JPH0756124B2 - Gutter of bridge expansion joint - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a gutter used for a bridge expansion joint such as a long bridge, and more specifically, an elastic sheet such as rubber having a high flexibility for a gutter material of a gutter. The present invention relates to the above-mentioned gutter which is made of a material and whose side wall is continuously and integrally formed with the gutter material without adhering another member.

(Conventional technology) In recent years, with the remarkable progress of bridge construction technology, large-scale bridge construction is being promoted in various places including Honshi Bridge, especially for long bridges with a bridge length of over 1000 m. , In general, maximum for bridges and abutments or connections between bridges
Since a large relative displacement in the direction of the bridge axis of up to 2000 mm occurs, a special large link expansion joint device is installed here to absorb the displacement, and the road surface on the bridge is made continuous in a plane. It enables stable driving.

That is, the link type expansion / contraction device described above, as shown in FIG.
Cross beams (3) and (3) 'connected to the ends of the bridges (1) and (1)' via universal joints (2) are connected to each other via four-bar linkages (4) and (4) '. A number of comb-shaped fingers (5), (5) 'that are horizontally projected from each cross beam (3), (3)' along the bridge axis direction (X) are slidable while being connected to each other so that they can move in parallel with each other. And the free end side thereof is connected to the four-bar linkage (4),
(4) 'is movably placed on the upper surface of the intermediate cross beam (6) which is horizontally supported in the middle, so that the fingers (5) and (5)' are always held horizontally and the bridge connecting part It is configured to absorb the amount of displacement. (Japanese Patent Publication Sho52−
In addition, in the above-mentioned link type expansion joint device, since rainwater, earth and sand, etc. flowing into the gap (7) between the fingers (5) and (5) ′ from the road surface are collected and discharged, A horizontally long gutter orthogonal to the bridge axis direction (X) is arranged in the space between the horizontal beams (3) and (3) 'and the intermediate horizontal beam (6).

By the way, as a gutter attached to a conventional link type expansion joint device, for example, as shown in FIG. 7, flat plates are formed on the front and rear walls of a gutter material (8) formed by bending a corrosion-resistant steel plate such as stainless steel into a U-shaped cross section. Type water guide plates (9), (9) 'are hinged by hinges (10), (10)', and the front and rear ends of the water guide plates (9), (9) 'are cross beams (3), ( 3) ′
And hinged to the intermediate cross beam (6) via hinges (11), (11) ', and the hinges (10), (10)', (1
Guide plates for rainwater, earth and sand, etc. falling from the gap (7) between the fingers (5) and (5) 'while absorbing the displacement length in the bridge axis (X) direction by the action of 1) and (11)'. (9),
(9) ′ and the gutter member (8) receive the gutter member (8).
It has a structure that drains water through a vertical gutter (not shown) connected to.

(Problems to be solved by the invention) However, in the metal gutter as described above, when the gutter resonates due to the vibration of the vehicle traveling or the like, noise is generated, and when the expansion and contraction amount in the bridge axis direction is increased. There is a problem that the entire gutter becomes large and requires a larger installation space, and the groove cross-sectional area of the gutter member (8) is small, so that small stones are easily accumulated and the flow of rainwater is deteriorated.

In order to overcome such inconvenience, as a gutter for expansion joint devices, a rubber gutter used for viaducts having a relatively small expansion / contraction amount, that is, a gutter arranged orthogonal to the bridge shaft as shown in FIG. The entire material (12) is made of a horizontally rectangular elastic sheet material such as chloroprene rubber or chloroprene rubber cloth and has a U-shaped cross section, and the gutter material (12) is provided at both ends of the gutter material (12).
A bellows-shaped side wall (1
3) and (13) 'are joined or integrated by bonding or bolting (see Japanese Patent Laid-Open No. 59-199905), and the front and rear walls (14) and (15) of the gutter material (12) are applied. It is also conceivable to fix the upper edge to the horizontal beam and the intermediate horizontal beam with bolts (16) to increase the expansion and contraction amount of the gutter and increase the groove volume.

