JP3285846B2 - Road bridge joint structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a structure of a road bridge joint.

[0002]

2. Description of the Related Art JP-A-63-312403 discloses that
An expansion joint that allows expansion and contraction of the road bridge body is provided at a joint of the road bridge, and a concrete part is cast to form a road surface between the expansion joint and asphalt pavement. A structure is described in which a depression is formed along the boundary with the pavement, and the depression is filled with a liquid rubber sealing material.

[0003] That is, since the wear resistance is different between the concrete portion and the asphalt pavement, and the asphalt pavement surface wears first, so that a step is generated at the boundary between the two over time. According to the structure described in the above publication, even if such a step occurs, since a plurality of depressions are provided along the boundary on the concrete portion side, the asphalt pavement and a low surface due to the depressions The boundary line between the concrete portion and the high surface has a waveform, and the impact when the tire of the vehicle gets over the step is reduced.

[0004]

However, when a step is formed between the asphalt pavement surface and the concrete surface, even if the boundary line of the height is corrugated, some impact may be caused when the vehicle gets over the step. Inevitably suffer, and the vibration and noise of the road bridge generated at that time also become a problem.

[0005]

According to the present invention, a rubber portion for cushioning is provided between the concrete portion and the asphalt pavement in order to solve such a problem.

That is, according to the first aspect of the present invention, an expansion joint which allows expansion and contraction of the road bridge body is provided at a joint of the road bridge, and a road surface is formed between the expansion joint and asphalt pavement. In the structure of the road bridge joint portion where concrete is cast, a rubber portion extending in the seam longitudinal direction is provided between the concrete portion and the asphalt pavement, and the upper surface of the rubber portion forms a road surface , Rubber part
Is adhered to the upper part of the supporting steel plate, and the supporting steel plate is
It is characterized in that it is fixed to the rear part by an anchor .

With such a structure, even if the asphalt pavement is worn and its height is lower than that of the concrete part, the rubber part is less worn than the asphalt pavement. The upper surface is maintained at substantially the same height, and a step is generated at the boundary between the rubber portion and the asphalt pavement.

[0008] Therefore, when the automobile moves from the asphalt pavement to the rubber portion, the tire hits the edge of the rubber portion which is higher than the asphalt pavement and rides on it, but the rubber portion is softer than the concrete portion. Therefore, the impact received by the tire at that time is extremely small, and almost no vibration or noise is generated on the road bridge. When the vehicle moves from the rubber part to the concrete part, there is almost no difference in height between the two parts even after a long time, so that the tire can smoothly move without receiving any impact.

On the other hand, when the vehicle moves from the concrete part to the rubber part, there is no substantial difference in height between the two parts, so that the transition of the tire is smooth. Furthermore, when the car moves from the rubber part to asphalt pavement, even if there is a step between the two, it is a transition from a high place to a low place, so the vertical movement of the tire at that time is absorbed by the suspension of the car You. Moreover, since the rubber portion is slightly dented by the wheel load, there is not much difference in elevation at the time of transition. Therefore, there is almost no impact to the vehicle body, and almost no vibration or noise is generated on the road bridge.

[0010] Then, the rubber portion is located above the supporting steel plate.
The supporting steel plate is anchored to the concrete part
The rubber part is
Firmly fixed to the concrete part via the anchor
The rubber part peels off the road as the car passes.
Is prevented.

According to a second aspect of the present invention, in the structure of the road bridge joint according to the first aspect, the concrete side of the rubber portion has a convex portion and a concave portion which enter and exit toward the concrete portion. It is characterized by being formed in irregularities alternately arranged in the seam longitudinal direction, and the boundary line between the rubber portion and the concrete portion is an irregularity line.

In the case of the present invention, even if a step is formed between the rubber portion and the concrete portion, the boundary line between the two is formed as an uneven line. Rather, a part of the tire goes over the step first, and the remaining part gets over the step later, so that it is possible to prevent the tire from suddenly moving up and down and from acting on the tire in the front-rear direction.

[0013] The invention according to claim 3 is the invention in the joint of a road bridge.
An expansion joint that allows expansion and contraction of the road bridge body is provided,
A road is formed between the expansion joint and asphalt pavement.
Structure of road bridge joint where concrete is cast
In the above, the concrete part and asphalt pavement
A rubber portion extending in the longitudinal direction of the joint is provided between the rubber portions.
The upper surface forms a road surface , and the asphalt pavement side of the rubber portion is formed with irregularities in which convex portions and concave portions that enter and exit toward the asphalt pavement are alternately arranged in the longitudinal direction of the seam. It is in contact with the asphalt pavement, and the concave portion is filled with a rubber seal material.

