CN219772746U

CN219772746U - Bridge deck repairing device

Info

Publication number: CN219772746U
Application number: CN202320675406.4U
Authority: CN
Inventors: 王耀; 李栋; 郭晓; 邝磊; 张朝阳
Original assignee: CSCEC Strait Construction and Development Co Ltd
Current assignee: CSCEC Strait Construction and Development Co Ltd
Priority date: 2023-03-30
Filing date: 2023-03-30
Publication date: 2023-09-29
Anticipated expiration: 2033-03-30

Abstract

The utility model discloses a bridge deck repairing device, wherein an anchoring tool is used for being fixed at the end part of a bridge deck; the support frame is used for being placed on the ground; the expansion assemblies are uniformly distributed between the top surface of the support frame and the bottom surface of the bridge deck, and the expansion assemblies are inflated and expanded to lift the bridge deck upwards; two ends of the CFRP component are respectively connected with corresponding anchoring tools at two end parts of the bridge deck; the tensioning device is used for tensioning the CFRP component; the bottom surface of the bridge deck is lifted by replacing the jack with the air bag, so that the bottom surface of the bridge deck is stressed more uniformly, and the damaged bridge deck is prevented from being damaged locally; the middle part of the bridge deck is jacked up/arched towards the same level, and the CFRP component is tensioned through the tensioning device, so that the CFRP component is tensioned at the two ends of the bridge deck.

Description

Bridge deck repairing device

Technical Field

The utility model relates to the technical field of tie-dyeing, in particular to a bridge deck repairing device.

Background

Bridge decks, also known as roadway panels, are load bearing structures that directly bear the wheel pressure of a vehicle. It is usually connected with the rib and diaphragm plate of the main beam in its structure, so that it can not only transfer the load of vehicle to the main beam, but also form the component of main beam section, and can ensure the whole action of main beam. The bridge deck plate can be damaged by fatigue failure, sagging, cracks and the like after long-time use.

CFRP (carbon fiber reinforced polymer) is a carbon fiber reinforced composite material which is formed by taking carbon fiber or carbon fiber fabric as a reinforcement body and taking resin, ceramic, metal, cement, carbon or rubber and the like as a matrix, and has the advantages of excellent mechanical property and chemical stability, light weight, high strength, softness, easy following, convenient construction and the like, and more importance is paid to the fields of civil engineering reinforcement and repair and the like.

The existing bridge deck slab repair generally adopts a jack to carry out jacking work, however, jacking construction by adopting the jack has the following problems: (1) The lifting speed of the jack is unstable, the oil pressure is insufficient or the cavity of the jack is provided with air, the phenomenon of air jump exists, sudden unloading is easy to occur, and secondary damage is caused to the bridge deck; (2) The lifting of the jacks is asynchronous at the same time, the oil pressure flow of each jack is inconsistent, and obvious dimensional deviation is easy to occur in lifting and positioning; (3) The jack is easy to cause local stress concentration and local damage to the bridge deck at the lifting point.

Disclosure of Invention

The present utility model is directed to an abutment repair device, which solves the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

an abutment surface repair device comprising:

an anchor tool for securing to an end of the deck slab;

the support frame is used for being placed on the ground;

the expansion assemblies are uniformly distributed between the top surface of the support frame and the bottom surface of the bridge deck, the expansion assemblies are inflated and used for jacking the bridge deck upwards, different expansion assemblies need synchronous coordination control, reasonable and accurate air pressure is applied, and the jacking synchronism, continuity and uniformity are ensured;

the two ends of the CFRP member are respectively connected with the corresponding anchoring tools at the two ends of the bridge deck;

and the tensioning device is used for tensioning the CFRP member.

Preferably, a stress panel is arranged at the bottom of the support frame.

Preferably, the expansion assembly comprises a shaping cylinder with an open top and an air bag arranged in the shaping cylinder, wherein the air bag is connected with an external air source through an electromagnetic valve on the air bag.

Preferably, the distance measuring device is uniformly arranged on the support frame along the length direction of the bridge deck, and the distance measuring device is used for measuring the distance between the support frame and the bottom surface of the bridge deck.

Preferably, the CFRP member is a CFRP cable or a CFRP strip plate or a CFRP anchor rod.

Compared with the prior art, the utility model has the beneficial effects that:

the bottom surface of the bridge deck is lifted by replacing the jack with the air bag, so that the bottom surface of the bridge deck is stressed more uniformly, and the damaged bridge deck is prevented from being damaged locally;

the middle part of the bridge deck is jacked up/arched towards the same level, and the CFRP component is tensioned through the tensioning device, so that the CFRP component is tensioned at two ends of the bridge deck, and the reset sinking of the bridge deck after the air bags are removed is prevented.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of an expansion assembly according to the present utility model;

FIG. 3 is a schematic view of the CFRP member distribution structure of the present utility model.

1. A bridge deck; 2. an anchoring tool; 3. a tensioning device; 4. a support frame; 41. a force-bearing panel; 5. a CFRP member; 6. an expansion assembly; 61. shaping the cylinder; 62. an air bag; 7. a distance measuring device.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The stay cable component is the main stress component of the chord support structure, and steel cable components are most commonly used in engineering. However, in practical application, the corrosion resistance of the steel cable is poor, so that the steel cable often loses the bearing capacity due to corrosion, and the whole structure is damaged. To solve this problem, those skilled in the art are planning to replace steel cables in chord-supported structures with carbon fiber reinforced Composites (CFRP) that are lightweight and strong with good corrosion resistance.