However, in the above rubber trough, the side walls (13), (1
3) ′ and the gutter (12) are formed separately and then joined together. The thickness of the joined part is larger than other parts and the flexibility of this part is obstructed. When the expansion / contraction amount of the expansion joint portion is large, bending stress concentrates there, and peeling or cracking of the joint portion is likely to occur, which may cause water leakage, and there is room for further improvement in this respect.

The present invention was made by paying attention to the problems that the gutter used for such a conventional bridge expansion joint part had, and formed the side wall of the gutter end part continuously and integrally with the gutter material forming the groove bottom part. By eliminating the seam between the two, it is possible to prevent damage to the portion and thus solve the above-mentioned problems.

(Means for Solving Problems) A configuration of the present invention for achieving the above object will be described with reference to FIGS. 1 and 2 corresponding to the embodiment.

The gutter of the present invention is, in the expansion joint part (22) between the bridges (21) and (21) ', arranged substantially horizontally below the fingers (39) and (39)', orthogonal to the bridge axis (X). A horizontally long gutter having a U-shaped cross section, which is provided, and which forms a groove bottom surface (41)
Is formed by a flexible rectangular elastic sheet material, such as rubber, which is rich in flexibility, and its side wall (50) folds and joins the end side (47) of the gutter material (41). The gutter material (41) is continuously and integrally formed.

(Operation) The gutter (40) having the above-described configuration absorbs the displacement length of the expansion joint part (22) in the bridge axis (X) direction by changing the groove width in the bridge axis direction due to the bending of the gutter material (41). , Fingers (39), (39) ′
The rainwater and pebbles falling from the gap between the gutters are received, and when the gutter (41) bends due to the displacement of the expansion joint (22), its side wall (50) is continuous with the gutter (41). Since it is integrally formed and has no seams and no stress concentration, cracks and damages do not occur at the boundary between the bottom of the gutter (41) and the side wall (50), and the durability of the gutter is greatly improved. Become.

(Example) A gutter of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an example of the gutter of the present invention, FIG. 2 is a side sectional view of an expansion joint device for a bridge using the gutter, and FIG. 3 is a development view showing an example of a gutter material forming the gutter. Is.

In these figures, (21) and (21) 'are bridges,
(22) is a link type expansion joint device interposed between the connecting ends of the bridges (21), (21) '.
2) is connected to the ends of the bridges (21) and (21) 'through universal joints (23) and (23)', and the convex curved portions (24) and (24) 'on the lower surface are connected to the bridges (21) and (21)'. (21), (2
1) 'A pair of horizontal beams (26), (26)' mounted on shelf receiving parts (25), (25) 'and supported at both ends, and the horizontal beams (26), (26) Main links (29) and (29) 'whose base ends are swingably connected to ′ through fulcrum pins (27) and (27) ′ and whose ends are connected in a V shape by a connecting pin (28). And one end of the main link (29), (29) 'has a pin (3
0), (30) ', and the other end is a pin (31)
Secondary links (32) connected to each other in an inverted V shape by
(32) 'and an intermediate cross beam (33) supported in parallel with the cross beams (26), (26)' by a pin (31) at a connecting portion of the sub links (32), (32) ', It hangs vertically downward from the end of the intermediate cross beam (33), and the lower end thereof is the main links (29), (2
9) ′ connecting pin (28) with a collar (3
The vertical support bar (36) slidably inserted in the vertical hole (35) of 4) and the finger pins (37), (37) 'on the upper surfaces of the horizontal beams (26), (26)', respectively. A pair of comb-shaped fingers (39), (39) whose base end is swingably supported via a sole plate and whose free end side is placed on a sole plate (38) provided on the upper surface of the intermediate cross beam (33). ′ And.

