JPS62117902A - Non-drain type seal apparatus of bridge flexible joint - 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 [Object of the Invention] (Industrial Field of Application) The present invention relates to a non-drainage type sealing device for a comb-shaped expansion joint installed in a gap between opposing ends of a deck slab, such as a road bridge.

(Prior art) Conventionally, as a water stop device for a comb-shaped expansion joint device installed at the ends of opposing deck slabs, a water catch plate is provided on a web plate on the lower surface of one face plate, and a water catch plate is provided on the lower surface of one face plate. A structure in which a drainage gutter was installed on the wear plate at the bottom was commonly used. However, this type of water stop device can only be installed on a small scale, and it gets buried quickly, causing road water to leak to the top of the pier.
There were disadvantages such as destroying livestock, rusting shoes, and freezing of running water, which damaged livestock.

Therefore, as shown in FIG.
The rack is made of stainless steel or steel plate and is passed between the web plates b and 5 between the lower surfaces of the web plates b and 5. A sealing material d and a back-up material e such as foam rubber are placed between the plate C and the face plate a. It is constructed by packing it in layers (Japanese Utility Model Publication No. 56-87503).

(Problems to be Solved by the Invention) However, when making existing finger joints non-drainage, including these proposals, it is necessary to fill the existing finger joints with elastic sealing material from above, which requires long hours of transportation. Regulations are required, which impedes vehicular traffic, and if the elastic sealing material deteriorates, it is difficult to remove.

The present invention aims to solve these problems and to provide a non-drainage type sealing device for a bridge expansion joint that is easy to construct.

[Structure of the Invention] (Means for Solving the Problems) The above-mentioned problem lies in the fact that the constituent elements of the invention are the comb-shaped expansion joints provided at the ends of the opposite deck slabs, and the installation numbers on the end faces of the opposite deck slab ends. A cover rubber that is long in the road width direction and has a pressed part that is pressed by a press plate and an elastic part that is located below the face plate, and a long cover rubber that is long in the road width direction that presses the cover rubber against the face plate. It consists of a pressure plate of a length, a cavity formed inside, and an expandable Zaport that expands and contracts in the width direction of the gap, which has a restoring force when air enters when contracted in a vacuum state, and has an air circulation hole that allows air to enter and exit the cavity. The cover rubber, pressing plate, and elastic support are as follows: The elastic part of the cover rubber is placed on the lower surface of the face plate 1, and the pressed part is placed along the web plate, and the suppressing plate is applied to the pressed part of the cover rubber. A bridge characterized in that air in a cavity is extracted from an air circulation hole, and air from an extensible support that is in a vacuum-contracted state is introduced, and the board is pressed by an expansion force that attempts to return to its original shape. This problem can be solved by using a non-drainage type sealing device for the expansion joint.

(Example) Next, embodiments of the present invention will be described based on the drawings.

Fig. 1 is a perspective view of the cover rubber, Fig. 2 is a perspective view of the suppression plate, Fig. 3 is a partially cutaway perspective view of the telescopic 1-nabot, and Fig. 4 is a perspective view of the cover rubber.
The figure is a perspective view of the telescopic support when it is contracted.

The cover rubber 1 consists of a pressed part 2.2 that is pressed by a web plate provided on the end face of the opposing floor slab end, and an elastic part 3 located on the lower surface of the face plate, and is formed to be elongated in the width direction of the passage. has been done.

In this embodiment, the extensible portion 3 is formed in a wave shape so as to be able to adapt to the expansion and contraction of the floor slab.

The suppression plate 4 is a flat plate that can press the pressed portion 2 of the cover rubber 1 against the web plate, and is elongated in the road width direction and is formed of a steel plate, a plastic plate, or the like.

5 is a bent portion formed as necessary.

The telescopic Zaport 6 is formed into a lantern-like shape with repeated protrusions 7 and concavities 8 in the width direction of the gap between the ends of the floor slab facing the outside, and has a cavity 9 inside. The gap width direction is contracted, and when the vacuum state is released, air enters the cavity and an expansion force acts to return the gap width direction to its original state. 10 is an air circulation hole that communicates the cavity with the outside, and 11 is a pin.

