Slotted composite module wall of concrete module combined building and connecting method of slotted composite module wall

Abstract

The invention discloses a slotting type composite module wall of a concrete module combined building and a connecting method thereof, the slotting type composite module wall comprises concrete modules which are mutually butted and spliced in the transverse direction, each concrete module comprises a module wall, grouting grooves extending in the vertical direction of the module wall are formed in the module wall in a segmented mode, and the grouting grooves extend in the vertical direction of the module wall. Sectional shear keys protruding out of the outer surface are arranged on the outer surface, without the grouting groove, of the module wall, and multiple layers of protruding horizontal stirrups are arranged in the grouting groove. During butt joint, the grouting grooves are correspondingly combined to form a grouting channel, a connecting rib is inserted into the grouting channel, and the connecting rib is connected with the protruding horizontal stirrup; and after the grouting channels are filled with the first slurry and the areas, without the grouting grooves, between the module walls are filled with the second slurry, the slotted composite module wall is formed.

Description

Technical Field

[0001] The invention relates to a slotted composite module wall of a concrete module combined building and a connection method thereof, belonging to the field of assembled and advanced concrete building construction. Background Art

[0002] Modular Integrated Construction (MiC) is a new type of prefabricated construction method that has gradually developed and applied in recent years. It is located at a higher level in the modular building system and further emphasizes the intelligent construction of modular buildings, the degree of prefabrication of modular structural components, and the structural form innovation of modular buildings. Modular integrated construction prefabricates modules in the factory, then transports these modules to the construction site for on-site connection and rapid assembly into a whole, completing the entire construction process. Modular integrated construction technology can significantly improve the engineering quality of the entire building. At the same time, because a large amount of structural, decoration, plumbing and electrical engineering are completed in the factory, it can greatly reduce the amount of on-site construction work, improve construction efficiency, save on-site labor, and achieve the goal of efficient and green construction.

[0003] Currently, modules used in real-world projects can be divided into steel and concrete modules based on their primary construction materials. Compared to steel modules, concrete modules offer advantages such as sound insulation and fire resistance, and have broad application prospects in residential buildings. In construction, to maximize the advantages of modular buildings, six-sided modules are often used. Consequently, installed concrete modules eliminate lateral working surfaces for adjacent, pending modules. Furthermore, the interiors of concrete modules have already been finished, preventing construction work from occurring. Furthermore, commonly used prefabricated concrete component connection techniques require lateral working surfaces, making them unsuitable for concrete modular construction. Existing methods for connecting modules in concrete modular buildings typically include the following: 1. Post-cast strip connections similar to traditional vertical shear walls; 2. Using two modular walls as formwork with a wide cavity in between for on-site concrete pouring; 3. Using composite walls with multiple channels for on-site reinforcement insertion and concrete pouring. However, these connection methods either require on-site lateral working surfaces (method 1), require extensive on-site cast-in-place work (methods 1, 2, and 3), or require on-site reinforcement work (method 3), which is inefficient and difficult to ensure in terms of quality. These connection methods contradict the efficient construction advocated by modular buildings and also limit the promotion and application of concrete modular construction in architecture. Therefore, developing innovative inter-module connection methods for concrete modular buildings has important engineering practical value.

[0004] It should be noted that the information disclosed in the above background technology section is only used to understand the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art, the present invention provides a slotted composite module wall of a concrete module combined building that does not require a lateral working surface and has high structural integrity, and a connection method thereof.

[0006] The present invention adopts the following technical solutions:

[0007] In a first aspect, a slotted composite modular wall for a concrete modular building is characterized by comprising concrete modules that are laterally butted and assembled, each concrete module comprising a modular wall, wherein the modular wall is segmented with grouting grooves extending vertically along the modular wall, wherein outer surfaces of the modular wall not provided with the grouting grooves are provided with segmented shear keys protruding from the outer surface, and wherein the grouting grooves are provided with multiple layers of protruding horizontal stirrups;

[0008] When two modular walls are butted against each other in the transverse direction and assembled, the grouting grooves are correspondingly merged to form a grouting channel, in which connecting bars are inserted, and the connecting bars are connected to the protruding horizontal stirrups in the grouting channel to connect the two concrete modules; after the first slurry is filled into the grouting channel between the two modular walls and the second slurry is filled into the area between the modular walls where the grouting grooves are not provided, the two concrete modules form the slotted composite modular wall through the combination of the connecting bars, the protruding horizontal stirrups and the first slurry, and the combination of the shear keys and the second slurry.

