Prefabricated wall body and wall beam connecting joint

Abstract

The utility model provides a prefabricated wall body and a wall beam connecting joint. The prefabricated wall body comprises two wall plates which are opposite to each other to form a cavity; a keel framework is arranged in the cavity and divides the cavity into a lower pre-filling area and a top cast-in-place area; at least part of the lower pre-filling area is pre-filled with a thermal insulation material; the top cast-in-place area is used for containing a top frame beam with a circulation hole and concrete flowing in through the circulation hole of the top frame beam when a floor slab is cast in place. Through the prefabricated wall body, the top cast-in-place area and the top frame beam with the circulation hole are arranged in a matched mode, after the prefabricated wall body is fixedly connected with the top frame beam with the circulation hole, concrete pouring is conducted on a floor slab connected subsequently on a construction site, and the concrete poured into the floor slab flows into the top frame beam; and the water flows into a top cast-in-place area through the circulating holes of the top frame beam, so that the connection between the top frame beam and the prefabricated wall body is firmer, the integrity is higher, and the shock resistance is better.

Description

Technical Field

[0001] The utility model relates to the technical field of construction, in particular to a prefabricated wall and a wall beam connection node. Background Art

[0002] In the prior art, low-rise civil buildings have a small unit space volume and are generally used for office or residence. They have strict requirements for thermal insulation. Lightweight exterior walls with light steel keels have good thermal insulation effects and are easy to assemble, making them suitable for low-rise civil buildings. At present, light steel keel lightweight exterior walls can be manufactured in two common forms: on-site construction and installation or factory integrated molding. Among them, the on-site construction and installation method cannot meet the needs of rapid construction and shortened construction period; and the light steel keel lightweight exterior walls formed in one piece in the factory, although speeding up the process of on-site construction and installation, the connection nodes between them and the top frame beams are often connected by point connection or embedded steel bars, resulting in the disadvantages of poor stability and seismic resistance, or complex connection nodes. Utility Model Content

[0003] In order to solve the above problems, an object of the embodiments of the present utility model is to provide a prefabricated wall and wall beam connection node.

[0004] In a first aspect, an embodiment of the utility model provides a prefabricated wall, comprising: two wall panels facing each other to form a cavity; a keel frame is arranged in the cavity, and the keel frame divides the cavity into a lower pre-filled area and a top cast-in-place area; at least a part of the lower pre-filled area is pre-filled with insulation material; the top cast-in-place area is used to accommodate a top frame beam with a flow hole and concrete flowing in through the flow hole of the top frame beam when the floor slab is cast on site.

[0005] Optionally, the keel structure includes: a top keel, a ground keel, a cross-bracing keel and a vertical keel; the cross-bracing keel is arranged close to and parallel to the bottom of the top keel along the height direction of the wall panel, and the upper cavity of the cross-bracing keel is the top cast-in-place area.

[0006] Optionally, the cavity between the transverse bracing keel and the ground keel is the lower pre-filled area.

[0007] Optionally, the top keel is provided with a plurality of holes in a horizontal direction corresponding one to one with the flow holes of the top frame beam.

[0008] Optionally, the wallboard is cement fiberboard.

[0009] Optionally, the prefabricated wall further comprises: a connecting piece, and the keel structure is fixedly connected to the wall panel via the connecting piece.

[0010] Optionally, the thermal insulation material filled inside the lower pre-filled area is foamed concrete.

[0011] Optionally, the prefabricated wall also includes: reserved installation openings for bay windows and / or doors.

[0012] In a second aspect, an embodiment of the utility model further provides a wall-beam connection node, comprising: a prefabricated wall as described above, a top frame beam with a circulation hole, and a fixed connecting piece; the prefabricated wall is fixedly connected to the top frame beam via the fixed connecting piece.

[0013] Optionally, the wall beam connection node further comprises: concrete that flows into the top cast-in-place area of ​​the prefabricated wall through the flow holes of the top frame beam when the floor slab is cast on site.

[0014] Optionally, a plurality of the flow holes are provided on the top frame beam parallel to the horizontal surface of the prefabricated wall.

[0015] Optionally, the top frame beam is a C-shaped steel beam or a box-shaped steel beam.

