Prefabricated outer wall and wall column connecting joint

Abstract

The utility model provides a prefabricated outer wall and a wall column connecting joint. The prefabricated outer wall comprises a wallboard assembly and a keel frame. The containing cavities, located on the two sides of the wallboard assembly in the horizontal direction, in the keel frame are reserved cavities, and the containing cavity in the middle is a heat preservation cavity. The reserved cavity is used for containing a structural column with a side wall grouting hole and concrete flowing in through the side wall grouting hole when the structural column is cast in place. According to the prefabricated outer wall, the cavity in the wallboard assembly is divided by the keel frame to obtain the heat preservation cavity and the reserved cavity, and the heat preservation cavity is used for large-area filling of the wall body so as to meet the requirement for heat preservation and heat insulation; the reserved cavities on the two sides are matched with the structural column with the side wall grouting holes, concrete pouring is conducted on the structural column on the construction site, concrete flows into the reserved cavities through the side wall grouting holes, the connection firmness degree between the structural column and the prefabricated outer wall is improved, 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 exterior wall and a wall column 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 factory-integrated light steel keel lightweight exterior walls, although they speed up the process of on-site construction and installation, the connection nodes between them and the corner structural columns 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 exterior wall and wall column connection node.

[0004] In the first aspect, an embodiment of the utility model provides a prefabricated exterior wall, comprising: a wall panel assembly and a keel frame; the keel frame is arranged inside the wall panel assembly, dividing the interior of the prefabricated exterior wall into two types of accommodating cavities; the accommodating cavities on both sides of the wall panel assembly in the keel frame along the horizontal direction are reserved cavities, and the accommodating cavity in the middle position is an insulation cavity; the reserved cavity is used to accommodate a structural column with a side wall grouting hole and concrete flowing in through the side wall grouting hole when the structural column is cast on site.

[0005] Optionally, a dimension of the heat preservation cavity along the height direction is smaller than a dimension of the keel frame along the height direction.

[0006] Optionally, the wall panel assembly includes two cement fiber boards.

[0007] Optionally, the prefabricated exterior wall further includes: a connecting piece, through which the keel frame is fixedly connected to the wall panel assembly.

[0008] Optionally, the interior of the insulation cavity is filled with foamed concrete.

[0009] Optionally, the keel frame includes: a top keel, a ground keel and a vertical keel; the areas opposite to the vertical keels located on both sides of the keel frame in the horizontal direction are the reserved cavities.

[0010] Optionally, the keel frame further comprises: a limiting vertical keel, wherein the limiting vertical keel is disposed against the side wall of the structural column, and the limiting vertical keel has holes corresponding one-to-one to the grouting holes of the side wall of the structural column.

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

[0012] In the second aspect, an embodiment of the utility model also provides a wall-column connection node, such as any of the prefabricated exterior walls, structural columns with side wall grouting holes, and fixed connectors as described above; the prefabricated exterior wall is fixedly connected to the structural column via the fixed connector; a reserved cavity is provided between the structural column and the prefabricated exterior wall.

[0013] Optionally, the wall column connection node further comprises: concrete that flows into the reserved cavity of the prefabricated exterior wall through the side wall grouting hole when the structural column is cast on site.

[0014] Optionally, a plurality of side wall grouting holes are provided on the side wall of the structural column facing the interior of the prefabricated exterior wall along the height direction.

[0015] Optionally, the structural column is an L-shaped steel column.

[0016] Optionally, the cross-sectional shape of the structural column is a closed shape or an open shape.

[0017] Optionally, the structural column includes: a connector, the lower end of which is fixedly connected to the inner side of the top of the structural column; the upper end of the connector protrudes from the top of the structural column to be inserted into the bottom of the structural column of the upper adjacent prefabricated exterior wall to form a connection.

[0018] Optionally, the connector includes a plug-in board and a plug-in column; the plug-in board is fixedly connected to the top of the structural column, and a hole for accommodating the plug-in column is dug on the surface of the plug-in board, the lower end of the plug-in column passes through the hole and is located on the inner side of the top of the structural column, and the upper end of the plug-in column protrudes from the plug-in board.

[0019] Optionally, a plurality of flow holes are provided on the side wall of the plug-in column along the height direction.