[0009] In some embodiments, the connecting reinforcement includes a vertical main reinforcement and a plurality of connecting limbs arranged vertically along both sides of the vertical main reinforcement, the connecting limb on one side is correspondingly engaged with the protruding horizontal stirrups in the grouting groove on one module wall, and the connecting limb on the other side is correspondingly engaged with the protruding horizontal stirrups in the grouting groove on another module wall.

[0010] In some embodiments, the connecting limb is C-shaped or L-shaped.

[0011] In some embodiments, the grouting groove is a trapezoidal opening, an inverted trapezoidal opening, or a rectangular opening, and the longitudinal extension height of the grouting groove is consistent with the height of the module wall.

[0012] In some embodiments, the protruding horizontal stirrup is in a closed rectangular, semicircular, or semi-open C-shape or L-shape.

[0013] In some embodiments, the protruding horizontal stirrups are closed, and both ends of the protruding horizontal stirrups are connected to the bottom of the grouting groove. There is a gap between the protruding horizontal stirrups and the side walls of the grouting groove. After the two concrete modules are laterally docked and assembled with each other, the gap between the side walls of the grouting channel and the protruding horizontal stirrups constitutes a first space, and a second space is formed between the corresponding protruding horizontal stirrups between the two module walls. The connecting bar is inserted from the first space to the lower edge of the uppermost connecting limb of the connecting bar close to the protruding horizontal stirrups of the uppermost layer, and then moves horizontally in the second space to the middle area of ​​the protruding horizontal stirrups and then inserted downward, so that each connecting limb of the connecting bar is correspondingly engaged with the protruding horizontal stirrups of each layer.

[0014] In some embodiments, the protruding horizontal stirrups are closed, and both ends of the protruding horizontal stirrups are connected to the side walls of the grouting groove. After the two concrete modules are laterally docked and assembled with each other, a third space is formed between the corresponding protruding horizontal stirrups between the two module walls. The connecting bar is inserted from the third space to the lower edge of the uppermost connecting limb of the connecting bar close to the protruding horizontal stirrups of the uppermost layer, and after the connecting bar is located in the middle area of ​​the protruding horizontal stirrups, it is rotated 90° in the third space and inserted downward, so that each connecting limb of the connecting bar is correspondingly engaged with the protruding horizontal stirrups of each layer.

[0015] In some embodiments, the protruding horizontal stirrups are semi-open, with one end of the protruding horizontal stirrups connected to the grouting groove and the other end open. After the two concrete modules are laterally docked and assembled with each other, the connecting limbs of the connecting bars are moved from the opening of the protruding horizontal stirrups to the middle area inside the protruding horizontal stirrups and then inserted, so that the connecting limbs of the connecting bars are correspondingly engaged with the protruding horizontal stirrups of each layer.

[0016] In some embodiments, a connecting channel is provided between adjacent grouting grooves on the modular wall to achieve single-point grouting and multi-groove filling; after the two modular walls are docked and assembled with each other in the transverse direction, the shear keys on the two modular walls are staggered; and vertical lap steel bars are also arranged in the wall of the modular wall where the grouting grooves are not provided.

[0017] In a second aspect, a method for connecting the slotted composite modular wall according to the first aspect is provided, comprising the following steps:

[0018] (1) After the two concrete modules are hoisted into place, the module walls of the two concrete modules are butted together in the horizontal direction, and the grouting grooves on the two module walls are correspondingly merged to form a vertical grouting channel;

[0019] (2) inserting connecting bars into each of the grouting channels so that the connecting bars are connected to the protruding horizontal stirrups in the grouting grooves on the two module walls to connect the two concrete modules;

[0020] (3) After sealing both sides of the module wall, the first slurry is filled into the grouting channel, and the second slurry is filled into the area between the module walls where the grouting groove is not provided, to form an integrally connected slotted composite module wall, wherein the first slurry is grouting material or concrete slurry, and the second slurry is grouting material or fine stone concrete slurry.

