Straight thread sleeve connection precast concrete frame
By connecting precast concrete frames with straight threaded sleeves, the problems of low construction efficiency and high cost in existing connection methods are solved, achieving a high-efficiency and reliable connection suitable for industrial production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TONGJI UNIV
- Filing Date
- 2025-05-07
- Publication Date
- 2026-05-12
AI Technical Summary
Existing connection methods for precast concrete frame structures suffer from problems such as large amounts of wet work, low construction efficiency, high costs, and difficulty in quality control, which limit their widespread application.
The precast concrete frame is connected by a straight threaded sleeve. The upper and lower precast concrete columns, foundations and beams are connected by the straight threaded sleeve, which simplifies the connection operation, improves construction efficiency and ensures the connection quality.
It simplifies the connection process, improves construction efficiency, reduces costs, is suitable for large-scale factory production, and offers reliable connection quality with minimal environmental impact.
Smart Images
Figure CN224227967U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of civil engineering, specifically to a straight threaded sleeve connection for a precast concrete frame. Background Technology
[0002] Precast concrete frame structures represent an industrialized construction method that aligns with the requirements of large-scale industrial production and green, sustainable development. Precast concrete structures offer advantages such as high production efficiency, rapid construction, energy conservation and emission reduction, high product quality, minimal environmental impact, and significant savings in formwork. In recent years, with the advancement of residential industrialization and industrialization in my country, precast concrete frame structures have demonstrated immense development potential and room for growth.
[0003] Currently, the precast concrete frame structures mainly used both domestically and internationally consist of a load-bearing system composed of precast beams, columns, floor slabs, and other structural components. Connections between precast concrete components are generally achieved through methods such as post-cast concrete pouring, prestressing, welding, bolting, and grouting sleeve connections.
[0004] However, these connection schemes still have the following problems in practical applications, such as a large amount of wet work on-site for post-cast concrete, resulting in low assembly efficiency; complex prestressed connection processes and high costs; high construction requirements, low construction efficiency, difficulty in guaranteeing quality, and poor seismic performance for welded connections; complex connector structures and relatively high prices required for bolted connections; and poor compaction and difficulty in quality control of grouting materials for sleeve grouting connections. These problems in the connection schemes have become one of the main factors restricting the widespread application of precast concrete frame structures. Utility Model Content
[0005] This utility model was developed to solve the above-mentioned problems, and its purpose is to provide a straight threaded sleeve connection for precast concrete frames.
[0006] This utility model provides a precast concrete frame connected by straight threaded sleeves, characterized by: multiple central node core areas; multiple upper precast concrete columns located at the top of the central node core areas; multiple lower precast concrete columns located at the bottom of the central node core areas; a foundation located at the bottom of the lower precast concrete columns; multiple precast concrete beams located on both sides of the central node core areas; multiple post-cast concrete composite layers located on the precast concrete beams; and multiple straight threaded sleeves, with the upper and lower precast concrete columns, as well as the lower precast concrete and foundation, connected by the multiple straight threaded sleeves.
[0007] The precast concrete frame connected by the straight threaded sleeve provided in this utility model may also have the following features: the interior of the upper precast concrete column is provided with multiple steel bars that extend to the upper and lower sides to the outer side of the upper precast concrete column to form multiple upper reserved longitudinal bars, and the length of the lower upper reserved longitudinal bars of the upper precast concrete column is greater than the length of the upper reserved longitudinal bars.
[0008] The precast concrete frame connected by the straight threaded sleeve provided by this utility model may also have the following features: the upper reserved longitudinal reinforcement at the bottom of the upper precast concrete column passes through the core area of the middle node, and the end away from the upper precast concrete column is provided with an upper threaded section.
[0009] The precast concrete frame connected by the straight threaded sleeve provided in this utility model may also have the following features: the interior of the lower precast concrete column is provided with multiple steel bars that extend to the upper and lower sides to the outer side of the lower precast concrete column to form multiple lower reserved longitudinal bars, and the lower reserved longitudinal bars are provided with a lower threaded section at the end away from the lower precast concrete column.
[0010] The precast concrete frame connected by the straight threaded sleeve provided in this utility model may also have the following feature: the lower threaded section at the top of the lower precast concrete column is connected to the upper threaded section through the straight threaded sleeve.
[0011] The precast concrete frame connected by the straight threaded sleeve provided in this utility model may also have the following features: multiple steel bars are provided inside the foundation, extending upward to the outside of the foundation to form multiple foundation reserved longitudinal bars, and a foundation threaded section is provided at the end of the foundation reserved longitudinal bars away from the foundation.
