Modular building external wall and connection structure

Abstract

The utility model relates to the technical field of modularization building, especially a kind of outer wall wall of modularization building and connecting structure, comprising: concrete module wall, the top and bottom of the concrete module wall are equipped with first grouting cavity and second grouting cavity respectively, and the first grouting cavity and second grouting cavity are used for pouring concrete;The side of the first grouting cavity and second grouting cavity has the cavity mouth that communicates outside;Reinforcing bar, the reinforcing bar penetrates the concrete module wall, the first end of the reinforcing bar is inserted into the first grouting cavity, and the second end of the reinforcing bar is inserted into the second grouting cavity;Steel formwork assembly, the steel formwork assembly can be opened and cover the cavity mouth of the first grouting cavity and second grouting cavity. By setting grouting cavity at the top and bottom of concrete module wall, it is convenient for construction personnel to connect reinforcing bar, and concrete pouring.

Description

Technical Field

[0001] This utility model relates to the field of modular building technology, and in particular to an exterior wall and connection structure for a modular building. Background Technology

[0002] With the acceleration of industrialization in the construction industry, modular buildings have been widely used due to their advantages such as high construction efficiency and controllable quality. However, in modular building systems (especially precast concrete modules), reliable connection between upper and lower walls remains a key technical bottleneck for the industry, mainly manifested in the following aspects: The current mainstream grouting sleeve connection method has multiple construction difficulties, requiring precise alignment between the grouting sleeve and the reinforcing steel (allowable deviation is often less than ±2mm), and on-site hoisting and adjustment time accounts for more than 30% of the overall construction period. Grouting operations rely on high-pressure grouting equipment, and there is a risk of sleeve "blockage" due to insufficient grout fluidity, and the grouting sleeve also suffers from incomplete grouting. Compared with cast-in-place structures, the overall cost of grouting sleeve connections increases the construction cost of modular buildings, and the cost of measures is high. To solve the above technical problems, there is an urgent need for a modular building exterior wall that can reduce the operational difficulty of connecting upper and lower module exterior walls, while ensuring overall rigidity and improving wall installation efficiency, thereby improving construction efficiency. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a modular building exterior wall and connection structure, which solves the technical problem of cumbersome operation of connecting exterior walls through grouting sleeves.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0007] An exterior wall of a modular building, comprising:

[0008] A concrete modular wall, wherein the top and bottom of the concrete modular wall are respectively provided with a first grouting cavity and a second grouting cavity, the first grouting cavity and the second grouting cavity are used for pouring concrete; the sides of the first grouting cavity and the second grouting cavity have openings that communicate with the outside.

[0009] The reinforcing bar penetrates the concrete module wall, with its first end extending into the first grouting cavity and its second end extending into the second grouting cavity;

[0010] A steel formwork assembly, which can be opened to cover the openings of the first grouting cavity and the second grouting cavity.

[0011] The steel formwork assembly includes a first plate and a second plate. The first plate is rotatably connected to the first end of the second plate, and the second end of the second plate is fixedly connected to the concrete module wall by bolts.

[0012] It also includes fasteners, which are rectangular columnar structures used to fix the steel formwork assembly;

[0013] The fastener has a groove in the middle, and the fastener is slidably connected to the bolt through the groove;

[0014] The bolt passes through the groove and the second plate, and the first end of the bolt is fixedly connected to the concrete module wall.

[0015] The second end of the bolt is provided with a nut, and the bolt is threadedly connected to the nut.

[0016] The number of bolts is at least two.

[0017] A limiting plate is also provided between the nut and the fixing member, and the width of the limiting plate is greater than that of the sliding groove.

[0018] It also includes a connecting sleeve, which is connected to the end of the reinforcing bar;

[0019] The inner wall of the connecting sleeve is provided with internal threads, and the end of the reinforcing bar is provided with external threads. The connecting sleeve is threadedly connected to the end of the reinforcing bar.

[0020] The reinforcing bars near the openings of the first and second grouting cavities are straight.

[0021] The end of the reinforcing bar away from the opening of the first grouting cavity and the second grouting cavity has a bend, so that the end of the reinforcing bar extends into the first grouting cavity and the second grouting cavity.

[0022] The top surface of the first grouting cavity is connected to the outside, and the bottom surface of the first grouting cavity is a plane;

[0023] The bottom surface of the second grouting cavity is connected to the outside, and the top surface of the second grouting cavity is an inclined surface.

