Light high-toughness fiber concrete prefabricated part and construction method

Abstract

The invention discloses a light high-toughness fiber concrete prefabricated part which comprises a prefabricated part body, the prefabricated part body comprises an outer stabilizing layer, a light reinforcing part and a light toughness layer, a containing groove is formed in the prefabricated part body, the light reinforcing part and the light toughness layer are located in the containing groove, and the light reinforcing part penetrates through the light toughness layer. The structure of the tunnel concrete prefabricated component for reinforcing and repairing is improved, the outer layer of the tunnel concrete prefabricated component is the stable layer, the containing groove is formed in the stable layer, the light reinforcing piece composed of the transverse steel pipes and the longitudinal steel pipes is arranged in the containing groove, and the light ductile layers are filled in the light reinforcing piece and the containing groove; the light tough layer is mainly composed of a cement base, light aggregate, fibers, steel pipes and the like, the outer stable layer is mainly composed of a cement base, heavy aggregate, fibers, steel pipes and the like, and compared with a traditional concrete prefabricated part, the weight of the structure is greatly reduced, meanwhile, the overall stability is not affected, and the labor intensity of manual carrying is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of lightweight concrete prefabricated components, and in particular relates to a lightweight high-toughness fiber concrete prefabricated component and a construction method. Background Art

[0002] The application of precast concrete components in tunnel reinforcement and repair has brought significant advantages to the project. These components are prefabricated in the factory to ensure their high precision and stability. After the precast components are transported to the tunnel site, they can be installed quickly and efficiently, greatly shortening the construction period.

[0003] Precast concrete components play a vital role in tunnel reinforcement and repair. They can be used to repair damaged tunnel walls, vaults and floors, and enhance the overall structural strength of the tunnel.

[0004] At present, the prefabricated components used for tunnel reinforcement and repair are generally too heavy and need to be manually carried for tunnel repair and reinforcement. This not only increases the labor intensity and construction time of construction workers, but may also cause damage to components or injuries to construction workers due to improper operation. Summary of the invention

[0005] The purpose of the present invention is to propose a lightweight and high-toughness fiber concrete prefabricated component and construction method to solve the problem that the prefabricated components currently in use for tunnel reinforcement and repair are generally too heavy and need to be manually carried to repair and reinforce the tunnel, which not only increases the labor intensity and construction time of the construction workers, but may also cause damage to the components or injuries to the construction workers due to improper operation.

[0006] In order to achieve the above-mentioned objectives, the present invention adopts the following technical scheme: a lightweight and high-toughness fiber concrete prefabricated component, comprising: a prefabricated component body, which includes an outer stabilizing layer, a lightweight reinforcement member and a lightweight tough layer, a receiving groove is arranged in the prefabricated component body, the lightweight reinforcement member and the lightweight tough layer are located in the receiving groove, and the lightweight reinforcement member runs through the lightweight tough layer.

[0007] As a further description of the above technical solution:

[0008] The lightweight reinforcement member comprises a plurality of transverse members and a plurality of vertical members, and the plurality of transverse members and the plurality of vertical members cross each other.

[0009] As a further description of the above technical solution:

[0010] The horizontal members and the vertical members are both steel pipes.

[0011] As a further description of the above technical solution:

[0012] The shape of the steel pipe matches the shape of the containing groove.

[0013] As a further description of the above technical solution:

[0014] The prefabricated component body is provided with a plurality of limiting grooves.

[0015] As a further description of the above technical solution:

[0016] The limiting groove may be T-shaped or trapezoidal.

[0017] The present invention also provides a construction method for a lightweight and high-toughness fiber concrete prefabricated component, comprising the following steps:

[0018] S1: Raw material preparation, 40-60% cement-based materials, 15-35% lightweight aggregate and heavy aggregate, 2-10% fiber material, 2-10% microsilica powder or silica fume, 0.5-2% water reducer and 10-15% water:

[0019] S2: Mixing: adding the cement-based material, the lightweight aggregate, the microsilica powder or silica fume, the water reducing agent and the water raw material into a mixer and mixing them thoroughly;

[0020] S3: adding the fiber material: adding the fiber material to the evenly mixed concrete, and continuing to mix until the fiber is evenly dispersed in the concrete to form a lightweight and tough concrete;

[0021] S4: constructing the lightweight reinforcement member, constructing a plurality of the horizontal members and a plurality of the vertical members in a mold;

[0022] S5: pouring, pouring the mixed concrete into the prefabricated mold, vibrating and compacting it, so as to achieve a filling connection between the lightweight tough concrete and the lightweight reinforcement member;

[0023] S6: curing, curing the inner layer structure of the poured precast concrete component until the designed strength is reached to form the lightweight toughness layer;

[0024] S7: Continue mixing, continue adding the heavy aggregate and the fiber material into the lightweight tough concrete and continue to mix evenly to form concrete for the outer stabilizing layer;

[0025] S8: Casting again, removing the side baffles around the lightweight tough layer in the mold, and pouring the mixed concrete for the outer stabilizing layer into the mold so that it is located outside the lightweight tough layer;

[0026] S9: curing again, curing the outer structure of the cast prefabricated component until it reaches the designed strength to form the outer stabilizing layer.