[0021] In some embodiments, the protruding horizontal stirrups are closed, both ends of the protruding horizontal stirrups are connected to the bottom of the grouting groove, and there is a gap between the protruding horizontal stirrups and the side walls of the grouting groove. After the two module walls are butt-jointed and assembled, the gap between the side walls of the grouting channel and the protruding horizontal stirrups constitutes a first space, and a second space is formed between the corresponding protruding horizontal stirrups between the two module walls; step (2) is: the connecting bar is inserted from the first space to the lower edge of the uppermost connecting limb of the connecting bar close to the protruding horizontal stirrup of the uppermost layer, and moves horizontally in the second space to the middle area of ​​the protruding horizontal stirrup and then inserted downward, so that each connecting limb of the connecting bar is correspondingly engaged with the protruding horizontal stirrups of each layer.

[0022] In some embodiments, the protruding horizontal stirrups are closed, and both ends of the protruding horizontal stirrups are connected to the side walls of the grouting groove. After the two modular walls are butt-jointed and assembled, a third space is formed between the corresponding protruding horizontal stirrups between the two modular walls. Step (2) is: the connecting bar is inserted from the third space to the lower edge of the uppermost connecting limb of the connecting bar close to the protruding horizontal stirrups of the uppermost layer, and after the connecting bar is located in the middle area of ​​the protruding horizontal stirrups, it is rotated 90° in the third space and inserted downward, so that each connecting limb of the connecting bar is correspondingly engaged with the protruding horizontal stirrups of each layer.

[0023] In some embodiments, the protruding horizontal stirrups are semi-open, with one end of the protruding horizontal stirrups connected to the grouting groove and the other end open; step (2) is: each connecting limb of the connecting bar is moved from the opening of the protruding horizontal stirrups to the middle area inside the protruding horizontal stirrups and then inserted, so that each connecting limb of the connecting bar is correspondingly engaged with the protruding horizontal stirrups of each layer.

[0024] The present invention has the following beneficial effects: the concrete modules of the present invention have segmented grouting grooves on the module walls, and segmented shear keys protruding from the outer surface of the module walls without grouting grooves are provided. Multiple layers of protruding horizontal stirrups are provided within the grouting grooves. When two module walls are laterally butted together for assembly, the grouting grooves merge to form a grouting channel. Connecting bars are inserted into the grouting channel, and the connecting bars are connected to each row of protruding horizontal stirrups within the grouting channel to connect the two concrete modules. After the grouting channel is filled with a first slurry (grouting material or concrete slurry) and the area between the module walls without the grouting grooves is filled with a second slurry (grouting material or fine stone concrete), the two concrete modules are integrally connected by the connecting bars, the protruding horizontal stirrups, and the first slurry, and the shear keys and the second slurry, forming a slotted composite module wall. The present invention does not require a lateral working surface and has high structural integrity, which can improve modular construction efficiency and economic benefits. Specifically, it also has the following advantages:

[0025] 1. Vertical grouting can be used to carry out on-site grouting or pouring of concrete from the top of the module. The amount of cast-in-place construction work is greatly reduced, the construction difficulty is greatly reduced, and no lateral working surface is required. This can solve the problem that the concrete module is not suitable for setting a lateral grouting working surface due to the mutual influence between modules during construction.

[0026] 2. The horizontal connection of concrete modules is adopted. Through the connection of connecting bars in the grouting grooves, shear keys and slurry bonding with concrete, a horizontal composite wall connection is formed. This can effectively bear and transmit the internal forces of the entire structure, improve the lateral force resistance of the entire concrete module combination building, significantly reduce the thickness of the module wall, and reduce the waste of usable space caused by the existence of non-structural walls, improve the economy and material utilization of the module combination building, and provide a competitive inter-module connection solution for concrete module combination buildings. It is particularly suitable for large modules or modules with too long walls.

