KR101696450B1 - Lifting device of upper structure of bridge and Replacing method of bridge bearing and Installing method of bridge bearing at lower structure using the same - Google Patents

Lifting device of upper structure of bridge and Replacing method of bridge bearing and Installing method of bridge bearing at lower structure using the same Download PDF

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Publication number
KR101696450B1
KR101696450B1 KR1020150073184A KR20150073184A KR101696450B1 KR 101696450 B1 KR101696450 B1 KR 101696450B1 KR 1020150073184 A KR1020150073184 A KR 1020150073184A KR 20150073184 A KR20150073184 A KR 20150073184A KR 101696450 B1 KR101696450 B1 KR 101696450B1
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South Korea
Prior art keywords
bridge
vertical
support
lifting device
load
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KR1020150073184A
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Korean (ko)
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KR20160138822A (en
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심규숙
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심규숙
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/30—Constructional features with positive brakes or locks
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/04—Bearings; Hinges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The present invention relates to a structure for lifting an upper load of a bridge safely by means of a lifting device comprising means for lifting and supporting a vertical load by a bridge superstructure and means for converting and supporting the vertical load into a horizontal load, And a method of installing a new bridge support on the upper part of the reinforcement structure by installing the reinforcement structure on the lower bridge structure when the bridge space is not installed on the bridge or the bridge space is low enough to make it difficult to install the bridge support The purpose is to provide.
In order to accomplish the above object, the lifting apparatus of the present invention includes a load supporting device capable of supporting and supporting an upper load after being pulled up by a hydraulic jack by a hydraulic jack, into a horizontal load and a vertical load, The support device is formed with inclined support means for supporting the upper portion corresponding to the pulling height and the lower portion is formed as vertical support means for structurally and safely supporting the bridge structure and supports the bridge over structure by the hydraulic jack and the load supporting device As a technical feature.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting device for lifting a bridge structure and a method for constructing a bridge structure using the lifting device,

The present invention relates to a lifting device for structurally and safely lifting and supporting a bridge superstructure in order to replace an existing bridge support installed in a bridge substructure with a new bridge support or to install a bridge support in the bridge substructure, And a method for constructing a new bridge support by reinforcing a cantilever on a bridge substructure.

Generally, the bridge structure includes an upper structure composed of a bottom plate for supporting live loads generated by passage of a vehicle, a train, etc., and a girder for supporting the bottom plate from the lower portion, A lower structure and a foundation for transmitting the load transferred to the lower structure to the ground.

Bridge restraint is installed between the bridge overhead structure and the lower structure to control the displacement of the bridge overhead structure due to the live load acting on the bridge overhead structure and the expansion and contraction of the upper structure due to the temperature change.

The bridge support is formed by a plurality of steel plates stacked between an upper plate and a lower plate of the bridge support to control vertical and horizontal displacements caused by vertical load and horizontal load by the bridge superstructure, And a friction type support device in which a hemispherical groove is formed between the upper and lower plates and a hemispherical bearing is provided in the hemispherical groove.

The bridge support is deteriorated in durability of the support device due to corrosion or leakage over time due to leakage of water due to breakage of the expansion joint that connects the bottom plate as the upper structure, so that the control performance of the bridge support is reduced, It is necessary to repair or replace the bridge.

Conventionally, a hydraulic jack is installed between an upper structure and a lower structure of a bridge, the upper structure is raised, and the bridge support is repaired by replacing the existing bridge support or replacing the existing bridge support with a new bridge support. However, Hydraulic jacks must be supported continuously to raise the superstructure.

However, the hydraulic performance of the hydraulic jacks lifting the bridge overhead structure is lost due to the sudden increase in vehicle traffic to both sides or to one side of the bridge, or the load on one side of the upper structure is increased due to uneven settlement of the upper structure, The bridge becomes structurally unstable due to the settlement of the structure.

Therefore, it is necessary to develop a lifting device that can stably support the bridge overhead structure and a bridge support construction method using the same when the hydraulic jack loss of the hydraulic jack and the change of the bridge overhead load are changed when the bridge supporter supporting the bridge superstructure is replaced.

