JP2010150849A - Structure for mounting gutter in joint portion of road bridge - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure for mounting a gutter, in which a drainage gutter made of a component material with rubber elasticity is provided between side plates facing each other in a girder joint gap of an expansion device for a road bridge, for enabling to mount the drainage gutter on the opposed portions of the side plates after the side plates are fixed. <P>SOLUTION: The gutter comprises protruding pieces which protrude to the outside of right and left side edges, respectively, and a knob piece which protrudes along the longitudinal direction to the outside of the gutter between the protruding pieces. A distance between the right and left protruding pieces is set as wide as or wider than the distance between the side plates. Also, retainer portions for locking the protruding pieces are provided respectively on the opposed sides of the side plates, and the protruding piece is locked to the retainer portion by pulling down the gutter with the knob piece after pushing the gutter between the side plates from below. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

TECHNICAL FIELD The present invention relates to a mounting structure for a ridge that spans a drainage basin made of a constituent material having rubber elasticity between side plates facing each other between girders of a telescopic device for a road bridge.

In general, this type of drainage basin is attached to a side plate formed integrally with comb teeth of an expansion / contraction device arranged between girders. In Patent Document 1, the lower end portion outside the side plate facing in the play ( A mounting structure is disclosed in which both side ends of the eaves are bolted to the road girder side, and the side plate is positioned and fixed in the joint recess in that state, and then embedded in the recess as it is.

However, in this mounting structure, when installing the telescopic device in the joint recess, a flexible drainage basin must be installed on the site across the lower parts of both side plates that are independent of each other. There is an inconvenience that cannot be done quickly.
In addition, the road has a gentle downward slope of about 1 ° toward the side groove so that rainwater can flow smoothly into the side groove even on a flat road surface. Will be. However, in the place where drainage between the girders of the road cannot flow down to the side edge side of the road due to the drainage channel, the slope must be reversed, so there is also the inconvenience that this drainage basin mounting structure cannot be adopted is there.
Japanese Patent No. 30216558

The present invention provides a structure for attaching a drainage basin made of a material having rubber elasticity between side plates facing each other between the girders of a telescopic device for a road bridge. It is an object to be able to attach a drainage basin.

The technical means for solving this technical problem comprises (a) a protruding piece that the ridge protrudes outside the left and right side edges, and a knob piece that protrudes in the longitudinal direction between them. The width between the projecting pieces is formed to be larger than the distance between the side plates, and (c) a receiving portion for locking the projecting pieces is provided on the opposite side of the side plate, and After pushing in, the pick piece is used to lower the heel so that the protruding piece can be locked to the receiving portion.

A heel formed of a constituent material having rubber elasticity can bend the left and right side edges inward using the rubber elasticity. By bending in this way, a restoring elastic force is exerted on both side edges to open outward.
Since the width between the protruding pieces of the heel is formed to be larger than the distance between the side plates, the left and right side edges of the heel are bent inward so that they face the lower part of the girder, and the heel is pushed up as it is The ridges are lifted in this state by the protruding pieces projecting to the outside of the left and right side edges by the restoring elastic force pressing the side plates. Since a receiving portion for fixing the protruding piece is provided on the opposite side of the side plate, the protruding piece moves outward again after passing through the receiving portion and faces the receiving portion.

On the outside of the heel, there is a knob piece protruding along the longitudinal direction between the left and right protruding pieces.If you hold this and pull down the heel, the protruding piece will be processed toward the receiving part without fail. The hook is received and the hook is locked to the receiving portion while pressing the side plate from the lateral direction.
Therefore, the drainage can be attached to the facing portion even after the side plate of the telescopic device is fixed between the girders.

Natural rubber, chloroprene-based synthetic rubber, styrene / butadiene-based synthetic rubber, and the like can be suitably used as the constituent material having rubber elasticity that forms the ridge.
In addition to being formed into a U-shaped cross-section or V-shape in order to receive drainage from the beginning, the ridge may be formed into a sheet shape or a belt shape and bent into the above-mentioned shape at the time of construction.

The protruding piece and the picking piece can be formed at the same time as the ridge is formed, and these forms are designed corresponding to the fixing structure described later.
For the knob, considering the length of the heel, the bent shape, flexibility, etc., only one strip is provided outside the central portion, or one strip at the left and right of the central portion or near the base end of the protruding piece. Whether to provide the bulging portion at the tip end of the knob or the like is also appropriately selected.

The receiving portion provided on the side plate is provided by engraving a groove over the entire length of the surface of the side plate in consideration of the inclination angle of the flange or by protruding the receiving portions at a predetermined interval on the surface of the side plate. In the case of using the latter protruding type receiving part, it is desirable that the upper part of the projecting piece or the lower part of the receiving part is formed by an inclined surface so that the rising wrinkles can be smoothly exceeded.

