JP2012219448A - Expansion joint of road bridge wheel guard part and structure of road bridge side end - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an expansion joint of a road bridge wheel guard part with improved durability and cut-off performance.SOLUTION: The expansion joint of the road bridge wheel guard part includes curved plates 53 and 54 arranged at an interval in a bridge length direction at a joint gap of a wheel guard part 2 and a seal plate 13. The curved plates 53 and 54 are curved and raised from a position lower than a road surface of a roadway side end so as to be convex to the outer side, the end on the roadway side of one curved plate 53 is positioned at a high position and the curved plate 53 to be curved in a smaller curvature radius than the other curved plate 54. The seal plate 13 is continuously extended from the roadway side to the wheel guard part 2, disposed to the curved plates 53 and 54 at the wheel guard part 2, curved and raised. The seal plate 13 has a deflection part at the center and both sides thereof are attached to both curved plates 53 and 54 respectively.

Description

  The present invention relates to an expansion joint for a road bridge cover and a structure of a road bridge side end.

  Between the girders of the road bridge, there is a gap that allows the main body of the road bridge to expand and contract. Therefore, a freeway side expansion joint is provided in the free space of the freeway part so that the vehicle can pass smoothly. Further, a ground cover expansion joint is provided at a free space portion of the ground cover part connected to the roadway expansion joint.

  With respect to the ground cover expansion joint, Patent Document 1 discloses that a pair of opposing vertical plates that are L-shaped corresponding to the rise of the ground cover part from the roadway part are fixed to the ground cover part. It describes that a seal plate having a V-shaped cross section is installed between them. The seal plate is separate from the seal plate of the roadway side expansion joint. Further, the seal plate has an L-shaped shape corresponding to the L-shaped vertical plate of the ground cover portion, and both side portions are vulcanized and bonded to the vertical plate.

JP 2010-13844 A

  If the seal plate of the roadway part and the seal plate of the ground cover part are separated, it is necessary to connect both the seal plates separately. However, if a seam is formed on the seal plate, water leakage from the seam is easy. If the seal plate of the ground cover part is bent up in an L shape corresponding to the rise of the ground cover part, it is advantageous for preventing water leakage from the ground cover part to the side of the road bridge. However, as the road bridge body expands and contracts, stress concentrates on the L-shaped bent portion of the seal plate, and the bent portion is easily broken.

  Then, this invention provides the structure of the road bridge side end part provided with the expansion joint of the road bridge ground cover part which improved durability and water stop, and this expansion joint.

  In order to solve the above-described problems, the present invention is such that the seal plate is continuous from the roadway portion to the ground cover portion, and the seal plate is attached to the curved plate provided on the ground cover portion.

  In other words, the expansion joint provided in the play section of the road bridge cover section presented here is composed of two curved plates arranged at intervals in the bridge length direction in the play of the cover section, and both the curved plates. And a seal plate supported by the.

  Both the curved plates are curved and rise from a position lower than the road surface at the end of the roadway so as to protrude outward. Further, one curved plate is smaller than the other curved plate with the end on the roadway side positioned at a higher position so that the curved plates do not collide with each other when the clearance between the ground cover portions is narrowed. Curved with a radius of curvature.

  On the other hand, the seal plate continuously extends from the roadway side over the ground cover portion and has a bending portion that absorbs expansion and contraction of the road bridge body at the center, and both side portions of the seal plate are hooked on the curved plates at the ground cover portion. Passed up and curved up.

  According to the expansion joint of the road bridge ground cover part, since the seal plate continuously extends from the roadway side over the ground cover part, it is not necessary to connect the seal plates, that is, to provide a seam in the seal plate. Thus, the problem of water leakage from the joint of the seal plate is solved. And, in the ground cover part, the plate to which the seal plate is attached is curved and rises so as to protrude outward from a position lower than the road surface at the end of the roadway, and the seal plate is also curved and rises correspondingly. Yes. Due to the curved rising of the seal plate, water leakage from the ground cover to the side of the road bridge is prevented, and it is not necessary to bend the seal plate into an L shape, so that the durability of the seal plate is enhanced.

