A concrete-steel hybrid tower transition section connection device

Abstract

The present invention relates to the technical field of steel hybrid towers, and discloses a concrete-steel hybrid tower transition section connection device, comprising: a concrete tower section, a steel tower section, and a transition section, wherein the steel tower section is butt-jointed and installed on the top of the concrete tower section, and the transition section is sleeved and installed on the outside of the concrete tower section and the steel tower section, and a plurality of groups of anchor rods are provided inside the concrete tower section and the steel tower section, and the anchor rods are connected inside the concrete tower section and the steel tower section to anchor the two. The present invention realizes dual-path force optimization by having the anchor rods bear axial tension, and the connecting rods and supporting elastic parts provide radial constraints; disperse stress at the joints to avoid local cracking; have deformation self-adaptation capability, and the elastic support of the supporting elastic parts allows micro-deformation of the concrete and steel tower sections due to temperature and load, reducing the risk of interface peeling; and convenient construction, with the outer sleeve of the transition section and the pre-installed internal anchor rods matching, reducing the on-site high-altitude docking accuracy requirements and improving installation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of steel hybrid towers, and in particular to a concrete-steel hybrid tower transition section connection device. Background Art

[0002] Steel hybrid towers, that is, hybrid wind turbine towers composed of steel structure and concrete structure, not only meet the requirements of high power generation and low cost, but are also extremely reliable and more adaptable to areas with complex wind conditions, and have a wide range of applications.

[0003] The prior art discloses a concrete-steel hybrid tower transition section connection device, application number CN202310914102.3, which includes an upper steel cylinder, a prestressed cable, and a first connecting plate fixed to the inner wall of the lower end of the steel tower section. The upper end of the upper steel cylinder is provided with a second connecting plate, which is fixedly connected to the first connecting plate via a fastening assembly. The lower end of the upper steel cylinder is provided with a third connecting plate, which is provided at the upper end of the concrete tower section. The upper end of the prestressed cable passes through the second connecting plate and the first connecting plate and is fixed to the upper surface of the first connecting plate via an anchor. This invention can enhance the connection strength between the steel tower section, improve the stress-bearing performance of the concrete tower section, and improve the overall reliability and stability of the structure. However, the prior art, especially this solution, still has the following problems:

[0004] In this solution, the transition section structure is anchored by combining prestressed cables and connecting plates. However, this anchoring method only provides a certain anchoring reinforcement effect in the axial direction of the entire tower. In fact, at the connection position of the concrete tower section and the steel tower section, the radial stress also needs to be considered. For this reason, we need to provide a concrete-steel hybrid tower transition section connection device. Summary of the Invention

[0005] The purpose of the present invention is to provide a technical solution to achieve dual-path force optimization by having anchor rods bear axial tension, and connecting rods and supporting elastic parts provide radial constraints; disperse stress at joints to avoid local cracking, so as to solve the problems in the existing technology raised in the above background technology.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A concrete-steel hybrid tower transition section connection device comprises: a concrete tower section, a steel tower section, and a transition section, wherein the steel tower section is butt-jointed and mounted on the top of the concrete tower section, and the transition section is sleeved and mounted on the exterior of the concrete tower section and the steel tower section, wherein a plurality of groups of anchor rods are disposed inside the concrete tower section and the steel tower section, and the anchor rods are connected inside the concrete tower section and the steel tower section to anchor the two.

[0008] Several groups of tower section connectors are provided on the outside of the transition section, and connecting rods are connected to both ends of the tower section connectors. The connecting rod at one end passes through the concrete tower section and is connected to the anchor rod, and the connecting rod at the other end passes through the steel tower section and is connected to the anchor rod. The connecting rod and the anchor rod are connected by a docking rod, and supporting elastic parts are provided on the docking rod. Several groups of supporting elastic parts are respectively supported on the inner walls of the concrete tower section and the steel tower section.

[0009] Preferably, the transition section is configured as a detachable steel cylindrical structure, and an annular reinforcement rib is provided in the middle portion of the transition section, and the annular reinforcement rib is provided at the butt joint between the concrete tower section and the steel tower section.

[0010] Preferably, the anchor rods are grouped in pairs, and several groups of locking cross columns are connected between the two groups of anchor rods. The docking rods are connected to the locking cross columns, and the several groups of locking cross columns are distributed on the inner sides of the concrete tower section and the steel tower section.

