Building structure based on prefabricated walls
By embedding steel cages at the corners of precast walls and pouring concrete, the problem of insufficient corner connection strength in precast shear walls was solved, achieving integration of structure and decoration, avoiding secondary renovation, and improving the durability and stability of the connection.
Patent Information
- Application Number
- CN202522593316.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-08
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-12-08
AI Technical Summary
The existing precast shear walls have insufficient connection strength at corner positions, and secondary renovation is required to ensure the stability of the structure and decoration.
The first and second precast walls are angled to each other to form a corner, with their inner surfaces joined together. A corner-covering decorative structure covers the outer side. A steel cage is placed in the corner space and connected to the reserved steel bars. Concrete is poured in the corner space to form a reinforced concrete structural column.
It improves the structural strength at corner locations, integrates structure and decoration, avoids secondary renovations, and makes external decorative materials less prone to falling off, resulting in better durability.
Smart Images
Figure CN223781017U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of building structure technology, and in particular to a building structure based on prefabricated walls. Background Technology
[0002] Precast shear walls are manufactured in a standardized manner in a factory and then transported to the site for assembly. The core and challenge of precast construction lies in "connection." The safety and integrity of precast shear walls depend entirely on the reliability of the connections between components. Especially at corners, where the precast shear walls on both sides form a transition, the current main method of connection is steel reinforcement binding. However, steel reinforcement binding has low structural strength, and secondary finishing is required at the corners. Utility Model Content
[0003] The technical problem to be solved by this application is to propose a building structure based on prefabricated walls, which addresses the above-mentioned shortcomings of the existing technology.
[0004] A building structure based on prefabricated walls, the building structure based on prefabricated walls includes a first prefabricated wall and a second prefabricated wall, a steel cage, and a corner decoration structure;
[0005] The first prefabricated wall and the second prefabricated wall are at an angle to each other and form a corner at the joint position; on the inside of the corner, the inner surface of the first prefabricated wall and the inner surface of the second prefabricated wall are joined together;
[0006] The corner-covering decorative structure covers the outside of the corner, and the two sides of the corner-covering decorative structure are respectively attached to the outer surface of the first prefabricated wall and the outer surface of the second prefabricated wall;
[0007] The corner-enclosing decorative structure, together with the end faces of the first precast wall and the second precast wall, forms a corner space; the steel cage is placed in the corner space and connected to the reserved steel bars of the first precast wall and the second precast wall; concrete is poured in the corner space to form a reinforced concrete structural column.
[0008] Optionally, both the first precast wall and the second precast wall include a first type of reserved steel bar and a second type of reserved steel bar; wherein, the first type of reserved steel bar of the first precast wall and the second precast wall are connected to the steel cage; the second type of reserved steel bar of the first precast wall and the second type of reserved steel bar of the second precast wall are both inserted into the interior of the steel cage and connected to each other inside the steel cage.
[0009] Optionally, the first type of reserved reinforcing bars of the first precast wall and the second precast wall are welded together with the reinforcing cage;
[0010] The second type of reserved steel bars of the first precast wall and the second type of reserved steel bars of the second precast wall are welded together.
[0011] Optionally, the corner trim structure includes a first side and a second side, the first side and the second side forming an L-shaped structure; the first side is attached to the outer surface of the first precast wall; the second side is attached to the outer surface of the second precast wall.
[0012] Optionally, the first precast wall and the second precast wall are perpendicular to each other.
[0013] Optionally, the corner trim structure is configured as an arc-shaped structure.
[0014] Optionally, the concrete poured in the corner space is self-compacting concrete.
[0015] Optionally, both the first precast wall and the second precast wall are shear walls.
[0016] Optionally, the first type of reserved reinforcing steel in the first precast wall and the second precast wall is precision-rolled threaded steel.
[0017] In this application, the first and second precast walls are factory-fabricated. At the construction site, the first and second precast walls form an angle with each other and a corner at their joint. On the inner side of the corner, the inner surfaces of the first and second precast walls are joined. A corner-enclosing decorative structure, together with the end faces of the first and second precast walls, encloses the corner space. A reinforcing cage is placed within the corner space and connected to the pre-reserved reinforcing bars of the first and second precast walls. Concrete is poured into the corner space to form a reinforced concrete structural column. In the building structure provided by this application, the connection at the corner between the first and second precast walls has good structural strength; the structural connection and decoration are integrally formed, eliminating the need for secondary finishing at the corner; the reinforced concrete structure and decorative materials are integrated, making the external decorative materials less prone to detachment and improving durability.
