A prestressed anchor cable structure for a long-span frame beam

Abstract

The utility model discloses a prestressed anchor cable structure of large span frame beam relates to large span frame beam technical field. Including large span frame beam, the prestressed anchor cable is embedded along its length direction in large span frame beam, and the both ends of prestressed anchor cable and located large span frame beam outside position are provided with adjustable anchor device, and adjustable anchor device is used to adjust the prestressed force size that prestressed anchor cable exerts to large span frame beam. Adjustable anchor device includes bottom bracket structure and anchoring limiting body, and bottom bracket structure leans on the outside of large span frame beam and is used to support anchoring limiting body, and sets up the adjusting peg on anchoring limiting body. In the prestressed anchor cable structure of large span frame beam of the device, the anchoring of anchor cable is carried out on large span frame beam with adjustable anchor device, can adjust the prestressed force, to long -term satisfy the demand of large span frame beam to exert the prestressed force, and then make large span frame beam support stability get long -term guarantee.

Description

Technical Field

[0001] This utility model relates to the field of large-span frame beam technology, and in particular to a prestressed anchor cable structure for a large-span frame beam. Background Technology

[0002] With the increasing diversification and complexity of functional requirements in modern architecture, large-span spatial structures are being used more and more widely in building construction. Large-span prestressed frame beams, as an important structural form, can effectively solve problems such as large spans, high load-bearing capacity requirements, and strict deformation control in large-space buildings. Large-span frame beams refer to frame beams with a span of not less than 18 meters. Reinforced concrete is the most commonly used material in traditional building frame structures. To ensure the safety and stability of the structure, prestressed anchor cables are generally installed inside the frame beams to apply prestress, thereby alleviating load pressure.

[0003] Prestressed anchor cable structures generally consist of anchor cables passing through large-span frame beams and anchorages that anchor both ends of the anchor cables to the large-span frame beams. The anchorages then tension the anchor cables to generate prestress in the large-span frame beams. However, anchorages are typically small in size and, when anchored to concrete frame beams and kept under tension for extended periods, are prone to instability. Another major problem is that existing prestressed anchor cables, when kept under tension for extended periods, cannot adjust the applied prestress. Due to environmental factors such as long-term temperature variations, the span of the frame beams in large-span building frame structures can change to varying degrees, causing the prestress applied by the anchor cables to be insufficient to meet the stability requirements of the large-span frame beams, thus affecting their overall stability.

[0004] Therefore, based on the above-mentioned technical problems, those skilled in the art urgently need to develop a prestressed anchor cable structure for large-span frame beams. Utility Model Content

[0005] The purpose of this invention is to provide a prestressed anchor cable structure for a large-span frame beam in order to solve the above-mentioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: This utility model discloses a prestressed anchor cable structure for a large-span frame beam, comprising a large-span frame beam, wherein prestressed anchor cables are pre-embedded in the large-span frame beam along its length direction, and adjustable anchors are provided at both ends of the prestressed anchor cables and located outside the large-span frame beam, wherein the adjustable anchors are used to adjust the magnitude of the prestress applied by the prestressed anchor cables to the large-span frame beam. The adjustable anchor includes a bottom bracket structure and an anchoring limiting body. The bottom bracket structure abuts against the outside of the large-span frame beam and supports the anchoring limiting body. An adjusting bolt is provided on the anchoring limiting body. The adjusting bolt is used to pull the prestressed anchor cable and fix it on the anchoring limiting body. The adjusting bolt and the anchoring limiting body are threaded together to adjust the magnitude of the prestress applied by the prestressed anchor cable to the large-span frame beam.

[0007] Furthermore, the bracket structure includes a supporting base plate, which is embedded in the large-span frame beam. Side support plates extending outward from the large-span frame beam are vertically arranged at both ends of the supporting base plate. An arc-shaped plate is arranged between the two sets of side support plates, with the outer arc surface of the arc-shaped plate facing the supporting base plate. Multiple support ribs are connected between the outer arc surface of the arc-shaped plate and the supporting base plate.

[0008] Furthermore, the anchoring limiting body is supported at both ends by two adjacent sets of bracket structures, and space is left between the two sets of bracket structures for the prestressed anchor cable to pass through.

[0009] Furthermore, the anchoring limiting body is a cylindrical structure used to match the arc-shaped plate and form surface contact.

[0010] Furthermore, the adjusting bolt is a bolt structure with external threads and an axial through hole for the prestressed anchor cable to pass through. The center of the side of the anchoring limiter is provided with a threaded hole that is threaded to engage with the adjusting bolt. The end of the prestressed anchor cable passing through the through hole is fixed by a clamp.

[0011] Furthermore, a cap is coaxially arranged on one end of the adjusting bolt opposite to the anchoring limiting body. Two sets of nut blocks are symmetrically arranged on both sides of the cap. A threaded push rod is provided on the nut block and threadedly engaged with it. A limiting groove is opened on the side surface of the anchoring limiting body so that the end of the threaded push rod can extend into it.

