CN209817249U - A prefabricated foam concrete composite wall panel for building infill walls - Google Patents

Abstract

The utility model discloses a prefabricated foam concrete composite wall panel used for building filling walls. The foam concrete is used as a core panel, the surface of the wall panel is compounded with a concrete surface layer, and there are hidden beams inside the wall panel. Groove, rings and support holes are set on the wallboard. The prefabricated wallboard of the utility model is a large prefabricated wallboard, which is suitable for mechanized construction. A piece of filling wall in a building only needs one prefabricated wallboard or a few prefabricated wallboards to assemble. The demand for human resources is in line with the requirements of construction industrialization. The cost and self-weight of the prefabricated composite wallboard of the utility model are both lower than those of the prefabricated concrete sandwich wallboard. When used for building filling walls, the utility model has better technical and economic indicators, and can accelerate the popularization and application of large prefabricated wallboards.

Description

A prefabricated foam concrete composite wall panel for building infill walls

technical field

The utility model relates to the technical field of water conservancy, in particular to a prefabricated foam concrete composite wallboard used for building filling walls.

Background technique

The development of building filling walls has experienced three generations of wall materials: the first generation is brick filling walls represented by clay bricks; the second generation is block filling walls represented by aerated concrete blocks; Panels are representative of prefabricated wall panels to fill walls.

The construction of the first and second generation infill walls requires a lot of human resources. The efficiency of masonry is low, and the quality is difficult to guarantee. It does not conform to the development trend of building industrialization, and it is difficult to meet the requirements of green environmental protection. It is gradually being eliminated.

The third-generation prefabricated wallboard filling wall has the advantages of convenient and quick installation, green environmental protection, and meets the requirements of building industrialization. It is the development direction of new wall materials in my country.

At present, the main product type of the third-generation wall materials is prefabricated slats. Prefabricated slats are generally made of lightweight concrete or ALC. The width of the slab is generally 600mm, and the length of the slab is determined according to the height of the building. The construction and installation efficiency of the slat infill wall is higher than that of brick and block infill walls, and it is more suitable for prefabricated buildings, but there are also some disadvantages, mainly as follows:

1) The width of the prefabricated slats is relatively narrow, generally only 600mm, and a piece of infill wall needs to be spliced with multiple slats, so there are many joints on the infill wall of the slats, and the joints between the slats are easy to crack. Affects the beauty and use of buildings. Due to the defects of many joints and easy cracking, prefabricated slats are rarely used for building exterior walls that have strict cracking requirements.

2) The installation of prefabricated slats is still manually operated, the installation efficiency is low, and it is not suitable for the mechanized construction required by prefabricated buildings.

3) There is generally no steel bar in the prefabricated slab, and the slab itself is brittle and has poor ductility. When an earthquake occurs, the slats are easy to break and collapse suddenly, causing personal injury and property loss.

4) Prefabricated slats generally cannot embed pipelines in advance during production. It is necessary to slot the slats to embed the pipelines on the wall after the slats are installed. Most of the slats are hollow slabs, and slotting will destroy the structural safety of the slats. Generally, slotting is not allowed, so when slats are used as filling walls, it will make it difficult to slot the pre-embedded pipelines in the later stage.

Another type of third-generation wall material is precast concrete sandwich wall panels. The middle of the precast concrete sandwich wall panels is a layer of insulation materials such as EPS. Both sides of the wall panels are reinforced concrete surfaces. Connect with high thermal resistance ties. Precast concrete sandwich wall panels are currently mainly used for building exterior walls. The main disadvantages of precast concrete sandwich wall panels when used to fill walls are as follows:

1) The production of prefabricated concrete sandwich wall panels requires large-scale equipment. The product is heavy and costly. Compared with prefabricated slats, it has no technical and economic advantages when used as building filling walls. Therefore, it is generally only used for thermal insulation and crack resistance. building exterior walls.

2) The core board of prefabricated concrete sandwich wall panels is generally EPS organic insulation material. Since EPS is an organic material, it cannot meet the requirements of non-combustible A-level fireproof materials, and its use is limited in some occasions with high fire protection requirements.