[0016] In the solution provided in the first aspect of the embodiment of the utility model, the cavity formed inside the two wall panels is divided by the keel structure to obtain the lower pre-filled area and the top cast-in-place area respectively. The lower pre-filled area is used to fill the wall in a large area to meet the requirements of thermal insulation; and the light steel frame concrete structure is reasonably used. The secondary pouring of concrete is required on site, and the floor slab is usually required to be poured. The top cast-in-place area is matched with the top frame beam with the circulation hole. After the prefabricated wall is fixedly connected to the top frame beam with the circulation hole, the concrete poured into the floor slab can be poured into the top frame beam by pouring concrete on the subsequent connected floor slab at the construction site, and then flow into the top cast-in-place area through the circulation hole of the top frame beam, so that the connection between the top frame beam and the prefabricated wall is more solid, more integrated, and more earthquake-resistant.

[0017] In the solution provided in the second aspect of the embodiment of the utility model, the strength of the top of the prefabricated wall is firstly ensured, and then the connection strength between it and the top frame beam is further ensured, so that when the prefabricated wall and the top frame beam transfer load, the top edge of the prefabricated wall will not crack, which will affect the stress performance of the wall. The wall beam connection node can realize the firm assembly of the assembled wall panel and the building structure component.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic structural diagram of a prefabricated wall provided by an embodiment of the utility model is shown;

[0021] Figure 2 A schematic diagram of a prefabricated wall provided by an embodiment of the utility model is shown;

[0022] Figure 3 A schematic diagram showing another division of the lower pre-filled area in the prefabricated wall provided by an embodiment of the utility model is shown;

[0023] Figure 4 A schematic diagram of a structure in which a prefabricated wall and a top frame beam are fixedly connected is shown in an embodiment of the utility model;

[0024] Figure 5 A schematic diagram showing the specific structure of the top keel in the prefabricated wall provided by the embodiment of the utility model is shown;

[0025] Figure 6 A schematic structural diagram of a prefabricated wall with a reserved door opening provided by an embodiment of the utility model is shown;

[0026] Figure 7 A schematic structural diagram of a wall beam connection node provided by an embodiment of the utility model is shown;

[0027] Figure 8 A schematic structural diagram of a top frame beam in a wall beam connection node provided by an embodiment of the utility model is shown.

[0028] icon:

[0029] 1- wall panel, 2- keel structure, 3- lower pre-filled area, 4- top cast-in-place area, 21- top keel, 22- ground keel, 23- horizontal bracing keel, 24- vertical keel, 100- prefabricated wall, 200- top frame beam, 300- circulation hole, C- prefabricated bay window, M- door opening. DETAILED DESCRIPTION

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The utility model embodiment provides a prefabricated wall, such as Figure 1 As shown, the prefabricated wall is manufactured in advance in the factory and can be used in a light steel frame concrete structure building system. The prefabricated wall specifically includes: two wall panels 1 facing each other to form a cavity, one wall panel 1 is used as an inner wall panel of the prefabricated wall and has a relatively low height, and the other wall panel 1 is used as an outer wall panel of the prefabricated wall and has a relatively high height. Optionally, the wall panel 1 is a cement fiber board. Figure 2 As shown, Figure 2 The figure shows the internal structure of the prefabricated wall. A keel frame 2 is arranged in the cavity formed by the wall panel 1, and the keel frame 2 divides the cavity into a lower pre-filled area 3 and a top cast-in-place area 4. The area of ​​the lower pre-filled area 3 is larger than the top cast-in-place area 4, and at least part of the lower pre-filled area 3 is pre-filled with insulation material. For example, the lower pre-filled area 3 of the prefabricated wall can be completely filled with insulation material, such as Figure 2 The areas selected by the dashed line box shown in the figure can be filled with the insulation material; or, the insulation material can be filled only in a part of the lower pre-filled area 3, such as Figure 3 The area selected by the dashed dashed box is filled with insulation material only in this area. The embodiment of the utility model can make adaptive adjustments to the position where the insulation material needs to be filled in the lower pre-filled area 3 according to actual conditions. Optionally, the insulation material filled in the lower pre-filled area 3 is foamed concrete to improve the thermal insulation performance of the prefabricated wall.

