KR20170054926A - Reparing method of mono-cell joint apparatus using steel bar - Google Patents

Reparing method of mono-cell joint apparatus using steel bar Download PDF

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Publication number
KR20170054926A
KR20170054926A KR1020150157695A KR20150157695A KR20170054926A KR 20170054926 A KR20170054926 A KR 20170054926A KR 1020150157695 A KR1020150157695 A KR 1020150157695A KR 20150157695 A KR20150157695 A KR 20150157695A KR 20170054926 A KR20170054926 A KR 20170054926A
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KR
South Korea
Prior art keywords
expansion joint
mono
side plates
concrete
cell type
Prior art date
Application number
KR1020150157695A
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Korean (ko)
Inventor
희민 박
안창모
Original Assignee
대창이엔지 주식회사
안창모
희민 박
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Application filed by 대창이엔지 주식회사, 안창모, 희민 박 filed Critical 대창이엔지 주식회사
Priority to KR1020150157695A priority Critical patent/KR20170054926A/en
Publication of KR20170054926A publication Critical patent/KR20170054926A/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
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/06—Arrangement, construction or bridging of expansion joints
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00—Details of pavings
    • E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00—Details of pavings
    • E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
    • E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
    • E01C11/10—Packing of plastic or elastic materials, e.g. wood, resin
    • 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
    • E01D19/06—Arrangement, construction or bridging of expansion joints
    • E01D19/062—Joints having intermediate beams
    • 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

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The present invention relates to a method for replacing a mono-cell type expansion joint device more rapidly and economically by simply replacing a sealing seal without removing concrete around the mono-cell type expansion joint device such as post-placed concrete. The method for replacing the mono-cell type expansion joint device includes: (a) a step of cutting an upper central part of an expansion joint member and separating a part of an upper part of the expansion joint member attached to inner lateral surfaces of both lateral plates from the lateral plates by cutting the upper part (A) of the expansion joint member, except for both upper parts of the expansion joint member coming into the post-placed concrete, along the inner surfaces (B1) of both lateral plates in a perpendicular downward direction with a cutting device without crushing the post-placed concrete formed around the mono-cell type expansion joint device; (b) a step of exposing a space (S) where both upper parts of the expansion joint member are exposed by additionally removing a lower part of the cut expansion joint member and both upper parts of the expansion joint member coming into contact with the post-placed concrete; (c) a step of installing and fixating the reinforcing steel rod in an extension direction of both lateral plates onto top surfaces of both lateral plates; and (d) a step of inserting and installing a sealing seal formed into a rectangular shape between the inner surfaces (B1) of both lateral plates with an adhesive.

Description

TECHNICAL FIELD [0001] The present invention relates to a method for replacing a mono-cell type stretch joint device using a reinforcing steel bar,

The present invention relates to a method for replacing a mono-cell type expansion joint using a reinforcing steel rod. More specifically, the present invention relates to a method of replacing a mono-cell type expansion joint by a simple and quick replacement of a stretch joint without easily removing the after-concrete of the mono-cell type expansion joint.

The expansion joints absorb the horizontal movement and rotation of the bridge due to the expansion and contraction of the bridge due to temperature, the drying shrinkage of the concrete and the creep and live load, thereby smoothly running the vehicle and preventing the storm from entering the substructure Thereby preventing the aging of the bridge.

The expansion joints are classified into a rubber type and a steel type. The rubber type is divided into NB type and monocell type, and the steel type can be classified into a rail type and a finger type.

The finger type is to allow the steel fingers to accommodate the stretching while being interlaced, and the rail type is based on the rotation of the spherical bearing and the expansion and contraction of the beam due to the elastic displacement of the elastic bearing.

In the NB type, the rubber and the steel plate are integrally formed and are configured to perform the expansion and contraction by the deformation of the rubber,

The monocell type is a method of accommodating the expansion and contraction using the elastic deformation of the rubber.

Specifically, the monocell method has advantages in that the structure is simple, the construction is simple and easy to repair, the running surface is rubber, the impact absorption is better than that of the steel product, and the width of the joint is small and the running property is good.