Registered Patent Publication No. 10-0338490 (published on May 30, 2002) Registered Patent Publication No. 10-0477387 (published on Mar. 17, 2005)

The present invention relates to a structure for lifting an upper load of a bridge safely by means of a lifting device comprising means for lifting and supporting a vertical load by a bridge superstructure and means for converting and supporting the vertical load into a horizontal load, And a method of installing a new bridge support on the upper part of the reinforcement structure by installing the reinforcement structure on the lower bridge structure when the bridge space is not installed on the bridge or the bridge space is low enough to make it difficult to install the bridge support The purpose is to provide.

In order to achieve the above object, the lifting apparatus of the present invention includes a load supporting device capable of supporting and supporting a vertical load caused by an upper structure after being pulled up by a hydraulic jack by a hydraulic jack when lifting a bridge upper structure, The upper portion of the load supporting device forms an inclined supporting means for supporting the upper portion of the load supporting device in correspondence with the pulling height and the lower portion is formed as a vertical supporting means for structurally and securely supporting the upper supporting structure. The principle of solving the problem is to do.

In addition, the present invention can install the lifting device on the existing bridge support front face so that the bridge support can be structurally and safely replaced even when the load on the bridge is changed. When the bridge support is newly installed in the bridge lower structure, And a new bridge support can be constructed on the reinforcement structure by using the lifting device.

In order to achieve the above object, the present invention provides a load supporting device for supporting a vertical load with a gap spaced by a lifting height by a hydraulic jack of a lifting device, wherein an upper side of the vertical connecting member is cut to form a slanted surface The vertical connection body is horizontally moved inward by a pull-up height so that both side surfaces of the upper member are formed as inclined surfaces and supported in an inclined contact with the raised upper support member, and the lower side of the vertical connection member is a vertical member The lower projecting piece horizontally moves inward and is vertically supported by a pair of lower support members of the lower member.

Second, a high-strength connecting bolt passing through the vertical connecting member is inserted and penetrated in order to fasten a pair of vertical connecting members installed in the forward and backward directions between the upper and lower members of the load supporting device, The vertical load caused by the bridge superstructure is converted into a horizontal load and supported.

Third, the lifting device is installed at predetermined intervals on both sides of the existing bridge support, the bridge upper structure is elevated to a predetermined height by the hydraulic jack of the lifting device, and then the vertical load is switched to the horizontal load using the load supporting device During support, replace the bridge support by replacing the bridge support with a new bridge support and removing the lifting device.

Fourth, when the bridge support is not installed on the bridge or the bridge support space is formed low and the bridge support can not be installed directly, a cantilever type reinforcing structure is installed on both sides of the bridge lower structure, The upper structure is lifted by the lifting device, the hydraulic jack is removed from the lifting device, and a vertical section is additionally provided on the upper side of the reinforcing structure so that the load supporting device is embedded, thereby completing the reinforcing structure, The bridge support is supported by a cantilever type reinforcing structure and installed in the bridge substructure.

The present invention is characterized in that a pair of vertical connecting members of a load supporting device provided on both sides of a lifting device are fastened by a connecting bolt and a nut to convert a vertical load into a horizontal load by a connecting bolt, Is vertically supported by the lower projecting piece as a vertical member to support the vertical load, thereby converting the upper load of the bridge into a horizontal and vertical load and thus structurally and safely supporting the bridge.

Further, according to the present invention, when a vertical bridge load is increased or a hydraulic pressure loss of a hydraulic jack is increased when a bridge support is replaced by pulling up a bridge overhead structure, the bridge overhead structure is supported by the inclined support means on the upper side of the load support device and the vertical support means on the lower side It is structurally safe to support and replace the bridge support.

Further, according to the present invention, a reinforcing structure is provided on both sides of a bridge lower structure, and the lifting device and the bridge support are combined with each other and installed in the reinforcing structure. Even if the bridge space is formed low in the bridge, There is an effect that the pedestal can be easily installed.

1 (a) to 1 (d) are a perspective view and an exploded perspective view of a lifting device according to an embodiment of the present invention,
2 (a) to 2 (f) are perspective views illustrating a process of replacing a bridge support in a bridge by using a lifting device according to an embodiment of the present invention
3 (a) to 3 (i) are perspective views illustrating a process of installing a bridge support on a bridge substructure using a lifting apparatus according to an embodiment of the present invention

The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown.