[0034] It should be noted that, in the embodiment of the utility model, the keel structure 2 can be first fixedly connected to the surface of the wall panel 1 used as the inner wall panel of the prefabricated wall in the factory, and the wall panel 1 connected with the keel structure 2 is placed horizontally on the ground with one side surface facing upward, and the insulation material is filled into at least part of the lower pre-filled area 3 by flat mold casting, and smoothed to prevent the expansion mold from cracking. Finally, the wall panel 1 used as the outer wall panel of the prefabricated wall is fixedly installed with the other part of the wall structure filled with insulation material, so as to form a prefabricated wall. Optionally, the prefabricated wall also includes a connecting piece, that is, the keel structure 2 is fixedly connected to the wall panel 1 through a connecting piece, and the connecting piece can be a nail, a self-tapping screw or an expansion bolt, etc., which is not limited in the embodiment of the utility model.

[0035] Further, the specific position of the top cast-in-place area 4 of the prefabricated wall divided by the keel structure 2 can be seen in Figure 2 or Figure 3 As shown (framed by dotted lines in the form of dots), the top cast-in-place area 4 is located at the top of the prefabricated wall along its height direction, and this area does not need to be filled and poured in advance in the factory, but needs to be poured on-site at the construction site. In the embodiment of the utility model, in order to make the prefabricated wall better adaptable to other horizontal building components, such as assembled beams, floor slabs and other building components, the top cast-in-place area 4 not only includes a part of the cavity for pouring concrete on site, but also includes an area that can be fixedly connected to other horizontal building components. Figure 4 As shown, the top edge area of ​​the top cast-in-place area 4 (specifically, the inner side of the wall panel 1 with a lower height) can be fitted and fixed on the side surface of the top frame beam of the frame structure ( Figure 4 The top frame beam is represented by the reference numeral 200 in the figure), thereby realizing the installation between the prefabricated wall and the top frame beam, and ensuring that the top frame beam is not exposed indoors.

[0036] Secondly, since the top edge area of ​​the top cast-in-place area 4 has been used for fitting and installation with the top frame beam, the remaining area can be used to accommodate the concrete poured in on-site. It can be understood that the light steel frame concrete structure also needs to be poured for the second time on site, usually for the pouring of the floor slab. Therefore, the embodiment of the utility model reasonably utilizes this construction feature and uses the prefabricated wall body in conjunction with the top frame beam with the flow hole. That is to say, when the top edge area of ​​the top cast-in-place area 4 of the prefabricated wall body is fixedly connected with the top frame beam with the flow hole, during the second pouring of concrete for the subsequent connected floor slab on site, the concrete poured inside the floor slab can flow to the top frame beam located at the lower edge of the floor slab, and flow downward into the remaining cavity of the top cast-in-place area 4 of the prefabricated wall panel through the flow hole of the top frame beam. After the concrete solidifies, it not only strengthens the strength of the prefabricated wall body itself, but also makes the prefabricated wall body and the top frame beam have better integrity and stronger rigidity. Therefore, in the prefabricated wall provided in the embodiment of the utility model, the top cast-in-place area 4 thereof can accommodate the top frame beam with the flow holes and the concrete flowing in through the flow holes of the top frame beam when the floor slab is cast on site.

[0037] The prefabricated wall provided by the embodiment of the utility model divides the cavity formed inside the two wall panels 1 by the keel structure 2, and obtains the lower pre-filled area 3 and the top cast-in-place area 4 respectively. The lower pre-filled area 3 is used to fill the wall in a large area to meet the requirements of thermal insulation; and the construction characteristics that the light steel frame concrete structure needs to be poured for the second time on site, and the floor slab is usually poured, are reasonably utilized, and the top cast-in-place area 4 is matched with the top frame beam with the circulation hole. When the prefabricated wall is fixedly connected with the top frame beam with the circulation hole, by pouring concrete on the subsequently connected floor slab at the construction site, the concrete poured into the floor slab can flow into the top frame beam, and flow into the top cast-in-place area 4 through the circulation hole of the top frame beam, so that the connection between the top frame beam and the prefabricated wall is more solid, more integrated, and better in earthquake resistance.

