Waterproof protection device for splicing seam of duct pieces of concrete tower drum

Abstract

The invention discloses a concrete tower tube segment splicing seam waterproof protection device, and relates to the technical field of concrete tower tubes, the concrete tower tube segment splicing seam waterproof protection device comprises a connecting piece and water expansion water stop glue, the connecting piece is arranged between two adjacent concrete tower tube segments, and the two sides, making contact with the concrete tower tube segments, of the connecting piece are provided with protrusions; the end face, making contact with the connecting piece, of the concrete tower tube segment is provided with a groove matched with the protrusion. The space between the connecting piece and the concrete tower tube segment is filled with water expansion water stop glue. The connecting piece is arranged at the joint of the two adjacent concrete lining segments, so that the rigidity and the stability of the joint of the segments are improved; the water-swelling water-stopping glue filled between the connecting piece and the concrete lining segment can absorb water to swell, and all irregular surfaces, gaps and gaps of the splicing seam are filled with the water-swelling water-stopping glue, so that the seepage-proofing and leakage-stopping effects are achieved; the concave-convex part of the contact surface of the connecting piece and the concrete lining segment increases the effective action area of the water swelling water stop glue, and the waterproof performance of the segment joint is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of concrete towers, and in particular to a waterproof protection device for splicing seams of concrete tower segments. Background Art

[0002] At present, my country's wind power has entered a stable growth stage. With the end of the rush to install and the arrival of the era of parity, the capacity of single units has become larger and larger, and the height of towers has become higher and higher, which has become a major trend in the wind power industry in recent years. In the context of the increasingly refined development of power generation, increasing the height of wind turbine towers is considered to be a direct and effective means to increase power generation in low wind speed areas. Steel-concrete towers have good economy, superior applicability and excellent stability. At present, they have become one of the mainstream tower products for large-impeller units and high-hub towers at home and abroad. At present, wind power mixed tower prefabricated towers are generally composed of traditional steel cylinder sections and concrete pipe segments, which are connected in the middle by a conversion device. Concrete and steel cylinders complement each other with their respective advantages to ensure the safety of the tower and improve the economy of the tower, providing a new choice for solving the power generation in low wind speed areas. Most of the mixed tower prefabricated towers are in the form of full vertical, segmented and segmented joints. Segmented splicing means that the segments of the mixed tower are made up of multiple segments, which has the characteristics of fast construction speed and low construction cost, but it also often causes problems such as structural leakage, which mainly occurs at the circumferential seams and longitudinal seams of the segment splicing. Therefore, it is of great significance to waterproof and reinforce the joints of the segment such as the circumferential seams and longitudinal seams. Summary of the invention

[0003] The purpose of the present invention is to provide a waterproof protection device for the joints of concrete tower tube segments to solve the problem of structural water leakage in the above-mentioned prior art.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] A waterproof protection device for the joints of concrete tower segments, comprising a connecting piece and a water-swelling waterproofing glue, wherein the connecting piece is arranged between two adjacent concrete tower segments, protrusions are arranged on both sides of the connecting piece in contact with the concrete tower segments, and grooves matching the protrusions are arranged on the end surfaces of the concrete tower segments in contact with the connecting piece; the water-swelling waterproofing glue is filled between the connecting piece and the concrete tower segments.

[0006] In an exemplary embodiment, a fastening structure is provided between two adjacent concrete tower segments to connect the two segments and to compress the water-swellable waterproofing adhesive.

[0007] In an exemplary embodiment, the fastening structure includes prestressed tendons and anchor bolts. The concrete tower segments and connecting pieces are both provided with through holes for the prestressed tendons to pass through. The anchor bolts are provided at both ends of the prestressed tendons and are fastened to the concrete tower tube.

[0008] In an exemplary embodiment, each of the concrete tower segments is provided with a plurality of tensioning components for tightening the concrete tower segments, and the tensioning components corresponding to two adjacent concrete tower segments are connected by a quick connector, and an adjustment mechanism for adjusting the tightness of the tensioning component is provided at a position corresponding to the position of each tensioning component on one of the concrete tower segments.

[0009] In an exemplary embodiment, the tensioning assembly includes a pipe fitting and prestressed tendons, the pipe fitting is pre-buried in the concrete tower segment, and the bending curvature of the pipe fitting is the same as the bending curvature of the concrete tower segment, and the prestressed tendons are inserted in the pipe fitting.

