KR20150084181A

KR20150084181A - an expansion joint of a bridge

Info

Publication number: KR20150084181A
Application number: KR1020140003920A
Authority: KR
Inventors: 이용희
Original assignee: 주용산업주식회사
Priority date: 2014-01-13
Filing date: 2014-01-13
Publication date: 2015-07-22

Abstract

The present invention relates to an expansion joint. Provided is an expansion joint installed in a gap between slabs supported by struts and arranged in horizontal on a top surface of piers forming a bridge, wherein expansion joint spaces (140, 160) corresponding to the top surfaces of respective corresponding ends of the slabs (100, 100a) formed by a gap (120) is formed; a slide plate (200), which includes one end fastened on the top surface of one (1400) of the expansion joint spaces by an anchor bolt (300) and the other end covering the gap (120) and superposed on the other expansion joint space (160) of the other slab (100a), is formed; a male expansion member (400), the top surface of which forms the same plane with the top surface of the slab (100), is fixated on the top surface of the other end of the slide plate (200); a female expansion member (500), which corresponds to the male expansion member (400) and forms the same plane with the top surface of the slab (100a), is fixated on the top surface of the expansion joint space (160) of the other slab (100a); and a fill member (600), which forms the same plane with the top surfaces of the slabs (100, 100a), fills the expansion joint spaces (140, 160). The expansion joint of the present invention significantly reduces and absorbs noises resulting from traveling cars by minimizing the gap in an expansion joint section, thereby remarkably reducing noises on the road.

Description

An expansion joint of a bridge

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a telescopic joint device for a bridge, in which a telescopic joint between a slab and a slab constituting an upper plate of a bridge accommodates expansion and contraction of the slab, The joints are installed not at the oil level but at a position spaced a certain distance from the stream. The elasticity of the material constituting the expansion and contraction part makes the structural stability by the stable supporting force, minimization of the disturbance of the oil well, To a telescopic joint.

Generally, a slab constituting an upper structure of a bridge is composed of a plurality of slabs to accommodate expansion and contraction, a proper gap is formed between the slabs and the slab, and a structure for expanding and contracting Respectively.

The above-mentioned expansion joint is provided to cope with the expansion and contraction of the slab when the expansion and contraction of the slab constituting the bridge occurs in the longitudinal direction, and it corresponds to the expansion and contraction phenomenon caused by the structural change or seasonal change of the bridge top plate .

Conventionally, there are a rail type and a finger type as typical ones.

The rail-type expansion joint device is a rail structure in which openings on both sides in the longitudinal direction are opened and openings are formed on one side of the width direction in the longitudinal direction, and the bridge type slabs are symmetrically arranged on one side of the two bridge slabs A pair of fixed frames each embedded and installed; And the lower end of the both side portions is inserted into the pair of fixed frames through the openings to be hooked on the lower side edge of the opening portion, .

Therefore, the bridge between the rail and the rail will control the amount of extension of the bridge when the bridge is stretched.

The finger type expansion joint is also referred to as a finger joint, which comprises a finger plate having a plurality of fingers corresponding to each other at corresponding ends of a bridge slab and being positioned in a pair of left and right, A base angle formed by bending the bottom surface of the slope and having a vertical portion and a horizontal portion, a bolt and a nut for fitting and fixing the finger plate to the base angle, and a base angle forming a corresponding end of the slab, And an anchor embedding part coupled through a filler material to maintain the anchor embedding part.

Accordingly, the fingers of the finger plate are shaped to be coupled to each other when the elasticity is applied to the bridge, and the elasticity is corresponding to the elasticity.

However, in the case of the rail-type or finger-type expansion joint device described above, when the width between the slab and the slab is set to be wide, there is a problem that the impact force is greatly exerted when the vehicle moves.

That is, in the case of a traveling vehicle, there is a problem that a vehicle shake occurs largely due to an impact force generated by oil, and in the case of a slab, there is a problem that a fastening portion is easily loosened due to repeated impact load, and noise is generated.

On the other hand, conventionally, a construction for installing a telescopic joint for bridges using a mounting plate is disclosed in Patent Registration No. 0862276.

This is provided to prevent settlement of the ground layer at both ends of the slab of the bridge, and a separate seating plate is provided at both ends of the slab so that the installation position of the expansion joint is changed.

However, in the above case, it is possible to install the slab at both ends of the slab only at a portion where the slab is supposed to be supported. However, there is a problem in that the sinking prevention effect can be obtained.