1 (a) to 1 (d) are a perspective view and an exploded perspective view of the lifting device according to one embodiment of the present invention. In FIG. 1, the lifting device 70 supporting the bridge upper structure of the present invention has a load The load supporting device 50 includes a support device 50 and a hydraulic jack 60. The load supporting device 50 is a load supporting device that is a mechanical means when the hydraulic jack 60 is lost due to a variation in the bridge overhead structure, 50 to securely support the bridge superstructure 2.

The load supporting device 50 includes an upper member 10 for supporting the lower portion of the bridge upper structure, a vertical connecting member 30 for supporting the upper load of the bridge by converting the upper load into a horizontal load and a vertical load, And a connecting bolt 40 for integrally connecting a pair of vertical connecting members 30 installed in the forward and backward directions between the member 20 and the upper and lower members 10 and 20 from both sides with the nuts 41.

The upper member 10 of the load supporting device 50 includes an upper plate 11 for supporting a lower portion of the bridge upper structure and a pair of upper support members 12 at predetermined intervals on the lower sides of the upper plate 11 The upper support member 12 is integrally formed with the upper support member 12 so that the upper protrusion piece 32 of the vertical connection member 30 is inserted and horizontally moved An insertion groove 14 is formed.

The upper support member 12 is sloped on both sides so as to be slidably in contact with the vertical connection member 30 by a height elevated by the hydraulic jack 60. The upper surface of the upper support member 12 is longer And a pair of vertical stiffeners 13 are integrally formed at predetermined intervals on the outer side of the upper support member 12 so as to reinforce both sides of the upper support member 12. [

The lower member 20 of the load supporting device 50 includes a lower plate 21 supported on the bridge substructure and a pair of lower support members 22 formed on both sides of the lower plate 21 at a predetermined interval The lower support member 22 is formed with a rectangular protrusion 25 at its center and a lower protrusion piece 33 of the vertical connection member 30 is inserted between the pair of lower support members 22 An insertion groove 24 is formed in the front and rear directions of the lower support member 22 so as to be horizontally moved.

The pair of lower support members 22 is formed as a vertical member so as to vertically support both sides of the lower projecting piece 33 of the vertical connection member 30, A pair of vertical stiffeners 23 are integrally formed at predetermined intervals so as to reinforce both sides of the lower support member 22. [

The pair of vertical connection members 30 of the load supporting device 50 are arranged at predetermined intervals in the forward and backward directions between the upper member 10 and the lower member 20, A vertically connecting body 31 having a rectangular parallelepiped shape and an upper protruding piece 32 and a lower protruding piece 33 protruding from the center of the lower portion on the vertical connecting body 31.

The vertical connection body 31 is formed in a generally rectangular parallelepiped shape, and the upper side is formed so as to be inclined at an inner side thereof. The high-strength connection bolt 40 connecting the pair of vertical connection members 30 can be inserted and penetrated A through hole 34 is formed.

An upper projecting piece 32 is integrally formed at an upper center of the vertical connection body 31 at a predetermined height so as to be horizontally inserted into an insertion groove 14 formed in the upper member 10. A lower protruding piece 33 is integrally formed at a lower center of the vertical connection body 31 at a predetermined height so as to be horizontally inserted into an insertion groove 24 formed in the lower member 20. When the vertical protrusion 32 and the protrusion 33 of the vertical connection body 31 are inserted into the insertion recesses 23 and 24 and the vertical connection member 30 is horizontally moved, Does not move in the vertical direction but moves only in the horizontal direction. That is, the vertical connecting member 30 does not change in height when horizontally moved.

A hydraulic jack 60 for lifting the bridge upper structure is installed at the center between the upper member 10 and the lower member 20 and when the bridge upper structure 2 is pulled up by the hydraulic jack 60, The upper protruding piece 32 is horizontally moved into the insertion groove 14 of the upper member 10 by the pulling height and the upper surface of the vertical connecting member 30 is moved horizontally by the inclined surface of the vertical connecting main body 31, And a lower protruding piece 33 which is a vertical member is fixed to the lower side of the vertical connecting member 30 by a lower member (not shown) 20 so that the pair of lower supporting members 22 of the lower member 20 are vertically supported.

