Expansion joint water stop protection structure

Abstract

The utility model discloses an expansion joint water stop protection structure which comprises an I-shaped steel supporting structure which is arranged on the top of the inner side of an expansion joint and comprises two symmetrical I-shaped steel units, and the outer edges of the I-shaped steel units are attached to the inner side face of the expansion joint. The polyurea grouting layer comprises a polyurea connecting part and a polyurea buffering part, the polyurea connecting part is arranged on and between the I-shaped steel supporting structures, the two sides of the polyurea connecting part are connected with the bridge pavement through the polyurea buffering part, and the polyurea buffering part inclines downwards from the end close to the polyurea connecting part to the end away from the polyurea connecting part. According to the utility model, the smoothness of the position of the expansion joint can be adjusted in a self-adaptive manner, so that the passing stability of vehicles can be better ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering, in particular to an expansion joint water-stopping protective structure. Background Art

[0002] In order to adapt to the requirements of bridge deck deformation, expansion joints are usually set at the movable ends of the bridge superstructure and the bridge deck breaks to adjust the expansion and contraction of the bridge deck superstructure beam caused by automobile loads and shrinkage and creep caused by temperature changes in the beam concrete material, thereby meeting the requirements of longitudinal and lateral displacement changes at the beam ends, turning angles and allowing vehicles to pass smoothly.

[0003] The invention patent application CN103696396A discloses a water-stop structure for an expansion joint.

[0004] The side wall and upper edge of the contraction joint are provided with a primer layer, an elastic waterproof filler is filled in the expansion joint, and a polyurea elastomer waterproof coating is provided on the upper edge of the expansion joint. The above expansion joint waterproof structure has good waterproof performance, durability, strong impact resistance and wear resistance, and the ability to adapt to the three-dimensional deformation of the expansion joint, but it is provided with an isolation plate protruding from the road surface and a polyurea elastomer waterproof coating, which will affect the stability of vehicle passing to a certain extent. Utility Model Content

[0005] The utility model discloses an expansion joint water-stopping protection structure, which can make the position of the expansion joint self-adaptively adjust the smoothness, thereby better ensuring the stability of vehicle passing.

[0006] To achieve the above purpose, the technical solution of the utility model is:

[0007] An expansion joint water-stopping protection structure, comprising:

[0008] An I-beam support structure is arranged at the top of the inner side of the expansion joint, and comprises two symmetrical I-beam units, the outer edges of the I-beam units are in contact with the inner side of the expansion joint;

[0009] The polyurea grouting layer comprises a polyurea connecting part and a polyurea buffer part. The polyurea connecting part is arranged on and between the I-beam supporting structure, and both sides are connected to the bridge pavement through the polyurea buffer part. The polyurea buffer part is inclined downward from one end close to the polyurea connecting part to one end away from the polyurea connecting part.

[0010] Preferably, the downward slope of the polyurea buffer portion is: hypotenuse length: opposite side length = 7-3:1.

[0011] More preferably, the downward slope of the polyurea buffer portion is: length of hypotenuse: length of opposite side = 5:1.

[0012] Preferably, the top surface of the I-beam supporting structure is 1-2 cm lower than the horizontal plane where the bridge pavement is located.

[0013] More preferably, the top surface of the I-beam supporting structure is 1 cm below the horizontal plane where the bridge pavement is located.

[0014] Preferably, the polyurea connecting portion is 2-6 cm higher than the top surface of the I-beam supporting structure.

[0015] More preferably, the polyurea connecting portion is 3 cm higher than the top surface of the I-beam supporting structure.

[0016] Preferably, two side edges of the polyurea connecting portion are in a straight line with two side edges of the I-beam supporting structure.

[0017] The above-mentioned expansion joint water-stopping protection structure has the following advantages:

[0018] (1) Using I-beams as the expansion joint support structure can enhance the support strength of the expansion joint and the polyurea grouting layer and improve the bearing capacity of the bridge for heavy objects.

[0019] (2) The utility model adopts a polyurea grouting layer to connect the I-beam unit and the I-beam unit to the bridge pavement, and sets a certain slope on both sides of the polyurea grouting layer. On the one hand, it can prevent the vehicle from compressing and deforming and bulging too much, making the bridge surface smoother. On the other hand, it can reduce the impact of the vehicle on the I-beam, reduce noise, and better maintain the strength and bearing capacity of the I-beam.

[0020] (3) The I-beam units are connected with a polyurea grouting layer, which can also prevent water seepage, silt and residue from entering the expansion joint, extend the service life of the expansion joint and reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the elevation structure of an embodiment of the utility model.

[0022] Figure 2 It is a schematic diagram of the elevation structure of an embodiment of the utility model.