[0012] In the above technical solution, the prestressed anchor cable structure for a large-span frame beam provided by this utility model has the following beneficial effects: In the prestressed anchor cable structure of the large-span frame beam in this device, the anchor cables are anchored on the large-span frame beam using adjustable anchors, which can adjust the prestress to meet the long-term prestress requirements of the large-span frame beam, thereby ensuring the long-term stability of the large-span frame beam support. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 A structural schematic diagram of a prestressed anchor cable structure for a large-span frame beam provided for an embodiment of this utility model; Figure 2 A side view of a prestressed anchor cable structure for a large-span frame beam provided in an embodiment of this utility model; Figure 3 A schematic diagram of an adjustable anchorage for a prestressed anchor cable structure of a large-span frame beam, provided for an embodiment of this utility model; Figure 4 A side view of an adjustable anchorage for a prestressed anchor cable structure of a large-span frame beam, provided for an embodiment of this utility model; Figure 5 A schematic diagram of two sets of bracket structures supporting the anchorage limiting body of a prestressed anchor cable structure for a large-span frame beam provided in an embodiment of this utility model; Figure 6 A front view of the anchorage limiting body and adjusting bolt of a prestressed anchor cable structure for a large-span frame beam provided in an embodiment of this utility model; Figure 7 This is a front view of the anchorage limiting body of a prestressed anchor cable structure for a large-span frame beam, provided as an embodiment of the present invention.

[0015] Explanation of reference numerals in the attached figures: 1. Large-span frame beam; 2. Prestressed anchor cable; 3. Anchorage limiting body; 4. Adjusting bolt; 5. Supporting base plate; 6. Side support plate; 7. Curved plate; 8. Supporting rib plate; 9. Through hole; 10. Threaded hole; 11. Wedge; 12. Booster; 13. Nut block; 14. Threaded top rod; 15. Limiting groove. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0017] Please see Figure 1-7A prestressed anchor cable structure for a large-span frame beam includes a large-span frame beam 1, with prestressed anchor cables 2 embedded along its length within the large-span frame beam 1. Adjustable anchors are installed at both ends of the prestressed anchor cables 2 and located outside the large-span frame beam 1. The adjustable anchors anchor both ends of the prestressed anchor cables 2 onto the large-span frame beam 1, forming a conventional form of prestressed anchor cable usage for a large-span frame beam. However, in order to maintain the required applied prestress during long-term use of the large-span frame beam, the adjustable anchors are also used to adjust the amount of prestress applied by the prestressed anchor cables 2 to the large-span frame beam 1. This allows for adjustment if the prestress applied by the prestressed anchor cables 2 changes during long-term use of the large-span frame beam, thus maintaining the required range of applied prestress and ensuring the long-term stability of the large-span frame beam. The adjustable anchor includes a bottom bracket structure and an anchorage limiting body 3. The bottom bracket structure abuts against the outside of the large-span frame beam 1 and supports the anchorage limiting body 3. An adjusting bolt 4 is installed on the anchorage limiting body 3. The adjusting bolt 4 is used to pull the prestressed anchor cable 2 and fix it on the anchorage limiting body 3. Specifically, the adjusting bolt 4 fixes the end of the prestressed anchor cable 2 on the anchorage limiting body 3. When the prestressed anchor cable 2 is tightened, prestress is generated on the large-span frame beam. At the same time, the prestress also acts on the anchorage limiting body 3 and is transmitted to the bracket structure. Therefore, the anchorage position of the prestressed anchor cable 2 is stably supported by the stable structure of the bracket structure to ensure that the anchorage of the prestressed anchor cable 2 at the end of the large-span frame beam 1 is more stable and will not cause local deformation or cracking of the concrete surface of the large-span frame beam 1 due to problems with the anchor structure. The threaded engagement between the adjusting bolt 4 and the anchoring limiter 3 is used to adjust the magnitude of the prestress applied by the prestressed anchor cable 2 to the large-span frame beam 1. The threaded engagement allows the adjusting bolt 4 to move axially, thereby adjusting the tension of the prestressed anchor cable 2 and thus adjusting the applied prestress.

[0018] Furthermore, the bracket structure includes a supporting base plate 5, which is embedded in the large-span frame beam 1. Side support plates 6 extending outward from the large-span frame beam 1 are vertically arranged at both ends of the supporting base plate 5. An arc-shaped plate 7 is arranged between the two sets of side support plates 6. The outer arc surface of the arc-shaped plate 7 faces the supporting base plate 5. Multiple support ribs 8 are connected between the outer arc surface of the arc-shaped plate 7 and the supporting base plate 5.

[0019] Specifically, the arc-shaped plate 7 between the supporting base plate 5 and the two sets of side support plates 6 is supported by multiple support ribs 8 to transmit and distribute pressure, forming a saddle-shaped bracket that can stably support the anchoring limit body 3. This not only stabilizes the supporting structure but also expands the stress surface on the large-span frame beam 1, avoiding local deformation and cracking caused by excessive local stress on the large-span frame beam 1.

[0020] Furthermore, the anchoring limit body 3 is supported at both ends by two adjacent sets of bracket structures, so that the support of the bracket structure on the anchoring limit body 3 is more stable. There is space between the two sets of bracket structures for the prestressed anchor cable 2 to pass through, so as to arrange the prestressed anchor cable 2.