[0027] 3. The use of grouting grooves and shear keys to form an integral composite wall can reduce the amount of on-site concrete pouring construction work and is particularly suitable for connecting large modules or modules with long walls. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a side view of a concrete module 1 according to embodiment 1 of the present invention;

[0029] Figure 2 This is a schematic diagram of two concrete modules assembled in Example 1 of the present invention;

[0030] Figure 3 is a side view of the inserted connecting rib of Example 1 of the present invention;

[0031] Figure 4 Schematic diagram of the horizontal projection position of the inserted connecting rib in Example 1 of the present invention;

[0032] Figure 5 This is the embodiment of the present invention 1 along Figure 4 Schematic diagram of the position of the connecting ribs inserted downward from the horizontal projection position;

[0033] Figure 6 The connecting ribs in Example 1 of the present invention reach Figure 5 Position, then move horizontally to the top view;

[0034] Figure 7 The connecting ribs in Example 1 of the present invention reach Figure 6 After the position is reached, the connecting ribs are inserted downwards to the side view of the final position;

[0035] Figure 8 This is a schematic diagram of the module after the connecting ribs are inserted in Example 1 of the present invention;

[0036] Figure 9 Schematic diagram of a slotted composite module wall formed after the grouting grooves and the gaps between the modules are filled with slurry according to Example 1 of the present invention;

[0037] Figure 10 is a schematic diagram of a protruding horizontal stirrup using a semi-closed method in Example 2 of the present invention;

[0038] Figure 11 is a side view of a concrete module 1 according to embodiment 3 of the present invention;

[0039] Figure 12 This is a top view of the positioning of the connecting rib when inserted downwardly in Example 3 of the present invention;

[0040] Figure 13 This is the third embodiment of the present invention. Figure 11 A side view of the positioning of the connecting rib inserted downward;

[0041] Figure 14 This is the third embodiment of the present invention. Figure 12 Schematic diagram of the positioning operation connecting rib rotation;

[0042] Figure 15 is a top view of the positioning of Example 3 of the present invention after the rotation operation;

[0043] Figure 16 This is the third embodiment of the present invention. Figure 14 Continue to insert the connecting rib downwards;

[0044] Figure 17 This is a schematic diagram of Example 3 of the present invention after the reinforcing bars are inserted. DETAILED DESCRIPTION

[0045] The following is a detailed description of the embodiments of the present invention. It should be emphasized that the following description is only exemplary and is not intended to limit the scope of the present invention and its application.

[0046] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, connection can be used for both fixing and coupling or communication.

[0047] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0049] Example 1

[0050] like Figures 1-9 As shown, the slotted composite modular wall of a concrete modular composite building includes two concrete modules 1 and 2 that are laterally butted and assembled. Grouting grooves 5 extending vertically along the module walls are provided in sections on the module walls 3 of both modules. The outer surfaces of the module walls not provided with grouting grooves 5 have segmented shear keys 7 protruding from the outer surfaces. Multiple layers of protruding horizontal stirrups 4 are arranged vertically within the grouting grooves 5. The grouting grooves 5 on the two module walls are identical. When they are laterally butted and assembled, the grouting grooves 5 merge to form grouting channels. The shear keys on the two module walls are staggered (i.e., the shear keys on the module wall 3 of concrete module 1 correspond to locations on the module wall 3 of concrete module 2 where shear keys are not provided, and similarly, the shear keys on the module wall 3 of concrete module 2 correspond to locations on the module wall 3 of concrete module 1 where shear keys are not provided). Connecting bars 6 are inserted within the grouting channels 5 and connect to the protruding horizontal stirrups 4 within the grouting channels to connect the two concrete modules. Construction includes the following steps:

[0051] (1) After the two concrete modules 1 and 2 are hoisted into place, the module walls 3 of the two concrete modules are butted together in the horizontal direction and assembled. The grouting grooves 5 on the two module walls can be merged one by one to form a vertical grouting channel due to the same spacing design, and the protruding horizontal stirrups 4 are exposed in the grouting grooves 5. In this example, the protruding horizontal stirrups 4 are a closed structure, and both ends of the protruding horizontal stirrups 4 are connected to the bottom of the grouting grooves 5. There is a gap between the protruding horizontal stirrups 4 and the side walls of the grouting grooves 5. After the two module walls are butt-jointed and assembled, the gap between the side walls of the grouting channel and the protruding horizontal stirrups constitutes a first space, and a second space is formed between the corresponding protruding horizontal stirrups between the two module walls;

