A precast concrete wall connecting mechanism and modular integrated building

Abstract

This utility model discloses a precast concrete wall connection mechanism and a modular integrated building. The precast concrete wall connection mechanism includes: two longitudinal walls, one transverse wall, multiple stirrups, two sets of wire rope sleeves, and inserts. The two longitudinal walls are arranged coplanarly and spaced apart to form a connection gap between them. The transverse wall is arranged perpendicular to the longitudinal walls and aligned with the connection gap. The stirrups are U-shaped, with both ends embedded in the transverse wall. All stirrups are collinear with the stirrup holes enclosed by the transverse wall in the vertical direction. The two sets of wire rope sleeves correspond one-to-one with the two longitudinal walls. The wire rope sleeves are U-shaped, with both ends embedded in the corresponding longitudinal wall. All wire rope sleeves are collinear with the sleeve holes enclosed by the longitudinal wall in the vertical direction and are also collinear with the stirrup holes. Inserts are vertically inserted into all the stirrup holes and all the sleeve holes. This mechanism can solve the problems of complex connection node structures in existing modular concrete buildings, which affect construction efficiency, and generally have weak structural performance.

Description

Technical Field

[0001] This utility model relates to the field of precast concrete technology, specifically to a precast concrete wall connection mechanism and modular integrated building. Background Technology

[0002] Modular construction is an upgrade of prefabricated technology. Common modular buildings integrate the entire system of structure, electromechanical, and decoration in a factory to form standardized modular units.

[0003] Compared to traditional buildings, modular buildings rely on the nodes between modules to transmit vertical and horizontal forces. The nodes of modular buildings largely determine the safety, reliability, and overall performance of the entire building structure, making them a key part of modular building research and development. Furthermore, the design of the nodes directly affects the simplicity and speed of on-site construction.

[0004] Modular buildings have a structural form and stress mechanism that are significantly different from other traditional structures. The existing concrete modules are connected by vertical grouting sleeve connection technology and grout anchor lap connection technology, while the horizontal connection is made by later cast-in-place concrete. In practical applications, there are problems such as incomplete grouting and wet on-site work affecting the environment. Moreover, the connection nodes of existing concrete modular buildings generally have problems such as weak horizontal shear resistance and insufficient consideration of seismic performance.

[0005] The current modular concrete construction model involves prefabricating a module unit in a factory, transporting it to the site, and hoisting it layer by layer. Compared with traditional cast-in-place construction, this saves a lot of labor and improves the on-site construction environment. However, the installation of the overall module unit is limited by the size of the transported units, which prevents the full realization of the advantages of modular construction.

[0006] Therefore, this application is hereby submitted. Utility Model Content

[0007] The purpose of this utility model is to provide a precast concrete wall connection mechanism that can solve the problems of complex connection node structures in existing modular concrete buildings, which affect construction efficiency and generally have weak structural performance.

[0008] This utility model is achieved through the following technical solution:

[0009] A precast concrete wall connection mechanism includes: two longitudinal walls and one transverse wall. The two longitudinal walls are coplanar and spaced apart to form a connection gap between them. The transverse wall is perpendicular to the longitudinal walls and aligned with the connection gap, so that the two longitudinal walls and the transverse wall are arranged in a T-shape. Multiple stirrups are U-shaped, with both ends of each stirrup pre-embedded in the transverse wall so that the middle of each stirrup is located within the connection gap. All stirrups are connected to the transverse wall. The hoop holes enclosing the transverse wall are arranged collinearly along the vertical direction; two sets of wire rope sleeves, each corresponding to one of the two longitudinal walls, are U-shaped, with both ends of the wire rope sleeve pre-embedded in the corresponding longitudinal wall so that the middle of the wire rope sleeve is located within the connecting gap. All the wire rope sleeves and the sleeve holes enclosing the longitudinal wall are arranged collinearly along the vertical direction and collinearly with the hoop holes; reinforcing bars are inserted vertically into all the hoop holes and all the sleeve holes.

