Vertical abutted seam connecting structure of mixed tower wind power prefabricated tower tube duct pieces

Abstract

The utility model relates to the technical field of tower tube construction, in particular to a mixed tower wind power prefabricated tower tube duct piece vertical abutted seam connecting structure which comprises a transverse corrugated pipe, an embedded sleeve and a connecting joint bar, the transverse corrugated pipe is transversely embedded in one end of a duct piece, the embedded sleeve is transversely embedded in the other end of the duct piece, and the connecting joint bar is connected with the transverse corrugated pipe. The connecting joint bar comprises a screw portion and a pier head portion, the diameter of the pier head portion is larger than that of the screw portion, the screw portion is in threaded connection with the embedded sleeve, and the pier head portion is inserted into the transverse corrugated pipe. One end of the connecting joint bar is connected through the screw thread, and the other end of the connecting joint bar is anchored through the pier head, so that the connecting strength and the anti-drawing performance are improved, the operation convenience of constructors is improved, and the construction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of tower construction, and in particular to a vertical splicing connection structure for prefabricated tower segments of hybrid wind power. Background Technology

[0002] With the nation's promotion of new energy, concrete towers possess inherent durability (corrosion resistance), maintaining their performance even under extreme conditions. They also boast low maintenance costs and lower investment costs compared to pure steel towers, resulting in better power generation. In particular, hybrid towers combining concrete and steel structures are gaining an increasingly significant share in the ultra-high-tower wind power market, demonstrating their growing advantages. Hybrid wind turbine tower structures not only facilitate transportation and rapid assembly but also reduce initial and maintenance costs. They effectively enhance the stability and rigidity of the hybrid tower structure under stress, thus extending its service life.

[0003] Since each section of the hybrid tower is approximately 4 meters high and 300 mm thick, with a larger outer diameter at the bottom, it consists of two or more C-shaped segments connected by vertical reinforcement bars and grouted to form O-shaped segments. A 20 mm wide gap is typically left in the vertical joints. How to better enhance the connection effect and organically integrate the segments through grouting is a key research area in this field. Utility Model Content

[0004] In order to better enhance the connection effect between C-shaped segments and form an organic whole through grouting, this utility model provides a vertical splicing connection structure for prefabricated tower segments of hybrid wind power.

[0005] The present invention provides a vertical splicing connection structure for prefabricated tower segments of hybrid wind power, which adopts the following technical solution:

[0006] A vertical splicing connection structure for prefabricated tower segments of hybrid wind power includes a corrugated pipe, an embedded sleeve, and connecting ribs. The corrugated pipe is embedded laterally in one end of the segment, and the embedded sleeve is embedded laterally in the other end of the segment. The connecting rib includes a threaded part and a pier head. The diameter of the pier head is larger than the diameter of the threaded part. The threaded part is threadedly connected to the embedded sleeve, and the pier head is inserted into the corrugated pipe.

[0007] By adopting the above technical solution, one end of the connecting bar is connected by threaded connection and the other end is anchored at the pier head, which not only improves the connection strength and pull-out resistance, but also improves the convenience of operation for construction personnel, thereby improving construction efficiency.

[0008] Optionally, anchoring steel bars are fixedly connected to the pre-embedded sleeve, and the anchoring steel bars are connected to the steel mesh inside the segment.

[0009] By adopting the above technical solution, the stability of the pre-embedded sleeve within the tunnel lining segment has been improved.

[0010] Optionally, multiple recessed keyways are provided on the end face of the tube segment along the height direction.

[0011] By adopting the above technical solution, the end face of the segment is provided with a concave keyway. On the one hand, the concave keyway increases the roughness of the contact surface and improves the seepage prevention effect. On the other hand, it helps to form an interlocking "toothed joint" structure after grouting, which is densely filled and interlocked, and has strong overall connection.

[0012] Optionally, the concave keyway is frustum-shaped.

[0013] By adopting the above technical solution, it is easier to guide the slurry in.

[0014] Optionally, drainage grooves are provided on the end face of the tube segment at positions corresponding to the corrugated pipe and the pre-embedded sleeve.

[0015] By adopting the above technical solution, a drainage groove is set at the end of the corrugated pipe and the pre-embedded sleeve to facilitate the smooth flow of grouting material into the filling process and reduce resistance.

[0016] Optionally, the drainage channel is truncated cone-shaped.

[0017] By adopting the above technical solutions, the guiding effect on the slurry can be further improved. Attached Figure Description

[0018] Figure 1 This is a perspective view of the tube segment according to an embodiment of the present utility model.

[0019] Figure 2 This is a top view of the tube segment according to an embodiment of the present invention.

[0020] Figure 3 yes Figure 2 A schematic diagram of the AA direction.

[0021] Figure 4 yes Figure 2 A schematic diagram of the BB direction.

[0022] Figure 5 This is an assembly diagram of the pre-embedded sleeve, connecting ribs, and transverse corrugated pipe according to an embodiment of this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. Segment; 2. Vertical corrugated pipe; 3. Horizontal corrugated pipe; 4. Embedded sleeve; 40. Anchoring reinforcement; 5. Connecting dowel; 50. Screw rod; 51. Pier head; 6. Keyway; 7. Drainage channel. Detailed Implementation

[0024] The following combination Figures 1-5 The present invention will be described in further detail below.

[0025] This utility model discloses a vertical splicing connection structure for prefabricated tower segments of hybrid wind power systems. (Refer to...) Figures 1-5 Two C-shaped segments 1 can be spliced ​​together to form an O-shaped tower tube section. Multiple sets of vertical corrugated pipes 2 are pre-embedded in the tube segment 1 along the height direction. The vertical corrugated pipes 2 are used to insert prestressed steel strands later. The vertical splicing connection structure of the prefabricated tower tube segments of the mixed tower wind power includes a horizontal corrugated pipe 3, a pre-embedded sleeve 4, and a connecting rib 5.

