JPS63138006A - Trough of bridge expansion joint part - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a gutter used in a bridge expansion joint such as a long bridge, and more specifically, the gutter material of the gutter is made of a highly flexible elastic sheet such as rubber. The present invention relates to the gutter, which is made of a gutter material, and in which the side wall of the gutter is formed continuously and integrally with the gutter material without adhering a separate member.

(Conventional technology) In recent years, with the remarkable progress in bridge construction technology, large-scale bridge construction works such as today's bridge are being carried out in various places, but especially for long bridges with a length of over 1000 m. Generally, a large relative displacement of up to 2,000 m in the bridge axis direction occurs between bridges and abutments or at the joints between bridges, so a special large-scale link-type expansion joint device is inserted here to absorb the displacement and The road surface on the bridge is continuous two-dimensionally, allowing vehicles to run stably.

That is, the link type telescoping device described above, as shown in FIG.
The lateral 'IL (3), which is connected to the end of the bridge (1), (1)' via a universal joint (2),
(3)' four-bar linkage mechanism (4), (4)'
A large number of comb-shaped fingers (5), (5)' horizontally protruding from each cross beam (3), (3)' along the bridge axis direction (x) are connected to each other so as to be movable in parallel through the cross beams (3), (3)'. The fingers are slidably assembled and their free ends are movably placed on the upper surface of an intermediate cross beam (6) horizontally supported between the four-bar link mechanisms (4) and (4)'. (:5), (5)' are always held horizontally while absorbing the amount of displacement of the bridge connection part. (Refer to Japanese Patent Publication No. 52-32173) Furthermore, in the link type expansion joint device described above, the gap (7) between the fingers (5) and (5)' from the road surface
In order to collect and discharge rainwater, dirt, etc. that have flowed into the bridge, a horizontally long gutter perpendicular to the bridge axis direction (X) is installed in the space between the cross beams (3), (3)' and the intermediate cross beam (6). It is arranged.

By the way, as a gutter attached to a conventional link type expansion joint device, for example, as shown in FIG.
A flat water guide plate (9) is installed on the front and rear walls of 1.

(9)' are hinged by hinges (10), (10)', and the front and rear ends of the water guide plates (9), (9)' are connected to the transverse beams (3), (3)' and the intermediate transverse beam (6). ) through hinges (11) and (11)',
The hinges (10), (10)', (11), (11
)' while absorbing the displacement length in the bridge axis (X) direction, the gap (7) between the fingers (5) and (5)'
) to guide the rainwater, soil, etc. that fall from
)' and a gutter member (8), and the water is drained through a vertical gutter (not shown) connected to the gutter member (8).

(Problems to be Solved by the Invention) However, with the metal gutter as described above, the gutter resonates due to vibrations caused by running vehicles, etc., causing noise, and when trying to increase the amount of expansion and contraction in the bridge axis direction. The entire gutter becomes larger and larger installation requires space, and the gutter parts (
8) Because the cross-sectional area of the groove is small, there is a problem in that pebbles and the like tend to accumulate, which impairs the flow of rainwater.

In order to overcome this inconvenience, as a gutter for an expansion joint device, a rubber gutter used for elevated bridges with a relatively small amount of expansion and contraction, i.e., as shown in FIG. The entire gutter material α is made of a horizontally rectangular elastic sheet material such as chloroprene rubber or chloroprene rubber-covered cloth, and has a U-shaped cross section, and the same gutter material A bellows-shaped side wall (13) formed separately from a sheet of material
, (13)' are integrated by gluing or bolting (see Japanese Patent Application Laid-open No. 199905/1983), and the front and rear walls 00. It is also conceivable to increase the amount of expansion and contraction of the gutter and the groove volume by fixing the upper edges of α to the transverse beam and the intermediate transverse beam with poles)Q6).

However, in the rubber gutter described above, the side wall (13).

(13)' and the gutter material (2) are formed separately and then joined together, and the thickness of the joined part is larger than the other parts, which hinders the flexibility of this part. When a bridge expansion joint has a large amount of expansion and contraction, bending stress concentrates there, causing the joint to easily peel or crack, leading to the risk of water leakage, and there remains room for further improvement in this regard.