[0052] (2) The connecting rib 6 is located in the first space (its horizontal projection position is shown in FIG. Figure 4 For ease of display, Figure 4 Only the concrete module 1 is drawn in the figure, that is, the figure only shows half of the first space), the lower edge of the connecting limb 61 inserted into the uppermost part of the connecting bar is close to the protruding horizontal stirrup 4 of the uppermost layer (as shown in FIG. Figure 5 For the convenience of display, Figure 5 Only the concrete module 1 is drawn in the figure), and then it moves horizontally to the second space and moves horizontally to the middle area of ​​the protruding horizontal stirrup 4 in the second space (as shown in FIG. Figure 6 As shown, for the convenience of display Figure 6 Only the concrete module 1 is drawn in the figure) and then inserted downward so that each connecting limb 61 of the connecting bar 6 is correspondingly engaged with the protruding horizontal stirrups 4 of each layer, completing the reinforcing bar insertion process (as shown in FIG. Figure 7 As shown, for the convenience of display Figure 7 Only the concrete module 1 is drawn, that is, the first space next to the protruding horizontal stirrup 4 is used as an insertion channel for the connecting reinforcement, and the second space is used as a horizontal movement channel for the connecting reinforcement.

[0053] (3) After the module is inserted into the connecting ribs, Figure 8 As shown, after sealing both sides of the module wall (which can be sealed with a sealing agent or by prefabricating the wall sealing flange with high precision in the factory), the first slurry is filled into the grouting channel until the first slurry is flush with the top surface of the grouting groove 5, so that the grouting grooves of the two module walls are connected as a whole through the exposed protruding horizontal stirrups and the inserted connecting bars. The second slurry is filled into the area between the module walls where the grouting groove is not provided, so that the two module walls are integrally connected through the shear key and the second slurry. Finally, the two concrete modules form a slotted composite module wall, as shown in FIG. Figure 9Figure 2 shows a schematic diagram of a slotted composite modular wall formed after the gaps between the grouting grooves and the modules are filled with grout. The first grout is a grouting material or concrete grout, and the second grout is a grouting material or fine aggregate concrete grout (e.g., a fine aggregate concrete grout with an aggregate particle size of 5 mm).

[0054] In this example, vertical lap steel bars 8 are also arranged in the module wall 3 of the concrete module 1 and the module wall 3 of the concrete module 2 without grouting grooves 5. Through the vertical lap steel bars 8, the upper and lower concrete modules (not shown) can be overlapped and connected vertically to increase the overall height of the slotted composite module wall.

[0055] Example 2

[0056] The difference from Example 1 is that the protruding horizontal stirrups 4 are changed from closed to semi-closed (e.g. Figure 10 As shown), when inserting the connecting bar 6 in step (2), it can be directly moved from the opening of the protruding horizontal stirrup 4 to the middle area inside the protruding horizontal stirrup 4 and then inserted, so that each connecting limb 61 of the connecting bar 6 is correspondingly engaged with the protruding horizontal stirrup 4 of each layer. This embodiment further simplifies the construction steps of inserting the connecting bar 6.

[0057] Example 3

[0058] like Figures 11-17 , which is a schematic diagram of embodiment 3 of the present invention.