[0024] A connection structure for an exterior wall, employing the aforementioned exterior wall structure;

[0025] The second grouting cavity of the upper concrete module wall is connected to the first grouting cavity of the lower concrete module wall, so that the second grouting cavity and the first grouting cavity form a grouting cavity.

[0026] The second grouting cavity and the side of the first grouting cavity that communicates with the outside form an opening;

[0027] The steel formwork assembly can be opened to cover the cavity.

[0028] The ends of the reinforcing bars of the upper concrete modular wall and the reinforcing bars of the lower concrete modular wall are connected by a connecting sleeve.

[0029] The grouting cavity is filled with concrete mortar.

[0030] (III) Beneficial Effects

[0031] The beneficial effects of this utility model are as follows: This utility model provides an exterior wall for a modular building, with grouting cavities set at the top and bottom of the concrete modular wall. The reinforcing bars inside the wall extend into the grouting cavities, facilitating the connection of the ends of the reinforcing bars on adjacent floors by construction workers. The reinforcing bars of the concrete modular walls on adjacent floors can be quickly connected using connecting sleeves, improving construction efficiency.

[0032] The grouting cavities on adjacent floors can be connected, which facilitates concrete pouring at the connection nodes of the external walls. At the same time, after the connection, the grouting cavity as a whole has no narrow parts, which can avoid local blockage.

[0033] The grouting cavity opening is covered by a steel formwork assembly, which includes a rotatable first plate and a second plate fixedly connected to the concrete modular wall. This allows for grouting into both the first and second grouting cavities after the steel formwork assembly is installed. When grouting is needed, the first plate is rotated to create a grouting port on the upper part of the steel formwork assembly. The grouting process can be monitored through this port. Furthermore, the grouting cavity is relatively large with no narrow sections, preventing localized blockages during grouting. After grouting is complete, the first plate is closed, effectively sealing the grouting cavity as a whole, facilitating concrete molding.

[0034] The steel formwork assembly has a sliding fastener on its exterior. When grout is injected into the grouting cavity, the fastener is located outside the second plate and does not obstruct the rotation and opening of the first plate. After grouting is completed, the fastener is slid upward to fix the second and first plates, thus realizing the formwork function of the steel formwork assembly. Attached Figure Description

[0035] Figure 1 This is a perspective view of the exterior wall structure of this utility model (with steel formwork assembly);

[0036] Figure 2 This is a perspective view of the exterior wall structure of this utility model (without steel formwork components);

[0037] Figure 3 This is a side view of the exterior wall of this utility model;

[0038] Figure 4 This is a sectional view of the exterior wall of this utility model;

[0039] Figure 5 A three-dimensional view of the external wall connection structure of this utility model after concrete has been poured;

[0040] Figure 6 for Figure 1 A magnified view of a section at point A within the center frame.

[0041] [Explanation of Labels in the Attached Image]

[0042] 1: Concrete modular wall; 11: First grouting cavity; 12: Second grouting cavity; 13: Grouting section wall;

[0043] 2: Reinforcing steel bars;

[0044] 3: Connecting sleeve;

[0045] 4: Steel formwork assembly; 41: First panel; 42: Second panel;

[0046] 5: Fasteners;

[0047] 6: Bolts;

[0048] 7: Nut;

[0049] 8: Limit plate. Detailed Implementation

[0050] 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.

[0051] This utility model proposes a modular building exterior wall, which aims to optimize the connection structure of the modular exterior wall. A first grouting cavity 11 and a second grouting cavity 12 are respectively provided at the top and bottom of the concrete modular wall 1. The first grouting cavity 11 can be connected with the second grouting cavity 12 of the concrete modular wall 1 on the adjacent floor to form a whole grouting cavity, which facilitates the later pouring of concrete and connects the concrete modular walls 1 on the adjacent floors.

[0052] Meanwhile, the first grouting cavity 11 and the second grouting cavity 12 also have the function of facilitating the connection of the reinforcing bars 2. The two ends of the reinforcing bars 2 inside the concrete modular wall 1 extend into the first grouting cavity 11 and the second grouting cavity 12 respectively, which makes it convenient for construction personnel to connect the reinforcing bars 2 before pouring concrete.

[0053] The steel bars 2 of the concrete modular wall 1 on adjacent floors are connected by threaded connecting sleeves 3. This connection method is quick and convenient, which can improve construction efficiency.