[0020] In the solution provided in the first aspect of the embodiment of the utility model, the cavity inside the wall panel assembly is divided by a keel frame to obtain an insulation cavity and a reserved cavity. The insulation cavity is used to fill a large area of ​​the wall to meet the requirements of thermal insulation; and the reserved cavities on both sides are used to cooperate with the structural columns with side wall grouting holes. When the prefabricated exterior wall is fixedly connected to the structural column with the side wall grouting holes, the concrete poured into the structural column can flow into the reserved cavity through the side wall grouting holes by pouring concrete on the structural column at the construction site, so that the connection between the structural column and the prefabricated exterior wall is more firm and has better earthquake resistance.

[0021] In the solution provided in the second aspect of the embodiment of the utility model, after the structural column and the prefabricated exterior wall are fixedly connected, there is a reserved cavity between the two, so that when the concrete is poured at the construction site later, the reserved cavity can accommodate the concrete poured into the structural column and flowing in through the side wall grouting hole, and a strong connection node (i.e., the wall column connection node) is obtained after the concrete solidifies. The wall column connection node first ensures the strength of both sides of the prefabricated exterior wall (such as the strength of the wall itself), and then further ensures the connection strength between it and the structural column, so that when the prefabricated exterior wall and the structural column transfer load, the edge of the prefabricated exterior wall will not crack, affecting the stress performance of the wall. The wall column connection node can realize the firm assembly of the assembled wall panel and the building structural component.

[0022] 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

[0023] 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.

[0024] Figure 1 A cross-sectional view of a prefabricated exterior wall provided by an embodiment of the utility model is shown;

[0025] Figure 2 A schematic diagram of the structure of the prefabricated exterior wall provided by an embodiment of the utility model is shown;

[0026] Figure 3 A schematic diagram showing a fixed connection between a prefabricated exterior wall provided by an embodiment of the utility model and a structural column with a side wall grouting hole is shown;

[0027] Figure 4 A schematic diagram of a prefabricated exterior wall with position-limiting vertical keels provided in an embodiment of the utility model is shown;

[0028] Figure 5 A side view schematic diagram of a position-limiting vertical keel in a prefabricated exterior wall provided by an embodiment of the utility model is shown;

[0029] Figure 6 A schematic structural diagram of a prefabricated exterior wall with a reserved door opening installation position provided by an embodiment of the utility model is shown;

[0030] Figure 7 A schematic structural diagram of a wall column connection node provided by an embodiment of the utility model is shown;

[0031] Figure 8 A schematic diagram of the structure of a wall column connection node provided by an embodiment of the utility model is shown, in which the structural column is an L-shaped steel column;

[0032] Fig. 9 A schematic diagram showing a wall column connection node provided by an embodiment of the utility model, in which the cross-sectional shape of the structural column is a closed shape;

[0033] Fig.10 A schematic diagram showing a wall column connection node provided by an embodiment of the utility model, in which the cross-sectional shape of the structural column is an open shape;

[0034] Fig.11 A schematic diagram of the structural disassembly of a structural column in a wall column connection node provided by an embodiment of the utility model is shown;

[0035] Fig.12 A schematic diagram of a structural column with a plug-in connector in a wall column connection node provided by an embodiment of the utility model is shown;

[0036] Fig.13 A disassembly schematic diagram of a plug-in connector in a wall column connection node provided by an embodiment of the utility model is shown;

[0037] Fig.14 A schematic diagram showing a plug-in component installed in a structural column in a wall column connection node provided by an embodiment of the utility model;

[0038] Fig.15 A schematic diagram of a combination of a plug-in component in a wall column connection node provided by an embodiment of the utility model is shown;

[0039] Fig.16 A schematic diagram of an L-shaped steel column with an open cross-section in a wall column connection node provided in an embodiment of the utility model is shown.

[0040] icon:

[0041] 1- wall panel assembly, 2- keel frame, 3- insulation cavity, 4- reserved cavity, 21- ceiling keel, 22- ground keel, 23- vertical keel, 24- limited vertical keel, 100- prefabricated exterior wall, 200- structural column, 300- side wall grouting hole, 400- plug-in, 401- plug-in board, 402- plug-in column, C- prefabricated bay window, M- door opening, G- lattice plate. DETAILED DESCRIPTION

[0042] 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.

[0043] 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.

[0044] 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.