[0018] In some technical solutions, both the first and second precast walls include first-type and second-type reserved reinforcing bars; wherein, the first-type reserved reinforcing bars of both the first and second precast walls are connected to the reinforcing cage; and the second-type reserved reinforcing bars of both the first and second precast walls are inserted into the interior of the reinforcing cage and interconnected within the cage. This design can increase the shear strength at the connection point between the first and second precast walls. Attached Figure Description
[0019] Figure 1This is a schematic diagram of a building structure based on prefabricated walls in an embodiment of this application.
[0020] Figure 2 yes Figure 1 A sectional view along direction A.
[0021] Reference numerals: First precast wall 10a, Second precast wall 10b, First type of reserved steel bar 11a, Second type of reserved steel bar 11b, Inner surface 12, Outer surface 13, Steel cage 20, Corner decorative structure 30, Corner space 40, Reinforced concrete structural column 50. Detailed Implementation
[0022] The following are specific embodiments of this application, described in conjunction with the accompanying drawings, to further illustrate the technical solutions of this application. However, this application is not limited to these embodiments. In the following description, specific details such as particular configurations and components are provided merely to aid in a comprehensive understanding of the embodiments of this application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope of protection of this application. Furthermore, for clarity and brevity, descriptions of known functions and structures have been omitted.
[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.
[0024] This application provides a building structure based on prefabricated walls to optimize the connection between prefabricated walls. In the building structure provided by this application, the connection at the corner between the first and second prefabricated walls has good structural strength. The structural connection and decoration are integrally formed, and no secondary decoration is required at the corner. The reinforced concrete structure and decorative materials are integrated, and the external decorative materials are not easy to fall off, resulting in better durability.
[0025] It's important to clarify that precast walls specifically refer to precast shear walls. Precast shear walls are manufactured in a standardized manner in a factory and then transported to the site for assembly and connection. Unlike the traditional "cast-in-place" method of erecting formwork, tying reinforcing bars, and pouring concrete on-site, precast shear walls are mass-produced in specialized factories under strict quality control. In some designs, the exterior wall finishes (such as facing bricks, paint base layers, stone, etc.) are pre-finished in the factory, eliminating the need for on-site scaffolding for exterior decoration. Therefore, only the decoration at the connection points needs to be considered during connection.
[0026] refer to Figure 1 and Figure 2 The building structure based on prefabricated walls includes a first prefabricated wall 10a and a second prefabricated wall 10b, a steel cage 20, and a corner decorative structure 30.
[0027] The first precast wall 10a and the second precast wall 10b are at an angle to each other and form a corner at the joint position; on the inside of the corner, the inner surface of the first precast wall 10a and the inner surface of the second precast wall 10b are joined together.
[0028] The corner trim structure 30 covers the outer side of the corner, and the two sides of the corner trim structure 30 are respectively attached to the outer surface of the first precast wall 10a and the outer surface of the second precast wall 10b.
[0029] The corner decorative structure 30, together with the end face of the first precast wall 10a and the end face of the second precast wall 10b, forms a corner space 40; the steel cage 20 is placed in the corner space 40 and connected to the reserved steel bars of the first precast wall 10a and the second precast wall 10b; concrete is poured in the corner space 40 to form a reinforced concrete structural column 50.
[0030] In one embodiment of this application, both the first precast wall 10a and the second precast wall 10b include first-type reserved reinforcing bars 11a and second-type reserved reinforcing bars 11b. The first-type reserved reinforcing bars 11a of both the first and second precast wall 10a are connected to the reinforcing cage 20. The second-type reserved reinforcing bars 11b of both the first and second precast wall 10a are inserted into the interior of the reinforcing cage 20 and interconnected within the cage. Further, the first-type reserved reinforcing bars 11a of both the first and second precast wall 10a are welded to the reinforcing cage 20. The second-type reserved reinforcing bars 11b of both the first and second precast wall 10a are also welded together. Additionally, the first-type reserved reinforcing bars of both the first and second precast walls are precision-rolled threaded steel bars.
