JP3101228B2 - Finger joint refill device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filling device for filling a gap at the tip of each finger of a finger joint installed at a joint of a bridge.

[0002]

2. Description of the Related Art The joints of bridges are expanded and contracted by the influence of temperature, the load of an automobile, and the like. Therefore, the joints of bridge girders are connected by finger joints.

As shown in FIG. 5, this finger joint has one finger joint 19a having a large number of comb-shaped fingers 20a and another finger joint 19b having a large number of comb-shaped fingers 20b. However, the fingers 20a and the fingers 20b are connected so as to be staggered, that is, staggered.

The tip 22a of the finger 20a
Then, the distal end 22b of the finger 20b enters and exits the gaps 24b and 24a between the opposing fingers, so that expansion and contraction of the bridge is allowed. More specifically, when the bridge is in an extended state, FIG.
As shown in FIG. 7, while the gaps 24b and 24a become smaller and the fingers 20a and the fingers 20b engage deeply, even if the bridge is contracted or bent, as shown in FIG. 24b and 24a
Although it becomes larger, the connection state of the bridge girder is effectively maintained.

However, when a bicycle or a pedestrian passes on the road surface of a bridge in which such a finger joint is used, when the bridge shrinks or bends and the gap 24 becomes larger, the gap 24 becomes larger. There is a danger that bicycle tires may be pinched, pedestrians may trip over, or their feet may be dropped. In addition, when a foreign substance such as a stone falls into the gap and gets caught between the gaps, there is a problem that the engagement of the fingers is hindered, and the function of the finger joint that allows the bridge to expand and contract is impaired.

Therefore, in order to solve such a problem, there have been conventionally proposed several means for packing an elastic member in the space. For example, JP-A-63-2
No. 19710, “Comb-type expansion joint for roads having a corrugated leaf spring embedded filling elastic member”, Japanese Utility Model Publication No. 3-32565, “Telescopic device for road bridge”, Japanese Utility Model Application Laid-Open No. 62-114911, “Supplementary member for finger joint” And so on.

Japanese Unexamined Patent Publication (Kokai) No. 63-219710 discloses rubber or the like between a tip end of a tooth rod (corresponding to a finger 20) and a deep part of a groove (corresponding to an insertion portion 21) between adjacent tooth rods. A trimming elastic member consisting of: is arranged, and mounting brackets provided at both ends of the trimming elastic member are attached to the distal end portion of the tooth rod and the depth of the groove between the adjacent tooth rods by using mounting bolts. It is fixed.

In Japanese Utility Model Publication No. Hei 3-32565, an elastic compensating member such as rubber is disposed between the tip of the finger and the bottom portion between the fingers (corresponding to the inner portion 23 of the insertion portion 21). The supplementary member is fixed to the tip of the finger and the bottom between the fingers by bolts.

Japanese Unexamined Utility Model Publication No. Sho 62-114911 also discloses a finger tip and a bottom of the finger interval (insertion part 2).
1), a supplementary member is disposed between
Utilizing the mounting flanges provided at both ends of this supplementary member,
It is bolted to the finger tip and the bottom of the finger spacing.

[0010]

As described above, the prior art employs means for fixing the supplementary member with bolts at the time of construction of the bridge, so that it cannot be used for existing bridges and the like, and is not removable. Is not easy, so that there is a problem that it takes time and effort at the time of cleaning and the like. Also,
Since the material uses rubber or the like, there is also a problem that durability is poor.

Further, as described above, the finger joint is used to allow the bridge to expand and contract in the bridge axis direction and to effectively maintain the connection state of the bridge girder. When moved in the direction, the finger joint cannot absorb such a force acting in the direction perpendicular to the bridge axis, and may be damaged. In particular, in a finger joint in which the width of the gap between the fingers is set to be larger than the width of each finger, when the finger joint is in an engaged state, the finger enters the gap adjacent to the finger. A certain gap is formed between the finger and the finger. For this reason, when the bridge moves in the direction perpendicular to the bridge axis due to an earthquake or the like, each finger violently collides with the opposing finger, and the impact is likely to damage the finger joint.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has an object to be used for an existing bridge or the like, and is easy to attach and detach, has a small gap, and has excellent durability. It is to provide a device.