[0045] The utility model embodiment provides a prefabricated exterior wall, such as Figure 1 As shown, the prefabricated exterior wall is manufactured in a factory and specifically includes: a wall panel assembly 1 and a keel frame 2. The wall panel assembly 1 is two wall panels arranged opposite to each other, one wall panel is arranged toward the interior (such as Figure 1 As shown), the other wall panel is set towards the outside ( Figure 1 The height of the wall panels facing indoors is lower than that of the wall panels facing outdoors (such as Figure 2As shown). Optionally, the wall panel assembly 1 includes two cement fiber boards. The keel frame 2 is arranged inside the wall panel assembly 1. It can be understood that the wall panel assembly 1 and the keel frame 2 form a "sandwich" structure, that is, one side of the keel frame 2 is fixedly connected to the wall panel arranged toward the indoor in the wall panel assembly 1, and the other side of the keel frame 2 is fixedly connected to the wall panel arranged toward the outdoor in the wall panel assembly 1. In the embodiment of the utility model, the keel frame 2 can be first fixedly connected to the wall panel arranged toward the indoor in the wall panel assembly 1, and then the wall panel arranged toward the outdoor in the wall panel assembly 1 is covered and fixed to the other side of the keel frame 2. Optionally, the keel frame 2 and the wall panel assembly 1 can be fixedly connected by a connector, and the connector can include self-tapping screws, nails, expansion bolts, etc.

[0046] Furthermore, the keel frame 2 divides the interior of the prefabricated exterior wall into two types of accommodating cavities, one of which is the heat preservation cavity 3 and the other is the reserved cavity 4. It can be understood that if there is no keel frame 2, there is only one through cavity inside the wall panel assembly 1, that is, the area where the two wall panels are opposite. Therefore, the embodiment of the utility model can divide the interior of the prefabricated exterior wall (the internal cavity of the wall panel assembly 1) into different areas by setting the keel frame 2 inside the wall panel assembly 1, and each area corresponds to a type of accommodating cavity, that is, the heat preservation cavity 3 and the reserved cavity 4 are obtained. Figure 1 As shown, the accommodating cavities on both sides of the wall panel assembly 1 in the horizontal direction in the keel frame 2 are reserved cavities 4. In other words, the two side areas in the wall panel assembly 1 that are not surrounded by the keel frame 2 in the horizontal direction are reserved cavities 4. Figure 3 As shown, the reserved cavities 4 on both sides can not only connect the wall panel assembly 1 with the structural columns on both sides ( Figure 3 In the figure, the reference numeral 200 represents a structural column). After the wall panel assembly 1 is connected to the structural column, a part of the cavity is still left in the reserved cavity 4. When the structural column connected to the prefabricated exterior wall is a structural column with a side wall grouting hole, the part of the cavity left in the reserved cavity 4 can also be used to accommodate the concrete flowing in through the side wall grouting hole when the structural column is cast on site ( Figure 3 The short horizontal line filling pattern represents cast-in-place concrete), so that the prefabricated exterior wall can be further connected to the structural columns on both sides to form an integrated structure and improve the integrity.

[0047] In addition, the accommodation cavity in the middle of the keel frame 2 in the horizontal direction is the heat preservation cavity 3. Figure 1As shown, in the horizontal direction of the wall panel assembly 1, the reserved cavities 4 on both sides are planed off, and the remaining accommodating cavity in the middle is the insulation cavity 3. As the name implies, the insulation cavity 3 is a cavity filled with insulation material. After the installation of the keel frame 2 and the wall panels facing the indoor side is completed, the insulation material can be filled in the insulation cavity 3 in the embodiment of the utility model, and then the wall panels facing the outdoor side are covered and installed to form a prefabricated wall with empty sides. Optionally, the insulation material filled in the insulation cavity 3 can be foamed concrete. Using foamed concrete to fill a large area of ​​the prefabricated exterior wall can make the prefabricated exterior wall have the characteristics of light weight and high strength, sound insulation and heat insulation, low elasticity and earthquake resistance, durable fire resistance, fluid plasticity, and green environmental protection.

[0048] The prefabricated exterior wall provided by the embodiment of the utility model divides the cavity inside the wall panel assembly 1 by the keel frame 2, and obtains the insulation cavity 3 and the reserved cavity 4 respectively. The insulation cavity 3 is used to fill the wall with a large area to meet the requirements of thermal insulation; and the reserved cavities 4 on both sides are used to cooperate with the structural columns with side wall grouting holes. When the prefabricated exterior wall is fixedly connected with the structural column with the side wall grouting holes, by pouring concrete on the structural column at the construction site, the concrete poured into the structural column can flow into the reserved cavity 4 through the side wall grouting holes, so that the connection between the structural column and the prefabricated exterior wall is more firm and the earthquake resistance is better.

