JPS6033912A - Dust-proof water stopping apparatus of expansion joint part of bridge beam - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dust-proof and water-stopping device for an expansion joint in a bridge, and more specifically, it completely prevents dust, rainwater, etc. from entering through the gap between left and right joint members that constitute an expansion joint for a bridge. The present invention relates to a dust-proofing and water-stopping device for expansion joints in bridges, which is capable of preventing dust and water from entering the expansion joints of bridges.

Generally, as shown in Fig. 1, joint parts 2 of bridges 1 such as road bridges and elevated bridges have a flat surface as shown in Fig. 2 in order to absorb the expansion and contraction of the bridge 1 caused by seasonal temperature changes. A bridge expansion joint 3 formed into a comb-like shape is provided.

Then, below the joint portion 2 of the bridge 1 mentioned above, that is, below the expansion joint 3, dust, rainwater, etc. that enter through the gap A of the left and right joint members 3a and 3b that make up this expansion joint 3 fall directly downward. Dust-proof and drainage measures are installed to prevent this.

However, in the conventional dust-proof drainage means, as shown in FIG. It is constructed by attaching drainage guide plates 7 to the drain guide plates 5b so as to face each other.

However, the conventional dust prevention and drainage means configured as described above has the following problems. That is, (1) During rainfall, particularly during heavy rainfall, the drainage receiving groove body 6 and the drain pipe (not shown) connected thereto are clogged by the earth and sand flowing from the gap A, and muddy water flows into the drainage receiving groove body 6.
There is a risk of overflowing and causing secondary disasters such as surrounding pollution.

(2) The mounting parts of the drainage guide plate 7 and the drainage groove body 6 are corroded, and there is a risk that they may fall and cause secondary disasters.

(3) Dust, mud, etc. overflowing from the drainage guide plate 7 and the drainage groove body 6 accumulate on the support part 9 that supports the bridge 1 on the pier 8, causing the support part 9 to corrode at an early stage, There is a risk of causing serious secondary disasters such as bridge collapse accidents.

Therefore, recently, in order to solve the above-mentioned problem, Fig. 4 (al.
(bl (As shown in C1, a back-up material 10 is provided between each of the side plates 5a and 5b provided below the left and right joint parts 'fJf3a and 3b constituting the expansion joint 3.
A structure in which the space between the expansion joint 3 and the expansion joint 3 is filled with caulking material 11 has been developed.

However, this structure also has the following problems. That is, (1) When each bridge 1 stretches in the summer, the caulking material 11 is compressed, and as a result, the caulking material 11 overflows onto the surface of the bridge 1 from the gap A of the left and right joint members 3a and 3b, causing a dangerous situation. It becomes an obstacle.

(2) When each bridge 1 contracts in the winter, the volume of the caulking material 11 that overflowed in the summer, or the caulking material 11 filled in the space between the backup material 10 and the expansion joint 3 When it rains, the amount of muddy water that flows into the gap overflows, causing secondary disasters such as pollution of the surrounding area, and this gap becomes clogged with dirt, dust, etc., and in extreme cases, it can cause damage to moving vehicles. There is a danger that the bank-up material 10, caulking material 11, etc. may fall due to pressure or vibration, causing secondary damage.

The present invention was developed as a result of studies to solve the above-mentioned problems.

Therefore, it is an object of the present invention to provide an excellent expansion joint for bridges that can reliably prevent dust, rainwater, etc. from entering through the gap between the left and right joint members constituting the bridge expansion joint, regardless of seasonal temperature changes. The purpose of this company is to provide a dust-proof and water-stopping device for parts of the industry.

That is, in the present invention, a rubber-like elastic body with a reinforcing layer embedded therein is formed into a band shape, and the long side of the dust-proof and water-stopping body is formed by forming an attachment part to a bridge. While attaching it to the bridge, the upper surface of this dust-proof and water-stopping body is brought into close contact with the lower surface of the left and right joint members constituting the bridge expansion joint, and the other longitudinal side of this dust-proofing and water-stopping body is folded downward, and this folded end is The gist of this invention is a dust-proof and water-stopping device for an expansion joint in a bridge, which is characterized in that it is attached to the other bridge via a bracket.

Hereinafter, the present invention will be specifically described by way of examples with reference to the drawings.

FIG. 5 is a cross-sectional view showing a dust-proof and water-stop device for an expansion joint in a bridge according to an embodiment of the present invention.

In the figure, E is a dust-proof and water-stopping device for an expansion joint in a bridge according to an embodiment of the present invention, in which a rubber-like elastic body with embedded reinforcing FftK is formed into a band shape, and a bridge 1 is attached to the longitudinal side 50a of the rubber-like elastic body. The attachment portion 51 of the dust-proof and water-stopping body 50 formed with the attachment portion 51 is attached to one side plate 5a of the side plates 5 provided below the left and right joint members 3a and 3b forming the bridge expansion joint 3. , the upper surface 50c of this dust-proof and water-stop body 50 is connected to the lower surface 3 of the left and right joint members 3a and 3b.
c, and then fold the other longitudinal side 50b of this dust-proof and water-stopping body 50 downward, and fold this folded end 52,
It is configured by being attached to the other side plate 5b of the side plate 5 via a bracket 20.

