A single-face composite external thermal insulation shear wall for modular buildings

Abstract

The utility model relates to prefabricated building technical field especially relates to a single face superimposed external thermal insulation shear wall for modular building. Single face superimposed external thermal insulation shear wall includes adjacent interval setting superimposed thermal insulation outer layer and inner leaf layer and is used for connecting a plurality of draw together spare of both, and forms the pouring cavity between superimposed thermal insulation outer layer and inner leaf layer. Superimposed thermal insulation outer layer includes the thermal insulation layer, waterproof layer and outer leaf layer fixedly connected in proper order from outside to inside. One end of every draw together spare is fixedly connected with outer leaf layer, and the other end stretches into pouring cavity and is fixedly connected with one end of reinforcing steel bar framework arranged in pouring cavity, and the other end of reinforcing steel bar framework is anchored in inner leaf layer. The thermal insulation layer is prefabricated with outer leaf layer in factory, makes superimposed thermal insulation outer layer have thermal insulation base simultaneously, and directly acts as the outer formwork of cast-in-situ concrete after transporting to the scene, thereby realizes exempting from to support the mode construction, reduces the on -the -spot procedure, improves assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building technology, and in particular to a single-sided composite external thermal insulation shear wall for modular buildings. Background Technology

[0002] With the continuous advancement of new building industrialization and green building concepts, Modular Integrated Construction (MiC), as the core technology system of the prefabricated building 4.0 era, is gradually becoming an important direction for modern building development. MiC technology completes the hexahedral or pentahedral modular prefabrication of building units in a factory, integrating structural, equipment, pipeline, insulation, and decorative systems to achieve a highly efficient construction mode of "building houses like assembling building blocks." This technology has significant advantages such as short construction cycle, high construction efficiency, less on-site wet work, less environmental pollution, and strong quality control, making it particularly suitable for high-standard building types such as high-rise residential buildings, hotels, and apartments.

[0003] In the MiC system, the shear wall structure, as the main vertical load-bearing and lateral force-resisting component, directly affects the overall construction efficiency and quality due to its level of industrialization and integration. However, the integration level of components in the current MiC shear wall system is still relatively low, and problems such as large amounts of on-site rebar binding, complex formwork erection, and numerous construction procedures for the enclosure structure are common. In particular, the construction of the external insulation system still largely relies on on-site wet work to construct the insulation layer and the decorative layer layer by layer, making it difficult to achieve integrated prefabrication in the factory. This results in extended construction cycles, poor quality stability, and increased risks associated with working at heights.

[0004] To improve building energy efficiency, vacuum insulation panels, due to their ultra-low thermal conductivity and excellent insulation performance, have been widely used in high-end energy-saving building exterior wall systems in recent years. Existing technologies, such as Chinese utility model patent CN202121251564.4, disclose a system for casting concrete using vacuum insulation panels. This system clamps the vacuum insulation panels between wire mesh sheets and secures them with through-hole round steel bars and fixing caps, achieving integrated molding of the vacuum insulation panels and structure during the cast-in-place concrete process. This results in better insulation performance and durability while reducing construction steps. However, this solution is mainly suitable for traditional cast-in-place concrete structural systems, and its construction method still relies heavily on on-site wet work. Furthermore, it is incompatible with the factory prefabrication and dry assembly processes of MiC modular buildings, leading to low production efficiency and difficulty in integrating into the standardized assembly line production system of modular buildings. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, this utility model provides a single-sided composite external insulation shear wall for modular buildings, which solves the technical problem that traditional shear wall external insulation systems are difficult to achieve high integration and factory prefabrication in modular buildings.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] This utility model provides a single-sided composite external thermal insulation shear wall for modular buildings, including an adjacent composite thermal insulation outer layer and an inner leaf layer, and multiple tie members for connecting the two, forming a casting cavity between the composite thermal insulation outer layer and the inner leaf layer; the composite thermal insulation outer layer includes an insulation layer, a waterproof layer and an outer leaf layer fixedly connected in sequence from the outside to the inside; one end of each tie member is fixedly connected to the outer leaf layer, and the other end extends into the casting cavity and is fixedly connected to one end of a steel reinforcement skeleton provided in the casting cavity, and the other end of the steel reinforcement skeleton is anchored in the inner leaf layer.

