CN212582411U

CN212582411U - Sealing structure for bridge contraction joint

Info

Publication number: CN212582411U
Application number: CN202020547373.1U
Authority: CN
Inventors: 王福州; 王志; 李中梁; 王韩; 陈奕霏
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2021-02-23
Anticipated expiration: 2030-04-14

Abstract

The utility model relates to a seal structure for bridge contraction joint, seal structure is used for the expansion joint department of bridge, include from up creep rubber layer, sealing strip and the clamp plate that sets gradually down, creep rubber layer, sealing strip and clamp plate are even as an organic whole through the bridge slab of clamp bolt with the bridge, the creep rubber layer sets up the bridge slab upper surface in the expansion joint both sides respectively, the flexible band body that the sealing strip was made for modified polyolefin, sealing strip include the seal section of both sides and the redundant section at middle part, both sides the seal section sets up respectively in the creep rubber layer top of expansion joint both sides, two the clamp plate sets up respectively in two seal section tops. The utility model aims to solve or alleviate traditional rubber waterstop at least and take place after the rubber ageing sclerosis scurries the problem of water, provide a seal structure for bridge contraction joint.

Description

Sealing structure for bridge contraction joint

Technical Field

The utility model relates to an expansion joint sealing device technical field, concretely relates to bridge seal structure for contraction joint.

Background

After the bridge runs for a period of time, water leakage often occurs at the position of the expansion joint, and the main reason is that the rubber waterstop of the expansion joint can be accelerated to age when the high temperature of asphalt concrete on the road surface reaches 80 degrees in summer. For rubber, the operating temperature should be 40-50 ° for a durable seal. Therefore, the traditional rubber water stop used at the expansion joint is easy to age at high temperature, so that the elasticity of rubber is reduced, and the hardness is increased.

The sealing principle of the traditional rubber water stop is that the rubber water stop is tightly pressed on a base surface of concrete through a pressing plate, rubber generates elastic deformation and generates sealing specific pressure, and the deformation of the rubber fills a tiny trough of the base surface. And after the rubber is aged and hardened, the elastic deformation amount is small and is not enough to fill the wave troughs of the base surface. Once the rubber is locally damaged, rain water enters a gap between the rubber and the base surface, resulting in water channeling.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome not enough among the prior art, solve or alleviate traditional rubber waterstop's rubber aging hardening at least and take place to scurry the problem of water, provide a seal structure for bridge contraction joint.

In order to realize the above purpose, the utility model discloses a technical scheme is:

a sealing structure for bridge contraction joints is used at expansion joints of bridges and comprises a creep rubber layer, a sealing strip and a pressing plate which are sequentially arranged from bottom to top, wherein the creep rubber layer, the sealing strip and the pressing plate are connected with bridge plates of the bridges into a whole through pressing bolts;

the creep rubber layers are respectively arranged on the upper surfaces of the bridge plates on the two sides of the expansion joint;

the sealing strip is a flexible strip body made of modified polyolefin, the sealing strip comprises sealing sections on two sides and a redundant section in the middle, and the sealing sections on the two sides are respectively arranged above creep rubber layers on the two sides of the expansion joint;

the two pressing plates are respectively arranged above the two sealing sections.

In order to further realize the utility model discloses, can prefer following technical scheme for use:

preferably, the lower surface of the sealing tape is hot-melted with a polyester fiber layer.

Preferably, the width value of the redundant segment is larger than that of the expansion joint.

Preferably, the lower surface of the pressure plate is vulcanized with a rubber layer.

Preferably, the lower surface of the pressing plate is serrated.

Through the technical scheme, the beneficial effects of the utility model are that:

the utility model discloses a creep rubber layer is the colloid of pitch and rubber, still has good thixotropic property at low temperature, has fine adhesion force simultaneously with the bridge plate concrete.

The sealing tape is made of modified polyolefin, and a polyester fiber layer is hot-melted on the lower side of the sealing tape. The high-temperature and low-temperature resistant sealing tape is not easy to age, meanwhile, the polyester fiber layer on the lower side can be anchored in the creep rubber layer to form labyrinth sealing, wave troughs on the base surface of the bridge plate are eliminated, no-gap bonding is formed, the elongation of the sealing tape reaches 800%, and the sealing tape can be well adapted to the change of displacement.

