Prefabricated part connecting joint based on flexible grommet auxiliary supporting structure
By adopting a flexible grommet auxiliary support structure at the nodes of the prefabricated concrete structure, the problems of insufficient tensile resistance and difficulty in precise grommet positioning in traditional technology are solved, and the integrity and seismic performance of the structure are improved.
Patent Information
- Application Number
- CN202421550775.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-05-20
- Estimated Expiration
- 2034-07-03
AI Technical Summary
Traditional prefabricated concrete structures are difficult to ensure tensile resistance at node connections, and grommets are difficult to accurately position, affecting the integrity and seismic performance of the structure.
The prefabricated components connected to the nodes based on the flexible grommet auxiliary support structure are used. By setting a load-bearing rod, a force-bearing piece group and a flexible grommet to ensure that the grommet and the rear-cast concrete are coordinated with the stress and deformation.
It effectively solves the problem of difficult to accurately locate the grommet and insufficient tensile resistance, improves the integrity and seismic performance of the structure, and ensures the reliability of the connection of prefabricated components.
Smart Images
Figure CN222886914U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of construction engineering, in particular to a connection node of precast components based on a flexible cable loop auxiliary support structure. Background Technique
[0002] Prefabricated buildings have the advantages of saving resources, reducing energy consumption, rapid construction, environmental friendliness and high mechanization level, and are an important technical path to achieve "carbon peak" and "carbon neutrality" in the construction industry. According to the joint form, precast concrete structures are mainly divided into vertical joints and horizontal joints, and whether the joints and seams are reliably connected will directly affect the integrity and seismic performance of precast concrete structures. Therefore, how to ensure good mechanical properties of the joints while taking into account rapid construction is a key issue in the research on the seismic performance of precast concrete structures.
[0003] In the traditional technology, the joints between two adjacent precast wall panels are usually treated by filling UHPC (ultra-high performance concrete). However, this treatment method of filling UHPC at the joint position only ensures the compressive capacity between the two precast wall panels, and cannot ensure the tensile capacity between the two precast wall panels. Content of the Utility Model
[0004] The purpose of the utility model is to provide a connection node of precast components based on a flexible cable loop auxiliary support structure, which can not only solve the problem of difficult precise positioning of the cable loop, but also ensure the coordinated force and common deformation of the locking ring and the post-cast concrete.
[0005] To solve the above technical problems, the technical solution of a connection node of precast components based on a flexible cable loop auxiliary support structure in the utility model is as follows:
[0006] A precast component connection node based on a flexible cable loop auxiliary support structure, comprising a first precast wall panel and a second precast wall panel arranged at intervals left and right, and further comprising an auxiliary support structure arranged between the first precast wall panel and the second precast wall panel, characterized in that: the auxiliary support structure includes a load-bearing rod arranged along the length direction of the joint, and a plurality of left-side force-bearing member groups arranged at intervals along the length direction of the load-bearing rod and a plurality of right-side force-bearing member groups arranged at intervals in the up-and-down direction are provided on the load-bearing rod. Each left-side force-bearing member group includes at least two left-side force-bearing members arranged at intervals along the circumferential direction of the load-bearing rod, and each right-side force-bearing member group includes at least two right-side force-bearing members arranged at intervals along the circumferential direction of the load-bearing rod. The auxiliary support structure further includes a first flexible cable loop corresponding to the number of left-side force-bearing member groups and a second flexible cable loop corresponding to the number of right-side force-bearing member groups. The left end of the first flexible cable loop is sleeved on the corresponding left-side force-bearing member, the right end of the first flexible cable loop is connected to the second precast wall panel, the right end of the second flexible cable loop is sleeved on the corresponding right-side force-bearing member, and the left end of the second flexible cable loop is connected to the first precast wall panel. A concrete body is poured into the joint between the load-bearing rod, the left-side force-bearing member group, the right-side force-bearing member group, the first flexible cable loop and the second flexible cable loop and the first precast wall panel and the second precast wall panel.
[0007] Further, the concrete body is a normal concrete body, an ECC concrete body, a UHPC concrete body or a recycled concrete body.
[0008] Further, the load-bearing rod includes a vertical screw rod, and screw sleeves corresponding to the number of left-side force-bearing member groups are threadedly connected to the load-bearing rod. Each left-side force-bearing member of each left-side force-bearing member group is fixed to the left side of the corresponding screw sleeve, and each right-side force-bearing member of each right-side force-bearing member group is fixed to the right side of the corresponding screw sleeve.
