A slice transit section structure

Abstract

The application discloses a kind of slice switching section structures, it is related to wind power facilities field.Slicing switching section structure includes angle column, inner steel cylinder and box type combined beam;Each angle column is fixed with inner steel cylinder by a box type combined beam;Slicing switching section structure is fixed by at least two rotationally symmetrical splicing structures by connecting mechanism;Switching section structure also includes bottom reinforcing component, top reinforcing component and vertical reinforcing component.The application solves the problem of transportation size limit by splicing design, meets the requirements of transportation limit;Bottom reinforcing component strengthens the shear capacity of the junction of angle column and inner steel cylinder, top reinforcing component improves load transfer path, vertical reinforcing component suppresses lateral deformation, reduces stress concentration phenomenon together, greatly optimizes the stress distribution of the junction area of angle column, inner steel cylinder and box type combined beam;Under the premise of guaranteeing structure safety, avoid the problem of excessive use of material for traditional reinforcement structure, improve material utilization efficiency, reduce construction cost.

Description

Technical Field

[0001] This invention relates to the field of wind power facilities, and more specifically to a segmented transition section structure. Background Technology

[0002] In wind power facilities, the transition section structure is a crucial component connecting the upper steel tower section and the lower lattice section, and its design directly affects the overall structural stability, economy, and construction feasibility. However, in actual engineering projects, the dimensions of the transition section structure are often strictly limited by transportation conditions. Due to the clearance requirements of transportation modes such as highways and railways, the maximum external dimensions of the transition section structure must be controlled within a specified range, which necessitates an extremely compact arrangement of structural components during the design phase. This compact layout not only increases the complexity of the structural design but also easily leads to uneven stress distribution, especially stress concentration in the joint areas of corner columns, inner steel cylinders, and connecting beams, thereby reducing structural efficiency. To ensure safety, traditional designs often use increased material usage to reinforce critical parts, but this leads to increased construction costs and wasted resources.

[0003] Currently, most transition sections adopt an integral design. While this provides good overall structural integrity, the excessively large transport dimensions make it difficult to meet the requirements of long-distance or complex routes. If a segmented design is used, the connection strength after segmentation is often insufficient, making the joints vulnerable points and requiring additional reinforcement measures. This, in turn, increases structural complexity and material consumption. Summary of the Invention

[0004] In view of this, the present invention provides a segmented transition section structure to solve the problems mentioned in the background art.

[0005] This invention provides a segmented transition section structure for connecting an upper steel tower section and a lower lattice section. The segmented transition section structure includes corner columns, an inner steel cylinder, and box-type composite connecting beams. Each corner column is fixedly configured with the inner steel cylinder through a box-type composite connecting beam. The corner columns and the box-type composite connecting beams are arranged in a ring around the outer periphery of the inner steel cylinder.

[0006] The segmented transition section structure is composed of at least two rotationally symmetrical splicing structures fixed by a connecting mechanism; each splicing structure includes a corner column, an arc-shaped inner steel cylinder, and a box-type combined connecting beam;

[0007] The transition section structure also includes:

[0008] The bottom reinforcing component is fixedly installed on the bottom side of the box-type combined connecting beam connecting the corner column and the inner steel cylinder, and on the bottom side of the inner cavity of the inner steel cylinder;

[0009] A top reinforcing component is provided at an interval from the bottom reinforcing component. The top reinforcing component is fixedly installed on the top side of the box-type combined connecting beam connecting the corner column and the inner steel cylinder, and on the top side of the inner cavity of the inner steel cylinder.

[0010] And vertical reinforcing components, which are fixedly installed on the outer periphery of the inner steel cylinder and on the box-type combined connecting beam.

[0011] Beneficial Effects: By designing the transition section structure as two or more rotationally symmetrical spliced ​​structures, the problem of transportation size limitations is solved. The reduced size of each spliced ​​structure meets the transportation clearance requirements of highways and railways, reducing the difficulty and cost of long-distance or complex route transportation. This segmented design allows for factory prefabrication of spliced ​​structures and on-site assembly through connecting mechanisms, improving construction flexibility and efficiency and avoiding the inconvenience of transporting monolithic structures. The coordinated setting of bottom reinforcing components, top reinforcing components, and vertical reinforcing components enhances the overall stiffness and stability of the transition section structure. The bottom reinforcing components strengthen the bottom shear resistance at the connection between the corner column and the inner steel cylinder, the top reinforcing components improve the load transfer path, and the vertical reinforcing components suppress lateral deformation, collectively reducing stress concentration. This significantly optimizes the stress distribution in the joint area of ​​the corner column, inner steel cylinder, and box-type composite beam, avoiding the problem of excessive material use to reinforce stress concentration areas while ensuring structural safety, thus improving material utilization efficiency and reducing construction costs.