[0026] A transverse corrugated pipe 3 is pre-embedded laterally at one end of the pipe segment 1. Multiple transverse corrugated pipes 3 are evenly arranged along the height direction of the pipe segment 1. The transverse corrugated pipes 3 are Φ90 metal corrugated pipes. A pre-embedded sleeve 4 is pre-embedded laterally at the other end of the pipe segment 1. Multiple pre-embedded sleeves 4 are evenly arranged along the height direction of the pipe segment 1. The pre-embedded sleeves 4 correspond one-to-one with the transverse corrugated pipes 3 in height. The pre-embedded sleeves 4 are provided with internal threads. The pre-embedded sleeves 4 are connected to the steel mesh of the pipe segment 1 through anchoring steel bars 40.

[0027] The connecting rod 5 includes a threaded rod part 50 and a pier head 51. The threaded rod part 50 is made of HRB500E hot-rolled steel bar with a diameter of 25mm. The pier head 51 is cylindrical and coaxially fixed to one end of the threaded rod part 50. The diameter of the pier head 51 is larger than the diameter of the threaded rod part 50. The threaded rod part 50 is used to be threadedly connected to the pre-embedded sleeve 4, and the pier head 51 is used to be inserted into the transverse corrugated pipe 3.

[0028] Multiple concave keyways 6 are provided along the height direction on the end face of segment 1. The concave keyways 6 are truncated pyramidal in shape to facilitate the smooth flow of grout, thereby increasing the roughness of the contact surface, improving the filling density and seepage prevention effect. Drainage channels 7 are provided on the end face of segment 1 at the positions corresponding to the corrugated pipe 3 and the pre-embedded sleeve 4. The drainage channels 7 are 10mm deep and are truncated pyramidal in shape to facilitate the flow of grout, which is convenient for secondary grouting and filling.

[0029] The implementation principle of the vertical splicing connection structure of the prefabricated tower segment of the hybrid wind power in this embodiment is as follows: two segments 1 are hoisted onto the adjusted assembly platform respectively, the two segments 1 are initially joined together and a certain gap is reserved to facilitate the installation of the connecting rod 5; the screw part 50 of the connecting rod 5 is screwed into the embedded sleeve 4 with a torque wrench and tightened, the torque is generally 80-120 N·m; sealing strips are glued to the inner and outer sides of the end face of the segment 1, and the sealing strips are made of neoprene foam rubber and are firmly glued.

[0030] Gradually bring the two segments 1 together, and after adjustment, leave a 20mm gap. Use a fastening device to fix the two segments 1. The fastening device can be a fastening strap or a steel wire rope in conjunction with a hand winch. The minimum load-bearing capacity of the fastening device should be greater than 2.5t. Appropriate prestress should be applied before grouting, and the bottom fastening strap should preferably be a steel wire rope. After sealing both sides of the gap with the sealing strip, start grouting from the bottom, filling the gap between segments 1, the concave keyway 6 and the drainage groove 7, until the grout overflows from the top and there are no air bubbles.

[0031] One end of the connecting rod 5 is connected by a threaded connection, and the other end is anchored at the pier head. This not only improves the connection strength and pull-out resistance, but also improves the convenience of operation for construction personnel, thereby improving construction efficiency. The end face of the segment 1 is provided with symmetrical concave keyways 6. The concave keyways 6 increase the roughness of the contact surface and improve the seepage prevention effect. On the other hand, they help to form an interlocking "toothed joint" structure after grouting, which is densely filled and interlocked, and has strong overall connection. The ends of the transverse corrugated pipe 3 and the pre-embedded sleeve 4 are provided with frustum-shaped drainage channels 7, which facilitates the smooth flow of grout into the filling and reduces resistance.

[0032] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A vertical splicing connection structure for prefabricated tower segments of hybrid wind power systems, characterized in that: It includes a corrugated pipe (3), a pre-embedded sleeve (4) and a connecting rod (5). The corrugated pipe (3) is pre-embedded horizontally in one end of the pipe segment (1), and the pre-embedded sleeve (4) is pre-embedded horizontally in the other end of the pipe segment (1). The connecting rod (5) includes a screw part (50) and a pier head (51). The diameter of the pier head (51) is larger than the diameter of the screw part (50). The screw part (50) is threadedly connected to the pre-embedded sleeve (4), and the pier head (51) is inserted into the corrugated pipe (3).

2. The vertical splicing connection structure of prefabricated tower segments for hybrid wind power as described in claim 1, characterized in that: Anchor steel bars (40) are fixedly connected to the pre-embedded sleeve (4), and the anchor steel bars (40) are connected to the steel mesh inside the pipe segment (1).

3. The vertical splicing connection structure of prefabricated tower segments for hybrid wind power according to claim 1, characterized in that: Multiple recessed keyways (6) are provided on the end face of the tube segment (1) along the height direction.

4. The vertical splicing connection structure of prefabricated tower segments for hybrid wind power according to claim 3, characterized in that: The concave keyway (6) is frustum-shaped.

5. The vertical splicing connection structure of prefabricated tower segments for hybrid wind power according to claim 1, characterized in that: Drainage grooves (7) are provided on the end face of the tube segment (1) at the positions corresponding to the transverse corrugated pipe (3) and the pre-embedded sleeve (4).

6. The vertical splicing connection structure of prefabricated tower segments for hybrid wind power as described in claim 5, characterized in that: The drainage channel (7) is truncated cone-shaped.

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