Drawings

Fig. 1 is a schematic structural view of a sealing structure for bridge contraction joints of the present invention;

fig. 2 is a top view of fig. 1 of a sealing structure for bridge contraction joints according to the present invention;

fig. 3 is a structural cross-sectional view of a sealing tape of a sealing structure for bridge contraction joints according to the present invention;

FIG. 4 is a cross-sectional view of the pressing plate of the sealing structure for bridge contraction joint according to the present invention;

wherein, 1-bridge plate; 2-a creep rubber layer; 3-sealing tape; 4, pressing a plate; 5-a polyester fiber layer; 6-a rubber layer; 301-a sealing section; 302-redundant segment.

Detailed Description

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1:

as shown in fig. 1-4, a sealing structure for bridge contraction joints, which is used at the expansion joints of bridges, is characterized by comprising a creep rubber layer 2, a sealing strip 3 and a pressure plate 4 which are sequentially arranged from bottom to top, wherein the creep rubber layer 2, the sealing strip 3 and the pressure plate 4 are connected with a bridge plate 1 of the bridge into a whole through compression bolts;

the creep rubber layers 2 are respectively arranged on the upper surfaces of the bridge plates 1 on the two sides of the expansion joint, the creep rubber layers 2 are colloid formed by mixing asphalt and rubber, and still have good thixotropic property at low temperature and good adhesive force with the concrete of the bridge plates 1;

the sealing strip 3 is a flexible strip body made of modified polyolefin, the sealing strip 3 comprises sealing sections 301 on two sides and a redundant section 302 in the middle, the sealing sections 301 on two sides are respectively arranged above the creep rubber layers 2 on two sides of the expansion joint, the width value of the redundant section 302 is larger than that of the expansion joint, and the polyester fiber layer 5 is hot-melted on the lower surface of the sealing strip 3; the sealing tape 3 is resistant to high and low temperatures and not easy to age, meanwhile, the polyester fiber layer 5 on the lower side can be anchored into the creep rubber layer 2 to form labyrinth seal, wave troughs on the base surface of the bridge plate 1 are eliminated, no-gap bonding is formed, the elongation of the sealing tape 3 reaches 800%, and the sealing tape can well adapt to the change of displacement;

the two pressing plates 4 are respectively arranged above the two sealing sections 301, the rubber layers 6 are vulcanized on the lower surfaces of the pressing plates 4, and the lower surfaces of the pressing plates 4 are in a sawtooth shape.

The lower end of the compression bolt sequentially penetrates through the pressure plate 4, the sealing belt 3 and the creep rubber layer 2 and is fixed in the bridge plate 1.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the principles of the present invention.

Claims

1. A sealing structure for bridge contraction joints is used for expansion joints of bridges and is characterized by comprising a creep rubber layer (2), a sealing strip (3) and a pressing plate (4) which are sequentially arranged from bottom to top, wherein the creep rubber layer (2), the sealing strip (3) and the pressing plate (4) are connected with a bridge plate (1) of the bridge into a whole through pressing bolts;

the creep rubber layers (2) are respectively arranged on the upper surfaces of the bridge plates (1) at the two sides of the expansion joint;

the sealing strip (3) is a flexible strip body made of modified polyolefin, the sealing strip (3) comprises sealing sections (301) on two sides and a redundant section (302) in the middle, and the sealing sections (301) on the two sides are respectively arranged above the creep rubber layers (2) on the two sides of the expansion joint;

the two pressing plates (4) are respectively arranged above the two sealing sections (301).

2. A sealing structure for bridge contraction according to claim 1, wherein a polyester fiber layer (5) is thermally fused to a lower surface of the sealing tape (3).

3. A sealing structure for bridge contraction according to claim 1, wherein the width of the redundant segment (302) is larger than the width of the expansion joint.

4. A sealing structure for bridge contraction joints according to claim 1, wherein the lower surface of the pressure plate (4) is vulcanized with a rubber layer (6).

5. A bridge contraction sealing structure according to claim 4, wherein the lower surface of the pressure plate (4) is serrated.