KR101696138B1 - Bridge bearing change method - Google Patents

Bridge bearing change method Download PDF

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Publication number
KR101696138B1
KR101696138B1 KR1020160033222A KR20160033222A KR101696138B1 KR 101696138 B1 KR101696138 B1 KR 101696138B1 KR 1020160033222 A KR1020160033222 A KR 1020160033222A KR 20160033222 A KR20160033222 A KR 20160033222A KR 101696138 B1 KR101696138 B1 KR 101696138B1
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KR
South Korea
Prior art keywords
jack
lifting
support
fish
bridge
Prior art date
Application number
KR1020160033222A
Other languages
Korean (ko)
Inventor
이경한
송우호
Original Assignee
이경한
송우호
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Priority to KR1020160033222A priority Critical patent/KR101696138B1/en
Application granted granted Critical
Publication of KR101696138B1 publication Critical patent/KR101696138B1/en

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
    • 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
    • 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
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/04—Bearings; Hinges
    • E01D19/042—Mechanical bearings
    • E01D19/046—Spherical bearings

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

Abstract

The present invention relates to a method of replacing a small space bridge bearing using a beam bracket, wherein a separate beam bracket can be used to simultaneously raise the fish beam by the pull-up jack on both sides, So that the work can be efficiently performed.
In order to achieve the above object, the present invention provides a method of replacing and repairing a bridge support (400) mounted on an upper surface of a bridge pier (300) for supporting a fish beam (200) A pulling device arranging step of arranging a plurality of pulling devices provided on the jack base (10) on the lower side of the fish beam (200), respectively, in a symmetrical manner; A beam bracket 50 having symmetrical support wings 51 on both sides is installed on the lower portion of the fish beam 200 so that the support wings 51 are seated on the upper portion of the lifting device. ; A lifting jack lifting step of raising the lifting jack 20 up to raise the lifting height of the lifting jack 200 to a predetermined height; A bridge support replacement step of replacing the bridge support (400) in a state where the fish beam (200) is pulled up; A lifting and lowering operation of the lifting jack 20 to allow the fish beam 200 to be seated on the bridge support 400 'when the bridge support replacement operation is completed; And a device removing step of removing the beam bracket 50 and the lifting device after descending the fish beam 200, respectively.

Description

[0001] BRIDGE BEARING CHANGE METHOD [0002] BACKGROUND OF THE INVENTION [0003]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bridge restoration method, and more particularly, to a bridge restoration method in which bridge restoration can be easily performed even in a narrow space between a PC beam and a bridge pier, Bridge restoration method.

Typically, a plurality of fish beams are laid longitudinally along a lane at an upper portion of a pier between a pier bridge of a concrete bridge (a fish beam bridge) and a bridge pier. In this case, an anchor metal plate exposed to the bottom of the fish beam, And the foundation anchor of the bridge support is fixed on the reinforced steel which is arranged in the inside by a robust means such as welding.

These bridge supports are responsible for transferring and cushioning the reaction force caused by vibrations such as loads transferred from bridge superstructures such as roofs, vehicles passing through the roofs, or earthquakes. However, bridge installations installed in such old concrete bridges It is not possible to prepare for earthquake resistance, and repair work is underway to replace the bridge bearing prepared for seismic design recently.

As an example of the prior art for replacing and repairing a tightly placed coplanar device between the upper part of the pier and the lower part of the fish beam as described above, Patent Registration No. 1248838 discloses a method of replacing a coarse- Discloses a technique related to the present invention.

However, in the above-mentioned conventional technique, the pull jack is installed at the lower part of the bridge top plate in order to perform the method, but the space between the bridge top plate and the bridge is narrow, which makes it difficult to perform the installation work.

The present invention has been proposed in order to solve the problems in the prior art, and it is an object of the present invention to provide a replacement method in which a bridge support replacement work can be easily performed in a narrow space, thereby improving work efficiency and preventing a safety accident .