[0021] Furthermore, the anchoring limiter 3 is a cylindrical structure used to match the arc plate 7 and form surface contact, thereby increasing the support area, dispersing the force, and making the support more stable.

[0022] Furthermore, the adjusting bolt 4 is a bolt structure with external threads and an axial through hole 9 for the prestressed anchor cable 2 to pass through. The center of the side of the anchoring limit body 3 is provided with a threaded hole 10 that is threaded to the adjusting bolt 4. The end of the prestressed anchor cable 2 passing through the through hole 9 is fixed by a clamp 11. This is equivalent to the prestressed anchor cable 2 being connected to the adjusting bolt 4 by the clamp 11. When the adjusting bolt 4 is rotated, the threaded engagement causes the adjusting bolt 4 to move axially, thereby adjusting the tension of the prestressed anchor cable 2 to adjust the prestress to the required range.

[0023] Furthermore, a cap 12 is coaxially arranged on one end of the adjusting bolt 4 opposite to the anchoring limit body 3. Two sets of nut blocks 13 are symmetrically arranged on both sides of the cap 12. A threaded push rod 14 is provided on the nut block 13 and threadedly engaged with it. A limiting groove 15 is opened on the side surface of the anchoring limit body 3 so that the end of the threaded push rod 14 can extend into it.

[0024] Specifically, in order to prevent changes in prestress caused by loosening or other issues during long-term use after the adjusting bolt 4 is rotated, the threaded rod 14 is tightened into the limiting groove 15 of the anchoring limiting body 3 through the threaded engagement between the threaded rod 14 and the nut block 13, so as to support the adjusting bolt 4 and prevent its circumferential movement from causing the tension on the prestressed anchor cable 2 to loosen.

[0025] In summary, in the prestressed anchor cable structure of the large-span frame beam of this device, the anchor cables are anchored on the large-span frame beam using adjustable anchors, which can adjust the prestress to meet the long-term prestress requirements of the large-span frame beam, thereby ensuring the long-term stability of the large-span frame beam support.

[0026] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A prestressed anchor cable structure for a long-span frame beam, comprising a long-span frame beam (1), characterized in that, Prestressed anchor cables (2) are pre-embedded in the long length direction of the large-span frame beam (1). Adjustable anchors are provided at both ends of the prestressed anchor cables (2) and at positions outside the large-span frame beam (1). The adjustable anchors are used to adjust the magnitude of the prestress applied by the prestressed anchor cables (2) to the large-span frame beam (1). The adjustable anchor includes a bottom bracket structure and an anchoring limiting body (3). The bottom bracket structure abuts against the outside of the large-span frame beam (1) and supports the anchoring limiting body (3). An adjusting bolt (4) is provided on the anchoring limiting body (3). The adjusting bolt (4) is used to pull the prestressed anchor cable (2) and fix it on the anchoring limiting body (3). The adjusting bolt (4) and the anchoring limiter (3) are threaded together to adjust the magnitude of the prestress applied by the prestressed anchor cable (2) to the large-span frame beam (1).

2. The prestressed anchor cable structure for a large-span frame beam according to claim 1, characterized in that, The bracket structure includes a support base plate (5), which is embedded in the large-span frame beam (1). The two ends of the support base plate (5) are vertically provided with side support plates (6) extending outward from the large-span frame beam (1). An arc plate (7) is provided between the two sets of side support plates (6). The outer arc surface of the arc plate (7) is set towards the support base plate (5). Multiple support ribs (8) are connected between the outer arc surface of the arc plate (7) and the support base plate (5).

3. The prestressed anchor cable structure for a large-span frame beam according to claim 2, characterized in that, The anchoring limit body (3) is supported at both ends by two sets of bracket structures arranged adjacent to each other, and a space is left between the two sets of bracket structures for the prestressed anchor cable (2) to pass through.

4. The prestressed anchor cable structure for a large-span frame beam according to claim 3, characterized in that, The anchoring limiter (3) is a cylindrical structure used to match the arc plate (7) and form surface contact.

5. The prestressed anchor cable structure for a large-span frame beam according to claim 1, characterized in that, The adjusting bolt (4) is a bolt structure with external threads and an axial through hole (9) for the prestressed anchor cable (2) to pass through. The anchoring limit body (3) has a threaded hole (10) at the center of its side surface that is threaded to the adjusting bolt (4). The end of the prestressed anchor cable (2) passing through the through hole (9) is fixed by setting a clip (11).

6. The prestressed anchor cable structure for a large-span frame beam according to claim 1, characterized in that, The adjusting bolt (4) is coaxially arranged with a cap (12) opposite to one end of the anchoring limiting body (3). Two sets of nut blocks (13) are symmetrically arranged on both sides of the cap (12). A threaded push rod (14) is provided on the nut block (13) and is threadedly engaged with it. A limiting groove (15) is opened on the side surface of the anchoring limiting body (3) so that the end of the threaded push rod (14) can be inserted.

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