Prefabricated sandwich thermal insulation wall and construction column connecting joint structure and construction method thereof

Abstract

The application discloses a prefabricated sandwich thermal insulation wall and a connecting node structure of a constructional column, the prefabricated sandwich thermal insulation wall is provided with an outer leaf plate, a first thermal insulation layer and an inner leaf plate; the connecting node structure is characterized in that a connecting table is arranged on the constructional column and protrudes to the side of the prefabricated sandwich thermal insulation wall and is arranged in the same width as the outer leaf plate, the connecting table is integrally poured and formed with the constructional column, a concrete connecting layer is poured between the connecting table and the outer leaf plate, a thermal insulation inner wall plate is attached to the inner side of the connecting table, one end of the thermal insulation inner wall plate is connected to the constructional column, and the other end of the thermal insulation inner wall plate is connected to the first thermal insulation layer and the inner leaf plate; and a construction method of connecting the prefabricated sandwich thermal insulation wall and the constructional column is also disclosed.

Description

Technical Field

[0001] The present invention belongs to the technical field of building construction, and in particular relates to a connection node structure of a prefabricated sandwich insulation wall and a structural column and a construction method thereof. Background Art

[0002] In recent years, with the rapid advancement of national energy conservation and emission reduction efforts and the rapid development of building energy conservation, passive super-low energy buildings have become increasingly common. Passive super-low energy buildings have high thermal insulation and heat efficiency requirements for their exterior walls. For prefabricated passive super-low energy buildings, their exterior walls are generally made of prefabricated sandwich insulation walls. During the construction of prefabricated prefabricated sandwich insulation walls, the prefabricated sandwich insulation walls need to be assembled and connected to the building's structural columns. The connection between the prefabricated sandwich insulation wall and the structural column surface is very important. Proper handling can effectively prevent heat loss and temperature fluctuations, and maintain indoor temperature stability. At present, the prefabricated sandwich insulation wall and the structural column are mainly connected by a notch connection method, that is, a notch is set on the column surface of the structural column, and then the prefabricated sandwich insulation wall is docked into the notch. The joint is sealed with grouting materials or other methods. Although this method is convenient to construct, there is a problem that the grouting material cannot be filled densely. In addition, over time, water from the exterior wall is prone to seepage at the joints between walls and columns, which causes the grouting material to gradually become sandy and loose, affecting the thermal insulation effect at the joints and aggravating the thermal bridge phenomenon at the wall-column nodes. As a result, it cannot meet the requirements of passive super-low energy buildings for exterior wall thermal insulation energy efficiency; at the same time, it will also cause certain structural safety risks.

[0003] Therefore, it is necessary to provide a new prefabricated sandwich insulation wall and structural column connection node structure and its construction method, so that by adopting this connection node structure and construction method, the thermal insulation performance of the building can be improved, and the safety of building use can be improved. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a prefabricated sandwich insulation wall and structural column connection node structure and its construction method. By adopting this connection node structure and construction method, it is beneficial to improve the thermal insulation performance of the building and to improve the safety of the building.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a prefabricated sandwich insulation wall and structural column connection node structure, the prefabricated sandwich insulation wall comprises an outer page panel, a first insulation layer and an inner page panel; the structural column is provided with a connecting platform protruding toward the side of the prefabricated sandwich insulation wall and arranged with the same width as the outer page panel, the connecting platform and the structural column are cast as one piece; a concrete connecting layer is cast between the connecting platform and the outer page panel, a waterstop steel plate is embedded in the concrete connecting layer; an insulation inner wall panel is attached to the inner side surface of the connecting platform, one end of the insulation inner wall panel is connected to the structural column, and the other end of the insulation inner wall panel is connected to the first insulation layer and the inner page panel.

[0006] Furthermore, the thermal insulation inner wall panel includes a second thermal insulation layer and an inner wall panel fixed together, the second thermal insulation layer is of equal thickness to the first thermal insulation layer and is flush with each other, and the inner wall panel is of equal thickness to the inner page panel and is flush with each other.

[0007] Furthermore, the outer page plate extends toward the structural column side beyond the first insulation layer and the inner page plate.