However, in the monocell method, since the rubber abuts directly against the vehicle wheel, the abrasion is severe, the durability is somewhat low, and the angle and the rubber are not integrated with each other due to the construction.

FIGS. 1A and 1B show a replacement construction of a conventional mono-cell type expansion joint.

That is, a pair of upper plates 12, on which a plurality of fastening holes 11 are formed, are spaced apart, a side plate 13 is integrally formed on the bottom surface of the upper plate 12, An integral monocell 10 having both sides of an expansion joint 14 formed by recessing the expansion grooves 14a on the upper and lower sides thereof integrally;

A pair of upper fixing plates 21 to which the upper plate 12 is seated and fixed are spaced apart and a screw hole 22 communicating with the fixing holes 11 is formed in the upper fixing plate 21, A side support plate 23 for supporting the side plate 13 in close contact with the inner end of the side support plate 21 is bent downward and a plurality of stud anchors 24 are spaced apart from the outer surface of the side support plate 23 And a pair of mono-cell fixation holders 20 integrally attached to each other.

Therefore, if replacement is required due to problems such as breakage of the mono-cell type expansion joint,

As shown in FIG. 1B, the filled concrete 3 is separated from the monocell fixing holder 20 by loosening the integral monocell 10 without breaking the fastening member 30 so that the new integrated monocell 10 is divided into a pair of mono cells 10, So that it is inserted into the cell fixing holder 20.

That is, it is possible to omit the step of reinforcing the reinforcing steel of the after-concrete process by replacing only the mono-cell with the old mono-cell by the stretch jointing material, but it is also possible to separate the mono-cell fixing holder 20 from the mono- There is a problem in that it is difficult to manufacture because of a problem to be made.

1C is a view showing a separation operation of a stretchable joint material in a mono-cell type expansion joint device in a case where the conventional mono-cell type expansion joint device is not separately manufactured as in the case of the pair of mono-cell fixture holders 20 and the mono- to be.

That is, as the time elapses, the expansion and contraction joints have a problem that the worker hits the hammer and the separator for separating the expansion joint material adhered by the adhesive or the like on the inside of the mono-cell type expansion joint device after removing the top plate. There is a problem that the efficiency of the operation is inevitably lowered.

Further, since the plurality of mono cells 10 are fastened while being joined by the fastening member 30 and the connecting member in the transverse direction of the bridge even after the repair, as shown in Fig. 1d, the vibration of the after- Cracks inevitably occur.

In addition, in the above method, due to the structure, defective adhesion between the expansion joint and the side plate due to vibrations in the connecting member necessarily occurs, and the defective section continuously increases, and the excellent flows into the lower structure of the bridge to accelerate the aging of the bridge .

Accordingly, in the mono-cell type expansion joint device in which the both sides of the expansion joint material are integrally attached, the expansion joint material can be simply removed, and the rectangular seal type seal can be inserted therein, thereby quickly and economically replacing the mono-cell type expansion joint device The present invention has been made in view of the above problems.

Further, it is a technical object to provide a replacement method of a mono-cell type expansion joint device which is more stable and less susceptible to defects since the position of the hermetic seal can be limited.

Further, it is a technical object to provide a method of replacing a mono-cell type expansion joint device capable of easily finishing (using an adhesive) the after-concrete caused by reflection cracks generated after the mono-cell type expansion joint device is quickly replaced .

According to an aspect of the present invention,

In the mono-cell, the upper end of the expansion joint exposed to the outside is vertically cut by a cutting machine, and the upper and lower ends of the expansion joint are vertically cut. The reinforcing steel bars are fixed on the upper surfaces of the both side plates, the upper and lower spaces of the removed reinforcing joints are sealed, and a rectangular parallelepiped sealing seal is formed in the space between both side plates It is possible to replace the mono-cell type expansion joint by simply inserting (using a non-vulcanizing adhesive).

Secondly, the hermetic seal is positioned between both side plates at a position lower than the setting position of the reinforcing steel bar so as to prevent breakage or the like caused by the passage of the vehicle or the like, and foreign matter, rain, etc. can be efficiently guided.

