JP6153187B1 - Road bridge cover widening unit - Google Patents

Abstract

[PROBLEMS] To provide a road bridge land cover widening unit capable of draining while reducing a burden on a floor slab caused by a cross-sectional defect. (A) An upper surface portion, a front surface portion connected continuously to one lower side of the upper surface portion, and a rear surface portion facing the front surface portion and continuously connected to the lower side of the other end of the upper surface portion. And an inverted U-shaped face plate 2 having an opening on the bottom side, and (b) a bottom plate portion 3a which is disposed on the bottom side of the face plate and forms a hollow curb portion 10 in combination with the face plate. A base plate 3 having an extending portion 3b extending outwardly from the front side of the base plate, (c) a belly plate 6 fixed to the back surface of the base plate, and (d) a vertical cylinder portion 112a and a vertical cylinder provided inside the curb portion. A hollow T-shaped water channel pipe 112 having a horizontal tube portion 112b connected in a T shape on the side surface and a water collecting port 111 for taking in drainage at the end of the horizontal tube portion. [Selection] Figure 1

Description

  The present invention relates to a road bridge land cover widening unit that is installed to expand road width in a road bridge.

  Conventionally, the road bridge landscaping widening unit replaces the method of removing the ground cover at the edge of the floor slab and connecting the concrete ground cover to the outer part of the floor slab as an extension means for road width made of concrete floor slab. 2. Description of the Related Art A steel road bridge land cover widening unit made of steel is known that extends outwardly on the front surface side and is fixed to a ground cover removal portion at an end portion of a floor slab (see, for example, Patent Document 1). Rainwater that falls on the road flows to the side of the road surface due to the road gradient, so drainage water is drained on the side of the road by allowing rainwater to flow downward from the road surface and draining downward. It was. However, some existing bridges do not have drainage facilities, and even with drainage facilities, there was a risk that drainage could not catch up and stagnated on the road surface when there was heavy rainfall. The stagnant rainwater flows over the base plate extension of the road bridge widening unit. The base plate extending portion plays a role of fixing the road bridge covering widening unit to the ground covering removing portion at the end portion of the floor slab. As a countermeasure against drainage of stagnant rainwater, a method is known in which a through-type drainage basin that drains rainwater from the upper surface of the base plate extension to the lower side is drained into the base plate extension of the road bridge widening unit. (For example, refer to Patent Document 2).

JP 2001-49618 A Japanese Patent Laid-Open No. 2005-220589

  However, in existing bridges that do not have drainage facilities, rainwater is likely to stagnate, and in existing bridges that have drainage basins on the side of the road, the drainage basin is positioned where the vehicle passes by widening the road. Each time it passes, there is a problem that a wheel load is applied and a load is applied to the floor slab.

  Moreover, in the conventional road bridge cover widening unit in which the penetration type drainage basin is provided in the base plate extension part of the road bridge cover widening unit, the floor slab or road side under the part where the drainage basin is provided in the base plate extension part There was a problem that the floor slab of the portion where the drainage basin was provided had a cross-sectional defect and the yield strength was weakened, so that damage was likely to occur. In addition, there is a problem in that reinforcing bars are stretched around the concrete slab, and a drainage hole cannot be provided at an arbitrary location. Furthermore, since it is provided in the gap between the reinforcing bars, the hole diameter cannot be increased, and a large number of holes are provided in the floor slab to drain rainwater, resulting in a problem that the proof strength of the side portion of the bridge is reduced. there were.

  Accordingly, a first object of the present invention is to provide a road bridge widening unit that solves the above-described problems and enables drainage while reducing the burden on the floor slab caused by a cross-sectional defect.