According to an aspect of the present invention, there is provided a bridge support replacing method for replacing and repairing a bridge support seated on an upper surface of a bridge pier for supporting a fish beam on which an upper plate of a bridge is mounted, A step of arranging a pulling device disposed on both sides of a lower portion of the beam, respectively; A beam bracket mounting step of mounting a beam bracket having symmetrically formed supporting wings on both sides of the beam to the bottom of the fish beam so that the supporting wings are seated on the upper part of the lifting device; A lifting jack lifting step of lifting up the lifting jack to raise the lifting height of the lifting jack to a predetermined height; A bridge support replacement step of replacing the bridge support in a state in which the fish beam is pulled up; A lifting operation of the lifting jack to lower the lifting jack when the replacement work of the bridge support is completed, so that the fish beam is seated on the bridge support; And a device removing step of removing the beam bracket and the lifting device, respectively, after the lowering of the fish-eye beam.

In the bridge support replacement method of the present invention, it is possible to simultaneously perform the operation of lifting the fish beam by the pull-up jack on both sides by using a separate beam bracket, so that the replacement work for the bridge support can be efficiently performed even in a small work space .

1 is a schematic structural view of a general bridge support installed state.
FIG. 2 is a front view of a bridge support installed state where replacement is made in the present invention; FIG.
FIG. 3 is a side view of the bridge support installed in the present invention. FIG.
4 is a state in which the pull-up jack is installed according to the first embodiment of the present invention.
FIG. 5 is a state in which the beam bracket is installed according to the first embodiment of the present invention; FIG.
6 is a side view of the beam bracket according to the first embodiment of the present invention.
7 is a sectional view of a beam bracket according to the present invention.
8 is a perspective view of a beam bracket part in the present invention.
9 is a view showing a state in which the fish-eye beam is lifted in the present invention.
10 is a state in which the old bridge support is removed in the present invention.
11 is a state in which a new bridge support is installed in the present invention.
FIG. 12 is a view illustrating a state in which the lifted fish beam is retracted in the present invention. FIG.
FIG. 13 is a state in which the bridge support is replaced in the present invention. FIG.
FIG. 14 is a side view of the pulling device installed state according to the second embodiment of the present invention. FIG.
15 is a cross-sectional structural view of a telescopic guide plate according to a second embodiment of the present invention.
16 is an exploded perspective view of a telescopic guide plate in a second embodiment of the present invention.
17 is a plan view of the jack base in the second embodiment of the present invention.
Fig. 18 is a drawing of the pull-up device driving state in the second embodiment of the present invention. Fig.
Fig. 19 is a state in which the support bolt is raised in the second embodiment of the present invention. Fig.
20 is a cross-sectional view of a support bolt in a third embodiment of the present invention.
21 is a cross-sectional view of the support bolt in the third embodiment of the present invention.
22 is a structural view of a pulling device in a third embodiment of the present invention.
23 is a detailed view of a main portion of a telescopic guide plate in a third embodiment of the present invention.
Figure 24 is a spring exploded view in a third embodiment of the present invention.

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

As shown in FIGS. 1 to 3, in order to support the fish beam 200 on which the upper plate 100 of the bridge is placed, in a state where the bridge support 400 is seated on the upper surface of the bridge pier 300, The bridge rest replacement process according to the first embodiment of the present invention will be described with reference to FIGS. 4 to 13. FIG.

<Step of arranging the lifting device> (ST 1)

First, as shown in FIG. 4, a plurality of lifting devices provided on the jack base 10 are arranged symmetrically on both sides of the bottom of the fish beam 200, respectively.

That is, at this time, in order to allow the pull-up jack 20 to be disposed on both sides of the fish beam 200 at a position where the narrow space between the fish beam 200 and the pier 300 is spaced, The devices are arranged in a symmetrical form.

&Lt; Installation step of beam bracket > (ST 2)

When the installation of the pull-up jack 20 is completed, the beam bracket 50 is installed below the fish beam 200 as shown in FIGS. 5 and 6 so as to receive a force for pulling up.

