KR100964729B1 - Bridge lifting apparatus for changing bridge bearings - Google Patents

Abstract

PURPOSE: A device lifting a bridge using a girder side space is provided to install and disassemble a bridge post and a bridge without damage. CONSTITUTION: A device lifting a bridge using a girder side space comprises a lifting unit(120), a supporting part(140) and a girder lower support part(170). The lifting unit lifts a beam or a girder to the upper surface of a pier. The lifting unit has a hydraulic jack. The hydraulic jack is installed in the upper side of alternation or the bridge post. The supporting part locates on the top of the hydraulic jack. The supporting part has a supporting member. The supporting member ascends and descends with the operation of the hydraulic jack. The girder lower support part comprises a bracket in the supporting member both ends'.

Description

Bridge lifting device using girder side spaces {BRIDGE LIFTING APPARATUS FOR CHANGING BRIDGE BEARINGS}

The present invention relates to a bridge lifting device for replacing the bridge device of the bridge, and more specifically, by using a prefabricated girder bottom support portion without using any anchor bolt at all, to ensure no damage to the concrete structure, to ensure the maximum work space Therefore, the construction is easy, the air can be reduced as much as possible, and even in the case of hydraulic loss relates to a bridge lifting device that can be made to replace the bridge device very safely.

In general, bridges consist of structures of various types and shapes, depending on the type of facility to be used and the purpose of use, and its role is to provide sufficient strength by safely maintaining the function of the bridge and the facilities supported by the bridge. It should be durable.

As shown in FIG. 1, the bridge 1 is provided with a plurality of bridges 16 at predetermined distances between the two side shifts 14, and the tops of the shifts 14 and the bridges 16 are provided. It consists of a beam or girder 12 and a top plate 18 which are continuously installed over.

And structures such as beams or girders 12 and the upper plate 18 installed over the upper portion of the pier, one end is fixed so as to expand or contract according to the stretching stress acting after installation, the other end is movable Is installed over the pier in the state of, and the bridge device 20 is installed between the pier 16 and the movable end of the beam or girder 12 to enable this expansion or contraction action.

As the bridge 1 constructed in such a configuration, as the time passes after installation, the bridge structure or the bridge device 20 is often damaged due to various types of natural or artificial factors.

For example, corrosion or destruction of the teaching apparatus 20 due to leakage at the joint portion of the bridge beam or the girder 12 occurs, and a functional paralysis of grease injected into the teaching apparatus 20 occurs. As a result, the function of the bridge device 20 is lost, and the crack of the bridge 16 and the crack of the beam or the girder 12 occur.

Therefore, when repairing the bridge (1), it is necessary to lift the bridge beam or girder (12) and repair the bridge device (20), which uses a separate hydraulic jack provided in the bridge lifting device to repair the beam or girder (12). Lift and repair.

As such, the conventional bridge lifting device 40 for lifting the beam or girder 12 to replace the bridge device 20 mounts the bracket 42 on the front of the bridge 14 and the bridge 16 to the beam or The girder 12 is raised.

That is, in order to install the conventional bridge lifting device 40, the anchor bolt 46 is embedded in the shift 14 and the pier 16 to fix the bracket 42, so the shift 14 and the pier 16 are fixed. In order to damage the cracks and to install in the concrete of the old shift 14 and pier 16, the installation of a plurality of anchor bolts 46 is easy to break the situation is very dangerous.

Therefore, all the bracketing methods of the bridge raising device 40 proposed in the related art break the concrete and the mounting device 20 because the bracket 42 is installed on the front of the shift 14 and the bridge 16 when the bracket 42 is installed. Due to the bracket 42 installed in all processes such as dismantling, rebar assembly, non-shrink mortar casting, and reinstallation of the teaching apparatus 20, the construction is very difficult, and thus, a long working air is required.

In addition, the conventional bridge lifting device 40 had a problem that can cause a large accident because the safety is not secured when the hydraulic loss occurs unexpectedly during the operation by the hydraulic jack 50.