In the case of the present invention, even if a step is formed between the asphalt pavement and the rubber portion due to abrasion of the asphalt pavement, the rubber portion is formed unevenly. Rather than climbing over, the part of the tire goes over the step first, and the rest goes over the step later, so that it is possible to prevent the tire from suddenly moving up and down and from acting on the tire in the front-rear direction.

According to a fourth aspect of the present invention, an expansion joint that allows expansion and contraction of the road bridge body is provided at a joint of the road bridge, and concrete is formed so as to form a road surface between the expansion joint and asphalt pavement. In the structure of the road bridge joint part being cast, the concrete part is provided with a rubber part extending in the seam longitudinal direction along the pavement, and a part of the rubber part is spaced apart in the seam longitudinal direction on the road surface. And a large number of them are exposed.

In the case of the present invention, even if a step is formed between the asphalt pavement and the concrete portion due to the abrasion of the asphalt pavement, the rubber portions and the concrete portions are alternately arranged along the asphalt pavement. The entire width of a car tire does not go over the step at the same time, but part of the tire goes over the step first, and the rest goes over the step from behind, causing the tire to move up and down suddenly or The impact of the shock is avoided.

The invention according to claim 5 is the invention according to claim 3 or claim
Item 4 is the road bridge joint structure according to Item 4 , wherein the rubber portion is bonded to an upper portion of a supporting steel plate, and the supporting steel plate is fixed to the concrete portion by an anchor.

Therefore, according to the present invention, the rubber portion is firmly fixed to the concrete portion via the supporting steel plate and the anchor, and the rubber portion is prevented from peeling off the road as the vehicle passes.

[0019]

According to the first aspect of the present invention, a rubber portion extending in the longitudinal direction of the seam is provided between the concrete portion of the seam portion of the road bridge and the asphalt pavement, and the upper surface of the rubber portion forms a road surface. And the rubber part is located above the supporting steel plate.
The supporting steel plate is anchored to the concrete part.
Even if the asphalt pavement is worn down and its height is lower than the concrete part,
Together with the impact received by the vehicle passing through the road bridge seam portion by buffering action of the rubber portion becomes extremely small, vibration and noise generated road bridge by its passage also Ri Do in extremely small, yet the passage of motor vehicles Accompanying go
The rubber part is prevented from peeling off the road, improving durability
I do.

According to the second aspect of the present invention, the concrete side of the rubber portion is formed with irregularities in which convex portions and concave portions that enter and exit toward the concrete portion are alternately arranged in the longitudinal direction of the seam. Since the boundary between the portion and the concrete portion is an uneven line, it is further advantageous in reducing the impact, vibration and noise.

According to the third aspect of the present invention, the asphalt pavement side of the rubber portion is formed with irregularities in which convex portions and concave portions that enter and exit toward the asphalt pavement are alternately arranged in the longitudinal direction of the seam. Since the convex portion is in contact with the asphalt pavement and the concave portion is filled with a rubber seal material, it is further advantageous in reducing the impact, vibration and noise.

According to the fourth aspect of the present invention, the concrete portion is provided with a rubber portion extending in the longitudinal direction of the seam along the pavement, and a part of the rubber portion is formed on the road surface at intervals in the longitudinal direction of the seam. Even if a step is generated between the asphalt pavement and the concrete part due to the abrasion of the asphalt pavement, the impact received by the automobile passing through the road bridge joint becomes extremely small, The vibration and noise generated on the road bridge will be extremely small.

According to the fifth aspect of the present invention, the rubber portion is bonded to the upper portion of the supporting steel plate, and the supporting steel plate is fixed to the concrete portion by the anchor, so that the rubber portion can be reliably supported. And the durability is improved.

[0024]

Embodiments of the present invention will be described below with reference to the drawings.

<Embodiment 1> In the joint portion of the road bridge shown in FIG. 1, 1 is a road bridge main body (concrete floor slab), 2 is asphalt pavement, and 3 is an expansion joint. The expansion joint 3 includes a pair of vertical plates 5 and 5 facing each other with a joint play 4 therebetween, and a rubber sealing member 6 connecting the inner surfaces of the vertical plates 5 and 5 facing each other. . Post-cast concrete 7, 7 is cast between the asphalt pavements 2, 2 and the expansion joint 3, and the upper surface of the post-cast concrete 7 forms a road surface. A rubber plate 9 extending in the longitudinal direction of the joint is provided between the pavement 2 and the post-cast concrete 7, and the upper surface of the rubber plate 9 forms a road surface.