  Also, one curved plate is curved with a small curvature radius with the end on the roadway side positioned at a higher position than the other curved plate, so that the curved plate when the clearance between the ground cover portions becomes narrower There is no collision between each other. For this reason, the space | interval of curved plates can be narrowed. Therefore, the width of the bent portion of the seal plate disposed between the curved plates can be narrowed, which is advantageous for preventing foreign matter from entering the bent portion.

  In a preferred embodiment, each of the curved plates is provided with a vertical plate extending in the longitudinal direction between the gaps of the ground covering portion and facing the bridge length direction, and the seal plate is interposed between the vertical plates. It is stretched over the curved plate. Further, a flange is provided at the end of each of the vertical plates on the roadway side, and the flange is coupled to the expansion joint on the roadway side. And a filling is filled between the back part of each said vertical board, and the said ground cover part.

  Moreover, the structure of the road bridge side end part shown here consists of the expansion joint of the road bridge cover part and the end part expansion joint on the roadway side as described above. The end expansion joint on the roadway side includes a pair of joint members facing in the bridge length direction. Each of the joint members includes a face portion that forms a road surface, a belly plate that supports the face portion, and a support plate that protrudes from the respective belly plates toward each other. The upper surfaces of the two support plates are provided flush with the upper surfaces of the end portions of the corresponding curved plates on the roadway side. And both the side parts of the roadway side part of the said sealing plate are attached to both support plates, and the drain outlet is opened to the lower support plate of the said both support plates.

  According to the structure of the end portion on the road bridge side, both the support plates of the end expansion joint are flush with the ends of the two curved plates of the ground expansion joint. It can be installed continuously without providing a step or a bent portion over the portion, which is advantageous in terms of installation work and durability of the seal plate. In addition, even if rainwater flows on the seal plate, the rainwater is discharged from the drain port of the support plate. Therefore, it is possible to prevent rainwater from collecting and overflowing in the expansion joint, and it is possible to reduce the number of drainage basins installed in the roadway.

  According to the present invention, since the seal plate continuously extends from the roadway side over the ground cover portion, and is attached to the curved plate at the ground cover portion and rises in a curved manner, the sealing performance is improved and the seal plate is durable. It is advantageous for improvement, and the curvature radii of both curved plates are made different so that the curved plates do not collide with each other, so that the interval between the curved plates can be narrowed, and foreign matter to the bent portion of the seal plate It is advantageous for prevention of intrusion.

  Further, according to the structure of the end portion on the road bridge side according to the present invention, the support plate of the end expansion joint is flush with the end portion of the curved plate of the cover expansion joint. It can be installed continuously without any step or bend from the ground to the ground cover, which is advantageous in terms of installation work and durability of the seal plate, and rainwater flowing on the seal plate Since it is discharged from the drainage port, it is possible to avoid the rainwater from being accumulated and overflowing in the expansion joint, and it is also possible to reduce the number of drainage basins installed in the roadway.

It is a top view which shows the side edge part of a road bridge joint part by a partial chain line. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is CC sectional view taken on the line of FIG. It is a disassembled perspective view of a ground cover expansion joint. It is a perspective view which shows the relationship between a ground cover expansion joint and an end expansion joint.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The following description of the preferred embodiments is merely exemplary in nature and is not intended to limit the invention, its application, or its use.

  In the side end portion (plan view) of the road bridge shown in FIG. 1, 1 is a roadway portion, and 2 is a ground covering portion. A plurality of roadway expansion joints 3 having a unit length (for example, 1500 mm) are connected to the play space (seam portion) of the roadway portion 1 in the longitudinal direction of the playway, and are connected to both ends thereof to be connected to the end expansion joint 4. Is installed. The ground cover 2 is provided with a ground cover expansion joint 5 connected to the end expansion joint 4. The end expansion joint 4 is an expansion joint for adjustment that compensates for a portion that is insufficient in terms of the width of the roadway portion 1 when a plurality of unit length roadway expansion joints 3 are connected.