[0038] Alternatively, if Figure 2As shown, the keel structure 2 includes: a top keel 21, a ground keel 22, a cross-bracing keel 23 and a vertical keel 24. Among them, the ground keel 22 is arranged on the inner side of the bottom of the wall panel 1, and is arranged opposite to the top keel 21. The top keel 21 can be arranged at a preset distance below the elevation of the wall panel 1 facing the indoor side, and the preset distance can be consistent with the side width of the top frame beam with flow holes installed later, that is, the embodiment of the utility model can use the top keel 21 to reserve and plan the position of the top frame beam with flow holes installed later, and the top keel 21 can be set against the bottom of the reserved top frame beam position. In addition, a plurality of vertical keels 24 are vertically arranged between the top keel 21 and the ground keel 22. The cross-bracing keel 23 is arranged close to and parallel to the bottom of the top keel 21 along the height direction of the wall panel 1. In other words, the cross-bracing keel 23 is arranged close to the top keel 21 and is located below the top keel 21. In the embodiment of the utility model, the upper cavity of the horizontal bracing keel 23 is divided into the top cast-in-place area 4. Optionally, as Figure 3 As shown, the cavity between the transverse bracing keel 23 and the ground keel 22 is the lower pre-filled area 3, that is, the area enclosed by the transverse bracing keel 23, the two vertical keels 24 connected to the two ends of the transverse bracing keel 23, and the ground keel 22 is the lower pre-filled area 3.

[0039] Among them, the above four kinds of keels can be fixedly connected by welding to form an integrated structure to support the prefabricated wall structure and serve as a partition member for dividing the lower pre-filled area 3 and the top cast-in-place area 4. Specifically, the above four kinds of keels can all be C-shaped channel steels, the top keel 21 is opened downward, the ground keel 22 is opened upward, the cross-bracing keel 23 is opened upward, and the vertical keel 24 is opened perpendicular to the wall panel 1. The embodiment of the utility model can directly use the cross-bracing keel 23 in the keel structure 2 as the boundary for dividing the top cast-in-place area 4, that is, the top cast-in-place area 4 is directly divided by the cross-bracing keel 23, and there is no need to set up an additional isolation device for separating different areas. It should be noted that the number of cross-bracing keels 23 can also be multiple, and multiple cross-bracing keels 23 are fixedly connected to form an integral structure with a cross-section of the sum of the cross-sections of multiple cross-bracing keels 23, that is, multiple cross-bracing keels 23 are combined to form a cross-bracing keel 23 with a larger cross-sectional area and a thicker tubular shape.

[0040] In the embodiment of the utility model, the top keel 21 (arranged against the bottom of the top frame beam) located at the top of the wall 1 in the keel structure 2 not only needs to shape the prefabricated wall support structure and reserve and divide the top frame beam installation position, but also needs to have the ability to allow concrete to flow to the top cast-in-place area 4 formed between the top keel 21 and the cross-bracing keel 23 for accommodating cast-in-place concrete, that is, the top keel 21 also needs to have the ability to allow concrete to pass through its interior. Based on this, optionally, as Figure 5As shown, the top keel 21 also needs to have a number of holes corresponding to the flow holes of the top frame beam in the horizontal direction, so that when the floor slab is cast on site, the concrete flowing in through the flow holes of the top frame beam can flow smoothly into the top cast-in-place area 4 between the top keel 21 and the cross-bracing keel 23 through the holes on the surface of the top keel 21. In addition, the strength of the prefabricated wall itself can be improved based on the concrete poured on site, as well as the connection strength and integrity between the prefabricated wall and the horizontal building components.

[0041] Optionally, the prefabricated wall also includes: reserved bay windows and / or door installation openings, so that prefabricated bay windows (such as Figure 1 As shown in the figure, marked as C) is installed in place, or the door opening (such as Figure 6 As shown, the columns marked with M on both sides are installed in place to obtain a reserved door opening.

[0042] The utility model also provides a wall beam connection node, such as Figure 7 As shown, the wall beam connection node includes: any one of the prefabricated wall 100 described above, a top frame beam 200 with a flow hole 300, and a fixed connection member; the prefabricated wall 100 is connected to the wall by the fixed connection member ( Figure 7 The top frame beam 200 is fixedly connected to the top frame beam 200 (not directly shown in the figure). In the embodiment of the utility model, the prefabricated wall 100 can be fixedly connected to the top frame beam 200 in advance in the factory through a fixed connector, so that the two form an integral structure. Among them, the fixed connector can be a nail, a self-tapping screw or an expansion bolt, etc. It should be noted that when the top frame beam 200 is fixedly connected to the prefabricated wall 100, there is a top cast-in-place area between the two (or it can also be understood as between the top keel 21 and the cross-bracing keel 23 of the prefabricated wall 100 arranged at the bottom of the top frame beam 200) for pouring concrete at the construction site. The top cast-in-place area can accommodate the concrete that flows into the floor slab, the top frame beam 200, and the flow hole 300 of the top frame beam 200 when pouring the floor slab fixedly connected to the top frame beam 200 later, such as C30 fine stone concrete. After the concrete solidifies, a strong connection node (i.e., the wall beam connection node) is obtained. The wall beam connection node first ensures the strength of the top of the prefabricated wall 100 (such as the strength of the wall itself), and then further ensures the connection strength between it and the top frame beam 200, so that when the prefabricated wall 100 and the top frame beam 200 transfer loads, the top edge of the prefabricated wall 100 will not crack, which will affect the stress performance of the wall. The wall beam connection node can realize the firm assembly of the assembled wall panel and the building structure component.