In order to achieve the above object, according to the first aspect of the present invention, (a) an upper surface portion, a front surface portion connected to one lower side of the upper surface portion, a front surface portion facing the front surface portion, and the other of the upper surface portion. An inverted U-shaped face plate having an opening on the bottom side;
(B) a base plate that is disposed on the bottom side of the face plate and has a bottom surface that forms a hollow curb in combination with the face plate;
(C) a belly plate fixed to the back surface of the base plate;
(D) A water collecting port that is provided inside the curb portion and has a vertical tube portion and a horizontal tube portion connected in a T-shape to the side surface of the vertical tube portion and takes in drainage into the end portion of the horizontal tube portion. A hollow T-shaped water pipe having
Have
A road bridge land cover widening unit is provided, wherein the water collecting port is provided in front of the curb portion, and a drainage hole is provided in a lower portion of the vertical tube portion.

  According to the 1st aspect of this invention, it can drain without requiring a penetration type drain hole in a baseplate extending | stretching part or a road edge part, and can prevent the cross-sectional defect | deletion of a floor slab. In addition, drainage is possible even if there is no drainage facility on the existing bridge side where the road bridge cover widening unit is provided. In addition, when there is a drainage facility on an existing bridge, drainage is possible even if the drainage facility at the roadway position is blocked, so that the cross section of the floor slab can be prevented. Accordingly, it is possible to reduce the burden on the floor slab due to the cross-sectional defect and drain the water. As a result, prevention of deterioration and accidents due to cross-sectional defects are realized. In addition, since the hole surface for collecting water is not directed upward but is directed along the surface of the front surface portion of the face plate, dust or the like is difficult to enter. Also, drainage holes can be provided at any position in the bridge axis direction without worrying about the position of the reinforcing bars in the floor slab, and the hole diameter can be increased without worrying about the pitch of the reinforcing bars in the floor slab. Can do.

  It is preferable that an inspection hole is provided in the upper portion of the vertical cylinder portion, and a lid portion that can be opened and closed is provided in the upper portion of the inspection hole in the face plate. Inspection is easy and maintenance is possible even if ice clogging or dust contamination occurs.

  It is preferable that the water collection port has a hole having a minor axis of 2 to 4 cm. While preventing the coffee can from entering through the drain hole, the long diameter of the hole is not limited, so a large amount of rainwater can be drained.

  According to the present invention, it is possible to reduce the burden on a floor slab due to a cross-sectional defect and to drain water.

It is a perspective view (1) of Example 1 of the road bridge covering widening unit of this invention. It is a perspective view (2) of Example 1 of the road bridge covering widening unit of this invention. It is internal structure explanatory drawing of Example 1 of the road bridge covering widening unit of this invention. It is a right view of Example 1 of the road bridge covering widening unit of this invention. It is a left view of Example 1 of the road bridge covering widening unit of this invention. It is a top view of Example 1 of the road bridge covering widening unit of the present invention. It is a front view of Example 1 of the road bridge covering widening unit of the present invention. It is a rear view of Example 1 of the road bridge covering widening unit of the present invention. It is a bottom view of Example 1 of the road bridge covering widening unit of the present invention. It is an AA line sectional view of Example 1 of a road bridge covering widening unit of the present invention. It is a BB line sectional view of Example 1 of the road bridge covering widening unit of the present invention. It is explanatory drawing of the drainage method and the installation method of Example 1 of the road bridge cover widening unit of this invention.

  EXAMPLES Hereinafter, although this invention is concretely demonstrated using an Example about this invention, this invention is not limited to these.

  The road bridge cover widening unit of the first embodiment is configured to take in drainage from the front side of the curb portion and drain downward, and can reduce the burden on the floor slab due to a cross-sectional defect and can drain.