  As shown in FIG. 2, the roadway expansion joint 3 is formed by placing post-cast concrete 8, 8 on notch steps 7, 7 formed at the ends of the road bridge bodies 6, 6. It is fixed to the main bodies 6 and 6. The roadway expansion joint 3 includes a pair of joint members 11 and 12 and a seal plate 13 that extend in the longitudinal direction of the gap 9. Each of the joint members 11 and 12 is provided on the abdominal plates 15 and 16, the face portions 17 and 18 forming the road surface provided on the upper ends of the abdominal plates 15 and 16, and the lower ends of the abdominal plates 15 and 16. And bottom plates 19 and 20. At both ends of the joint members 11, 12, flanges 21 are provided to connect the adjacent roadway expansion joints 3 to each other and to connect the roadway expansion joint 3 and the end expansion joint 4.

  The abdominal plates 15 and 16 are formed in a trapezoidal wave shape in which convex wall 15a and 16a protruding to the gap side and concave wall 15b and 16b that are relatively recessed are alternately arranged in the longitudinal direction of the gap. As for the convex part walls 15a and 16a, the upper part protrudes in the idle side relatively with respect to the lower part. The face portions 17 and 18 include large convex portions 17a and 18a that protrude greatly toward the gap side, and small convex portions 17b and 18b that have a relatively small protrusion amount toward the gap side, and the large protrusion portions 17a and 18a, A wave gap 22 is formed between the facing face portions 17 and 18 by the combination with the small convex portions 17b and 18b. An anchor 23 projects from the back of the abdominal plates 15 and 16.

  A shelf plate 25 is fixed to the lower part of one abdominal plate 15, and this shelf plate 25 projects to the idle side. The shelf plate 25 of the one abdominal plate 15 and the bottom plate 20 projecting from the lower end of the other abdominal plate 16 to the play side constitute a support plate for supporting the seal plate 13, and the play 9 is narrowed. Sometimes they are stepped so that they don't collide with each other.

  The seal plate 13 extends continuously and seamlessly over the three of the road part expansion joint 3, the end expansion joint 4 and the ground cover expansion joint 5, and the bending part 13a that absorbs the expansion and contraction of the road bridge body is provided at the center. Have. In the roadway expansion joint 3, the seal plate 13 is stretched between the shelf plate 25 of one abdominal plate 15 and the bottom plate 20 of the other abdominal plate 16. Both side portions of the seal plate 13 are sandwiched between the shelf plate 25 and the bottom plate 20 and the presser plate 26, and are attached by applying nuts 27 to the studs provided on each of the shelf plate 25 and the bottom plate 20. The implantation bolt is a bolt in which an implantation screw portion is provided on one side, a nut screw portion is provided on the opposite side, and a stopper for restricting the implantation amount is provided in the middle. The implantation screw portion is a shelf plate 25. And it is screwed in the internal thread cut by each of the baseplate 20, and the said nut 27 is screwed together by the thread part for nuts. In addition, it may replace with a stud bolt and may employ | adopt the stud bolt welded to each of the shelf board 25 and the baseplate 20. FIG. This also applies to the studs described later.

  Here, there are two types of corrugation gap 22 in which the reference line of amplitude is shifted to one side of the center line of the gap 9 and the opposite side by the combination of the large convex portions 17a, 18a and the small convex portions 17b, 18b. It is a composite waveform. As a result, the nut 27 for fastening the presser plate 26 to the seal plate 13 can be seen through the corrugated gap 22 from the road.

  As shown by a two-dot chain line in FIG. 2, fillings 28 and 29 can be packed between the stomach plates 15 and 16 facing each other. For example, a polystyrene foam material can be packed as the filling 28, and a liquid rubber sealing material can be filled as the filling 29 thereon.

  As shown in FIG. 3, the end expansion joint 4 is formed by placing post-cast concrete 8, 8 on notch steps 7, 7 formed at the ends of the road bridge bodies 6, 6. It is fixed to the main bodies 6 and 6. The end expansion joint 3 includes a pair of joint members 31 and 32 extending in the longitudinal direction of the play and the seal plate 13. Each of the joint members 31 and 32 is provided at the abdominal plates 33 and 34, the face portions 35 and 36 that form the road surface provided at the upper ends of the abdominal plates 33 and 34, and the lower ends of the abdominal plates 33 and 34. And bottom plates 37 and 38. At both ends of the joint members 31 and 32, flanges 39 are provided for connection to the roadway expansion joint 3 and the ground cover expansion joint 5. An anchor 23 projects from the back of the abdominal plates 33 and 34.

