Fabricated concrete composite tower tube segment

Abstract

The utility model provides an assembly type concrete composite tower tube segment, which relates to the field of fan tower tubes, and comprises side plates positioned on two sides and end plates positioned at the upper end and the lower end, the side plates and the end plates are made of carbon steel, and the side plates are fixedly connected with the end plates; circumferential connecting holes for circumferential connection are formed in the side plates; the end plate is arc-shaped, and a plurality of tensioning holes are formed in the arc-shaped inner edge of the end plate at the top or the bottom; at least two sets of horizontal ribs are arranged between the side plates on the two sides, the two sets of horizontal ribs are located at the positions close to the arc-shaped inner edge and the arc-shaped outer edge of the duct piece respectively, and a plurality of the two sets of horizontal ribs are arranged in the height direction of the duct piece. At least two sets of vertical ribs are arranged between the end plates at the two ends, the two sets of vertical ribs are located at the positions close to the arc-shaped inner edge and the arc-shaped outer edge of the duct piece respectively, and a plurality of the two sets of vertical ribs are arranged along the arc line of the duct piece. The horizontal ribs are fixedly connected with the vertical ribs, and a plurality of groups of stirrups are arranged between the adjacent vertical ribs; and the rest part is concrete. The cable has the advantages of high tensile strength and high torsional strength.

Description

TECHNICAL FIELD

[0001] The utility model relates to the concrete composite tower drum segment field of wind driven generator, especially a kind of assembled concrete composite tower drum segment. BACKGROUND

[0002] With the increasing demand for clean energy worldwide, wind power generation, as an important renewable energy generation method, has been widely used. According to the calculation, the height of wind turbine tower drum is related to the power generation, and in the central region, the height of tower drum is increased from 100 meters to 140 meters, and the annual power generation can be increased by more than 15%. In order to increase the height of tower drum economically, the structure of assembled concrete composite tower drum is proposed in the prior art, which is constructed by segment assembly. In each segment, it is divided into multiple segments, and each segment is fixedly connected by bending bolt in the circumferential direction. The bending bolt is arranged in the circumferential connecting hole. Each segment is connected by bonding, and prestressed anchor cable is arranged along the axis of the entire concrete composite tower drum. Multiple tension holes are arranged in the upper or lower part of the tension segment at the bottom, and the tension segment at the bottom is spliced by multiple segments, and the tension segment at the top is a full-circle segment. The single size of the segment of the tension segment is large, and the diameter reaches more than 10 meters, and the assembly precision requirement reaches ±1mm, which is extremely difficult to prepare. The quality of the segment of the tension segment affects the safety of the entire concrete composite tower drum. With the increase of extreme weather conditions, the wind speed far exceeds the design wind speed, and the increase of tower height leads to the increase of wind speed, which greatly increases the strength of the segment, especially the tensile and torsional strength, which further increases the preparation difficulty of the segment of the tension segment. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide an assembled concrete composite tower drum segment, which can improve the precision of the segment of the tension segment, and improve the strength of the segment, especially the tensile and torsional strength.

[0004] To solve the above technical problems, the technical scheme of the utility model is as follows: an assembled concrete composite tower drum segment, comprising side plates located at both sides and end plates located at upper and lower ends, the side plates and the end plates are made of carbon steel, and the side plates and the end plates are fixedly connected;

[0005] The side plates are provided with circumferential connecting holes for circumferential connection;

[0006] The end plates are arc-shaped, and multiple tension holes are arranged at the position of the inner edge of the arc-shaped end plate at the top or the bottom;

[0007] At least two groups of horizontal ribs are arranged between the side plates at both sides, and the two groups of horizontal ribs are respectively arranged at the positions close to the inner edge and the outer edge of the segment arc, and the two groups of horizontal ribs are arranged as multiple rods along the height direction of the segment;

[0008] At least two groups of vertical ribs are arranged between the end plates at both ends, and the two groups of vertical ribs are respectively arranged at the inner edge and the outer edge close to the arc of the segmental plate, and the two groups of vertical ribs are arranged as a plurality of vertical ribs along the arc of the segmental plate;

[0009] The horizontal rib is fixedly connected with the vertical rib, and a plurality of hoop ribs are arranged between adjacent vertical ribs;

[0010] The remaining part is concrete.

[0011] In the preferred scheme, positioning reinforcing bars are arranged between the adjacent side plates and the end plates, and are used for fixedly connecting the side plates and the end plates.