[0012] In some embodiments, the box-type composite connecting beam includes a connecting beam bottom plate, a connecting beam top plate, a connecting beam web, and connecting beam side plates. The connecting beam bottom plate and the connecting beam top plate are arranged horizontally and parallel to each other at intervals. The connecting beam web and the connecting beam side plates extend vertically. The connecting beam web is fixedly connected between the corner column and the inner steel cylinder. The lower end of the connecting beam web is fixedly connected to the connecting beam bottom plate, and the upper end of the connecting beam web is fixedly connected to the connecting beam top plate. The connecting beam side plates are fixedly connected between the corner column and the inner steel cylinder. The lower end of the connecting beam side plates is fixedly connected to the connecting beam bottom plate, and the upper end of the connecting beam side plates is fixedly connected to the connecting beam top plate.

[0013] Beneficial effects: The box-type composite coupling beam adopts a combined plate structure of coupling beam bottom plate, coupling beam top plate, coupling beam web plate, and coupling beam side plate, which can form a closed box section. The coupling beam web plate and side plate extend vertically and are fixed to the horizontally set coupling beam bottom plate and top plate, forming a stable frame system, enhancing the local stability of the coupling beam and preventing plate buckling. The box-type composite coupling beam has high bending and torsional stiffness, effectively transferring complex loads such as bending moment, shear force, and torque between the upper steel tower section and the lower lattice section. Furthermore, this modular design facilitates production and quality control, reduces manufacturing difficulty, and provides a reliable foundation for assembling various reinforcing components.

[0014] In some embodiments, in a box-type composite connecting beam, there is one web of the connecting beam and two side plates of the connecting beam. The web of the connecting beam is located between the two side plates of the connecting beam, and the extension plane of the web of the connecting beam intersects with the extension plane of the side plates of the connecting beam. The web of the connecting beam protrudes from the upper end face of the top plate of the connecting beam.

[0015] Beneficial effects: The web of the coupling beam is located between the side plates of the two coupling beams, and its extended plane intersects with the side plates, forming a cross-bracing effect, which improves the lateral stiffness and shear strength of the box-type composite coupling beam. Protruding the web of the coupling beam beyond the upper surface of the top plate increases the connection area between the coupling beam and the superstructure, improving the continuity of load transfer and reducing stress concentration at the connection. This layout optimizes the force flow path within the coupling beam, allowing the load to be distributed more evenly to the corner columns and inner steel cylinder, thus improving structural efficiency.

[0016] In some embodiments, the bottom reinforcement assembly includes a first bottom reinforcement plate, a second bottom reinforcement plate, and a third bottom reinforcement plate;

[0017] The first bottom reinforcing plate is fixedly connected to the inner steel cylinder and the bottom plate of the connecting beam of the two adjacent box-type combined connecting beams. The first bottom reinforcing plate is horizontally set and is at the same horizontal height as the bottom plate of the connecting beam.

[0018] The second bottom reinforcing plate is fixedly connected to the corner column and the bottom plate of the connecting beam. The second bottom reinforcing plate is horizontally arranged and at the same horizontal height as the bottom plate of the connecting beam. The second bottom reinforcing plate is spaced apart from the first bottom reinforcing plate.

[0019] The third bottom reinforcing plate is fixedly and annularly disposed inside the inner steel cylinder. The third bottom reinforcing plate is horizontally disposed and is located at the same horizontal height as the first bottom reinforcing plate.