  One abdominal plate 33 is formed of a stepped plate with the upper portion protruding relatively to the idle side relative to the lower portion, and the other abdominal plate 34 is formed of a flat plate. A shelf board 41 is fixed to the lower part of one abdominal plate 33, and this shelf board 41 projects to the idle side. The shelf plate 41 of the one abdomen 33 and the bottom plate 38 projecting from the lower end of the other abdomen 34 to the idle side constitute a support plate for supporting the seal plate 13 in the end expansion joint 4. .

  That is, the shelf plate 41 and the bottom plate 38 are provided so as to be flush with the shelf plate 25 and the bottom plate 20 of the roadway expansion joint 3. Accordingly, the shelf plate 41 and the bottom plate 38 of the end expansion joint 4 are stepped so that they do not collide with each other when the clearance 9 becomes narrow, as in the roadway expansion joint 3. Then, both side portions of the seal plate 13 are spanned between the shelf plate 41 of the one abdomen plate 33 and the bottom plate 38 of the other abdomen plate 34, and are sandwiched between the shelf plate 41 and the bottom plate 38 and the presser plate 42. The nut 27 is applied to the stud bolt.

  The face portions 35 and 36 form a straight gap 43 extending in the longitudinal direction of the play so that the nut 27 for fastening the presser plate 42 to the seal plate 13 can be seen from the road. Further, a drainage port 44 is opened in the bottom plate 38 whose position is lower than that of the shelf plate 41, and a drainage pipe 45 extends from the drainage port 44 to a drainage basin (not shown) of the road bridge.

  As shown in FIGS. 4 and 5, the ground cover expansion joint 5 includes a pair of joint members 51 and 52 and the seal plate 13. The joint members 51 and 52 include quarter-arc shaped curved plates 53 and 54, and vertical plates 55 and 56 and flanges 57 and 58 fixed to the curved plates 53 and 54.

  As shown in FIG. 6, the curved plates 53 and 54 are arranged at intervals in the bridge length direction in the gap 50 of the ground covering portion 2. That is, both the curved plates 53 and 54 are raised so as to protrude outward from a position lower than the road surface at the end of the roadway, and the upper ends of the curved plates 53 and 54 are positioned at the upper end height of the ground covering portion 2. .

  The curved plates 53 and 54 support the seal plate 13 in the ground covering portion 2, and the end portions on the roadway side are flush with the shelf plate 41 and the bottom plate 38 of the end expansion joint 4. It has become. That is, one curved plate 53 is positioned at a higher position on the roadway side than the other curved plate 54 and is curved with a smaller radius of curvature than the other curved plate 54. Therefore, even if the clearance 50 of the ground cover part 2 becomes narrow, the curved plates 53 and 54 do not collide with each other. Then, both side portions of the seal plate 13 are stretched over the curved plates 53, 54, and are sandwiched between the curved plates 53, 54 and the press plates 59, 60 curved along the curved plates 53, 54, The nut 27 is applied to the stud bolt and attached.

  The vertical plates 55 and 56 extend from the ends of the curved plates 53 and 54 in the longitudinal direction from the ends of the curved plates 53 and 54 on the roadway side, and the upper ends are provided at the road surface height. Therefore, the upper ends of the curved plates 53 and 54 protrude upward from the vertical plates 55 and 56. The flanges 57 and 58 are for connection with the ground cover expansion joint 5 and project outward from both ends of the longitudinal plates 55 and 56 on the roadway side. The back portions of the vertical plates 55 and 56 are filled with a filling 61.

  According to the joint structure of the road bridge as described above, since the seal plate 13 extends continuously from the road 1 side to the ground cover portion 2, it is not necessary to connect the seal plates. The problem of water leakage from the seam of the seal plate is eliminated. And in the ground covering part 2, since the sealing plate 13 is curving and rising, water leakage from the ground covering part 2 to the side of the road bridge is prevented. In addition, since the seal plate 13 does not have an L-shaped bent portion, the expansion / contraction deformation of the bending portion 13a accompanying the expansion / contraction of the road bridge body 6 becomes smooth. That is, the stress does not concentrate locally as the road bridge body 6 expands and contracts, and the durability of the seal plate 13 increases.