[0049] The embodiment of the utility model can also flexibly use the keel frame 2 to adjust the area of ​​the insulation cavity 3, that is, the keel frame 2 is adaptively divided into a more reasonable middle position to meet the connection requirements of building components or cost requirements and other factors. Figure 1 As shown, the dimension of the insulation cavity 3 along the height direction is smaller than the dimension of the keel frame 2 along the height direction. The embodiment of the utility model reduces the elevation of the insulation cavity 3, and can reserve installation positions for horizontal building components (such as beams, floor slabs, etc.) that can be connected to the prefabricated exterior wall at the top in the future, so that such horizontal building components can be accommodated inside the wall panel assembly 1 of the prefabricated exterior wall after being fixedly connected to the prefabricated exterior wall, so as to achieve the effect of not being exposed to the outside and improve the indoor aesthetics.

[0050] Alternatively, if Figure 1As shown, the keel frame 2 includes: a top keel 21, a ground keel 22 and a vertical keel 23. Among them, the ground keel 22 is arranged on the bottom inner side of the wall panel assembly 1, opposite to the top keel 21, and a plurality of vertical keels 23 are vertically arranged between the top keel 21 and the ground keel 22, and the above three keels can be fixedly connected by welding to form an integrated structure. Specifically, the top keel 21, the ground keel 22 and the vertical keel 23 can all adopt C-shaped channel steel, the top keel 21 opening is set downward, the ground keel 22 opening is set upward, and the vertical keel 23 opening is set perpendicular to the wall panel assembly 1. The embodiment of the utility model can directly use the vertical keels 23 on both sides of the keel frame 2 as the boundary for dividing the reserved cavity 4, such as Figure 1 As shown, the two vertical keels marked as 23a can be used to divide the reserved cavities 4 on both sides, that is, the areas opposite to each other of the vertical keels 23 on both sides of the keel frame 2 in the horizontal direction are the reserved cavities 4, and there is no need to additionally set up an isolation device for separating different accommodating cavities.

[0051] Alternatively, if Figure 4 As shown, the keel frame 2 also includes: a limiting vertical keel 24. The specific structure of the limiting vertical keel 24 can be the same as that of the vertical keel 23, and can also be installed in the form of a C-shaped open vertical wall panel assembly 1. The difference between the two is that the limiting vertical keel 24 can be arranged in contact with the side wall of the structural column to limit the area of ​​the wall panel assembly 1 in the reserved cavity 4 that can fit with the side structural column. In other words, the limiting vertical keel 24 can divide the single-sided reserved cavity 4 into a partial area for subsequent fixed connection with the structural column and a remaining cavity area, wherein the wall panel assembly 1 corresponding to the partial area for subsequent fixed connection with the structural column can be covered and installed on the surface of the structural column so that the structural column is not exposed indoors. In addition, the limiting vertical keel 24 also has holes that correspond one-to-one to the grouting holes on the side wall of the structural column, such as Figure 5 As shown, in this way, the concrete subsequently poured in the structural column can flow into the reserved cavity 4 through the side wall grouting holes and the holes on the surface of the limiting vertical keel 24 in sequence.

[0052] Optionally, the prefabricated exterior wall may also include reserved window and / or door installation openings, so that prefabricated bay windows (such as Figure 2 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.

[0053] The utility model also provides a wall column connection node, such as Figure 7 As shown, the wall column connection node includes: any of the prefabricated exterior walls 100 described above, a structural column 200 with a side wall grouting hole 300, and a fixed connection member. It should be noted that, Figure 7Only a schematic diagram of the wall column connection node where the prefabricated exterior wall 100 is connected to a side structural column 200 is shown, and Figure 7 The fixed connector is not directly shown in the figure. It can be understood that the side surface of the structural column 200 clamped inside the prefabricated exterior wall 100 has a fixed connector and a through hole 300. In the embodiment of the utility model, the prefabricated exterior wall 100 can be fixedly connected to the structural column 200 by a fixed connector in advance in the factory, 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 structural column 200 is fixedly connected to the prefabricated exterior wall 100, there is a reserved cavity 4 between the two, which is used for the subsequent pouring of concrete at the construction site. The reserved cavity can accommodate the concrete poured into the structural column 200 and flowing in through the side wall grouting hole 300, such as C30 fine stone concrete. After the concrete solidifies, a strong connection node (i.e., the wall column connection node) is obtained. The wall column connection node first ensures the strength of both sides of the prefabricated exterior wall 100 (such as the strength of the wall itself), and then further ensures the connection strength between it and the structural column 200, so that when the load is transferred between the prefabricated exterior wall 100 and the structural column 200, the edge of the prefabricated exterior wall 100 will not crack, which will affect the stress performance of the wall. The wall column connection node can realize the firm assembly of the assembled wall panel and the building structural component.

