Horizontal joint dry-type connecting structure based on fabricated concrete module building
Through the design of dry connection structure and box connectors, the connection complexity and crack resistance problems of prefabricated concrete module buildings are solved, efficient module assembly and recycling are achieved, and the seismic performance and construction efficiency of the building are improved.
Patent Information
- Application Number
- CN202420699235.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-07
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-07
AI Technical Summary
The horizontal joint connection form of existing prefabricated concrete module buildings is complex, and the crack resistance of the connecting nodes is poor, making it difficult to ensure the load-bearing capacity of the connecting nodes. The module unit has a large weight, which makes transportation and lifting inconvenient, and cannot be recycled.
The dry connection structure is adopted, and the module unit is connected through the box connector and the steel bar connection sleeve. The bottom and top of the module unit are designed as detachable screw connections to avoid wet work, realize pure dry assembly, and enhance earthquake resistance.
It improves the seismic performance and integrity of the building, simplifies on-site operation, reduces construction materials and cycles, realizes reliable connection and recycling of module units, and reduces construction costs and environmental impact.
Smart Images
Figure CN222140324U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of assembled concrete buildings, and in particular relates to a horizontal seam dry-type connection structure based on assembled concrete module buildings. Background Art
[0002] In recent years, with the rapid development of prefabricated buildings in my country, prefabricated modular buildings have received widespread attention from the social groups due to their development concept of faster construction. Prefabricated modular buildings divide the entire building into independent functional module units according to the layout of each functional space of the building. The functional module units are prefabricated in the factory and assembled into the whole building on site. Compared with traditional prefabricated buildings based on a single prefabricated component level, prefabricated modular buildings have a high degree of integration, fewer on-site connection nodes, and fast on-site construction speed, which can greatly reduce the construction period. Large-scale machinery is used on-site for modular construction, which reduces the amount of labor on site and truly realizes prefabricated construction and industrialized construction. It is the ultimate form of prefabricated building development.
[0003] At present, the existing prefabricated modular buildings can be divided into prefabricated steel structure modular buildings and prefabricated concrete modular buildings according to the materials. Prefabricated steel structure modular buildings have the advantages of high bearing capacity, light weight, simple connection, etc., but the large amount of steel used leads to high cost. At the same time, there are defects in fire prevention, corrosion resistance, sound insulation, and thermal insulation. Therefore, they are currently mostly used in low-rise office buildings or emergency buildings, and are rarely used in civil residential buildings. Prefabricated concrete modular buildings use less steel, have low cost, and have good fire resistance, corrosion resistance, and thermal insulation. They are a solution suitable for high-quality modular buildings.
[0004] However, there are still many problems with the existing prefabricated concrete modular buildings in my country, such as the heavy weight of the concrete modular units, which makes transportation and hoisting inconvenient; at the same time, the horizontal seam connection forms of the existing concrete modular units include semi-grouting sleeves, grouting, concave and convex keyway splicing, etc. The connection forms are relatively complex, which makes the construction period long, the crack resistance of the modular unit connection nodes is poor, it is difficult to ensure the bearing capacity of the connection nodes, and it is impossible to truly realize the recycling of modular units. Therefore, it is urgent to provide a horizontal seam connection structure to optimize the process. Utility Model Content
[0005] In order to solve the above problems existing in the prior art, the utility model provides a horizontal seam dry connection structure based on an assembled concrete module building. The technical problem to be solved by the utility model is achieved through the following technical solutions:
[0006] In a first aspect, the present application provides a horizontal seam dry connection structure based on an assembled concrete module building, comprising:
[0007] At least two module units, the module units include side walls and a top fixedly connected to the side walls, according to the shape of the top, the side walls include a plurality of corner columns, the corner columns extend along a first direction, a first steel bar connection sleeve is provided at one end of the corner column close to the top, at least one steel box is provided at one end of the corner column away from the top, the steel box includes a recessed space, a through hole is provided on the side wall of the steel box, a second steel bar connection sleeve is provided at the contact between the steel box and the corner column, and steel bars are fixedly connected between the first steel bar connection sleeve and the second steel bar connection sleeve;
[0008] The module unit includes a first module unit and a second module unit, which are arranged along a first direction and assembled along the first direction. The bottom of the first module unit is detachably fixedly connected to the top of the second module unit by a connecting screw, the connecting screw passes through a through hole, one end of the connecting screw is detachably fixedly connected to the first steel bar connecting sleeve of the second module unit, and the other end of the connecting screw is detachably fixedly connected to the side wall of the steel box of the first module unit by a nut, so that the first module unit and the second module unit can be detachably assembled.