In order to receive the force of the pull-up jack 20, the support brackets 51 are symmetrically formed on both sides of the beam bracket 50, as shown in FIGS. 7 and 8, 200 may be wrapped around the bottom surface of the bottom surface of the bottom plate.

<Lift up jack lift operation step> (ST 3)

9, the fish beam 200 is lifted up to a predetermined height together with the bridge top plate 100, so that the bridge support 400 and the bottom surface of the fish beam 200 are lifted up, A certain interval is generated between them.

That is, at this time, pulling force by the pull-up jack 20 is simultaneously applied to the support vanes 51 on both sides of the beam bracket 50, so that the fish beam 200 can be lifted and the bridge support 400 can be replaced State.

&Lt; Replacement step of bridge support > (ST 4)

When the lifting of the fish beam 200 is completed, the existing bridge support 400 is removed as shown in FIG. 10, and a new bridge support 400 'is installed as shown in FIG. 11 .

<Step of lowering the impression jack> (ST 5)

When the replacement operation of the bridge support is completed, the lifting jack 20 is lowered and operated so that the fish beam 200 is seated on the bridge support 400 'as shown in FIG.

<Step of removing the lifting device> (ST 6)

When the lifting device such as the beam bracket 50 and the lifting jack 20 are removed after the lifting of the fishbeam 200 as shown in FIG. 13, the bridge support 400, which is replaced as shown in FIG. 13, (300).

Therefore, in the present invention, the operation of lifting the fish beam 200 by the pull-up jack 20 can be performed by using the separate beam bracket 50, so that the replacement work for the bridge support 400 can be performed even in a small work space It is possible to exhibit the effect of being able to be efficiently performed.

14 to 19 illustrate a technical method according to the second embodiment of the present invention. In the pull-up device placing step ST 1, a jack mount 10 in which the pull-up jack 20 is seated is provided at the center of the jack- The upper and lower plates 41 and 42 are formed on the upper portion of the pull-up jack 20 to guide the elongated and contracted flow of the fish beam 200 in the throttle direction. And a plurality of guide rods 43 are provided between the upper plate 41 and the lower plate 42. The upper plate 41 constituting the extending and retracting guide plate 40, The upper and lower plates 42 and 42 are provided with the lifting grooves 41a and 42a on which the guide rods 43 are mounted.

9, when the lifting jack is lifted up, the support bolt 30 is lifted up in a state in which the fish beam 200 is pulled up as shown in FIG. 9 through the lifting jack up operation ST3, The supporting bolt lifting step ST3-1 for supporting the supporting wing portion 51 is further carried out so that the supporting state of the lifting jack 20 and the supporting bolt 30 is maintained, ) Can exhibit an advantage that the elevated state can be stably maintained.

Particularly, in the process of lifting or raising the fish beam 200, the fish beam 200 can be generated in the throttling direction. In this throttling flow, the guide rod 43 is moved into the seating groove 41a The upper plate 41 can be guided by being moved together.

Therefore, it can be understood that the transition of the lifting device due to the flow of the upper plate 100 in the throttle direction is prevented, and the replacement of the bridge support 400 can be performed stably.

20 to 24 show a technique according to the third embodiment of the present invention. In the pulling-device placing step ST1, bolt grooves (not shown) are formed on both sides of the jack- The support bolt 30 is formed with a predetermined depth and an elastic spring 13 for supporting the support bolt 30 with a predetermined elastic force is formed in the bolt groove 12, The stopper holes 31 are formed at predetermined intervals and the stopper pins 32 are fastened to the stopper holes 31 so that the lowering of the support bolts 30 can be limited.

A guide groove 21 forming a predetermined curved surface is formed on the upper surface of the pull-up jack 20 and a lifting device in which a hemispherical bearing 22 having a hemispherical shape is seated is disposed in the guide groove 21, On the upper surface of the bearing 22, a friction pad 23 for increasing frictional force with the elasticity guide plate 40 is integrally formed.