It is preferable to raise the height of the bridge upper structure 2 by 2 to 3 mm when the bridge upper structure 2 is pulled up to the hydraulic jack 60. At this time, in order to integrally join the pair of vertical connection bodies 31, The high strength connecting bolt 40 is inserted into the through hole 34 formed in the through hole 34 and is tightly coupled with the nut 41 from both sides of the vertical connecting body 31.

The lifting device (70) of the present invention structurally and securely supports the load by the bridge superstructure by means of two supporting means of the hydraulic jack (60) and the load supporting device (50) The load is supported by the vertical connecting member 30 while the upper side is inclined while being horizontally moved corresponding to the lifting height of the hydraulic jack 60 by the inclined supporting means and the lower side is vertically supported while being horizontally moved by the vertical supporting means, The horizontal load and the vertical load are converted and supported.

In the lifting device 70 of the present invention, the upper protruding piece 32 is horizontally moved and supported by the insertion groove 14 of the upper member 10 on the upper side of the vertical connecting member 30 by the lifting height of the hydraulic jack, The lower protruding piece 33 which is a vertical member is horizontally moved to and supported by the insertion groove 24 of the lower member 20 so that the lower side of the vertical connecting member 30 can be prevented from moving in an unexpected horizontal So that the load supporting device 50 can be integrally supported to be structurally and securely supported even when a load is applied.

A method of replacing a bridge support using a lifting apparatus according to the present invention will be described in detail when the bridge support installed in the bridge is replaced with a new bridge support due to the deterioration of the bridge support.

2 (a) to 2 (f) are perspective views illustrating a process of replacing a bridge support in a bridge using a lifting device according to an embodiment of the present invention. The present invention relates to an upper structure 2 and a lower structure 1 And a lifting device 70 is installed at a predetermined interval on the entire surface of the existing bridge support 3 in order to install a new bridge support by the deterioration of the bridge support.

After the bridge superstructure 2 is lifted to a predetermined height by the hydraulic jack 60 of the lifting device 70, the vertical connecting members of the load supporting device 50 disposed at the four corners of the lifting device 70 30 so that the upper inclined surface of the vertical connecting member 30 is supported in an inclined contact with the upper supporting member 12 of the upper member 10 raised by the lifting height of the hydraulic jack 60, The lower side of the vertical connecting member 30 is held in face-to-face contact with the lower supporting member 22 of the lower member 20 in a vertical direction, and a pair of vertical The high strength connecting bolts 40 passing through the connecting members 30 are fastened with the nuts 41 at both sides of the vertical connecting member 30. [

The existing bridge support 3 is removed while the bridge upper structure is supported by the hydraulic jack 60 and the load support device 50 and the new bridge support is installed to the hydraulic jack 60 and the load supporting device 50 Remove the lifting device (70) to replace the bridge support.

The present invention is structurally and securely supporting a bridge overhead structure by means of two supporting means, namely, a hydraulic jack and a load supporting device, even when the upper load of the bridge overhead structure is increased during replacement of a bridge support installed on the bridge using a lifting device. .

A reinforcing structure 80 is formed on both sides of the bridge substructure 1 and a lifting device 70 of the present invention is used on the upper side of the reinforcing structure 80, Hereinafter, a method for constructing the base 3 will be described in detail.

3 (a) to 3 (i) are perspective views illustrating a process of installing a bridge support on a bridge substructure using a lifting apparatus according to an embodiment of the present invention. As shown in FIG. 3 (a) The upper and lower chemical anchor reinforcing bars 81 are provided on both sides of the bridge lower structure 1 at a predetermined interval in order to install the bridge support 3 when the bridge support is not provided between the lower structure 1 and the lower structure 1, And one end of the chemical anchor reinforcing bar 81 is integrated with the vertical reinforcing bar 82. The horizontal reinforcing bars 83 are arranged at predetermined intervals in the chemical anchor reinforcing bar 81, And the reinforcing structure 80 is formed by pouring concrete so that the chemical anchor reinforcing bars 81, the vertical reinforcing bars 82 and the horizontal reinforcing bars 83 are embedded.