[0008] Furthermore, a polyurethane insulation board is squeezed between the butt ends of the second insulation layer and the first insulation layer, and both ends of the polyurethane insulation board are pressed by the inner wall board and the inner page board respectively.

[0009] Furthermore, the butt ends of the inner wall panel and the inner page panel are provided with an anti-ridge protrusion, the inner page panel is provided with a groove matching the anti-ridge protrusion, and the joint between the inner wall panel and the inner page panel is filled with grouting material.

[0010] Furthermore, a weather-resistant adhesive layer is provided at the edge of the joint between the inner wall panel and the inner page panel close to the inner side of the wall.

[0011] Furthermore, the length of the concrete connecting layer along the length direction of the wall ranges from 8 to 15 cm.

[0012] Furthermore, the structural column is pre-set with an installation groove for embedding the thermal insulation inner wall panel, the corresponding end of the thermal insulation inner wall panel is embedded in the installation groove, and adhesive is applied to the fitting part between the thermal insulation inner wall panel and the installation groove.

[0013] Furthermore, the first thermal insulation layer and the second thermal insulation layer are made of the same thermal insulation material.

[0014] A construction method for connecting a prefabricated sandwich insulation wall and a structural column is also provided, which adopts the above-mentioned prefabricated sandwich insulation wall and structural column connection node structure, comprising the following steps:

[0015] S1: When casting the structural column, the connecting platform is cast together with the formwork;

[0016] S2: Fix the prefabricated sandwich insulation wall to a position at a set distance from the connection platform;

[0017] S3: pouring concrete connection layer, in which steel formwork is used to complete the formwork;

[0018] S4: Assemble thermal insulation interior wall panels.

[0019] The beneficial effects of the present invention are as follows:

[0020] The prefabricated sandwich insulation wall and structural column connection node structure provided by the present invention can improve the thermal insulation performance of the building and improve the safety of building use by adopting the connection node structure; specifically, since the structural column is pre-set with a connection platform that is a cast structure integral with the structural column, the outer page plate and the connection platform are connected by a concrete connection layer, and the concrete connection layer can ensure the stability and reliability of the connection between the outer page plate and the structural column; at the same time, the concrete connection layer is conducive to ensuring the density of the filling construction, and the water-stop steel plate is provided, thereby effectively ensuring the waterproofness of the joint part of the outer side of the wall, effectively This prevents moisture from seeping through the exterior of the wall and prevents sanding and loosening of the grouting material at the joints, thereby improving safety. Furthermore, this prevents the thermal insulation of the joints from being affected by sanding and loosening of the grouting material, thereby improving the building's thermal insulation performance. The equal width of the connecting platform and the outer panels, along with the insulating inner wall panels installed on the inner side of the connecting platform, ensures uniform insulation at the joints and avoids strong thermal bridges at the wall-stud joints. These wall-stud joints offer excellent thermal insulation and minimize the risk of water seepage from the exterior of the wall, helping to meet the requirements for thermal insulation efficiency of exterior walls in passive ultra-low energy buildings.

[0021] The construction method for connecting the prefabricated sandwich insulation wall and the structural column provided by the present invention can help improve the thermal insulation performance of the building and can help improve the safety of building use; at the same time, the construction efficiency is high and the construction quality is good.

[0022] Other advantages, objects, and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art upon examination of the following description or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of a cross-sectional structure of an embodiment of the present invention

[0024] Figure 2 for Figure 1 A partial enlarged schematic diagram of point A in the middle

[0025] Figure 3 Schematic diagram of the construction of the concrete connecting layer according to one embodiment of the present invention

[0026] Figure numerals: 1-prefabricated sandwich insulation wall; 101-outer page panel; 102-first insulation layer; 103-inner page panel; 103a-groove; 2-structural column; 201-connecting platform; 202-installation groove; 3-concrete connecting layer; 4-insulated inner wall panel; 401-second insulation layer; 402-inner wall panel; 402a-anti-ridge protrusion; 5-polyurethane insulation board; 6-grouting material; 7-weather-resistant adhesive layer; 8-waterstop steel plate; 9-adhesive; 10-steel formwork. DETAILED DESCRIPTION

[0027] 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 only part of the embodiments of the present invention, rather than all the embodiments.