[0009] Further, the left-side force-bearing member includes a left-side radial screw rod threadedly connected to the screw sleeve. The axis of the left-side radial screw rod extends along the radial direction of the screw sleeve. A left-side steel frame is fixed on the left-side radial screw rod, and a vertically arranged left-side C-shaped support is fixed at the end of the left-side steel frame away from the screw sleeve. The left end of the first flexible cable loop is sleeved on the corresponding left-side C-shaped support.
[0010] Further, a left-side threaded blind hole for screwing the left-side radial screw rod is provided on the screw sleeve.
[0011] Further, the right-side force-bearing member includes a right-side radial screw rod threadedly connected to the screw sleeve. The axis of the right-side radial screw rod extends along the radial direction of the screw sleeve. A right-side steel frame is fixed on the right-side radial screw rod, and a vertically arranged right-side C-shaped support is fixed at the end of the right-side steel frame away from the screw sleeve. The right end of the second flexible cable loop is sleeved on the corresponding right-side C-shaped support.
[0012] Further, a right-side threaded blind hole for screwing the right-side radial screw rod is provided on the screw sleeve.
[0013] The beneficial effects of the present utility model are as follows: In the present utility model, adjacent first precast wall panels and second precast wall panels are connected through an auxiliary support structure. When there is a tendency of relative movement between the two precast wall panels, the concrete body ensures the compressive capacity between the two precast wall panels; when there is a tendency of opposite movement between the two precast wall panels, for example, when the second precast wall panel has a tendency to move to the right, the tensile force of the second precast wall panel is transmitted to the load-bearing rod through the first flexible cable loop, and then transmitted to the first precast wall panel through the second flexible cable loop to ensure the tensile force between the two precast wall panels.
[0014] The entire auxiliary support system has a simple structure, ingenious design, and reasonable layout, which can effectively solve the key problems of difficult precise positioning of the cable loop, difficult coordinated force bearing and common deformation between the cable loop and the post-cast concrete, and improve the integrity and seismic performance of the structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] By referring to the accompanying drawings and reading the following detailed description, the above and other objects, features, and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the drawings, several embodiments of the present disclosure are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:
[0016] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;
[0017] Figure 2 is Figure 1 a schematic diagram of the cooperation of the load-bearing rod, the force-bearing member, the first flexible cable loop, and the second flexible cable loop in
[0018] Figure 3 is Figure 2 a schematic diagram of the cooperation of the screw sleeve, the force-bearing member, the first flexible cable loop, and the second flexible cable loop in
[0019] Figure 4 is Figure 3 a schematic diagram of the cooperation of the screw sleeve and the force-bearing member in
[0020] Figure 5 is Figure 4 a perspective view of
[0021] Figure 6 is Figure 5 an exploded view of
[0022] Figure 7 is Figure 6 a schematic structural diagram of the screw sleeve in
[0023] Figure 8 is Figure 6 a schematic structural diagram of the left load-bearing member in
[0024] 1. First precast wall panel; 2. Second precast wall panel; 3. Auxiliary support structure; 4. Second flexible cable loop; 5. First flexible cable loop; 6. Vertical screw rod; 7. Screw sleeve; 8. Load-bearing rod; 9. Left-side force-bearing member group; 10. Right-side force-bearing member group; 11. Left-side force-bearing member; 12. Right-side force-bearing member; 13. Right-side force-bearing member; 14. Left-side blind threaded hole; 15. Left-side radial screw rod; 16. Left-side steel frame; 17. Left-side C-shaped support; 18. Right-side radial screw rod; 19. Right-side C-shaped support; 20. Right-side steel frame. Detailed implementation manners
[0025] For the convenience of understanding the present utility model, the present utility model will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. The preferred embodiments of the present utility model are given in the accompanying drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present utility model more thorough and comprehensive.
[0026] It should be noted that unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not used to limit the present utility model.