(40) is a finger (3) of the expansion joint device (22).
9), (39) 'The horizontal beams (26), (26)' below
A horizontally long gutter which is arranged substantially horizontally in the space between the intermediate cross beam (33) and the bridge axis (X), and the gutter (40) is
A front wall (42) and a rear wall (43) of a trough material (41) composed of a horizontally rectangular elastic sheet material such as a chloroprene rubber sheet or a chloroprene rubber cloth which has excellent weather resistance and is highly flexible. Are attached to the facing surfaces of the transverse beams (26), (26) 'and the intermediate transverse beam (33) via hinge members (44), (44)', a mounting plate (45) and a bolt (46), respectively, and a side section U
The gutter (40) is curved in the shape of a ship bottom, and the gutter (40) has two ends with the end side (47) of the gutter (41) formed into an obtuse V-shaped expanded shape as shown in FIG. Fold it in to the edge (4
7) is provided integrally with a corrugated side wall (50) formed by sandwiching it with bolts (49) together with FRP contact plates (48) and (48) 'which are attached to the outer surface. .

In addition, wedge-shaped notches (51), (51) 'are symmetrically formed at two positions in the front and rear in the vicinity of the end of the gutter (41), and the FRP sealing plate is attached to both the inner and outer surfaces. (52), (52) ′
Also, the bottom surface of the end portion of the gutter member (41) is tilted upward by closing the gutter member (41) with the bolt (53) to prevent bending.

(54) is a reinforcing plate made of synthetic resin, which is attached to the bottom of the gutter material (41) along the longitudinal direction thereof, and the reinforcing plate (54)
An upper end of the down gutter (56) is connected to a drain hole (55) formed at one end of the down stream.

The gutter (40) is provided with expansion joint devices (22) at both ends when the expansion joint devices (22) are arranged in parallel over the entire width of the connecting portion of the bridges (21) and (21) ′. A pair of those having the bow-shaped side wall (50) shown in FIG.
Moreover, the intermediate expansion joint device (22) uses a horizontal rectangular intermediate gutter material of the same material and the same width, and has side walls (50) at both ends by connecting them in series by means such as bonding. It is formed as an elongated gutter. The joints of the side walls (50) on both ends of the gutter (40) are usually waterproofed with an adhesive to increase the strength of the joints.

In the figure, (57) is 5 mm that is adhered to the lower surface of the gutter (40) to protect the gutter (41) when the gutter (41) contacts the link.
An elastic plate made of a rectangular rubber plate having a certain thickness, and (58) is a draining plate projecting in an eaves-like shape inclined downward from the side surfaces of the horizontal beams (26), (26) 'and the intermediate horizontal beam (33). .

The gutter of the present invention has the above-mentioned structure. Next, its operation will be described. First, the bridge (21), (2
When the distance between the connecting parts changes significantly due to the shaking of 1) ', the temperature difference between day and night, etc., the fingers (39), (39)' slide relative to each other while keeping horizontal due to the action of the link mechanism, and the bridge (21 ), (21) 'absorbs the change in length and enables the vehicle to run on the road.

At this time, the horizontal beams (26), (26) 'and the intermediate horizontal beam (33)
The width (W) in the bridge axis (X) direction of the gutter (40) interposed between the gutters (40) changes due to the bending of the groove bottom, and the fingers (39),
Rainwater and pebbles that fall from the gap between (39) 'are collected and discharged from the drain hole (55) through the downspout (56).

When the front-rear width (W) of the gutter (40) changes, the bow-shaped side walls (50) at both ends of the gutter (40) incline inward or outward while changing the opening angle. As (W) increases and the depth of the gutter becomes shallower, it leans inwardly,
Even if a large amount of rainwater flows into the gutter, it will not overflow outside.

If a large amount of pebbles or dust accumulate in the gutter (40) and the flow of rainwater becomes poor, the front and rear walls (42) of the gutter (40),
If any one of the (43) is removed from the cross beams (26), (26) 'or the intermediate cross beam (33), it can be easily discharged.

FIG. 4 shows another embodiment of the gutter according to the present invention.
The gutter material (41) constituting the gutter (40) has a side edge (47) cut into a convex curved shape as shown in a developed shape in FIG. 5, and the side edge (47) is formed at a plurality of locations (illustrated example). (5 locations) are alternately folded inside and outside at approximately equal intervals, and the folds (64) are sandwiched and joined by synthetic resin or stainless steel seat plates (60), (60) 'and bolts (61). Thus, the bellows-shaped side wall (50) is integrally formed. The gutter (41)
The tail plate-shaped support plate (62) is erected on the upper surface of the FRP-made reinforcing plate (54) attached to the bottom part of the connecting plate (63), (63). ) ′ Is connected to the pleated fold joint (64) at the center of the side wall.