The bridge deck 1 is of a large-span structure; the deck slab 1 sags after a long period of use.

Examples:

as shown in fig. 1-3:

the anchor tools 2 are fixedly arranged at the two ends of the bottom of the bridge deck plate 1, one end of the CFRP member 5 is fixed at the left anchor tool 2, and one end of the CFRP member 5 penetrates through the right anchor tool 2 and is connected with the tensioning device 3.

Because there is the condition of earth under the bridge, consequently, support frame 4 bottom prevents sinking through the great atress panel 41 of a plurality of areas with ground butt to set up multiunit inflation assembly 6 at support frame 4 top rectangular array, the inflation assembly 6 is inflated in advance so that its top surface and the abutment of the decking 1 bottom surface directly over.

The expansion assembly 6 comprises a shaping cylinder 61 and an air bag 62, wherein the shaping cylinder 61 is of a rigid structure, the hollow top of the shaping cylinder 61 is open, the air bag 62 is arranged in the shaping cylinder 61, the air bag 62 is provided with an electromagnetic valve, and the electromagnetic valve is connected with an external air source so as to inflate the air bag 62; the different expansion assemblies 6 need synchronous coordination control, reasonable and accurate air pressure is applied, and the jacking synchronism, continuity and uniformity are guaranteed, so that the electromagnetic valves are connected with the same controller (such as a PLC), the different expansion assemblies 6 are controlled to expand different body types, and the air bags 62 only expand upwards when the air bags 62 are inflated due to the fact that the molding barrel 61 has only the top opening.

The distance measuring device 7 is arranged on the upper surface of the supporting frame 4 in a straight equidistant manner along the length direction of the bridge deck plate 1 by adopting an infrared distance measuring instrument, and the distance measuring device 7 is used for measuring the distance between the distance measuring device and the bottom surface of the bridge deck plate 1 right above.

As shown in fig. 3, several sets of CFRP members 5 are provided between the two ends of the bridge deck 1, and the CFRP members 5 may be any one of a cable structure, a strap structure or an anchor rod structure.

Working principle:

the bottom of the expansion assembly 6 is limited and fixed by the support frame 4, so that the air bags 62 can only expand upwards, the air bags 62 of the expansion assembly 6 positioned in the middle of the bridge deck 1 are inflated with the most air, and the air bags 62 on the two sides of the air bags 62 sequentially reduce the inflation amount; the bridge deck 6 is lifted upwards by a plurality of air bags 62 below, so that the middle part of the bridge deck 6 is arched upwards; in the process, the bridge deck slab 1 feeding distances at different positions can be measured through the plurality of distance measuring devices 7, so that a worker can control the inflation rate of the corresponding air bag 62 according to the measured data of the distance measuring devices 7 at different positions.

At the same time, the tensioning device 3 simultaneously tightens the CFRP member 5 so that the CFRP member 5 is always in a tightened state, and a strain gauge for detecting the tightened state thereof is mounted on the CFRP member 5.

After the air bag 62 of the expansion assembly 6 lifts and arches the middle part of the bridge deck 1 to a set distance, the anchoring tool 2 on the right side fixedly connects the CFRP members 5 into a whole, and the CFRP members 5 are in a tensioning state; the tensioning device 3, the support frame 4 and the expansion assembly 6 are then removed.

The two ends of the CFRP component 5 which are tensioned are fixed at the two ends of the bridge deck plate 1, so that the middle part of the bridge deck plate 1 is arched upwards and reset to the flush state.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims

1. An abutment plate prosthetic devices, its characterized in that: comprising the following steps:

-an anchoring tool (2), the anchoring tool (2) being adapted to be fixed at an end of the deck slab (1);

the support frame (4), the said support frame (4) is used for placing on the ground;

the expansion assemblies (6) are uniformly distributed between the top surface of the support frame (4) and the bottom surface of the bridge deck (1), and the expansion assemblies (6) are inflated for jacking the bridge deck (1) upwards;

the CFRP member (5), both ends of the CFRP member (5) are respectively connected with the corresponding anchoring tools (2) at both ends of the bridge deck (1);

-tensioning means (3), said tensioning means (3) being adapted to tension the CFRP member (5).

2. The bridge deck restoration device as defined in claim 1, wherein: the bottom of the supporting frame (4) is provided with a stress panel (41).

3. The bridge deck restoration device as defined in claim 1, wherein: the expansion assembly (6) comprises a shaping cylinder (61) with an open top and an air bag (62) arranged in the shaping cylinder (61), wherein the air bag (62) is connected with an external air source through an electromagnetic valve on the air bag.

4. The bridge deck restoration device as defined in claim 1, wherein: distance measuring devices (7) are uniformly arranged on the support frame (4) along the length direction of the bridge deck (1), and the distance measuring devices (7) are used for measuring the distance between the support frame and the bottom surface of the bridge deck (1).

5. The bridge deck restoration device as defined in claim 1, wherein: the CFRP member (5) is a CFRP cable, a CFRP strip plate or a CFRP anchor.