[0054] After the steel reinforcement is installed, the openings of the first grouting cavity 11 and the second grouting cavity 12 are covered with steel formwork assembly 4. The steel formwork assembly 4 includes a first plate 41 that can be rotatably opened and a second plate 42 that is fixedly connected to the concrete modular wall 1, so as to facilitate grouting into the first grouting cavity 11 and the second grouting cavity 12 after the steel formwork assembly 4 is installed.

[0055] 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.

[0056] This utility model provides an exterior wall for a modular building, applicable to the exterior walls of modular buildings, comprising: a concrete modular wall 1 and a steel formwork assembly 4. The concrete modular wall 1 has a first grouting cavity 11 and a second grouting cavity 12 at its top and bottom, respectively, for pouring concrete. The sides of the first grouting cavity 11 and the second grouting cavity 12 have openings communicating with the outside. The steel formwork assembly 4 can be opened to cover the openings of the first grouting cavity 11 and the second grouting cavity 12. When the steel formwork assembly 4 is opened, construction workers can inject grout into the first grouting cavity 11 and the second grouting cavity 12.

[0057] The concrete modular wall 1 is provided with multiple reinforcing bars 2, which penetrate the concrete modular wall 1. The first end of the reinforcing bar 2 extends into the first grouting cavity 11, and the second end extends into the second grouting cavity 12. The first grouting cavity 11 and the second grouting cavity 12 facilitate the connection of the ends of the reinforcing bars 2 on adjacent floors by construction personnel. The reinforcing bars 2 on the side adjacent to the cavity opening of the first grouting cavity 11 and the second grouting cavity 12 are straight. Since there is a grouting section wall 13 on the side of the first grouting cavity 11 and the second grouting cavity 12 that is not connected to the outside, in order to enable the reinforcing bars 2 in this part of the wall to also be connected, the ends of the reinforcing bars 2 away from the cavity openings of the first grouting cavity 11 and the second grouting cavity 12 are bent, so that the ends of the reinforcing bars 2 can extend into the first grouting cavity 11 and the second grouting cavity 12.

[0058] The reinforcing bars 2 of the concrete modular walls 1 on adjacent floors are fixedly connected by connecting sleeves 3. The inner wall of the connecting sleeve 3 is provided with internal threads, and the end of the reinforcing bar 2 is provided with external threads. The connecting sleeve 3 is threadedly connected to the end of the reinforcing bar 2. The connecting sleeve 3 enables quick connection of the reinforcing bars 2 on the upper and lower floors, improving construction efficiency.

[0059] The steel formwork assembly 4 is installed after the steel bars 2 of the concrete modular wall 1 on the adjacent floor are connected. The first grouting cavity 11 and the second grouting cavity 12 are sealed by setting the steel formwork assembly 4.

[0060] The steel formwork assembly 4 includes a first plate 41 and a second plate 42. The first plate 41 is rotatably connected to the first end of the second plate 42, and the second end of the second plate 42 is connected to the concrete modular wall 1. The lower part of the second plate 42 has a through hole for bolts 6, which pass through the through hole and are fixedly connected to the concrete modular wall 1. By setting a rotatable first plate 41 on the top of the second plate 42, an opening that can be opened and closed is formed in the upper part of the steel formwork assembly 4, facilitating concrete pouring. A pouring pipe and vibrator can be lowered into the first grouting cavity 11 and the second grouting cavity 12 by rotating the grouting port formed by the first plate 41. When grouting is required into the first grouting cavity 11 and the second grouting cavity 12, the first plate 41 is rotated to open, allowing grouting to proceed. During the grouting process, the grouting status can be monitored at any time through the grouting port formed by the first plate 41. After grouting is completed, the first plate 41 is rotated and closed to achieve the sealing and curing of the first grouting chamber 11 and the second grouting chamber 12.

[0061] It also includes a fastener 5, which is a rectangular column structure used to fix the steel formwork assembly 4. The fastener 5 has a groove in its middle, which is a through groove connecting opposite sides. The fastener 5 is slidably connected to the bolt 6 through the groove. The bolt 6 passes through the groove and the through hole of the second plate 42. The first end of the bolt 6 is fixedly connected to the concrete modular wall 1, and the second end of the bolt 6 has a nut 7. The bolt 6 and the nut 7 are threaded together to limit and fix the fastener 5.