23, a lubricating coating layer 42b made of Teflon is formed in the seating groove 42a of the expansion and contraction guide plate 40 so that the flow of the guide rod 43 can be smoothly performed, Elastic spring 44 for supporting the flow of the guide rod 43 at a constant elastic force is formed on both side walls of the elastic spring 44. The elastic pad 44 is formed in a shape in which the buffer pad 45 surrounds the periphery, Preferably, the buffer pad 45 is formed with an opening 45a having one side opened so that the diameter of the buffer pad 45 can be changed.

The support bolt 30 is elastically supported within the bolt groove 12 by the elastic spring 13 so that the lifting operation of the support bolt 30 in the lifting jack up operation ST3 It is possible to achieve more stable and stable maintenance of the elevated state.

When the stopper pin 32 is fastened to the upper stopper hole 31, the support bolt 30 can be prevented from being lowered due to the upper load, And the state can be stably maintained.

The elastic guide plate 40 can be rotated together with the fish beam 200 by the hemispherical bearing 22 even if the fish beam 200 is inclined at a fine angle in the lifting process of the bridge upper plate 100 .

Since the frictional pad 23 for increasing frictional force with the bottom surface of the elastic guide plate 40 is integrally provided on the hemispherical bearing 22 at the top of the hemispherical bearing 22, .

Therefore, even if the fisheye beam 200 is inclined at a slight angle during the lifting and lowering process, the state in which the elasticity guide plate 40 is in close contact with the bottom surface of the fisheye beam 200 can be maintained at all times, It represents an advantage.

At the same time, the guide rod 43 can smoothly flow in the seating groove 42a by the lubricating coating layer 42b in accordance with the expansion and contraction action of the fish beam 200 in the throttle direction, So that the shock can be absorbed by the elastic spring 44 and the breakage can be prevented.

Particularly, since the elastic pad 44 is wound around the opening-type buffer pads 45, the effect of maximizing the elastic action force is exhibited.

Although specific embodiments of the present invention have been illustrated and described above, it should be apparent that the present invention can be embodied with various modifications and changes without departing from the spirit and scope of the invention.

For example, in the case where the size of the fish beam 200 is different according to the situation of the site, and a clearance is generated between the beam bracket 50 and the steel bracket 50, Respectively.

Therefore, it should be understood that such modified embodiments should not be individually understood from the technical spirit and scope of the present invention, and such modified embodiments should be included in the appended claims of the present invention.

10: Jack base 11: Jack seat
12: Bolt groove 20: Impression jack
30: support bolt 40: stretchable guide plate
41: top plate 42: bottom plate
41a, 42a: seat groove 43: guide rod
50: beam bracket 51: support wing
100: bridge top plate 200: fish beam
300: Pier 400,400 ': Bridge bearing

Claims (5)