[0010] In another preferred embodiment, the diameter of the hoop hole is slightly larger than the diameter of the insert bar, and the wire rope sleeve is tightened and fitted onto the insert bar.

[0011] In another preferred embodiment, the thickness of the transverse wall matches the width of the connection gap, so that the sidewall of the transverse wall facing the connection gap and the connection gap enclose an U-shaped post-cast area.

[0012] In another preferred embodiment, a mortise is excavated in the middle of the side wall of the longitudinal wall facing the connecting gap. The mortise is a trapezoidal groove that extends vertically through the longitudinal wall.

[0013] In another preferred embodiment, both the longitudinal wall and the transverse wall have multiple channels, which are opened vertically and have their ends penetrating the longitudinal wall or the transverse wall, respectively.

[0014] In another preferred embodiment, the wall of the channel is corrugated; a sleeve is coaxially embedded in a plurality of the channels, and the sleeve has internal threads.

[0015] In another preferred embodiment, at least one of the channels is provided at the corners of both the longitudinal wall and the transverse wall near the connecting gap.

[0016] A modular integrated building includes: multiple precast concrete wall connection mechanisms as described above, used to enclose multiple rectangular frame-shaped building units, wherein each building unit has two longitudinal walls and two transverse walls on its four side walls, and all building units are arranged in a layered array; multiple floor slabs, the shape of which matches the rectangle enclosed by the building units, each floor slab corresponding to a building unit and covering the top of the corresponding building unit, each floor slab having multiple through holes along its thickness direction, each through hole corresponding to a channel in the corresponding building unit; and multiple steel strands, each steel strand corresponding to a channel in each layer of building units and vertically inserted into the corresponding channel, and extending vertically through the corresponding channel in each layer of building units.

[0017] In another preferred embodiment, the edges of the floor slab are set in a sawtooth shape, and the sawtooth of any two adjacent floor slabs can be tightly spliced ​​together.

[0018] In another preferred embodiment, a plurality of bolts are also included, each bolt corresponding to a sleeve, and the bolts pass through the corresponding through holes and are screwed onto the corresponding sleeves.

[0019] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0020] This utility model provides a precast concrete wall connection mechanism. By setting two longitudinal walls and one transverse wall, and defining their positional relationship, a T-shaped structure is formed. This provides a stable right-angled foundation for the subsequent construction of a rectangular modular structure. A connection gap is reserved between the three walls to provide space for subsequent fixing. Furthermore, multiple U-shaped stirrups are installed, with both ends embedded in the transverse wall to close the stirrups and form closed hoop holes. Similarly, two sets of wire rope loops are installed, corresponding to the two longitudinal walls, with both ends of the wire rope loops pre-embedded in the corresponding longitudinal walls to ensure... The wire rope loop is closed, forming a closed loop hole, and both the wire rope loop and the stirrups are located within the connection gap. Based on this, by setting dowel bars, which are inserted vertically into all the stirrup holes and all the loop holes, all the stirrups and wire rope loops are connected into one unit by a single dowel bar, thereby connecting two longitudinal walls and one transverse wall into one unit. Subsequently, only concrete needs to be poured in the connection gap to completely fix the connection. Through the cooperation of the above features, this precast concrete wall connection mechanism can effectively solve the problems of complex connection node structures in existing modular concrete buildings, which affect construction efficiency and generally have weak structural performance. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 A schematic diagram of the precast concrete wall connection mechanism provided in an embodiment of this utility model;

[0023] Figure 2 A top view of the precast concrete wall connection mechanism provided in an embodiment of this utility model;

[0024] Figure 3 A schematic diagram of the building unit of the modular integrated building provided in the embodiment of this utility model;

[0025] Figure 4 A schematic diagram of the horizontally assembled building components of a modular integrated building provided in an embodiment of this utility model;

[0026] Figure 5 for Figure 4 A magnified view of a portion at point A;

[0027] Figure 6 A schematic diagram showing the overall assembly of the modular integrated building components provided in this embodiment of the utility model;

[0028] Figure 7 A schematic diagram showing the installation of steel strands when the building units of the modular integrated building provided in this embodiment of the utility model are spliced ​​together;

[0029] Figure 8 for Figure 7 A magnified view of a portion of point B.