[0011] Preferably, the docking rod is provided with a sleeve position for supporting an elastic member, one end of the supporting elastic member is tightly arranged on the docking rod, and one end of the supporting elastic member is tightly arranged on the inner wall of the concrete tower section or the steel tower section; the supporting elastic member exerts a pressing force on both the concrete tower section and the steel tower section to push the concrete tower section or the steel tower section toward the transition section.

[0012] Preferably, the ends of the connecting rods at both ends of the tower section connector are connected with perforated rods, the perforated rod at one end of the connecting rod passes through the transition section and the steel tower section to be connected to the docking rod, and the perforated rod at the other end of the connecting rod passes through the steel tower extension section and the steel tower section to be connected to the docking rod.

[0013] Preferably, a positioning block is provided on the outside of the transition section of the connecting rod, and the positioning block is fitted to the outer surface of the transition section. When the supporting elastic member performs elastic support inside the tower, the positioning block correspondingly supports the outer surface of the transition section.

[0014] Preferably, the supporting elastic member is configured as a hydraulic buffer.

[0015] Preferably, the supporting elastic member is configured as a supporting spring, which is supported between the anchor rod and the tower section, and can provide supporting force from the inside for the concrete tower section and the steel tower section, thereby enabling the concrete tower section and the steel tower section to have a better docking and matching effect with the transition section.

[0016] Preferably, the bottom of the anchor rod is anchored to the ground, and the side of the anchor rod is connected to a plurality of groups of reinforcement columns, and the anchor rod is connected to the inner walls of the concrete tower section and the steel tower section through the reinforcement columns.

[0017] Preferably, the interior of the steel tower section is further connected to a steel tower extension section, the inner wall of the steel tower section is provided with a docking piece docking with the steel tower extension section, and the anchor rod is connected to the inner wall of the steel tower extension section through a reinforcement column.

[0018] Technical effects and advantages of the present invention: Compared with the prior art, the concrete-steel hybrid tower transition section connection device proposed in the present invention has the following advantages:

[0019] The present invention realizes dual-path force optimization by having anchor rods bear axial tension, and the connecting rods and supporting elastic parts provide radial constraints; the stress at the joints is dispersed to avoid local cracking; the deformation adaptability, the elastic support of the supporting elastic parts allows the concrete and steel tower sections to be slightly deformed due to temperature and load, reducing the risk of interface peeling; the construction is convenient, the external sleeve of the transition section is matched with the pre-installed internal anchor rods, reducing the on-site high-altitude docking accuracy requirements and improving installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the concrete-steel hybrid tower in the present invention;

[0021] Figure 2 This is a front structural diagram of the concrete-steel hybrid tower in the present invention;

[0022] Figure 3 Schematic diagram of the top view of the concrete-steel hybrid tower in the present invention;

[0023] Figure 4 This is a schematic structural diagram of the concrete-steel hybrid tower transition section connection device of the present invention;

[0024] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 6 This is a schematic diagram of the internal cross-sectional structure of the concrete-steel hybrid tower transition section connection device of the present invention;

[0026] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure at point B in the middle.

[0027] In the picture:

[0028] 11. Concrete tower section; 12. Steel tower section; 13. Transition section; 14. Steel tower extension section; 15. Annular reinforcement ribs; 21. Tower section connector; 22. Connecting rod; 23. Anchor rod; 24. Reinforcement column; 25. Locking cross column; 26. Docking rod; 27. Support elastic member; 28. Perforated rod; 29. ​​Positioning block. DETAILED DESCRIPTION

[0029] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed solely to enable those skilled in the art to better understand and implement the subject matter described herein, and that the functions and arrangements of the elements discussed may be varied without departing from the scope of this specification. Various examples may omit, substitute, or add various processes or components as needed. Furthermore, features described for some examples may be combined in other examples.

[0030] The invention provides Figures 1 to 7 As shown, a concrete-steel hybrid tower transition section connection device includes:

[0031] The concrete tower section 11, the steel tower section 12 and the transition section 13 are connected. The steel tower section 12 is butt-jointed with the top of the concrete tower section 11. The transition section 13 is sleeved and mounted on the outside of the concrete tower section 11 and the steel tower section 12. Several groups of anchor rods 23 are provided inside the concrete tower section 11 and the steel tower section 12. The anchor rods 23 are connected to the inside of the concrete tower section 11 and the steel tower section 12 to anchor the two.