[0010] In an exemplary embodiment, the quick connector includes a connecting sleeve and a connecting head, and both ends of the prestressed tendons corresponding to each of the concrete tower segments are connected to a connecting head, and the prestressed tendons corresponding to two adjacent concrete tower segments are detachably installed at both ends of the connecting sleeve.

[0011] In an exemplary embodiment, two limit blocks are symmetrically provided on the outer wall at one end of the connector, and sliding grooves extending along the axial direction are symmetrically provided on the inner walls at both ends of the connecting sleeve. The bottom of each sliding groove is provided with a limit groove extending along the circumference of the connecting sleeve. After the limit block is inserted to the bottom of the sliding groove, it is rotated into the limit groove to achieve axial limitation of the connector.

[0012] In an exemplary embodiment, a partition is provided in the middle of the connecting sleeve, compression springs are installed on both sides of the partition, and the other end of the compression spring is pressed on the end of the connecting head.

[0013] In an exemplary embodiment, the prestressed tendons corresponding to one of the concrete tower segments are divided into two sections, and the adjustment mechanism includes a screw sleeve and a screw rod. A screw rod is provided at each end of the prestressed tendons at the dividing point, and the threads at both ends of the screw sleeve have opposite rotation directions, and the two screw rods are respectively threadedly connected to the two ends of the screw sleeve.

[0014] In an exemplary embodiment, an operation hole is opened on the concrete tower tube segment corresponding to the adjustment mechanism, and the operation hole penetrates into the interior of the pipe.

[0015] Compared with the prior art, the present invention has achieved the following technical effects:

[0016] By setting a connector at the joint of two adjacent concrete lining segments, the rigidity and stability of the segment joint are improved, and water-swelling waterproofing glue is filled on both sides of the connector in contact with the concrete lining segment. The water-swelling waterproofing glue is usually based on polyurethane prepolymer and contains a special grafted urethane paste. It can absorb water and swell when it comes into contact with water, resulting in 2-3 times of expansion deformation. After expansion, it is elastic and fills all irregular surfaces, gaps and gaps in the joint. At the same time, the contact pressure generated plays a role in preventing seepage and leakage. The concave and convex parts of the contact surface between the connector and the concrete lining segment increase the effective action area of ​​the water-swelling waterproofing glue, further improving the waterproof performance of the segment joint.

[0017] Other technical solutions disclosed in the present invention also have the following technical advantages:

[0018] 1. By setting a fastening structure between two adjacent concrete tower segments, the adjacent concrete tower segments are connected and tightened to compress the water-swelling waterproofing glue to prevent the gap in the joint from increasing, causing the water-swelling waterproofing glue to loosen or causing a gap with the concrete tower segment to cause water seepage.

[0019] 2. By setting up a fastening structure including prestressed tendons and anchor bolts, and opening through holes for the prestressed tendons to pass through on the concrete tower tube segments and connecting parts, anchor bolts are set at both ends of the prestressed tendons and fastened to the concrete tower tube, the concrete tube segments and connecting parts are spliced ​​into an integral component, effectively improving the stiffness and stability of the tube segment joints.

[0020] 3. Tighten the concrete tower segments by setting up a tensioning component. During the construction process, before the concrete tower segments are spliced, the prestressed tendons corresponding to the two adjacent concrete tower segments are connected together through a quick connector. Then, by rotating the corresponding screw sleeve of one of the concrete tower segments, the prestressed tendons are tightened. This can tighten all the concrete tower segments and prevent the concrete tower segments from loosening along their radial direction, which would cause a gap between the sealing layer and the concrete tower segments and cause water seepage. This can achieve the purpose of fixing the concrete tower segments and can also make the concrete tower segments squeeze the water-swelling waterstop glue, thereby improving the adhesion between the water-swelling waterstop glue and the concrete tower segments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1It is a structural schematic diagram of a waterproof protection device for splicing seams of concrete tower tube segments disclosed in a specific embodiment of the present invention;

[0023] Figure 2 for Figure 1 A front view of

[0024] Figure 3 for Figure 2 Middle AA section view;

[0025] Figure 4 for Figure 3 Enlarged view of middle part B;

[0026] Figure 5 for Figure 4 A cross-sectional view of a quick connector;