The present invention has been made by focusing on the problems that the conventional gutter used in the bridge expansion joint has. By eliminating the seam between the two, damage to the part is prevented, thereby solving the above-mentioned problem.

(Means for Solving the Problems) The structure of the present invention for achieving the above object will be explained with reference to FIGS. 1 and 2, which correspond to embodiments.

In the gutter of the present invention, at the expansion joint (22) between the bridges (21) and (21)', the fingers (39),
(39)' is a horizontally elongated gutter with a U-shaped cross section that is arranged substantially horizontally and perpendicular to the bridge axis (X), and the gutter material (41) forming the groove bottom is entirely made of rubber. The side wall (50) of the gutter material (41) is formed by folding and joining the end sides (47) of the gutter material (41). 41) is formed continuously and integrally.

(Function) In the gutter (40) having the above configuration, the groove width in the bridge axis direction changes due to the deflection of the gutter material (41), and the bridge axis (X) of the expansion joint (22) changes.
finger (39) while absorbing the displacement length in the direction.

(39)' Gutter material (41) catches rainwater and pebbles that fall from the gap, and as the expansion joint (22) moves, the gutter material (41)
When bending, the boundary between the bottom of the gutter material (41) and the side wall (50) is removed because the side wall (50) is formed continuously and integrally with the gutter material (41), and there is no stress concentration due to joints. This will greatly improve the durability of the gutter without causing any cracks or damage.

(Example) The gutter of the present invention will be described in detail below based on 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 same gutter, and Fig. 3 is a developed view showing an example of the gutter material constituting the gutter. It is.

In these figures, (21) and (21)' are bridges, and (22) is a link type expansion joint device interposed between the connecting ends of each bridge (21) and (21)'. The joint device (22) is connected to the bridge (21), (21)
universal join at the end of ) (23) , (
23)' and a convex curved part (24) on the lower surface.
, (24)' are placed on the shelf supports (25), (25)' provided at the ends of the bridge (21), (21)', and the pair of cross beams (26), (26) are supported at both ends. )' and the horizontal beams (26), (26)' - through fulcrum pins (27), (27)', the planting end is swingably connected, and the tip is formed into a V-shape by the connecting pin (28). main links (29) and (29)' connected to the main link (29).

(29)' One end is pin (30), (30
)', and the other end is connected to each other by a pin (31) in an inverted ■ shape (32), (32)
', and the horizontal beams (26), (26) are connected by pins (31) at the connecting parts of the sub-links (32), (32)'.
An intermediate cross beam (33) supported in parallel with ', and a pin (28) that hangs vertically downward from the end of the intermediate cross beam (33) and whose lower end connects the main links (29) and (29)'.
A vertical support bar (36) is slidably inserted into a vertical hole (35) of a collar (34) coaxially provided with a vertical support bar (36), and a finger pin is provided on the top surface of each of the cross beams (26) and (26)'. A pair of combs whose base ends are swingably supported via (37) and (37)', and which are placed on the free end side or on a sole plate (38) provided on the upper surface of the intermediate cross beam (33). shaped finger (39).

(39)'.

(40) is the finger (
39), (39)'The horizontal beam (26) below
, (26)' and the intermediate cross beam (33), the horizontally long gutter is arranged substantially horizontally and perpendicular to the bridge axis (X), and the line gutter (40) is made of chloroprene rubber sheet. Or gutter material (41
) and the front wall (42) and rear wall (43) of the cross beam (
26), (26)' and a hinge member (44) on the opposite surface of the intermediate cross beam (33).

(44)', was attached via a mounting plate (45) and bolts (46), and was curved into a ship bottom shape with a U-shaped side cross section. At the end of the wire gutter (40), the end side (47) of the gutter material (41) is formed into an obtuse ■-shaped development shape as shown in FIG. F attached to the outer surface
RP bottom plates (48), (48)' and bolts (
49) is formed by sandwiching the tip-shaped side wall (
50) are continuously integrated.

In addition, near the end of the gutter material (41), two cutout-shaped notches (51) and (51)' are formed symmetrically in the front and back, and these are attached to the FRP sealing plate on both the inside and outside surfaces. (52
).

