JPH0216805B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to road joint members, bridges,
It is used in the field of road bridges such as elevated roads.

(Prior Art) One of the conventionally known road joint members is a so-called finger joint member. This joint member is
A pair of face plates with comb-shaped sides on the road joint gap side are each fixed to the upper end of the web plate (vertical plate), a low plate is fixed to the lower end of the web plate, and a backfill material is provided on the back of the web plate to form the paved surface. It is composed of

In addition, as other joint members,
- As stated in Publication No. 119804, on the premise that the pavement surface will wear out, a pair of belly plates that extend in the width direction of the end of the deck slab and are embedded under the road surface, and a pair of belly plates that intersect with each belly plate Some guide boards are constructed of a plurality of guide boards arranged at intervals in the width direction and embedded under the road surface. In other words, by embedding it under the road surface, this prevents the joint member from being damaged by the plow of a snowplow, and when the pavement surface is worn out, the slope at the rear of the guide plate guides the plow forward. This prevents damage to the joint member.

(Problems to be Solved by the Invention) However, in the case of the above-mentioned finger joint member, the comb-shape processing of the face plate and the welding of each member are troublesome, and it is often necessary to correct welding distortion. Since it takes time and effort, it has to be relatively expensive. In addition, when constructing at road joints, when pouring backfilling material such as concrete behind the web plate, the corner between the face plate and the web plate appears to be a blind spot, making it difficult to fill the backfill. It is difficult for the material to wrap around the bottom surface of the face plate, and there is a problem of decreased durability due to insufficient backfilling material.

In addition, even after construction, if the pavement surface (top surface of the backfill material) on the back of the face plate is worn out due to rutting, etc., the face plate will form a straight line over the entire length of the road width between it and this pavement surface. This creates long bumps, worsens vehicle drivability, and causes road traffic pollution such as noise and vibration.

On the other hand, in the case of a joint member that is embedded under the road surface, it is constructed with the premise that the road surface will wear out, and therefore, it is impossible to prevent this road surface wear. In addition, during construction, a paving layer will also be installed on top of the play area.
At that time, in order to prevent the paving material from leaking under the play area,
It is necessary to fill the zigzag-shaped gap formed by alternately overlapping guide plates on both sides.
Construction is difficult. Moreover, after the construction, the problem of the pavement sinking due to the above-mentioned play due to the wheel load remains.

That is, an object of the present invention is to provide an interlocking type joint member that can be easily manufactured without requiring comb-shaped processing like conventional face plates, and that can be used while being exposed on the road surface. In addition, the workability of the backfilling material is improved, and abrasion of the paved surface can be prevented.

(Means for Solving the Problems) In order to solve these problems, the present invention provides a pair of vertical plates which are arranged opposite each other with a gap and whose upper ends are exposed to the road surface, and which are made to cross each of the vertical plates. By combining with a plurality of road surface members that protrude forward and backward in the longitudinal direction of the road and are exposed on the road surface, an interlocking type joint member is constructed, and its manufacturability is improved.
This makes it possible to improve workability and vehicle drivability.

In other words, the specific means for this purpose is as follows: a pair of vertical plates installed parallel to the longitudinal direction of the road joint with a gap between them; A plurality of road surface members are arranged to intersect with this vertical plate and are exposed on the road surface so that a front protruding part and a rear protruding part are formed, and both of the vertical plates are connected to seal the gap. The vertical plates are provided with a plurality of fitting recesses opened at their upper ends and spaced apart from each other in the longitudinal direction of the vertical plates, and the vertical plates are configured such that the upper ends are exposed to the road surface. The height of the upper end is made to match the height of the road surface, and each of the above-mentioned road surface members is provided with an anchor part extending downward on a rear protrusion part that protrudes from the vertical plate to the opposite side of the play area. The intermediate portion of the road surface member in the longitudinal direction is fitted into the fitting recess of the vertical plate so that the height of the upper surface of this intermediate portion matches the height of the upper end of the vertical plate, and the clearance is greater than that of one of the vertical plates. The front protrusion of each road surface member that protrudes to the side is provided so as to face an engaged state with joint play between the front protrusions of each road surface member that protrudes toward the clearance side from the other vertical plate. This is a road joint member.