[Reference 1] Registered Utility Model No. 20-0453460 registered in Korea May 09, 2011 Announcement [Reference 2] Korean Patent Registration No. 0862276 October 09, 2008 Announcement

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,

SUMMARY OF THE INVENTION [0006]

The bridge between the slab and the slab and the expansion joint for the expansion and contraction of the slab are installed at different positions, so that the load due to the running of the vehicle can be prevented from being generated in the slant, thereby improving the durability of the bridge, And to prevent the noise problem and the slab damage by minimizing the vehicle impact force.

According to an aspect of the present invention,

The apparatus of claim 1, wherein the slab is formed of a slab, and the slab is slidably supported by the slab. Respectively, so as to correspond to each other; A slide plate having one end fixed to an upper surface of one of the expansion joint spaces through an anchor bolt and the other end covering an upper surface of the expansion joint space of the other slab; An upper surface of the other end of the slide plate is fixed with a male type stretchable material having the same plane as the upper surface of the slab; Fixing a female type stretchable material corresponding to the male type stretchable material on the upper surface of the expansion joint space of another slab and maintaining the same plane as the slab; And a filling material is filled in the expansion joint space to maintain the same plane as the upper surface of the slab.

Here, the metal plate may be provided on the upper surface of the expansion joint space of the slab where the other end bottom surface of the slide plate is closely contacted, so that the slide plate slides face-to-face.

In addition, drainage grooves communicating with the oil can be formed in the expansion joint space in which both ends of the metal plate are lifted.

The metal expansion and contraction member and the male expansion and contraction member are respectively coupled to a metal plate for durability inside or outside so that wedge-shaped protrusions and wedge-shaped grooves are formed on corresponding surfaces of the female expansion- And a coupling groove is formed on the wall of the groove and the protrusion, respectively, and both ends of the elastic sheet are inserted and fixed to the coupling groove.

Further, a sound absorbing material for absorbing noises may be coupled between the female type and the male type stretchable material.

In addition, it is preferable that a spring is provided to elastically press the slide plate to the anchor bolt, and the spring is covered with the protective cap.

The present invention has the effect of significantly increasing the durability of the bridge due to the fact that the load due to vehicle running is not generated in the bridges since the stretch joint section is provided at a position deviated from the slag between the slab and the slab constituting the bridge top plate, The noise due to the vehicle driving is remarkably reduced and the noise is absorbed even when the noise is generated, so that the road noise is greatly reduced.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a lumbar incision in a state in which a telescopic joint device according to the present invention is installed on a bridge;
Fig. 2 is an exploded perspective view of Fig. 1,
FIG. 3 is a side sectional view of FIG. 1 and FIG. 2,
4 is an enlarged sectional view of the main part of Fig. 3,
Fig. 5 is a front sectional view of Fig. 1 and Fig. 2,
FIG. 6 is a cross-sectional view showing another embodiment of FIG. 3; FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may obscure the subject matter of the present invention. do.

The present invention relates to an expansion joint device provided between a slab and a slab supported by a support at a top of a bridge pier forming a bridge and having a joint section at a position spaced a certain distance from the slab, To a telescopic joint.

The present invention relates to a slab 100, a slab 100, a slab 100, a slab 100, and a slope 120 formed between the slabs 100 and 100a, An expansion joint space 140 formed on the upper surface of the corresponding end portion of the slabs 100a and 100a centering on the slope 120 and an upper surface of the expansion joint space 140 An anchor bolt 300 for fixing one end of the slide plate 200 to one of the slabs 100, an upper surface of the other end of the slide plate 200, A female type male and male type extensible material 400 coupled to ends of the slab 100a and accommodating the slabs 100a and 100a during expansion and contraction thereof, A filling material 600 filling the empty space of the expansion joint spaces 140 and 160 to form the slabs 100a and 100a It is configured to hereinafter.

The expansion joint spaces 140 and 160 are formed at the ends of the slabs 100 and 100a by removal for installing expansion joints or when the initial slabs 100 and 100a are formed.

The slide plate 200 is mounted on the flow field 120 with a metallic material so as to cover and cover the flow field 120. One end of the slide plate 200 is inserted into one of the expansion joints 140 of the expansion joints 140, And is fixed to the upper surface with an anchor bolt 300. And the other end is raised on the upper surface of the expansion joint space 160 of the other slabs 100a while covering the flow field 120. [ That is, when the slabs 100 and 100a are stretched or shrunk, the slide plate 200 rubs against the upper surface of the expansion joint space 160 and is slid.