[0032] Several groups of tower section connectors 21 are provided on the outside of the transition section 13. Connecting rods 22 are connected to both ends of the tower section connectors 21. The connecting rod 22 at one end passes through the concrete tower section 11 and is connected to the anchor rod 23, and the connecting rod 22 at the other end passes through the steel tower section 12 and is connected to the anchor rod 23. The connecting rod 22 and the anchor rod 23 are connected by a docking rod 26. The docking rod 26 is provided with a supporting elastic member 27. Several groups of supporting elastic members 27 are respectively supported on the inner walls of the concrete tower section 11 and the steel tower section 12.

[0033] Working principle: Internal and external anchoring are linked, and the concrete tower section 11 and the steel tower section 12 are rigidly anchored through the anchor rods 23 inside the tower to form a longitudinal force-bearing main skeleton; the transition section 13 is wrapped around the joint of the two tower sections on the outside of the tower, and the external tower section connector 21 and the internal anchor rod 23 are tied together by the connecting rod 22 to achieve the closure of the internal and external force transmission path; elastic dynamic compensation, the supporting elastic part 27 is installed between the docking rod 26 and the inner wall of the tower section, and the elastic preload force is continuously pressed against the inner wall of the tower section, adaptively compensating for the shrinkage of concrete or the deformation of the steel tower section 12, and maintaining a close fit between the transition section 13 and the two tower sections. Dual-path force optimization: the anchor rod 23 bears the axial tension, the connecting rod 22 and the supporting elastic part 27 provide radial constraints, disperse the stress at the joint and avoid local cracking; deformation adaptability: the elastic support of the supporting elastic part 27 allows the concrete and steel tower section 12 to be slightly deformed due to temperature and load, reducing the risk of interface peeling; construction convenience: the external sleeve of the transition section 13 is pre-assembled with the internal anchor rod 23, reducing the on-site high-altitude docking accuracy requirements and improving installation efficiency.

[0034] like Figure 5 and Figure 7 As shown, the transition section 13 is configured as a detachable steel cylindrical structure, and the middle part of the transition section 13 is provided with an annular reinforcement rib 15, which is arranged at the butt joint position of the concrete tower section 11 and the steel tower section 12; the setting of the annular reinforcement rib 15 makes the transition section 13 have stronger structural strength.

[0035] like Figures 3 to 5 As shown, the anchor rods 23 are grouped in pairs, with several groups of locking crossbars 25 connected between the two groups of anchor rods 23. The docking rods 26 are connected to the locking crossbars 25. The groups of locking crossbars 25 are distributed inside the concrete tower section 11 and the steel tower section 12. In actual use, the two groups of anchor rods 23 and the groups of locking crossbars 25 form a ladder-like structure that allows workers to climb inside the tower using the anchor rods 23, that is, it serves as a climbing ladder.

[0036] like Figure 5 and Figure 7 As shown, the docking rod 26 is provided with a mounting position for a supporting elastic member 27. One end of the supporting elastic member 27 is tightly mounted on the docking rod 26, and one end of the supporting elastic member 27 is tightly mounted on the inner wall of the concrete tower section 11 or the steel tower section 12. The supporting elastic member 27 exerts a pressing force on both the concrete tower section 11 and the steel tower section 12, pushing the concrete tower section 11 or the steel tower section 12 toward the transition section 13, thereby achieving a stable and long-lasting docking effect between the concrete tower section 11 and the steel tower section 12 at the tower transition section 13.

[0037] like Figure 7 As shown, the ends of the connecting rods 22 at both ends of the tower segment connector 21 are connected to perforated rods 28. The perforated rod 28 at the end of one connecting rod 22 passes through the transition section 13 and the steel tower segment 12 to connect to the docking rod 26, while the perforated rod 28 at the end of the other connecting rod 22 passes through the steel tower extension section 14 and the steel tower segment 12 to connect to the docking rod 26. Here, the tower segment connector 21 and the connecting rods 22 at both ends have the effect of tensioning and fastening. In conjunction with the transition section 13, a high-strength transitional docking can be achieved between the concrete tower segment 11 and the steel tower segment 12.

[0038] Furthermore, a positioning block 29 is provided on the outside of the transition section 13 of the connecting rod 22, and the positioning block 29 is in contact with the outer surface of the transition section 13. When the supporting elastic member 27 performs elastic support inside the tower, the positioning block 29 supports the outer surface of the transition section 13 accordingly.