In this case, the height of the upper end of the vertical board matches the height of the road surface, but "matching" in the present invention is not limited to complete matching, but means substantially matching. In other words, during construction, it is not a problem that there is a slight difference in height between the top of the vertical board and the top surface of the backfill material cast on the back of the vertical board. The upper end may be exposed to the road surface and constitute the road surface. This also applies to the height of the upper surface of the intermediate portion of the road member, which is made to match the height of the upper end of the vertical board.

(Function) In the above-mentioned joint member, the combination of the vertical plate and the road surface member forms a wave shape (unevenness) on both the free space side of the vertical plate and the opposite side.
There is no need to create a corrugated shape by machining.

Furthermore, when pouring the backfill material, a vertical plate provided with its upper end height matching the road surface height serves as a template to prevent the backfill material from leaking into the clearance space. When looking at the joint member from above, the blind spot is only below the rear protrusion of the road surface member, and both sides of this rear protrusion are not closed, so the backfill material is applied from both sides of the rear protrusion. It will go around below this rearward protrusion. Further, the anchor portion extending downward from the rearward protruding portion of the road surface member contributes to fixing the joint member to the backfill material.

Then, on the play side, a wave-shaped joint play is formed by the engagement of the front protrusion from one vertical plate and the front protrusion from the other vertical plate,
To prevent tires of a vehicle passing through a road joint from falling into the gap.

On the other hand, the boundary between the joint member and the backfill material that appears on the road surface has a wavy shape between the vertical plate and the rear protrusion of the road surface member, making it difficult for vehicle tires to pass over the rear protrusion of the road surface member. This reduces wear on the backfill material between adjacent rear protrusions, that is, on the pavement surface. In addition, the top edge of the vertical plate matches the road surface height, and the backfill material is protected from the gap side by this vertical plate, so even if excessive wheel load is applied, the top corner on the gap side will not chip. This will be prevented.

Furthermore, as mentioned above, the fact that the boundary between the joint member and the backfill material that appears on the road surface becomes wavy means that the backfill material is slightly worn and the upper surface of the backfill material, that is, the pavement surface and the joint. This means that even if a step is created between the parts and the parts, there is no significant deterioration in the running performance of the vehicle.

In other words, when a vehicle tire passes over a joint member, a part of the tire in the width direction rides on a road surface member that intersects with one vertical plate, and when it reaches the position of this one vertical plate, the remaining part is It will ride on this vertical board, and then it will move from the front protrusion of the road surface member to the front protrusion of the road surface member that intersects with the other vertical board, and a part of the width direction will be reversed from the other vertical board. The remaining part descends from the road surface member to the backfill material, so there is no sudden vertical movement when passing over the joint member, and there is no large impact on the vehicle.

In addition, if the boundary between the joint member and the backfill material is straight, if a step is created on the boundary due to wear of the backfill material, the entire width of the tire will ride on the joint member at the same time, and the entire width of the tire will simultaneously run up from the joint member. This means that the entire tire will move up and down rapidly.
This will cause a large impact to the vehicle.

(Effect of the Invention) Therefore, according to the present invention, there is provided a pair of vertical plates whose upper ends are made to match the height of the road surface and are exposed to the road surface, and which intersect with the vertical plates so that the upper surface of the intermediate portion is connected to the upper end of the vertical plates. By combining a plurality of road surface members that are made to match the height and are exposed on the road surface, it is possible to obtain an interlocking type joint member that is used while being exposed on the road surface, and has a comb shape like a conventional finger joint member. There is no need for machining to make the joint member, and it is easy to manufacture, and the backfill material has good workability and is easy to construct.Moreover, the road surface member itself has an anchor part, so it is easy to manufacture. The installation stability and load-bearing strength can be improved. In addition, a wave-shaped joint play is formed between the vertical plate and the road surface member, and the boundary between the joint member and the backfill material that appears on the road surface is wavy, so this backfill material is prevented from wearing out. At the same time, the running performance of the vehicle can be improved, and the good running performance of the vehicle can be maintained even if the backfilling material is worn out.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