[0027] An embodiment of a connection node of a precast member based on a flexible cable loop auxiliary support structure in the present utility model is as Figures 1 - 8 shown: It includes a first precast wall panel and a second precast wall panel arranged at intervals left and right. The connection node of the precast member further includes an auxiliary support structure arranged between the first precast wall panel and the second precast wall panel. The auxiliary support structure includes a load-bearing rod arranged along the length direction of the joint seam. The load-bearing rod is located at the middle position between the first precast wall panel and the second precast wall panel. A plurality of left-side force-bearing member groups arranged at intervals along the length direction of the load-bearing rod and a plurality of right-side force-bearing member groups arranged at intervals in the up and down direction are provided on the load-bearing rod. In this embodiment, there are five left-side force-bearing member groups and five right-side force-bearing member assemblies.
[0028] Each left stress component group includes two left stress components spaced circumferentially along the load-bearing rod, and each right stress component group includes two right stress components spaced circumferentially along the load-bearing rod. The auxiliary support structure further includes a first flexible cable loop corresponding to the number of left stress component groups and a second flexible cable loop corresponding to the number of right stress component groups. The left end of the first flexible cable loop is sleeved on each left stress component of a corresponding left stress component group, and the right end of the first flexible cable loop is fixedly connected to the second precast wall panel. When the second precast wall panel is precast, the right end of the first flexible cable loop has already been connected; the right end of the second flexible cable loop is sleeved on each right stress component of a corresponding right stress component group, and the left end of the second flexible cable loop is fixedly connected to the first precast wall panel. When the first precast wall panel is precast, the left end of the second flexible cable loop has already been connected.
[0029] Concrete is poured into the gaps between the load-bearing rod, the left stress component group, the right stress component group, the first flexible cable loop and the second flexible cable loop and the first precast wall panel and the second precast wall panel. The concrete in this embodiment is post-cast UHPC concrete. In other embodiments of the present invention, the concrete can also be ECC concrete, recycled concrete or ordinary concrete made of ordinary concrete, etc.
[0030] The load-bearing rod includes a vertical screw rod, and a corresponding number of nuts are threadedly connected to the load-bearing rod. The nuts are threadedly connected to the vertical screw rod, so the height of each nut can be adjusted. Each left stress component of each left stress component group is fixed to the left side of the corresponding nut, and each right stress component of each right stress component group is fixed to the right side of the corresponding nut.
[0031] The left stress component includes a left radial screw rod threadedly connected to the nut. The axis of the left radial screw rod extends along the radial direction of the nut. A left steel frame is fixed on the left radial screw rod. A vertically arranged left C-shaped support is fixed at the end of the left steel frame away from the nut. The left end of the first flexible cable loop is sleeved on the corresponding left C-shaped support. A left threaded blind hole for screwing the left radial screw rod is provided on the nut. By screwing the left radial screw rod, the radial position of the left C-shaped support can be adjusted.
[0032] The right stress component includes a right radial screw rod threadedly connected to the nut. The axis of the right radial screw rod extends along the radial direction of the nut. A right steel frame is fixed on the right radial screw rod. A vertically arranged right C-shaped support is fixed at the end of the right steel frame away from the nut. The right end of the second flexible cable loop is sleeved on the corresponding right C-shaped support. A right threaded blind hole for screwing the right radial screw is provided on the nut. By screwing the right radial screw rod, the radial position of the right C-shaped support can be adjusted.
[0033] In use, cross the first flexible cable loop with the corresponding second flexible cable loop, then insert the load-bearing rod at the crossing position of the first flexible cable loop and the second flexible cable loop, and adjust the radial positions of the corresponding left C-shaped support and right C-shaped support so that the left end of the first flexible cable loop is sleeved on the left C-shaped support of the corresponding left load-bearing member, and the right end of the second flexible cable loop is sleeved on the right C-shaped support of the corresponding right load-bearing member, with the first flexible cable loop and the second flexible cable loop in a critical stress state. Finally, pour a concrete body into the gaps between the load-bearing rod, the left load-bearing member group, the right load-bearing member group, the first flexible cable loop, the second flexible cable loop, and the first precast wall panel and the second precast wall panel, thus completing the connection of the first precast wall panel and the second precast wall panel.
[0034] The first flexible cable loop and the second flexible cable loop are made of high-strength steel wire ropes. Due to the good flexibility of the high-strength steel wire ropes, during the actual assembly of precast components, the high-strength steel wire ropes are straightened through the adjustment of the radial screws, so as to meet the deformation coordination between the steel wire ropes and the UHPC, and fully exert the cooperative stress performance of the flexible cable loops and the concrete body.