[0027] Figure 6 for Figure 5 A schematic diagram of the structure of the middle connector and the limit block;

[0028] Figure 7 for Figure 5 A schematic diagram of the structure of the middle connecting sleeve, the slide groove and the limit groove;

[0029] Figure 8 for Figure 3 Enlarged view of middle C;

[0030] Among them, 1. Concrete tower tube segment; 2. Connecting piece; 3. Groove; 4. Protrusion; 5. Water-expanding waterproof glue; 6. Pipe fitting; 7. Prestressed tendons; 8. Connecting sleeve; 9. Connecting head; 10. Slide; 11. Limit block; 12. Compression spring; 13. Partition; 14. Limiting groove; 15. Screw; 16. Screw sleeve; 17. Operating hole. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. People familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present invention can be implemented, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the present invention. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0033] It should also be noted that in the embodiments of the present application, the same figure mark is used to represent the same component or the same part.

[0034] The purpose of the present invention is to provide a waterproof protection device for the joints of concrete tower tube segments to solve the problem of structural water leakage in the prior art.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Please refer to Figures 1 to 8This embodiment provides a waterproof protection device for the joint of concrete tower tube segments, including a connector 2 and a water-swellable waterproofing glue 5. The connector 2 is arranged between two adjacent concrete tower tube segments 1. The connector 2 is made of a material with certain rigidity and strength, such as steel, aluminum, carbon fiber, fiberglass, and iron-aluminum alloy, which can effectively improve the rigidity and stability of the joint of the concrete tower tube segment 1. The connector 2 is provided with protrusions 4 on both sides in contact with the concrete tower tube segment 1, and the end surface of the concrete tower tube segment 1 in contact with the connector 2 is provided with a groove 3 adapted to the protrusion 4. The connector 2 and the concrete tower tube segment 1 are filled with water-swellable waterproofing glue 5. The water-swellable waterproofing glue 5 is usually based on a polyurethane prepolymer and contains a special grafted urethane paste. It can absorb water and swell when it comes into contact with water, resulting in 2-3 times of expansion deformation. After expansion, it is elastic and fills all irregular surfaces, gaps and gaps in the joint. At the same time, the contact pressure generated plays a role in preventing seepage and stopping leakage. The concave and convex parts of the contact surface between the connector 2 and the concrete lining segment increase the effective action area of ​​the water-swelling waterproofing adhesive, further improving the waterproof performance of the segment joints.

[0037] Furthermore, waterproof tapes covering the water-swellable waterstop glue 5 are provided at both inner and outer ends of the joints where each connecting piece 2 contacts the concrete tower segment 1. The waterproof tapes play a secondary sealing role and can protect the water-swellable waterstop glue 5 from being scratched, thereby extending its service life. While ensuring the overall tower stability of the segment structure, the sealing of the concrete tower is effectively improved.

[0038] As a preferred solution of this embodiment, a fastening structure is provided between two adjacent concrete tower tube segments 1 to connect the two to compress the water-swelling waterproofing glue 5. By providing a fastening structure between two adjacent concrete tower tube segments 1, the adjacent concrete tower tube segments 1 are connected and tightened to compress the water-swelling waterproofing glue 5, thereby preventing the gap of the joint from increasing, causing the water-swelling waterproofing glue 5 to loosen, or causing a gap with the concrete tower tube segment 1 to cause water seepage.

[0039] Furthermore, the fastening structure includes prestressed tendons 7 and anchor bolts. Through holes for the prestressed tendons 7 to pass through are provided on the concrete tower tube segment 1 and the connector 2. The anchor bolts are provided at both ends of the prestressed tendons 7 and are fastened to the concrete tower tube. By providing a fastening structure including prestressed tendons 7 and anchor bolts, the concrete tube segment and the connector 2 are spliced ​​into an integral component, which effectively improves the rigidity and stability of the tube segment joint.

[0040] As another preferred scheme of this embodiment, each concrete tower segment 1 is provided with a plurality of tensioning components for tightening the concrete tower segment 1, and the plurality of tensioning components are arranged at intervals from top to bottom along the concrete tower segment 1, and the distance between two adjacent tensioning components is equal. The tensioning components corresponding to two adjacent concrete tower segments 1 are connected by quick connectors, and an adjustment mechanism for adjusting the tightness of the tensioning component is provided at a position corresponding to the position of each tensioning component on one of the concrete tower segments 1.

