JP4827612B2 - Stretched gap covering structure for wall rail - Google Patents

Description

  The present invention relates to a stretchable gap covering structure for a wall rail of a bridge such as a railway bridge or a road bridge.

The wall rails are provided with expansion / contraction gaps corresponding to the expansion / contraction gaps of the bridge floor slab, and adapt to expansion and contraction of the wall rails due to temperature changes. A protective tube for a cable for communication or the like is embedded in the wall rails over the entire length, and the cable penetrates the protective tube. Since this cable is exposed to the air through a telescopic gap in the railing and exposed to wind and rain, measures are taken to prevent it. Furthermore, it is also proposed to provide a cover to cover the stretchable space of the wall rail (Japanese Patent Laid-Open No. 2003-1).
94271).
JP 2003-194271 A

  The cover disclosed in Japanese Patent Application Laid-Open No. 2003-194271 is expressed as “lid member 14” in the description of paragraph 0026 of the publication. “Furthermore, since the connecting member 6 is disposed in the buffer portion 13 of the bridge and is exposed to the outside air, the lid can close the upper surface opening and the left and right side openings of the buffer portion 13. By attaching the member 14 to the outside of the buffer portion 13, it is possible to better prevent the deterioration of the connecting member 6 and consequently the bellows tube 3. The “lid member (cover) 14” is indicated by an imaginary line in FIGS.

The “lid member (cover) 14” shown here is merely “attached to the outside of the buffer portion 13”, and no specific attachment method is disclosed. As the cover of the wall railing expansion / contraction gap used under severe conditions exposed to wind and rain in the open air, the maximum measures should be taken for its maintenance, but there is no technical disclosure about it, There is no suggestion.
In the present invention, when covering the expansion / contraction gap of the wall rail under such severe conditions with the cover plate, it is intensively studied what kind of configuration the covering structure can cope with when the cover plate is damaged or deteriorated. And it was completed.

Stretching gap covering structure walls railings that written in the present invention, the opposite walls railings across the expansion gap, the inner surface for part of the shape along the top edge of the surface and the wall railing facing the pavement in the wall railing And a cover plate formed in a shape along the contour of the cross-sectional shape of the wall rail covering the expansion gap. The cover plate is fixed to one wall rail of the wall rail, and the lower side of the lowermost cable passing through the wall rail is separated from the cable at a distance from the cable in the expansion gap. The inner surface portion and the outer surface portion are connected by a preventing tool .

The inner surface portion and the outer surface portion are connected to each other by a drop-off preventing device that crosses the lower side of the cable passing through the wall rail at a distance from the cable in the expansion gap. May be .

The drop-off prevention device is composed of a fixture and a linking tool, the fixture is attached to at least one of the inner surface portion and the outer surface portion, and the linking tool has one end on which the fixture is not attached. It may be attached to the part for use or the part for external face and the other end may be releasably engaged with the fixture .

The drop-off prevention tool is composed of a fixture and a linkage, and the fixtures are attached to the inner surface portion and the outer surface portion as a pair, and the linkage is connected to both fixtures so as to be released. Also good .

The fixture has an engaging portion at one end, and the other end is fixed to the inner surface portion or the outer surface portion, and the connecting tool is non-returned at an end portion of the fixture that engages with the engaging portion. A hook with a nail may be provided .

A surface that is deeper than the thickness of the inner surface portion on the surface of the wall rail that is suitable for pavement and that allows the cover plate to move when the wall rail is expanded or contracted , and that is suitable for the pavement in the wall rail. A recess that is deeper than the thickness of the outer surface portion and that allows the cover plate to move when the wall rail is extended or contracted is formed on the back surface of the inner surface, and the inner surface portion and the outer surface portion may be fitted into the recess. .

According to Shin contraction gap covering structure that written to the present invention, the opposite walls railings across the expansion gap, the molded cover plate to conform to the cross-sectional shape of the wall railing, covering the stretch gap erection Since the cover plate is fixed to one wall rail of the wall height column, if the cover plate is installed on the opposite wall height columns on both sides of the expansion gap so as to cover the expansion gap, the inner surface of the cover plate is It is in close contact with the top, outer and inner surfaces of each wall rail, enabling stable deposition, and this cover plate is free to move relative to the other wall rail, so it is not affected by the expansion or contraction of the wall rail. .

  Further, since the cover plate is divided into an inner surface portion and an outer surface portion at the same level as the top end surface of the wall rail, the cover plate can be reduced in volume, and can be easily attached to the wall rail. Since the top surface is covered with the lower surface of the inner surface portion, rain water can flow down along the outer surface of the outer surface portion.