Example 1 In the joint member 1 of this example shown in FIG. 1, 2 and 2 are a pair of vertical plates provided parallel to the longitudinal direction of the road joint with a gap 3 between them at the road joint, and 4 is the above-mentioned vertical plate. A U-shaped sealing member 5 whose both sides are fixed to the lower portions of the opposing surfaces of both vertical plates 2, 2 and closes and seals the clearance 3, projects from the front and rear of the vertical plate 2 in the longitudinal direction of the road, respectively. This is a road surface member that is disposed to intersect with the upper part of each vertical board 2 and to be exposed to the road surface so that a front protrusion 7 and a rear protrusion 6 are formed.

Both vertical plates 2, 2 are provided with fitting recesses 12 that open at the upper ends at a predetermined interval S (more than twice the width W of the road surface member 5) in the longitudinal direction, as shown in FIG. They are erected so that the height of each upper end matches the height of the road surface so that the upper end of each is exposed to the road surface.

On the other hand, each of the road surface members 5 has a rectangular cross section, and the horizontal upper surface 9 at the intermediate portion in the longitudinal direction has the same height as the upper end height of the vertical board 2 (height matches the road surface height). Thus, this intermediate portion fits into the fitting recess 12 of the vertical plate 2, and one of the vertical plates 2
The front protruding portion 7 of each road surface member 5 that protrudes further toward the play space 3 side has a joint play 14 between the front protrusion portions 7, 7 of each road surface member 5 that protrudes toward the play space 3 side from the other vertical plate 2. It is installed so that it faces a state of meshing.

The road surface member 5 has a front inclined surface 10 and a rear inclined surface 11 formed on its upper surface, respectively, downwardly inclined forward and backward from the horizontal upper surface 9. Furthermore, a locking portion 1 that extends downward and locks onto a surface of the vertical plate 2 on the play area 3 side is provided on a front protrusion 7 of the road surface member 5 that protrudes from the vertical plate 2 toward the play area 3 side.
3 is provided. On the other hand, an anchor portion 8 extending downward is provided at the rear end of a rear protruding portion 6 of the road surface member 5 that protrudes from the vertical plate 2 to the opposite side of the play space 3.

Note that the road surface member 5 may not have the front inclined surface 10 or the rear inclined surface 11, but may have a horizontal upper surface 9 extending to the front end or rear end of the road surface member. The fact that the front inclined surface and the rear inclined surface may be omitted in this way also applies to the embodiments shown in FIGS. 3 to 6, which will be described later.

Further, although the vertical plate 2 and the road surface member 5 are fixed at their fitting portions by welding, they may be coupled by simply fitting them together.

Furthermore, an anchor bar 15 projects from the vertical plate 2 on the side opposite to the play space 3.

In the case of this example, the anchor portion 8 of the road surface member 5 extends to approximately the same height as the lower end of the vertical board 2, or close thereto.In other words, the vertical board 2 and the road surface member 5 are at approximately the same height, The member 1 can be kept stable on a road surface using the vertical plates 2, 2 and the anchor portion 8 of the road member 5 as legs, and the vertical plates 2 and the road member 5 are assembled in a factory or the like and transported to the construction site. Furthermore, even when the vertical board 2 and the road surface member 5 are assembled and left on the road surface for a while at the construction site, accidents such as the joint member 1 falling over and the road surface member 5 coming off can be avoided. Does not occur. When the anchor portion 8 is made shorter than the vertical plate 2, a spacer may be separately interposed between the anchor portion 8 and the road surface.

A method of constructing the joint member 1 of this example at a road joint will be explained based on FIG. 2.

