Positioning structure for intersection of prefabricated structure and cast-in-place structure
By using the connection layer structure and embedded reinforced component at the junction of the prefabreated structure and the cast -in -law, combined with the enhanced layer, buffer layer and cover layer, the problem of precise positioning, deformation coordination and anti -seepage in existing technologies improved, and improved it. Building quality and safety.
Patent Information
- Application Number
- CN202420946635.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The prior art is difficult to achieve precise positioning, deformation coordination and efficient anti-seepage at the junction of prefabricated structures and cast-in-place structures, resulting in the impact of building quality and appearance aesthetics.
Adopt the connection layer structure, fix the connection in the prefabricated structure and the cast -in -law through the embedded reinforced component (U -shaped reinforcement), and fill the enhanced layer, buffer layer, and cover layer in the connection layer to ensure the accurate positioning, deformation coordination of the structure, deformation coordination And waterproof performance.
The precise positioning and deformation coordination of the prefabricated structure and the cast -in -law structure have reduced the risk of leakage and improved the quality and safety of the overall engineering of the building.
Smart Images
Figure CN222414177U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of construction engineering, in particular to a positioning structure at the intersection of a prefabricated structure and a cast-in-place structure. Background Art
[0002] In current construction, when improving a building with an original cast-in-place structure, it is necessary to fit the newly made prefabricated structure with the original cast-in-place structure. The existing technical means have prominent problems in positioning accuracy, deformation coordination and anti-seepage performance at the intersection of the prefabricated structure and the cast-in-place structure.
[0003] The current construction plan is:
[0004] First, the existing positioning methods often cannot ensure the precise alignment of the junction between the prefabricated structure and the cast-in-place structure. There is no positioning mechanism between the prefabricated structure and the cast-in-place structure, making it difficult to accurately position and install large-sized and heavy prefabricated structures.
[0005] Secondly, due to the lack of effective deformation coordination structure, the existing technology is to place foam board and waterproof membrane between the cast-in-place heat exchange prefabricated structure for deformation and waterproofing. This structure can only resist certain extrusion deformation, but has limited resistance to tensile and shear deformation, which makes it easy for cracks or dislocations to occur between the prefabricated structure and the cast-in-place structure under the action of tensile force or shear force, affecting the building quality and appearance.
[0006] Furthermore, the existing technology is not ideal in dealing with anti-seepage measures at the junction of prefabricated and cast-in-place structures. Traditional anti-seepage measures often rely on simple sealing materials, such as waterproof membranes or waterproof coatings. The connection between them and concrete causes cracks due to different material parameters, creating seepage channels. Utility Model Content
[0007] The purpose of the utility model is to provide a positioning structure at the intersection of a prefabricated structure and a cast-in-place structure, which can effectively solve the problems of precise positioning, deformation coordination and efficient anti-seepage at the intersection of the prefabricated and cast-in-place structures, and improve the overall project quality and safety.
[0008] To achieve the above purpose, the utility model is implemented through the following technical solutions:
[0009] A positioning structure at the intersection of a prefabricated structure and a cast-in-place structure, comprising a connecting layer connected between the prefabricated structure and the cast-in-place structure, wherein a pre-embedded steel bar assembly is fixed in the connecting layer, and the pre-embedded steel bar assembly comprises a first pre-embedded steel bar and a second pre-embedded steel bar; the first pre-embedded steel bar and the second pre-embedded steel bar extend into the prefabricated structure and the cast-in-place structure respectively, and are fixedly connected to the prefabricated structure and the cast-in-place structure respectively.
[0010] Furthermore: the embedded steel bar one is a plurality of rows of U-shaped steel bars one, and the embedded steel bar two is a plurality of rows of U-shaped steel bars two; both ends of the U-shaped steel bar one are embedded in the prefabricated structure, and both ends of the U-shaped steel bar two are embedded in the cast-in-place structure.
[0011] Furthermore: the U-shaped steel bar 1 and the U-shaped steel bar 2 are arranged alternately.
[0012] Furthermore: the connection layer includes a filling layer that fills the gaps between the U-shaped steel bar components, and a covering layer that wraps around the filling layer.