Further , the inner surface portion and the outer surface portion are connected by a drop-off prevention tool that crosses the lower side of the cable penetrating through the wall rail at a distance from the cable within the expansion gap. Therefore, even if the inner surface portion and the outer surface portion are about to fall off the wall rail due to impact force, vibration, wind pressure, or the like, the drop-out can be prevented by connecting with the other party, which is safe. Further, it is possible to prevent the cable from being damaged by the drop-off prevention tool when the position is shifted due to an impact force or the like.

Furthermore, the falling-off prevention device is constituted by a fitting interlocking member, the mounting member is attached to at least one for the inner surface portion and the outer surface for portion, attached one end of該連Tsunagigu is a mounting fixture if the other end with attached to no inner surface for part or the external surface for portion which has been engaged in a freely released on the mounting member, which facilitates handling.

Furthermore, the falling-off prevention device is constituted by a fitting interlocking member, the mounting member is attached to each other for the inner surface portion and the outer surface for part of a pair, releasably to interlocking the該連Tsunagigu is both fitting if so be that you can remove the interlocking member from the fixture, it does not become a hindrance hanging interlocking device during repair or replacement of the inner surface for portion and an outer surface for portion.

Furthermore, one end of the mounting member has an engaging portion, the other end is fixed to the portion for the inner surface for part or outer surface, end該連Tsunagigu engages the engaging portion of the mounting device Some is provided with the check claw hook, attached to interlocking member to the fixture with a check claw hook only engaged with the engagement portion, both engaged in by removing the usual hook as You can solve the problem.

Furthermore, deeper than the thickness of the inner surface for portion on the surface facing the pavement in the wall railing, a recess to allow the movement of the cover plate at the time of expansion and contraction of the wall railing, facing the pavement in wall railing Forming a recess that is deeper than the thickness of the outer surface portion on the back surface and permitting movement of the cover plate when the wall rail is expanded and contracted, and fitting the inner surface portion and the outer surface portion into the recess. if, will be the front surface of the cover plate at the surface facing the pavement in the wall railings are positioned on the front surface flush with the wall railings, thereby preventing projecting from the front surface of the wall railings to the pavement side . Accordingly, it is possible to prevent the vehicle surface from being thinly scraped off and remaining in the gap between the cover plate and the wall rail when an accident occurs in which the vehicle travels while rubbing the cover plate.

  FIG. 1 is a partially cut slant view showing a specific example of a stretchable gap covering structure of a first wall rail according to the present invention, and FIG. 2 is a view showing a section B of FIG. 1 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is a partially cut slant view showing a specific example of the stretchable gap covering structure of the second wall rail. Throughout the drawings, the same reference numerals denote the same or corresponding parts.

  Reference numerals 1 and 2 are bridge slabs, which are provided relative to each other with an expansion gap 3 in the direction of the bridge axis, and pavement layers 4 and 5 are provided on the respective surfaces. An expansion joint 6 is installed in the expansion gap 3 as usual. Reference numerals 7 and 8 denote wall height columns that stand from the side edges of the floor slabs 1 and 2, respectively, and an expansion / contraction gap 9 is provided corresponding to the expansion / contraction gap 3 between the floor slabs 1 and 2. A cover plate 10 is made of metal, plastic, or the like, and is formed to match the cross-sectional shape of the wall height columns 7 and 8. The cover plate 10 is installed on the wall height columns 7 and 8 so as to cover the expansion / contraction gap 9, and is fixed to one of the wall height columns 7 and 8, which is 7 in the illustrated example.

  The inner surface of the cover plate 10 is in close contact with the top end surfaces 11 and 12, the outer surfaces 13 and 14, and the inner surfaces 15 and 16 of the respective wall height columns 7 and 8, thereby enabling stable deposition. This cover plate 10 is relatively movable with respect to the other wall height column 8 and is not affected by the relative expansion and contraction of the wall height columns 7 and 8.

The cover plate 10 is divided into an inner surface portion 17 and an outer surface portion 18 on the same level surface as the top end surface 11 or 12 of the wall height column 7 or 8.
In this case, since the bulk of the cover plate 10 is reduced, it is easy to adhere to the wall rails 7 and 8, and the top surface 19 of the outer surface portion 18 is covered with the lower surface 20 of the inner surface portion 17, so that rainwater is used for the outer surface. It can flow down along the outer surface of the part 18.

A lower end of the outer surface portion 18 hangs downward from lower ends of the wall height columns 7 and 8 to form a draining portion 21.
In this case, since rainwater is dripped from the lower end of the draining part 21, it can prevent that rainwater wraps around the lower surface of the floor slabs 1 and 2, and corrosion of a reinforcing bar etc. can be prevented.