The joint member 1 is a notch step 1 at the end of the road.
6 and 16, are placed or suspended from above so that the heights of the upper end of the vertical board 2 and the horizontal upper surface 9 of the middle part of the road surface member 5 match the road surface height,
The anchor portion 8 of the road surface member 5 and the anchor reinforcement 15 of the vertical plate 2 are appropriately connected to the U-shaped stirrup reinforcement 17, the through reinforcement 18 in the road width direction, the distribution reinforcement, etc., and backfilled into the notch step portion 16. It is attached to the road joint by pouring the material 19.

In this case, the vertical plate 2 functions as a template for casting the backfilling material, and there is no need to provide a separate template. Further, since the road surface members 5 are provided at intervals in the road width direction, and there is nothing to cover the road surface between the road surface members 5, 5, the backfilling material 19 is applied to the road surface members 5.
The compaction device (vibrator) for the backfill material 19 can be inserted between each of the road surface members 5, without the problem of insufficient filling of the backfill material 19. Sufficient compaction can be performed. In Figure 2, 20 is a floor slab, 2
1 is pavement.

In the joint shown in Fig. 2, the joint play 14 opened to the road surface is in the form of a wave.
Since the vehicle runs with its tires always in contact with the road surface from the front protrusion 7 protruding from one vertical plate 2 to the protrusion 7 protruding from the other vertical plate 2, the vehicle has good running performance.

In addition, since the end surface of the backfilling material 19 on the clearance side is covered with the vertical plate 2 from its lower end to its upper end,
The vertical plate 2 prevents the upper end corner of the backfill material 19 from chipping due to wheel loads. Since the boundary between the joint member side, which is composed of the vertical plate 2 and the rear protruding part 6 of the road surface member 5, and the backfill material 19 side is wavy in the road width direction, the backfill material 1
9 is prevented from wearing, and this backfilling material 1
Even if the road surface member 9 is slightly worn and a step is formed at the boundary, the vehicle will not receive a large impact from the tires when passing over the joint member 1, and furthermore, the road surface member 5 is provided with the rear inclined portion 11. Therefore, the tires ride smoothly on the road surface member 5, and the running performance of the vehicle is not significantly hindered.

Further, in the road surface member 5, the anchor portion 8 is connected to the backfill material 1.
Since it is deeply embedded in the front projection 9, the installation stability is high, and it does not rise from the road surface due to bridge vibrations or wheel loads applied to the front protrusion 7.

Embodiment 2 The joint member 31 shown in FIG. 3 of this embodiment is a modification of the road surface member 32, and the vertical plate 2 and the seal member 4 have the same structure as in the first embodiment.

In the road surface member 32 of this example, the front protrusion 35 is the same as in the first embodiment, but the rear protrusion 36 is the same as in the first embodiment.
It differs from That is, the rear protruding portion 36 has a small protruding amount, extends downward with the anchor portion 33 in contact with the vertical plate 2, and connects the locking portion 13 and the anchor portion 3.
The vertical plate 2 is held between the members 3 and 3, and by this holding, the stability of the assembled state of the vertical plate 2 and the road surface member 32 is improved. In this example, since the overall length of the road surface member 32 is shortened, the length of the horizontal upper surface 34 is also shortened.

Embodiment 3 The joint member 41 shown in FIG. 4 of this embodiment is also an example in which the structure of the road surface member 42 is different from that of the embodiment 1.

That is, in the road surface member 42 of this example, the front protrusion 45 does not have a locking part, and the rear protrusion 46 extends downward with the anchor part 43 in contact with the vertical plate 2. By tilting the rear surface rearward, it gradually expands downward, and is intended to prevent the anchor portion 43 from slipping out of the backfilling material 19. Further, the length of the horizontal upper surface 44 is shortened.

In addition, in the case of this example, no locking part is provided, but
It may also be provided as in the previous embodiment.

Embodiment 4 A joint member 51 shown in FIG. 5 of this embodiment is characterized by a road surface member 52 similar to the previous embodiments 2 and 3.