Utility model content

The purpose of this utility model is to provide a prefabricated foam concrete composite wall panel for building filling walls, a new type of prefabrication proposed to solve the requirements of mechanized construction, low cost, high performance and fire prevention for the filling walls of prefabricated buildings. wall panels.

In order to achieve the above purpose, the utility model provides the following technical solutions: a prefabricated foam concrete composite wallboard for building filling walls, which is characterized in that: foam concrete is used as the core board, the surface of the wall board is compounded with a concrete surface layer, and the inner wall board There are hidden beams, Ω-shaped grooves are provided at the splicing position of the wall panels, and hanging rings and support holes are set on the wall panels.

The core slab foam concrete is a low-density foam concrete with a density not greater than 250kg/m3.

Fine stone concrete is used; the thickness of the surface layer is 20mm-40mm; a single-layer two-way steel wire mesh is installed in the middle of the thickness of the concrete surface layer.

Dark beams are arranged around the wall panels; when the width of the wall panels is large, one or more hidden beams parallel to the height direction of the wall panels are arranged inside the wall panels; Stirrups perpendicular to the beam direction.

The Ω-shaped groove is located at the splicing position of the wallboard; the Ω-shaped groove is parallel to the height direction of the wallboard; there can be one or more Ω-shaped grooves in one splicing position; the cross-sectional shape of the Ω-shaped groove is a larger half circle whose opening width is smaller than the diameter.

Each wall panel is provided with at least two hanging rings, and the two hanging rings are located on the top of the hidden beams on both sides of the wall panel; Flush, with a concave semi-circular groove around the ring to allow the ring to show through the wall panel.

Each wall panel has at least two support holes, which are located at the upper left corner and upper right corner of the wall panel; if the wall panel is wider, a support hole can be set in the middle of the wall panel; the support hole is a through hole with a diameter of 25mm; the axis of the support hole perpendicular to the wall surface.

The joints between the prefabricated wall panels are connected by filling the seams between the wall panels with anti-crack mortar.

The connection between the prefabricated wall panels and the left, right and upper cast-in-place components is connected by using the prefabricated wall panels as part of the formwork of the post-cast components and directly pouring concrete.

The connection between the prefabricated wall panels and the lower components and the surrounding prefabricated components is connected by filling the joints between the wall panels and the surrounding components with anti-crack mortar.

Compared with the prior art, the beneficial effects of the utility model are:

1) The prefabricated wall panels of this utility model are large prefabricated wall panels, which are suitable for mechanized construction. A piece of infill wall in a building only needs one prefabricated wall panel or a few prefabricated wall panels to assemble, and the installation efficiency is higher than that of strip panels, which can reduce construction On-site human resource requirements meet the requirements of construction industrialization.

2) The cost and self-weight of the prefabricated composite wallboard of the utility model are both lower than that of the prefabricated concrete sandwich wallboard, and it has better technical and economic indicators when used in building filling walls, and can accelerate the popularization and application of large prefabricated wallboards.

3) The prefabricated wall panels of this utility model meet the requirements of Class A fireproof materials, and the places of use are not limited.

4) The prefabricated wall panels of the present utility model have good crack resistance, which can be used not only for the interior walls of buildings but also for the exterior walls of buildings.

5) The prefabricated wall panels of the present invention have good integrity and ductility, are not easily damaged during earthquakes, and have good seismic performance.

6) The prefabricated wall panel of the present utility model can pre-embed the pipeline in the wall panel, and there is no need to slot and embed the pipeline after the wall panel is installed.

Description of drawings

Figure 1 is the front elevation view of the prefabricated composite wall panel,

Figure 2 is a vertical section view of the prefabricated composite wall panel,

Figure 3 is a vertical section reinforcement diagram of prefabricated composite wall panels,

Figure 4 is a horizontal section view of the prefabricated composite wall panel,

Figure 5 is a horizontal cross-sectional reinforcement diagram of prefabricated composite wall panels,

Figure 6 is a horizontal cross-sectional view of prefabricated composite wall panels and joints between prefabricated composite wall panels,

Figure 7 is a horizontal cross-sectional view of the joint between the prefabricated composite wallboard and the cast-in-place component.