The present invention is to solve the conventional problems as described above, the purpose of which does not damage the concrete structure of the alternating and pier at all, easy to install and dismantle, can easily secure the work space to replace the bridge device It is to provide a bridge lifting device that can reduce the air by easy work, and greatly reduce the construction cost by recycling.

And another object of the present invention is to provide an improved bridge lifting device to prevent the safety accident in advance during the replacement work of the device by the safe operation even in case of sudden hydraulic loss of the hydraulic jack.

In order to achieve the above object, the present invention, the lifting unit having a hydraulic jack which is installed upright on the support plate mounted on the upper surface of the alternating or pier between the girder and the girder side; A support part positioned on an upper side of the hydraulic jack of the elevating part and including a support member which is lifted and lowered by the operation of the hydraulic jack; And a girder lower support part disposed on both ends of the support member of the support part and provided on one side with a bracket supported on the upper surface of the support member, the lower girder supporting part being arranged to surround the lower part of the girder. By operating the hydraulic jack raised on the upper surface of the support and the bottom of the girder through the beam or girder at the same time, to provide a bridge lifting device configured to utilize the side space between the girder and the girder. Therefore, the present invention does not damage the concrete structure of the shift and piers at all, easy to install and dismantle, it is possible to easily secure the work space. Through this, it is easy to replace the existing teaching device to reduce the air, it is possible to recycle the hydraulic jack, the support member and the girder lower support part can greatly reduce the construction cost.

And the present invention preferably the girder lower support portion is formed by protruding the bracket on the upper side, respectively, a plurality of side plate members each formed a fitting groove at the bottom, and both side ends are inserted into each of the fitting groove of the side plate member is fixed It will be installed to surround the bottom of the girder, including the supporting member. As such, the present invention can be easily installed and dismantled on the lower surface of the beam or the girder, and can easily replace the existing teaching device.

In addition, the present invention preferably further includes a height fixing part for maintaining a constant height of the beam or girder after the hydraulic jack is raised, the height fixing portion is the lower surface of the rod and the support member of the hydraulic jack A plurality of fixing bolts disposed between the lifting plates having bolt holes at four corners and disposed upright between the lifting plates and the supporting plates, respectively inserted into bolt holes formed at the four corners of the lifting plates and the supporting plates, and coupled thereto. It is made of a nut, the height of the lifting plate and the support plate by the rotation of the nut relative to the fixing bolt to support the lifting plate relative to the support plate and to maintain a constant gap therebetween. Therefore, the present invention prevents the fall of the beam or girder even in the event of accidental hydraulic loss of the hydraulic jack, it is possible to work safely, it is possible to effectively prevent the safety accident in advance during the replacement of the device.

And the present invention is preferably the inner diameter of the bolt hole formed in the four corners of the lifting plate and the support plate is larger than the outer diameter of the bolt, smaller than the outer diameter of the nut. Through this, it is possible to hold the lifting plate relative to the supporting plate by adjusting the length of the bolt and nut, and to keep the gap therebetween.

In addition, the present invention preferably further includes a height fixing part for maintaining a constant height of the beam or girder after the hydraulic jack is raised, the height fixing portion is the lower surface of the rod and the support member of the hydraulic jack A bolt inserted downward in all four corners of the elevating plate positioned between the nut and a nut screwed to the bolt, and a cylindrical insertion tube fixed to the bottom edge of the bolt in the four corners of the support plate, respectively. The lower end of the fixing bolt is adjusted by the rotation of the nut in the state inserted in the cylindrical insertion tube to be supported by the cylindrical insertion tube to support the lifting plate relative to the support plate to maintain a constant gap therebetween. Through this, the present invention can prevent the fall of the beam or girder even in the event of accidental hydraulic loss of the hydraulic jack, it is possible to safely work, it is possible to effectively prevent the safety accident in advance during the replacement of the device.