[0059] The difference from Example 1 is that in this embodiment, the horizontal stirrups in the wall of the modular wall are directly used as protruding horizontal stirrups for connection, and the protruding horizontal stirrups are directly connected to the side of the grouting groove, so the construction method is slightly different. In this embodiment, the protruding horizontal stirrups are closed, and both ends of the protruding horizontal stirrups 4 are connected to the side walls of the grouting groove 5. There is no gap between the two ends of the protruding horizontal stirrups 4 and the side walls of the grouting groove 5. After the two modular walls are butt-jointed and assembled, a third space is formed between the corresponding protruding horizontal stirrups 4 between the two modular walls. When inserting the connecting bar 6 in step (2), the connecting bar 6 is inserted from the third space to the lower edge of the uppermost connecting limb of the connecting bar close to the protruding horizontal stirrups of the uppermost layer (such as Figure 12 As shown), and after the connecting bar is located in the middle area of ​​the protruding horizontal stirrup, it is rotated 90 degrees in the third space and inserted downward, so that each connecting limb 61 of the connecting bar is correspondingly engaged with the protruding horizontal stirrups of each layer (as shown Figure 14 、 15 , 16). In this example, the third space serves as both an insertion channel for the connecting rib and a rotation channel. The structure after the connecting rib is inserted is as follows Figure 17 shown.

[0060] In the above embodiment, no large spacing is required between two laterally adjacent module walls 3. The grouting grooves 5 provided in the two module walls are filled with the first slurry (grouting material or concrete slurry) and then connected to the exposed protruding horizontal stirrups 4 and the inserted connecting bars 6. The positions outside the grouting grooves 5 on the module walls are connected to each other through high-flowability grouting material or fine stone concrete (when a large spacing is provided between the two module walls 3 to meet the requirements of pouring and vibration) and shear keys 7. The two adjacent module walls are connected as a whole through the steel bars in the above-mentioned grouting grooves 5 and the slurry at the shear keys 7 in the thin filling layer outside the grouting grooves 5 is bonded to the module wall concrete to form a composite structural wall.

[0061] The present invention is not intended to limit or give specific values ​​of these design parameters, because these design parameters can be flexibly determined according to local structural design specifications and module sizes, or determined using experimental results in the case of over-limit design.

[0062] For example, by adopting high-performance grouting materials, such as adding steel fibers, the number, size, shape, position and spacing of the grouting grooves 5 can be appropriately selected while ensuring the connection performance and according to the flow characteristics of the grouting material, so as to meet the requirements of penetrating the height of the module wall and providing sufficient space for connecting steel bars to be inserted and grouting. For example, the grouting grooves can be trapezoidal openings, inverted trapezoidal openings or rectangular openings.

[0063] For example, the shape and size of the protruding horizontal stirrups 4 in the grouting groove must provide sufficient strength and space for connection with the connecting bars. The shape can be a closed rectangle, a semicircle, or a semi-open C- or L-shape. The material can be made of conventional steel bars bent or prefabricated C- or L-shaped steel sheets. The grouting groove can be set to a trapezoidal opening or an inverted trapezoidal opening, etc.

[0064] For example, the first slurry can be filled from the top of each grouting groove, or a connecting channel can be set between adjacent grouting grooves. The first slurry enters the adjacent grouting groove through the connecting channel due to gravity, and the grouting operation is completed when the slurry comes out from the top, thereby realizing single-point grouting and multi-groove filling.

[0065] For example, the shape and size of the connecting reinforcement 6, such as the diameter of the connecting limb (short limb), can be flexibly determined according to the shape of the grouting groove, the shape and size of the protruding horizontal stirrups, the strength of the steel used and the force magnitude, etc. It can be made by welding multiple identical C-shaped steel bars on a vertical main reinforcement bar, or by welding C-shaped steel bars or steel sheets to further improve the connection performance.

[0066] For example, the shape, size, and spacing of the shear keys 7 can be flexibly determined according to the size of the modular wall and the stress conditions in the modular building. They only need to provide sufficient shear bearing capacity and concrete restraint performance. For example, the shear keys can be embedded metal parts, embedded C-shaped or L-shaped steel bars or steel sheets, etc., or grooves can be set at corresponding positions in the concrete mold, and raised concrete strips are naturally formed after the concrete modular wall is poured to serve as shear keys.

[0067] Based on the above, the number, size, shape and shape of the grouting grooves and the shape of the connecting reinforcement can be optimized to improve the horizontal stress integrity and construction convenience of the composite wall. The shape and position of the shear keys can be optimized to ensure the stress integrity of the composite wall, and the effectiveness of the load transfer between concrete modules can be improved, thereby improving the lateral force resistance and integrity of the entire concrete module composite building.

