KR100957039B1 - Refraction-type expansion and construction joint apparatus for a bridge - Google Patents

Abstract

PURPOSE: A waterproof and earthquake-proof expansion joint for a bridge is provided to prevent foreign materials from flowing in by effectively absorbing vibration energy, and to extend the service life of a bridge by reducing noise. CONSTITUTION: A waterproof and earthquake-proof expansion joint(100) for a bridge comprises upper plates(10a), a pair of vertical plates(30b), a fixed plate(20), multiple anchors(50), and vibration absorbing pads. The vertical plate is fixed to the upper plate to be assembled and disassembled. The fixed plate prevents foreign materials from flowing into a space between the upper plates. The anchors are fixed to the vertical plate, and are embedded in the upper plates. The vibration absorbing pads are arranged between the anchors and vertical plates, and reduce the vibration.

Description

Waterproof seismic expansion joints for bridges {Refraction-type expansion and construction joint apparatus for a bridge}

The present invention relates to an expansion joint device for bridges, and more particularly, to double the pair of horizontal and vertical plates and the bonding force between the pair of bridge tops that are connected to each other with a gap therebetween, By providing a fixed plate having a function of preventing penetration and leakage and installing vibration absorbing pads on one side of the anchor and the vertical plate, it is possible to provide a waterproofing effect, vibration and noise damping effect, and obtain economical and convenience of use. It relates to expansion joints for bridges.

In general, bridge structures expand and contract in response to temperature changes and loads. Therefore, bridge structures constructed over a certain length are designed to have an appropriate connection gap between the bridge deck and the deck.

Expansion joints are installed in the connecting gap between the bridge decks, and the expansion joints prevent the damage of the bridge structure that expands and contracts according to the temperature change or the load so that the vehicle can run smoothly.

Korean Utility Model Registration No. 20-0187688 discloses a new expansion joint for bridges to enhance the expansion action and effectively prevent foreign matter from penetrating into the separation space.

6 is a perspective view of the utility model registration No. 20-0187688, Figure 7 is a view showing the installation state.

6 and 7, the expansion joint device 10 according to the prior art is a pair of main plate material 14, the main plate material 14 which is spaced apart from each other at predetermined intervals between the bridge top plate 12 A plurality of anchor portions 20 each extending laterally from the longitudinal direction and embedded in the bridge top plate 12, the first rubber members 33 respectively coupled to opposite inner wall surfaces of the main plate material 14, and each main plate material. And a second rubber member 40 provided at each end of each of the four ends 14. Here, the first and second rubber members 33 and 40 are provided between the vertical members 17 at predetermined intervals from the horizontal member 16, and are press-vulcanized to the main plate 14.

The main plate 14 has a horizontal member 16 disposed along the plate surface direction of the bridge top plate 12 and a vertical member 17 extending downward from the bottom plate surface of the horizontal member 16 and has a cross-sectional "T" shape. It is formed of an iron plate member to have. A plurality of anchor portions 20 protruding from the plate surface of the vertical member 17 and extending along the longitudinal direction of the bridge upper plate 12 and embedded in the bridge upper plate 12 are formed outside the vertical member 17. Each anchor portion 20 is formed of an iron plate member, the upper edge portion is formed with a plurality of reinforcing bar receiving portion 21 is cut down to accommodate the reinforcing bar (23). At this time, the anchor portion 20 may be installed in the form of a long rod from the plate surface of each vertical member (17). In some cases, one end of the anchor portion 20 may be configured to be in contact only with the plate surface of each vertical member 17.

Between the horizontal member 16 and the first rubber member 33 is installed a sealing member 50 is pressed in to prevent foreign matter from entering the separation space. Such a sealing member 50 can be configured simply by extrusion molding or press vulcanization of the rubber tube. The sealing member 50 held in close contact with the separation space not only blocks foreign matter from entering into the separation space but also facilitates the expansion and contraction of the expansion joint device 10.

By the way, the conventional expansion joint device for bridges having the above-described configuration is perpendicular to the main plate member 14, that is, the horizontal member 16 in a state that the impact or vibration transmitted when a vehicle and an earthquake that pass through the bridge are not effectively attenuated. Since it is transmitted from the member 17 to the anchor portion 20 as it is, it damages the fixed bearing force of the anchor portion 20 against the concrete placing portion G, and consequently, impairs the stability of the expansion joint device 10. do. In addition, the first rubber member 33 has a vertical portion (not shown) attached to the opposite side inner wall surface of both main plate material 14 and an upper horizontal portion (not shown) to connect both ends of the vertical portion, respectively, up and down. ) And the lower horizontal portion (not shown), the upper horizontal portion is formed with a "W" cross-sectional wrinkles and the lower horizontal portion is formed with a gently curved wrinkles upwards, the structure is complicated and difficult to install When the rubber member 33 is damaged, it is very inconvenient to replace.