And the present invention is preferably the inner diameter of the cylindrical insertion tube formed on the four corners of the support plate is larger than the outer diameter of the bolt, smaller than the outer diameter of the nut. Therefore, it is possible to hold the lifting plate relative to the supporting plate by adjusting the length of the nut on the bolt, and to keep the gap therebetween.

According to the bridge lifting device according to the present invention by utilizing the lateral space between the girders through the drive of the hydraulic jack mounted on the upper surface of the alternating or pier, the lower girder support portion located on both sides of the support member respectively to the lower surface of the beam or girder Since it is enclosed to move up and down, there is no need to install a bracket through the construction of the anchor bolt directly to the alternating and pier as in the prior art, it is easy to install and dismantle without damaging the concrete structure of the alternating and pier at all.

In addition, according to the bridge lifting apparatus according to the present invention, since the conventional bracket is not installed on the front of the shift and the pier, the work space can be easily secured so that the replacement work of the bridge device is easy, and thus the construction period is reduced, and thus the construction It is easy to recycle parts, which can greatly reduce the construction cost.

And according to the present invention, since the beam or girder is held in the state of being lifted through the fixing bolt of the height fixing portion in the state of the hydraulic jack is lifted safely prevents the fall of the beam or girder in the event of accidental hydraulic loss of the hydraulic jack An excellent effect is obtained to prevent safety accidents during the replacement work.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

Bridge lifting apparatus 100 according to the present invention has a lifting unit 120 for lifting the beam or girder 12 in the upper surface of the alternating or pier 16, as shown in Figures 2 and 3 , The lifting unit 120 is a structure having a hydraulic jack 124 is installed upright on the support plate 122 located on the upper surface of the alternating or pier 106.

As shown in FIG. 2, the lifting unit 120 includes a plurality of hydraulic jacks 124 on the upper surface A between the beams or girders 12, not directly below the beams or girders 12. By installing a set, a plurality of beams or girders 12 can be lifted at the same time.

And the support portion 140 including the support member 142 is raised and lowered by the operation of the hydraulic jack 124, as shown in Figure 3 the upper side of the hydraulic jack 124 of the lifting unit 120.

The support 140 includes a "Н" type support member 142 whose lower surface is supported by the rod 124a of the hydraulic jack 124, such support member 142 is a beam or girder 12 It will be arranged horizontally in the space between the sides of the.

 In addition, the bridge lifting device 100 according to the present invention is provided with a girder lower support portion 170 which is disposed at both ends of the support member 142 of the support portion 140, respectively.

The lower girder bottom portion 170 is provided with a bracket 172 on one side of each of the support member 142 is supported on the upper surface to surround the bottom surface of the beam or girders 12 to fix it Each of the grooves 174 of the " mm " shape is formed.

The lower girder bottom portion 170 is fitted with the lower surface of the beam or girder 12 into the groove 174 of the "∪" type, respectively, and is mounted on the upper surface of the alternating 14 or the pier 16. When the hydraulic jack 124 is operated, the bracket 172 is lifted through the “Н” -type support member 142 of the support 140, thereby lifting the beam or girder 12 together.

As shown in FIG. 4, the lower girder bottom support part 170 protrudes the bracket 172 on the upper side, and the plurality of side plate members 180a having the fitting grooves 182 formed on the lower side, respectively. 180b). And it is a structure that is assembled to surround the lower part of the girder, including a support member 186 is fixed to both sides end is inserted into the fitting groove 182 of the side plate members (180a, 180b).

The fitting grooves 182 provided in the side plate members 180a and 180b in the structure of the lower girder bottom support unit 170 are coupled to the fitting protrusions 186a formed on both sides of the support member 186 in the same size. As a prefabricated structure, it is assembled in a "work" structure and wraps around the lower part of the girder.