[0020] Beneficial effects: The first bottom reinforcing plate horizontally connects the inner steel cylinder to the bottom plate of the connecting beam between two adjacent box-type composite beams, enhancing the overall integrity of the bottom horizontal plane and allowing the load to be evenly transferred from the bottom plate of the connecting beam to the inner steel cylinder. The second bottom reinforcing plate horizontally connects the corner columns to the bottom plate of the connecting beam, strengthening the bottom support of the corner column area and preventing local buckling of the corner columns under load. The third bottom reinforcing plate is arranged in a ring inside the inner steel cylinder, improving the circumferential stiffness of the bottom of the inner steel cylinder. Together with the first and second bottom reinforcing plates, it forms a complete bottom reinforcing system, improving the compressive and shear resistance of the transition section structure. Setting all reinforcing plates at the same horizontal height as the bottom plate of the connecting beam ensures a smooth transition of force flow and reduces stress abrupt changes.

[0021] In some embodiments, the bottom reinforcing assembly further includes a reinforcing ring plate, which is vertically and annularly fixed to the third bottom reinforcing plate on the inner edge side away from the inner steel cylinder.

[0022] Beneficial effects: The reinforcing ring plate, vertically arranged in a ring shape on the inner edge of the third bottom reinforcing plate, enhances the edge restraint effect at the bottom of the inner steel cylinder, preventing radial deformation of the inner steel cylinder under internal loads. The reinforcing ring plate and the third bottom reinforcing plate can form an L-shaped composite section, improving the local stiffness and stability of the bottom of the inner steel cylinder, making it suitable for applications requiring resistance to internal pressure or uneven loads. As an additional auxiliary reinforcing structural component, the reinforcing ring plate can reduce the risk of fatigue damage in the welded area at the bottom of the overall segmented transition section structure.

[0023] In some embodiments, the top reinforcement assembly includes a first top reinforcement plate, a second top reinforcement plate, and a third top reinforcement plate;

[0024] The first top reinforcing plate is fixedly connected to the inner steel cylinder and the top plate of the connecting beam of the two adjacent box-type combined connecting beams. The first top reinforcing plate is horizontally arranged and spaced apart from the first bottom reinforcing plate. The first top reinforcing plate and the top plate of the connecting beam are at the same horizontal height.

[0025] The second top reinforcing plate is fixedly connected to the corner column and the top plate of the connecting beam. The second top reinforcing plate is horizontally arranged and at the same horizontal height as the top plate of the connecting beam. The second top reinforcing plate is spaced apart from the first top reinforcing plate.

[0026] The third top reinforcing plate is fixedly and annularly disposed inside the inner steel cylinder. The third top reinforcing plate is horizontally disposed and is at the same horizontal height as the top plate of the connecting beam.

[0027] Beneficial Effects: The symmetrically spaced top and bottom reinforcing components create a double-layer reinforcement structure for the transition section, effectively constraining deformation at the top and bottom of the overall structure and improving overall bending resistance. The first top reinforcing plate connects the inner steel cylinder to the top plate of the connecting beam, and the second top reinforcing plate connects the corner column to the top plate of the connecting beam, ensuring that the upper load is evenly transferred from the steel tower section to the corner column and inner steel cylinder through the top plate. The third top reinforcing plate is arranged in a ring inside the inner steel cylinder, working together with the third bottom reinforcing plate to maintain the vertical stability of the inner steel cylinder and reduce stress concentration on the inner side of the inner steel cylinder. This design allows for a more rational force distribution in the transition section under vertical loads, avoiding the problem of weak tops caused by traditional compact layouts.

[0028] In some embodiments, the vertical reinforcing assembly includes a first vertical reinforcing plate and a second vertical reinforcing plate;

[0029] The first vertical reinforcing plate is vertically fixed to the outer periphery of the inner steel cylinder, and the first vertical reinforcing plate is fixedly disposed between the first top reinforcing plate and the first bottom reinforcing plate;

[0030] The second vertical reinforcing plate is vertically fixed to the inner wall of the side plate of the connecting beam, and the second vertical reinforcing plate is fixedly disposed between the bottom plate of the connecting beam and the top plate of the connecting beam.

[0031] Beneficial effects: The first vertical reinforcing plate is fixed to the outer periphery of the inner steel cylinder and connects to the first top and bottom reinforcing plates to enhance the vertical stiffness and resistance to torsion of the inner steel cylinder, significantly improving its performance under bending moment. The second vertical reinforcing plate is fixed to the inner side of the connecting beam side plate, extending the effective support length of the connecting beam side plate, improving the local stability of the connecting beam, and preventing the side plate from becoming unstable under pressure. The bottom and top reinforcing components, as horizontal reinforcing components, together with the vertical reinforcing components, constitute a spatial grid reinforcement system, which can comprehensively improve the three-dimensional structural stiffness of the transition section structure and optimize the dynamic response and fatigue life of the overall structure.