As a result, the conventional expansion joint device for bridges of the above-described structure can not effectively prevent the accident of breakdown and collapse of the bridge due to the increase and the earthquake of the vehicle, and the structure of the waterproof rubber member is complicated, so that the convenience and economy in manufacturing and use none.

Therefore, the necessity of the development of the expansion joint device for the bridge not only effectively absorbs and damps vibration energy during the bridge behavior but also improves the ease of use of the rubber waterproof member.

The present invention has been made in order to solve the above problems and problems, the technical problem to be solved of the present invention is that foreign matter penetrates or rain water leaks through the space between the upper plate of the expansion joint installed on the bridge top plate In addition to preventing and effectively absorbing and damping vibration energy, the present invention provides a waterproof seismic expansion joint device for bridges with improved convenience and economy.

In order to achieve the above object, the present invention,

An expansion joint device for bridges installed at predetermined intervals between the top and top of the bridge,

A pair of upper plates installed at predetermined intervals between the upper plate and the upper plate;

A pair of vertical plates disposed below the upper plate and fastened to the upper plate so as to be disassembled and assembled;

A fixing plate disposed between the upper plate and the vertical plate to double the coupling force and prevent infiltration or leakage of foreign matter through the separation space between the upper plates;

A plurality of anchors fastened and fixed to one side of the vertical plate, each embedded in the upper plate, and shaped to easily receive and retain reinforcing bars; And

It is disposed between the anchor and one side of the vertical plate, and provides a bridge expansion apparatus including a; vibration absorbing pad for damping vibration.

The fixing plate is made of a rubber material and includes a vertical member disposed at both ends in the longitudinal direction and a horizontal member extending between the vertical members.

Both ends of the horizontal member are integrally vulcanized on one surface of the vertical member disposed to face each other.

The horizontal member is composed of a pair of wing parts spaced apart from each other and the "double oil (W)" shaped bent portion disposed between the wings.

Both ends of the bent portion are vulcanized in contact with the inner ends of the wing portions facing each other, whereby the wing portion and the bent portion are integrally coupled.

Preferably, both ends of the horizontal member are located below the top of the vertical member.

The anchor is composed of a plate-shaped upright fixing part having a constant thickness and an extension part extending in a transverse direction from one surface of the upright fixing part, the vibration absorbing pad between the upright fixing part of the anchor and the outer surface of the vertical plate Is placed.

In the expansion joint device for bridges of the present invention as described above, by placing a fixed plate of rubber material between the upper plate and the vertical plate to double the bonding force and at the same time penetrate foreign matter through the separation space between the upper plate. I can prevent leaks. Therefore, a separate drainage system is unnecessary, and minimization of foreign matter inflow between the clearances of the top plate does not require separate maintenance.

In addition, by applying a vibration absorbing pad between the upright fixing part of the anchor and the outer surface of the vertical plate, it is possible to effectively absorb and attenuate the vibration energy generated during the horizontal displacement of the bridge due to the vibration of the earthquake, etc. It has the effect of extending the life.

In addition, the coupling structure between the top plate, the stationary plate and the vertical plate is simple and easy to install and assemble, thereby improving economy and convenience of use.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the waterproof seismic expansion joint for the bridge according to an embodiment of the present invention.

1 and 2 show the overall configuration of the waterproof seismic expansion joint device 100 for a bridge according to an embodiment of the present invention.

1 and 2, the waterproof seismic expansion joint 100 for a bridge according to the present invention, between a pair of bridge top plate P1 (see Fig. 3) and the top plate P2 (see Fig. 3) connected to each other A pair of upper plates 10 and 10a installed at predetermined intervals in the fixing plate 20 and the lower surface of the fixing plate 20 disposed so as to contact the bottom surfaces of the upper plates 10 and 10a. A pair of vertical plates 30a and 30b arranged in a "c" shape steel, that is, a plurality of anchors 50 respectively disposed on one side of the vertical plates 30a and 30b. do.

First, wavy sides and valleys are formed on one side of the upper plates 10 and 10a to correspond to each other. The upper plates 10 and 10a are arranged to be spaced apart from each other by the interval S (see FIG. 3) to offset the horizontal displacement of the bridge. A plurality of first bolt fastening holes 11 penetrate the upper plates 10 and 10a, respectively.