[0010] Preferably, the insulation layer is composed of multiple vacuum insulation panels arranged horizontally and vertically, with gaps between adjacent vacuum insulation panels; the gaps between the vacuum insulation panels are filled with insulating mortar.

[0011] Preferably, each vacuum insulation panel is fixedly connected to the outside of the waterproof layer by adhesive mortar.

[0012] Preferably, it also includes multiple thermal insulation anchors; one end of the thermal insulation anchor is anchored to the outside of the vacuum insulation board, and the other end passes through the thermal insulation mortar, bonding mortar and waterproof layer in sequence to be fixedly connected to the outer leaf layer.

[0013] Preferably, the gap width between two adjacent vacuum insulation panels is less than 5 mm.

[0014] Preferably, the tie member includes a tie bolt and a tie nut that is threadedly connected to the tie bolt; one end of the tie bolt is fixedly connected to the outer leaf layer, and the other end extends into the casting cavity, with an external thread at the extended end, and the tie nut is screwed onto the external thread of the tie bolt; one end of the reinforcing bar skeleton is anchored to the tie nut.

[0015] Preferably, the outer blade layer includes an outer blade plate and a plurality of transversely arranged reinforcing steel plates fixedly connected to its inner side; both the outer blade plate and the reinforcing steel plates are provided with through holes for the tie members to pass through, and the plurality of reinforcing steel plates are arranged at intervals along the longitudinal direction of the outer blade plate.

[0016] Preferably, the composite insulation outer layer further includes a crack-resistant layer; the crack-resistant layer is disposed on the outer surface of the insulation layer.

[0017] Preferably, the composite insulation outer layer also includes an exterior finish; the exterior finish is disposed on the outer side of the crack-resistant layer.

[0018] Preferably, the casting cavity is provided with multiple longitudinal steel bars and multiple annular stirrups; the multiple longitudinal steel bars are respectively set at both ends of the casting cavity; the multiple annular stirrups are arranged at intervals along the length direction of the longitudinal steel bars, and are sleeved on the outside of the longitudinal steel bars and fixedly connected to the longitudinal steel bars.

[0019] (III) Beneficial Effects

[0020] The beneficial effects of this utility model are:

[0021] This utility model discloses a single-sided composite external insulation shear wall for modular buildings. The single-sided composite external insulation shear wall includes an adjacent, spaced-apart composite insulation outer layer and an inner leaf layer, as well as a tie assembly for connecting the two. A casting cavity is formed between the composite insulation outer layer and the inner leaf layer. The composite insulation outer layer includes an insulation layer, a waterproof layer, and an outer leaf layer, which are sequentially fixedly connected from the outside in. The insulation layer and the outer leaf layer are prefabricated in the factory, so that the composite insulation outer layer simultaneously serves as an insulation base and can directly function as the outer formwork for cast-in-place concrete after transportation to the site. This achieves formwork-free construction, reduces on-site procedures, and improves assembly efficiency. While ensuring the structural load-bearing capacity of the shear wall, it achieves a three-in-one integration of structure, insulation, waterproofing, and formwork, eliminating the need for on-site formwork erection and dismantling, and significantly improving assembly rate and construction efficiency. Meanwhile, the thickness of the composite insulation outer layer can be flexibly adjusted according to the energy-saving standards and insulation requirements of different climate zones, and it can be used in combination with traditional insulation materials (such as polystyrene board, rock wool board, etc.) to take into account insulation performance, economy and construction adaptability. Attached Figure Description

[0022] Figure 1 This is an exploded view of a single-sided composite external thermal insulation shear wall for modular buildings according to the present invention.

[0023] Figure 2 This is a schematic cross-sectional view of a single-sided composite external thermal insulation shear wall for modular buildings according to the present invention.

[0024] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 This is a longitudinal sectional view of a single-sided composite external thermal insulation shear wall for modular buildings according to the present invention.

[0026] Figure 5 This is a schematic diagram of the outer leaf layer.