In addition, the bridge lifting apparatus 100 according to the present invention further includes a height fixing part 200 between the rod 124a of the hydraulic jack 124 and the lower surface of the support member 142, as shown in FIG. The height fixing part 200 is to maintain the height of the beam or the girder 12 in a raised state after the hydraulic jack 124 is raised, and the elevating plate 210 having bolt holes 210a formed at four corners. And a plurality of bolt holes 122a and 210a which are disposed upright between the elevating plate 210 and the supporting plate 122, and are respectively inserted into bolt holes 122a and 210a formed at four corners of the lifting plate 210 and the supporting plate 122. It consists of a fixing bolt 220 and a nut 230 coupled thereto.

The height fixing part 200 is a bolt hole 210a formed at four corners of the elevating plate 210 and the supporting plate 122 after the nut 230 is fastened to the screw portion 220a of the bolt 220. Inserting the upper and lower ends of the bolt 220 and the height adjustment between the lifting plate 210 and the support plate 122 by the rotation of the nut 230 with respect to the fixing bolt 220 is a lifting plate relative to the support plate 122 It is a structure which supports 210 and keeps the space between them constant.

In this height fixing part 200, the inner diameter d2 of the bolt holes 122a and 210a formed at the four corners of the elevating plate 210 and the supporting plate 122 is larger than the outer diameter d1 of the bolt 220. Of course, it should be smaller than the outer diameter (d3) of the nut (230).

6 shows a deformation structure of the height fixing part 300.

The height fixing part 300 is a bolt 310a fixed downward in all four corners of the elevating plate 210 located between the rod 124a of the hydraulic jack 124 and the lower surface of the support member 142. A nut 310b screwed to the bolt 310a and a cylindrical insertion tube 320 fixed to the bottom edges of the bolt 310a are respectively inserted into the four corners of the support plate 122.

The height fixing part 300 is such that the inner diameter d4 of the cylindrical insertion tube 320 formed at the four corners of the base plate 122 is larger than the outer diameter d5 of the bolt 310a, and the outer diameter d6 of the nut 310b. ) Is smaller than

The height fixing part 300 is adjusted by the rotation of the nut (310b) in the state in which the lower end of the fixing bolt (310a) is fitted to the cylindrical insertion tube 320 is supported by the cylindrical insertion tube 320, the support plate 122 It can hold the elevating plate 210 with respect to the), it can be maintained a constant gap therebetween.

Bridge lifting apparatus 100 according to the present invention configured as described above is shown in Figure 7a, 7b and 7c, between the beam or girder 12 in the upper surface of the shift 14 or piers 16 Between the plurality of hydraulic jacks 124 provided in the lifting unit 120 is provided a plurality of sets.

These hydraulic jacks 124 are located on the upper side of the base plate 122, the bolt hole 210a is formed in the four corners, and is not located in the lower portion of the beam or girders 12, but the beam or girders 12 ) And the upper surface of the alternating 14 or pier 16 in the space between the beam and the girder 12.

And the upper portion of the hydraulic jack 124 is to put the support member 142 of the support portion 140, such a support member 142 is the lifting plate 210 is located on the lower surface, such a lift The steel plate 210 is formed with bolt holes 210a at four corners.

In such a structure, the width w1 of the supporting plate 122 and the elevating plate 210 is greater than the width w2 of the supporting member 142 so that the lower portion of the supporting member 142 is placed on the elevating plate 210. The bolt hole 210a of the elevating plate 210 is exposed to the outside of the flange 142a.

Then, after the support member 142 is installed on the upper portion of the hydraulic jack 124, the girder lower support portion 170 is assembled to both sides of the support member 142.

In this case, the lower girder support portion 170 inserts fitting projections 186a provided at both ends of the support member 186 into the fitting grooves 182 of the plurality of side plate members 180a and 180b, respectively. After assembling to the "shaped structure, as shown in Figure 7a so as to surround the lower surface of each beam or girder 12, the bracket protruding on the upper side of the side plate member (180a) (180b) ( 172 is assembled so as to span both ends of the support member 142, respectively.

FIG. 7A is a front view illustrating a state in which the lower girder support 170 surrounds the lower edge of the beam or girder 12 and spans the support member 142 of the support 140, and FIG. 7B is a side view thereof. As, the girder lower support portion 170 and the hydraulic jacks 124 are arranged on both sides of the chair apparatus 20. In addition, in the case of Figure 7c is also a side view, the girder lower support portion 170 and the hydraulic jack 124 is disposed between the chair apparatus.

