JPH033604Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a road expansion joint used for automobile roads in snowy areas.

[Prior art]

Traditionally, as one of the road expansion joints,
As shown in Publication No. 20405, metal support members having female threaded holes are embedded and fixed on both sides of the elastic joint material in the width direction to extend along the road expansion joint, thereby creating an expansion joint. The side plates of a metal holding member with a box-shaped cross section with a lid that is fixed to the road are in contact with both sides of the expansion joint material in the width direction, and the connecting bolts inserted through the side plates are attached to the sides of the expansion joint material in the width direction. Road expansion joints are known that are screwed into female threaded holes in support members. The road expansion joint having this structure has the advantage that the expansion joint material can be made thick and can be firmly attached.

[Problem that the invention attempts to solve]

However, when the above-mentioned conventional road expansion joint is used on roads in snow-covered areas, since no protective member is provided on the upper part of the elastic joint material 1, it is necessary to wrap a snow removal grader or anti-slip chain around the elastic joint material 1. When a vehicle or the like passes over a road expansion joint, the tracks or blades of the grader or the anti-slip chain may damage the elastic joint material.

In addition, the parts of road pavement that are close to the holding members are more likely to wear than other parts, and if the road pavement that is close to the holding members is worn and a recess is formed, the tip of the grader blade The road expansion joint may be damaged by hitting the upper end of the holding member and applying a large impact force. Furthermore, in the case of the conventional road expansion joint, there is a problem that the structure of the holding member is complicated and the cost is high.

[Purpose and structure of the invention] The purpose of this invention is to provide a road expansion joint for snowy areas that can advantageously solve the above-mentioned problems. A metal support member 3 having female screw holes 2 is embedded and fixed on both sides in the width direction of an elastic joint material 1 arranged so as to extend along the width direction to constitute an expansion joint material 4, and the width of the expansion joint material 4 is Side plates 6 of a metal holding member 35 fixed to the road are abutted on both sides of the direction, and a coupling bolt 7 inserted through the side plate 6 is screwed into the female threaded hole 2 of the support member 3. In the expansion joint, the holding member 5 includes a comb-shaped protection plate 8 protruding from the upper end of the side plate 6 to the upper part of the elastic joint material 1, a lower flange 9 connected to the lower part of the side plate 6, an outer surface of the side plate 6, A reinforcing/guide rib 10 is integrally provided on the upper surface of the lower flange 9.
This is a road expansion joint for snowy areas characterized by having a guide surface 11 disposed at the same level as the upper surfaces of the side plates 6 and the comb-shaped support plate 8.

〔Example〕

Next, this invention will be explained in detail using illustrated examples.

6 to 8 show a metal holding member 5 used in an embodiment of this invention, in which an inner side or A comb-shaped protection plate 8 protruding toward the elastic joint material installation side is integrally installed, and a lower flange 9 protruding outward is integrally installed at the lower end of the side plate 6, and the outer surface of the side plate 6 and the lower flange 9 A plurality of reinforcement/guide ribs 10 are integrally provided between the upper surface and the side plate at intervals in the longitudinal direction of the side plate.
It has a guide surface 11 arranged at the same level as the upper surface of the zero side plate 6 and the comb-shaped protection plate 8, and further has through holes 1 for insertion of connecting bolts in reinforcing/guide ribs 10 at both ends.
2, the side plate 6 is provided with a large number of through holes 13 for bolt insertion at intervals in the longitudinal direction of the side plate, and the lower flange 9 is provided with a large number of through holes 14 for bolt insertion and anchor bolts. Insertion holes 15 are provided at intervals in the longitudinal direction of the lower flange.

9 and 10 show an expansion joint material 4 used in an embodiment of this invention, in which an elastic joint material 1 made of rubber is provided with a hollow hole 16, an upper groove 17, and a lower groove 18. Metal supporting members 3 extending in the longitudinal direction of the elastic joint material 1 are integrally embedded and fixed on both sides of the width direction of the elastic joint material 1, and metal supporting members 3 extending in the longitudinal direction of the elastic joint material 1 are embedded and fixed at the upper and lower portions of both sides of the elastic joint material 1, and opposing flanges on the support members 3 are provided. A water stop protrusion 19 extending in the longitudinal direction of the elastic joint material is provided at a position where the elastic joint material is disposed.
are provided at regular intervals in the longitudinal direction of the support member, and grooves 2 are provided at one end and the other end of the elastic joint material 1 for fitting and connecting adjacent expansion joint materials 4 to each other.
0 and a protrusion 21 are provided.