[0062] When using the equipment, the construction personnel first fix the fastener 5 to the outer side of the second plate 42 using bolts 6 and nuts 7. Then, they rotate to open the first plate 41 and inject grout into the first grouting chamber 11 and the second grouting chamber 12. After the construction personnel have finished grouting, they rotate to close the first plate 41, sealing the first grouting chamber 11 and the second grouting chamber 12. They then adjust the nuts 7 to allow the fastener 5 to slide, and slide the fastener 5 upwards so that it is simultaneously located on the outer side of both the first plate 41 and the second plate 42. Finally, they adjust the nuts 7 again to fix the fastener 5, thus completing the simultaneous fixing of the first plate 41 and the second plate 42.

[0063] The number of bolts 6 is at least two. By setting at least two bolts 6, the sliding direction of the fixing part 5 can be positioned so that the fixing part 5 slides along the preset direction and there will be no rotational misalignment.

[0064] A limiting plate 8 is also provided between the nut 7 and the fixing member 5. The width of the limiting plate 8 is greater than that of the sliding groove. Since the diameter of the nut 7 is relatively small, the limiting plate 8 is used to improve the fixing effect of the nut 7 on the fixing member 5.

[0065] The top surface of the first grouting cavity 11 is open to the outside, and the bottom surface of the first grouting cavity 11 is flat. The bottom surface of the second grouting cavity 12 is open to the outside, and the top surface of the second grouting cavity 12 is inclined. The second grouting cavity 12 of the concrete modular wall 1 on the adjacent floor can be connected to the first grouting cavity 11, so that the second grouting cavity 12 and the first grouting cavity 11 form a grouting cavity. Concrete mortar is poured into the grouting cavity, so that the two concrete modular walls 1 on the adjacent floor form a stable connection. By setting the second grouting cavity 12 and the first grouting cavity 11, it is convenient to pour concrete at the connection node of the external wall. At the same time, the grouting cavity formed by the second grouting cavity 12 and the first grouting cavity 11 has no narrow parts, which is more conducive to concrete pouring and can avoid local blockage.

[0066] This embodiment of the invention also provides a connection structure for an exterior wall. Using the aforementioned exterior wall, the ends of the reinforcing bars 2 of the upper concrete modular wall 1 and the lower concrete modular wall 1 are connected via connecting sleeves 3. The second grouting cavity 12 of the upper concrete modular wall 1 is connected to the first grouting cavity 11 of the lower concrete modular wall 1, forming a single grouting cavity. The second grouting cavity 12 and the first grouting cavity 11 form an opening on their sides that communicate with the outside. The steel formwork assembly 4 can be opened to cover this opening.

[0067] The steel formwork assembly 4 has a rotatable first plate 41. When construction workers need to grout the grouting cavity, they rotate and open the first plate 41 to pour concrete mortar into the cavity. Grouting stops once the concrete mortar reaches the top of the second plate 42 to prevent overflow. Then, the first plate 41 is rotated to close, sealing the grouting cavity. Simultaneously, the nut 7 is adjusted to allow the fixing member 5 to slide upwards, positioning it on the outer side of the first and second plates 41 and 42. The nut 7 is then adjusted again to secure the fixing member 5, completing the fixation of the first and second plates 41 and 42. After the concrete has cured, the steel formwork assembly 4 and fixing member 5 are removed. The remaining un-poured portion at the top of the second grouting cavity 12 is smoothed with high-strength mortar, completing the installation of the connection node between adjacent floor exterior walls.

[0068] This external wall connection method can also be applied to precast basement exterior walls and precast boot-foot walls.

[0069] This utility model provides an exterior wall for a modular building. Grouting cavities are provided at the top and bottom of the concrete modular wall 1, with reinforcing bars 2 extending into these cavities. This facilitates the connection of the ends of the reinforcing bars 2 between adjacent floors by construction workers. The reinforcing bars 2 of the concrete modular walls 1 on adjacent floors are quickly connected via connecting sleeves 3, improving construction efficiency.

[0070] The grouting cavities on adjacent floors can be connected. The openings of the grouting cavities are covered by steel formwork assembly 4. Steel formwork assembly 4 includes a rotatable first plate 41 and a second plate 42 fixedly connected to the concrete modular wall 1, facilitating grouting into the first grouting cavity 11 and the second grouting cavity 12 after the steel formwork assembly 4 is installed. When grouting is required, the first plate 41 is opened, forming a grouting port on the upper part of the steel formwork assembly 4. During the grouting process, the grouting status can be monitored at any time through the grouting port. Simultaneously, the overall size of the grouting cavity is relatively large, with no narrow sections, preventing local blockages during grouting. After grouting is completed, the first plate 41 is closed, effectively sealing the grouting cavity as a whole, which is beneficial for concrete molding.