[0012] In the preferred scheme, screw holes are arranged on the side plates for passing through the bent bolts;

[0013] The side plate is fixedly connected with the connecting box, and the connecting box is provided with a top surface, a bottom surface and two side surfaces, and two surfaces facing the side plate and the bottom mold surface are open.

[0014] In the preferred scheme, a plurality of pads are arranged on the horizontal rib, and are used for limiting the distance between the horizontal rib and the mold.

[0015] In the preferred scheme, a bending structure is arranged at the end of the horizontal rib, and the bending structure is used for welding connection with the side plate.

[0016] In the preferred scheme, a bending structure is arranged at the end of the vertical rib, and the bending structure is used for welding connection with the end plate.

[0017] In the preferred scheme, a plurality of pins are arranged on the inner side of the side plate, and the free end of the pin is provided with an enlarged head.

[0018] In the preferred scheme, a pressing plate is arranged at the end of the horizontal rib, and the pressing plate is fixedly connected with the side plate.

[0019] In the preferred scheme, the hoop ribs are arranged staggered between the adjacent vertical ribs.

[0020] In the preferred scheme, the concrete is C55 or above cement or UHPC.

[0021] In the preferred scheme, the outer edge of the end plate provided with the tensioning hole protrudes from the inner wall of the segmental plate;

[0022] A tensioning groove for accommodating the outer edge provided with the tensioning hole is arranged on the bottom mold of the mold.

[0023] Compared with the prior art, the assembled concrete composite tower cylinder segmental plate has the following beneficial effects: the external frame structure is adopted, and in particular, the tensioning hole is arranged on the end plate at the inner end, so that the strength and precision of the tensioning segmental plate are ensured. The internal consolidation steel mesh structure is adopted, the tensile and torsional strength of the segmental plate is improved, and the strength of the concrete composite tower cylinder assembled by the segmental plate can cope with more extreme weather changes. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0025] Figure 1 This is a schematic cross-sectional view of the tube segment of this utility model.

[0026] Figure 2 This is a schematic diagram of the side plate and end plate of this utility model and the mold fixing structure.

[0027] Figure 3 This is a front view schematic diagram of the steel reinforcement arrangement structure of the segment of this utility model.

[0028] Figure 4 This is a schematic diagram of the connection structure between the stirrups and vertical bars of this utility model.

[0029] Figure 5 This is a top view of the mold of this utility model.

[0030] Figure 6 This is a front view schematic diagram of the mold of this utility model.

[0031] Figure 7 This is a front view schematic diagram of another preferred structure of the mold of this utility model.

[0032] In the diagram: Segment 1, circumferential connection hole 101, bent bolt 102, tension hole 103, screw hole 104, side plate 105, pressure plate 106, pin 107, end plate 108, horizontal reinforcement 109, vertical reinforcement 110, stirrup 111, pad 112, positioning reinforcement 113, C-clamp 114, connecting box 115, segment mold 2, side mold 201, side mold base 202, side mold screw. 203, side mold base; 204, bottom mold; 205, side mold; 206, positioning step; 207, top mold; 21, top mold surface; 208, top mold grid; 209, top mold screw; 210, bottom mold surface; 211, bottom mold grid; 212, support seat; 213, tensioning groove; 214, isothermal plate; 3, temperature guiding plate; 31, second liquid passage pipe; 32, insulation layer; 33, joint; 34, connecting hose; 35, first liquid passage pipe; 4. Detailed Implementation

[0033] Example 1:

[0034] like Figures 1-4 In the present invention, a prefabricated concrete composite tower tube segment includes side plates 105 located on both sides and end plates 108 located at the upper and lower ends. The side plates 105 and end plates 108 are made of carbon steel and are fixedly connected to each other.

[0035] The side plate 105 is provided with a circumferential connection hole 101 for circumferential connection;

[0036] The end plate 108 is arc-shaped, and a plurality of tension holes 103 are arranged at the position of the arc-shaped inner edge of the top or bottom end plate 108; preferably, the tension holes 103 of the tension segment of the pipe piece 1 are arranged at the arc-shaped inner edge of the bottom end plate 108.

[0037] At least two groups of horizontal ribs 109 are arranged between the side plates 105 on both sides, and the two groups of horizontal ribs 109 are respectively arranged at the positions close to the inner edge and the outer edge of the arc of the pipe piece 1, and the two groups of horizontal ribs 109 are arranged as a plurality of rods along the height direction of the pipe piece 1.