[0054] Alternatively, if Figure 7 As shown, the wall column connection node also includes: when the structural column 200 is cast on site, concrete flows into the reserved cavity of the prefabricated exterior wall 100 through the side wall grouting hole 300, Figure 7 The short horizontal line fill pattern represents the concrete filled in the reserved cavity.

[0055] Optionally, the structural column 200 is provided with a plurality of side wall grouting holes 300 along the height direction of the side wall facing the inside of the prefabricated exterior wall 100. The embodiment of the utility model does not specifically limit the shape of the side wall grouting holes 300. For example, see Figure 8 As shown, the shape of the side wall grouting hole 300 can be an ellipse, or can be any other shape, as long as the size of the side wall grouting hole 300 can allow the cast-in-place concrete to pass through.

[0056] In the embodiment of the utility model, a rectangular column with a side wall grouting hole 300 can be used as the structural column 200, or, optionally, the structural column 200 is an L-shaped steel column (such as Figure 8 shown).

[0057] Optionally, the cross-sectional shape of the structural column 200 may be as follows: Fig. 9 The closed shape shown is a closed L-shaped cross section, or the cross-sectional shape of the structural column 200 can also be as follows Fig.10The open shape shown is an open L-shaped cross section. When the structural column 200 is an L-shaped steel column with a closed cross section, it can be formed by welding two bent steel plates, such as Fig.11 It should be noted that a lattice plate for strengthening the connection strength with other horizontal building components (such as beams) may be further provided inside the structural column 200. Fig.16 As shown, the lattice plate is indicated by the reference symbol G.

[0058] Alternatively, if Fig.12 As shown, the structural column 200 includes: a plug-in component 400 for connecting a plurality of prefabricated exterior walls 100 fixedly connected to the structural column 200 up and down. The plug-in component 400 may be a structure having a cross-sectional shape consistent with the cross-sectional shape of the structural column 200 and a slightly smaller cross-sectional area, such as Fig.12 As shown, the plug-in component 400 can be the same as the structural column 200, both of which are L-shaped steel columns. Alternatively, the plug-in component 400 can also be any structural component that can be accommodated in the structural column 200. Specifically, as Fig.12 As shown, the lower end of the plug-in connector 400 is fixedly connected to the inner side of the top of the structural column 200, such as by welding. The upper end of the plug-in connector 400 protrudes from the top of the structural column 200, so as to be inserted into the bottom of the structural column 200 fixedly connected to the upper adjacent prefabricated exterior wall, thereby forming a plug-in structure, so that two prefabricated exterior walls 100 fixedly connected with the structural columns 200 can be connected up and down based on the wall column connection node to form an integrated structure.

[0059] Alternatively, see Fig.13 As shown, the plug connector 400 includes a plug board 401 and a plug post 402. Fig.14 As shown, the plug board 401 is fixedly connected to the top of the structural column 200, and a hole for accommodating the plug post 402 is dug on the surface of the plug board 401. The embodiment of the utility model does not limit the number of the plug post 402, and the plug post 402 is at least one. Fig.13 As shown, the number of the plug posts 402 may be three. Fig.15 As shown, the lower end of the plug-in column 402 passes through the hole and is located on the inner side of the top of the structural column 200, and the upper end of the plug-in column 402 protrudes from the plug-in plate 401 so as to extend into the bottom of the structural column 200 connected to the upper adjacent prefabricated exterior wall 100 for connection.

[0060] In addition, the embodiment of the utility model only needs to ensure that the surface of the plug board 401 has holes that can accommodate all the plug posts 402. The number of holes is greater than the number of plug posts 402, which can also meet the reasonable use of the plug connector 400. Fig.15As shown, there are five holes on the surface of the plug board 401 for accommodating the plug posts 402, and three plug posts 402 are respectively located at the two ends and the inflection point of the plug board 401. This arrangement can facilitate the positioning of the prefabricated exterior wall 100 with the structural column 200 during the process of plugging up and down through the wall column connection node, avoiding the situation that the connection is not accurate and cannot be plugged smoothly.