A work space in which a bridge support 3 can be installed is formed between the reinforcing structure 80 and the upper structure 2 formed on both sides of the bridge substructure 1 and the upper structure 2 and the reinforcing structure 80, The lifting device 70 of the present invention and the bridge support 3 are integrally joined together by welding or bolting.

Anchor bolts (84) are inserted into through holes (not shown) formed in the upper plate of the bridge support (3) and are embedded and fixed in the bridge upper structure (1).

The bridge upper structure 2 is lifted to a predetermined height by the hydraulic jack 60 of the lifting device 70 installed on the upper part of the reinforcing structure 80 and then the load supporting device The vertical connecting member 30 of the vertical connecting member 30 is horizontally moved inward so that the upper inclined surface of the vertical connecting member 30 contacts the upper supporting member 12 of the upper member 10 raised by the lifting height of the hydraulic jack, And the lower side of the vertical connecting member 30 is supported in face-to-face contact with the lower supporting member 22 of the lower member 20 in the vertical direction, The high strength connecting bolts 40 passing through the pair of vertical connecting members 30 are fastened with the nuts 41 at both sides of the vertical connecting member 30. [

After the bridge upper structure 2 is pulled up by the hydraulic jack 60 of the lifting device 70, the hydraulic jack 60 is removed in a state where the load supporting device 50 is engaged.

The vertical reinforcement 82 protruding above the reinforcing structure 80 and the horizontal reinforcing bar 85 having one end embedded in and fixed to the bridge substructure 1 and the other end protruded are formed of right and left male threads, And is integrally fastened to both sides of the vertical reinforcing bar 82 and the horizontal reinforcing bar 85 integrally by a coupler nut 86 formed of a right internal thread and a left internal thread.

Shrink mortar 87 to the lower surface of the bridge support 3 in a state where the vertical reinforcing bars 82 and the horizontal reinforcing bars 85 exposed to the upper portion of the reinforcing structure 80 are integrally joined by the coupler nuts 86, And a vertical cross section of the reinforcement structure 80 is installed to establish a bridge support 3 on the bridge substructure 1. [

In the present invention, when a bridge support is newly installed on a bridge, a reinforcing structure is installed on both sides of the bridge lower structure, and the lifting device and the bridge support of the present invention are integrally combined and installed on the upper side of the reinforcing structure. It is possible to increase the vertical cross section of the reinforcement structure by supporting the bridge support by the reinforcement structure and secure the work space in the bridge lower structure to facilitate the bridge support even if the bridge space is formed low in the bridge It is a technical feature that can be installed.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

1: Substructure 2: Superstructure
3: bridge support 10: upper member
11: top plate 12: upper support member
13: vertical stiffener 14: insertion groove
20: lower member 21:
22: lower support member 23: vertical stiffener
24: insertion groove 25: protrusion
30: vertical connecting member 31: vertical connecting body
32: upper projecting piece 33: lower projecting piece
34: Through hole 40: Connecting bolt
41: nut 50: load supporting device
60: Hydraulic jack 70: Lifting device
80: cantilever 81: chemical anchor steel
82: vertical reinforcement 83: horizontal reinforcement
84: anchor bolt 85: horizontal rebar
86: Coupler nut 87: Non-shrink mortar

Claims (5)