[0038] At least two groups of vertical ribs 110 are arranged between the end plates 108 at both ends, and the two groups of vertical ribs 110 are respectively arranged at the positions close to the inner edge and the outer edge of the arc of the pipe piece 1, and the two groups of vertical ribs 110 are arranged as a plurality of rods along the arc of the pipe piece 1.

[0039] The horizontal ribs 109 and the vertical ribs 110 are fixedly connected, and a plurality of hoop ribs 111 are arranged between adjacent vertical ribs 110.

[0040] The remaining part is concrete. In the preferred scheme, the concrete is cement with a grade of C55 or above or UHPC (ultra-high performance concrete).

[0041] In the preferred scheme as shown in the drawings, positioning reinforcing ribs 113 are arranged between adjacent side plates 105 and end plates 108 for fixedly connecting the side plates 105 and the end plates 108. The reinforcing ribs 113 adopt the structure of triangular blocks. Figure 2

[0042] In the preferred scheme as shown in the drawings, arc-shaped screw holes 104 are arranged on the side plates 105 for passing through the bent bolts 102; the arc-shaped screw holes 104 arranged on the side plates 105 improve the circumferential tensile strength of the pipe piece 1. Compared with the existing embedded steel plates, the tensile strength of the pipe piece 1 of the utility model is greatly improved, and the size precision is high. Figure 1

[0043] The side plates 105 and the connecting boxes 115 are fixedly connected through welding, and the connecting boxes 115 are provided with a top surface, a bottom surface and two side surfaces, and two surfaces facing the side plates 105 and the bottom die surface 211 are open. The connecting boxes 115 are used for forming cavities convenient for installing the bent bolts 102.

[0044] In the preferred scheme as shown in the drawings, a plurality of pads 112 are arranged on the horizontal ribs 109 for limiting the distance between the horizontal ribs 109 and the mold. The pads 112 are in the structure of cylindrical holes and are worn on the horizontal ribs 109. Preferably, the pads 112 are made of UHPC material. Figure 3 In the preferred scheme as shown in the drawings, a plurality of pads 112 are arranged on the horizontal ribs 109 for limiting the distance between the horizontal ribs 109 and the mold. The pads 112 are in the structure of cylindrical holes and are worn on the horizontal ribs 109. Preferably, the pads 112 are made of UHPC material.

[0045] Figure 3 ​​​As shown in FIG. 1, the end of the horizontal rib 109 is provided with a bending structure for welding connection with the side plate 105. With this structure, the welding area of the end of the horizontal rib 109 and the side plate 105 is increased, and the tensile strength is improved.

[0046] The preferred scheme is as shown in FIG. 1. Figure 3 As shown in FIG. 1, the end of the vertical rib 110 is provided with a bending structure for welding connection with the end plate 108. With this structure, the welding area of the vertical rib 110 and the end plate 108 is increased, and the tensile strength is improved.

[0047] In the preferred scheme, a plurality of pins 107 are provided on the inner side of the side plate 105, and the free end of the pin 107 is provided with an enlarged head. The pins 107 further improve the bonding strength of the side plate 105 and the concrete.

[0048] The preferred scheme is as shown in FIG. 1. Figure 3 As shown in FIG. 1, the end of the horizontal rib 109 is provided with a pressing plate 106, which is fixedly connected with the side plate 105 by welding. With this structure, the tensile strength between the horizontal rib 109 and the side plate 105 is further improved, so that the assembled concrete tower cylinder of the segmental pipe 1 has higher bending and torsional resistance, and the safety is improved.

[0049] In the preferred scheme, the stirrup 111 is arranged staggered between adjacent vertical ribs 110.

[0050] In the preferred scheme, the outer edge of the end plate 108 provided with the tensioning hole 103 protrudes from the inner wall of the segmental pipe 1.

[0051] A tensioning groove 214 for accommodating the outer edge of the tensioning hole 103 is provided on the bottom mold 205 of the mold, so that the processing of the tensioning segmental pipe with the tensioning hole 103 is facilitated.