{Constitution}
FIG. 1: is a perspective view (1) of Example 1 of the road bridge covering widening unit of this invention. FIG. 1 is a diagram illustrating a plane (upper surface), a back surface, and a left side surface. FIG. 2: is a perspective view (2) of Example 1 of the road bridge covering widening unit of this invention. FIG. 2 is a diagram illustrating a bottom surface, a back surface, and a left side surface. The road bridge land cover widening unit 1 is made of steel, and the front bent side of the abdomen 6 is provided at the end of the concrete slab with the back side on the outside and the front side on the concrete slab side. Install them side by side so that they touch. The road bridge land cover widening unit 1 has a hollow unit at the end for expanding the road width of the road bridge, and is particularly suitable for installation on a bridge. The hollow unit portion of the road bridge land cover widening unit 1 can also serve as a curb. In the present embodiment, the hollow unit portion may be collectively referred to as the curbstone portion 10. The extending portion 3 b is not included in the curb portion 10. After installing on the concrete floor slab, the extension part 3b of the base plate 3 is attached and fixed on the concrete floor slab, and asphalt or the like is poured onto the extension part 3b on the front side of the road bridge widening unit, Extend the width of the roadway or sidewalk. A balustrade or a protective fence may be provided on the road bridge land cover widening unit. In the present embodiment, the base plate 3 includes a bottom surface portion 3a that is a lower portion of the curb portion 10, and an extending portion 3b that is a portion obtained by extending the bottom surface portion 3a outward from the front side of the curb portion 10. There is no need for 3b.

  At right and left ends of the road bridge widening unit 1, a right-angled U-shaped, that is, a reverse U-shaped lock plate 8 is fitted along the inner surface of the face plate 2. It protrudes outside the inner walls of the left and right end portions. The lock plate 8 maintains the height between the upper surface portion 24 of the face plate 2 and the base plate 3 and prevents rattling.

  FIG. 3 is an explanatory diagram of the internal structure of the embodiment 1 of the road bridge widening unit of the present invention. FIG. 3 shows a state in which the face plate 2 and the lock plate 8 in FIG. 1 are removed, and a part of the base plate bottom surface reinforcing rib 31 and a part of the front side plate 4 are omitted for explanation.

  As shown in FIGS. 1 to 3, the road bridge widening unit 1 includes (a) an upper surface 24, a front surface 23 connected to one lower side of the upper surface, and an upper surface facing the front surface. An inverted U-shaped face plate 2 having an opening on the bottom side, and (b) a combination with the face plate disposed on the bottom side of the face plate. A base plate 3 having a bottom surface portion 3a that forms a hollow curb portion 10 and an extending portion 3b extending outward from the front side of the face plate; (c) a belly plate 6 fixed to the back surface of the base plate; A hollow T provided inside the curb portion, having a vertical tube portion 112a and a horizontal tube portion 112b connected to the side surface of the vertical tube portion in a T-shape and having a water collecting port 111 for taking in drainage at the end of the horizontal tube portion. And a water channel pipe 112 having a letter shape. .

  The road bridge terrain widening unit 1 includes a front side plate 4 standing on the upper surface of the base plate and fixed to the inner surface of the front surface of the face plate, and a rear side plate standing on the upper surface of the end portion of the base plate and fixed to the inner surface of the rear surface of the face plate. And 5. The front side plate 4 and the back side plate 5 are vertically welded to the upper surface of the base plate 3. There is a notch in the lower part of the front side plate 4, and an anchor bar 35 is inserted and fixed at a right angle. In this embodiment, the anchor bar 35 has a thickness of about 20 mm, but is not limited to this. The water collecting port 111 is provided on the front surface of the curb portion 10, and a drain hole 112d is provided in the lower portion of the vertical tube portion 112b. In the upper part of the front side plate 4, there is provided a water collection well opening 411 that is a notch for fitting the water collection well 111.

  In the water channel pipe 112, the upper end of the vertical tube portion 112 b is an inspection hole 112 c that penetrates the face plate 2, and a water channel pipe inspection lid 242 that is a lid that can be opened and closed is provided above the inspection hole. The lower end of the vertical cylinder portion 112b is a drain hole 112d, and drains the drain downward. The water collecting port 111 is a plate provided with a plurality of through holes, and guides rainwater from the outside to the inside through the holes. The short diameter of the hole of the water collecting port 111 is not limited, but is preferably 2 to 4 cm. If the minor axis is smaller than 2 cm, the water collecting ability is not excellent, and if the minor axis is larger than 4 cm, large garbage such as a coffee can may be clogged in the hole of the collecting tap and the water collecting ability may be lowered. In this embodiment, the minor axis of the water collection port 111 is 3 cm. The shape of the hole may be a vertically long slit shape, a punch hole shape, or an oval shape, and the long diameter is not limited.