The vertical plates 5 and 5 are corrugated plates extending in the longitudinal direction of the seam alternately bending to the right and left, and extend in the longitudinal direction of the seam alternately bending to the right and left. Are opposed to each other so as to form a joint play 4. An anchor (not shown) for firmly fixing the vertical plate 5 to the road bridge main body 1 is provided on the rear surface of the vertical plate 5, and the anchor is embedded in the post-cast concrete 7.

The rubber plate 9 is disposed with the plate surface horizontal.
It is adhered to the upper surface of the horizontal part of the angle-shaped supporting steel plate 11 composed of the horizontal part and the vertical part. The supporting steel plate 11 is provided with anchors 12 protruding from the horizontal and vertical portions thereof, and is fixed to the post-cast concrete 7 by the anchors 12.

At the time of construction, first, a notch step 13 is formed at the end of the road bridge main body 1 and a seam gap (floor gap) 14 is formed.
And the stuffing is stuffed on the seam gap 14 and the notch steps 13, to the height of the upper surface of the road bridge body 1. In that state, the usual heated asphalt mixture is continuously applied to the entire road bridge including the padding. Thereafter, a cutting line is cut into the pavement at a position slightly outside the notch step 13 in the longitudinal direction of the seam with a cutter, and the pavement and padding inside the cutting line are removed.

Next, an expansion joint 3 having an anchor is disposed above the seam gap 14 and a rubber plate 9 and an anchor 12 are previously connected to a supporting steel plate 11 so as to be along the asphalt pavement 2. Notch step 13
At the end of the Then, the post-cast concrete 7 is poured into the notch step portion 13.

With such a structure of the road bridge joint,
Even if the asphalt pavement 2 is worn and its height is lower than that of the post-cast concrete 7, the rubber plate 9 has less wear than the asphalt pavement. Therefore, a step is formed between the asphalt pavement 2 and the rubber plate 9, but the upper surface of the rubber plate 9 and the upper surface of the post-cast concrete 7 are kept at substantially the same height.

When the tire of an automobile rides on the rubber plate 9 from the asphalt pavement 2, the tire hits the edge of the rubber plate 9, but since the rubber plate 9 is soft unlike concrete, the tire receives an impact. Is extremely small, and vibration and noise hardly occur on the road bridge. Subsequently, when the tire moves from the rubber plate 9 to the post-cast concrete 7, there is no substantial step between the two, so that the transition becomes smooth.

On the other hand, when the automobile tire moves from the post-cast concrete 7 to the rubber plate 9 on the contrary, the transition is smooth because there is no substantial step between the two. Further, when the tire moves from the rubber plate 9 to the asphalt pavement 2, the transition is from a high place to a low place, and since the rubber plate 9 is slightly depressed by the wheel load, there is not much difference in elevation at the transition. Therefore,
The vertical movement of the tire at that time can be absorbed by the suspension of the vehicle, the vehicle body receives almost no impact, and the road bridge hardly generates vibration and noise.

<Embodiment 2> This embodiment is shown in FIG. 2, and the configuration of the rubber plate 9 is different from that of Embodiment 1, and the other components are the same. One side of the rubber plate 9 is formed with irregularities in which convex portions 9a and concave portions 9b entering and exiting the post-cast concrete 7 are alternately arranged in the seam longitudinal direction,
The boundary between the rubber plate 9 and the post-cast concrete 7 is an uneven line. On the opposite side of the rubber plate 9 as well, convex portions 9a and concave portions 9b which enter and exit toward the asphalt pavement 2 are formed in irregularities in which the convex portions 9a are alternately arranged in the longitudinal direction of the seam. Is rubber seal material 15
Is filled.

Therefore, even if the rubber plate 9 slightly sinks when the automobile tire shifts from the post-cast concrete 7 to the rubber plate 9, the boundary between the two is formed unevenly. Do not sink at the same time, the rest sinks after part sinks. Therefore, a sudden vertical movement of the tire can be avoided, and the impact of the deformation of the rubber plate 9 is absorbed. Even if the post-cast concrete 7 is worn and a step is formed between the post-cast concrete 7 and the rubber plate 9, the impact received by the tire is extremely small because the rubber plate 9 is soft.

When the tire is transferred from the rubber plate 9 to the post-cast concrete 7, the tire may be shaped to ride on the post-cast concrete 7 from the sunken rubber plate 9 because the rubber plate 9 is soft. Since the boundary between the two is formed unevenly, the entire width of the tire does not run at the same time, abrupt vertical movement of the tire is avoided, and the impact received by the tire is small. The transition of the tire from the rubber plate 9 to the post-cast concrete 7 is a transition from a high place to a low place when the post-cast concrete 7 wears and causes a step with the rubber plate 9. The impact received is small, and the boundary between the two is formed unevenly, so that the impact received by the tire is further reduced.