As described above, the lower surface of the beam or the girder 12 is fitted into the grooves 174 formed in the girder lower support part 170, and in this state, the upper portion of the alternating 14 or the pier 16 is provided. When the hydraulic jack 124 mounted on the surface is operated, the bracket 172 of the girder lower support 170 is lifted through the “Н” type support member 142 of the support 140, thereby lowering the girder lower support 170. ) Raises the beam or girder 12 temporarily.

As such, in the state in which the beam or girder 12 is lifted up, the fixing bolt 220 of the height fixing part 200 is maintained so that the beam or the girder 12 is lifted even in case of sudden hydraulic loss of the hydraulic jack 124. And nuts 230 will be installed.

At this time, the nut 230 is fastened to the threaded portions 220a formed on the upper and lower portions of the bolts 220 of the height fixing part 200, and then bolt holes 210a formed at four corners of the elevating plate 210 and the supporting plate 122. Insert the upper and lower ends of the bolt 220, the height of the fixing bolt 220 is adjusted between the lifting plate 210 and the support plate 122 by the rotation of the nut 230 relative to the fixing bolt 220. It supports the lifting plate 210 with respect to the support plate 122, and keeps the gap therebetween.

As such, when the height of the elevating plate 210 is fixed to the support plate 122 through the bolt 220 of the height fixing unit 200, the hydraulic jack 124 breaks out while the beam or the girder 12 is lifted up. Even when the hydraulic pressure is lost, the beam or girder 12 is held in a lifted state by the plurality of bolts 220, so that the chair apparatus 20 can be safely replaced.

Alternatively, while operating the hydraulic jack 124 to temporarily lift the beam or the girder 12, the lower end of the fixing bolt 310a by using the height fixing portion 300 as shown in Figure 6 cylindrical insert pipe ( 320 to hold the lifting plate 210 relative to the support plate 122 by adjusting the height by the rotation of the nut (310b), and then supported by the cylindrical insertion tube 320, the interval between Can be maintained.

As described above, the present invention surrounds the lower surface of the beam or the girder 12 to install the girder lower support 170, and replaces the girder lower support 170 with the upper portion of the alternating 14 or the pier 16. Since the beam or girder 12 is lifted up and down by driving the hydraulic jack 124 mounted on the surface, the bracket through the installation of the anchor bolt 46 on the shift 14 or the pier 16 as in the prior art ( 42) there is no need to fix, it is easy to install and dismantle without damaging the concrete structure of the shift (14) and pier (16).

In addition, since the conventional bracket 42 is not installed on the front of the shift 14 and the pier 16, the present invention can easily secure a work space, thereby making it easy to replace the bridge device 20, and thus work To reduce the period, it is possible to easily recycle the components such as the hydraulic jack 124, the support member 142 and the lower girder support 170 can greatly reduce the construction cost.

In addition, in the state in which the hydraulic jack 124 is lifted, the beam or girder 12 is held in the lifted state through the fixing bolt 220 of the height fixing part 200, and thus, in case of accidental hydraulic loss of the hydraulic jack 124. Edo prevents the fall of the beam or girder 12 to prevent the safety accident during the replacement operation of the chair apparatus 20 in advance.

An embodiment of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. For example, the support member 142 is described as a "Н" type steel, but may be made of different "c" type steel, and such simple improvements and structural changes are obvious to those skilled in the art. As long as it belongs to the protection scope of the present invention.

1 is an explanatory view showing a structure in which the bridge lifting device according to the prior art is installed in the alternating and pier to replace the bridge device.

2 is a perspective view showing a structure in which a bridge lifting device according to the present invention is disposed between a beam or a girder at the top of an alternating or pier.

Figure 3 is a perspective view of the bridge lifting apparatus according to the present invention.