FIG. 5 shows an embodiment in which the present invention is applied to a normal comb-type expansion joint, in which 12 is a face plate, 13 is a web plate, 14 is a bracket provided as necessary to facilitate the work, 15 is a play room.

Specifically, first, the cover rubber 1 is positioned in the play space 15 so that the elastic part 3 is on the lower surface of the face plate and the pressed part 2.2 is along the opposing web plate 13.13. Apply pressure plate 4.4 to Afterwards,
The air in the cavity 9 is sucked through the air circulation hole 10 by a vacuum pump or the like, and the air circulation hole 10 is closed by a bottle 11. The air circulation hole 10 is closed by 1 inch. Multiple locations in the width direction.

Thereafter, the bottle 11 of the air circulation hole 10 is pulled out to release the vacuum state of the cavity 9 of the telescopic part boat 6, and the whole is expanded. When air enters the cavity and expands, the telescopic support 6 presses the pressing plate 4.4, the pressing plate 4.4 presses the pressed portion 2.2 of the cover rubber 1, and the telescopic support 6 and the pressing plate 4.4
and cover rubber 1 are installed in the clearance, and the whole constitutes a non-drainage type sealing device.

In this embodiment, a bracket 14.14 is provided on the web plate 13.13, and a bent portion 5 is provided on the press plate 4.4.
．． 5 is provided, making the work easier.

(Effects of the Invention) Since the present invention is made as described above, it has the following effects.

■Since the cover rubber consists of a stretchable part and a pressed part, the stretchable part makes it possible to make the comb-shaped expansion joint non-drainage.

■The pressed portion of the cover rubber is brought into close contact with the web plate by a pressing plate, and the pressing plate can be pressed by an elastic support, making it possible to keep the play space in a sealed state as a whole.

■Since the telescopic support is initially contracted in a vacuum state, it is easy to insert it into the gap, and its restoring force is used to set the cover rubber, pressure plate, and telescopic support in a non-drainage position. Installation work is easy.

■The telescopic support is hollow and allows air to circulate, allowing it to follow the expansion and contraction of the bridge.

■This device can be installed using existing comb-shaped extensions! Since the joints can be installed from the side of the ground cover, there is no need to restrict traffic.

■In addition, even if the cover rubber has deteriorated, the cover rubber can be attached using the restoring force of the elastic support.
! Since it is based on wearing force, the cover rubber can be removed by contracting the elastic support, making it easy to replace.

[Brief explanation of drawings]

Figure 1 is a perspective view of the cover rubber, Figure 2 is a perspective view of the pressure plate, Figure 3 is a partially cutaway perspective view of the telescopic support, and Figure 4 is when the telescopic support shown in Figure 3 is contracted. Perspective view, 5th
The figure is a cross-sectional view showing a non-drainage type sealing device installed at the ends of opposing deck slabs, and FIG. 6 is a diagram of a conventional example. In the drawing, 1 is a cover rubber, 2 is a pressed part, 3 is an elastic part, 4 is a press plate, 6 is an elastic support, 9 is a cavity, 10
is an air circulation hole.

Claims (1)

[Claims] A comb-shaped expansion joint provided at opposing ends of the floor slab has a pressed part that is pressed by a press plate to a web plate provided on the end face of the opposing end of the floor slab, and an extensible part located below the face plate. A cover rubber that is long in the direction of the road width, a pressing plate that is long in the road width direction that presses the cover rubber against the face plate, a cavity formed inside, and an air circulation hole that allows air to enter and exit the cavity. It consists of an elastic support that expands and contracts in the width direction of the free space and has a restoring force when air enters when contracted in a vacuum state.The cover rubber, pressing plate, and elastic support are used to press the elastic part of the cover rubber against the bottom surface of the face plate. The part is placed along the web plate, and a press plate is applied to the pressed part of the cover rubber, and the press plate is used to extract the air from the cavity through the air circulation hole, and the air from the elastic support, which is in a vacuum-contracted state, enters to return to its original state. A non-drainage type sealing device for a bridge expansion joint, characterized in that the device is attached to a gap by being pressed by an expansion force that attempts to return.