[0027] As a further description of the above technical solution:

[0028] In the pouring step, the mold is cleaned and coated with a release agent in advance.

[0029] As a further description of the above technical solution:

[0030] The light aggregate is perlite, vermiculite or ceramsite, and the heavy aggregate is iron ore, crushed stone or pebble.

[0031] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0032] In the present invention, the structure of the tunnel concrete precast component used for reinforcement and repair is improved, the outer layer of which is a stabilizing layer, and a containing groove is arranged inside. A lightweight reinforcement member composed of a plurality of transverse steel pipes and longitudinal steel pipes is arranged in the containing groove, and a lightweight tough layer is filled in the lightweight reinforcement member and the containing groove. The lightweight tough layer is mainly composed of cement-based, lightweight aggregate, fiber and steel pipe, and the outer stabilizing layer is mainly composed of cement-based, heavy aggregate, fiber and steel pipe. Compared with traditional concrete precast components, the weight of this structure is greatly reduced without affecting the overall stability, which is convenient for manual handling and reduces the labor degree of manual handling. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 It is a three-dimensional lightweight and high-toughness fiber concrete prefabricated component. Figure 1 .

[0035] Figure 2 It is a three-dimensional lightweight and high-toughness fiber concrete prefabricated component. Figure 2 .

[0036] Figure 3 A cross-sectional view of a lightweight and high-toughness fiber concrete prefabricated component.

[0037] Figure 4 It is a three-dimensional lightweight and high-toughness fiber concrete prefabricated component. Figure 3 .

[0038] Figure 5 A step-by-step diagram of a construction method for lightweight and high-toughness fiber concrete prefabricated components.

[0039] Legend:

[0040] 1-prefabricated component body; 11-external stabilizing layer; 12-lightweight reinforcement member; 121-transverse member; 122-vertical member; 13-lightweight toughness layer; 2-accommodating groove; 3-limiting groove. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0045] In the description of the embodiments of the present invention, it should be noted that the terms "upper", "inner", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention 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 should not be understood as a limitation on the present invention.

[0046] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] See also Figure 1-5 The present invention provides a technical solution: a lightweight and high-toughness fiber concrete prefabricated component, comprising:

[0048] The prefabricated component body 1 includes an outer stabilizing layer 11, a lightweight reinforcement member 12 and a lightweight tough layer 13. A receiving groove 2 is provided in the prefabricated component body 1. The lightweight reinforcement member 12 and the lightweight tough layer 13 are located in the receiving groove 2, and the lightweight reinforcement member 12 runs through the lightweight tough layer 13.

[0049] The lightweight reinforcement member 12 includes a plurality of transverse members 121 and a plurality of vertical members 122 , and the plurality of transverse members 121 and the plurality of vertical members 122 are intersecting with each other.

[0050] The horizontal member 121 and the vertical member 122 are both steel pipes.

[0051] The shape of the steel pipe matches the shape of the containing tank 2 .

[0052] The prefabricated component body 1 is provided with a plurality of limiting grooves 3 .

[0053] The limiting groove 3 can be T-shaped or trapezoidal.

[0054] The present invention also provides a construction method for a lightweight and high-toughness fiber concrete prefabricated component, comprising the following steps:

[0055] S1: Raw material preparation, 40-60% cement-based materials, 15-35% lightweight aggregate and heavy aggregate, 2-10% fiber material, 2-10% microsilica powder or silica fume, 0.5-2% water reducer and 10-15% water:

[0056] S2: Mixing: adding the cement-based material, the lightweight aggregate, the microsilica powder or silica fume, the water reducing agent and the water raw material into a mixer and mixing them thoroughly;

[0057] S3: adding the fiber material: adding the fiber material to the evenly mixed concrete, and continuing to mix until the fiber is evenly dispersed in the concrete to form a lightweight and tough concrete;

[0058] S4: The lightweight reinforcement member 12 is constructed by placing a plurality of the horizontal members 121 and a plurality of the vertical members 122.