[0032] In some embodiments, the connecting mechanism includes an outer cover plate assembly, an inner cover plate assembly, and a plurality of locking elements;

[0033] The outer cover plate assembly is disposed at the joint of the outer walls of the two splicing structures, and at least covers the joint of the outer walls of the inner steel cylinder with the arc design in each splicing structure;

[0034] The inner cover plate assembly is disposed at the joint of the inner walls of the two splicing structures, and at least covers the joint of the inner walls of the arc-shaped inner steel cylinder in each splicing structure.

[0035] The outer cover plate assembly and the inner cover plate assembly are each provided with a plurality of cover plate components, and the locking component is used to fix the cover plate components to the inner steel cylinder.

[0036] Beneficial effects: The outer and inner cover plate assemblies respectively cover the joints of the outer and inner walls of the spliced ​​structure, especially the joint of the inner steel cylinder, forming a double seal and reinforcement layer, ensuring the continuity and integrity of the segmented structure at the connection. Multiple locking components secure the cover plate to the inner steel cylinder, providing a detachable rigid connection that facilitates on-site adjustment and assembly, ensuring reliable connection strength. This connection mechanism design avoids the weak connection problem common in segmented designs, enabling the segmented transition section to have a load-bearing capacity comparable to the integral structure after assembly, without requiring additional reinforcement, thus reducing material consumption and complexity.

[0037] In some embodiments, the thickness of the cover plate is not less than half the radial thickness of the inner steel cylinder.

[0038] Beneficial effects: The cover plate thickness is not less than half the radial thickness of the inner steel cylinder, ensuring that the cover plate has sufficient strength and rigidity to transfer the stress at the joint and preventing the cover plate from becoming a weak point in the structure due to its thinness. This thickness design allows the cover plate to effectively share the load of the inner steel cylinder after locking, reducing the stress concentration factor at the connection and ensuring the fatigue life of the connection.

[0039] In some embodiments, each corner post includes an inner ring portion, an outer ring portion, and a plurality of stiffening plate portions; the inner ring portion is coaxially sleeved within the outer ring portion, and the plurality of stiffening plate portions are distributed in a ring and fixed between the inner ring portion and the outer ring portion; the inner cavity of the inner ring portion is adapted to pass through steel strands; the inner ring portion, the outer ring portion, and the stiffening plate portions together divide to form a plurality of cavities, and the cavities are used to pour and fill concrete.

[0040] Beneficial Effects: The corner column employs a composite structure consisting of an inner ring, an outer ring, and stiffening plates, forming a multi-cavity cross-section that significantly improves its compressive, bending, and torsional bearing capacity. The ring-shaped distribution of stiffening plates enhances the connection stiffness between the inner and outer rings, preventing local instability. The inner ring cavity can accommodate steel strands, providing conditions for prestressed design and further optimizing the corner column's load-bearing performance. The filling of the cavities with concrete increases the corner column's mass and damping, improving the overall structural stability and resistance to dynamic loads. Simultaneously, the combination of concrete and steel reduces material costs.

[0041] In some embodiments, a top flange is fixedly provided at the upper end of the inner steel cylinder, and the top flange is adapted to be fixed to the upper steel tower section;

[0042] Each of the corner columns is provided with a bottom flange at its lower end, and the bottom flange is adapted to be fixed to the lower lattice section.

[0043] Beneficial effects: The top flange is located at the upper end of the inner steel cylinder, providing a standardized interface for connecting the upper steel tower section, ensuring that the load is smoothly transferred from the steel tower section to the transition section; the bottom flange is located at the lower end of the corner column, facilitating connection with the lower lattice section, realizing modular installation and improving construction efficiency; this flange connection method is reliable and easy to bolt on site, reducing welding workload and lowering construction difficulty and quality risks. Attached Figure Description

[0044] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0045] Figure 1This is a schematic diagram of the segmented transition section structure according to an embodiment of the present invention;

[0046] Figure 2 This is a schematic diagram of a single splicing structure of the segmented transition segment structure according to an embodiment of the present invention;

[0047] Figure 3 This is a three-dimensional schematic diagram of a single splicing structure of the segmented transition section structure according to an embodiment of the present invention.