To this end,

(a) Unlike the upper ends of the stretch joints which are in contact with the after-concrete using a cutting machine, the upper concrete of the stretch joints ( A) is cut vertically downward so that the upper and middle portions of the expansion joint material are cut and the expansion joint attached to the inner side surfaces of the both side plates is partially separated from the both side plates by the cutting machine; (b) removing the lower end of the cut expansion joint material and removing both upper ends of the expansion joint material in contact with the after-concrete to expose the space S occupied by both upper ends of the expansion joint material; (c) installing and fixing the reinforcing steel bars on the upper surfaces of the both side plates in the extending direction of both side plates; And (d) inserting a sealed seal of a rectangular parallelepiped shape in between the inner side surfaces (B1) of the both side plates using an adhesive agent, and a method of replacing the mono-cell type expansion joint device using the reinforcing steel bar.

If the space between both side plates is secured, the other fixing members of the mono-cell type expansion joint, including the after concrete around the mono-cell type expansion joint, can be replaced without damaging the damaged expansion joint, It is possible to provide a replacement method of the cellular type expansion joint.

In addition, the sealed seal used for replacement can be placed between both side plates at a position lower than the setting position of the reinforcing steel bar to prevent breakage due to passage of a vehicle or the like, and thus a mono-cell type expansion joint It is possible to provide a replacement method of the apparatus, and the reflection crack can be simply closed and repaired.

Figs. 1A and 1B are views showing replacement of a conventional mono-cell type expansion joint,
FIGS. 1C and 1D are photographs showing the removal of the expansion joint and the occurrence of reflection cracks in the conventional mono-cell type expansion joint,
FIG. 2 is a perspective view of a mono-cell type expansion joint according to the present invention,
FIGS. 3A, 3B, 3C, and 3 D are flowcharts of a replacement method of a mono-cell type expansion joint according to the present invention,
4 is an exemplary view of a cutting machine for cutting a stretch joint material according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

[Mono-cell type expansion joint device (100) of the present invention]

FIG. 2 is a perspective view showing a configuration before maintenance of the mono-cell type expansion joint according to the present invention. FIG.

The mono-cell type expansion joint device according to the present invention is composed of first and second side plates 110, a stretch joint 120, and a post-concrete 300 spaced apart from the flow field 112.

The above-described mono-cell type expansion joint device is characterized in that the expansion joint 120 is attached to the upper surface of the first and second side plates 110 by being installed in a manner such that the expansion joint 120 is installed. The expansion joint 120 exposed during the passage of a vehicle or the like may be damaged.

The first and second side plates 110 are joined to and rigidly joined with the later concrete 300 and the inner side surfaces of the first and second side plates 110 and 120 are joined to each other by vulcanization (both sides of the stretch joint 120 are formed by adding a rubber material and sulfur for the expansion joint material, And a method of connecting the expansion joints to each other while fusing with high temperature).

A plurality of stud anchors 119 are integrally formed on the outer surfaces of the first and second side plates 110 at predetermined intervals in the lateral direction of the bridges. The plurality of stud anchors 119 are embedded in the after-put concrete 300 and remain fixed.

Since both sides of the expansion joint 120 are attached to the first and second side plates 110, they can freely expand and contract in the longitudinal direction of the bridge in accordance with the horizontal movement of the bridge due to the temperature rise and the like.

At this time, it can be seen that they are exposed as a road surface to be fitted on the upper surfaces of the first and second side plates 110, and the upper surface is formed with guide grooves, so that foreign matters such as rain, do.

As a result, the expansion joint 120 is inevitably contacted with the wheels of the vehicle, and it is time-consumed to be aged and damaged, thus necessitating replacement.

At this time, since the transverse width of the bridge extends from several meters to tens of meters, the mono-cell type expansion joint must be connected by the connection part. Although not shown, a fastening device is formed at the connecting portion.

The fastening device is formed to include a connecting flange extending from an outer surface and a transverse end of each of the side plates 100 to connect the side plates 110 in the lateral direction. The fastening device is provided with fasteners such as bolts and nuts, The connecting flange is tightened by welding or the like.