FIG. 11 shows a metal comb-shaped support plate 22 used in an embodiment of this invention, in which a comb-shaped plate made of a steel plate has a large number of through-holes 14 for inserting bolts.
And anchor bolt insertion through holes 15 are provided at intervals in the longitudinal direction of the comb-shaped plate.

1 to 5 show a road expansion joint for snow-covered areas according to an embodiment of this invention using the holding member 5, expansion joint material 4, and comb-shaped support plate 22, and are shown along the road expansion joint. The inner surface of the side plate 6 of the holding member 5 is brought into contact with both sides in the width direction (road longitudinal direction) of the expansion joint member 4 arranged to extend along the same line, and the comb-shaped protection plate 8 of the holding member 5 is
are arranged close to the upper surface of the elastic joint filler 1, and are arranged so that the concave portion and the convex portion of the comb-shaped protection plates 8 on both sides face each other, and are further inserted through the side plate 6 and into the female threaded hole 2 of the support member 3. The expansion joint material 4 and the holding member 5 are tightly coupled by the screwed coupling bolt 7.

Holding members 5 adjacent to each other in the longitudinal direction of road expansion joints
are tightened and connected by connecting bolts 23 inserted across the reinforcing/guide ribs 10 at the ends, and the comb-shaped support plate 22 is disposed across the lower surface of the lower flange 9 of the adjacent holding member 5, and is attached to the comb-shaped support plate 22. The plate 22 and the lower flange of the adjacent holding member 5 are tightened and fixed by fixing bolts 24, and furthermore, the concave portion and the convex portion of the comb-shaped support plates 8 on both sides are arranged so as to face each other.

The expansion joint material 4 is placed on the comb-shaped support plates 8 on both sides, and the vertical screw rod 26 of the L-shaped anchor bolt 25 is inserted through the lower flange 9 and the comb-shaped support plate 22, and is screwed into the lower part of the vertical screw rod 26. The lower nut 27 that has been tightened is brought into contact with the comb-shaped support plate 22 and fixed by welding, and the upper nut 28 screwed onto the upper part of the vertical screw rod 26 is tightened so that the anchor bolt 25 is attached to the holding member 5 and the comb-shaped support plate 22. is fixed.

A side portion of the road expansion joint is disposed on the retraction step portion 30 provided on the upper surface of the end portion of the road body 29, and a large number of anchor bolts 25 in the road expansion joint are arranged.
The horizontal rods 31 are fixed by welding to anchoring reinforcing bars 32 that are embedded and fixed in the road body 29, and are made of low compressive strength formwork material 33 made of synthetic resin foam.
A reinforcing reinforcing bar 34 is inserted between the end faces of the road main body 29 and further extends in the longitudinal direction of the road expansion joint.
is fixed to the anchor bolt 25 and the locking reinforcing bar 32 by welding, and a fixing/repairing material 35 such as concrete, asphalt, or synthetic resin mortar is cast on the lead-in step 30.

As in the above embodiment, if the comb-shaped support plate 22 is brought into contact with the lower surface of the lower flange 9 of the adjacent holding member 5 and fixed by tightening with the fixing bolt 24, the end portion of the adjacent holding member 5 is leveled. They can be easily connected without causing any difference. Furthermore, by making the protection plates 8 comb-shaped and making the concave and convex portions of the comb-shaped protection plates 8 on both sides in the width direction of the road expansion joint face each other, the gap between the comb-shaped protection plates 8 on both sides is made into a zigzag shape. Vehicle running properties of the expansion joint can be improved.

When implementing this invention, the lower nut 27 screwed onto the vertical screw rod 26 may be fixed to both the comb-shaped support plate 22 and the vertical screw rod 26 by welding. Further, the holding member 5 is made of cast iron, for example.