[0028] See also Figure 1-3 , this embodiment discloses a prefabricated sandwich insulation wall and structural column connection node structure, the prefabricated sandwich insulation wall 1 includes an outer page board 101, a first insulation layer 102 and an inner page board 103, wherein the outer page board 101 and the inner page board 103 are generally concrete boards, and the first insulation layer 102 is generally made of polystyrene board or extruded board, etc., which is the existing prefabricated sandwich insulation wall 1 structure and is not described in detail here; the structural column 2 is provided with a connecting platform 201 that protrudes to the side of the prefabricated sandwich insulation wall 1 and is set with the same width as the outer page board 101, the connecting platform 201 is cast integrally with the structural column 2, and the structural column 2 is generally a reinforced concrete structure, which plays a role in enhancing the integrity and stability of the building. It can be understood that the height of the connecting platform 201 is the same as that of the outer page board 101. The prefabricated sandwich insulation wall 1 has the same height; a concrete connecting layer 3 is poured between the connecting platform 201 and the outer page plate 101, and a waterstop steel plate 8 is pre-embedded in the concrete connecting layer 3. Specifically, the waterstop steel plate 8 is arranged in the middle of the width direction of the concrete connecting layer 3; it can be understood that the connecting platform 201 is flush with the outer page plate 101 during construction; an insulation inner wall panel 4 is affixed to the inner side of the connecting platform 201, one end of the insulation inner wall panel 4 is butted to the structural column 2, and the other end of the insulation inner wall panel 4 is butted to the first insulation layer 102 and the inner page plate 103; it should be noted that, hereinafter, unless otherwise specified, the side close to the outer page plate 101 is the outer side, and the side close to the inner page plate 103 is the inner side;

[0029] By adopting the above-mentioned connection node structure, it is beneficial to improve the thermal insulation performance of the building and to improve the safety of the building. Specifically, since the structural column 2 is provided with a connection platform 201 which is a cast structure integral with the structural column, the outer page plate 101 is connected to the connection platform 201 through the concrete connection layer 3, and the concrete connection layer 3 can ensure the connection stability and reliability between the outer page plate 101 and the structural column 2. At the same time, the concrete connection layer 3 is conducive to ensuring the density of the filling construction, and the water-stop steel plate 8 is provided, thereby effectively ensuring the waterproofness of the joint part of the outer side of the wall, and effectively avoiding water on the outside of the wall. There is no leakage, and the grouting material at the joints will not become sandy or loose, which is beneficial to improving safety in use. At the same time, the thermal insulation effect at the joints will not be affected by the sanding and loosening of the grouting material, which is beneficial to improving the thermal insulation performance of the building. The equal width setting of the connecting platform 201 and the outer page plate 101 and the thermal insulation inner wall plate 4 set on the inner side of the connecting platform 201 are beneficial to ensuring the uniformity of thermal insulation at the node and avoiding the occurrence of strong thermal bridges at the wall column connection nodes. The wall column connection node has a good thermal insulation effect and is less likely to be affected by water seepage from the outside of the wall, which is beneficial to meeting the requirements of passive super-low energy consumption buildings for thermal insulation energy efficiency of the exterior wall.

[0030] In this embodiment, the thermal insulation inner wall panel 4 includes a second thermal insulation layer 401 and an inner wall panel 402 fixed together, the second thermal insulation layer 401 is of the same thickness as the first thermal insulation layer 102 and is flush with each other, and the inner wall panel 402 is of the same thickness as the inner page panel 103 and is flush with each other; specifically, the second thermal insulation layer 401 and the first thermal insulation layer 102 are both made of polystyrene boards, the inner wall panel 402 is a precast concrete panel, and the second thermal insulation layer 401 and the inner wall panel 402 are fixed together with glass fiber connectors to form an integral structure; the thermal insulation inner wall panel 4 in this structural design can be assembled as a whole to ensure construction efficiency; at the same time, the second thermal insulation layer 401 is of the same thickness as the first thermal insulation layer 102 and is flush with each other, and the inner wall panel 402 is of the same thickness as the inner page panel 103 and is flush with each other, which is conducive to further improving the overall thermal insulation uniformity of the wall surface, reducing the occurrence of thermal bridges, ensuring the uniformity of indoor temperature, reducing heat loss, and reducing energy consumption.