As the connecting portion is formed in such a mono-cell type expansion joint device, reflection cracks are generated in the after-concrete 300 around the connection portion of the mono-cell type expansion joint device due to continuous vibration of the vehicle, So that the crack becomes larger.

In addition, due to the vibration and adhesion failure, the vulcanized and fused portions on the inner surfaces of the first and second side plates 110 may be adhered poor or even fall off, and foreign matter or foreign matter may flow into the lower structure of the bridge. Accordingly, it is necessary to repair the mono-cell type expansion joint device, and a method for repairing the mono-cell type expansion joint device according to the present invention will be described below.

[How to replace the mono-cell type expansion joint]

FIGS. 3A, 3B, 3C, and 3D illustrate a flowchart of a method for replacing a mono-cell type expansion joint according to the present invention.

3A and 3B, the mono-cell type expansion joint apparatus 100 is constructed such that the expansion joints 120 are respectively installed on the upper ends of the side plates 110 and the inner side surfaces of the side plates 110 It can be seen that the monolithic cell is an integral monolith with its side surfaces integrally attached.

It can be seen that the side plates 110 are installed to be integrated by the after-concrete 300 on the adjacent bottom plate 200 by means of the unshown fastening device.

When the back-up concrete 300 is formed around the expansion joint material 120 and the expansion joint material 120 in which the expansion joint material 120 and the both side plates 110 are integrally formed needs to be replaced

Since both sides of the expansion joint 120 and the upper end of the expansion joint 120 are attached to the both side plates 110 in a vulcanizing manner, it is very difficult to separate the expansion joint 120 from the side plate 110 over time.

Conventionally, the after-concrete 300 is crushed and the entirety of the monocell type expansion joint device 100 has to be replaced.

However, the present invention provides a method of replacing the expansion joint 120 with the hermetic seal 150 without touching the after-concrete 300 for embedding and fixing the mono-cell type expansion joint 100.

3B, the upper and lower ends of the expansion joint 120, which are in contact with the later concrete 300, except the upper ends A of the expansion joints 120, are aligned with the inner side B1 of the both side plates 110, Is cut downward.

At this time, a plasma cutter or the like may be used as the cutter as shown in FIG. The advantage of using such a cutting machine is that cutting can be performed more quickly and accurately than manual cutting.

It can be seen that both upper ends of the expansion joint 120 are cut and a part of the upper end of the expansion joint 120 adhered to the inner side surfaces of the both side plates 110 can be slightly separated from the side plate by the cutting machine, It is possible to easily remove the expansion joint 120 even if the expansion joint 120 is positioned at the lower portion of the expansion joint 120.

That is, the upper central portion of the expansion joint 120 is cut, and the expansion joint 120 adhered to the inner side surfaces of the both side plates is partially separated from the both side plates by the cutting machine.

The remaining portion 120a of the expansion joint 120 contacting the both side plates 110 is further separated so that the inner side surface of the expansion joint 120 and the inner side surface of the side plate 110, It can be seen that it is formed in a linear shape.

At this time, the inner side surface of the expansion joint 120 and the inner side surface of the side plate 110 are formed in the same vertical line shape to quickly assure a precise space for inserting the hermetic seal 150 to be described below to be.

If a portion 120b of both upper ends A of the expansion joint 120 in contact with the after-concrete 300 is also horizontally removed, the space S occupied by both upper ends of the expansion and contraction joint 120 is exposed to the road surface .

That is, the upper end 120b of the expansion joint 120, which is in contact with the after-concrete 300, is further removed by removing the lower end 120a of the cut expansion joint 120, (S) is exposed.

3C, the reinforcing steel bar 130 is fixed to the upper ends of the both side plates 110 by welding or the like.

Since the reinforcing steel bar 130 removes the expansion joint 120 exposed to the road surface, a step is formed on the upper surface and the road surface of the both side plates, and the space for removing both ends of the expansion joint is sealed with the sealing material 160. [ It is necessary to prevent the sealing material from penetrating between the side plates.

Further, the reinforcing steel bar 130 is exposed to the road surface, and serves as a part of the hermetic seal 150 to be protected by the vehicle.