It is still another object of the present invention to provide a compensating device that functions as a shock absorbing material for absorbing a shock generated at a finger joint during an earthquake.

[0014]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a finger joint refilling device of the present invention has a main body made of a plate-like member having an elongated U-shape in a plane, and has a straight body opposed to each other. A plurality of elastic members extending toward the arc-shaped portion of the main body are provided on each inner surface of the shape-shaped portion. Further, it is preferable that the plurality of elastic members provided on the straight portion of the main body are provided alternately. Preferably, stainless steel is used as the material of the main body and the elastic member.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to FIGS.
It will be described based on. FIG. 1 is a perspective view of a filling device 1 according to the present embodiment, and FIG. 2 is a plan view thereof. The main body 2 of the refilling device 1 is formed such that a slender plate-like member made of stainless steel having a width of about 7.5 cm and a length of about 60 cm is curved in an arc shape at the center so that the plane becomes slender U-shaped. Things. However, before being attached to the finger joint, the open end side opposite to the arc-shaped portion (arc-shaped portion 4) is formed so as to be slightly wider than the arc-shaped portion 4. Have been.

Then, a plurality of elastic members 5 extending toward the arc-shaped portion 4 of the main body 2 are protruded from each inner surface of the straight portion 3 of the main body 2. This elastic member 5 has a width 5c.
m, a plate-like member made of rectangular stainless steel having a length of about 6 cm, the upper side of which is aligned with the upper edge 6 of the straight portion 3 and one adjacent side is welded to the straight portion 3. The welded portion is formed as a base end 7 in an arc shape, slightly curved inside the main body, and projecting obliquely toward the arc-shaped portion 4 side of the main body 2. And the base end 7
Is bent in the direction of the arc-shaped portion 4 of the main body 2 to form a bent piece 8 so that the fingers can smoothly enter and exit due to the expansion and contraction of the bridge.

In the present embodiment, each straight portion 3
In addition, four elastic members 5 are provided alternately, that is, project in a staggered manner.

FIG. 3 shows the conventional finger joint 19 shown in FIG. 5 to FIG.
It is a top view which shows the state which mounted | worn. The attachment of the compensation device 1 to the finger joint 19 is performed as follows. First, the arc-shaped portion 4 is directed toward the deep portion 23 of the void portion 24,
The open end side is directed toward the tip 22 of the finger 20. Next, as described above, the main body 2 of the filling device 1 is formed such that the open end side is slightly wider than the arc-shaped portion 4. The open ends of the two straight portions 3 are pressed inward against the elastic force of the stainless steel to make the two straight portions 3 substantially parallel to each other and press-fit into the gap 24.

After mounting the refilling device 1 in this manner, the refilling device 1 uses the fingers 20 by the elastic force of the stainless steel to open the open end side of the main body 2 outward.
Will be tightly fixed to the side wall. The gap 24
When the finger 20 which has entered into the state and is sandwiched by the supplementary device 1 is likely to exit while being sandwiched by the supplementary device 1 when exiting from the gap 24,
That is, when there is a possibility that the refilling device 1 may fall out of the gap portion 24 with the retreat of the finger 20, the side wall of the finger 20 constituting the gap portion 24 may be connected to the open end of the refilling device 1. A protrusion 26 for preventing falling-off may be provided at a position adjacent to the contact portion of.

The refilling device 1 may be installed in all the gaps 24 of the finger joint 19, but is limited to only the gaps 24 on the sidewalks and roadside zones where pedestrians and bicycles pass. Is also good.

FIG. 4 shows that the finger 20 is attached to the straight portion 3
It is the figure which showed the state which goes in and out. In this figure, among the four elastic members 5 a to 5 h provided inside the two straight portions 3, 5 a and 5 b located on the most open end side of the refilling device 1 are the gap portions of the finger 20. 24, the elastic members 5c, 5d, 5e, 5f, 5g, and 5h are similarly sequentially expanded when the finger 20 further enters the back, and the finger 20 is extended. It is possible to freely enter the innermost part of the gap 24.