  FIG. 4 is a right side view of Example 1 of the road bridge land cover widening unit of the present invention. FIG. 5 is a left side view of Example 1 of the road bridge land cover widening unit of the present invention. Moreover, FIG. 6 is a top view of Example 1 of the road bridge covering widening unit of the present invention. Moreover, FIG. 7 is a front view of Example 1 of the road bridge cover widening unit of the present invention. Moreover, FIG. 8 is a rear view of Example 1 of the road bridge cover widening unit of the present invention. Moreover, FIG. 9 is a bottom view of Example 1 of the road bridge covering widening unit of the present invention.

  The face plate 2 is formed by bending a steel plate in three directions continuously in the same direction to form a right-angled U-shape, that is, a square inverted U-shape. That is, the face plate 2 has an upper surface portion 24, a front surface portion 23 whose upper end is continuous with one end of the upper surface portion 24 and perpendicular to the upper surface portion 24, and an upper end at the other end of the upper surface portion 24. It has a back surface portion 22 that is continuous and faces the front surface portion 23 to be a parallel surface. The face plate 2 has a plurality of face plate reinforcing ribs 21 that are partly welded and hung on the back side of the upper surface part, and are in contact with the inner surface of the front part and the rear part and partly welded and fixed. The number of sheets is not limited. The lower portion of the front surface portion 23 of the face plate 2 is cut out by the height of the anchor bar 35. Further, a part of the front surface 23 of the face plate 2 is further cut away upward to provide a water collection port opening 231 for fitting the plate of the water collection port 111. A water pipe inspection lid 242 and a column attachment hole 243 are provided on the upper surface portion 24 of the face plate 2. The water channel pipe inspection lid 242 covers the inspection hole 112c, thereby preventing dust and ice blocks from entering the inspection hole 112c during normal operation and clogging the drainage basin. Maintenance such as inspection and repair can be easily performed. The support mounting hole 243 is a hole for enabling mounting of a support fence post. Since the guard fence post transmits stress by the face plate 2, there is no problem even if a drain pipe is installed inside. In the present embodiment, the unit is without a protective fence post, but may be a unit with a protective fence post.

  The base plate 3 is a flat plate of a steel plate arranged on the bottom side of the face plate, and is longer than the length from the front surface portion to the back surface portion of the face plate, and the bottom surface portion 3a of the base plate 3 is located on the bottom side of the face plate. The curb portion 10 which is a rectangular parallelepiped hollow cylindrical box is formed by closing the opening. There is a portion protruding from the face plate 2 on the front surface side of the base plate 3, and in the present application, this is distinguished from the bottom surface portion 3a and is referred to as an extending portion 3b. An anchor bar 35 is provided on the upper surface side of the base plate 3. The anchor bar 35 is a plurality of rod-shaped ribs provided in the direction from the extending portion of the base plate to the bottom surface portion, and reaches the inside of the curb portion 10.

  FIG. 10 is a cross-sectional view taken along line AA of Example 1 of the road bridge covering widening unit of the present invention. FIG. 11 is a sectional view taken along line BB of Example 1 of the road bridge land widening unit of the present invention. The front side plate 4 and the front side portion 23, and the back side plate 5 and the back side portion 22 are brought into close contact with each other and fixed with bolts 9. The front side plate 4 and the back side plate 5 are inside the front portion 23 and the back portion 22, respectively. Further, the base plate 3 has a plurality of base plate bottom surface reinforcing ribs 31 which are erected by welding on the upper surface of the base plate, and are in contact with and welded to the inner side surfaces of the front side plate 4 and the back side plate 5. It is not limited. A drain hole 39 which is a through hole is provided in the bottom surface portion 3a of the base plate. The drainage hole 39 is provided below the drainage hole 112d, and drains the drainage led from the water collecting port 111 into the pipe of the water channel pipe 112 downward.