[0041] Specifically, Figure 4 As shown, the tensioning assembly includes a pipe fitting 6 and a prestressed tendon 7, wherein the pipe fitting 6 is pre-buried in the concrete tower segment 1, and the curvature of the pipe fitting 6 is the same as that of the concrete tower segment 1, and the prestressed tendon 7 is inserted in the pipe fitting 6 to ensure that the prestressed tendon 7 can move in the pipe fitting 6. The tensioning assembly structure composed of the pipe fitting 6 and the prestressed tendon 7 can avoid direct contact between the prestressed tendon 7 and the concrete tower segment 1, thereby effectively protecting the concrete tower segment 1.

[0042] Specifically, Figure 4 and Figure 5 As shown, the quick connector includes a connecting sleeve 8 and a connecting head 9, wherein the connecting sleeve 8 is inserted into the through hole opened on the connecting piece 2, and each prestressed tendon 7 corresponding to each concrete tower tube segment 1 is connected to a connecting head 9 at both ends, and the connecting head 9 can be fixed on the prestressed tendon 7 by anchoring or welding, and the prestressed tendons 7 corresponding to two adjacent concrete tower tube segments 1 are detachably installed at both ends of the connecting sleeve 8, which is convenient for connection. Figures 5 to 7 As shown, two limit blocks 11 are symmetrically arranged on the outer wall at one end of the connector 9, and correspondingly, the inner walls at both ends of the connector sleeve 8 are symmetrically provided with slide grooves 10 extending along the axial direction thereof, and the bottom of each slide groove 10 is provided with a limit groove 14 extending along the circumferential direction of the connector sleeve 8, and the limit blocks 11 are adapted to the slide grooves 10 and the limit grooves 14, and the limit blocks 11 are inserted along the slide grooves 10 to the bottom of the grooves, and then rotated into the limit grooves 14 to achieve axial limitation of the connector 9. Furthermore, a partition 13 is arranged in the middle of the connector sleeve 8, and compression springs 12 are installed on both sides of the partition 13, and the other end of the compression spring 12 is pressed on the end of the connector 9, and the compression spring 12 is used to push the connector 9 against the connector to prevent the connector 9 from automatically loosening. In this embodiment, the quick connector adopts the structure of a connecting sleeve 8 and a connecting head 9. During construction, the limit block 11 of the connecting head 9 is inserted into the connecting sleeve 8 along the slide groove 10, and then the connecting head 9 is rotated so that the limit block 11 is inserted into the limit groove 14. At this time, under the elastic force of the compression spring 12, the limit block 11 of the connecting head 9 is tightly attached to the limit groove 14, and the connecting head 9 cannot rotate automatically, that is, it cannot loosen automatically. Compared with the bolt-tightened connection, its installation method is faster.

[0043] Specifically, Figure 3 and Figure 8 As shown, the prestressed tendon 7 corresponding to one of the concrete tower tube segments 1 is divided into two sections, and the adjustment mechanism includes a screw sleeve 16 and a screw rod 15. A screw rod 15 is provided at each end of the prestressed tendon 7 at the division. The screw rod 15 and the prestressed tendon 7 can be connected by anchoring or welding. The threads at both ends of the screw sleeve 16 are in opposite directions. The two screw rods 15 are respectively threadedly connected to the two ends of the screw sleeve 16. The outer wall of the screw sleeve 16 is an outer hexagonal shape. The prestressed tendon 7 can be driven to move closer to the middle position of the screw sleeve 16 by rotating the screw sleeve 16 to achieve the tightening of the prestressed tendon 7. Furthermore, an operation hole 17 is provided on the concrete tower tube segment 1 corresponding to the adjustment mechanism. The width of the operation hole 17 is greater than the length of the screw sleeve 16, and the operation hole 17 is located on the inner side of the concrete tower tube segment 1. The operation hole 17 penetrates into the interior of the pipe fitting 6. Workers can operate the screw sleeve 16 through the operation hole 17 with tools.

[0044] The concrete tower segments are tightened by setting a tensioning component. During the construction process, before the concrete tower segments are spliced, the prestressed tendons corresponding to two adjacent concrete tower segments are connected together through quick connectors. Then, by rotating the screw sleeve corresponding to one of the concrete tower segments, the prestressed tendons are tightened. This can achieve the tightening of all concrete tower segments, prevent the concrete tower segments from loosening along their radial direction, and cause gaps between the sealing layer and the concrete tower segments, resulting in water seepage. This achieves the purpose of fixing the concrete tower segments, and can also make the concrete tower segments squeeze the water-swelling waterstop glue, thereby improving the adhesion between the water-swelling waterstop glue and the concrete tower segments.

