JPS625044Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a vertical protection and reinforcement member that protects and strengthens a joint member or a concrete part at a road joint.

At road joints, we used joints in which steel toothed plates were interlocked with some play and concrete was cast behind them, and rubber plates were bridged over the gaps in the joints and buried in the concrete. Various types of joints, such as joints fixed to anchor bars, have been constructed, but usually the concrete part on the back is more susceptible to being hit by vehicles than joints made of steel or rubber. It wears out quickly and creates a step between the joint member and the concrete part. Therefore, this difference in level deteriorates the running performance of the vehicle, and the impact when the vehicle passes over the difference in level can cause cracks in the concrete, early damage to the joint members, and even noise.
There were problems with vibrations and other road pollution. In addition, in road bridges built in snowy areas, vehicles often have chains attached to their wheels or use spiked tires, and the number of times snowplows drive is increased. There is a problem in that the chains and spiked tires increase the impact when a vehicle passes by, and the scraper of the snowplow collides with the joint member, damaging the joint member.

On the other hand, as disclosed in Japanese Utility Model Application Publication No. 56-33303, there has been a proposal to provide a flat plate, that is, a horizontal protection member, in the concrete portion of the road joint. However, in the case of this proposal, it is necessary to attach an anchor to the protective member in order to prevent it from peeling off during use, and the protective member is slightly bent by the wheel load of the vehicle, resulting in poor running performance. It is a shame that it not only causes damage, but also is not very durable.

In view of this point, the present invention provides a protection reinforcing member with a simple structure that can protect joint members and concrete parts at road joints, and eliminates the above-mentioned conventional problems. That is, the protection reinforcement member according to the present invention is a vertical plate-like body with a substantially vertical plate surface, and a horizontal part that matches the height of the road surface is formed at the front of the upper end. Next, a sloped part is formed at the rear of the upper end that slopes downward to the rear, and the front end of the horizontal part faces the back of the joint member and comes into contact with the through line extending in the longitudinal direction of the road joint. It is characterized in that it is connected together and placed in the concrete part of the road joint.

That is, the action of this protection reinforcing member is as follows.

To move a vehicle tire from a horizontal part onto a joint member and reduce rutting on the concrete back part of the joint member.

Even if the concrete portion is worn out, the scraper of the tire or snowplow moves from the inclined portion to the horizontal portion to the joint member, thereby preventing impact from being applied to the vehicle or the joint member.

Road joints are provided with a large number of intersecting reinforcing bars, such as distribution bars in the bridge axis direction, stirrup bars in the vertical direction, and main bars in the longitudinal direction of the joint, and it is difficult to provide a plate-like member separate from these reinforcing bars due to space considerations. Although it is very difficult to do so, the protective reinforcing member is placed in contact with and connected to the through-bar, so while the through-bar is connected to the existing reinforcing bar, the protective reinforcing member is placed on top of the through-bar. This makes it easy to construct protective reinforcing members at road joints without causing interference with existing reinforcing bars.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the protection reinforcing member 1 is a plate-shaped body with a plate surface 2 vertical, the front end surface 3 is substantially vertical, and the upper end surface is longer than the upper end of the front end surface 3. Horizontal portion 4 reaching approximately the center in the direction
and a sloped portion 5 that slopes downwardly toward the rear following the horizontal portion 4.

The protective reinforcing member 1 is made of a relatively rigid material such as steel or plastic, and has a thickness of, for example, about 6 to 30 mm, and a height of, for example, about 70 mm to 30 mm.
The length is about 150 mm and the length is about 200 to 300 mm, and its installation state is shown in FIGS. 2 and 3.
That is, the protective reinforcing member 1 is installed in a post-cast concrete portion 8 at a road joint 7 with its longitudinal direction oriented in the bridge length direction, and the horizontal portion 4 is made at the same height as the road surface 9. The orientation of the protective reinforcement member 1 does not need to completely match the bridge length direction;
It may also be oriented obliquely. The pitch P of the protection reinforcement member 1 in the road width direction is about 30 to 400 mm,
In this embodiment, the interval W between each protection reinforcing member 1 is set narrower than the tire width of a general vehicle.

To explain the joint 7 above, 10,
Reference numeral 10 denotes a joint member made of steel, and a corrugated surface 12 is formed on the side of the joint clearance 11. Both joint members 10, 10 are disposed oppositely in a meshing state with a corrugated joint clearance 13, and together with a seal plate 14. It is fixed to the post-cast concrete part 8 with anchor bolts 15. Note that the post-cast concrete portion 8 is a cutout step portion 1 formed at the end of the opposing floor slabs 16, 16.
It consists of 7 concrete poured. 1
8 is a U-shaped stirrup bar, 19 is an inverted U-shaped reinforcing bar, 20 is a through bar extending in the longitudinal direction of the joint, 2
1 is pavement.