The inner surface portion 17 and the outer surface portion 18 are provided with a drop-off prevention device that crosses at least a lower side of the lowermost cable 22a of the cable 22 passing through the wall rails 7 and 8 within the expansion gap 9 at a distance from the cable 22a. 23 are connected.
In this case, even if the inner surface portion 17 or the outer surface portion 18 tries to drop off from the wall column 7 or 8 due to impact force, vibration, wind pressure, or the like, the drop-off can be prevented by connecting with the other party, which is safe. Further, it is possible to prevent the cables 22 and 22a from being damaged by the dropout prevention tool 23 when the position is shifted due to an impact force or the like.

The drop-off prevention tool 23 is composed of a fixture 24 and a connecting tool 25, and this fixture 24 is attached to at least one of the inner surface portion 17 and the outer surface portion 18, and one end of the connecting device 25 is attached to the fixture 24. It is attached to the inner surface portion 17 or the outer surface portion 18 that is not, and the other end is releasably engaged with the fixture 24.
In this case, the fixture 24 is attached to the inner surface portion 17 or the outer surface portion 18, and the connecting tool 25 is attached to the other side to which the fixture 24 is not attached, so that the handling becomes easy.

The drop-off prevention device 23 is composed of a fixture 24 and a connecting device 25, and the attachment tools 24 are individually attached to the inner surface portion 17 and the outer surface portion 18, and the connecting device 25 allows the two attachment tools 24 to be released. It is connected.
In this case, since the linking tool 25 can be removed from the mounting tool 24, the linking tool 25 does not hang when the inner surface portion 17 or the outer surface portion 18 is repaired or replaced.

The fixture 24 has an engaging portion 26 at one end, the other end is fixed to the inner surface portion 17 or the outer surface portion 18, and the connecting device 25 is opposite to the end portion that engages with the engaging portion 26 of the fixture 24. A hook 27 with a pawl is provided.
In this case, the connecting device 25 can be attached to the mounting device 24 simply by engaging the hook 27 with the engaging portion 26, and the hook 27 can be disengaged by removing the check pawl of the hook 27 as usual.

  The fixture 24 is composed of a pair of countersunk bolts 28 and 29 in a U-shape having a discontinuous part 30 as a whole, and counters the counters 31 and 32 at both ends and the counters 31 and 32 respectively. The inner surface portion 17 or the outer surface portion 18 is sandwiched by the nuts 33 and 34, and the connecting device 25 can be engaged with and disengaged from the mounting tool 24 through the discontinuous portion 30, and the discontinuous portion 30 is sandwiched therebetween. The discontinuous portion 30 is opened and closed by contact and separation of nuts 37 and 38 screwed into screws 35 and 36 formed on both side portions.

  In this case, since the surface of the countersunk bolts 28 and 29 does not protrude outward from the surface of the inner surface portion 17 or the outer surface portion 18, it is less likely to be damaged even if a vehicle or the like collides, and is removed by mischief. The attachment 24 is stably attached to the inner surface portion 17 and the outer surface portion 18, and the connecting device 25 is easily operated by operating the nuts 37 and 38 that are screwed to both side portions of the discontinuous portion 30. Detachable.

  The fixture 24 is configured by a pair of countersunk bolts 28 and 29 having a U-shape with a discontinuous part 30 as a whole, and counters the counters 31 and 32 at both ends and the counters 31 and 32 and nuts 33 respectively facing each other. And 34, at least one of the inner surface portion 17 and the outer surface portion 18 is sandwiched with the discontinuous portion 30 closed, and the connecting plate 25 is removed by removing the other flat bolt 29. Yes. Therefore, the other countersunk bolt 29 having a length that allows the discontinuous part 30 to be closed if the countersunk part 31 is installed in advance is used with respect to one countersunk bolt 28, and the nut 34 is used when the counters 31 are attached or detached. The bolt 29 is sufficiently fixed to the cover plate 10 so as not to rotate.

  In this case, the discontinuous part 30 is closed when the connecting tool 25 is engaged with one countersunk bolt 28 and the pair of countersunk bolts 28 and 29 are attached to the inner surface part 17 and the outer surface part 18. The discontinuous portion 30 does not need to be closed again and can be easily removed by removing the other countersunk bolt 29.