[0031] exist Figure 1 In the structure shown, the first prefabricated wall 10a and the second prefabricated wall 10b are at an angle to each other and form a corner at the joint, forming a building structure after connection. The first prefabricated wall 10a and the second prefabricated wall 10b have an inner surface 12 on the inner side of the corner and an outer surface 13 on the outer side of the corner. The first type of pre-reserved reinforcing bars 11a of the first prefabricated wall 10a and the second prefabricated wall 10b extend into the corner space 40 and connect with the reinforcing cage 20. Furthermore, the second type of pre-reserved reinforcing bars 11b of both the first prefabricated wall 10a and the second prefabricated wall 10b penetrate into the interior of the reinforcing cage 20 and are interconnected within the reinforcing cage 20.
[0032] In one embodiment of this application, both the first precast wall 10a and the second precast wall 10b are shear walls. Shear walls are the main type of wall in a building used to resist horizontal loads (such as wind loads and earthquakes), acting as the building's skeleton and ensuring that the building does not undergo excessive lateral deformation or collapse under strong winds or earthquakes. Precast shear walls are produced in factories under strictly controlled production conditions; therefore, the strength, flatness, and dimensional accuracy of the components are far superior to those produced on-site.
[0033] In one embodiment of this application, the diameter D of the reserved reinforcing bars in the first prefabricated wall 10a and the second prefabricated wall 10b is ≥15mm, which can ensure the strength of the connection.
[0034] In one embodiment of this application, the concrete poured in the corner space is self-compacting concrete, specifically 120 MPa self-compacting concrete. Self-compacting concrete, under its own weight, can flow and compact, completely filling the formwork even with dense reinforcing steel, while achieving excellent homogeneity, and requiring no additional vibration. Here, 120 MPa self-compacting concrete belongs to ultra-high-strength concrete, with significantly higher flexural and tensile strengths than ordinary concrete.
[0035] When connecting the first precast wall 10a and the second precast wall 10b on site, the first type of reserved steel bars of the first precast wall 10a and the second precast wall 10b extend into the corner space 40 and connect with the steel cage 20.
[0036] The corner trim structure 30 serves as the external decoration outside the corner and is part of the connection structure between the first precast wall 10a and the second precast wall 10b. The structural connection and decoration are integrally formed, eliminating the need for secondary finishing at the corner. The reinforced concrete structure and decorative material are integrated, making the external decorative material less prone to detachment and improving durability. In one embodiment of this application, the corner trim structure 30 includes a first side and a second side, forming an L-shaped structure. The first side is attached to the outer surface of the first precast wall 10a; the second side is attached to the outer surface of the second precast wall 10b. In a specific technical solution, the angle range between the first precast wall 10a and the second precast wall 10b is set to 60°-120°. Further, in Figure 1 In the structure shown, the first prefabricated wall 10a and the second prefabricated wall 10b are perpendicular to each other.
[0037] In one embodiment of this application, the corner trim structure 30 is configured as an arc-shaped structure, so that the outer sides of the first prefabricated wall 10a and the second prefabricated wall 10b transition with an arc-shaped surface.
[0038] After the first and second precast walls are manufactured in the factory, on-site construction is required to connect them. An illustrative construction process includes steps one through five.
[0039] Step 1: Place the first precast wall, the second precast wall, and the steel cage in predetermined positions, such that the first precast wall and the second precast wall form an angle to each other and a corner at the joint position.
[0040] Step 2: Connect the first type of reserved steel bars of the first precast wall and the second precast wall to the steel cage.
[0041] Step 3: Connect the second type of reserved steel bars of the first precast wall and the second type of reserved steel bars of the second precast wall together.
[0042] Step 4: Fit the two sides of the corner-wrapping decorative structure to the outer surfaces of the first prefabricated wall and the second prefabricated wall, respectively, so that the corner-wrapping decorative structure, the end face of the first prefabricated wall, and the end face of the second prefabricated wall together form a corner space.
[0043] Step 5: Pour concrete into the corner space to form a reinforced concrete structural column.
[0044] Through steps one through five above, the first and second precast walls can be connected into an integral structure on the construction site.
[0045] In summary, in this application, the first and second precast walls are factory-fabricated. At the construction site, the first and second precast walls form an angle with each other and a corner at their joint. On the inner side of the corner, the inner surfaces of the first and second precast walls are joined. A corner-enclosing decorative structure, together with the end faces of the first and second precast walls, encloses the corner space. A reinforcing cage is placed within the corner space and connected to the pre-reserved reinforcing bars of the first and second precast walls. Concrete is poured into the corner space to form a reinforced concrete structural column. In the building structure provided by this application, the connection at the corner between the first and second precast walls has good structural strength; the structural connection and decoration are integrated, eliminating the need for secondary finishing at the corner; the reinforced concrete structure and decorative materials are integrated, making the external decorative materials less prone to detachment and improving durability.