  The abdomen 6 is an L-shape having a base fold curved surface portion 66 and a tip fold curved surface portion 67. The base fold curved surface portion is fixed to the back surface of the base plate 3 and the tip fold curved surface portion protrudes downward. is there. It is fixed to the back side of the base plate 3 with bolts 9. The abdominal plate 6 includes abdominal plate reinforcing rib 61 fixed in contact with the inner side surfaces of the base folding surface portion 66 and the front folding surface portion 67. The abdomen reinforcing rib 61 is fixed to the base folding surface 66 and the front folding surface 67 by welding. The abdomen reinforcing rib 61 is provided perpendicularly to the base folding surface 66 and the front folding surface 67. In the present embodiment, the front folding surface portion 67 is located below the extending portion 3b. The base folding surface portion 66 is provided with a drain hole 69 which is a through hole. The drainage hole 69 is provided below the drainage hole 39 and drains the drainage led from the water collection port 111 into the pipe of the water channel pipe 112 downward. Below the drainage hole 69, a steel pipe pipe end-pipe treatment pipe 113 is connected to perform drainage to the outside. A hole for attaching a VP pipe is formed in the lower part of the flow end treatment pipe 113. Since the flow-end treatment pipe 113 is not embedded in the concrete floor slab but is provided in the external space in the outer side direction from the concrete floor slab, a cross-sectional defect does not occur and a burden on the floor slab does not occur.

  In this embodiment, there are three abdominal plate reinforcing ribs 61, six face plate reinforcing ribs 21 including two for reinforcing fence support installation, and four base plate bottom surface reinforcing ribs 31 which do not overlap each other. . The face plate reinforcing rib 21, the base plate bottom surface reinforcing rib 31, and the abdomen reinforcing rib 61 all serve to maintain strength.

  A single guard plate 7 is provided on the front surface 23 above the bolt 9 from the right end to the left end. Further, a bolt hole 68 is formed in the front bent surface portion 67 of the abdominal plate 6. The base plate 3 has a bolt hole 38 formed therein.

  In this embodiment, the length of the face plate 2 in the longitudinal direction is 1194 mm, the length in the width direction is 500 mm, and the height is 310 mm, but the size is not limited to this. According to the present embodiment, the road width is increased by the distance from the portion of the base plate 3 where the front folding surface 67 is provided to the outer end of the base plate 3.

  FIG. 12 is an explanatory diagram of a drainage method and an installation method according to the first embodiment of the road bridge land widening unit of the present invention. The road bridge land cover widening unit 1 is installed by attaching the extending portion 3b of the base plate 3 on the ground cover removing portion at the end portion on the concrete floor slab side. The two ends of the extending portion 3b and the abdomen tip folding surface portion 67 are covered and adhered to the side end portion of the concrete floor slab C, and the road bridge cover widening unit 1 is fixed to the concrete floor slab C with bolts. Asphalt D is paved so as to cover the anchor bar 35 on the extending portion 3b. In FIG. 12, bolts for stopping asphalt and floor slabs are not shown. When paving, the lower end of the water collection port 111 is set to be above the upper surface of the asphalt. Rainwater is guided and drained in the direction of the arrow in the figure. The water channel pipe 112, the water channel pipe inspection lid 113, and the flow end treatment pipe 113 serve as the drainage unit 11.

{effect}
According to the present embodiment, it is possible to reduce the burden on the floor slab due to the cross-sectional defect and drain the water.