[0039] The supporting elastic member 27 is selected from a supporting spring or a hydraulic buffer: in conventional wind load scenarios, the supporting elastic member 27 is set to a coil spring, and the spring stiffness coefficient is generally designed to be in the range of 20-50kN / mm according to the tower diameter and height matching. Two-way adjustment nuts are provided at both ends of the docking rod 26, and the spring is compressed to the target preload force by rotating the nuts; in scenarios with high seismic resistance requirements such as earthquake zones or typhoon-prone areas, the supporting elastic member 27 is set to a hydraulic buffer with an adjustable damping ratio.

[0040] Specifically, the supporting elastic member 27 is configured as a supporting spring, and the supporting elastic member 27 is supported between the anchor rod 23 and the tower section, and can provide supporting force from the inside for the concrete tower section 11 and the steel tower section 12, so that the concrete tower section 11 and the steel tower section 12 have a better docking and matching effect with the transition section 13.

[0041] like Figure 3 and Figure 4 As shown, the bottom of the anchor rod 23 is anchored to the ground, and the side of the anchor rod 23 is connected to a plurality of groups of reinforcement columns 24 . The anchor rod 23 is connected to the inner walls of the concrete tower section 11 and the steel tower section 12 through the reinforcement columns 24 .

[0042] like Figure 4 and Figure 6 As shown, the interior of the steel tower section 12 is further connected to a steel tower extension section 14 , the inner wall of the steel tower section 12 is provided with a docking piece for docking with the steel tower extension section 14 , and the anchor rod 23 is connected to the inner wall of the steel tower extension section 14 through a reinforcement column 24 .

[0043] In summary, the present invention has the following comprehensive effects: the transition section 13 is structurally strengthened, the detachable steel transition section 13 is sleeved on the outside of the concrete tower section 11 and the steel tower section 12, and the joint between the two is directly covered by the annular reinforcement rib 15 in the middle, thereby enhancing the bending and shear strength of the docking area; the anchor rods 23 are dual-functionally integrated, the anchor rods 23 are grouped in pairs, and a ladder-like structure is formed by locking the cross column 25, which serves as an internal anchor for the concrete and steel tower sections 12 and provides a climbing channel, saving the internal space of the tower; elastic support and dynamic leveling, supporting the elastic member 27 (spring or hydraulic buffer) is installed on the docking rod 26, and through pre-tightening force, the inner wall of the concrete tower section 11 and the steel tower section 12 are pressed against the transition section 13, adaptively compensating for material deformation (such as concrete shrinkage, thermal expansion and contraction of steel), and maintaining close contact between the docking surfaces; the inside and outside are fastened together, and the connecting rod 22 passes through the tower section through the perforated rod 28 and is connected to the anchor rod 23, cooperating with the external tower section connector 21 to form a tensioning force; at the same time, the positioning block 29 fits the outer surface of the transition section 13, forming an internal and external bidirectional clamping with the internal elastic support, thereby suppressing displacement between the tower sections. Modular expansion design, the steel tower extension section 14 is connected to the steel tower section 12 through the inner wall docking piece, and the anchor rod 23 extends to the inner wall of the extension section through the reinforcement column 24, realizing flexible expansion of the tower height;

[0044] To enhance structural stability, the annular reinforcement ribs 15 of the transition section 13 and the internal and external bidirectional supports (support elastic members 27 in conjunction with positioning blocks 29) significantly improve the fatigue resistance of the joint area and reduce the risk of cracking under wind loads or earthquakes. Installation and maintenance are simplified, with the detachable transition section 13 design facilitating repair or replacement. The anchor rod 23 has an integrated climbing function, reducing the cost of additional ladder installation. Adaptive deformation compensation: the support elastic member 27 dynamically adjusts through preload force to offset the deformation difference between concrete and steel, avoiding stress concentration on the interface due to different material properties. High adaptability: the support elastic member 27 can use either springs (low cost, conventional wind load) or hydraulic buffers (high damping, seismic requirements) to adapt to different environmental conditions (such as typhoon areas or earthquake zones). Scalability and economy: the steel tower extension section 14 and modular anchor rod 23 design support flexible adjustment of tower height, reducing customization costs. The combination of anchor rod 23 and reinforcement column 24 improves material utilization and reduces overall weight.

[0045] The above describes the embodiments of the present invention, but the present invention is not limited to the above specific implementation methods. The above specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms under the guidance of the present invention, all of which are protected by the present invention.