When the protruding piece and the receiving portion are locked using an adhesive, both can be fixed and integrated. It is desirable that the form of the contact surfaces of both be designed so that the adhesive function can be sufficiently exerted.
Further, even if a so-called concave / convex fitting structure in which the tip of the protruding piece is bent downward and a concave portion is formed on the upper surface of the receiving portion and the bent tip portion of the protruding piece is inserted into the concave portion is adopted, both of them are integrated. Can be fixed.
If an adhesive is interposed on the concave / convex fitting surface, the fixing effect between the two can be further enhanced.
The amount of rainwater flowing between the bridges of the road bridge is much less than that flowing into the ditch, so there is no heavy weight on the ridge. Therefore, since most of the load applied to the fixing portion of the heel is the weight of the heel itself, as long as the heel is supported by the receiving portion, the locking structure between the protruding piece and the receiving portion is not limited.

As a result of attaching the drainage basin to the facing part of the side plate, there is an advantage that the drainage basin can be attached from the lower side of the side plate using the joint between the side plates after being fixed.
Also, even when rainwater that flows down to the side of the ditch side has to be directed to the median strip side, the dredging resists the descent toward the ditch side. By arranging the receiving portion so as to have a gradient, water can be introduced with a reverse gradient, so that there is an advantage that it can be handled without changing the dimensional design of the joint recess.

FIG. 1 is a sectional view of a girder gap 1 of a road bridge, and FIG. 2 is an enlarged view of a main part thereof.
The state which attaches the expansion-contraction apparatus 10 to the joint recessed part 5 and 5 formed of the floor slabs 2 and 2 which face in the gap 1 and the pavement layers 3 and 3 on it is shown.
The side plates 12 and 12 that support the comb teeth 11 and 11 constituting the expansion and contraction device 10 are concrete anchors 13 and 13, anchor bars 14 and 14 in which the lower portions are embedded in the left and right floor slabs 2 and 2, reinforcement bars 15 and 15, respectively. Are fixed to the end surfaces of the floor slabs 2 and 2 in a face-to-face manner.
A backup material 17 is positioned below the comb teeth 11, and a sealing material 16 is filled between the comb teeth 11 and the backup material 17.

In this embodiment, the flange 20 extending between the side plates 12 and 12 facing the gap 1 is formed of a chloroprene-based synthetic rubber, and the left and right side edges 21 and 21 project over the entire length. As shown in FIG. 3, the width between 22 and 22 is formed to be larger than the interval between the side plates 12 and 12, and both end edges are bent inward during use.
The flange 20 is attached under the back-up material 17, and metal protrusions 24, 24 as receiving portions are provided outside the side plates 12, 12. The protrusions 24 and 24 are fixed by welding at intervals of about 50 cm in parallel with the lower edges of the side plates 12 and 12, and adhesives 25 and 25 are applied to the surfaces thereof.

The heel 20 bends the side edges 21 and 21 inward, faces the play 1 from below the side plates 12 and 12, and is pushed upward in this state, but the upper surfaces 23 and 23 of the side edges of the heel are illustrated. The projecting piece 22 uses the slanted surface to get over the protrusions 24 and 24 and face it.
Next, when the picking piece 26 protruding outside the heel is gripped and the heel 20 is pulled downward, the lower surface of the protruding piece 22 is polymerized on the protrusion 24 coated with the adhesive 25, and both are bonded. It will be.
Reference numeral 27 denotes a sealing material for sealing between the flange 20 and the side plate 12.

Cross section between girder of road bridge Enlarged view of the main section between girders Front view of a kite

Explanation of symbols

1 girder play, 2 floor slabs, 3 road paving layers, 5 joint recesses, 10 expansion and contraction devices, 11 comb teeth, 12 side plates, 13 concrete anchors, 14 anchor bars, 15 reinforcing bars, 16 sealing material under the comb teeth, 17 Back-up material, 20 drainage basin, 21 樋 both ends, 22 突出 projecting piece, 23 projecting piece upper inclined surface, 24 projection as projection, 25 adhesive, 26 knob, 27 シ ー sealing material

Claims (3)

In a mounting structure of a ridge that spans a drainage basin made of a rubber-constituting material between side plates facing between the girders of a telescopic device for a road bridge, the ridge projects out of the left and right side edges; In the meantime, it is provided with a picking piece projecting in the longitudinal direction on the outer side, the width between both projecting pieces is formed to be larger than the interval between the side plates, and a receiving part for locking the projecting piece on the opposite side of the side plate A mounting structure for the scissors, which is provided and the scissors are pushed into the side plate from below and then the scissors are used to pull down the scissors so that the protruding pieces can be locked to the receiving portions. The hook mounting structure according to claim 1, wherein the protruding piece and the receiving portion are locked with an adhesive. The scissor attachment structure according to claim 1 or 2, wherein the protruding piece and the receiving portion are locked by uneven fitting.

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