[0068] The present invention does not intend to limit the number of modular walls 3 used, such as one, two or even four sides. As long as the force transmission between concrete modules and the local design specifications can be met, and the thickness of the modular wall 3 can be met, the connection method of the slotted composite modular wall of the present invention can be tried.

[0069] The above description further details the present invention in conjunction with specific / preferred embodiments, and the specific implementation of the present invention should not be construed as being limited to these descriptions. Persons skilled in the art will appreciate that, without departing from the spirit of the present invention, they may make various substitutions or modifications to the described embodiments, and these substitutions or modifications should be considered to fall within the scope of protection of the present invention. Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "preferred embodiments," "examples," "specific examples," or "some examples" indicates that the specific features, structures, materials, or characteristics described in conjunction with such embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of these 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 any one or more embodiments or examples. Persons skilled in the art may combine and assemble the different embodiments or examples described in this specification, as well as features of different embodiments or examples, without conflicting opinions. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions, and modifications may be made herein without departing from the scope of protection of the patent application.

Claims

1. A slotted composite modular wall for concrete modular building, characterized in that: The invention comprises concrete modules that are butted together in the transverse direction, each concrete module comprising a module wall, wherein the module wall is provided with grouting grooves extending vertically along the module wall in sections, and the outer surface of the module wall not provided with the grouting grooves is provided with segmented shear keys protruding from the outer surface, and multiple layers of protruding horizontal stirrups are provided in the grouting grooves; When two modular walls are butted against each other in the transverse direction and assembled, the grouting grooves are correspondingly merged to form a grouting channel, in which connecting bars are inserted, and the connecting bars are connected to the protruding horizontal stirrups in the grouting channel to connect the two concrete modules; after the first slurry is filled into the grouting channel between the two modular walls and the second slurry is filled into the area between the modular walls where the grouting grooves are not provided, the two concrete modules form the slotted composite modular wall through the combination of the connecting bars, the protruding horizontal stirrups and the first slurry, and the combination of the shear keys and the second slurry.

2. The slotted composite modular wall according to claim 1, wherein: The connecting reinforcement includes a vertical main reinforcement and a plurality of connecting limbs arranged vertically along both sides of the vertical main reinforcement. The connecting limb on one side is correspondingly engaged with the protruding horizontal stirrups in the grouting groove on one module wall, and the connecting limb on the other side is correspondingly engaged with the protruding horizontal stirrups in the grouting groove on another module wall.

3. The slotted composite modular wall according to claim 2, wherein: The connecting limb is either C-shaped or L-shaped.

4. The slotted composite modular wall according to claim 1, wherein: The grouting groove is a trapezoidal opening, an inverted trapezoidal opening, or a rectangular opening, and the longitudinal extension height of the grouting groove is consistent with the height of the module wall.

5. The slotted composite modular wall according to claim 1, wherein: The protruding horizontal stirrups are in the shape of a closed rectangle, a semicircle, or a semi-open C-shape or L-shape.

6. The slotted composite modular wall according to claim 2, wherein: The protruding horizontal stirrups are closed, and both ends of the protruding horizontal stirrups are connected to the bottom of the grouting groove. There is a gap between the protruding horizontal stirrups and the side walls of the grouting groove. After the two concrete modules are laterally docked and assembled with each other, the gap between the side walls of the grouting channel and the protruding horizontal stirrups constitutes a first space, and a second space is formed between the corresponding protruding horizontal stirrups between the two module walls. The connecting bar is inserted from the first space to the lower edge of the uppermost connecting limb of the connecting bar close to the protruding horizontal stirrups of the uppermost layer, and then moves horizontally in the second space to the middle area of ​​the protruding horizontal stirrups and then inserted downward, so that each connecting limb of the connecting bar is correspondingly engaged with the protruding horizontal stirrups of each layer.