An upper support member (12) having a pair of upper and lower surfaces at a predetermined interval, the upper surface of which is longer than the lower surface and both sides of which are inclined; A vertical stiffener 13 formed at an outer side of the upper support member at a predetermined interval and an insertion groove 14 formed to be inserted and moved between the pair of upper support members, Member (10);
A lower support member 22 having a pair of spaced apart portions on both sides of the upper portion of the lower plate and a pair of vertical stiffeners 23 , And a lower member (20) comprising an insertion groove (24) formed to be inserted and moved between the pair of lower support members and a vertical connection member (30);
A pair of front and rear members are provided at predetermined intervals on both sides of the upper and lower members, and a through hole 34 is formed so that the inside of the upper edge of the rectangular parallelepiped is cut to form an inclined surface and the connection bolt 40 can pass therethrough. Upper and lower protruding pieces 32 and 33 protruding at a predetermined height in the lower center of the vertical connection body 31 so as to be inserted and moved into the connection body 31 and the upper and lower member insertion grooves A vertical connecting member 30;
A load supporting device 50 comprising a connecting bolt 40 inserted through and penetrating a through hole formed in a pair of vertical connecting members installed in the forward and backward directions between the upper and lower members and fastened with the nuts 41 at both sides, ≪ / RTI &
The lower protruding piece 33 formed in a rectangular shape having a flat bottom at the lower part of the vertical connection body 31 is inserted into an insertion groove 24 formed between the pair of lower support members 22,
Wherein the vertical connection member (30) horizontally moves along the front-rear direction of the lower support member (22) without a change in height. The lifting device according to claim 1, further comprising a hydraulic jack (60) installed at the center between the upper member and the lower member. 3. The lifting device according to claim 1 or 2, wherein the lower support member (22) is formed with a rectangular protrusion (25) at the center thereof. Installing the lifting device (70) of claim 1 at predetermined intervals between the bridge structure and the lower structures (1, 2) and raising the bridge upper structure (1) to a predetermined height by the hydraulic jack (60);
The vertical connection member 30 is horizontally moved inward in a state where the upper support member 12 and the vertical connection member 30 are spaced apart from each other by the rise of the upper structure 1, Tightening both sides of the connecting bolt (40) passing through the pair of vertical connecting members (30) with the nuts (41);
Replacing the existing bridge support 3 installed between the lower structures 1 and 2 on the bridge with a new bridge support 3; And
Removing the lifting device (70)
The vertical connecting member 30 is composed of a vertical connecting body 31 and upper and lower protruding pieces 32 and 33. The vertical connecting member 30 has a height Wherein the lifting device is horizontally moved without change of the lifting device. The chemical anchor reinforcing bars 81 are embedded on both sides of the bridge substructure 2 and embedded in the bridge substructure so that the vertical reinforcing bars 82 and the horizontal reinforcing bars 83 are integrally formed Forming a reinforcing structure (80) by pouring the concrete in a state where the reinforcing structure (80) is formed;
Installing the lifting device (70) and the bridge support (3) integrally with each other between the bridge superstructure (1) and the reinforcing structure (80);
Raising the bridge superstructure (1) to a predetermined height by the hydraulic jack (60) of the lifting device (70);
The vertical connection member 30 is moved inwardly in a state in which the upper support member 12 and the vertical connection member 30 are spaced apart from each other and brought into close contact with the upper support member 12 due to the rise of the upper structure 1, Tightening both sides of the connecting bolt (40) passing through the pair of vertical connecting members (30) with a nut (41), and removing the hydraulic jack;
Inserting and passing anchor bolts (84) through the through holes formed in the upper plate of the bridge support (3), filling and fixing the bridge bolts (84) in the bridge upper structure (1);
The horizontal reinforcing steel bar 85 having one end embedded in and fixed to the vertical reinforcing bars 82 protruding above the reinforcing structure 80 and the bridge lower structure 2 and the other end projecting from the bridge reinforcing bars 85, Removing the hydraulic jack (60);
And a vertical cross section of the reinforcement structure (80) by installing a non-shrinkage mortar (87) to a lower surface of the bridge support (3). Construction method.
KR1020150073184A 2015-05-26 2015-05-26 Lifting device of upper structure of bridge and Replacing method of bridge bearing and Installing method of bridge bearing at lower structure using the same KR101696450B1 (en)

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KR100997423B1 (en) 2010-07-07 2010-12-01 심규숙 Bridge lifting method and lifting apparatus with temporary bearing function
KR101153431B1 (en) * 2012-03-16 2012-06-07 심규숙 Apparatus for controlling the position of upper structure for lifting the bridge and the method for increasing the cross section of lower structure using the same apparatus
KR101254063B1 (en) 2012-09-24 2013-04-12 (주)진성테크 Bridge protector and lifting apparatus and method of bridge upper structure having the same

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