[0061] Alternatively, if Fig.13 As shown, the side wall of the plug-in column 402 is provided with a plurality of flow holes along the height direction. In order to facilitate the pouring of concrete to the prefabricated exterior walls 100 installed with the structural columns 200 which have been plugged in upward and downward to form an integrated structure, the embodiment of the utility model is provided with flow holes for concrete circulation on the surface of the plug-in column 402. When pouring concrete at the construction site, the cast-in-place concrete can be filled into the structural column 200 through the plug-in column 402, and the bond strength between the wall column connection node and the concrete can be increased, thereby increasing the rigidity and strength of the structural column 200.

[0062] 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 exterior wall, characterized in that: include: A wall panel assembly (1) and a keel frame (2); the keel frame (2) is arranged inside the wall panel assembly (1) to divide the interior of the prefabricated exterior wall into two types of accommodating cavities; The accommodation cavities on both sides of the wall panel assembly (1) in the horizontal direction in the keel frame (2) are reserved cavities (4), and the accommodation cavity in the middle is a heat preservation cavity (3); The reserved cavity (4) is used to accommodate a structural column with a side wall grouting hole and concrete flowing in through the side wall grouting hole when the structural column is cast on site.

2. The prefabricated exterior wall according to claim 1, characterized in that: The dimension of the heat preservation cavity (3) along the height direction is smaller than the dimension of the keel frame (2) along the height direction.

3. The prefabricated exterior wall according to claim 1, characterized in that: The wall panel assembly (1) comprises two cement fiber boards.

4. The prefabricated exterior wall according to claim 1, characterized in that: Also includes: A connecting piece, through which the keel frame (2) is fixedly connected to the wall panel assembly (1).

5. The prefabricated exterior wall according to claim 1, characterized in that: The interior of the heat-insulating cavity (3) is filled with foamed concrete.

6. The prefabricated exterior wall according to claim 1, characterized in that: The keel frame (2) comprises: a top keel (21), a ground keel (22) and a vertical keel (23); the areas opposite to the vertical keels (23) located on both sides of the keel frame (2) in the horizontal direction are the reserved cavities (4).

7. The prefabricated exterior wall according to claim 6, characterized in that: The keel frame (2) further comprises: a limiting vertical keel (24), the limiting vertical keel (24) being arranged close to the side wall of the structural column, and the limiting vertical keel (24) having holes corresponding one to one with the grouting holes of the side wall of the structural column.

8. The prefabricated exterior wall according to claim 1, characterized in that: Also includes: Openings reserved for window and / or door installation.

9. A wall column connection node, characterized in that: include: A prefabricated exterior wall (100), a structural column (200) having a side wall grouting hole (300), and a fixed connection piece as described in any one of claims 1 to 8; the prefabricated exterior wall (100) is fixedly connected to the structural column (200) via the fixed connection piece; and a reserved cavity is provided between the structural column (200) and the prefabricated exterior wall (100).

10. The wall column connection node according to claim 9, characterized in that: Also includes: When the structural column (200) is cast on site, concrete flows into the reserved cavity of the prefabricated exterior wall (100) through the side wall grouting hole (300).

11. The wall column connection node according to claim 9, characterized in that: The structural column (200) is provided with a plurality of side wall grouting holes (300) along the height direction on the side wall facing the interior of the prefabricated exterior wall (100).

12. The wall column connection node according to claim 9, characterized in that: The structural column (200) is an L-shaped steel column.

13. The wall column connection node according to claim 12, characterized in that: The cross-sectional shape of the structural column (200) is a closed shape or an open shape.

14. The wall column connection node according to claim 9, characterized in that: The structural column (200) comprises: a plug-in component (400), the lower end of which is fixedly connected to the inner side of the top of the structural column (200); the upper end of the plug-in component (400) protrudes from the top of the structural column (200) so as to be inserted into the bottom of the structural column (200) connected to the upper adjacent prefabricated exterior wall (100), thereby forming a plug-in connection.

15. The wall column connection node according to claim 14, characterized in that: The plug connector (400) comprises a plug board (401) and a plug post (402); The plug board (401) is fixedly connected to the top of the structural column (200); a hole for accommodating the plug post (402) is dug on the surface of the plug board (401); the lower end of the plug post (402) passes through the hole and is located on the inner side of the top of the structural column (200); the upper end of the plug post (402) protrudes from the plug board (401).

16. The wall column connection node according to claim 15, characterized in that: The side wall of the plug-in column (402) is provided with a plurality of flow holes along the height direction.

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