[0012] The precast concrete frame connected by the straight threaded sleeve provided in this utility model may also have the following feature: the foundation threaded section is connected to the lower threaded section at the bottom of the lower precast concrete column through the straight threaded sleeve.
[0013] The precast concrete frame connected by the straight threaded sleeve provided in this utility model may also have the following features: the interior of the precast concrete beam is provided with multiple steel bars, which extend laterally to the outer side of the precast concrete beam to form multiple lower reserved longitudinal bars. The lower reserved longitudinal bars near the core area of the middle node are inserted into the core area of the middle node and welded to the core area of the middle node, while the lower reserved longitudinal bars away from the core area of the middle node are inserted into the core area of the side node and anchored to the core area of the side node.
[0014] Functions and effects of utility models
[0015] According to this utility model, a straight-threaded sleeve connection for precast concrete frames connects upper and lower precast concrete columns, as well as lower precast concrete columns and foundations, through multiple straight-threaded sleeves. Compared to traditional precast concrete frame structure connection methods, this method is simpler to operate, improves construction efficiency, saves construction time, and has less environmental impact. The straight-threaded sleeve connection between components ensures reliable connection quality, and the lower production cost of straight-threaded sleeves makes them more suitable for large-scale factory production, resulting in high economic benefits. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of the straight threaded sleeve connecting the precast concrete frame in an embodiment of this utility model;
[0017] Figure 2 This is a schematic diagram of the structure of the core area of the middle node in an embodiment of this utility model;
[0018] Figure 3 This is a structural schematic diagram of the upper precast concrete column in an embodiment of this utility model;
[0019] Figure 4 This is a structural schematic diagram of the lower precast concrete column in an embodiment of this utility model;
[0020] Figure 5 This is a basic structural schematic diagram of an embodiment of this utility model;
[0021] Figure 6 This is a structural schematic diagram of the precast concrete beam in an embodiment of this utility model.
[0022] Explanation of symbols for main components:
[0023] In the diagram: 100. Straight threaded sleeve connection to precast concrete frame; 1. Foundation; 2. Lower precast concrete column; 3. Upper precast concrete column; 4. Precast concrete beam; 5. Lower connection area; 6. Upper connection area; 7. Straight threaded sleeve; 8. Lower reserved longitudinal reinforcement; 9. Lower stirrups; 10. Lower reserved longitudinal reinforcement; 11. Precast concrete beam stirrups; 12. Composite layer longitudinal reinforcement; 13. Mid-node core area; 14. Post-cast concrete composite layer; 15. Upper reserved longitudinal reinforcement; 16. Upper stirrups; 17. Foundation reserved longitudinal reinforcement. Detailed Implementation
[0024] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0025] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0027] To make the technical means, creative features, objectives and effects of this utility model easy to understand, the following embodiments, in conjunction with the accompanying drawings, will specifically illustrate the straight threaded sleeve connection of the precast concrete frame of this utility model.
[0028] Figure 1 This is a structural schematic diagram of the precast concrete frame 100 connected by a straight threaded sleeve in an embodiment of this utility model.
[0029] like Figure 1 As shown, the precast concrete frame 100 connected by the straight threaded sleeve in this embodiment includes: multiple central node core areas 13, multiple upper precast concrete columns 3, multiple lower precast concrete columns 2, foundation 1, multiple precast concrete beams 4, multiple post-cast concrete composite layers 14, and multiple straight threaded sleeves 7.
[0030] in, Figure 1 The structure shown includes a central node core area 13, three upper precast concrete columns 3, three lower precast concrete columns 2, a foundation 1, two precast concrete beams 4, a post-cast concrete composite layer 14, and multiple threaded sleeves 7 connecting the upper precast concrete columns 3 to the lower precast concrete columns 2 and connecting the lower precast concrete columns 2 to the foundation 1. In practical applications, the area or size of the threaded sleeve connection precast concrete frame 100 can be increased by adding the above components to form a larger threaded sleeve connection precast concrete frame 100, depending on the required arrangement of the threaded sleeve connection area or size.
[0031] Figure 2This is a schematic diagram of the structure of the core area 13 of the middle node in this embodiment of the present invention.
[0032] Figure 3 This is a schematic diagram of the upper precast concrete column 3 in an embodiment of this utility model.
[0033] like Figure 1-3 As shown, the upper precast concrete column 3 is located at the top of the core area 13 of the middle node. Multiple reinforcing bars are installed inside the upper precast concrete column 3, extending upwards and downwards to the outer sides of the upper precast concrete column to form multiple upper reserved longitudinal bars 15. The length of the lower upper reserved longitudinal bars 15 of the upper precast concrete column 3 is greater than the length of the upper upper reserved longitudinal bars 15, and it has greater flexibility, making it easier to adjust and position.