[0009] Optionally, anchoring steel bars are further provided at the contact point between the steel box of the module unit and the corner column, and the anchoring steel bars are located on both sides of the second steel bar connecting sleeve.
[0010] Optionally, three of the steel boxes are arranged at one end of the corner column away from the top, one of which is located at the corner column, and the other two are respectively located on both sides of the steel box at the corner column.
[0011] Optionally, the connecting screw and the side wall of the steel box are detachably fixedly connected via a nut, and a gasket is further provided between the nut and the side wall of the steel box.
[0012] Optionally, the orthographic projection of the through hole along the first direction is an ellipse.
[0013] Optionally, the recessed space of the steel box is communicated with the external space.
[0014] Optionally, the side walls of the module unit are at least partially thin-walled.
[0015] Beneficial effects of the utility model:
[0016] The utility model provides a horizontal seam dry connection structure based on an assembled concrete module building, which is assembled into a whole by assembled concrete functional module units. The functional module units are formed by integrally pouring concrete. The upper and lower module units are connected by connecting nodes to form an overall structure. The connecting nodes transmit force reliably, and a high seismic performance system can be formed in the vertical direction, and the building has good integrity. All on-site operations are carried out in the functional modules, avoiding external operations. At the same time, no wet operations are carried out on site, which is a pure dry connection.
[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a structural schematic diagram of a horizontal seam dry connection structure based on an assembled concrete module building provided by an embodiment of the utility model;
[0019] Figure 2 This is a cross-sectional view of a horizontal seam dry connection structure based on an assembled concrete module building provided by an embodiment of the utility model;
[0020] Figure 3 It is a top view of a horizontal seam dry connection structure based on an assembled concrete module building provided by an embodiment of the utility model;
[0021] Figure 4 It is another cross-sectional view of a horizontal seam dry connection structure based on an assembled concrete module building provided by an embodiment of the utility model;
[0022] Figure 5 It is another cross-sectional view of a horizontal seam dry connection structure based on an assembled concrete module building provided by an embodiment of the utility model;
[0023] Figure 6 This is a structural schematic diagram of a module unit provided by an embodiment of the utility model;
[0024] Figure 7 It is a structural schematic diagram of the anchoring steel bar provided in an embodiment of the utility model. DETAILED DESCRIPTION
[0025] The present invention is further described in detail below in conjunction with specific embodiments, but the implementation methods of the present invention are not limited thereto.
[0026] In order to overcome the shortcomings of the above-mentioned prefabricated concrete module buildings, the purpose of the present invention is to provide a prefabricated concrete module building, which is assembled into a whole by prefabricated concrete functional module units. The functional module units are formed by integrally pouring concrete. The upper and lower module units are connected by connecting nodes to form an overall structure. The connecting nodes have reliable force transmission, and a high seismic performance system can be formed in the vertical direction. The building has good integrity. All on-site operations are carried out in the functional modules, avoiding external operations. At the same time, no wet operations are carried out on site, and it is a pure dry connection.
[0027] This invention uses a new type of upper and lower module unit connection form, which adopts box-type connectors and steel bar connecting sleeves. The bottom of the module unit adopts a box-type connector, and the top corresponds to a matching steel bar connecting sleeve. The connecting steel bars are pre-buried in the steel bar connecting sleeve.
[0028] The box-type connector adopts integrated steel bar connector. The steel boxes are welded by Q235 steel plates, and the weld size is calculated according to the "Steel Structure Design Standard". The bottom plate of the steel box is set with an elliptical opening to increase the construction tolerance and facilitate the insertion of the connecting screw during construction. The steel box top plate is welded with a steel bar connection sleeve for placing the connecting steel bar. The connecting steel bar adopts HRB400 and needs to be threaded in advance to be installed in the steel bar connection sleeve; at the same time, U-shaped anchor steel bars are welded on both sides of the steel box top plate to enhance its anchoring performance.