The lifting jack 20 is installed on the top of the jack pedestal 10 in order to replace and repair the bridge support 400 mounted on the upper surface of the pier 300 in order to support the fish beam 200 on which the upper plate 100 of the bridge is seated. A pulling device arrangement step of arranging a plurality of pulling devices symmetrically on both lower sides of the fish beam 200 and a beam bracket 50 having symmetrical support wing parts 51 on both sides thereof A beam bracket mounting step for mounting the support wing part 51 on the upper part of the lifting device while being installed at a lower part of the fish beam 200 and ST2 for lifting up the lifting jack 20, (ST3) a bridge support replacement step of replacing the bridge support (400) in a state in which the fish beam (200) is pulled up, and (ST4) When the operation of replacing the base is completed, the lifting jack 20 is operated to descend so that the fish beam 200 is seated on the bridge support 400 ' (ST 5), and a device removing step (ST 6) for removing the beam bracket (50) and the lifting device after descending the fish beam (200), the method comprising:
In the pulling-device placing step ST1, a jack-receiving groove 11 in which the pull-up jack 20 is seated is formed at the center of the jack-receiving base 10, a supporting bolt 30 is fastened to both sides thereof, The upper part of the jack 20 is divided into an upper plate 41 and a lower plate 42 for guiding the expansion and contraction flow of the fish beam 200 in the thrashing direction and between the upper plate 41 and the lower plate 42, 43 and the upper plate 41 and the lower plate 42 constituting the extension and contraction guide plate 40 are provided with a seating groove 43 in which the guide rod 43 is seated The supporting bolts 30 are lifted up after the lifting jack up operation step ST3 so as to support the supporting wings 51 of the beam brackets 50. As a result, The rising step ST 3 - 1 is additionally performed so that the raised state of the fish beam 200 can be stably maintained;
In the lifting device placing step ST1, bolt grooves 12 are formed at both sides of the jack base 10 so that the height of the support bolt 30 can be adjusted. In the upper surface of the lifting jack 20, And a lifting device in which a hemispherical bearing (22) having a hemispherical shape is seated is disposed in the guide groove (21);
In the lifting device placing step ST1, a frictional pad 23 for increasing frictional force with the elasticity guide plate 40 is integrally formed on the upper surface of the hemispherical bearing 22. Inside the bolt groove 12, A stopper hole 31 is formed in the support bolt 30 at a plurality of positions in a longitudinal direction at predetermined intervals and the stopper hole 31 31 and the stopper pin 32 are fastened so that the lowering of the support bolt 30 is limited and the lubricant coating layer 42b of Teflon is formed on the seating groove 42a so that the guide rod 43 can smoothly flow. And elastic cushions 44 for supporting the flow of the guide rod 43 with a constant elastic force are formed on both side walls of the seating groove 42a and a buffer pad 45 is formed on the elastic spring 44 And the buffer pad 45 is formed in a shape that surrounds the buffer pad 45 A pull-up device in which an opening 45a having one side opened is provided so as to be variable in diameter;
A Method of Replacement of Small Space Bridge Support Using Beam Bracket. The method according to claim 1,
The beam bracket 50 installed in the beam bracket installation step ST 2 is formed with a fish beam receiving groove 52 formed at an upper portion thereof so that the bottom surface of the fish beam 200 can be seated. A Method of Replacement of Small Space Bridge Support Using Beam Brackets. delete delete delete
KR1020160033222A 2016-03-21 2016-03-21 Bridge bearing change method KR101696138B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112095494A (en) * 2020-09-30 2020-12-18 中交路桥华南工程有限公司 Construction method for heightening bridge pad stone
CN115615835A (en) * 2022-09-14 2023-01-17 南京交通职业技术学院 Concrete member bearing capacity verifying unit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040034368A (en) * 2003-08-22 2004-04-28 김해영 bearing for jacking up upper structure of bridge
KR101150765B1 (en) * 2012-02-21 2012-06-08 엔이티엔지니어링 주식회사 Lifting jack for exchange of bridge bearing
KR101248838B1 (en) * 2012-12-28 2013-04-03 대경산업(주) A lifting jack of upper structure of bridge and method for changing bridge bearings using them
KR101284431B1 (en) * 2012-12-24 2013-07-09 피엔에이건설 주식회사 Oil jack using shoe construction methodfor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040034368A (en) * 2003-08-22 2004-04-28 김해영 bearing for jacking up upper structure of bridge
KR101150765B1 (en) * 2012-02-21 2012-06-08 엔이티엔지니어링 주식회사 Lifting jack for exchange of bridge bearing
KR101284431B1 (en) * 2012-12-24 2013-07-09 피엔에이건설 주식회사 Oil jack using shoe construction methodfor
KR101248838B1 (en) * 2012-12-28 2013-04-03 대경산업(주) A lifting jack of upper structure of bridge and method for changing bridge bearings using them

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112095494A (en) * 2020-09-30 2020-12-18 中交路桥华南工程有限公司 Construction method for heightening bridge pad stone
CN115615835A (en) * 2022-09-14 2023-01-17 南京交通职业技术学院 Concrete member bearing capacity verifying unit

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