[0052] Embodiment 2:

[0053] Based on the embodiment 1, the preparation method of the assembled concrete composite tower cylinder segmental pipe is further described for easy implementation, which comprises the following steps:

[0054] S1, a bottom mold 205 is provided, the upper surface of the bottom mold 205 is arc-shaped, the bottom mold 205 is horizontally arranged, a support seat 213 is provided at the bottom of the bottom mold 205, a side mold 201 and an edge mold 206 are provided on the bottom mold 205, the positions and shape accuracy of the remaining edge molds 206 and side molds 201 are positioned based on the edge mold 206 located at the bottom; preferably, the edge mold 206 and the bottom mold 205 are fixedly connected by welding. The side mold 201 and the bottom mold 205 and the edge mold 206 are slidably connected in a position-adjustable and fixed manner, as shown in FIG. 2. Figure 5

[0055] The preferred scheme is as shown in FIG. 1. Figure 1 ​As shown in the figure, in step S1: the side mold 201 is slidably arranged between the edge molds 206, both ends of the side mold 201 are provided with side mold bases 202, both ends of the two edge molds 206 are provided with edge mold bases 204, the side mold bases 202 and the edge mold bases 204 are connected through the side mold screw rods 203, and the side mold screw rods 203 are used to accurately adjust the position of the side mold 201. With this structure, it is convenient to accurately adjust the distance between the side molds 201, and further accurately control the distance between the side plates 105.

[0056] S2, the side plates 105 are placed by relying on the side mold 201, the side mold 201 and the side plates 105 are fixedly connected by the C-shaped clamps 114, so as to realize accurate positioning of the side plates 105;

[0057] The end plates 108 are placed by relying on the edge molds 206, the edge molds 206 and the end plates 108 are fixedly connected by the C-shaped clamps 114, so as to realize accurate positioning of the end plates 108; the end plates 108 with the tension holes 103 are placed in the tension grooves 214.

[0058] After the position accuracy of the outer walls of the side plates 105 and the end plates 108 is detected to meet the standard, the adjacent side plates 105 and the end plates 108 are fixedly connected by welding through the positioning reinforcing ribs 113, and then the joints between the side plates 105 and the end plates 108 are welded and connected; thereby the overall frame of the support side plate and the end plate is formed.

[0059] Preferably, in step S2: the bottom mold 205 includes a bottom mold surface 211, and the bottom mold surface 211 is provided with a bottom mold grid 212 on the back surface thereof;

[0060] The top mold 21 includes a top mold surface 208, and the top mold surface 208 is provided with a top mold grid 209 on the back surface thereof;

[0061] A plurality of isothermal plates 3 are arranged in the positions of the bottom mold surface 211 and the top mold surface 208, a second liquid pipe 32 is arranged in the isothermal plate 3, the second liquid pipe 32 is connected with a connecting hose 35 through a joint 34, and the connecting hose 35 is used to be connected with a liquid supply and temperature adjusting device;

[0062] Another optional scheme is as follows: Figure 7 In the top mold 21 and the bottom mold 205, a first liquid pipe 4 is arranged in the position close to the mold surface, and the first liquid pipe 4 is used to be connected with a liquid supply and temperature adjusting device;

[0063] A plurality of temperature sensors are further arranged on the mold;

[0064] Or temperature sensors are arranged at the inlets and outlets of the liquid pipes;

[0065] The device for controlling temperature is arranged to be consistent with the temperature of the construction site during installation, so that the preparation temperature is consistent with the temperature of the construction site during installation, and the influence of thermal expansion and cold contraction can be avoided to the maximum extent. According to calculation, a temperature difference of 30 DEG C can cause an expansion and contraction range of about 15 mm for a 19-meter component. Therefore, it is very important to avoid the influence of thermal expansion and cold contraction, and the dimensional error of the utility model needs to be controlled within ± 1 mm.

[0066] S3, install horizontal bars 109, vertical bars 110 and stirrups 111, install a connecting box 115, the connecting box 115 is fixedly connected with the side plate 105, and a sealing structure is formed between the connecting box 115 and the bottom die surface 211;

[0067] Preferably, in step S3, a bending structure is arranged at the end of the horizontal bar 109, and the horizontal bar 109 is welded and connected with the side plate 105 through the bending structure;

[0068] A pressing plate 106 is arranged at the welding position, and the pressing plate 106 is welded and connected with the bending structure and the side plate 105;

[0069] A plurality of pads 112 are arranged on the horizontal bar 109 or the vertical bar 110;

[0070] A bending structure is arranged at the end of the vertical bar 110, and the bending structure is welded and connected with the end plate 108;

[0071] A pressing plate is arranged at the welding position of the vertical bar 110, and the pressing plate is welded and connected with the bending structure and the end plate 108;

[0072] A pin 107 is further arranged on the inner wall of the side plate 105 and the end plate 108;

[0073] The stirrups 111 are arranged staggeredly between adjacent vertical bars 110.