[0027] [Explanation of Labels in the Attached Image]

[0028] 1: Composite outer insulation layer; 11: Exterior finish; 12: Crack-resistant layer; 13: Insulation layer; 131: Vacuum insulation board; 132: Insulation mortar; 14: Bonding mortar; 15: Waterproof layer; 16: Outer leaf layer; 161: Outer leaf plate; 162: Reinforcing steel plate;

[0029] 2: Inner leaf layer;

[0030] 3: Casting cavity;

[0031] 4: Tie-in component; 41: Tie-in bolt; 42: Tie-in nut; 5: Thermal anchor bolt;

[0032] 6: Longitudinal reinforcement;

[0033] 7: Circular stirrups;

[0034] 8: Reinforcing steel frame. Detailed Implementation

[0035] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0037] Example

[0038] like Figure 1 and Figure 4As shown, this embodiment provides a single-sided composite external insulation shear wall for modular buildings. The single-sided composite external insulation shear wall for modular buildings includes an adjacent, spaced-apart composite insulation outer layer 1 and inner leaf layer 2, and multiple tie members 4 for connecting the two. A casting cavity 3 is formed between the composite insulation outer layer 1 and the inner leaf layer 2. The composite insulation outer layer 1 includes an insulation layer 13, a waterproof layer 15, and an outer leaf layer 16, which are sequentially fixedly connected from the outside to the inside. One end of each tie member 4 is fixedly connected to the outer leaf layer 16, and the other end extends into the casting cavity 3 and is fixedly connected to one end of a steel reinforcement skeleton 8 disposed in the casting cavity 3. The other end of the steel reinforcement skeleton 8 is anchored within the inner leaf layer 2. The insulation layer 13 and the outer leaf layer 16 are prefabricated in the factory, so that the composite insulation outer layer 1 simultaneously has an insulation base and can directly serve as the outer formwork for cast-in-place concrete after transportation to the site, thereby achieving formwork-free construction, reducing on-site procedures, and improving assembly efficiency. While ensuring the structural integrity of the shear wall, this design integrates structural integrity, thermal insulation, waterproofing, and formwork into a single unit, eliminating the need for on-site formwork erection and dismantling, and significantly improving assembly rate and construction efficiency. Furthermore, the thickness of the composite insulation outer layer 1 can be flexibly adjusted according to the energy-saving standards and insulation requirements of different climate zones, and it can be used in combination with traditional insulation materials such as polystyrene boards and rock wool boards to balance insulation performance, economy, and construction adaptability.

[0039] like Figure 1 and Figure 3 As shown, the insulation layer 13 is composed of multiple horizontally and vertically arranged vacuum insulation panels 131, with gaps between adjacent vacuum insulation panels 131. The gaps between the vacuum insulation panels 131 are filled with insulating mortar 132.

[0040] It should be noted that in other embodiments, the vacuum insulation panel 131 can also be replaced with other conventional insulation materials, such as rock wool board, glass wool board or foam concrete board, to suit different cost and performance requirements.

[0041] Preferably, the gap width between two adjacent vacuum insulation panels 131 is less than 5mm to minimize the thermal bridging effect and ensure the continuity of the overall thermal insulation performance of the wall.

[0042] Preferably, the thermal insulation mortar 132 is a granulated polystyrene thermal insulation mortar, and the outer surface of the vacuum insulation board 131 is also covered with thermal insulation mortar 132, and the thickness of the thermal insulation mortar 132 is 5mm, which can enhance the protection of the vacuum insulation board 131.

[0043] Preferably, such as Figure 1 As shown, each vacuum insulation panel 131 is fixedly connected to the outside of the waterproof layer 15 by adhesive mortar 14.

[0044] Preferably, such as Figure 2 and Figure 3As shown, it also includes multiple thermal insulation anchors 5. One end of the thermal insulation anchor 5 is anchored to the outside of the vacuum insulation board 131, and the other end passes through the thermal insulation mortar 132, the adhesive mortar 14, and the waterproof layer 15 in sequence to be fixedly connected to the outer leaf layer 16. The thermal insulation anchors 5 further enhance the reliability of the connection between the thermal insulation system and the main structure, and improve the overall safety. By adding thermal insulation anchors 5, the internal thermal insulation system, such as the vacuum insulation board 131, is mechanically anchored to the outer leaf layer 16. One end of the thermal insulation anchor 5 is anchored to the outside of the vacuum insulation board 131, and the other end penetrates each functional layer and is firmly connected to the outer leaf layer 16, forming a double-safety fixing mechanism of adhesive bonding and mechanical anchoring. This design significantly improves the connection strength and reliability between the external thermal insulation system and the main structure, effectively prevents the insulation layer 13 from falling off, and further enhances the overall safety and durability of the wall.