[0031] In this embodiment, the outer plate 101 extends beyond the first insulation layer 102 and the inner plate 103 toward the structural column 2. That is, the first insulation layer 102 and the inner plate 103 are both slightly shorter than the outer plate 101. In this way, the inner side surface of the outer plate 101 that exceeds the outer plate 101 can be used as the formwork surface when pouring the concrete connecting layer 3. Figure 3Steel formwork 10 is provided on both sides of the protruding part of the outer page plate 101 to form a pouring space for the concrete connecting layer 3, which is conducive to the erection and fixation of the pouring formwork; at the same time, the joint position of the first insulation layer 102, the inner page plate 103 and the insulation inner wall panel 4 can be staggered with the position of the concrete connecting layer 3, thereby improving the structural stability and construction convenience.

[0032] In this embodiment, a polyurethane insulation board 5 is squeezed between the butt ends of the second insulation layer 401 and the first insulation layer 102, and the two ends of the polyurethane insulation board 5 are respectively pressed by the inner wall panel 402 and the inner page panel 103. In this structural design, by arranging the polyurethane insulation board 5, the polyurethane insulation board 5 can integrate the insulation and waterproof functions into one, reduce the risk of leakage at the inner seam of the wall, and improve the insulation durability at the inner seam of the wall.

[0033] In this embodiment, the butt end of the inner wall panel 402 and the inner page panel 103 is provided with a counter-step protrusion 402a, and the inner page panel 103 is provided with a groove 103a that cooperates with the counter-step protrusion 402a, and the joint between the inner wall panel 402 and the inner page panel 103 is filled with grouting material 6; by providing the counter-step protrusion 402a and the groove 103a, the joint area can be increased to form a joint with a broken line structure, and the sealing and connection of the joint are completed by the grouting material 6; the overall structure is convenient to construct and easy to install, and can also improve the waterproof effect of the inner side and enhance the durability of the structure.

[0034] In this embodiment, a weather-resistant adhesive layer 7 is provided at the edge of the joint between the inner wall panel 402 and the inner page panel 103 close to the inner side of the wall. The weather-resistant adhesive layer 7 has good weather aging resistance, excellent high and low temperature resistance, and excellent adhesion. By providing the weather-resistant adhesive layer 7, the durability of the overall structure can be further enhanced.

[0035] In this embodiment, the length of the concrete connecting layer 3 along the length direction of the wall is in the range of 5-10 cm. Within this range, the concrete connecting layer 3 is easy to construct and has good connection strength.

[0036] In this embodiment, the structural column 2 is pre-set with an installation groove 202 for embedding the thermal insulation inner wall panel 4, the corresponding end of the thermal insulation inner wall panel 4 is embedded in the installation groove 202, and the adhesive 9 is applied to the fitting part between the thermal insulation inner wall panel 4 and the installation groove 202; by embedding the thermal insulation inner wall panel 4 into the column body of the structural column 2, the thermal insulation performance of the overall structure can be further enhanced, and at the same time, it is beneficial to ensure the installation stability of the thermal insulation inner wall panel 4; the set adhesive 9 can also improve the waterproofness of the indoor side.

[0037] In this embodiment, the first insulation layer 102 and the second insulation layer 401 are made of the same insulation material; specifically, they are both made of polystyrene boards; by using insulation layers made of the same material, thermal insulation uniformity can be ensured, which is conducive to further reducing the thermal bridge phenomenon at the node position and further improving the thermal insulation performance.

[0038] This embodiment also discloses a construction method for connecting a prefabricated sandwich insulation wall with a structural column, which uses the above-described prefabricated sandwich insulation wall and structural column connection node structure, including the following steps:

[0039] S1: When casting the structural column, formwork is supported and cast to form the connection platform 201;

[0040] S2: Fix the prefabricated sandwich insulation wall 1 to a position at a set distance from the connecting platform 201;

[0041] S3: pouring concrete connection layer 3, wherein steel formwork 10 is used to complete the formwork;

[0042] S4: Assemble the thermal insulation inner wall panel 4;

[0043] The above construction method can help improve the thermal insulation performance of the building and can help improve the safety of building use; at the same time, the construction efficiency is high and the construction quality is good; among them, by using steel formwork 10 to complete the formwork, it is possible to avoid the occurrence of misalignment due to form expansion, and ensure that the connecting platform 201 and the inner side surface of the outer page plate 101 can be flush, thereby ensuring the subsequent alignment of the insulated inner wall panel 4 with the inner page plate 103 and the first insulation layer 102, thereby ensuring the alignment of the two insulation layers, facilitating construction and ensuring the uniformity of wall insulation, reducing the risk of thermal bridges; it is also beneficial to reduce the risk of leakage.