[0045] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] If the present invention discloses or involves components or structures that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except when it is obviously impossible to use an one-piece molding process).

[0047] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in the present invention include states or shapes that are approximate, similar, or close to them.

[0048] Any component provided by the present invention may be assembled from a plurality of separate components, or may be a separate component manufactured by an integral forming process.

[0049] Adaptive changes made according to actual needs are all within the protection scope of the present invention.

[0050] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0051] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A waterproof protection device for the joints of concrete tower segments, characterized in that: It includes a connecting piece and a water-swelling waterproofing glue. The connecting piece is arranged between two adjacent concrete tower segments. The two sides of the connecting piece in contact with the concrete tower segments are provided with protrusions, and the end surfaces of the concrete tower segments in contact with the connecting piece are provided with grooves matched with the protrusions; the water-swelling waterproofing glue is filled between the connecting piece and the concrete tower segments.

2. The waterproof protection device for concrete tower tube segment joints according to claim 1 is characterized in that: A fastening structure is provided between two adjacent concrete tower tube segments to connect the two and compress the water-swelling waterproof glue.

3. The waterproof protection device for concrete tower tube segment joints according to claim 2 is characterized in that: The fastening structure includes prestressed tendons and anchor bolts. The concrete tower tube segments and the connecting pieces are both provided with through holes for the prestressed tendons to pass through. The anchor bolts are provided at both ends of the prestressed tendons and are fastened in contact with the concrete tower tube.

4. The waterproof protection device for concrete tower tube segment joints according to claim 1 is characterized in that: Each of the concrete tower segments is provided with a plurality of tensioning components for tightening the concrete tower segments. The tensioning components corresponding to two adjacent concrete tower segments are connected by quick connectors. An adjustment mechanism for adjusting the tightness of the tensioning component is provided at a position corresponding to the position of each tensioning component on one of the concrete tower segments.

5. The waterproof protection device for concrete tower tube segment joints according to claim 4 is characterized in that: The tensioning assembly includes a pipe fitting and a prestressed tendon. The pipe fitting is pre-buried in the concrete tower tube segment, and the bending curvature of the pipe fitting is the same as the bending curvature of the concrete tower tube segment. The prestressed tendon is inserted in the pipe fitting.

6. The waterproof protection device for concrete tower tube segment joints according to claim 5 is characterized in that: The quick connector includes a connecting sleeve and a connecting head. Both ends of the prestressed tendons corresponding to each concrete tower segment are connected to a connecting head. The prestressed tendons corresponding to two adjacent concrete tower segments are detachably installed at both ends of the connecting sleeve.

7. The waterproof protection device for concrete tower tube segment joints according to claim 6 is characterized in that: Two limit blocks are symmetrically provided on the outer wall at one end of the connector, and sliding grooves extending along the axial direction are symmetrically provided on the inner walls at both ends of the connecting sleeve. The bottom of each sliding groove is provided with a limit groove extending along the circumference of the connecting sleeve. After the limit block is inserted to the bottom of the groove along the sliding groove, it is rotated into the limit groove to realize axial limitation of the connector.

8. The waterproof protection device for concrete tower tube segment joints according to claim 7 is characterized in that: A partition is arranged in the middle of the connecting sleeve, and compression springs are installed on both sides of the partition, and the other end of the compression spring is pressed on the end of the connecting head.

9. The waterproof protection device for concrete tower tube segment joints according to claim 4 is characterized in that: The prestressed tendons corresponding to one of the concrete tower segments are divided into two sections. The adjustment mechanism includes a screw sleeve and a screw rod. A screw rod is provided at each end of the prestressed tendons at the dividing point. The threads at both ends of the screw sleeve have opposite rotation directions. The two screw rods are respectively threadedly connected to the two ends of the screw sleeve.

10. The waterproof protection device for concrete tower tube segment joints according to claim 9, characterized in that: An operation hole is provided on the concrete tower tube segment corresponding to the adjustment mechanism, and the operation hole penetrates into the interior of the pipe.

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