[0013] Furthermore: the filling layer includes a reinforcement layer filled in the opening of the U-shaped steel bar, and a buffer layer filled in the gap between adjacent U-shaped steel bars.
[0014] Furthermore, the reinforcement layer is composed of a mixture of crushed stone and cement, which can increase the deformation resistance of the U-shaped steel bar.
[0015] Furthermore, the buffer layer is composed of dense sand. The buffer layer composed of dense sand is soft in texture, provides a certain buffer space between the U-shaped steel bars, increases the deformation capacity of the connection layer, and reduces the risk of cracking of the connection layer.
[0016] Furthermore, the coating layer is composed of a mixture of dense sand and cement. The coating layer composed of a mixture of dense sand and cement has good waterproof, antifreeze and anti-corrosion capabilities and can better protect the internal structure of the connection layer.
[0017] Compared with the original technology, the utility model has the following beneficial effects:
[0018] 1. By adding a connecting layer between the cast-in-place structure and the newly added prefabricated structure, the embedded steel bar components in the connecting layer can accurately position the cast-in-place structure and the prefabricated structure, prevent them from deformation and displacement, and further reduce the risk of leakage.
[0019] 2. U-shaped steel bar 2 is embedded in the existing cast-in-place structure through the embedding technology, and U-shaped steel bar 1 is embedded in the prefabricated structure by pre-embedded method. During on-site construction, the positioning of the prefabricated structure is quickly completed by staggering U-shaped steel bar 1 and U-shaped steel bar 2, thereby improving the accuracy of prefabricated structure assembly; the subsequent pouring of the connecting layer is sufficient, and the construction is quick and convenient.
[0020] 3. The connection layer of the utility model reduces the seepage channel and improves the anti-leakage performance through the structure of grouting on the outside and compacting within a certain range inside. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic top view of the utility model;
[0022] Figure 2It is a schematic diagram of a left elevation view of the utility model;
[0023] Figure 3 for Figure 1 A magnified schematic diagram of the middle A area;
[0024] In the figure:
[0025] 1. Cast-in-place structure; 2. Prefabricated structure; 3. Connection layer; 3.1. Reinforcement layer; 3.2. Buffer layer; 3.3. Covering layer; 4.1. U-shaped steel bar 1; 4.2. U-shaped steel bar 2. DETAILED DESCRIPTION
[0026] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0028] A positioning structure at the intersection of a prefabricated structure 2 and a cast-in-place structure 1, comprising a connection layer 3 connected between the prefabricated structure 2 and the cast-in-place structure 1, wherein a pre-embedded steel bar assembly is fixed in the connection layer 3; the pre-embedded steel bar assembly extends into the prefabricated structure 2 and the cast-in-place structure 1 respectively, and is fixedly connected to the prefabricated structure 2 and the cast-in-place structure 1. The pre-embedded steel bar assembly is a plurality of rows of U-shaped steel bar assemblies, each row of U-shaped steel bar assemblies comprises a plurality of staggered U-shaped steel bars 1 and U-shaped steel bars 2, the two ends of the U-shaped steel bar 1 are extended and embedded in the prefabricated structure, and the two ends of the U-shaped steel bar 2 are extended and embedded in the cast-in-place structure, thereby fixing the prefabricated structure and the cast-in-place structure.
[0029] The connection layer 3 includes a filling layer that fills the gaps between the U-shaped steel bar components, and a coating layer 3.3 wrapped around the outside of the filling layer. The filling layer includes a reinforcing layer 3.1 filled in the openings of the U-shaped steel bars (i.e., U-shaped steel bar 1 4.1 and U-shaped steel bar 2 4.2), and a buffer layer 3.2 filled in the gaps between adjacent U-shaped steel bars; the reinforcing layer 3.1 is composed of a mixture of crushed stone and cement. The reinforcing layer 3.1 composed of a mixture of crushed stone and cement can increase the deformation resistance of the U-shaped steel bars; the buffer layer 3.2 is composed of dense sand. The buffer layer 3.2 composed of dense sand is soft in texture, providing a certain buffer space between the U-shaped steel bars, increasing the deformation capacity of the connection layer 3, and reducing the risk of cracking of the connection layer 3. The coating layer 3.3 is composed of a mixture of dense sand and cement. The coating layer 3.3 composed of a mixture of dense sand and cement has good waterproof, antifreeze and anti-corrosion capabilities, and can better protect the internal structure of the connection layer 3.