In the figure: 1-core board, 2-concrete surface layer, 3-reinforced concrete concealed beam, 4-Ω-shaped groove, 5-hanging ring, 6-support hole, 7-semicircular groove, 8-steel mesh, 9- Concealed beam longitudinal reinforcement, 10-stirrup, 11-crack-resistant mortar, 12-prefabricated wall panel, 13-cast-in-place concrete component.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

A prefabricated foam concrete composite wall panel for building filling walls, characterized in that: foam concrete is used as the core panel 1, the wall panel surface is a composite concrete surface layer 2, there is a hidden beam 3 inside the wall panel, and the splicing position of the wall panel is set There is an Ω-shaped groove 4, and a suspension ring 5 and a support hole 6 are arranged on the wallboard.

The core slab foam concrete is a low-density foam concrete with a density not greater than 250kg/m3.

Fine stone concrete is used; the thickness of the surface layer is 20mm-40mm; a single-layer two-way steel wire mesh 8 is set in the middle of the thickness of the concrete surface layer.

Hidden beams 3 are arranged around the wall panels; when the width of the wall panels is large, one or more hidden beams parallel to the height direction of the wall panels are arranged inside the wall panels; Stirrups 10 perpendicular to the hidden beam direction.

The Ω-shaped groove is located at the splicing position of the wallboard; the Ω-shaped groove is parallel to the height direction of the wallboard; there can be one or more Ω-shaped grooves in one splicing position; the cross-sectional shape of the Ω-shaped groove is a larger half circle whose opening width is smaller than the diameter.

Each wall panel is provided with at least two hanging rings, and the two hanging rings are located on the top of the hidden beams on both sides of the wall panel; Even, there is a concave semicircular groove 7 around the suspension ring, so that the suspension ring exposes the wallboard.

Each wall panel has at least two support holes, which are located at the upper left corner and upper right corner of the wall panel; if the wall panel is wider, a support hole can be set in the middle of the wall panel; the support hole is a through hole with a diameter of 25mm; the axis of the support hole perpendicular to the wall surface.

The joints between the prefabricated wall panels are connected by filling the seams between the wall panels with anti-crack mortar 11 .

The connection between the prefabricated wallboard 12 and the left, right and upper cast-in-place concrete components 13 is connected by using the prefabricated wallboard as a partial formwork of the post-casting component and directly pouring concrete.

The connection between the prefabricated wall panels and the lower components and the surrounding prefabricated components is connected by filling the joints between the wall panels and the surrounding components with anti-crack mortar.

Production of prefabricated wall panels at the factory

1) The prefabricated wall panels are produced with flat molds in the prefabrication factory, and the molds for the prefabricated wall panels are supported according to the size of the prefabricated wall panels.

2) Forming method of the Ω-shaped groove at the joint of the wall panel: set a movable and extractable round steel rod at the position of the Ω-shaped groove in the mold, put the round steel rod before pouring the concrete, and pull out the round steel rod after the concrete is solidified. Omega-shaped grooves are formed at the joints of the wallboards.

3) Forming method of the semicircular groove at the suspension ring: place a semicircular EPS filling block at the suspension ring position in the mold, remove the EPS semicircle block after the concrete is poured and solidified, and a semicircular groove can be formed at the suspension ring position.

4) Lay out the steel wire mesh sheets on the lower layer of the prefabricated wall panels and the lower longitudinal reinforcement and stirrups of the concealed beams, and set pads under the reinforcement to control the thickness of the concrete protective layer of the reinforcement.

5) Pouring the concrete under the prefabricated wall panel, using fine stone concrete, and controlling the maximum aggregate particle size of the concrete to not be greater than 1/2 of the thickness of the concrete surface layer.

6) Place the foam concrete core board of the prefabricated wall board before the initial setting of the concrete on the lower layer. The core board is made of low-density foam concrete material with a density not greater than 250kg/m3, and the foam concrete is pre-cut into the shape of the core board according to the required size .

7) Arrange the steel wire mesh on the upper layer of the prefabricated wall panel and the upper longitudinal reinforcement of the concealed beam, and bind them with the stirrup of the concealed beam.

8) The concrete for pouring the prefabricated wall panel concealed beam and the concrete for the upper layer shall be made of fine stone concrete, and the maximum aggregate particle size of the concrete shall not be greater than 1/2 of the thickness of the concrete surface layer.