In the figure, the parts denoted by the same reference numerals as those in FIGS. 1 to 3 indicate the same members and the same parts, respectively.

The gutter (40) having the above structure is attached to the expansion joint device (22) in the manner as shown in FIG. 2, and the groove width in the bridge axial direction is changed by the bending deformation of the gutter member (41). Since the side wall (50) folded in a bellows shape is formed continuously and integrally with the bottom part of the gutter material (41), no local stress acts on the side wall (50) and uniform flexibility is exhibited, and the central part Since the pleated portion (64) is connected to the upper end of the support plate (62), it does not fall inside or outside during expansion and contraction, and rainwater is prevented from flowing out.

In each of the above-mentioned embodiments, the case where the gutter is attached to a large-sized link type expansion joint device used for a bridge having a large expansion and contraction amount such as a long bridge is explained, but the application range of the gutter of the present invention is not limited to this. The present invention is not limited to the above, and it is of course possible to apply the present invention to a joint portion having a relatively small amount of expansion and contraction, such as an expansion joint portion of a highway viaduct (see Japanese Utility Model Publication No. 51-20196).

(Effect of the invention) As described above, in the gutter of the present invention, a gutter member having a U-shaped side cross section, which is arranged substantially horizontally and orthogonal to the bridge axis, is flexed like a rubber under the fingers of the bridge expansion joint. Since it is formed of an elastic sheet material having a wide rectangular shape with excellent properties, and the side wall is formed integrally with the gutter material by folding and joining the end sides thereof, the bottom part and the side wall of the gutter material. There is no seam at the boundary with the part, and even when the groove width of the gutter changes according to the displacement of the bridge expansion joint part, since the local bending stress does not act, the life of the gutter is greatly extended, It has an excellent effect that the replacement interval of the gutter becomes longer and the maintenance becomes easier.

Moreover, according to the gutter of the present invention, even at the time of manufacturing, it is not necessary to join the bellows part forming the side wall and the gutter material forming the groove bottom like a conventional rubber gutter, and the manufacturing is facilitated, and By reducing the weight of the side wall of the gutter, it can be expected that rainwater can be prevented from flowing out due to the downward bending of the gutter end.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a gutter according to the present invention, FIG. 2 is a side sectional view of a link type expansion joint device using the gutter, and FIG.
FIG. 4 is a developed plan view of the gutter material constituting the gutter, FIG. 4 is a perspective view showing another embodiment of the gutter of the present invention, FIG. 5 is a developed plan view of the gutter material of the gutter, and FIG. 6 is a link. FIG. 7 is a perspective view of a conventional expansion joint device, FIG. 7 is a side sectional view showing an example of a conventional metal gutter used in the expansion joint, and FIG. 8 is a perspective view showing a conventional rubber gutter. (21), (21) '…… Bridge, (22) …… Expansion joint part (expansion joint device), (39) (39) ′ …… Finger, (40) …… Gutter, (41) …… Gutter Lumber, (47) …… gutter edge, (50) …… Sidewall, (X) …… Bridge axle.

Continued Front Page (72) Inventor Akira Yamada 38-1-804 Senriokaue, Suita City, Osaka Prefecture

Claims (3)

[Claims] 1. A gutter having a U-shaped side cross section, which is arranged substantially horizontally and orthogonal to the bridge axis below the fingers of the bridge expansion joint part, wherein the gutter is made of a flexible material such as rubber. A gutter of a bridge expansion joint part, characterized in that it is made of a rich horizontal rectangular elastic sheet material, and its side wall is continuously and integrally formed with the gutter material by folding and joining the end sides of the gutter material. 2. The gutter according to claim 1, wherein the side wall is formed in a bow shape by folding and joining edges of a gutter material formed in a V shape. 3. The gutter according to claim 1, which is formed in a bellows shape by folding and joining the end sides of the gutter material whose side walls are formed in a convex curve inward and outward at a plurality of locations.