[0030] The attached diagram shows the markings and corresponding component names:

[0031] 10-Longitudinal wall; 101-Mortock; 11-Transverse wall; 12-Connecting gap; 13-Diameter; 14-Floor slab; 141-Through hole; 20-Stirrup; 30-Wire rope loop; 40-Dowel bar; 50-Steel strand. Detailed Implementation

[0032] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "back", "horizontal", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] It should be noted that the terms "horizontal" and "vertical" in this utility model are used to describe approximate positional relationships, and not strictly "horizontal plane" or "vertical plane".

[0035] Example

[0036] Please refer to Figure 1 and Figure 2 This embodiment provides a precast concrete wall connection mechanism, including two longitudinal walls 10 and one transverse wall 11. The two longitudinal walls 10 are coplanarly spaced to form a connection gap 12 between them. The transverse wall 11 is perpendicular to the longitudinal walls 10 and aligned with the connection gap 12, so that the two longitudinal walls 10 and the transverse wall 11 are arranged in a T-shape. Secondly, it includes a plurality of stirrups 20, each stirrup 20 being U-shaped. Both ends of each stirrup 20 are pre-embedded in the transverse wall 11, so that the middle of each stirrup 20 is located within the connection gap 12. All the stirrups... The reinforcing bar 20 and the hoop hole enclosed by the transverse wall 11 are arranged collinearly in the vertical direction; the third includes two sets of wire rope sleeves 30, each set corresponding to one of the two longitudinal walls 10. The wire rope sleeves 30 are U-shaped, and both ends of the wire rope sleeves 30 are pre-embedded in the corresponding longitudinal wall 10 so that the middle part of the wire rope sleeves 30 is located in the connecting gap 12. All the wire rope sleeves 30 and the sleeve holes enclosed by the longitudinal wall 10 are arranged collinearly in the vertical direction and collinearly with the hoop hole; the fourth includes inserting reinforcing bars 40, which are vertically inserted into all the hoop holes and all the sleeve holes.

[0037] This utility model provides a precast concrete wall connection mechanism. By setting two longitudinal walls 10 and one transverse wall 11, and defining their positional relationship, a T-shaped structure is formed. This provides a stable right-angled foundation for the subsequent construction of a rectangular modular structure. A connection gap 12 is reserved between the three components to provide space for subsequent fixed connections. Furthermore, multiple U-shaped stirrups 20 are installed, with both ends embedded in the transverse wall 11 to close the stirrups 20, forming closed hoop holes 20. Similarly, two sets of wire rope loops 30 are installed, corresponding to the two longitudinal walls 10, with both ends of the wire rope loops 30 pre-embedded in the corresponding longitudinal wall 10, to ensure... The wire rope sleeve 30 is closed, forming a closed sleeve hole. Both the wire rope sleeve 30 and the stirrup 20 are located within the connection gap 12. Based on this, by setting the insert 40, it is inserted vertically into all the stirrup holes and all the sleeve holes. Thus, all the stirrups 20 and the wire rope sleeve 30 are connected into one unit by a single insert 40, thereby connecting the two longitudinal walls 10 and one transverse wall 11 into one unit. Subsequently, only concrete needs to be poured in the connection gap 12 to completely fix the connection. Through the cooperation of the above features, this precast concrete wall connection mechanism can effectively solve the problems of complex connection node structures in existing modular concrete buildings, which affect construction efficiency and generally have weak structural performance.

[0038] It should be noted that, in order to improve the tightness of the connection, the diameter of the hoop hole is slightly larger than the diameter of the insert 40, and the wire rope sleeve 30 is tightened and fitted with the insert 40.