That is, in the installation, a plurality of anchor bolts 300 are fixed on the upper surface of the expansion joint space 140 along the width direction of the bridge, and one end of the slide plate 200 is coupled to the anchor bolts 300 The spring 320 and the nut 310 may be fastened to each other and then covered with the protective cap 340.

The female and male extensible members 400 and 500 are preferably formed of a rubber material having elasticity which forms a joint section where the slab 100 and the slab 100a are connected to each other. In order to increase durability, A plurality of reinforcing plates 440 and 540 may be arranged, and a metallic material may further be coupled to the outer surface.

The female type stretchable material 400 is fixed to an expansion joint space 160 of the slab 100a through an anchor bolt as a fastener and has a wedge-shaped female groove 420 formed on one surface thereof.

That is, after a plurality of anchor bolts are arranged on the bottom surface of the expansion joint space 160, the female type stretchable material 400 is coupled through the anchor bolts through a nut tightening.

This is for separating and replacing only the female type stretchable material 400 when the female type stretchable material 400 is damaged.

The male type stretchable material 400 is fixed to the upper surface of the end portion of the slide plate 200 through an adhesive or a fastener and fixed so as to be spaced apart from the female type stretchable material 400, Shaped male protrusion 520 is protruded to be engaged with the female-type groove 420 of the female housing 400 with a space therebetween.

A sound absorbing material 800 is further provided between the female type male and male type extensible material 400 and between the female type groove 420 and the male type protrusion 520. The sound absorbing material 800 may be a sponge, And the sound absorbed through the gap is absorbed.

The filler material 600 is filled in the expansion joint spaces 140 and 160 so as to be flush with the upper surface of the slabs 100 and 100a. In other words, the slabs 100 and 100a are filled in portions except for the female and male extensible members 400 and 500, respectively.

The metal plate 260 is provided on the upper surface of the expansion joint space 160 of the slab 100a to which the other end bottom surface of the slide plate 200 is closely attached.

The bottom surface of the slide plate 200 is slid while being in surface contact with the upper surface of the metal plate 260 when the expansion and contraction of the slab 100 or 100a occurs.

A drainage groove 180 communicating with the flow field 120 is formed at both edges of the expansion joint space 160 on which the metal plate 260 is mounted so that water flows through the drainage groove 180, (120), and a drain pipe is formed in the flow path (120) as is known in the art to move moisture outside the bridge.

The anchor bolt 300 is for fixing the slide plate 200 to the upper surface of the expansion joint space 140. The anchor bolt 300 is provided with a spring 320 to support the nut 310, The spring 320 elastically presses the slide plate 200 to be fixed. At this time, the spring 320 is covered with the protection cap 340 so as to be protected from the filling material 600.

Reference numeral 302 denotes a fixing bolt having a lower end fixed to the upper surface of the slide plate 200 and a threaded portion formed at an upper end thereof to hold the male extensible 500 in a fixed state on the slide plate 200 when the nut is fixed do.

Reference numeral 303 denotes an anchor bolt for fixing the female type stretchable member 400 to the upper surface of the expansion joint space 160 of the slab 100a.

The lower end of the anchor bolt 300a is fixed to the expansion joint space 160 and the upper end of the anchor bolt 300a passes through the elongated hole 280 of the slide plate 200 to be inserted into the slab 100 And is integrally fixed. That is, the end of the slab 100 is fixed to the expansion joint space 160 of the other slab 100a, and it is possible to expand and contract through the elongated hole 280 formed in the slide plate 200.

6 shows another example according to the present invention in which wedge-shaped male protrusions 520 and wedge-shaped female grooves 420 are formed on corresponding surfaces of the female type stretchable member 400 and the male type stretchable member 500 And the engagement grooves 422 and 522 may be formed on the wall surfaces of the male protrusion 520 and the arm groove 420. The elastic grooves 422 and 522 may be formed in the elastic sheet 700 Are inserted and fixed.

The elastic sheet 700 has elasticity as an elastic material and covers the clearance between the female and male extensible members 400 and 500.

It is preferable that the reinforcing plates 440 and 540 are vertically arranged at equal intervals on the inner side of the female and male extensible material 400 and 500.

The installation state of the expansion joint device according to the present invention constructed as described above will now be described.