[0045] Preferably, the waterproof layer 15 is made of waterproof mortar.

[0046] To enhance the overall strength of the outer leaf layer 16, such as Figure 5 As shown, the outer leaf layer 16 includes an outer leaf plate 161 and a plurality of horizontally arranged reinforcing steel plates 162 fixedly connected to its inner side. Both the outer leaf plate 161 and the reinforcing steel plates 162 have through holes for the tie rods 4 to pass through. The plurality of reinforcing steel plates 162 are arranged at intervals along the longitudinal direction of the outer leaf plate 161. The reinforcing steel plates 162 prevent the outer leaf plate 161 from deforming or cracking, ensuring the accuracy of the wall dimensions and the flatness of the appearance.

[0047] like Figure 3 As shown, the tie member 4 includes a tie bolt 41 and a tie nut 42 threadedly connected to the tie bolt 41. One end of the tie bolt 41 is fixedly connected to the outer leaf plate 161 of the outer leaf layer 16, and the other end extends into the pouring cavity 3. The extended end is provided with external threads, and the tie nut 42 is screwed onto the external threads of the tie bolt 41. One end of the reinforcing steel skeleton 8 is anchored to the tie nut 42. Traditional single-sided composite shear walls require on-site erection of external formwork, making it difficult to integrate the insulation and decorative structures in advance in the factory, resulting in a large amount of on-site work. The tie member 4 in this solution provides precise formwork positioning and control functions, realizing formwork-free construction. Before concrete pouring, by tightening the tie nut 42, the distance between the composite insulation outer layer 1 and the internal reinforcing steel skeleton 8 can be precisely controlled, that is, the thickness of the pouring cavity 3 can be precisely controlled. This allows the prefabricated composite insulation outer layer 1 to act as a high-quality, non-removable outer formwork, eliminating the cumbersome process of setting up and dismantling the outer formwork in traditional construction. It integrates the wall insulation and formwork functions into the factory production stage in advance, significantly improving the factory completion rate and overall assembly rate, reducing the construction cycle and labor input, greatly improving construction efficiency and reducing costs.

[0048] like Figure 2As shown, the casting cavity 3 contains multiple longitudinal reinforcing bars 6 and multiple annular stirrups 7. The longitudinal reinforcing bars 6 are respectively located at both ends of the casting cavity 3, and the annular stirrups 7 are spaced apart along the length of the longitudinal reinforcing bars 6, fitted onto the outside of the longitudinal reinforcing bars 6 and fixedly connected to them. Concentrating the multiple longitudinal reinforcing bars 6 at both ends of the casting cavity 3 forms a strong edge restraint member. This structure effectively restrains the core concrete, greatly improving the compressive and bending resistance of the wall ends, giving the shear wall better ductility and energy dissipation capacity when subjected to horizontal loads such as wind loads and seismic actions, preventing brittle failure. By arranging the annular stirrups 7 at intervals along the longitudinal direction and tightening the longitudinal reinforcing bars 6, a rigid spatial grid skeleton is formed. This skeleton is not easily displaced or deformed during concrete pouring, ensuring a uniform thickness of the reinforcing bar protective layer, thereby guaranteeing the compactness of the poured concrete and the final forming quality, ensuring that the wall strength meets design requirements.

[0049] Preferably, such as Figure 1 As shown, the composite insulation outer layer 1 also includes a crack-resistant layer 12. The crack-resistant layer 12 is disposed on the outer surface of the insulation layer 13. Completing the construction of the crack-resistant layer 12 during the factory prefabrication stage results in significantly higher quality than on-site work, achieving optimal crack resistance. This ensures that the modular building has a high-performance external envelope system upon delivery, reducing the need and cost of later maintenance and improving building quality.

[0050] Preferably, such as Figure 1 As shown, the composite insulation outer layer 1 also includes an exterior finish 11. The exterior finish 11 is disposed on the outer surface of the crack-resistant layer 12. By integrating the exterior finish 11 onto the outer side of the crack-resistant layer 12, the composite insulation outer layer 1 possesses a complete building facade effect upon leaving the factory. This design completely pre-processes the exterior decoration at the factory stage, avoiding the safety risks and quality fluctuations caused by on-site high-altitude operations. This not only significantly shortens the on-site construction cycle but also ensures the construction precision and consistency of the decorative effect of the facade, enhancing the overall quality and appearance of the building.