[0039] To facilitate improved structural stability and the subsequent pouring of concrete within the connection gap 12, the thickness of the transverse wall 11 is matched with the width of the connection gap 12, so that the sidewall of the transverse wall 11 facing the connection gap 12 and the connection gap 12 enclose a U-shaped post-pour area.

[0040] In order to ensure that the post-cast concrete in the connection gap 12 is properly secured within the connection gap 12 to further improve the connection performance, a mortise 101 is excavated in the middle of the side wall of the longitudinal wall 10 facing the connection gap 12. The mortise 101 is a trapezoidal groove and extends vertically through the longitudinal wall 10.

[0041] In order to be fixedly connected to the ground or built in layers, both the longitudinal wall 10 and the transverse wall 11 have multiple holes 13. The holes 13 are opened in the vertical direction, and the two ends of the holes 13 respectively pass through the longitudinal wall 10 or the transverse wall 11.

[0042] With the above settings, the longitudinal wall 10 and the transverse wall 11 can be fixed by inserting them into the longitudinal steel bars pre-embedded in the ground through the channel 13, or by fastening the layered structure by passing steel strands through the channel 13. The bottom end of the steel strand is fixed to the ground, and then the steel strand is pulled longitudinally to fasten the layered structure.

[0043] To further improve the longitudinal connection performance, the wall of the channel 13 is corrugated; a sleeve is coaxially embedded in several of the channels 13, and the sleeve has internal threads.

[0044] With the above setup, after the longitudinal construction is completed, steel strands are passed through the channel 13 for pre-tightening, and then concrete is poured into the channel 13. The solidified concrete is then longitudinally limited by the structure at the corrugated pipe to improve the tightness of the longitudinal connection.

[0045] Preferably, in order to accurately locate the part near the connection gap 12, at least one channel 13 is provided at the corner of the longitudinal wall 10 and the transverse wall 11 near the connection gap 12.

[0046] Please Figure 1 and Figure 2 Based on this, further refer to Figures 3 to 8 This embodiment also provides a modular integrated building, including: a plurality of precast concrete wall connection mechanisms of any of the above-mentioned types, to enclose and form a plurality of rectangular frame-shaped building units, wherein the four side walls of the building units are two of the longitudinal walls 10 and two of the transverse walls 11, and all the building units are arranged in a layered array; secondly, it includes a plurality of floor slabs 14, the shape of which matches the rectangle enclosed by the building units, the floor slabs 14 correspond one-to-one with the building units, and are placed on the top of the corresponding building units, the floor slabs 14 having a plurality of through holes 141 through the thickness direction, the through holes 141 corresponding one-to-one with the holes 13 of the corresponding building units; thirdly, it includes a plurality of steel strands 50, the steel strands 50 corresponding one-to-one with the holes 13 of each layer of building units, and are vertically inserted into the corresponding holes 13, and penetrate the holes 13 of each layer of building units in the vertical direction.

[0047] Through the above setup, a rectangular frame-shaped building unit is constructed using the precast concrete wall connection mechanism. Then, a floor slab 14 is installed on the top of the building unit to form a five-sided structure. Then, multiple building units are horizontally spliced ​​to form a layered structure. Then, the modular integrated building with the layered structure is constructed layer by layer. Finally, it is longitudinally fastened by steel strands 50.

[0048] In order to limit the adjacent floor slabs 14 of the layered structure and further improve the structural performance, the edges of the floor slabs 14 are set in a sawtooth shape, and the sawtooth of any two adjacent floor slabs 14 can be tightly spliced ​​together.

[0049] By implementing the above settings, the friction between floor slabs 14 is increased, thereby improving the overall building's resistance to horizontal forces.

[0050] In order to further fix and position the floor slab 14 to the corresponding longitudinal wall 10 and transverse wall 11, the above-mentioned modular integrated building also includes multiple bolts, each of which corresponds to a sleeve. The bolts pass through the corresponding through holes 141 and are screwed to the corresponding sleeves.