[0059] The component 122 is built in the mold;

[0060] S5: pouring, pouring the mixed concrete into the prefabricated mold, vibrating and compacting it, so as to achieve a filling connection between the lightweight tough concrete and the lightweight reinforcement member 12;

[0061] S6: curing, curing the inner layer structure of the poured precast concrete component until the designed strength is reached to form the lightweight toughness layer 13;

[0062] S7: Continue mixing, continue adding the heavy aggregate and the fiber material into the lightweight tough concrete and continue to mix evenly to form concrete for the outer stabilizing layer 11;

[0063] S8: Casting again, removing the side baffles around the lightweight tough layer 13 in the mold, and pouring the mixed concrete for the outer stabilizing layer 11 into the mold so that it is located outside the lightweight tough layer 13;

[0064] S9: curing again, curing the cast outer structure of the prefabricated component until it reaches the designed strength to form the outer stabilizing layer 11.

[0065] In the pouring step, the mold is cleaned and coated with a release agent in advance.

[0066] The light aggregate is perlite, vermiculite or ceramsite, and the heavy aggregate is iron ore, crushed stone or pebble.

[0067] Working principle: By improving the structure of the tunnel concrete precast components used for reinforcement and repair, the outer layer is a stabilizing layer, and a receiving groove is arranged inside. A lightweight reinforcement composed of several horizontal steel pipes and longitudinal steel pipes is arranged in the receiving groove. A lightweight tough layer is filled in the lightweight reinforcement and the receiving groove. The lightweight tough layer is mainly composed of cement-based, lightweight aggregate, fiber and steel pipe, etc. The outer stabilizing layer is mainly composed of cement-based, heavy aggregate, fiber and steel pipe. Compared with traditional concrete precast components, the weight of this structure is greatly reduced without affecting the overall stability, which is convenient for manual handling and reduces the labor of manual handling.

[0068] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lightweight and high-toughness fiber concrete prefabricated component, characterized in that: include: The prefabricated component body comprises an outer stabilizing layer, a lightweight reinforcement piece and a lightweight tough layer. A receiving groove is arranged in the prefabricated component body. The lightweight reinforcement piece and the lightweight tough layer are located in the receiving groove. The lightweight reinforcement piece runs through the lightweight tough layer.

2. A lightweight and high-toughness fiber concrete prefabricated component according to claim 1, characterized in that: The lightweight reinforcement member comprises a plurality of transverse members and a plurality of vertical members, and the plurality of transverse members and the plurality of vertical members cross each other.

3. A lightweight and high-toughness fiber concrete prefabricated component according to claim 2, characterized in that: The horizontal member and the vertical member are both steel pipes.

4. The lightweight and high-toughness fiber concrete prefabricated component according to claim 1, characterized in that: The shape of the steel pipe matches the shape of the containing groove.

5. The lightweight and high-toughness fiber concrete prefabricated component according to claim 1, characterized in that: The prefabricated component body may also be provided with a plurality of limiting grooves.

6. The lightweight and high-toughness fiber concrete prefabricated component according to claim 1, characterized in that: The limiting groove may be T-shaped or trapezoidal.

7. The construction method of a lightweight and high-toughness fiber concrete prefabricated component according to claim 1, characterized in that: The following steps are involved: S1: Raw material preparation, 40-60% cement-based materials, 15-35% lightweight aggregate and heavy aggregate, 2-10% fiber material, 2-10% microsilica powder or silica fume, 0.5-2% water reducer and 10-15% water: S2: Mixing: adding the cement-based material, the lightweight aggregate, the microsilica powder or silica fume, the water reducing agent and the water raw material into a mixer and mixing them thoroughly; S3: adding the fiber material: adding the fiber material to the evenly mixed concrete, and continuing to mix until the fiber is evenly dispersed in the concrete to form a lightweight and tough concrete; S4: constructing the lightweight reinforcement member, constructing a plurality of the horizontal members and a plurality of the vertical members in a mold; S5: pouring, pouring the mixed concrete into the prefabricated mold, vibrating and compacting it, so as to achieve a filling connection between the lightweight tough concrete and the lightweight reinforcement member; S6: curing, curing the inner layer structure of the poured precast concrete component until the designed strength is reached to form the lightweight toughness layer; S7: Continue mixing, continue adding the heavy aggregate and the fiber material into the lightweight tough concrete and continue to mix evenly to form concrete for the outer stabilizing layer; S8: Casting again, removing the side baffles around the lightweight tough layer in the mold, and pouring the mixed concrete for the outer stabilizing layer into the mold so that it is located outside the lightweight tough layer; S9: curing again, curing the outer structure of the cast prefabricated component until it reaches the designed strength to form the outer stabilizing layer.

8. The construction method of a lightweight and high-toughness fiber concrete prefabricated component according to claim 7, characterized in that: In the pouring step, the mold is cleaned and coated with a release agent in advance.

9. The construction method of a lightweight and high-toughness fiber concrete prefabricated component according to claim 7, characterized in that: The light aggregate is perlite, vermiculite or ceramsite, and the heavy aggregate is iron ore, crushed stone or pebble.

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