(52)' and Pol) By closing with (53), the end bottom surface of the gutter material (41) is inclined upward and bending is prevented.

(54) is a reinforcing plate made of rigid resin attached to the bottom of the gutter material (41) along its longitudinal direction;
The drainage hole (55) drilled at one end of 54) has a downspout (54).
6) The upper ends of the wires are connected.

In addition, when a plurality of expansion joint devices (22) are arranged in parallel over the entire width of the connection part of the bridge (21), (21)', the above-mentioned gutter (40) is connected to the expansion joint devices (22) at both ends. )
A pair of shaft tip-shaped side walls (50) shown in FIG. However, by connecting these in series with each other by adhesive or other means, an elongated gutter having side walls (50) at both ends is formed. Furthermore, the joint portions of the side walls (50) at both ends of the gutter (40) are usually treated with waterproof sealing using an adhesive to increase the strength of the joint portions.

In the figure, (57) is an elastic plate (5B) made of a rectangular rubber plate with a thickness of about 500 mm, which is glued to the lower surface of the gutter (40) in order to impart the necessary restoring force to the gutter material (41). are the front and rear walls (42) of the gutter (40), (43) rubber reinforcing strips glued to the outer surface of the upper edge, (59) are the cross beams (26), (26)
' and a draining board that is inclined downwardly and protrudes like an eave from the side surface of the intermediate cross beam (33).

The gutter of the present invention has a ridged structure, and its function will be explained first.
(21) If the spacing between the connecting parts changes significantly due to vibrations or temperature differences between day and night, use the finger (39L (39)
The bridges (21) and (21)' slide relative to each other while remaining horizontal due to the action of the link mechanism, absorbing changes in length between the bridges (21) and (21), and allowing vehicles to run on the road surface.

At this time, the width (W) of the gutter (40) interposed between the cross beams (26), (26)' and the intermediate cross beam (33) in the bridge axis (X) direction changes due to the deflection of the groove bottom. , fingers (39), (39)' and collects rainwater and pebbles that fall from the gap between the fingers (39) and (39)', and drains it from the drainage hole (55) to the downspout (5).
6).

Further, when the longitudinal width (W) of the gutter (40) changes, the tip-shaped side walls (50) at both ends of the line gutter (40) incline inwardly or outwardly while changing the opening angle. As the width (匈) increases and the depth of the gutter becomes shallower, it leans slightly inward, so even if a large amount of rainwater flows into the gutter, it will not overflow outside.

In addition, if a large amount of pebbles or garbage accumulates in the gutter (40) and the flow of rainwater becomes poor, the front and rear walls (40) of the gutter (40)
2) or (43), one of them should be connected to the cross beam (26
).

(26)' or by removing it from 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 line gutter (40) has an edge (48) cut into a convex curved shape, as shown in the developed shape in FIG.
The end sides (48) are alternately folded inside and out at approximately equal intervals at multiple locations (5 locations in the illustrated example), and the folded portions (6
4) Seat plate made of synthetic resin or stainless steel (60)
, (60>' and Pol) A bellows-shaped side wall (50) is integrally formed by sandwiching and joining with (61). In addition, a tail wing-shaped support plate (62) is erected on the upper surface of the FRP reinforcing plate (54) attached to the bottom of the gutter material (41), and the upper end of the support plate (62) is connected. piece (6
3) is connected to the folded joint (64) at the center of the side wall by (63)'.

In the drawings, portions with the same reference numerals as in FIGS. 1 to 3 indicate the same members and portions, respectively.

The gutter (40) having the above configuration is attached to the expansion joint device (22) in the manner shown in FIG. The side wall (50) folded into a bellows shape is made of gutter material (41
) is formed continuously and integrally with the bottom of the support plate (62), so no local stress is applied and uniform flexibility is exhibited. This prevents it from falling in and out when it expands and contracts, and prevents rainwater from flowing out.

In each of the above embodiments, the case where the gutter is attached to a large link type expansion joint device used for a bridge with a large amount of expansion and contraction, such as a long bridge, has been described, but the scope of application of the gutter of the present invention is not limited to this. For example, it is not limited to expansion joints of expressway viaducts
Of course, it is also possible to apply this method to a joint portion which has a relatively small amount of expansion and contraction, such as the one shown in Japanese Pat.