1 and 5, the upper surface of the corresponding end of the slab 100 and the slab 100a is cut off around the slug 120 between the slab 100 and the slab 100a, And joint spaces 140 and 160, respectively. The metal plate 260 is fixed to the one expansion joint space 160 and one end of the slide plate 200 is fixed to the other expansion joint space 140 with the anchor bolts 300. At this time, the slide plate 200 may be mounted on the upper surface of the metal plate 260 so as to cover the flow path 120 and slide. Thereafter, the male extensible material 500 is fixed to the upper end surface of the slide plate 200 and the female extensible material 400 is fixed to the expansion joint space 160, The elastic member 520 is fixed so as to be positioned in the female groove 420 of the female type stretchable member 400 and successively fixed to the gap between the female type stretchable member 400 and the male type elastic member 500. Then, when the empty space of the expansion joint spaces 140 and 160 is filled with the filler 600 such as Ascon having the same surface as the upper surface of the slabs 100 and 100a, the installation of the expansion joint device is completed.

Thereafter, a frictional force is generated in the slide plate 200 and the metal plate 260 when a displacement force is generated in accordance with a temperature change in the bridge. At this time, a friction force is generated in the space between the female type stretchable material 400 and the male type stretchable material 500 The stretching action is absorbed.

Meanwhile, when the vehicle or the like continuously passes through the stretching / joining section, a vibration force is generated. At this time, the vibration force is absorbed by the female and male extensible members 400 and 500 made of a rubber material, The driving stability is ensured and the noise is reduced.

When rainwater or the like is introduced, rainwater passes through the space between the female and male extensible materials 400 and 500 and flows into both drainage grooves 180 around the metal plate 260 as shown in FIG. And is drained to the outside of the bridge through the drainage path provided in the flow path 120, the water flooding phenomenon is not generated, and the water can be moved to the outside of the road through the stretchable sheet 700. Thus, do.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. It is obvious to those who have knowledge of. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

100, 100a: slab 120:
140,160: Expansion joint space 180: Drain groove
200: slide plate 260: metal plate
300: anchor bolt 310: nut
320: spring 340: protective cap
400: female type stretch material 420: female type groove
422: coupling groove 440: reinforcing plate
480: Fastener
500: male type elastic member 520: male type projection
522: coupling groove 540: reinforcing plate
600: Filler
700: Elastic sheet
800: Sound absorbing material

Claims

The present invention relates to an expansion joint device which is installed between an upper slab and a lower slab,
The expansion joint spaces 140 and 160 are formed so as to correspond to the upper surfaces of the corresponding ends of the slabs 100 and the slabs 100a on which the slope 120 is formed;
One end of the expansion joint is fixed to the upper surface of the expansion joint space 140 through the anchor bolts 300 and the other end covers the upper end of the expansion joint 120 and the upper surface of the expansion joint space 160 of the other slab 100a And a slide plate 200 to be lifted up;
The top surface of the other end of the slide plate 200 is coplanar with the top surface of the slab 100, and protrusions and grooves are continuously formed along the width direction of the bridge when viewed in plan from one end, Fixing a male type extensible material 500 of a finger type having a male type projection 520;
The upper surface of the other slab 100a corresponds to the male extensible material 500 on the upper surface of the expansion joint space 160 and the upper surface of the slab 100a is flush with the slab 100a, Fixing the female type extensible material 400 in which the female type grooves 420 are formed such that the projections 520 are inserted and positioned in a spaced apart relationship;
Wherein the filler material (600) is filled in the expansion joint spaces (140) (160) so as to be flush with the upper surface of the slabs (100) and (100a).

The method according to claim 1,
And a metal plate (260) is provided on an upper surface of the expansion joint space (160) of the slab (100a) to which the other end bottom surface of the slide plate (200) .

3. The method of claim 2,
And a drain groove (180) communicating with the flow path (120) is formed in the expansion joint space (160) where both ends of the metal plate (260) are lifted.

The method according to claim 1,
The female type stretchable material 400 and the male type stretchable material 500 are made to have the reinforcing plates 440 and 540 for durability coupled to each other inside or outside,
The elastic grooves 420 and 422 are formed in the male protrusions 520 and the male grooves 420 so that both ends of the elastic sheet 700 are fixed to the engaging grooves 422 and 522 It is characterized by expansion joint.

The method according to claim 1,
And a sound absorbing material (800) for absorbing noises is coupled between the female type male and male type extensible material (400) (500).

The method according to claim 1,
Wherein a spring (320) is provided to elastically press the slide plate (200) to the anchor bolt (300), and the spring (320) is covered with a protective cap (340).