JPH072646Y2 - Expansion joint for bridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The invention of the present application relates to an expansion joint used for connecting bridges such as road bridges, that is, an expansion joint for bridges.

[Conventional technology]

An example of this type of expansion joint for bridges is shown in FIG.

As shown in the same figure, this one has a base plate (1) fixedly arranged at the end edges of bridge members (b) facing each other with a certain interval, and the base plates (1) (1). An elastic seal member (3) for preventing water such as rainwater from falling from one another, and an elastic seal member (a) having a constant thickness between the hanging members (11) of the base plate (1) ( 3) is installed and the end of the elastic seal member (3) is adhered to the hanging member (11).

Therefore, bridge members (b) (b) due to changes in outside temperature
It becomes possible to change the mutual distance, and even if this distance changes, the water accumulated between the bridge members (b) and (b) leaks from between the bridge member (b) and the drooping member (11). There is no such thing.

However, in this structure, as the distance between the bridge members (b) and (b) changes, the adhesive joint between the elastic seal member (3) and the hanging member (11) comes off in a relatively short period of time, and as a result, However, there is a problem that water leakage cannot be avoided.

On the other hand, as an expansion joint for bridges, there is a type shown in FIG.

As shown in the figure, this is an elastic seal member (3).
A thin plate-shaped seal rubber (24) is attached to the lower surface of the plate, and the hanging piece (25) is attached to a thin plate material (so-called flat bar) (1
4) and the hanging member (11) so as to be sandwiched in a watertight state.

However, this expansion joint for bridge also has the same problem as the former, and it is impossible to avoid water leakage for a long period of time.

[Problems to be solved by the device]

Therefore, an object of the invention of this application is to provide an expansion joint for a bridge in which water such as rainwater accumulated between the bridge members does not leak downward for a long period of time.

[Means for Solving the Problems]

Therefore, in the invention of this application, the base plate (1) fixedly arranged at the end edges of the bridge members (b) facing each other at a constant interval and the base plates (1) and (1) are connected to each other. An extension / contraction for bridge of a type that has a water blocking seal member (2) fixed in a connecting manner, and prevents water leakage between the bridge members (b) and (b) by the water blocking seal member (2). In the joint, each base plate (1) is composed of a horizontal member (10) and a hanging member (11) projecting from the lower surface of the horizontal member (10) to form a water blocking seal member (2) in a thin plate shape. A water stop seal member (2) is provided along with a drooping member (11) (11) provided on opposite sides of the drooping members (11) and (11), and the drooping member (11) is continuous with the drooping member (20). The folding part (21) attached to the lower end or the other surface side, and the hanging part (2
0) (20) and horizontal parts (22) connected to each other and attached to the horizontal members (10) and (10), wherein the bridge members (b) and (b) in the horizontal part (22) are connected to each other. A slack portion (23) is provided between the slack portion (23) and the bridge member (b).
The watertight seal member (2) except for is provided with a reinforcing plate (4) attached to the outer surface portion.

[Action]

Since the device of this application is configured as described above, it has the following effects.

When the distance between them changes as the bridge members (b) and (b) expand and contract, a force acts to deform the waterproof seal member (2), but the horizontal portion (22), In the hanging portion (20) and the folded portion (21), the reinforcing plate (4) supported by the bridge member (b) prevents the deformation, and only the slack portion (23) is deformed.

That is, the horizontal portion (22), the hanging portion (20), and the folded portion (21) described above are kept attached to the hanging member (11) of the base plate (1).

〔Example〕

The configuration of the present invention will be described below with reference to the drawings shown as an embodiment.

The expansion joint for bridges of this embodiment, as shown in FIG.
It is composed of a base plate (1), a waterproof seal member (2), a reinforcing plate (4), and a guide plate (13), and is shown installed between the bridge members (b) and (b). In the state, as shown in the same figure, the horizontal member (10) is fixed by the reinforcing bar arrangement (50) and the auxiliary reinforcing bar arrangement (51) through the guide plate (13) in such a manner that the upper surface thereof coincides with the road surface. Be punished.

As shown in FIG. 1, the base plate (1) includes a horizontal member (10) and a hanging member (11) protruding from the lower surface thereof.
The horizontal member (10) is provided with finger portions (12) extending at one end. In use, a guide plate (13) is fixed to the base plate (1) on the side opposite to the finger portions (12).