[0029] See also Figure 1 to Figure 5 , Figure 1 This is a structural schematic diagram of a horizontal seam dry connection structure based on an assembled concrete module building provided by an embodiment of the utility model. Figure 2 This is a cross-sectional view of a horizontal seam dry connection structure based on an assembled concrete module building provided by an embodiment of the utility model. Figure 3 This is a top view of a horizontal seam dry connection structure based on an assembled concrete module building provided by an embodiment of the utility model. Figure 4 This is another cross-sectional view of a horizontal seam dry connection structure based on an assembled concrete module building provided by an embodiment of the utility model. Figure 5 1 is another cross-sectional view of a horizontal seam dry connection structure based on an assembled concrete module building provided by an embodiment of the utility model. The horizontal seam dry connection structure based on an assembled concrete module building provided by the utility model includes:
[0030] At least two module units 1, the module unit 1 includes a side wall 24 and a top 23 fixedly connected to the side wall 24. According to the shape of the top 23, the side wall 24 includes a plurality of corner columns 25, the corner columns 25 extend along a first direction, and a first steel bar connecting sleeve 43-1 is provided at one end of the corner column 25 close to the top 23, and at least one steel box 41 is provided at one end of the corner column 25 away from the top 23. The steel box 41 includes a recessed space, and a through hole 45 is provided on the side wall 24 of the steel box 41. A second steel bar connecting sleeve 43-2 is provided at the contact between the steel box 41 and the corner column 25, and a steel bar 48 is fixedly connected between the first steel bar connecting sleeve 43-1 and the second steel bar connecting sleeve 43-2.
[0031] The module unit 1 includes a first module unit 11 and a second module unit 12, the first module unit 11 and the second module unit 12 are arranged along a first direction and assembled along the first direction, the bottom of the first module unit 11 and the top 23 of the second module unit 12 are detachably fixedly connected through a connecting screw 44, the connecting screw 44 passes through a through hole 45, one end of the connecting screw 44 is detachably fixedly connected to a first steel bar connecting sleeve 43-1 of the second module unit 12, and the other end of the connecting screw 44 is detachably fixedly connected to a side wall 24 of a steel box 41 of the first module unit 11 through a nut 47, so that the first module unit 11 and the second module unit 12 are detachably assembled, and the first module unit 11 and the second module unit 12 are connected through a node 31; wherein,
[0032] Optionally, the first direction is a side wall height direction.
[0033] For more details, please see Figure 1 to Figure 5 The present invention provides a horizontal seam dry connection structure based on an assembled concrete module building, which is used to assemble a module unit 1, which can also be understood as assembling a first module unit 11 and a second module unit 12 arranged along a first direction together, using a box-type connector 4 and a steel bar connection sleeve 43. The connection has reliable force transmission, and a high seismic performance system can be formed in the vertical direction. The building has good integrity, and all on-site operations are carried out in the functional module to avoid external operations. At the same time, no wet operations are performed on site, which is a pure dry connection.
[0034] Specifically, the first module unit 11 and the second module unit 12 are assembled by integrally pouring concrete; wherein the module unit 1 includes a side wall 24 and a top 23, the side wall 24 forms a closed-loop structure, the top 23 is fixed on one side of the side wall 24, and the other side of the side wall 24 has no structure, so that the module unit 1 forms a semi-closed structure; optionally, the shape of the top 23 corresponds to the projection of the annular structure formed by the side wall 24 along the first direction, and the projection of the annular structure formed by the side wall 24 along the first direction can be a polygon, at least a quadrilateral, and A corner column 25 is provided at the corner of the side wall 24. The corner column 25 can improve the strength of the side wall 24. The corner column 25 extends in a first direction, that is, in a vertical direction. At least one first steel bar connecting sleeve 43-1 is provided at one end of the corner column 25 close to the top 23. At least one steel box 41 is provided at one end of the corner column 25 away from the top 23. A second steel bar connecting sleeve 43-2 is provided at the connection between each steel box 41 and the corner column 25. The first steel bar connecting sleeve 43-1 and the second steel bar connecting sleeve 43-2 are fixedly connected by a fixed connecting steel bar 48. Then, optionally, the connecting steel bar 48 is pre-buried between the first steel bar connecting sleeve 43-1 and the second steel bar connecting sleeve 43-2. Optionally, the connecting steel bar 48 adopts HRB400 and needs to be threaded in advance to be installed in the steel bar connecting sleeve 43. The use of the pre-buried steel bar connecting sleeve 43 can avoid the deformation and damage of the steel bar during the lifting process caused by the exposed steel bar and the influence of the uncertainty of the construction lifting environment; the steel box 41 includes a recessed space, and the side wall 24 of the steel box 41 includes a through hole 45. The connecting screw 44 is passed through the through hole 45, and then the nut is used to tighten the screw. 47 fixes the connecting screw 44 to the side wall 24 of the steel box 41, and the other end of the connecting screw 44 is fixedly connected to the first steel bar connecting sleeve 43-1 of the second module unit 12, so as to realize the detachable fixed connection between the first module unit 11 and the second module unit 12; in this way, the box-type connector 4 has better shear resistance, and the shear force and tension exerted on the module unit 1 can be better transmitted through the box-type connector 4, meeting the "strong connection" seismic design concept of the prefabricated structure, meeting the acceptance requirements of the structure, and improving the assembly efficiency of the module unit 1.