9) Curing the concrete of the prefabricated wall panel to the demoulding strength.

10) Release the prefabricated wall panels from the mould.

11) Prefabricated wall panels are cured to design strength after demoulding.

12) Inspect the quality of prefabricated wallboards. Unqualified products need to be repaired or scrapped, and those that pass the inspection are put into the storage yard for storage.

Hoisting and transportation of prefabricated wall panels:

1) The prefabricated wall panel is hoisted with a special spreader, and the hook of the special spreader is fixed on the wall panel ring.

2) The prefabricated wall panels are transported to the construction site by special transport vehicles.

3 On-site installation of prefabricated wall panels

1) Clean up the working surface of the construction site.

2) The installation of large prefabricated infill wall panels is different from that of ordinary strips. Large prefabricated wall panels need to be installed before the surrounding structural components. Locate and lay out the lines where the prefabricated wall panels need to be installed.

3) Hoist the prefabricated wall panels in place with hoisting machinery and special spreaders.

4) The splicing between prefabricated wall panels is spliced by the method of anti-crack mortar caulking. Apply anti-cracking mortar on the splicing surface of the wallboard. The mortar should fill the Ω-shaped groove on the splicing surface of the prefabricated wallboard, and squeeze the wallboard toward the splicing surface so that the mortar is evenly and fully distributed in the joints of the splicing surface. Spill, scrape off excess mortar with a spatula.

5) Fix the upper end of the temporary support rod to the support hole of the prefabricated wall panel with the cross bolt, fix the lower end of the temporary support on the floor, and temporarily fix the prefabricated wall panel to ensure the stability of the prefabricated wall panel during construction.

6) If there are cast-in-place components around the prefabricated wall panels, formwork for the cast-in-place components around the prefabricated wall panels shall be supported.

7) Arrange the steel bars of the cast-in-place components around the prefabricated wall panels.

8) Pouring concrete for cast-in-place components around the prefabricated wall panels.

9) Conserve the concrete of the cast-in-place components around the prefabricated wall panels to the design strength.

10) Remove the formwork of the cast-in-place concrete components around the prefabricated wall panels.

11) Remove the temporary support of the prefabricated wall panels.

12) Paint the surface of prefabricated wall panels and surrounding cast-in-place components.

Claims (6)

1. A prefabricated foam concrete composite wall panel for building filling walls, characterized in that: foam concrete is used as the core panel, the composite concrete surface layer on the surface of the wall panel, hidden beams are arranged in the wall panel, and the splicing position of the wall panel is provided with Ω Shaped grooves, rings and support holes are set on the wall panels. 2. A prefabricated foam concrete composite wall panel for building filling walls according to claim 1, characterized in that: the foam concrete of the core plate is low-density foam concrete. 3. A prefabricated foam concrete composite wall panel for building filling walls according to claim 1, characterized in that: fine stone concrete is used; the thickness of the surface layer is 20mm-40mm; a single layer is set in the middle of the thickness of the concrete surface layer Two-way steel mesh sheet. 4. A prefabricated foam concrete composite wall panel for building filling walls according to claim 1, characterized in that: hidden beams are arranged around the wall panel; Parallel concealed beams; inside the concealed beams there are longitudinal reinforcements along the direction of the concealed beams and stirrups perpendicular to the direction of the concealed beams. 5. A prefabricated foam concrete composite wallboard for building filling walls according to claim 1, characterized in that: the Ω-shaped groove is located at the splicing position of the wallboard; the Ω-shaped groove is parallel to the height direction of the wallboard; a splicing There are one or more Ω-shaped grooves; the cross-sectional shape of the Ω-shaped groove is more than half a circle whose opening width is smaller than the diameter. 6. A prefabricated foam concrete composite wall panel for building filling walls according to claim 1, characterized in that: each wall panel is provided with at least two suspension rings, and the two suspension rings are located at the ends of the hidden beams on both sides of the wall panel. Top; rings can be set on the top of the middle hidden beam; the top surface of the rings is flush with the top surface of the wallboard, and there is a concave semicircular groove around the rings, so that the rings are exposed to the wallboard.