Therefore, even if the bridge 1 expands or contracts due to seasonal temperature changes, the dust-proof and water-stopping body 50 can be
This expansion and contraction can be automatically followed, and one surface 50c of the dust-proof and water-stop body 50 will not be separated from the lower surface 3c of the left and right joint members 3a and 3h forming the bridge expansion joint 3. As a result, the gap A between the left and right joint members 3a and 3b constituting the bridge expansion joint 3 can be completely closed by the dust-proof and water-stop body 50 at all times.

To further explain this structure, in the present embodiment, a retainer 53 having a cross-sectional, inverted shape is integrally attached to the mounting portion 51 of the dust-proof and water-stopping body 50, as shown in the figure. The dust-proof and water-stop body 50 can be attached to the side plate 5a by bolts 41 and nuts 41a through the lower legs 53a.

Further, as shown in the figure, the upper leg portion 53b of the retainer 53 is inserted into the lower part of the dust-proof and water-stop body 50 and is integrally attached by vulcanization adhesive or the like, and is connected to the folded portion 50d of the dust-proof and water-stop body 50. Together, the upper surface 5 of the dust-proof and water-stopping body 50
0c on the lower surface 3c of the left and right joint members 3a and 3b,
This allows for close contact.

In the present embodiment, the bracket 20 is formed into a cross-curved shape, and its lower leg portion 20a is integrally attached to the side i5b via a packing 21 with a bolt 42 and a nut 42a. Cage, upper leg 2
The folded end 52 of the dust-proof and water-stopping body 50 is integrally attached to the tip of the dust-proof and water-stopping body 50 with a bolt 43 and a nut 43a via the packing 21 and washer 30.

The rubber-like elastic body constituting the dust-proof and water-stopping body 50 includes:
It is desirable to use a material with excellent fatigue resistance, abrasion resistance, durability, weather resistance, etc., such as chloroprene rubber or a synthetic rubber mainly composed of chloroprene rubber, and the reinforcing layer K may include a rubberized nylon cord, It is desirable to use a material with flexibility and good tensile strength, such as polyester cord.

Since the present invention is constructed as described above, even if the bridge expands and contracts due to temperature changes due to seasonal changes, the dust-proof and water-stopping body can automatically follow this expansion and contraction through its folded parts. The upper surface of the dust-proof and water-stop body will not be separated from the lower surface of the left and right joint members that constitute the bridge expansion joint. As a result, the gap between the left and right joint members constituting the bridge expansion joint can be completely closed by the dust-proof and water-stop body at all times. Therefore, (1) it is possible to reliably prevent foreign matter such as dirt, dust, rainwater, or ice and snow from entering through the gap between the left and right joint members that make up the bridge expansion joint, regardless of seasonal temperature changes. This makes it possible to reliably prevent the aforementioned secondary disasters caused by the intrusion and fall of these foreign objects.

(2) Noise caused by running vehicles, especially impact sounds generated when vehicles pass over expansion joints for bridges, can be significantly alleviated and soundproofed.

(3) The dust-proof and water-blocking body, which constitutes the main part of this device, is made of a rubber-like elastic material with a reinforcing layer embedded in it, so it can withstand long-term use without corrosion, and is also resistant to bridge vibrations caused by vehicle running. It is fully compatible and provides excellent dust-proofing and water-proofing effects.

[Brief explanation of the drawing]

Figure 1 is a side view explanatory diagram of a general road bridge, Figure 2 is a partially cutaway plan view explanatory diagram showing an expansion joint for a bridge, Figures 3 and 4 (al (bl (C) are respectively FIG. 5 is a side view explanatory view showing a conventional dust-proofing and water-stopping means for an expansion joint, and FIG. 5 is a cross-sectional view showing a dust-proofing and water-stopping device for an expansion joint in a bridge according to an embodiment of the present invention.・Bridge 3...Bridge expansion joints 3a, 3b - Left and right joint members 3c of bridge expansion joints...
・Bottom surface 20 of expansion joint for bridge...Bracket 50...Dust-proof water stop body 50a ・・Longitudinal side - side 50b of dust-proof water stop body ・・Other longitudinal side 50c of dust-proof water stop body ・・Top surface 51 of dust-proof water stop body ... Attachment part 52 of the dust-proof and water-stopping body ... Folded end K of the dust-proof and water-stopping body ... Reinforcement layer agent Patent attorney Small note - Patent attorney Kensho Noguchi Patent attorney Kazuhiko Saishita Figure 1 M40 (a )

Claims (1)

[Claims] A dust-proof and water-stopping body is made by forming a rubber-like elastic body with a reinforcing layer embedded into a band shape, and forming a part on the longitudinal side of the body for attaching it to the bridge. At the same time,
The upper surface of this dustproof water stopper is brought into close contact with the lower surface of the left and right joint members constituting the bridge expansion joint, and the other longitudinal side of this dustproof waterstop body is folded back downward, and this folded end is
A dust-proof and water-stopping device for an expansion joint in a bridge, characterized in that it is attached to the other bridge via a bracket 1.