[0030] The working principle of the utility model is as follows:
[0031] Prefabrication stage: During the manufacturing process of the prefabricated structure 2, a U-shaped steel bar 4.1 is pre-embedded at a corresponding position in the prefabricated structure 2 according to the design requirements, ensuring that both ends thereof are firmly embedded in the interior of the prefabricated structure 2.
[0032] On-site construction stage: During the construction of the cast-in-place structure 1, the U-shaped steel bar 4.2 is implanted into the existing cast-in-place structure 1 using the implantation technology to ensure that it is tightly integrated with the structure. According to the design plan, the prefabricated structure 2 is transported to the construction site, and the U-shaped steel bar 4.1 in the prefabricated structure 2 is staggered with the U-shaped steel bar 4.2 in the cast-in-place structure 1 to ensure accurate positioning between the two.
[0033] Construction of connection layer 3: Fill the reinforcement layer 3.1 between the staggered U-shaped steel bar components. The reinforcement layer 3.1 is made of crushed stone and cement mixed in proportion and then filled into the U-shaped steel bar opening to enhance the rigidity and deformation resistance of the connection structure. Then, fill the buffer layer 3.2 in the remaining gaps between the U-shaped steel bar components. The buffer layer 3.2 uses dense sand to provide sufficient deformation space and shock absorption to reduce the risk of cracking of the connection layer 3. Finally, after the reinforcement layer 3.1 and the buffer layer 3.2 are filled, the connection layer 3 is poured as a whole, and the coating layer 3.3 mixed with dense sand and cement is poured on the outermost layer to ensure that the connection layer 3 has excellent waterproof, antifreeze and anti-corrosion properties, effectively protect the internal structure, and also make the filling layer completely integrated with the prefabricated structure 2, the cast-in-place structure 1 and the coating layer 3.3 to form an integrated and solid connection. After the pouring is completed, wait for the connection layer 3 to fully harden, and finally remove the temporary support and other auxiliary facilities to complete the precise positioning and deformation coordination connection at the intersection of the prefabricated structure 2 and the cast-in-place structure 1.
[0034] The above implementation is only to illustrate the technical concept and features of the utility model, and its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and it cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.
Claims
1. A positioning structure at the intersection of a prefabricated structure and a cast-in-place structure, characterized in that: It includes a connecting layer connected between a prefabricated structure and a cast-in-place structure, in which a pre-embedded steel bar assembly is fixed, and the pre-embedded steel bar assembly includes a pre-embedded steel bar 1 and a pre-embedded steel bar 2; the pre-embedded steel bar 1 and the pre-embedded steel bar 2 extend into the prefabricated structure and the cast-in-place structure respectively, and are fixedly connected to the prefabricated structure and the cast-in-place structure respectively.
2. A positioning structure at the intersection of a prefabricated structure and a cast-in-place structure according to claim 1, characterized in that: The embedded steel bars one are several rows of U-shaped steel bars one, and the embedded steel bars two are several rows of U-shaped steel bars two; both ends of the U-shaped steel bars one are embedded in the prefabricated structure, and both ends of the U-shaped steel bars two are embedded in the cast-in-place structure.
3. A positioning structure at the intersection of a prefabricated structure and a cast-in-place structure according to claim 2, characterized in that: The U-shaped steel bars 1 and 2 are arranged alternately.
4. The positioning structure at the intersection of a prefabricated structure and a cast-in-place structure according to claim 2, characterized in that: The connection layer comprises a filling layer for filling the gaps between the U-shaped steel bar components and a covering layer wrapped around the filling layer.
5. A positioning structure at the intersection of a prefabricated structure and a cast-in-place structure according to claim 4, characterized in that: The filling layer comprises a reinforcing layer filled in the opening of the U-shaped steel bar, and a buffer layer filled in the gap between adjacent U-shaped steel bars.
6. A positioning structure at the intersection of a prefabricated structure and a cast-in-place structure according to claim 5, characterized in that: The buffer layer consists of dense sand.