[0046] The building possesses the aforementioned prefabricated wall-based structural design. This structural design can be used for residential buildings, public buildings, industrial buildings, underground spaces, etc. Specifically, the structural design includes a first prefabricated wall, a second prefabricated wall, a reinforcing cage, and a corner trim structure. The first and second prefabricated walls form an angle with each other and a corner at their joint. On the inner side of the corner, the inner surfaces of the first and second prefabricated walls are joined together. The corner trim structure covers the outer side of the corner, with its two sides respectively abutting the outer surfaces of the first and second prefabricated walls. The corner trim structure, together with the end faces of the first and second prefabricated walls, encloses a corner space. The reinforcing cage is placed within the corner space and connected to the pre-reserved reinforcing bars of the first and second prefabricated walls. Concrete is poured into the corner space to form a reinforced concrete structural column.
[0047] The first and second precast walls are manufactured in a factory and then connected on-site to form a monolithic structure. The building structure provided in this application features a corner connection between the first and second precast walls with excellent structural strength. The structural connection and decoration are integrated, eliminating the need for secondary finishing at the corner. The reinforced concrete structure and decorative materials are integrated, making the external decorative materials less prone to detachment and improving durability. Buildings constructed using the above-described structure also possess the aforementioned technical effects. Explanations of the relevant technical means and effects can be found in the preceding section and will not be repeated here.
[0048] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.
[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0050] The specific embodiments described herein are merely illustrative examples of the technical solutions of this application. Those skilled in the art to which this application pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, but without departing from the scope defined by the claims of this application.
Claims
1. A building structure based on prefabricated walls, characterized in that, The building structure based on prefabricated walls includes a first prefabricated wall and a second prefabricated wall, a steel cage, and corner decorative structures; The first prefabricated wall and the second prefabricated wall are at an angle to each other and form a corner at the joint position; on the inside of the corner, the inner surface of the first prefabricated wall and the inner surface of the second prefabricated wall are joined together; The corner-covering decorative structure covers the outside of the corner, and the two sides of the corner-covering decorative structure are respectively attached to the outer surface of the first prefabricated wall and the outer surface of the second prefabricated wall; The corner-enclosing decorative structure, together with the end faces of the first precast wall and the second precast wall, forms a corner space; the steel cage is placed in the corner space and connected to the reserved steel bars of the first precast wall and the second precast wall; concrete is poured in the corner space to form a reinforced concrete structural column.
2. The building structure based on prefabricated walls according to claim 1, characterized in that, Both the first precast wall and the second precast wall include a first type of reserved steel bar and a second type of reserved steel bar; wherein, the first type of reserved steel bar of the first precast wall and the second precast wall are connected to the steel cage; the second type of reserved steel bar of the first precast wall and the second type of reserved steel bar of the second precast wall are both inserted into the interior of the steel cage and connected to each other inside the steel cage.
3. The building structure based on prefabricated walls according to claim 2, characterized in that, The first type of reserved steel bars of the first precast wall and the second precast wall are welded together with the steel cage; The second type of reserved steel bars of the first precast wall and the second type of reserved steel bars of the second precast wall are welded together.
4. The building structure based on prefabricated walls according to claim 1, characterized in that, The corner trim structure includes a first side and a second side, which together form an L-shaped structure; the first side is attached to the outer surface of the first precast wall; and the second side is attached to the outer surface of the second precast wall.
5. The building structure based on prefabricated walls according to claim 1, characterized in that, The first precast wall and the second precast wall are perpendicular to each other.
6. The building structure based on prefabricated walls according to claim 1, characterized in that, The corner trim structure is designed as an arc shape.
7. The building structure based on prefabricated walls according to claim 1, characterized in that, The concrete poured in the corner space is self-compacting concrete.
8. The building structure based on prefabricated walls according to claim 1, characterized in that, Both the first precast wall and the second precast wall are shear walls.
9. The building structure based on prefabricated walls according to claim 2, characterized in that, The first type of reserved steel bars in the first precast wall and the second precast wall are precision-rolled threaded steel bars.