[0023] In the figure, there is a bridge concrete structure 1, an expansion joint 2, an I-beam supporting structure 3, a polyurea grouting layer 4, a polyurea connecting part 401, and a polyurea buffer part 402. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0026] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] A water-stopping protective structure for expansion joints, combined with Figure 1 As shown, it includes an I-beam support structure 3 and a polyurea grouting layer 4, wherein: the I-beam support structure 3 is arranged at the top of the inner side of the expansion joint 2, and includes two symmetrical I-beam units, the outer edges of the I-beam units are attached to the inner side of the expansion joint 2, and the I-beam units are made of I-beams, extending in the transverse direction of the expansion joint, that is, Figure 1 The front and rear directions are connected to meet the entire lateral requirements of supporting the expansion joint. There is an I-beam unit on each side, which is symmetrical with respect to the center line of the expansion joint 2 (the direction in which the center line extends is Figure 1The polyurea grouting layer 4 includes a polyurea connecting portion 401 and a polyurea buffering portion 402. The polyurea connecting portion 401 is arranged on the upper side of the I-beam supporting structure 3 and between the I-beam supporting structure 3. The figure shows that the polyurea connecting portion 401 is arranged on the upper side of the I-beam supporting structure 3 and between the upper flange of the I-beam supporting structure 3. The two sides are connected to the bridge pavement through the polyurea buffering portion 402. The polyurea buffering portion 402 is inclined downward from the end close to the polyurea connecting portion 401 to the end away from the polyurea connecting portion 401. The polyurea connecting portion 401 connects the I-beam unit to form a whole. The polyurea buffering portion 402 connects the I-beam unit to the bridge concrete structure 1 to form a whole. The polyurea grouting layer 4 is made by grouting with a single-component polyurea grouting liquid. The above technical solution has the following advantages: (1) The use of I-beam as the expansion joint 2 support structure can enhance the support strength of the expansion joint 2 and the polyurea grouting layer 4, and improve the bearing capacity of the bridge heavy objects. (2) The I-beam units and the I-beam units and the bridge pavement are connected by using a polyurea grouting layer 4, and a certain slope is set on both sides of the polyurea grouting layer 4. On the one hand, it can prevent the vehicle from compressing and deforming and protruding too much, and the compression of the vehicle at a certain slope transition when the vehicle is running can better ensure the stability of the vehicle passing. On the other hand, it can reduce the impact of the vehicle on the I-beam, reduce noise, and better maintain the strength and bearing capacity of the I-beam. (3) The I-beam units are connected by a polyurea grouting layer 4, which can also prevent water seepage and silt and residue from entering the expansion joint 2, extend the service life of the expansion joint 2, and reduce maintenance costs.

[0028] Preferably, combined Figure 2 As shown in the figure, the slope of the polyurea buffer 402 tilting downward is: hypotenuse length: opposite length = 7-3:1, the opposite length is the vertical distance from the highest position of the polyurea buffer 402 to the horizontal line of the bridge road surface, and the hypotenuse is the hypotenuse from the highest position of the polyurea buffer 402 to the bridge road surface, that is, a:b as shown in the figure, and a suitable slope can better maintain the stability of vehicle driving. More preferably, the slope of the polyurea buffer 402 tilting downward is: hypotenuse length: opposite length = 5:1.

[0029] Preferably, the top surface of the I-beam support structure 3 is 1-2 cm lower than the horizontal plane where the bridge pavement is located. In this way, the polyurea connecting portion 401 is kept as horizontal as possible with the bridge pavement after being compressed due to elastic factors, and the impact of vehicles on the I-beam can be better alleviated. More preferably, according to the compression degree of the polyurea grouting layer 4, the top surface of the I-beam support structure 3 is 1 cm lower than the horizontal plane where the bridge pavement is located.

[0030] Preferably, the polyurea connection portion 401 is 2-6 cm higher than the top surface of the I-beam support structure 3. The appropriate height also helps to maintain the stability of the vehicle while achieving a good effect of reducing the impact of the vehicle on the I-beam. More preferably, according to the compression degree of the polyurea grouting layer 4, the polyurea connection portion 401 is 3 cm higher than the top surface of the I-beam support structure 3.

[0031] Preferably, both sides of the polyurea connecting portion 401 are in a straight line with both sides of the I-beam supporting structure 3, that is, the polyurea grouting layer 4 is at its thickest thickness position just above the I-beam supporting structure 3, which can better help mitigate the impact of vehicles on the I-beam.

Claims

1. A water-stopping protective structure for expansion joints, characterized in that include: An I-beam support structure is arranged at the top of the inner side of the expansion joint, and comprises two symmetrical I-beam units, the outer edges of the I-beam units are in contact with the inner side of the expansion joint; The polyurea grouting layer comprises a polyurea connecting part and a polyurea buffer part. The polyurea connecting part is arranged on and between the I-beam supporting structure, and both sides are connected to the bridge pavement through the polyurea buffer part. The polyurea buffer part is inclined downward from one end close to the polyurea connecting part to one end away from the polyurea connecting part.

2. The expansion joint water-stopping protective structure according to claim 1 is characterized in that: The downward slope of the polyurea buffer portion is: length of hypotenuse: length of opposite side = 7-3:

1.

3. The expansion joint water-stopping protective structure according to claim 2 is characterized in that: The downward slope of the polyurea buffer portion is: length of hypotenuse: length of opposite side = 5:

1.

4. The expansion joint water-stopping protective structure according to claim 1, characterized in that: The top surface of the I-beam support structure is 1-2 cm lower than the horizontal plane where the bridge pavement is located.

5. The expansion joint water-stopping protective structure according to claim 4 is characterized in that: The top surface of the I-beam supporting structure is 1 cm below the horizontal plane where the bridge pavement is located.

6. The expansion joint water-stopping protective structure according to any one of claims 1 to 5, characterized in that: The polyurea connecting portion is 2-6 cm higher than the top surface of the I-beam supporting structure.

7. The expansion joint water-stopping protective structure according to claim 6, characterized in that: The polyurea connecting portion is 3 cm higher than the top surface of the I-beam supporting structure.

8. The expansion joint water-stopping protective structure according to claim 1, characterized in that: The two side edges of the polyurea connecting portion are in a straight line with the two side edges of the I-beam supporting structure.

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