[0034] The upper-level reserved longitudinal reinforcement 15 at the bottom of the upper-level precast concrete column 3 passes through the core area 13 of the middle node, and the end away from the upper-level precast concrete column 3 is provided with an upper-level threaded section.
[0035] The upper precast concrete column 3 has multiple evenly distributed upper stirrups 16 inside, which are perpendicular to and connected to the internal steel bars of the upper precast concrete column 3.
[0036] Figure 4 This is a schematic diagram of the lower precast concrete column 2 in an embodiment of this utility model.
[0037] like Figure 1-2 and Figure 4 As shown, the lower precast concrete column 2 is located at the bottom of the core area 13 of the middle node. The lower precast concrete column 2 has multiple steel bars inside, which extend to the upper and lower sides to the outside of the lower precast concrete column 2 to form multiple lower reserved longitudinal bars 8.
[0038] The lower layer reserved longitudinal reinforcement 8 has a lower layer threaded section at the end away from the lower layer precast concrete column 2.
[0039] The lower threaded section at the top of the lower precast concrete column 2 is connected to the upper threaded section through a straight threaded sleeve 7. The area of connection is called the upper connection area 6.
[0040] The lower precast concrete column 2 has multiple evenly distributed lower stirrups 9 inside, which are perpendicular to and connected to the internal steel bars of the lower precast concrete column 2.
[0041] Figure 5 This is a schematic diagram of the structure of the basic 1 in the embodiment of this utility model.
[0042] like Figure 1 and Figure 5As shown, foundation 1 is set at the bottom of the lower precast concrete column 2. Multiple steel bars are set inside foundation 1, extending upward to the outside of foundation 1 to form multiple foundation reserved longitudinal bars 17. The end of foundation reserved longitudinal bars 17 away from foundation 1 is provided with foundation thread section.
[0043] The basic threaded section is connected to the lower threaded section at the bottom of the lower precast concrete column 2 through the straight threaded sleeve 7. The connection area is called the lower connection area 5.
[0044] Figure 6 This is a schematic diagram of the structure of the precast concrete beam 4 in this embodiment of the present invention.
[0045] like Figure 1 and Figure 4 As shown, multiple precast concrete beams 4 are respectively set on both sides of the core area 13 of the central node. Multiple steel bars are set inside the precast concrete beams 4, extending laterally to the outer side of the precast concrete beams 4 to form multiple lower reserved longitudinal bars 10.
[0046] The lower reserved longitudinal reinforcement 10 near the core area 13 of the middle node is inserted into the core area 13 of the middle node and welded to the core area 13 of the middle node. The lower reserved longitudinal reinforcement 10 far from the core area 13 of the middle node is inserted into the core area of the side node, and the lower reserved longitudinal reinforcement 10 located inside the core area of the side node is bent and anchored to the core area of the side node.
[0047] The precast concrete beam 4 has multiple evenly distributed precast concrete beam stirrups 11 inside, extending upwards to the outside of the precast concrete beam 4. The precast concrete beam stirrups 11 are arranged perpendicularly to each other and connected to the internal steel bars of the precast concrete beam 4.
[0048] The post-cast concrete composite layer 14 is set on the precast concrete beam 4 and is cast in place. The post-cast concrete composite layer 14 is provided with composite layer longitudinal reinforcement 12, which runs through the core area 13 of the middle node, and the two ends of the composite layer longitudinal reinforcement 12 are inserted into the core area of the edge node.
[0049] The specific construction process of the straight threaded sleeve connection of the precast concrete frame 100 in this embodiment is as follows:
[0050] S1: Lay foundation 1 on the ground. The threaded section of the foundation with reserved longitudinal reinforcement 17 is connected to the lower threaded section of the lower precast concrete column 2 through a straight threaded sleeve 7, and the lower precast concrete column 2 is installed on foundation 1. Pour concrete in the lower connection area 5.
[0051] S2: The lower threaded section of the lower precast concrete column 2 is connected to the upper threaded section through a straight threaded sleeve 7, and the upper precast concrete column 3 is installed on the lower precast concrete column 2. Concrete is poured in the upper connection area 6.
[0052] S3: Erect supports and hoist the precast concrete beams 4 on both sides. The lower reserved longitudinal reinforcement 10 near the central node core area 13 is inserted into the central node core area 13 and welded to it. The lower reserved longitudinal reinforcement 10 away from the central node core area 13 is inserted into the edge node core area, and the lower reserved longitudinal reinforcement 10 located inside the edge node core area is bent and anchored to the edge node core area.