[0048] Explanation of reference numerals in the attached figures:

[0049] 101. Corner post; 1011. Inner ring; 1012. Outer ring; 1013. Rib plate; 102. Inner steel cylinder; 103. Top flange; 104. Bottom flange;

[0050] 201. Bottom plate of coupling beam; 202. Top plate of coupling beam; 203. Web plate of coupling beam; 204. Side plate of coupling beam;

[0051] 301. First bottom reinforcing plate; 302. Second bottom reinforcing plate; 303. Third bottom reinforcing plate; 304. Reinforcing ring plate;

[0052] 401. First top reinforcing plate; 402. Second top reinforcing plate; 403. Third top reinforcing plate;

[0053] 501. First vertical reinforcing plate; 502. Second vertical reinforcing plate;

[0054] 601. Outer cover assembly; 602. Inner cover assembly. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] The following is combined with Figures 1 to 3 The following describes embodiments of the present invention.

[0057] According to an embodiment of the present invention, a segmented transition section structure is provided for connecting an upper steel tower section and a lower lattice section, such as... Figure 1As shown, the segmented transition section structure includes corner columns 101, an inner steel cylinder 102, and a box-type composite connecting beam; there are three or more corner columns 101; preferably, there are four corner columns 101. Each corner column 101 is fixedly configured with the inner steel cylinder 102 through a box-type composite connecting beam, and the corner columns 101 and the box-type composite connecting beam are arranged in a ring around the outer periphery of the inner steel cylinder 102.

[0058] In specific structural embodiments, such as Figure 2 As shown, each corner post 101 includes an inner ring portion 1011, an outer ring portion 1012, and multiple stiffening plate portions 1013. The inner ring portion 1011 is coaxially sleeved within the outer ring portion 1012, and the multiple stiffening plate portions 1013 are distributed in a ring and fixed between the inner ring portion 1011 and the outer ring portion 1012. The corner post 101 adopts a composite structure of the inner ring portion 1011, the outer ring portion 1012, and the stiffening plate portions 1013, forming a multi-cavity cross-section, which significantly improves the compressive, bending, and torsional bearing capacity of the corner post 101. The ring distribution of the stiffening plate portions 1013 enhances the connection stiffness between the inner ring portion 1011 and the outer ring portion 1012, preventing local instability.

[0059] The inner ring 1011 has a cavity suitable for threading steel strands. The inner ring 1011, outer ring 1012, and stiffening plate 1013 together form multiple cavities, which are used for pouring and filling concrete. The ability to thread steel strands through the inner ring 1011 provides conditions for prestressed design, further optimizing the load-bearing performance of the corner column 101. The filling concrete within the cavities increases the mass and damping of the corner column 101, improving the overall structural stability and resistance to dynamic loads. Simultaneously, the combination of concrete and steel structure reduces material costs.

[0060] In specific embodiments, such as Figure 1 and Figure 3 As shown, a top flange 103 is fixedly installed at the upper end of the inner steel cylinder 102, which is suitable for fixing to the upper steel tower section. The top flange 103, located at the upper end of the inner steel cylinder 102, provides a standardized interface for connecting to the upper steel tower section, ensuring a smooth transfer of load from the steel tower section to the transition section. Each corner column 101 has a bottom flange 104 at its lower end, which is suitable for fixing to the lower lattice section. The bottom flange 104, located at the lower end of the corner column 101, facilitates connection to the lower lattice section, achieving modular installation and improving construction efficiency. The top flange 103 and bottom flange 104 have several annularly distributed connection holes as connection bases. This flange connection method is reliable and easy to bolt on-site, reducing welding workload and lowering construction difficulty and quality risks.

[0061] In this embodiment, the segmented transition section structure is composed of at least two rotationally symmetrical splicing structures fixed by a connecting mechanism; each splicing structure includes a corner column 101, an arc-shaped inner steel cylinder 102, and a box-type composite connecting beam.

[0062] As a specific embodiment, the segmented transition section structure includes two splicing structures, each splicing structure including two corner columns 101, half of the inner steel cylinder 102 and two box-type combined connecting beams.