[0035] During the on-site operation, after the box connector 4 of the upper module unit 1 is aligned with the steel bar connection sleeve 43 of the lower module unit 1, the upper module unit 1 is lowered. After the upper and lower module units 1 are placed correspondingly, the connecting screw 44 is passed through the through hole 45 of the steel box 41 of the upper module unit 1, inserted into the steel bar connection sleeve 43 of the lower module unit 1, and the gasket 46 is placed. The nut 47 is tightened to achieve the connection between the upper and lower module units 1. The steel bar connection sleeve 43 is set at the module unit 1 to avoid deformation and damage of the steel bars during the lifting process caused by the exposed steel bars and the influence of the uncertainty of the construction hoisting environment. At the same time, this connection form can realize dry connection, and no wet operation is required during the on-site construction. Under the premise of ensuring the connection strength, a pure dry connection process is adopted to reduce construction materials and avoid wet operation on site. It is low-carbon and energy-saving while effectively improving construction efficiency.
[0036] Please note that, see Figure 6 , Figure 6 It is a structural schematic diagram of a module unit 1 provided in an embodiment of the utility model. The module unit 1 includes side walls 24 and a top 23. The side walls 24 surround an independent functional space. The module unit 1 is formed by integrally casting C40 concrete in a factory. At least one of doors and windows, electromechanical pipelines, interior decoration or fixed furniture can be integrated on the inner side of the side walls 24 and the top 23. Door openings 21 and window openings 22 are reserved on the side walls 24, and top side beams are provided on the tops 23 of the door openings 21 and the window openings 22.
[0037] It should be noted that Figure 1 The illustrated embodiment only schematically shows the assembly diagram between the first module unit 11 and the second module unit 12, and does not represent their actual dimensions; Figure 2 The illustrated embodiment only schematically shows a cross-sectional view of the assembly of the first module unit 11 and the second module unit 12, and does not represent their actual size; Figure 3 The illustrated embodiment only schematically shows the position of the corner column 25 and does not represent its actual size; Figure 4 The illustrated embodiment only illustrates the position and quantity of the steel boxes 41. In the actual manufacturing process, other arrangements may be provided. Figure 5 The illustrated embodiment merely illustrates another schematic diagram of the assembly cross section of the first module unit 11 and the second module unit 12 and does not represent the actual size thereof.
[0038] In an optional embodiment of the present invention, see Figure 7 , Figure 7 It is a structural schematic diagram of the anchoring steel bar 42 provided in an embodiment of the utility model. Anchoring steel bars 42 are also provided at the contact point between the steel box 41 of the module unit 1 and the corner column 25. The anchoring steel bars 42 are located on both sides of the second steel bar connecting sleeve 43.
[0039] Specifically, see Figure 7 Anchoring steel bars 42 are welded on both sides of the second steel bar connecting sleeve 43-2. The anchoring steel bars 42 are U-shaped, which can enhance the anchoring performance.
[0040] It should be noted that Figure 7 The illustrated embodiment only schematically shows the position and shape of the anchoring steel bar 42 and does not represent its actual size.
[0041] In an optional embodiment of the present invention, three steel boxes 41 are provided at one end of the corner column 25 away from the top 23 , one of which is located at the corner column 25 , and the other two are respectively located on both sides of the steel box 41 at the corner column 25 .