In this example, a minute gap S of about 5 to 20 mm is formed between the front end surface 3 of the protection reinforcement member 1 and the rear end surface of the joint member 10, but the front end surface 3 is in contact with the joint member 10 or It may be fixed. Further, although the inclined portion 5 of the protection reinforcing member 1 is formed into a curved surface with a predetermined curvature, it may be formed into a straight line. Further, the length of the horizontal portion 4 can be appropriately set within the range of 5 to 200 mm. In addition, in FIG. 2, 22 is a sealing material, and 23 is a covering material.

At the time of construction, as shown in FIG.
Put it in. Then, a setter 25 having a height corresponding to the thickness of the joint member 10 and the seal plate 14 and a width corresponding to the width of the joint member 10 is attached to the lower surface of the horizontal rod 24. Both ends of the horizontal rod 24 are installed on the upper surfaces of the pavements 21, 21 on both sides of the cutout steps 17, 17. In this case, when the pavement 21 is not applied, a pillow material having a height comparable to the thickness of the pavement is placed on the upper surface of the floor slab, and the horizontal beams 24 are placed on the pillow material. Next, the anchor bolt 15 is connected to the setter 25 with a nut, and the protective reinforcing member 1 is lifted up to the horizontal part 4.
is set at the same height as the road surface 9, and in this state, the contact points of the protection reinforcement member 1, the through reinforcement 20, the stirrup reinforcement 18, and the reinforcement reinforcement 19 are connected by welding or the like, and the protection reinforcement member 1 is held. That is, the protection reinforcing member 1 has a through-stripe 20 connected to the stirrup muscle 18.
It is supported by abutment on top of and connected to this thread 20. Incidentally, during this connection, the protective reinforcing member 1 may be temporarily fixed to the horizontal rod 24 with a wire or the like. After that, cutout step part 1
Concrete is poured into 7 to form a post-cast concrete portion 8, and the protective reinforcing member 1 and anchor bolt 15 are fixed. Then, the horizontal rod 24 and setter 25 are removed, and the seal plate 14 and joint member 10 are fixed to the anchor bolt 15 with nuts. Next, the sealing material 22 and the covering material 23 are filled onto the U-shaped expandable portion at the center of the sealing plate 14, and the construction is completed. Note that the protection reinforcing member 1 may be attached after the setter 25 is suspended from the horizontal rod 24 and placed at a predetermined position.

In the above-mentioned joint 7, since the horizontal part 4 of the protection reinforcing member 1 is aligned with the road surface 9, the tires of the vehicle often pass over the horizontal part 4, and the post-cast concrete part 8 is used for each protection reinforcement. Part 1
There is almost no wear on the parts located between the horizontal parts 4. Therefore, the occurrence of a level difference at the boundary between the joint member 10 and the post-cast concrete part 8 is prevented, and the horizontal part 4 is at the same height as the joint member 10, so that a good vehicle can be achieved. Runnability can be maintained for a long period of time. In particular, in this embodiment, since the interval between the protection reinforcing members 1 is narrower than the tire width, the tire always passes over the horizontal part 4 of the protection reinforcing member 1, and the joint member 10 and the post-cast concrete part 8 are connected to each other. Rutting of the post-cast concrete part 8 at the boundary part hardly occurs.

On the other hand, the post-cast concrete portion 8 may wear on and behind the sloped portion 5 of the protection reinforcement member 1, which may lead to exposure of the slope portion 5. The boundary line with poured concrete part 8 is finger-shaped (wavy)
and the vehicle's tires are on the slope 5.
Since there is a smooth transition from the upper part to the horizontal part 4, there is no adverse effect on the running performance of the vehicle.

In addition, snowplows often run on road bridges built in snowy regions, but even if the sloped portion 5 of the protection reinforcement member 1 is exposed, the grader of the snowplow will slide on the sloped portion 5. A large impact is not applied to the protection reinforcing member 1 and the joint member 10, and damage to the members 1 and 10 is prevented.

In addition, since the gap S is provided between the front end surface 3 of the protection reinforcement member 1 and the joint member 10,
Even if the blade of the snowplow hits the protective reinforcing member 1, the impact at that time is not transmitted to the joint member 10,
Damage to the joint member 10 is prevented. In the above embodiment, concrete is interposed in the gap S, but a cushion material such as rubber may be interposed in the gap S. In that case, a cushion material may be fixed to the front end surface 3 of the protection reinforcing member 1 in advance.

In addition to the type shown in the above embodiments, the type of the joint is, for example, a horizontal part with a corrugated end face on the side of the seam gap 11 at the upper end of the vertical board to configure the joint member. A type of joint that is installed facing each other with a gap, a type of joint that has a pair of corrugated end plates formed by bending vertical plate surfaces in a wave shape in the road width direction, and a type of joint that has a pair of corrugated end plates that are installed opposite each other with a rubber plate. Various known joints such as rubber joints for connection can be used.