[0071] The steel formwork assembly 4 is provided with a sliding fastener 5 on its exterior. When grout is injected into the grouting cavity, the fastener 5 is located outside the second plate 42 and does not obstruct the rotation and opening of the first plate 41. After grouting is completed, the fastener 5 is slid upward to fix the second plate 42 and the first plate 41, thereby realizing the formwork function of the steel formwork assembly 4.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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. An exterior wall of a modular building, characterized in that, include: A concrete modular wall (1) is provided with a first grouting cavity (11) and a second grouting cavity (12) at its top and bottom, respectively. The first grouting cavity (11) and the second grouting cavity (12) are used for pouring concrete. The sides of the first grouting cavity (11) and the second grouting cavity (12) have openings that communicate with the outside. The reinforcing bar (2) penetrates the concrete module wall (1), with the first end of the reinforcing bar (2) extending into the first grouting cavity (11) and the second end of the reinforcing bar (2) extending into the second grouting cavity (12); A steel formwork assembly (4) is openable and covers the openings of the first grouting cavity (11) and the second grouting cavity (12).

2. The exterior wall of the modular building according to claim 1, characterized in that, The steel formwork assembly (4) includes a first plate (41) and a second plate (42). The first plate (41) is rotatably connected to the first end of the second plate (42), and the second end of the second plate (42) is fixedly connected to the concrete module wall (1) by bolts (6).

3. The exterior wall of the modular building according to claim 2, characterized in that, It also includes a fastener (5), which has a rectangular column structure and is used to fix the steel formwork assembly (4). The fastener (5) has a groove in the middle, and the fastener (5) is slidably connected to the bolt (6) through the groove; The bolt (6) passes through the groove and the second plate (42), and the first end of the bolt (6) is fixedly connected to the concrete module wall (1); The second end of the bolt (6) is provided with a nut (7), and the bolt (6) is threadedly connected to the nut (7); The number of bolts (6) is at least two.

4. The exterior wall of the modular building according to claim 3, characterized in that, A limiting plate (8) is also provided between the nut (7) and the fixing member (5), and the width of the limiting plate (8) is greater than that of the sliding groove.

5. The exterior wall of the modular building according to claim 1, characterized in that, It also includes a connecting sleeve (3), which is connected to the end of the reinforcing bar (2); The inner wall of the connecting sleeve (3) is provided with internal threads, and the end of the reinforcing bar (2) is provided with external threads. The connecting sleeve (3) is threadedly connected to the end of the reinforcing bar (2).

6. The exterior wall of the modular building according to claim 1, characterized in that, The reinforcing bars (2) near the openings of the first grouting cavity (11) and the second grouting cavity (12) are straight; The end of the reinforcing bar (2) away from the opening of the first grouting cavity (11) and the second grouting cavity (12) is bent so that the end of the reinforcing bar (2) extends into the first grouting cavity (11) and the second grouting cavity (12).

7. The exterior wall of the modular building according to claim 1, characterized in that, The top surface of the first grouting cavity (11) is connected to the outside, and the bottom surface of the first grouting cavity (11) is a plane; The bottom surface of the second grouting cavity (12) is connected to the outside, and the top surface of the second grouting cavity (12) is an inclined surface.

8. A connection structure for an exterior wall, characterized in that, The exterior wall structure described in any one of claims 1-7 is adopted; The second grouting cavity (12) of the upper concrete module wall (1) is connected to the first grouting cavity (11) of the lower concrete module wall (1), so that the second grouting cavity (12) and the first grouting cavity (11) form a grouting cavity; The second grouting cavity (12) and the first grouting cavity (11) form an opening on their sides that are connected to the outside. The steel formwork assembly (4) can be opened to cover the cavity.

9. The connection structure of the exterior wall according to claim 8, characterized in that, The ends of the reinforcing bars (2) of the upper concrete module wall (1) and the reinforcing bars (2) of the lower concrete module wall (1) are connected by a connecting sleeve (3).

10. The connection structure of the exterior wall according to claim 9, characterized in that, The grouting cavity is filled with concrete mortar.

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