Figure 4 is an exploded view showing the girder bottom support portion provided in the bridge lifting apparatus according to the present invention.

Figure 5 is an exploded view of the height fixing portion provided in the bridge lifting apparatus according to the present invention.

6 is an exploded view illustrating the height fixing part of another structure provided in the bridge lifting apparatus according to the present invention.

7 is a view showing a structure in which the bridge lifting device according to the present invention is applied to the alternating or pier,

a) is a front view, b) is a side view in which the girder lower support part is installed outside the chair apparatus, and c) is a side view in which the girder lower support member was installed between the chair apparatuses.

Description of the Related Art

1 ...... bridge 12 ..... beam or girder

14 ..... shift 16 ..... piers

18 ..... Top 20 ..... Fixed Chair

40 ..... Bridge lift 42 ..... Bracket

46 ..... anchor bolt 50,124 ..... hydraulic jack

100 .... Bridge Lift 120 .... Lift

122a .... Bolt hole 124 ..... Hydraulic jack

124a ... Rod 140 ... Support

142 .... support member 170 ..... bottom girder support

172 .... Bracket 174 .... "∪" type groove

180a, 180b..side plate member 182 ..

186 ..... support member 186a ... fitting projection

200 ..... Height Fixed 210 .... Lift Plate

210a .... Bolt hole 220 .... Fixing bolt

230 ..... Nut 300 .... Height fixing

310a .... bolts 310b .... nuts

320 ..... Cylindrical Insertion Tube

d1 ..... Bolt OD d2 ..... Bolt Bore

d3 ..... nut outer diameter d4 ..... inner diameter of cylindrical insertion tube

d5 ..... Outer diameter of bolt d6 ..... Outer diameter of nut

w1 ..... Width of lifting plate w2 ..... Width of support member

Claims (6)

delete delete delete A lifting unit 120 having a hydraulic jack 124 installed upright on a support plate 122 mounted on an upper surface of an alternating 14 or a pier 16 between the girder and the girder side; A support part 140 positioned on an upper side of the hydraulic jack 124 of the elevating part 120 and including a support member 142 which is lifted and lowered by the operation of the hydraulic jack 124; And Girder lowers, which are disposed at both ends of the support member 142 of the supporter 140 and have a bracket 172 on one side and are supported by the upper surface of the support member 142, are installed to surround the bottom of the girder. It includes; a support unit 170, The hydraulic jack 124 mounted on the upper surface of the shift 14 or the pier 16 is operated to simultaneously lift the beam or the girder 12 through the girder lower support 170 directly supported by the support 140. Being constructed to utilize the lateral space between the girder and the girder, The girder lower support part 170 has a plurality of side plate members 180a and 180b which protrude and form the brackets 172 on the upper side and the fitting grooves 182 on the lower side, and the side plate member ( It is installed to surround the lower part of the girder, including a support member 186, which is inserted into both ends of each end in the fitting groove 182 of the 180a) (180b), After the hydraulic jack 124 is raised, further includes a height fixing part 200 for maintaining a constant height of the beam or girder 12 in a raised state, wherein the height fixing part 200 is the hydraulic jack 124 And a lifting plate 210 disposed between the rod 124a and the lower surface of the support member 142 and having bolt holes 210a formed at four corners, and between the lifting plate 210 and the support plate 122. It consists of a plurality of fixing bolts 220 and nuts 230 coupled to the uprights and inserted into the bolt holes 122a and 210a formed in the four corners of the elevating plate 210 and the supporting plate 122, respectively. Rotation of the nut 230 relative to the fixing bolt 220 is adjusted between the lifting plate 210 and the support plate 122 to support the lifting plate 210 with respect to the support plate 122 and the gap therebetween. Keep it constant, The inner diameter d2 of the bolt holes 122a and 210a formed at the four corners of the elevating plate 210 and the supporting plate 122 is larger than the outer diameter d1 of the bolt 220 and the outer diameter d3 of the nut 230. Bridge lifting device using girder side space, characterized in that smaller than. delete delete

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