  Further, the bottom plate 20 and the shelf plate 25 of the roadway expansion joint 3 to which the seal plate 13 is attached, the bottom plate 38 and the shelf plate 41 of the end expansion joint 4, and the curved plates 53 and 54 of the ground cover expansion joint 5 are However, since it does not collide when the gaps 9, 50 are narrowed, the interval between them can be narrowed. That is, the width of the bent portion 13a of the seal plate 13 can be narrowed, which is advantageous for preventing foreign matters from entering the bent portion 13a.

  Even if rainwater flows on the seal plate 13, the rainwater is discharged from the drain 44 of the end expansion joint 4. Therefore, it is possible to avoid the rainwater from being accumulated and overflowing in the expansion joints 3, 4, and 5, and to reduce the number of drainage basins installed in the roadway.

  The corrugated clearance 22 of the roadway expansion joint 3 is a composite waveform of two types of waveforms in which the reference line of amplitude is shifted to one side and the opposite side of the center line of the clearance. Can be seen through the waveform gap 22. Also in the end expansion joint 4, the seal plate mounting nut 27 can be viewed through the straight clearance 43 from the road. Further, also in the ground cover expansion joint 5, the seal plate mounting nut 27 can be viewed from between the vertical plates 55 and 56. Therefore, the nut 27 can be easily attached and detached when the seal plate 13 is replaced from the road.

DESCRIPTION OF SYMBOLS 1 Roadway part 2 Ground cover part 3 Roadway part expansion joint 4 End part expansion joint 5 Ground cover part expansion joint 6 Road bridge main body 13 Seal plate 31, 32 Joint member 33, 34 Abdominal plate 35, 36 Face part 38 Bottom plate (support plate) )
41 Shelf (support plate)
44 Drain port 51, 52 Joint member 53, 54 Curved plate 55, 56 Vertical plate 57, 58 Flange

Claims (3)

An expansion joint of a road bridge cover covering the gap between the road bridge cover,
Two curved plates arranged with a gap in the bridge length direction between the gaps of the ground cover part, and a seal plate supported by both curved plates,
Both the curved plates are curved and rise so as to protrude outward from a position lower than the road surface at the end of the roadway.
Further, one curved plate is smaller than the other curved plate with the end on the roadway side positioned at a higher position so that the curved plates do not collide with each other when the clearance between the ground cover portions is narrowed. Curved with a radius of curvature,
The seal plate continuously extends from the roadway side over the ground cover portion, is stretched over the curved plates at the ground cover portion, and rises curved.
The above-mentioned seal plate has a flexure part which absorbs expansion and contraction of a road bridge body in the center, and its both side parts are attached to both curved plates, respectively. In claim 1,
Each of the two curved plates is provided with a vertical plate extending in the longitudinal direction between the play of the ground cover and facing the bridge length direction,
Between the two vertical plates, the seal plate is spanned between the two curved plates,
A flange is provided at an end of each of the vertical plates on the roadway side, and the flange is coupled to an expansion joint on the roadway side,
An expansion joint for a road bridge ground covering portion, wherein filling is filled between a back portion of each of the vertical plates and the ground covering portion. It consists of the expansion joint of the road bridge cover of claim 1 or claim 2 and the end expansion joint of the roadway side,
The end expansion joint on the roadway side includes a pair of joint members facing in the bridge length direction,
Each of the joint members includes a face portion that forms a road surface, a belly plate that supports the face portion, and a support plate that protrudes in a stepped manner toward each other from each belly plate,
The upper surface of each of the two support plates is provided flush with the upper surface of the end portion on the roadway side of each of the corresponding curved plates,
Both sides of the roadway side portion of the seal plate are attached to the both support plates,
A structure of the end portion on the road bridge side, characterized in that a drain outlet is opened in one of the two support plates.

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