[0063] In specific structural embodiments, such as Figure 1 As shown, the box-type composite connecting beam includes a connecting beam bottom plate 201, a connecting beam top plate 202, a connecting beam web plate 203, and a connecting beam side plate 204. The connecting beam bottom plate 201 and the connecting beam top plate 202 are arranged horizontally and parallel to each other at intervals. The connecting beam web plate 203 and the connecting beam side plate 204 extend vertically. The connecting beam web plate 203 is fixedly connected between the corner column 101 and the inner steel cylinder 102. The lower end of the connecting beam web plate 203 is fixedly connected to the connecting beam bottom plate 201, and the upper end of the connecting beam web plate 203 is fixedly connected to the connecting beam top plate 202. The connecting beam side plate 204 is fixedly connected between the corner column 101 and the inner steel cylinder 102. The lower end of the connecting beam side plate 204 is fixedly connected to the connecting beam bottom plate 201, and the upper end of the connecting beam side plate 204 is fixedly connected to the connecting beam top plate 202.

[0064] The segmented transition section structure provided in this embodiment uses a combined plate structure of connecting beam bottom plate 201, connecting beam top plate 202, connecting beam web plate 203, and connecting beam side plate 204 to form a closed box section. The connecting beam web plate 203 and connecting beam side plate 204 are extended vertically and fixed with the horizontally set connecting beam bottom plate 201 and connecting beam top plate 202, forming a stable frame system, enhancing the local stability of the connecting beam and preventing plate buckling. The box-type combined connecting beam has high bending and torsional stiffness and can effectively transfer complex loads such as bending moment, shear force, and torque between the upper steel tower section and the lower lattice section.

[0065] Furthermore, this modular design facilitates production and quality control, reduces manufacturing difficulty, and provides a reliable foundation for assembling various reinforcing components.

[0066] In a specific embodiment, in a box-type composite connecting beam, such as Figure 3 As shown, there is one web plate 203 for the connecting beam and two side plates 204 for the connecting beam. The web plate 203 is located between the two side plates 204.

[0067] In specific embodiments, such as Figure 3As shown, the extension plane of the web 203 of the coupling beam intersects with the extension plane of the side plate 204 of the coupling beam; the web 203 of the coupling beam is located between the two side plates 204 of the coupling beam, and its extension plane intersects with the side plates 204 of the coupling beam, forming a cross-support effect, which improves the lateral stiffness and shear strength of the box-type composite coupling beam.

[0068] In specific embodiments, such as Figure 1 As shown, the web 203 of the coupling beam protrudes from the upper end face of the top plate 202 of the coupling beam. Protruding the web 203 from the upper end face of the top plate 202 increases the connection area between the coupling beam and the superstructure, improving the continuity of load transfer and reducing stress concentration at the connection point.

[0069] The above scheme optimizes the force flow path inside the connecting beam, making the load more evenly distributed to the corner column 101 and the inner steel cylinder 102, thus improving the structural efficiency.

[0070] In a specific embodiment, the bottom plate 201, top plate 202, web plate 203, and side plate 204 of the connecting beam are fixedly installed on the side away from the inner steel cylinder 102 and the outer ring 1012 respectively, so as to realize the rigid connection between the box-type combined connecting beam and the corner column 101 and ensure the rigid strength of the structural force transmission.

[0071] In this embodiment, the transition section structure further includes a bottom reinforcing component, a top reinforcing component, and a vertical reinforcing component; wherein the bottom reinforcing component and the top reinforcing component serve as horizontal reinforcing parts, and the vertical reinforcing component serves as vertical reinforcing parts.

[0072] In a specific embodiment, the bottom reinforcing component is fixedly installed on the bottom side of the corner column 101 connecting the box-type combined beam and the inner steel cylinder 102, as well as on the bottom side of the inner cavity of the inner steel cylinder 102.