As shown in FIGS. 1 and 2, the waterproof seal member (2) is formed in a thin plate shape, and the hanging member (11) (1
1) A hanging portion (20) attached to the mutually facing surface side, and a folding portion continuous with the hanging portion (20) and extending from the lower end of the hanging member (11) to the other surface side. (21) and the hanging parts (20) (20) are connected to each other and horizontal members (10) (1
0) and a horizontal part (22) attached to it.
The bridge member (b) in the horizontal portion (22)
(B) A slack portion (23) having a V-shaped cross section is provided at a portion located between the slack portions. The slack portion (23) may have a U-shaped cross section or a corrugated cross section.

Further, as shown in the figure, the reinforcing plate (4) is attached to the outer surface portion of the waterproof seal member (2) excluding the slack portion (23), and as shown in FIG. Division (21)
By embedding and supporting the portion attached to the end portion of the bridge member (b), the deformation of the portion of the waterproof seal member (2) other than the slack portion (23) is prevented.

Incidentally, at least the hanging part (20) of the part excluding the slack part (23) of the water blocking seal member (2) may be fixed to the base plate (1).

When the expansion joint for bridge is adopted, the base plate (1) (1) is connected to the bridge member (b) by the guide plate (13), the reinforcing bar reinforcement (50) and the auxiliary reinforcing bar reinforcement (51) as described above.
After being temporarily fixed to, the integral body of the waterproof seal member (2) and the reinforcing plate (4) is fitted from the side (the front in FIG. 1),
The construction is completed when the post-punching material is filled in this state.

That is, this expansion joint for bridges has the effect of facilitating the attachment of the water blocking seal member (2) in addition to the water leakage prevention effect described in the section of the effect, and as a result, the time required for construction can be shortened. Will be possible.

[Advantages of the Invention] Since the present invention has the above-described configuration, it has the following effects.

Even if the mutual distances change due to the expansion and contraction of the bridge members (b) and (b), the horizontal portion (22), the hanging portion (20) and the folded portion (21) still have the hanging member (11) of the base plate (1). ), The horizontal part (22) and hanging part (2
It is very difficult for water such as rainwater to leak from between 0) and the folded portion (21) and the hanging member (11).

Further, since the folded-back portion (21) is continuous with the hanging portion (20) and is additionally provided from the lower end of the hanging member (11) to the other surface side, the hanging portion (20) should be Even if water invades between the hanging member (11), water leakage will be prevented at the turnback portion (21).

That is, in this expansion joint for bridges, the prevention of water leakage becomes reliable.

[Brief description of drawings]

FIG. 1 is an enlarged perspective view showing a state in which the expansion joint for bridge according to the invention of this application is installed in a road bridge. FIG. 2 is a perspective view of a waterproof seal member and a reinforcing plate attached thereto. 3 and 4 are cross-sectional views showing a state in which a conventional expansion joint for bridges is installed in a road bridge (b) …… Bridge member, (1) …… Base plate (2) …… Water stop sealing member , (4) …… Reinforcement plate (10) …… Horizontal member, (11) …… Hanging member (20) …… Hanging part, (21) …… Folding part (22) …… Horizontal part, (23)… ... slack part

Claims (5)

[Scope of utility model registration request] 1. A mode in which a base plate (1) fixedly arranged at each end edge of a bridge member (b) facing each other with a constant interval and the base plates (1) (1) are connected to each other. A water blocking seal member (2) fixedly attached to the bridge member (b) by the water blocking seal member (2).
(B) In a bridge expansion joint of a type that prevents water leakage from each other, each base plate (1) is composed of a horizontal member (10) and a hanging member (11) projecting from a lower surface thereof, The water blocking seal member (2) is formed in a thin plate shape, and the water blocking seal member (2) is provided with a hanging part (20) attached to the surface of the hanging members (11) (11) facing each other. A folded-back portion (21) that is continuous with the hanging portion (20) and is additionally provided from the lower end of the hanging member (11) to the other surface side, and connects the hanging portions (20) (20) to each other. A horizontal portion (22) attached to the horizontal member (10) (10), and a slack portion (23) between the bridge members (b) and (b) in the horizontal portion (22), Furthermore, the slack part (23) is supported by the bridge member (b) and
An expansion joint for bridges, characterized by comprising a reinforcing plate (4) attached to the outer surface of the water sealing member (2) excluding the above. 2. The expansion joint for a bridge according to claim 1, wherein the reinforcing plate (4) is attached to the water sealing member (2). 3. The water blocking seal member (2), at least a hanging portion (20) of the portion excluding the slack portion (23) is fixed to the base plate (1).
Expansion joint for bridge described. 4. The expansion joint for a bridge according to claim 1, wherein the slack portion (23) has a substantially V-shaped or U-shaped cross-section. 5. The expansion joint for a bridge according to claim 1 or 2, wherein the slack portion (23) has a wavy cross-sectional shape.