  According to the present embodiment, a drainage function can be added to an existing bridge having no drainage gutter. In addition, if there is a drainage facility on the existing bridge, the existing drainage basin will become the roadway side by widening. Therefore, a great amount of reinforcement is required to prevent cross-sectional defects, but according to the present embodiment, there is no need to use the drainage equipment of the existing bridge, and it can be backfilled and stopped, so there is no reinforcement. Tesumu. In addition, if there is a drainage facility on the existing bridge, the existing drainage basin that becomes the roadway side by widening will be located outside the existing drainage basin, that is, higher than the widened area, and will have a reverse slope to the existing drainage basin. However, rainwater may accumulate on the upper surface of the extension part of the road bridge land cover widening unit, but according to the present embodiment, the rainwater on the upper part of the extension part is guided to the water collecting port and can be drained smoothly.

  In addition, according to the present embodiment, since the drain hole is not drilled in the concrete slab, it is not necessary to newly drill a floor slab to provide a drainage pit, and it is possible to prevent a cross-sectional defect, and it is also necessary to avoid the position of the reinforcing bar It is possible to provide a water collection port with a free diameter at a free location. Therefore, according to the present Example, since an anchor bar and a reinforcement rib can adjust an attachment position, based on drainage calculation, a drainage hole can be arbitrarily installed in a required location in a curb part. If there is an existing drainage pipe, a drainage hole can be provided at any location according to the position of the drainage pipe. Further, according to the present embodiment, both can be installed with and without a protective fence post, the load of the protective fence post can be handled by the face plate, and can be drained by the drain pipe inside the curb portion.

  Moreover, according to the present Example, compared with the case where a drain hole is provided in an extending part, earth and sand are hard to accumulate at an entrance and the inside. In many cases, the road gradient is about 2%. However, according to the present embodiment, since the water collecting port is provided in the front surface portion, the slope is not reversed and the drainage is not easily collected. Moreover, according to the present Example, it can clean only by opening a water pipe inspection lid | cover, and a maintenance becomes easy.

  The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the invention. In addition, the constituent elements of the above embodiments can be arbitrarily combined without departing from the spirit of the invention.

DESCRIPTION OF SYMBOLS 1 Road bridge cover widening unit 2 Faceplate 21 Faceplate reinforcement rib 22 Back surface part 23 Front surface part 231 Water collecting port opening 24 Upper surface part 242 Water pipe inspection cover 243 Column attachment hole 3 Base plate 3a Bottom surface part 3b Extension part 31 Base plate Bottom side reinforcing rib 35 Anchor bar 38 Bolt hole 39 Drain hole 4 Front side plate 411 Water collecting port opening 5 Back side plate 6 Abdominal plate 61 Abdominal plate reinforcing rib 66 Base folded curved surface portion 67 Front folded curved surface portion 68 Bolt hole 69 Drainage Hole 7 Guard plate 8 Lock plate 9 Bolt 10 Curb part 11 Drainage part 111 Drainage port 111 Water channel pipe 112a Horizontal cylinder part 112b Vertical cylinder part 112c Inspection hole 112d Drainage hole 113 Drainage pipe C Concrete floor slab D Asphalt

Claims (3)

(A) an upper surface portion, a front surface portion continuous with one lower side of the upper surface portion, and a rear surface portion facing the front surface portion and continuous with the lower side of the other upper surface portion; An inverted U-shaped faceplate to be an opening;
(B) a base plate that is disposed on the bottom side of the face plate and has a bottom surface that forms a hollow curb in combination with the face plate;
(C) a belly plate fixed to the back surface of the base plate;
(D) A water collecting port that is provided inside the curb portion and has a vertical tube portion and a horizontal tube portion connected in a T-shape to the side surface of the vertical tube portion and takes in drainage into the end portion of the horizontal tube portion. A hollow T-shaped water pipe having
Have
The road bridge land cover widening unit characterized in that the water collecting port is provided in front of the curb portion, and a drainage hole is provided in a lower portion of the vertical tube portion. The road bridge land cover widening unit according to claim 1, wherein an inspection hole is provided in an upper part of the vertical cylinder part, and a lid part that can be opened and closed is provided in the upper part of the inspection hole in the face plate. . The road drainage cover widening unit according to claim 1 or 2, wherein the water collecting shed has a hole having a minor axis of 2 to 4 cm.

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