(Effects of the Invention) As described above, the gutter of the present invention bends the gutter material of the gutter, which has a U-shaped side cross section and is arranged substantially horizontally and perpendicular to the bridge axis, under the fingers of the bridge expansion joint, like rubber. It is made of a horizontally rectangular elastic sheet material with high elasticity, and its side walls are formed continuously and integrally with the gutter material by folding and joining the ends of the gutter material, so that the bottom and side walls of the gutter material are There is no seam at the boundary between the sections, and even when the gutter groove width changes according to the displacement of the bridge expansion joint, no local bending stress is applied, so the life of the gutter is greatly extended. This has the excellent effect of increasing the interval between gutter replacements and making maintenance easier.

Moreover, according to the gutter of the present invention, there is no need to join the bellows part that makes up the side wall and the gutter material that makes up the groove bottom, unlike in conventional rubber gutters, making manufacturing easier. By reducing the weight of the side walls of the gutter, it can be expected that rainwater can be prevented from flowing out due to downward bending of the gutter end.

[Brief explanation of the drawing]

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 an enclosure, and Fig. 3
The figure 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 same gutter, and FIG. 6 is a link FIG. 7 is a side sectional view showing an example of a conventional metal gutter used in the expansion joint device, and FIG. 8 is a perspective view showing a conventional rubber gutter. (21) , (21>'...Bridge, (22)...
Expansion joint section (expansion joint device), (39) (39)'
...Finger, (40)...Gutter, (41)...Gutter material, (47)...Gutter material edge, (50)...Side wall, (X)...Bridge axis. Patent applicant: Sumitomo Metal Industries, Ltd. Figure 1 Figure 6 Figure 7 Procedural amendments stamped) June 17, 1985 Commissioner of the Patent Office Kuro 1) Mr. Akio, Indication of the case 2, Name of the invention Bridge Expansion joint gutter 3, relationship with the amended case Patent applicant address 5-15 Kitahama, Higashi-ku, Osaka Name (211) Sumitomo Metal Industries, Ltd. (1 idiot) Representative Yasuo Shingu 4, agent residence 3-9-10-6 Minamisenba, Minami-ku, Osaka, subject of amendment Detailed description of the invention in the specification and drawing 7, contents of amendment (1) r2000rnJ on page 2, line 12 of the specification
I corrected it to ``R2000 Dragon''. (2) On page 4, line 14 of the specification, the phrase "length flow of rainwater" is corrected to "flow of rainwater." (3) On page 9, line 13 of the specification tube, it is stated that “bottom plate (48)
, (48)′” is replaced by “Uita (48), (4
8) Correct it as 'j. (4) In the specification, page 10, lines 17-18, “(57)
(57) is to protect the gutter material (41) when it comes into contact with the link.'' . (5) r + A (40) on page 10, line 19 of the specification...
・” from Fig. 1 2nd “...reinforcement band, (59) is”
Delete up to. (6) In line 10 of page 12 of the specification and line 11 of the same page - 2, "edge (48) J" is corrected to "edge (47) J." (7) Figure 1 of the drawings, Figures 2 and 4 are corrected as shown in the attached sheet. 8. List of attached documents (1) Drawings (Figure 1, Figure 2, Figure 4111)...
1 copy each＼Complete N Figure 4

Claims (1)

[Scope of Claims] 1. A gutter having a U-shaped side cross section and arranged substantially horizontally and perpendicular to the bridge axis below the fingers of the bridge expansion joint,
The gutter material is made of a highly flexible horizontal rectangular elastic sheet material such as rubber, and the side walls are formed continuously and integrally with the gutter material by folding and joining the ends of the gutter material. A gutter at a bridge expansion joint. 2. The gutter according to claim 1, wherein the side wall is formed into a bow shape by folding and joining the end sides of the gutter material formed in a V-shape. 3. The gutter according to claim 1, wherein the gutter is formed into a bellows shape by folding and joining the end sides of the gutter material whose side walls are formed in a convexly curved shape inward and outward at a plurality of locations.