[0044] Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A prefabricated sandwich insulation wall and structural column connection node structure, characterized by: The prefabricated sandwich insulation wall (1) comprises an outer panel (101), a first insulation layer (102) and an inner panel (103); The structural column (2) is provided with a connecting platform (201) protruding toward the side of the prefabricated sandwich insulation wall (1) and having the same width as the outer page plate (101), and the connecting platform (201) and the structural column (2) are integrally cast and formed; A concrete connection layer (3) is cast between the connection platform (201) and the outer leaf plate (101), and a water-stop steel plate (8) is pre-embedded in the concrete connection layer (3); The inner side surface of the connecting platform (201) is provided with a heat-insulating inner wall panel (4), one end of the heat-insulating inner wall panel (4) is connected to the structural column (2), and the other end of the heat-insulating inner wall panel (4) is connected to the first heat-insulating layer (102) and the inner page panel (103); The thermal insulation inner wall panel (4) comprises a second thermal insulation layer (401) and an inner wall panel (402) fixedly formed as one body, the second thermal insulation layer (401) and the first thermal insulation layer (102) having the same thickness and being flush with each other, and the inner wall panel (402) and the inner page panel (103) having the same thickness and being flush with each other; The outer page plate (101) extends toward the structural column (2) side and is arranged beyond the first thermal insulation layer (102) and the inner page plate (103).

2. The prefabricated sandwich insulation wall and structural column connection node structure according to claim 1 is characterized by: A polyurethane insulation board (5) is extruded between the butt ends of the second insulation layer (401) and the first insulation layer (102), and both ends of the polyurethane insulation board (5) are pressed tightly by the inner wall board (402) and the inner page board (103), respectively.

3. The prefabricated sandwich insulation wall and structural column connection node structure according to claim 2, characterized in that: The butt joint ends of the inner wall panel (402) and the inner page panel (103) are provided with an anti-step protrusion (402a), the inner page panel (103) is provided with a groove (103a) that matches the anti-step protrusion (402a), and the joint between the inner wall panel (402) and the inner page panel (103) is filled with grouting material (6).

4. The prefabricated sandwich insulation wall and structural column connection node structure according to claim 3, characterized in that: A weather-resistant adhesive layer (7) is provided at the edge of the joint between the inner wall panel (402) and the inner leaf panel (103) close to the inner side surface of the wall.

5. The connection node structure of the prefabricated sandwich insulation wall and the structural column according to claim 1 is characterized by: The length of the concrete connecting layer (3) along the length direction of the wall is in the range of 5-10 cm.

6. The prefabricated sandwich insulation wall and structural column connection node structure according to claim 1, characterized in that: The structural column (2) is pre-set with an installation groove (202) for embedding the thermal insulation inner wall panel (4), the corresponding end of the thermal insulation inner wall panel (4) is embedded in the installation groove (202), and an adhesive (9) is applied to the joining portion between the thermal insulation inner wall panel (4) and the installation groove (202).

7. The prefabricated sandwich insulation wall and structural column connection node structure according to claim 1, characterized in that: The first thermal insulation layer (102) and the second thermal insulation layer (401) are made of the same thermal insulation material.

8. A construction method for connecting a prefabricated sandwich insulation wall and a structural column, using the prefabricated sandwich insulation wall and structural column connection node structure according to any one of claims 1 to 7, characterized in that: The steps include: S1: When casting the structural column, the connecting platform (201) is cast together with the formwork; S2: Fixing the prefabricated sandwich insulation wall (1) to a position at a set distance from the connecting platform (201); S3: pouring the concrete connection layer (3), wherein the steel formwork (10) is used to complete the formwork; S4: Assemble the thermal insulation inner wall panels (4).

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