When the reinforcing steel bar 130 is installed in the extension direction of both side plates by welding or the like, the space occupied by both ends of the expansion joint 120 on both sides of the reinforcing steel bar 130 is closed with the sealing material 160.

Such sealing of the sealing material 160 can fill the side of the reinforcing steel bar 130, thereby buffering the reinforcing steel bar 130 when an impact is applied thereto, and securing the aesthetics through the finishing .

Next, as shown in FIG. 3D, the sealing seal 150 in the form of a rectangular parallelepiped is positioned slightly below the reinforcing steel bars 130, and is simply fixed to both the side plates 110 with an adhesive that is not vulcanized.

At this time, the upper surface of the hermetic seal 150 is formed at a position slightly lower than the upper surface of the reinforcing steel bar 130, so that it is possible to form an induction passage (arrow mark) for draining the hermetic seal from the upper surface of the hermetic seal 150 .

Also, since the reinforcing steel bar 130 is exposed to the road surface, the sealing seal 150 can be effectively protected. Since the reinforcing steel bar 130 has a rectangular parallelepiped shape, the reinforcing steel rod 130 can be installed while being inserted into the space between both side plates more quickly.

The present invention relates to a method for removing a mono-cell type expansion joint device together with a post-concrete joint by a construction in which only a part of both upper and lower ends of a stretch joint material are removed by a cutting machine and the remaining part is removed by a worker 1A and 1B, the method of separating the mono-cell fixing holder 20 and the mono-cell 10 from the mono-cell fixing holder 20 is different from the method of separately manufacturing the mono-cell fixing holder 20 and the mono-cell fixing holder 10, Lt; / RTI >

At this time, it is preferable that the after-concrete 300 where the cracks are generated around the mono-cell having the integral type requiring the repair is finished using the penetrated adhesive.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Monocell type expansion joint
110: side plate 120: stretch joint
130: reinforcing steel rod 150: sealing seal
160: sealing material 200; Bottom plate
300: Futta concrete

Claims (4)

(a) Except for both upper ends of the expansion joint 120, which are in contact with the after-concrete 300 by using a cutting machine, the after-concrete 300 formed around the mono-cell expansion joint 100 is not broken, The upper end A of the expansion joint material 120 is cut vertically downward in accordance with the inner side face B1 so that the upper center portion of the expansion joint material is cut and the expansion joint material 120 attached to the inner side surfaces of both side plates is cut from both side plates So that the upper part is separated;
(b) The upper end 120b of the expansion joint 120, which is in contact with the after-concrete 300, is further removed by removing the lower end 120a of the cut expansion joint 120, Exposing the space S;
(c) installing and fixing the reinforcing steel bars 130 on the upper surfaces of the both side plates 110 in the extending direction of the both side plates 110; And
(d) inserting a sealing seal (150) in the form of a rectangular parallelepiped in between the inner side (B1) of both side plates (110) using an adhesive. The method according to claim 1,
Between step (c) and step (d)
Further comprising closing a space (S) occupied by both upper ends of the expansion joint material (120) with a sealing material (160). 3. The method according to claim 1 or 2,
The upper surface of the hermetic seal 150 in the step (c) is formed lower than the upper surface of the reinforcing steel bar 130 so that the hermetic seal and the foreign matter can be discharged in the lateral direction of the bridge through the upper part of the hermetic seal 150 So that the reinforcing steel bar (130) is exposed to the road surface. 3. The method according to claim 1 or 2,
After the step (d), the after-concrete 300 having cracks generated around the mono-cell type expansion joint apparatus requiring repair is finely finished using an adhesive penetrated by cracks. Way.
KR1020150157695A 2015-11-10 2015-11-10 Reparing method of mono-cell joint apparatus using steel bar KR20170054926A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150157695A KR20170054926A (en) 2015-11-10 2015-11-10 Reparing method of mono-cell joint apparatus using steel bar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150157695A KR20170054926A (en) 2015-11-10 2015-11-10 Reparing method of mono-cell joint apparatus using steel bar

Publications (1)

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KR20170054926A true KR20170054926A (en) 2017-05-18

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