CN216811107U

CN216811107U - Semi-rigid crack repairing structure

Info

Publication number: CN216811107U
Application number: CN202220226313.9U
Authority: CN
Inventors: 田甜; 严伟; 胡丹
Original assignee: Hunan Sany Vocational and Technical College of Industry
Current assignee: Hunan Sany Vocational and Technical College of Industry
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-06-24
Anticipated expiration: 2032-01-25

Abstract

The utility model discloses a semi-rigid crack repairing structure which comprises a concrete structure layer, wherein a crack groove is formed in the concrete structure layer, a flexible adhesive is filled in the crack groove, a shallow surface layer groove is formed in the surface of the concrete structure layer along the crack groove development direction, the shallow surface layer groove is communicated with the crack groove, an interfacial agent layer is coated on the inner wall of the shallow surface layer groove, an epoxy mortar layer is poured on the inner wall of the interfacial agent layer, and a steel wire mesh belt is wrapped in the epoxy mortar layer. Compared with single-layer carbon fiber cloth or other anti-crack fiber nets, the anti-crack carbon fiber cloth can bear impact shearing force, can release force when being stressed compared with steel plates and carbon fiber plates with the same rigidity, and acts together with tough epoxy mortar, so that the long-term impact stress resistance of the structure is obviously improved.

Description

Semi-rigid crack repairing structure

Technical Field

The utility model relates to the technical field of crack repair, in particular to a semi-rigid crack repair structure.

Background

Cracks are common concrete diseases, and the repair of concrete cracks is generally designed according to crack limiting. When a crack damages a project, the crack needs to be repaired, and the crack can be divided into a deep-entering crack (containing a penetrating crack) and a surface crack.

The repair is done in different ways for different types of cracks. The repair of the penetrating crack is preferably carried out according to the live crack treatment, the seepage prevention and durability requirements of the crack need to be considered, the surface sealing is carried out after the crack is filled by grouting in the conventional treatment mode, but the repair mode easily causes the damage of the interface of the surface sealing layer and forms a secondary crack when continuous uneven settlement is formed at two sides of the crack or the crack needs to bear impact load or vibration, and simultaneously causes the damage of debonding and the like to the repair of the lower crack due to water or erosive value brought by the generation of the secondary crack.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem of secondary cracking of the crack when uneven settlement is formed on two sides of the crack or the crack needs to bear impact load or vibration, the utility model provides a semi-rigid crack repairing structure.

The technical scheme of the utility model is as follows: the utility model provides a semi-rigid crack repair structure, includes the concrete structure layer, contain the crack groove in the concrete structure layer, the crack inslot fills there is the pliability adhesive, concrete structure layer surface has seted up the top layer shallow slot along crack groove development direction crack, top layer shallow slot and crack groove communicate mutually, the coating has the interfacial agent layer on the top layer shallow slot inner wall, pour epoxy mortar layer on the interfacial agent layer inner wall, the parcel has the steel wire guipure in the epoxy mortar layer.

As a further improvement of the above technical solution:

preferably, the upper surface of the epoxy mortar layer is flush with the surface of the concrete structure layer.

Preferably, the steel wire mesh belt comprises a mesh belt, main ribs and movable connecting pieces, wherein a plurality of equidistant main ribs are arranged in the mesh belt, and two ends of each two connected main ribs are hinged through the movable connecting pieces.

Preferably, the main ribs are not parallel to the development direction of the crack groove.

Preferably, the movable connecting piece is a connecting piece.

Preferably, the movable connecting piece is a chain.

Preferably, the width of the mesh belt is 5cm-20cm, and the diameter of the steel wires in the mesh belt is 1mm-8 mm.

Preferably, the bottom surface of the steel wire mesh belt is in contact with the shallow groove of the surface layer.

Preferably, the size of the surface shallow groove is larger than that of the steel wire mesh belt.

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

1. compared with the prior art, the utility model adopts the steel wire mesh belt with certain rigidity and capable of moving in the vertical direction as a bearing structure under the conditions of uneven settlement or impact load or vibration. Compared with single-layer carbon fiber cloth or other anti-crack fiber nets, the anti-crack carbon fiber cloth can bear impact shearing force, can release force when being stressed compared with steel plates and carbon fiber plates with the same rigidity, and acts together with tough epoxy mortar, so that the long-term impact stress resistance of the structure is obviously improved.

2. The tough epoxy mortar can prevent the secondary damage of the crack caused by the infiltration of the upper aggressive medium into the bottom crack, and can also absorb the impact or shear stress together with the movable steel wire mesh belt due to certain toughness, thereby ensuring the long-term property of the repairing effect.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural diagram of a top view of a steel wire mesh belt when the movable connecting piece of the present invention is a connecting piece;

fig. 3 is a schematic structural diagram of a top view of the steel wire mesh belt when the movable connecting element of the utility model is a chain.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "front", "back", "left", "right", "up", "down", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated by the terms must have specific orientations, be constructed and operated in specific orientations, and therefore, should not be construed as limiting the present invention.

Example 1

Referring to fig. 1 and fig. 2, the present invention provides the following technical solutions: a semi-rigid crack repairing structure comprises a concrete structure layer 1, wherein a crack groove 2 is formed in the concrete structure layer 1, a flexible adhesive 3 is filled in the crack groove 2, a surface shallow groove 4 is formed in the surface of the concrete structure layer 1 along the development direction of the crack groove 2, the surface shallow groove 4 is communicated with the crack groove 2, an interface agent layer 5 is coated on the inner wall of the surface shallow groove 4, an epoxy mortar layer 6 is poured on the inner wall of the interface agent layer 5, the upper surface of the epoxy mortar layer 6 is flush with the surface of the concrete structure layer 1, a steel wire mesh belt 7 is wrapped in the epoxy mortar layer 6, the steel wire mesh belt 7 consists of a mesh belt 71, main ribs 72 and connecting sheets 73(A), a plurality of connecting sheets 72 with equal intervals are arranged in the mesh belt 71, two ends of the two connected main ribs 72 are connected through the connecting sheets 73(A), the connecting sheets 73(A) are hinged with the main ribs 72, the connecting sheets 73(A) can be laid on a base surface with uneven bottom surface, so that the mesh belt 71 is laid in the rugged inside to be closely attached.