4 and 5 show the fixing plate 20 of the waterproof seismic expansion joint for the bridge shown in FIG.

4 and 5, the fixing plate 20 extends horizontally between the vertical members 21 and the vertical members 21 having a “T” shape disposed at both ends in the longitudinal direction of the fixing plate 20. And a member 22. Both ends of the horizontal member 22 are vulcanized and integrally bonded on one surface of the vertical member 21 disposed to face each other. Preferably, the fixing plate 20 is made of a rubber material. The fixed plate 20 is integrally formed with the vertical member 21 and the horizontal member 22, and thus is not easily provided with separate connecting parts, thereby making it easy to maintain.

The fixing plate 20 doubles the coupling force between the upper plates 10 and 10a and the vertical plates 30a and 30b and prevents foreign matters including rainwater from entering the space between the upper plates 10 and 10a. It also performs the function. To this end, both ends of the horizontal member 22 are vulcanized and bonded to be positioned below the top end of the vertical member 21. Since the height of the vertical member 21 is higher than the horizontal member 22, it is possible to effectively prevent leakage of rain water.

The horizontal member 22 is composed of a pair of wings 23a and 23b spaced apart from each other and a bent portion 24 having a "W" shape disposed between the wings 23a and 23b. A plurality of second bolt fastening holes 12 penetrate the wing portions 23a and 23b. The second bolt fastening holes 12 are formed at the same interval as that of the first bolt fastening holes 11 formed in the upper plates 10 and 10a. Both ends of the bent portion 24 are vulcanized in contact with the inner ends of the wing portions 23a and 23b facing each other. In this way, the wing portions 23a and 23b and the bent portion 24 are integrally combined to form the horizontal member 22.

1, 2, and 3, a plurality of third bolt fastening holes 13 penetrate through upper portions of the pair of vertical plates 30a and 30b. The third bolt fastening hole 13 is the first bolt fastening hole 11 formed in the upper plate (10, 10a) and the second bolt fastening hole (12) formed in the wings (23a, 23b) of the fixing plate 20 It is formed at the same interval as the interval of.

With the pair of top plates 10 and 10a and the fixed plate 20 and the pair of vertical plates 30a and 30b vertically aligned, they are the first bolt fastening holes of the top plates 10 and 10a. 11), integrally fastened by the first fastening bolt 21 which sequentially passes through the second bolt fastening hole 12 of the fixing plate 20 and the third bolt fastening hole 13 of the vertical plates 30a and 30b. It is fixed. Lower portions of the pair of vertical plates 30a and 30b are integrally embedded in the bridge top plates P1 and P2, respectively. A plurality of fourth bolt fastening holes 14 penetrate through the vertical plates 30a and 30b.

On the other hand, the anchor 50 is composed of a plate-shaped upright fixing portion 51 having a constant thickness and an extension portion 52 extending by a predetermined length in the transverse direction from one surface of the upright fixing portion 51. The anchor 50 is shaped to hold and secure the rebars. In detail, in the extension portion 52 of the anchor 50, the reinforcing bar placement hole 54 is formed in the upper region inclined toward the bottom.

The upright fixing part 51 and the extension part 52 of the anchor 50 are integrally formed, and a plurality of sixth bolt fastening holes 16 penetrate through the upright fixing part 51. The vibration absorbing pad 40 is disposed between the upright fixing portion 51 of the anchor 50 and the outer surfaces of the vertical plates 30a and 30b. The vibration absorbing pad 40 is for damping the vibration applied to the upper plate and the side plate steel of the expansion joint device 100 for the bridge. A plurality of fifth bolt fastening holes 15 penetrate the vibration absorbing pad 40. The fifth bolt fastening hole 15 is formed to correspond to the sixth bolt fastening hole 14 formed in the upright fixing part 51 of the anchor 50.

A plurality of second fastening bolts 36 are provided in the upright height of the fourth bolt fastening hole 14 of the vertical plates 30a and 30b, the fifth bolt fastening hole 15 of the vibration absorbing pad 40, and the anchor 50. As the second fastening nut 33 is fastened in the state exposed through the sixth bolt fastening hole 16 of the government 51, the anchor 50 and the vibration absorbing pad 40 are vertical plates 30a,. It is fixedly mounted on the outer surface of 30b).

Referring to the installation process of the bridge expansion and contraction apparatus 100 of the present invention having the structure as described above are as follows.