  The stretchable gap covering structure of the second wall rail according to the present invention is adapted to the thickness of the cover plate 10 on at least the inner surfaces 15 and 16 of the wall height columns 7 and 8 facing each other across the stretchable gap 9 and the wall height columns 7 and 8. Concave portions 39 and 40 that allow the movement of the cover plate 10 during expansion and contraction are formed. The cover plate 10 formed so as to conform to the cross-sectional shape of the recesses 39 and 40 of the wall height columns 7 and 8 is installed on the wall height columns 7 and 8 so as to cover the expansion / contraction gap 9 with the recesses 39 and 40. Then, the cover plate 10 is fixed to the other wall height column 7 by a fixture 41 such as a countersunk bolt, leaving a moving gap in one of the wall height columns 7 and 8, in the illustrated example, the recess 40.

  According to the stretchable gap covering structure of the second wall rail, in addition to the action and effect of the stretchable gap covering structure of the first wall rail, the surface of the cover plate 10 is placed on the wall height rails 7 and 8 inside the wall height columns 7 and 8. The surface of the vehicle is located in the same plane as the inner surfaces 15 and 16 of the vehicle and does not protrude inward, does not obstruct the passage, and if the vehicle runs while rubbing the cover plate, Thinly scraped off and can be prevented from remaining in the gap between the cover plate and the wall rail.

It is a partially cut slant view which shows the specific example of the expansion gap covering structure of the 1st wall rail concerning this invention. 1 is a cross-sectional view taken along the line AA in FIG. It is a modification of FIG. It is a partially cut slope view which shows the specific example of the expansion-contraction gap covering structure of the 2nd wall rail concerning this invention.

Explanation of symbols

7, 8 Wall height column 9 Stretching gap 10 Cover plate 12 Top end surface 17 Inner surface portion 18 Outer surface portion 22 Cable 23 Drop-off prevention tool 24 Mounting tool
25 Linkage 26 Engagement part 27 Hook 28, 29 Countersunk bolt 30 Discontinuous part 31, 32 Countersunk part 33, 34 Nut 35, 36 Screw 37, 38 Nut 39, 40 Recess

Claims (5)

On the opposite wall height column (7 , 8) across the expansion gap (9), the surface of the wall height column (7, 8) facing the pavement (4, 5) and the ceiling of the wall height column (7, 8). An inner surface portion (17) shaped along the end surface (12) and an outer surface portion (18) shaped along the back of the surface facing the pavement (4, 5) in the wall rail (7, 8). configured, wall railing a molded cover plate to the shape along the outline of the cross-sectional shape of (7,8) (10), bridged over the expansion gap (9), the cover plate (10) wall Secure to one wall height rail of the rail (7, 8), and place the lower side of the lowest cable (22a) of the cable (22) passing through the wall rail (7, 8) at a distance from the cable. An expansion gap covering structure for a wall rail , wherein the inner surface portion (17) and the outer surface portion (18) are connected by a drop-off prevention device (23) that crosses within the expansion / contraction gap (9) . The drop prevention tool (23) is composed of a fixture (24) and a coupling tool (25), and the fixture (24) is attached to at least one of the inner surface portion (17) and the outer surface portion (18). The connecting device (25) is attached to the inner surface portion (17) or the outer surface portion (18) where one end is not attached to the attachment device (24) and the other end is attached to the attachment device (24). 2) The wall rail rail expansion / contraction gap covering structure according to claim 1 . The drop prevention tool (23) is composed of a fixture (24) and a coupling tool (25), and the fixture (24) is divided into a pair of the inner surface portion (17) and the outer surface portion (18). 3. A wall railing expansion / contraction gap covering structure according to claim 2 , wherein the attachment (25) is connected to both attachments (24), and at least one of the attachments (24) is connected in a releasable manner. The fixture (24) has an engaging portion (26) at one end, and the other end is fixed to the inner surface portion (17) or the outer surface portion (18), and the connecting tool (25) 4. A wall railing stretchable gap covering structure according to claim 2 or 3 , wherein a hook (27) with a check claw is provided at an end of the tool (24) engaged with the engaging portion (26). The cover plate (10) when the wall rail (7, 8) is deeper than the thickness of the inner surface portion (17) on the surface facing the pavement (4, 5) in the wall rail (7, 8). A recess (39, 40) that allows the movement of the wall surface (7, 8) in the wall rail (7, 8) on the back of the surface facing the pavement (4, 5) deeper than the thickness of the outer surface portion (18) Forming recesses (39, 40) that allow movement of the cover plate (10) when the wall rails (7, 8) are expanded and contracted, and the inner surface portion (17) and the outer surface portion (18) The stretchable gap covering structure for a wall rail according to any one of claims 1, 2, 3 and 4, which is fitted in the recess (39, 40) .

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