Example 2

Referring to fig. 1 and fig. 3, a semi-rigid crack repairing structure includes a concrete structure layer 1, the concrete structure layer 1 includes a crack slot 2, the crack slot 2 is filled with a flexible adhesive 3, a shallow slot 4 is formed on the surface of the concrete structure layer 1 along the development direction of the crack slot 2, the shallow slot 4 is communicated with the crack slot 2, an interfacial agent layer 5 is coated on the inner wall of the shallow slot 4, an epoxy mortar layer 6 is poured on the inner wall of the interfacial agent layer 5, the upper surface of the epoxy mortar layer 6 is flush with the surface of the concrete structure layer 1, a steel wire mesh belt 7 is wrapped in the epoxy mortar layer 6, the steel wire 7 is composed of a mesh belt 71, a main rib 72 and a chain 73(B), a plurality of main ribs 72 with equal spacing are arranged in the mesh belt 71, one end of the same side of the main rib 72 is connected through the chain 73(B), the chain 73(B) is hinged with the main rib 72, the chain 73(B) can be laid on a base plane with a non-flat bottom surface, so that the mesh belt 71 is laid in the rugged inside to be closely attached.

The implementation process and principle of the utility model are as follows:

1. firstly, a shallow groove 4 on the surface layer is made on the perforation along the development direction of the crack groove 2, the size of the shallow groove 4 on the surface layer is generally slightly larger than that of a steel wire mesh belt 7 which is movably arranged, the width of the steel wire mesh belt 7 is 5cm-20cm, the diameter of a steel wire in the steel wire mesh belt 7 is preferably 1mm-8mm, the wider the crack groove 2 is, the larger the width of the shallow groove 4 on the surface layer is, and the longer the length of the crack groove 2 is, the longer the length of the steel wire mesh belt 7 is.

2. After the air pressure crack cleaning and base surface treatment, the flexible adhesive 3 is injected into the lower crack groove 2 by adopting a low-pressure pouring mode, so that the cracked concrete forms a whole.

3. Then smearing an interface agent layer 5 in the surface shallow groove 4, pouring an epoxy mortar layer 6, extruding and embedding a steel wire mesh belt 7 in the epoxy mortar layer 6, enabling a main rib 72 to be vertical or crossed along the development direction of the crack groove 2 and not to be parallel, enabling the bottom of the steel wire mesh belt 7 to be in contact with the bottom surface of the surface shallow groove 4, and pouring epoxy mortar to enable the epoxy mortar layer 6 on the surface to be flush with the surface of the concrete structure layer 1;

4. the main rib 72 of the movable steel wire mesh belt 7 at the upper part has certain rigidity and is vertical to or crossed with the crack, the main rib 72 has certain moving space in the vertical direction due to mechanical anchoring and locking, and the deformation performance and the impact resistance of the tough epoxy mortar layer 6 are added, so that under the condition of uneven settlement or impact load or vibration, the main rib 72 can not only discharge a part of impact energy through the displacement in the vertical direction, but also can be used as a main stress structure under the condition of uneven settlement or impact load or vibration, the load is dispersed and transmitted to a lower structure, the secondary damage of the crack caused by stress concentration at the upper part of the concrete crack is avoided, and the integrity and the durability of the concrete crack repair are ensured.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a semi-rigid crack repair structure, includes the concrete structure layer, contain the crack groove in the concrete structure layer, the crack inslot is filled into there is pliability adhesive, its characterized in that: the surface shallow groove is formed in the surface of the concrete structure layer along the crack groove development direction, the surface shallow groove is communicated with the crack groove, an interface agent layer is coated on the inner wall of the surface shallow groove, an epoxy mortar layer is poured on the inner wall of the interface agent layer, and a steel wire mesh belt is wrapped in the epoxy mortar layer.

2. The semi-rigid fracture repair structure of claim 1, wherein: the upper surface of the epoxy mortar layer is flush with the surface of the concrete structure layer.

3. The semi-rigid fracture repair structure of claim 1, wherein: the steel wire mesh belt comprises a mesh belt, main ribs and movable connecting pieces, wherein a plurality of equidistant main ribs are arranged in the mesh belt, and two ends of each two connected main ribs are hinged through the movable connecting pieces.

4. The semi-rigid fracture repair structure of claim 3, wherein: the main ribs are not parallel to the development direction of the crack groove.

5. The semi-rigid fracture repair structure of claim 3, wherein: the movable connecting piece is a connecting piece.

6. The semi-rigid fracture repair structure of claim 3, wherein: the movable connecting piece is a chain.

7. The semi-rigid fracture repair structure of claim 3, wherein: the width of the mesh belt is 5cm-20cm, and the diameter of the steel wire in the mesh belt is 1mm-8 mm.

8. The semi-rigid fracture repair structure of claim 1 or 3, wherein: the bottom surface of the steel wire mesh belt is in contact with the surface shallow groove.

9. The semi-rigid fracture repair structure of claim 1 or 3, wherein: the size of the surface shallow groove is larger than that of the steel wire mesh belt.