[0043] Optionally, the wall beam connection node further includes: concrete flowing into the top cast-in-place area of ​​the prefabricated wall 100 through the flow hole 300 of the top frame beam 200 when the floor slab is cast on site.

[0044] Optionally, the top frame beam 200 is parallel to the horizontal surface of the prefabricated wall 100 to open a plurality of flow holes 300. The embodiment of the utility model does not specifically limit the shape of the flow holes 300. For example, see Figure 7 As shown, the shape of the circulation hole 300 can be an ellipse, or can be any other shape, as long as the size of the circulation hole 300 can allow the cast-in-place concrete to pass through.

[0045] Optionally, the top frame beam 200 is a C-shaped steel beam or a box-shaped steel beam. In the embodiment of the utility model, the top frame beam 200 can be made of a steel plate. Specifically, the steel plate can be directly bent to form a C-shaped steel beam, and further processed to obtain a C-shaped steel beam with flow holes 300 correspondingly opened on the upper and lower short side surfaces (such as Figure 8 as shown), or Figure 7 As shown, two C-shaped steel beams with half holes opened on the upper and lower short edges can also be butt-jointed to form a box-shaped steel beam with a circulation hole 300 .

[0046] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technical solution that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A prefabricated wall, characterized in that: include: Two wall panels (1) facing each other to form a cavity; A keel frame (2) is arranged in the cavity, and the keel frame (2) divides the cavity into a lower pre-filled area (3) and a top cast-in-place area (4); At least a portion of the lower pre-filled area (3) is pre-filled with thermal insulation material; The top cast-in-place area (4) is used to accommodate a top frame beam having a flow hole and concrete flowing in through the flow hole of the top frame beam when the floor slab is cast on site.

2. The prefabricated wall according to claim 1, characterized in that: The keel structure (2) comprises: a top keel (21), a ground keel (22), a cross-bracing keel (23) and a vertical keel (24); The transverse bracing keel (23) is arranged close to and parallel to the bottom of the top keel (21) along the height direction of the wall panel (1), and the upper cavity of the transverse bracing keel (23) is the top cast-in-place area (4).

3. The prefabricated wall according to claim 2, characterized in that: The cavity between the transverse bracing keel (23) and the ground keel (22) is the lower pre-filled area (3).

4. The prefabricated wall according to claim 2, characterized in that: The top keel (21) is provided with a plurality of holes in a horizontal direction corresponding to the flow holes of the top frame beam.

5. The prefabricated wall according to claim 1, characterized in that: The wallboard (1) is a cement fiberboard.

6. The prefabricated wall according to claim 1, characterized in that: Also includes: A connecting piece, wherein the keel frame (2) is fixedly connected to the wall panel (1) via the connecting piece.

7. The prefabricated wall according to claim 1, characterized in that: The thermal insulation material filled inside the lower pre-filled area (3) is foamed concrete.

8. The prefabricated wall according to claim 1, characterized in that: Also includes: Reserved openings for bay windows and / or doors.

9. A wall beam connection node, characterized in that: include: A prefabricated wall (100), a top frame beam (200) having a circulation hole (300), and a fixed connection member as described in any one of claims 1 to 8; the prefabricated wall (100) is fixedly connected to the top frame beam (200) via the fixed connection member.

10. The wall beam connection node according to claim 9, characterized in that: Also includes: When the floor slab is cast on site, concrete flows into the top cast-in-place area of ​​the prefabricated wall (100) through the flow hole (300) of the top frame beam (200).

11. The wall beam connection node according to claim 9, characterized in that: The top frame beam (200) is provided with a plurality of flow holes (300) on a surface parallel to the horizontal direction of the prefabricated wall (100).

12. The wall beam connection node according to claim 9, characterized in that: The top frame beam (200) is a C-shaped steel beam or a box-shaped steel beam.

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