When the tire is transferred between the asphalt pavement 2 and the rubber plate 9 when the asphalt pavement 2 is worn, the impact received by the tire is extremely small as in the case of the post-cast concrete 7. Become.

<Embodiment 3> This embodiment is shown in FIG.
The configuration of Example 1 is different from that of Embodiment 1, and the other configurations are the same.

The supporting steel plate 11 is a vertical plate having a vertical plate surface and extending in the seam longitudinal direction. The rubber portion 9 extends the post-cast concrete 7 in the longitudinal direction of the seam along the asphalt pavement 2, and has a groove 16 extending in the longitudinal direction of the seam fitted on the upper portion of the supporting steel plate 11 on the lower surface as shown in FIG. Are formed with a plurality of transverse depressions 17 formed so as to cross the rubber portion 9 at intervals in the seam longitudinal direction. The rubber portion 9 is bonded to the supporting steel plate 11 at the groove 16.

A part of the post-cast concrete 7 is in contact with the asphalt pavement 2 across the rubber portion 9 at the transverse recess 17 of the rubber portion 9. For this reason, a large number of the rubber portions 9 are exposed on the road surface at intervals in the seam longitudinal direction.

Therefore, when the asphalt pavement 2 is worn and a step is formed between the asphalt pavement 2 and the post-cast concrete 7, the tire of the automobile is moved simultaneously from the asphalt pavement 2 to the post-cast concrete 7, and the entire width of the tire is simultaneously reduced. After running partially, without running on the concrete 7, the remainder will run on the post-cast concrete 7 from the rubber portion 9, and the impact received by the tire will be small. When shifting from the post-cast concrete 7 to the asphalt pavement 2, a part of the tire first moves to the rubber portion 9, and then the remainder moves from the post-cast concrete 7 to the asphalt pavement 2. become.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a partial cross section of a road bridge joint according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a partial cross section of a road bridge joint according to a second embodiment of the present invention.

FIG. 3 is a perspective view showing a partial cross section of a road bridge joint according to a third embodiment of the present invention.

FIG. 4 is a perspective view showing a rubber portion and a supporting steel plate of the same embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Road bridge main body 2 Asphalt pavement 3 Expansion joint 4 Joint play space 5 Vertical plate 6 Sealing member 7 After-cast concrete 9 Rubber plate (rubber part) 11 Support steel plate

Claims (5)

(57) [Claims] 1. A road in which an expansion joint allowing expansion and contraction of the road bridge body is provided at a joint of the road bridge, and concrete is cast to form a road surface between the expansion joint and asphalt pavement. in the structure of the bridge joint portion, the rubber portion extending seam longitudinally between the concrete portion and the asphalt pavement is provided, the upper surface of the rubber portion forms a road surface, the rubber portion in the upper portion of the support steel plate Bonded, the supporting steel plate
A structure of a road bridge joint part, which is fixed to the concrete part by an anchor . The structure of the joint of the road bridge. 2. The structure of a road bridge joint portion according to claim 1, wherein the concrete side of the rubber portion has a convex portion and a concave portion which enter and exit toward the concrete portion alternately in the joint longitudinal direction. A structure of a road bridge joint portion, which is formed in a line with unevenness, and a boundary line between the rubber portion and the concrete portion is an uneven line. 3. The expansion and contraction of the road bridge main body at the joint of the road bridge.
An allowable expansion joint is provided, and the expansion joint and asphalt
Concrete is struck to form a road surface between
In the construction of the road bridge joint , the joint length between the concrete part and asphalt pavement
A rubber portion extending in the hand direction is provided, and the upper surface of the rubber portion is
Forms a surface, the asphalt pavement side of the rubber portion has a convex portion and concave portion and out toward the asphalt pavement is formed in an uneven alternating seams longitudinally, the convex portion Asphalt The structure of the road bridge joint portion, wherein the rubber seal material is filled in contact with the concave portion. 4. A road in which an expansion joint that allows expansion and contraction of the road bridge body is provided at a joint of the road bridge, and concrete is cast so as to form a road surface between the expansion joint and asphalt pavement. In the structure of the bridge seam portion, the concrete portion is provided with a rubber portion extending in the seam longitudinal direction along the asphalt pavement, and a part of the rubber portion is exposed on the road surface at intervals in the seam longitudinal direction. The structure of the joint of the road bridge. 5. The structure of a road bridge joint according to claim 3 , wherein the rubber portion is bonded to an upper portion of a supporting steel plate, and the supporting steel plate is fixed to the concrete portion by an anchor. The structure of the joint of the road bridge.