[Effect of idea]

According to this invention, a metal support member 3 having female screw holes 2 on both sides of the elastic joint material 1 in the width direction
are embedded and fixed to form an expansion joint material 4, side plates 6 of metal holding members 5 fixed to the road are abutted on both sides of the expansion joint material 4 in the width direction, and the metal holding members 5 are inserted through the side plates 6. In the road expansion joint in which the coupling bolt 7 is screwed into the female screw hole 2 of the support member 3, the holding member 5 is provided with a comb-shaped protection plate 8 that projects from the upper end of the side plate 6 to the upper part of the elastic joint material 1. The comb-shaped protective plate 8 can prevent the tracks and blades of the grader or the non-slip chain of the automobile from coming into contact with the elastic joint material 1. It is possible to prevent the elastic joint material 1 from being damaged by the crawler tracks, blades, or anti-slip chain. 9, and reinforcing/guide ribs 1 integrally provided on the outer surface of the side plate 6 and the upper surface of the lower flange 9.
0, so its reinforcing and guide rib 1
0 can reinforce the holding member 5, and the reinforcing/guide rib 10 has a guide surface 1 disposed on the same level as the upper surface of the side plate 6 and the comb-shaped protection plate 8.
1, even if the road pavement in the vicinity of the holding member 5 is worn and a recess is formed, the guide surface 11 guides the tip of the grader blade to the side plate 6 and the comb-shaped protection plate 8. The reinforcing/guide rib 10 that can be guided toward the upper surface and thus reinforces the holding member 5 is used to prevent the blade of the grader from colliding with the upper end of the holding member 5 from the side. As a result, the safety of the road expansion joint can be ensured.Furthermore, the holding member 5 of this invention has a simpler structure and can be manufactured at a lower cost than the holding member of the conventional road expansion joint. Effects can be obtained.

[Brief explanation of drawings]

The drawings show one embodiment of this invention, in which Fig. 1 is a longitudinal side view showing the installation state of a road expansion joint for snowy areas, Fig. 2 is a plan view showing a part of the road expansion joint, FIG. 3 is an enlarged cross-sectional view taken along the line A-A in FIG. 2, FIG. 4 is an enlarged cross-sectional view taken along the line B-B in FIG.
Fig. 5 is a front view showing the vicinity of the connecting portion of adjacent holding members in the road expansion joint, Fig. 6 is a partially cutaway plan view of the holding member used in the embodiment of this invention, and Fig. 7 is a side view thereof. , FIG. 8 is a sectional view taken along the line C-C in FIG. 6, and FIG. 9 is a partially cutaway front view of the expansion joint material used in the embodiment of this invention.
FIG. 10 is a sectional view taken along the line DD in FIG. 9, and FIG. 11 is a partially cutaway plan view of a comb-shaped support plate used in an embodiment of this invention. In the figure, 1 is an elastic joint material, 2 is a female screw hole,
3 is a metal support member, 4 is an expansion joint material, 5 is a metal holding member, 6 is a side plate, 7 is a coupling bolt, 8 is a comb-shaped protection plate, 9 is a lower flange, 10 is a reinforcement/guide rib, 11 is a guide surface, 22 is a comb-shaped support plate,
23 is a connecting bolt, 24 is a fixing bolt, 25
29 is an anchor bolt, 29 is a road body, 30 is a lead-in step, and 32 is a tie reinforcing bar.

Claims (1)

[Scope of utility model registration request] A metal support member 3 having internally threaded holes 2 is embedded and fixed on both sides in the width direction of an elastic joint material 1 arranged to extend along a road expansion joint to constitute an expansion joint material 4, and the expansion joint On both sides of the material 4 in the width direction, there are metal holding members 5 fixed to the road.
In the road expansion joint, in which a side plate 6 is abutted, and a coupling bolt 7 inserted through the side plate 6 is screwed into the female screw hole 2 of the support member 3, the holding member 5 is attached to the upper end of the side plate 6. A comb-shaped protection plate 8 protrudes from the top of the elastic joint material 1, a lower flange 9 connected to the lower part of the side plate 6, and reinforcing/guide ribs 10 integrally provided on the outer surface of the side plate 6 and the upper surface of the lower flange 9. and its reinforcing and guide ribs 1
0 is a road expansion joint for snowy areas characterized by having a guide surface 11 arranged at the same level as the upper surface of the side plate 6 and the comb-shaped support plate 8.