7. The slotted composite modular wall according to claim 2, wherein: The protruding horizontal stirrups are closed, and both ends of the protruding horizontal stirrups are connected to the side walls of the grouting groove. After the two concrete modules are butt-jointed and assembled with each other in the transverse direction, a third space is formed between the corresponding protruding horizontal stirrups between the two module walls. The connecting bar is inserted from the third space to the lower edge of the uppermost connecting limb of the connecting bar close to the protruding horizontal stirrups of the uppermost layer, and after the connecting bar is located in the middle area of ​​the protruding horizontal stirrups, it is rotated 90° in the third space and inserted downward, so that each connecting limb of the connecting bar is correspondingly engaged with the protruding horizontal stirrups of each layer.

8. The slotted composite modular wall according to claim 2, wherein: The protruding horizontal stirrups are semi-open, with one end of the protruding horizontal stirrups connected to the grouting groove and the other end open. After the two concrete modules are assembled with each other in the transverse direction, the connecting limbs of the connecting bars are moved from the opening of the protruding horizontal stirrups to the middle area inside the protruding horizontal stirrups and then inserted, so that the connecting limbs of the connecting bars are correspondingly engaged with the protruding horizontal stirrups of each layer.

9. The slotted composite modular wall according to any one of claims 1 to 8, wherein: A connecting channel is provided between adjacent grouting grooves on the modular wall to realize single-point grouting and multi-groove filling; after the two modular walls are butt-jointed and assembled with each other in the transverse direction, the shear keys on the two modular walls are staggered; vertical lap steel bars are also arranged in the wall of the modular wall where the grouting grooves are not provided.

10. A method for connecting a slotted composite modular wall according to any one of claims 1 to 9, characterized in that: The steps include: (1) After the two concrete modules are hoisted into place, the module walls of the two concrete modules are butted together in the horizontal direction, and the grouting grooves on the two module walls are correspondingly merged to form a vertical grouting channel; (2) inserting connecting bars into each of the grouting channels so that the connecting bars are connected to the protruding horizontal stirrups in the grouting grooves on the two module walls to connect the two concrete modules; (3) After sealing both sides of the module wall, the first slurry is filled into the grouting channel, and the second slurry is filled into the area between the module walls where the grouting groove is not provided, to form an integrally connected slotted composite module wall, wherein the first slurry is grouting material or concrete slurry, and the second slurry is grouting material or fine stone concrete slurry.

11. The method for connecting slotted composite modular walls according to claim 10, wherein: The protruding horizontal stirrups are closed, and both ends of the protruding horizontal stirrups are connected to the bottom of the grouting groove. There is a gap between the protruding horizontal stirrups and the side walls of the grouting groove. After the two modular walls are butt-jointed and assembled, the gap between the side walls of the grouting channel and the protruding horizontal stirrups constitutes a first space, and a second space is formed between the corresponding protruding horizontal stirrups between the two modular walls. Step (2) is: The connecting bar is inserted from the first space to the lower edge of the uppermost connecting limb of the connecting bar close to the protruding horizontal stirrup of the uppermost layer, and is moved horizontally in the second space to the middle area of ​​the protruding horizontal stirrup and then inserted downward, so that each connecting limb of the connecting bar is correspondingly engaged with the protruding horizontal stirrups of each layer.

12. The method for connecting slotted composite modular walls according to claim 10, wherein: The protruding horizontal stirrups are closed, and both ends of the protruding horizontal stirrups are connected to the side walls of the grouting groove. After the two modular walls are butt-jointed and assembled, a third space is formed between the corresponding protruding horizontal stirrups between the two modular walls. Step (2) is: The connecting bar is inserted from the third space to the lower edge of the uppermost connecting limb of the connecting bar close to the protruding horizontal stirrup of the uppermost layer, and after the connecting bar is located in the middle area of ​​the protruding horizontal stirrup, it is rotated 90° in the third space and inserted downward, so that each connecting limb of the connecting bar is correspondingly engaged with the protruding horizontal stirrups of each layer.

13. The method for connecting slotted composite modular walls according to claim 10, wherein: The protruding horizontal stirrups are semi-open, with one end of the protruding horizontal stirrups connected to the grouting groove and the other end open; step (2) is: each connecting limb of the connecting bar is moved from the opening of the protruding horizontal stirrups to the middle area inside the protruding horizontal stirrups and then inserted, so that each connecting limb of the connecting bar is correspondingly engaged with the protruding horizontal stirrups of each layer.

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