[0035] In the above description of this specification, unless otherwise clearly specified and limited, terms such as "fixed", "installed", "connected" or "joined" should be understood in a broad sense. For example, regarding the term "connected", it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication of two components or the interaction relationship between two components. Therefore, unless otherwise clearly limited in this specification, those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific circumstances.
[0036] According to the above description of this specification, those skilled in the art can also understand the following terms used, such as "upper", "lower", "front", "rear", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "center", "longitudinal", "transverse", "clockwise" or "counterclockwise", etc. Terms indicating orientation or position relationship are based on the orientation or position relationship shown in the drawings of this specification. They are only for the purpose of facilitating the description of the solution of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the devices or elements involved must have the specific orientation, be constructed and operate in the specific orientation. Therefore, the above terms of orientation or position relationship cannot be understood or interpreted as a limitation to the solution of the present invention.
[0037] In addition, the terms "first" or "second" used in this specification, which are terms used to refer to numbers or ordinals, are only for descriptive purposes and should not be construed as explicitly or implicitly indicating relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, the meaning of "a plurality" is at least two, such as two, three or more, etc., unless otherwise specifically defined.
[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A prefabricated component connection node based on a flexible grommet auxiliary support structure, comprising a first prefabricated wall panel and a second prefabricated wall panel spaced apart from each other, and also comprising an auxiliary support structure arranged between the first prefabricated wall panel and the second prefabricated wall panel, characterized in that: The auxiliary support structure includes a load-bearing rod arranged along the length direction of the joint, and the load-bearing rod is provided with a plurality of left-side load-bearing member groups arranged at intervals along the length direction of the load-bearing rod and a plurality of right-side load-bearing member groups arranged at intervals along the up-down direction, each left-side load-bearing member group includes at least two left-side load-bearing members arranged at intervals along the circumference of the load-bearing rod, and each right-side load-bearing member group includes at least two right-side load-bearing members arranged at intervals along the circumference of the load-bearing rod, the auxiliary support structure also includes a first flexible cable ring corresponding to the number of the left-side load-bearing member groups and a second flexible cable ring corresponding to the number of the right-side load-bearing member groups, the left end of the first flexible cable ring is sleeved on the corresponding left-side load-bearing member, the right end of the first flexible cable ring is connected to the second prefabricated wall panel, the right end of the second flexible cable ring is sleeved on the corresponding right-side load-bearing member, and the left end of the second flexible cable ring is connected to the first prefabricated wall panel, and a concrete body is poured in the joint between the load-bearing rod, the left-side load-bearing member group, the right-side load-bearing member group, the first flexible cable ring, the second flexible cable ring and the first prefabricated wall panel and the second prefabricated wall panel.
2. The prefabricated component connection node according to claim 1, characterized in that: The concrete body is a common concrete body, an ECC concrete body, a UHPC concrete body or a recycled concrete body.
3. The prefabricated component connection node according to claim 1, characterized in that: The load-bearing rod includes a vertical screw rod, on which a screw sleeve corresponding to the number of left-side load-bearing member groups is threadedly connected. Each left-side load-bearing member of each left-side load-bearing member group is fixed to the left side of the corresponding screw sleeve, and each right-side load-bearing member of each right-side load-bearing member group is fixed to the right side of the corresponding screw sleeve.
4. The prefabricated component connection node according to claim 3, characterized in that: The left side force-bearing member includes a left side radial screw threadedly connected to the screw sleeve, the axis of the left side radial screw is radially extended along the screw sleeve, a left side steel frame is fixed on the left side radial screw, a vertically arranged left side C-shaped support is fixed to the end of the left side steel frame away from the screw sleeve, and the left end of the first flexible cable ring is connected to the corresponding left side C-shaped support.
5. The prefabricated component connection node according to claim 4, characterized in that: The screw sleeve is provided with a left-side threaded blind hole for the left-side radial screw to be screwed.
6. The prefabricated component connection node according to claim 3, characterized in that: The right side force-bearing member includes a right side radial screw threadedly connected to the screw sleeve, the axis of the right side radial screw is radially extended along the screw sleeve, a right side steel frame is fixed on the right side radial screw, a vertically arranged right side C-shaped support is fixed to the end of the right side steel frame away from the screw sleeve, and the right end of the second flexible cable ring is connected to the corresponding right side C-shaped support.
7. The prefabricated component connection node according to claim 6, characterized in that: The screw sleeve is provided with a right-side threaded blind hole for right-side radial spiral screwing.