Claims

1. A concrete-steel hybrid tower transition section connection device, characterized in that: include: A concrete tower section (11), a steel tower section (12) and a transition section (13); the steel tower section (12) is butt-jointed and mounted on the top of the concrete tower section (11); the transition section (13) is sleeved and mounted on the outside of the concrete tower section (11) and the steel tower section (12); a plurality of groups of anchor rods (23) are provided inside the concrete tower section (11) and the steel tower section (12); the anchor rods (23) are connected inside the concrete tower section (11) and the steel tower section (12) to anchor the two; Several groups of tower section connectors (21) are provided outside the transition section (13), and connecting rods (22) are connected to both ends of the tower section connectors (21). The connecting rod (22) at one end passes through the concrete tower section (11) and is connected to the anchor rod (23), and the connecting rod (22) at the other end passes through the steel tower section (12) and is connected to the anchor rod (23). The connecting rod (22) and the anchor rod (23) are connected by a docking rod (26), and the docking rod (26) is provided with a supporting elastic member (27). Several groups of supporting elastic members (27) are supported on the inner walls of the concrete tower section (11) and the steel tower section (12), respectively.

2. The concrete-steel hybrid tower transition section connection device according to claim 1, characterized in that: The transition section (13) is configured as a detachable steel cylindrical structure. An annular reinforcement rib (15) is provided in the middle portion of the transition section (13). The annular reinforcement rib (15) is provided at the butt joint between the concrete tower section (11) and the steel tower section (12).

3. The concrete-steel hybrid tower transition section connection device according to claim 2, characterized in that: The anchor rods (23) are grouped in pairs, and a plurality of locking cross columns (25) are connected between the two groups of anchor rods (23). The docking rods (26) are connected to the locking cross columns (25). The plurality of locking cross columns (25) are distributed at positions inside the concrete tower section (11) and the steel tower section (12).

4. The concrete-steel hybrid tower transition section connection device according to claim 3, characterized in that: The docking rod (26) is provided with a sleeve position for supporting an elastic member (27), one end of the supporting elastic member (27) is tightly mounted on the docking rod (26), and one end of the supporting elastic member (27) is tightly mounted on the inner wall of the concrete tower section (11) or the steel tower section (12); the supporting elastic member (27) exerts a pressing force on both the concrete tower section (11) and the steel tower section (12), pushing the concrete tower section (11) or the steel tower section (12) toward the transition section (13).

5. The concrete-steel hybrid tower transition section connection device according to claim 4, characterized in that: The ends of the connecting rods (22) at both ends of the tower section connector (21) are connected to perforated rods (28), the perforated rod (28) at the end of one connecting rod (22) passes through the transition section (13) and the steel tower section (12) to be connected to the docking rod (26), and the perforated rod (28) at the end of the other connecting rod (22) passes through the steel tower extension section (14) and the steel tower section (12) to be connected to the docking rod (26).

6. The concrete-steel hybrid tower transition section connection device according to claim 5, characterized in that: The connecting rod (22) is provided with a positioning block (29) outside the transition section (13). The positioning block (29) is fitted to the outer surface of the transition section (13). When the supporting elastic member (27) performs elastic support inside the tower, the positioning block (29) correspondingly supports the outer surface of the transition section (13).

7. The concrete-steel hybrid tower transition section connection device according to claim 6, characterized in that: The supporting elastic member (27) is configured as a hydraulic buffer.

8. The concrete-steel hybrid tower transition section connection device according to claim 6, characterized in that: The supporting elastic member (27) is configured as a supporting spring. The supporting elastic member (27) is supported between the anchor rod (23) and the tower section, and can provide a supporting force from the inside for the concrete tower section (11) and the steel tower section (12), thereby achieving a better docking and matching effect between the concrete tower section (11) and the steel tower section (12) and the transition section (13).

9. A concrete-steel hybrid tower transition section connection device according to any one of claims 1 to 8, characterized in that: The bottom of the anchor rod (23) is anchored to the ground, and the side of the anchor rod (23) is connected to a plurality of groups of reinforcement columns (24). The anchor rod (23) is connected to the inner walls of the concrete tower section (11) and the steel tower section (12) through the reinforcement columns (24).

10. The concrete-steel hybrid tower transition section connection device according to claim 9, characterized in that: The interior of the steel tower section (12) is also connected to a steel tower extension section (14); an inner wall of the steel tower section (12) is provided with a docking piece docked with the steel tower extension section (14); and an anchor rod (23) is connected to the inner wall of the steel tower extension section (14) via a reinforcement column (24).

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