[0053] S4: Install the composite layer longitudinal reinforcement 12, which penetrates the core area 13 of the central node and is inserted at both ends into the core area of the edge node. Tie the precast concrete beam stirrups 11 and the composite layer longitudinal reinforcement 12. Pour concrete into the core area 13 of the central node, the core area of the edge node, and the post-cast concrete composite layer 14. Continue in this manner to complete the construction of the precast concrete frame 100 with the pre-set straight threaded sleeve connection.
[0054] Functions and effects of the embodiments
[0055] According to the straight threaded sleeve connection of the precast concrete frame 100 involved in this embodiment, the upper precast concrete column 3 and the lower precast concrete column 2, as well as the lower precast concrete column 2 and the foundation 1, are connected by multiple straight threaded sleeves 7. Compared with the connection method of traditional precast concrete frame structures, the operation is simpler, the construction efficiency is improved, the construction period is saved, and the environmental impact is smaller. The connection between components by straight threaded sleeves 7 can ensure reliable connection quality. At the same time, the production cost of straight threaded sleeves 7 is low, making them more suitable for large-scale factory production and resulting in high economic benefits.
[0056] The length of the lower layer of the precast concrete column 3 is greater than that of the upper layer of the precast longitudinal reinforcement 15, and it has greater flexibility, making it easier to adjust and position.
[0057] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A straight threaded sleeve connection for a precast concrete frame, characterized in that, include: Multiple core areas at intermediate nodes; Multiple upper-level precast concrete columns are provided at the top of the core area of the central node; Multiple lower-level precast concrete columns are provided at the bottom of the core area of the central node; The foundation is set at the bottom of the lower precast concrete column; Multiple precast concrete beams are respectively set on both sides of the core area of the central node; Multiple layers of post-cast concrete are respectively set on the precast concrete beam; Multiple straight threaded sleeves are used to connect the upper precast concrete column, the lower precast concrete column, and the foundation.
2. The precast concrete frame connected by a straight threaded sleeve according to claim 1, characterized in that: in, The upper precast concrete column has multiple steel bars inside, which extend to the upper and lower sides to form multiple upper reserved longitudinal bars. The length of the lower upper reserved longitudinal bars of the upper precast concrete column is greater than the length of the upper reserved longitudinal bars.
3. The precast concrete frame connected by a straight threaded sleeve according to claim 2, characterized in that: in, The upper-layer reserved longitudinal reinforcement at the lower part of the upper-layer precast concrete column passes through the core area of the middle node, and an upper-layer threaded section is provided at the end away from the upper-layer precast concrete column.
4. The precast concrete frame connected by a straight threaded sleeve according to claim 3, characterized in that: in, The lower precast concrete column has multiple reinforcing bars inside, extending upwards and downwards to the outer side of the lower precast concrete column to form multiple lower reserved longitudinal bars. The lower layer reserved longitudinal reinforcement is provided with a lower layer threaded section at the end away from the lower layer precast concrete column.
5. The precast concrete frame connected by a straight threaded sleeve according to claim 4, characterized in that: in, The lower threaded section at the top of the lower precast concrete column is connected to the upper threaded section through the straight threaded sleeve.
6. The precast concrete frame connected by a straight threaded sleeve according to claim 4, characterized in that: in, The foundation has multiple steel bars inside, which extend upward to the outside of the foundation to form multiple foundation reserved longitudinal bars. The end of the foundation reserved longitudinal bars away from the foundation is provided with a foundation threaded section.
7. The precast concrete frame connected by a straight threaded sleeve according to claim 6, characterized in that: in, The basic threaded section is connected to the lower threaded section at the bottom of the lower precast concrete column via a straight threaded sleeve.
8. The precast concrete frame connected by a straight threaded sleeve according to claim 7, characterized in that: in, The precast concrete beam has multiple reinforcing bars inside, extending laterally to both sides to form multiple lower reserved longitudinal bars. The lower reserved longitudinal bars near the core area of the central node are inserted into the core area of the central node and welded to it. The lower reserved longitudinal reinforcement, which is far from the core area of the middle node, is inserted into the core area of the side node and anchored to the core area of the side node.
9. The precast concrete frame connected by a straight threaded sleeve according to claim 8, characterized in that: in, The post-cast concrete composite layer is provided with composite layer longitudinal reinforcement, which penetrates the core area of the middle node, and the two ends of the composite layer longitudinal reinforcement are inserted into the core area of the side node.