[0051] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A precast concrete wall connecting mechanism, characterized by, include: Two longitudinal walls (10) and one transverse wall (11) are arranged coplanarly and spaced apart to form a connecting gap (12) between the two longitudinal walls (10). The transverse wall (11) is arranged perpendicular to the longitudinal walls (10) and aligned with the connecting gap (12) so that the two longitudinal walls (10) and the transverse wall (11) are arranged in a T-shape. Multiple stirrups (20) are U-shaped, and both ends of the stirrups (20) are embedded in the transverse wall (11) so that the middle part of the stirrups (20) is located in the connection gap (12). All the stirrups (20) and the hoop holes enclosed by the transverse wall (11) are arranged collinearly in the vertical direction. Two sets of wire rope sleeves (30) are respectively corresponding to two longitudinal walls (10). The wire rope sleeves (30) are U-shaped. Both ends of the wire rope sleeves (30) are pre-embedded in the corresponding longitudinal walls (10) so that the middle part of the wire rope sleeves (30) is located in the connection gap (12). All the wire rope sleeves (30) and the sleeve holes enclosed by the longitudinal walls (10) are arranged collinearly in the vertical direction and collinearly with the hoop holes. Insertion bar (40), the insertion bar (40) is vertically inserted into all the hoop holes and all the sleeve holes.

2. A precast concrete wall connecting mechanism according to claim 1, characterised in that, The diameter of the hoop hole is slightly larger than the diameter of the insert (40), and the wire rope sleeve (30) is tightened and sleeved with the insert (40).

3. The precast concrete wall connection mechanism according to claim 1, characterized in that, The thickness of the transverse wall (11) matches the width of the connection gap (12) so that the sidewall of the transverse wall (11) facing the connection gap (12) and the connection gap (12) enclose a U-shaped post-cast area.

4. The precast concrete wall connection mechanism according to claim 3, characterized in that, A mortise (101) is excavated in the middle of the side wall of the longitudinal wall (10) facing the connecting gap (12). The mortise (101) is a trapezoidal groove and the mortise (101) penetrates the longitudinal wall (10) in the vertical direction.

5. The precast concrete wall connection mechanism according to any one of claims 1-4, characterized in that, Both the longitudinal wall (10) and the transverse wall (11) have multiple channels (13). The channels (13) are opened in the vertical direction, and the two ends of the channels (13) respectively pass through the longitudinal wall (10) or the transverse wall (11).

6. The precast concrete wall connection mechanism according to claim 5, characterized in that, The wall of the channel (13) is corrugated; A sleeve is coaxially embedded in several of the holes (13), and the sleeve has an internal thread.

7. The precast concrete wall connection mechanism according to claim 6, characterized in that, At least one channel (13) is provided at the corner of the longitudinal wall (10) and the transverse wall (11) near the connecting gap (12).

8. A modular integrated building, characterized in that, include: Multiple precast concrete wall connection mechanisms as described in any one of claims 5 or 7 are used to enclose and form multiple rectangular frame-shaped building units, wherein the four side walls of the building unit are two of the longitudinal walls (10) and two of the transverse walls (11), and all the building units are arranged in a layered array. Multiple floor slabs (14) are provided, the shape of which matches the rectangle enclosed by the building unit. Each floor slab (14) corresponds to one of the building units and is placed on the top of the corresponding building unit. Each floor slab (14) has multiple through holes (141) through it along the thickness direction. Each through hole (141) corresponds to one of the channels (13) of the corresponding building unit. Multiple steel strands (50) are provided, each corresponding to a channel (13) of each layer of the building unit, and are vertically inserted into the corresponding channel (13), and pass through the corresponding channel (13) of each layer of the building unit in the vertical direction.

9. The modular integrated building according to claim 8, characterized in that, The edges of the floor slab (14) are set in a sawtooth shape, and the sawtooth of any two adjacent floor slabs (14) can be tightly spliced ​​together.

10. The modular integrated building according to claim 8, characterized in that, It also includes multiple bolts, each corresponding to a sleeve, and the bolts pass through the corresponding through holes (141) and are screwed onto the corresponding sleeves.

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