection between the existing road surface and the existing bridge deck. Installation method of prefabricated connecting bridge that is easy to install and dismantle, which can adjust the height of the bridge and the height of the bridge which is characterized by the installation.         The method of claim 11,        In the step (f), a through hole penetrating the body of the concrete support block is installed in the direction in which the shift is installed, and the concrete support block in which the anchorage is installed in the through hole opposite to the shift is provided at a predetermined distance from the shift. After installing the through-hole in the vertical portion of the bridge portion where the existing bridge top plate is installed, and the fixing hole is installed in the through hole formed in the vertical portion of the portion where the existing bridge top plate is installed The steel wire is inserted into the through hole formed in the vertical part of the shift and the concrete support block, and the both ends of the PC steel wire are fixed to the anchorage installed in the vertical part of the shift and the concrete support block, and then the tension force is introduced into the PC steel wire. And the step of installing a shift prevention device to prevent the shift from falling. To install the assembled connection crosslinked by the easy installation and removal can be adjusted to the height at the time of connection.

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