[0051] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0052] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0053] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0054] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0055] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A single-sided composite external thermal insulation shear wall for modular buildings, characterized in that, It includes an adjacent spaced-apart composite insulation outer layer (1) and inner leaf layer (2), and a plurality of tie members (4) for connecting the two, wherein a casting cavity (3) is formed between the composite insulation outer layer (1) and the inner leaf layer (2); The composite insulation outer layer (1) includes an insulation layer (13), a waterproof layer (15), and an outer leaf layer (16) that are fixedly connected from the outside to the inside. One end of each of the tie members (4) is fixedly connected to the outer leaf layer (16), and the other end extends into the casting cavity (3) and is fixedly connected to one end of the steel reinforcement skeleton (8) provided in the casting cavity (3). The other end of the steel reinforcement skeleton (8) is anchored in the inner leaf layer (2).

2. The single-sided composite external thermal insulation shear wall for modular buildings as described in claim 1, characterized in that: The insulation layer (13) is composed of multiple horizontally and vertically arranged vacuum insulation panels (131), and there is a gap between two adjacent vacuum insulation panels (131). The gaps between the vacuum insulation panels (131) are filled with thermal insulation mortar (132).

3. The single-sided composite external thermal insulation shear wall for modular buildings as described in claim 2, characterized in that: Each of the vacuum insulation panels (131) is fixedly connected to the outside of the waterproof layer (15) by adhesive mortar (14).

4. The single-sided composite external thermal insulation shear wall for modular buildings as described in claim 3, characterized in that: It also includes multiple thermal insulation anchors (5); One end of the thermal insulation anchor (5) is anchored to the outside of the vacuum insulation board (131), and the other end passes through the thermal insulation mortar (132), the bonding mortar (14) and the waterproof layer (15) in sequence and is fixedly connected to the outer leaf layer (16).

5. The single-sided composite external thermal insulation shear wall for modular buildings as described in claim 2, characterized in that: The gap width between two adjacent vacuum insulation panels (131) is less than 5 mm.

6. The single-sided composite external thermal insulation shear wall for modular buildings as described in claim 1, characterized in that: The tie member (4) includes a tie bolt (41) and a tie nut (42) threadedly connected to the tie bolt (41). One end of the tie bolt (41) is fixedly connected to the outer leaf layer (16), and the other end extends into the casting cavity (3). The extended end is provided with external threads, and the tie nut (42) is screwed onto the external threads of the tie bolt (41). One end of the steel reinforcement cage (8) is anchored to the tie nut (42).

7. The single-sided composite external thermal insulation shear wall for modular buildings as described in claim 1, characterized in that: The outer blade layer (16) includes an outer blade plate (161) and a plurality of transversely arranged reinforcing steel plates (162) fixedly connected to its inner side. Both the outer leaf plate (161) and the reinforcing steel plate (162) are provided with through holes for the tie member (4) to pass through, and multiple reinforcing steel plates (162) are arranged at intervals along the longitudinal direction of the outer leaf plate (161).

8. The single-sided composite external thermal insulation shear wall for modular buildings as described in claim 1, characterized in that: The composite thermal insulation outer layer (1) also includes a crack-resistant layer (12); The crack-resistant layer (12) is disposed on the outer surface of the thermal insulation layer (13).

9. The single-sided composite external thermal insulation shear wall for modular buildings as described in claim 8, characterized in that: The composite thermal insulation outer layer (1) also includes an outer veneer (11); The outer surface (11) is disposed on the outer side of the crack-resistant layer (12).

10. The single-sided composite external thermal insulation shear wall for modular buildings as described in claim 1, characterized in that: The casting cavity (3) is provided with multiple longitudinal steel bars (6) and multiple annular stirrups (7); Multiple longitudinal reinforcing bars (6) are respectively disposed at both ends of the casting cavity (3); Multiple annular stirrups (7) are arranged at intervals along the length direction of the longitudinal steel bar (6), and are sleeved on the outside of the longitudinal steel bar (6) and fixedly connected to the longitudinal steel bar (6).

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