[0074] Preferably, after the horizontal bars 109, the vertical bars 110 and the stirrups 111 are installed, the C-shaped clamps 114 are loosened, the position precision of the outer walls of the side plate 105 and the end plate 108 is re-detected, and the next step is performed after the position precision meets the preset value;

[0075] If the position precision exceeds the preset value, the internal stress is removed in a flame heating mode, and the shape and position are corrected until the position precision meets the standard;

[0076] The poured concrete adopts cement above C55 or UHPC.

[0077] S4, first, the top die 21 close to the side die 201 is installed, the concrete at the covered position of the top die 21 is poured, and the pouring is vibrated sufficiently;

[0078] The top die 21 is continuously installed from both sides to the middle, the concrete at the covered position of the top die 21 is poured, and the pouring is vibrated sufficiently;

[0079] S5, curing with steam until the concrete is finished;

[0080] The preparation of the segmental segment 1 is realized through the above steps.

[0081] The above-mentioned embodiments are only preferred technical solutions of the present application, and should not be regarded as limitations on the present application. The embodiments in the application and the features in the embodiments can be combined with each other as long as they do not conflict. The protection scope of the present application should be based on the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present application.

Claims

1. A segment of a fabricated concrete composite tower drum, characterized by: The side plate (105) and the end plate (108) are made of carbon steel and are fixedly connected between the side plate (105) and the end plate (108); The side plate (105) is provided with a circumferential connecting hole (101) for circumferential connection; The end plate (108) is arc-shaped, and a plurality of tension holes (103) are arranged at the inner edge of the arc-shaped end plate (108) at the top or bottom; At least two groups of horizontal ribs (109) are arranged between the side plates (105) on both sides, and the two groups of horizontal ribs (109) are respectively arranged near the inner edge and the outer edge of the arc of the pipe piece (1) and are arranged as a plurality of horizontal ribs (109) along the height direction of the pipe piece (1); At least two groups of vertical ribs (110) are arranged between the end plates (108) at both ends, and the two groups of vertical ribs (110) are respectively arranged near the inner edge and the outer edge of the arc of the pipe piece (1) and are arranged as a plurality of vertical ribs (110) along the arc of the pipe piece (1); The horizontal rib (109) and the vertical rib (110) are fixedly connected, and a plurality of stirrups (111) are arranged between adjacent vertical ribs (110); The rest is concrete.

2. The fabricated concrete composite tower drum segment of claim 1, wherein Positioning reinforcing ribs (113) are arranged between adjacent side plates (105) and end plates (108) to fixedly connect the side plates (105) and the end plates (108).

3. The fabricated concrete composite tower drum segment of claim 1 or 2, wherein The side plate (105) is provided with a screw hole (104) for passing through a bent bolt (102); The side plate (105) is fixedly connected with a connecting box (115), and the connecting box (115) is provided with a top surface, a bottom surface, and two side surfaces, and two surfaces facing the side plate (105) and the bottom die surface (211) are open.

4. The fabricated concrete composite tower drum segment of claim 1, wherein: A plurality of spacers (112) are arranged on the horizontal rib (109) to limit the distance between the horizontal rib (109) and the mold; A bending structure is arranged at the end of the horizontal rib (109), and the bending structure is used for welding connection with the side plate (105).

5. The fabricated concrete composite tower drum segment of claim 1, wherein: A bending structure is arranged at the end of the vertical rib (110), and the bending structure is used for welding connection with the end plate (108).

6. The segment of a fabricated concrete composite tower drum according to claim 1, wherein The inner side of the side plate (105) is provided with a plurality of pins (107), and the free end of the pin (107) is provided with an enlarged head.

7. The fabricated concrete composite tower drum segment of claim 4, wherein: A pressing plate (106) is arranged at the end of the horizontal rib (109), and the pressing plate (106) is fixedly connected with the side plate (105).

8. The fabricated concrete composite tower drum segment of claim 1, wherein: The stirrups (111) are arranged in a staggered manner between adjacent vertical ribs (110).

9. The fabricated concrete composite tower drum segment of claim 1, wherein: The concrete is made of C55 or above cement or UHPC.

10. The fabricated concrete composite tower drum segment of claim 1, wherein: The outer edge of the end plate (108) provided with the tension hole (103) protrudes from the inner wall of the pipe piece (1); A tension groove (214) for accommodating the outer edge provided with the tension hole (103) is arranged on the bottom die (205) of the mold.

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