Next, other embodiments of the protection reinforcing member will be described.

The protective reinforcing member 26 shown in FIG.
This type has a sloped part 2 following a horizontal part 27.
8 is descending in a straight line.

The protection reinforcing member 34 shown in FIG. 6 has a rectangular cutout in the lower part of the plate material to form a concave portion 35 that opens downward, and includes a horizontal portion 36 and an inclined portion 37.
has a configuration similar to that shown in FIG.

The protection reinforcing member 42 shown in FIG. 7 is formed into an L-shape with its front end portion 43 projecting downward, and the horizontal portion 44 and the inclined portion 45 have the same structure as that shown in FIG. 5. be.

The protection reinforcing member 46 shown in FIG. 8 has a lower surface 47 that gradually becomes higher toward the rear, and a horizontal portion 48 and an inclined portion 49 have the same structure as that shown in FIG. 5. In this example, the joint member 5
The reinforcement member 46 and the anchor 51 can be welded to each other by placing the reinforcement 20 between the anchor 51 protruding from the back surface of the housing 0 and the inclined bottom surface 47.

The protection reinforcing member 52 shown in FIG. 9 has a shorter length in the bridge length direction than those of the embodiments described above, and has a circular hole 53 formed in the center, and a horizontal part 54 and an inclined part 55. It is similar to that shown in FIG.

The protective reinforcing members of the types shown in FIGS. 1 and 5 to 8 may also be shortened in length in the bridge length direction, similar to that shown in FIG. 9. Further, as a modification of the protection reinforcing member 38 shown in FIG. 9, the lower part of the circular hole 39 may be opened downward.

Further, the angle of inclination of the inclined portion of each protection reinforcing member with respect to the horizontal plane is 10 to 35 degrees, preferably 15 to 20 degrees.

The types of road bridges on which protection members are installed include, in addition to steel bridges with deck slabs 16 formed on steel girders as in the previous embodiment, reinforced concrete girder bridges, prestressed concrete girder bridges, and steel bridges. There are slab bridges, etc.

In addition, the concrete part in which the protective member is disposed includes not only cement concrete but also other hardening materials such as asphalt concrete, synthetic resin, resin mortar, and resin concrete.

As described above, according to the present invention, a horizontal part is provided at the upper end of the front part of the protection reinforcing member to match the height of the road surface, and following the horizontal part, an inclined part that slopes downward to the rear is provided at the upper end of the rear part. , it is possible to prevent abrasion of the surface of the concrete part on the horizontal part, and even if the sloped part is exposed, general vehicles and snowplows can smoothly move on the sloped part, reducing the impact when vehicles pass. Furthermore, it has the excellent effect of preventing gouging of concrete parts and damage to joint members by snowplows.Furthermore, this protective reinforcement member has a simple structure and is easy to manufacture. be.

In particular, since the protective reinforcing member of the present invention is of a vertical type with the board surface approximately vertical, the lower part is deeply embedded in the concrete part, which solves the conventional problem of peeling off from the concrete part. Since the through-bars can be connected to the existing reinforcing bars and then connected on top of the through-bars, construction is easy, and the protective reinforcing member can be solidified in a relatively short period of time without requiring any skill. It has the excellent effect of providing high load-bearing strength.

[Brief explanation of the drawing]

The drawings illustrate the embodiment of the present invention, and FIG. 1 is a perspective view of a protective reinforcement member, FIG. 2 is a cross-sectional view of a road joint in the bridge length direction, FIG. 3 is a plan view of the same, and FIG. 4 is a construction example. Figures similar to Figure 2 showing the state, and Figures 5 to 9 are side views showing other embodiments of the protection reinforcing member. 1, 26, 34, 42, 46, 52... Protection reinforcement member, 2... Plate surface, 3... Front end surface, 4, 27,
36, 44, 48, 54...horizontal part, 5, 28,
37, 45, 49, 55... Inclined part, 7... Joint, 8... Post-cast concrete part, 9... Road surface, 10... Joint member, 11... Joint gap, 16... Floor slab, 21 ……pavement.

Claims (1)

[Scope of utility model registration request] A horizontal portion that matches the height of the road surface is formed at the front of the upper end of the plate whose surface is approximately vertical, and a sloped portion that slopes downward to the rear is formed following the horizontal portion at the rear of the upper end of the plate. The front end of the horizontal part faces the back of the joint member and is joined by contacting the through bar extending in the longitudinal direction of the road joint, and is a protection reinforcement member for the road joint expansion and contraction device installed in the concrete part of the road joint. .