On the other hand, when the finger 20 retreats from the gap 24, the elastic member 5 which has been pushed and expanded on both sides by the finger 20 is replaced by 5c to 5c in FIG.
As shown in 5h, it protrudes inside the refilling device 1 and returns to the curved state. The distal end of the elastic member 5 is bent in the direction of the arc-shaped portion 4 and the bent piece 8 is formed, so that the finger 20 can smoothly enter and exit.

As described above, the replenishing device 1 according to the present embodiment has the elastic members 5 arranged in a staggered manner, thereby allowing the finger 20 to freely enter and exit the gap portion 24, and using a small number of elastic members 5. The void 24 can be effectively filled.

Also, the finger 20 which has entered the inside of the straight portion 3 is to be held between the elastic members 5 provided on the inside of the straight portion 3 from both sides. Even in the case of moving in the direction, the impact caused by the collision of the fingers is alleviated and absorbed by the elastic member 5. That is, the refilling device 1 in the present embodiment also serves as a cushioning material, and can effectively prevent the finger joint from being damaged during an earthquake or the like.

In the above embodiment, the main body 2 has a width of 7.5.
Although stainless steel having a length of about 60 cm and a length of about 60 cm was used, the present invention is not limited to this size and material. In addition, the main body 2 may be formed using a plate-shaped member having an appropriate size according to a place where the main body 2 is used, and the main body 2 may be formed using another material as long as it is a durable material. Also,
The elastic member 5 was also made of a somewhat rectangular stainless steel having a width of about 5 cm and a length of about 6 cm. However, other materials may be used as long as they are durable and have an elastic force. Protrusion is made by using an appropriate one according to the length of the part 3. Further, four elastic members 5 are provided for each of the two straight portions 3 in the above-described embodiment. However, an appropriate number of elastic members 5 may be used according to the length of the straight portion 3 and the finger joint 9 to be installed. The member 5 is selected and attached.

[0026]

As described above, the present invention is a supplementary device having a simple structure in which an elastic member is provided on a straight portion of an elongated U-shaped main body, so that it can be retrofitted to an existing finger joint. Alternatively, since attachment and detachment can be easily performed, if foreign matter such as sand or pebbles enters the gap portion after the attachment, the supplementing device can be removed and the inside can be easily cleaned.

[0027] Naturally, the original purpose of the filling device can also be achieved. That is, the inconvenience of the tire of the bicycle being caught or the pedestrian taking a foot is solved.
In addition, if the elastic members are alternately arranged, the gap can be effectively filled with a small number of elastic members. Furthermore, if the main body and the elastic members are formed using stainless steel, a durable replenishing device can be obtained. Become. Furthermore, the effect as a cushioning material that can effectively reduce and absorb the impact in the direction perpendicular to the bridge axis acting on the finger joint during an earthquake or the like can be expected.

[Brief description of the drawings]

FIG. 1 is a perspective view of a filling device according to an embodiment of the present invention.

FIG. 2 is a plan view of the filling device shown in FIG.

FIG. 3 is a plan view showing a state where the supplementary device shown in FIG. 1 is mounted on a finger joint.

FIG. 4 is a view showing a state in which a finger enters and exits the inside of the refilling device shown in FIG. 1;

FIG. 5 is an explanatory diagram of a finger joint for explaining a conventional technique.

FIG. 6 is an explanatory diagram of a finger joint for explaining a conventional technique.

FIG. 7 is an explanatory diagram of a finger joint for explaining a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Compensation device 2 Main body 3 Straight part 4 Arc-shaped part 5 Elastic member 8 Folding piece 19 Finger joint 20 Finger

Claims (3)

(57) [Claims] 1. A plurality of elastic members having a main body made of a plate-like member having a flat U-shaped flat surface, and extending toward the arc-shaped part of the main body on each of inner surfaces of straight portions facing each other of the main body. A finger joint protruding device. 2. The finger joint refilling device according to claim 1, wherein an elastic member provided on one straight portion of the main body and an elastic member provided on the other straight portion are alternately provided. 3. The finger joint refilling device according to claim 1, wherein the main body and the elastic member are made of stainless steel.