That is, the road surface member 52 of this example has a front protrusion similar to that of the first embodiment, and the rear protrusion 49 extends the rear inclined surface 53 rearward relatively long.
The height difference between the horizontal upper surface 54 of No. 2 and the rear end of the rear inclined surface 53 is made large to prevent the rear end of the rear inclined surface 53 from being exposed even if the backfilling material is heavily worn. It is made of reinforcing steel and connected to the base.

Embodiment 5 A joint member 56 shown in FIG. 6 of this embodiment has a front surface 59 of an anchor portion 58 provided on a rear protrusion 60 of a road surface member 57 tilted forward and downward to gradually expand downward. This is intended to prevent the anchor portion 58 from slipping out of the backfilling material.

In addition, each of the road surface members of Examples 1 to 5 has a shape in which the anchor portion 8 in the road surface member 5 shown in FIG. 1 is gradually enlarged downward like the anchor portion 43 of the road surface member 42 shown in FIG. base, horizontal part,
The joint member may be constructed by combining the anchor portion and the locking portion.

Embodiment 6 The joint member 61 shown in the assembled state in FIG. 7 of this embodiment is characterized by the arrangement of road surface members.

That is, a pair of fitting recesses 63, 63, which are opened with a relatively narrow interval _S1 in the vertical plate 62, are arranged in the road width direction with a relatively wide interval _S2 ,
A road surface member 64 is fitted into each fitting recess 63 .

In addition, in the present invention, when a joint member is applied to a diagonal bridge, the road surface member is normally arranged parallel to the bridge axis direction, but in a diagonal bridge, a straight bridge, a curved bridge, etc. In some cases, the road surface members are arranged diagonally to the bridge axis.

Further, when providing a rear inclined surface on a road surface member, it may be a linear slope when viewed from the side, or a curved slope that is downwardly sloped with a predetermined curvature.

In addition, if the sealing member connects a pair of vertical plates to close a gap, its cross-sectional shape may be appropriately changed to a desired shape such as a V-shape or a rectangular shape other than the U-shape of the above embodiment. be able to.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the joint member of Example 1;
FIG. 2 is a perspective view showing a road joint part constructed with a joint member of the same example cut in the bridge length direction, and FIGS. 3 to 6 are perspective views of joint members of Examples 2 to 5, respectively. FIG. 7 is a plan view showing the joint member of Example 6 in an assembled state. 1, 31, 41, 51, 56, 61... Joint member, 2, 62... Vertical plate, 3... Play space, 4...
...Seal member, 5, 32, 42, 52, 57, 6
4... Road surface member, 6, 36, 46, 49, 60...
... Rear protrusion, 7, 35, 45... Front protrusion,
8, 33, 43, 55, 58... anchor part,
9, 34, 44, 54...Horizontal top surface, 12, 63
...Mating recess, 14...Joint play.

Claims (1)

[Scope of Claims] 1. A pair of vertical plates provided parallel to the longitudinal direction of the road joint with a gap between them at the road joint, and a front projection of each of the vertical plates that protrudes forward and backward in the longitudinal direction of the road. a plurality of road surface members that intersect with this vertical plate and are exposed on the road surface so as to form a rear projection and a rear protrusion; and a seal member that connects both of the vertical plates and seals the gap. Therefore, both the vertical plates are provided with a plurality of fitting recesses opened at their upper ends and spaced apart in the longitudinal direction of the vertical plates, and the height of the upper ends is adjusted such that the upper ends are exposed to the road surface. Each of the road surface members is provided with an anchor portion extending downward on a rear protruding portion that protrudes from the vertical plate to the opposite side of the play area. The intermediate portion in the front-rear direction is fitted into the fitting recess of the vertical plate so that the height of the upper surface of this intermediate portion matches the height of the upper end of the vertical plate, and protrudes toward the play side from one of the vertical plates. A road joint characterized in that the front projections of each road surface member protrude more toward the play side than the other vertical plate, and are provided so as to face a meshed state with joint play between the front projections of each road surface member that protrudes more toward the play side than the other vertical plate. Element.