[0042] Specifically, in this embodiment, the first module unit 11 and the second module unit 12 are assembled through a plurality of box-type connectors 4, which can ensure assembly reliability; optionally, the number of steel boxes 41 is selected according to actual needs.
[0043] It should be noted that the embedded box-type connectors 4, i.e., the steel boxes 41, are all arranged inside the side walls of the concrete module unit 1, so that on-site construction is carried out indoors, avoiding the construction of scaffolding. The construction is not restricted by the site and can be applied in multiple occasions, making the operation safe, simple and fast.
[0044] In an optional embodiment of the present invention, the connecting screw 44 is detachably fixedly connected to the side wall 24 of the steel box 41 via a nut 47 , and a gasket 46 is further provided between the nut 47 and the side wall 24 of the steel box 41 .
[0045] In an optional embodiment of the present invention, the orthographic projection of the through hole 45 along the first direction is an ellipse, which can increase the construction tolerance and facilitate the insertion and removal of the connecting screw 44 during the construction process.
[0046] In an optional embodiment of the present invention, the recessed space of the steel box 41 is connected to the external space to enable the connecting screw 44 to be inserted and removed.
[0047] In an optional embodiment of the present invention, at least part of the side wall 24 of the module unit 1 is a thin wall 242 .
[0048] Specifically, in this embodiment, at least part of the side wall 24 is a thin wall 242, and at least part of the side wall 241 is a common side wall. Figure 4 As shown, the side wall 24 is recessed inward to form a thin wall 242 , which can effectively reduce the deadweight of the module unit 1 and facilitate the transportation and hoisting of the concrete module unit 1 .
[0049] It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the term "include", "comprise" or any other variant is intended to cover non-exclusive inclusion, so that the article or device including a series of elements includes not only those elements, but also other elements that are not explicitly listed. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the article or device including the elements. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The orientation or position relationship indicated by "up", "down", "left", "right", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the utility model.
[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.
[0051] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.
Claims
1. A horizontal seam dry connection structure based on an assembled concrete module building, characterized in that: include: At least two module units, the module unit includes a side wall and a top fixedly connected to the side wall, according to the shape of the top, the side wall includes a plurality of corner columns, the corner columns extend along a first direction, at least one first steel bar connection sleeve is provided at one end of the corner column close to the top, at least one steel box is provided at one end of the corner column away from the top, the steel box includes a recessed space, the side wall of the steel box is provided with a through hole, a second steel bar connection sleeve is provided at the contact between the steel box and the corner column, and steel bars are fixedly connected between the first steel bar connection sleeve and the second steel bar connection sleeve; The module unit includes a first module unit and a second module unit, the first module unit and the second module unit are arranged along a first direction and assembled along the first direction, the bottom of the first module unit and the top of the second module unit are detachably fixedly connected by a connecting screw, the connecting screw passes through the through hole, one end of the connecting screw is detachably fixedly connected to the first steel bar connecting sleeve of the second module unit, and the other end of the connecting screw is detachably fixedly connected to the side wall of the steel box of the first module unit by a nut, so that the first module unit and the second module unit can be detachably assembled.
2. The horizontal seam dry connection structure based on the assembled concrete module building according to claim 1 is characterized in that: Anchor steel bars are also provided at the contact point between the steel box of the module unit and the corner column, and the anchor steel bars are located on both sides of the second steel bar connecting sleeve.
3. The horizontal seam dry connection structure based on the assembled concrete module building according to claim 1 is characterized in that: Three steel boxes are arranged at one end of the corner column away from the top, one of which is located at the corner column, and the other two are respectively located at both sides of the steel box at the corner column.
4. The horizontal seam dry connection structure based on the assembled concrete module building according to claim 1 is characterized in that: The connecting screw rod and the side wall of the steel box are detachably fixedly connected via the nut, and a gasket is further provided between the nut and the side wall of the steel box.
5. The horizontal seam dry connection structure based on the assembled concrete module building according to claim 1 is characterized in that: The orthographic projection of the through hole along the first direction is an ellipse.
6. The horizontal seam dry connection structure based on the assembled concrete module building according to claim 1 is characterized in that: The recessed space of the steel box is communicated with the external space.
7. The horizontal seam dry connection structure based on the assembled concrete module building according to claim 1 is characterized in that: The side walls of the module unit are at least partially thin-walled.