First, the vertical plates 30a and 30b are continuously disposed between the upper plate P1 and the upper plate P2 of the bridge, and the upper plates 10a and 10b, the fixed plate 20 and the vertical plates 30a and 30b are disposed. In the state of being aligned vertically, the first bolt fastening hole 11 of the upper plate (10a, 10b), the second bolt fastening hole 12 of the fixing plate 20 and the first plate 30a, 30b The upper plate 10a, 10b, the fixing plate 20, and the vertical plate 30a, 30b by screwing the first fastening bolt 21a and the first fastening nut 21b which pass through the 3 bolt fastening hole 13 ) Is integrally fixed.

Then, after separately positioning the anchor 50 and the vibration absorbing pad 40 on the side of the vertical plate (30a, 30b), the fourth bolt fastening hole 14 of the vertical plate (30a, 30b), vibration absorption The second fastening bolt 36 and the second fastening nut 36 passing through the fifth bolt fastening hole 15 of the pad 40 and the sixth bolt fastening hole 16 of the upright fixing part 51 of the anchor 50 ( By screwing 33, the anchor 50 and the vibration absorbing pad 40 are fixedly mounted on the outer surface of the vertical plates 30a and 30b integrally.

Then, after inserting the reinforcing bar into the rebar placement hole 54 formed in the anchor 50, the concrete is placed so that the anchor 50 is embedded, their installation is completed.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention described in the claims below. It will be appreciated.

1 is an exploded perspective view of a waterproof seismic expansion joint for a bridge according to a preferred embodiment of the present invention;

Figure 2 is a perspective view of the bonded state of the waterproof seismic expansion joint for the bridge shown in Figure 1;

3 is a cross-sectional view of the waterproof seismic expansion joint for the bridge shown in FIG.

4 is a perspective view of a fixing plate of the waterproof seismic expansion joint for the bridge shown in FIG.

FIG. 5 is a view of inverting the fixing plate shown in FIG. 4; FIG.

Figure 6 is an exploded perspective view of the expansion joint device for a bridge according to the prior art; And

7 is a cross-sectional view of the installation state of the expansion joint device for a bridge shown in FIG.

<Description of the symbols for the main parts of the drawings>

100: expansion joint for bridge

10a, 10b: horizontal plate 20: fixed plate

21: vertical member 22: horizontal member

23a, 23b: wing 24: bend

30a, 30b: vertical plate 40: vibration absorbing pad

50: anchor 51: upright fixing part

52: extension part P1, P2: top plate

Claims (6)

As the expansion joint device for bridges (100) provided at predetermined intervals between the upper plate (P1) and the upper plate (P2) of the bridge, A pair of upper plates 10a and 10b installed at a predetermined interval between the upper plate P1 and the upper plate P2; A pair of vertical plates 30a and 30b disposed below the upper plates 10a and 10b and fastened to the upper plates 10a and 10a so as to be disassembled and assembled; It is disposed between the upper plate (10a, 10b) and the vertical plate (30a, 30b) to double the coupling force and prevent the infiltration or leakage of foreign matter through the space (S) between the upper plate (10a, 10b) Fixing plate 20 for, including a vertical member 21 and a horizontal member 22 extending between the vertical members 21 disposed at both ends in the longitudinal direction of the fixing plate 20, the horizontal Both ends of the member 22 are vulcanized and bonded integrally on one surface of the vertical member 21 disposed to face each other, and the horizontal member 22 is a pair of wings 23a and 23b spaced apart from each other and the It consists of a bent portion 24 having a "double oil (W)" shape disposed between the wings (23a, 23b), both ends of the bent portion 24 is the inner end of the wings (23a, 23b) facing each other Vulcanized in contact with whereby the wings 23a, 23b and the bend 24 are integrally coupled, Plate 20; A plurality of anchors 50 fastened and fixed to one side surface of the vertical plates 30a and 30b, each embedded in the top plates 10a and 10b, and shaped to easily receive and retain reinforcing bars; And And a vibration absorbing pad (40) disposed between one side of the anchor (50) and the vertical plates (30a, 30b) to damp vibrations. delete delete The expansion joint device for a bridge according to claim 1, wherein both ends of the horizontal member (22) are positioned below the uppermost end of the vertical member (21). According to claim 1, The anchor 50 is a plate-shaped upright fixing portion 51 having a predetermined thickness and an extension portion 52 extending by a predetermined length in the transverse direction on one surface of the upright fixing portion 51 And the vibration absorbing pad (40) disposed between the upright fixing portion (51) of the anchor (50) and the outer surface of the vertical plates (30a, 30b). The expansion joint device for a bridge according to any one of claims 1, 4 and 5, wherein the fixing plate (20) is made of a rubber material.

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