[0073] Specifically, such as Figure 1 and Figure 2 As shown, the bottom reinforcing assembly includes a first bottom reinforcing plate 301, a second bottom reinforcing plate 302, and a third bottom reinforcing plate 303. The first bottom reinforcing plate 301 is fixedly connected to the inner steel cylinder 102 and the bottom plate 201 of the connecting beams of two adjacent box-type composite connecting beams. The first bottom reinforcing plate 301 is horizontally arranged and at the same horizontal height as the bottom plate 201 of the connecting beams. The second bottom reinforcing plate 302 is fixedly connected to the corner column 101 and the bottom plate 201 of the connecting beams. The second bottom reinforcing plate 302 is horizontally arranged and at the same horizontal height as the bottom plate 201 of the connecting beams. The second bottom reinforcing plate 302 and the first bottom reinforcing plate 301 are spaced apart. The third bottom reinforcing plate 303 is fixedly arranged in a ring inside the inner steel cylinder 102. The third bottom reinforcing plate 303 is horizontally arranged and at the same horizontal height as the first bottom reinforcing plate 301.

[0074] The first bottom reinforcing plate 301 horizontally connects the inner steel cylinder 102 to the bottom plate 201 of the connecting beams of the two adjacent box-type composite beams, enhancing the integrity of the bottom horizontal plane and allowing the load to be evenly transferred from the bottom plate 201 to the inner steel cylinder 102. The second bottom reinforcing plate 302 horizontally connects the corner column 101 to the bottom plate 201 of the connecting beams, strengthening the bottom support in the corner column 101 area and preventing local buckling of the corner column 101 under load. The third bottom reinforcing plate 303 is arranged in a ring inside the inner steel cylinder 102, improving the circumferential stiffness of the bottom of the inner steel cylinder 102. Together with the first and second bottom reinforcing plates 301, it forms a complete bottom reinforcing system, improving the compressive and shear resistance of the transition section structure. Setting all reinforcing plates at the same horizontal height as the bottom plate 201 ensures a smooth transition of force flow and reduces stress abrupt changes.

[0075] In a further embodiment, such as Figure 2 As shown, the bottom reinforcing assembly also includes a reinforcing ring plate 304, which is vertically and annularly fixed to the inner edge of the third bottom reinforcing plate 303 away from the inner steel cylinder 102. The reinforcing ring plate 304, vertically and annularly positioned on the inner edge of the third bottom reinforcing plate 303, enhances the edge constraint effect at the bottom of the inner steel cylinder 102, preventing radial deformation of the inner steel cylinder 102 under internal loads. As an additional auxiliary reinforcing structural component, the reinforcing ring plate 304 can reduce the risk of fatigue damage in the welded area at the bottom of the overall segmented transition section structure.

[0076] In addition, the reinforcing ring plate 304 and the third bottom reinforcing plate 303 can form an L-shaped composite section, which improves the local stiffness and stability of the bottom of the inner steel cylinder 102 and is suitable for resisting internal pressure or uneven loads.

[0077] In a specific embodiment, the top reinforcing component and the bottom reinforcing component are arranged alternately. The top reinforcing component is fixedly installed on the top side of the box-type combined beam connecting corner column 101 and inner steel cylinder 102, and on the top side of the inner cavity of the inner steel cylinder 102.

[0078] Specifically, such as Figure 1 and Figure 2As shown, the top reinforcing assembly includes a first top reinforcing plate 401, a second top reinforcing plate 402, and a third top reinforcing plate 403. The first top reinforcing plate 401 is fixedly connected to the inner steel cylinder 102 and the top plate 202 of the connecting beams of two adjacent box-type composite connecting beams. The first top reinforcing plate 401 is horizontally arranged and spaced apart from the first bottom reinforcing plate 301. The first top reinforcing plate 401 and the top plate 202 of the connecting beams are at the same horizontal height. The second top reinforcing plate 402 is fixedly connected to the corner column 101 and the top plate 202 of the connecting beams. The second top reinforcing plate 402 is horizontally arranged and at the same horizontal height as the top plate 202 of the connecting beams. The second top reinforcing plate 402 and the first top reinforcing plate 401 are spaced apart. The third top reinforcing plate 403 is fixedly arranged in a ring inside the inner steel cylinder 102. The third top reinforcing plate 403 is horizontally arranged and at the same horizontal height as the top plate 202 of the connecting beams.

[0079] The top and bottom reinforcing components are symmetrically spaced, forming a double-layer reinforcement structure for the transition section, effectively constraining the deformation of the top and bottom of the overall structure and improving the overall bending resistance. The first top reinforcing plate 401 connects the inner steel cylinder 102 to the top plate 202 of the connecting beam, and the second top reinforcing plate 402 connects the corner column 101 to the top plate 202 of the connecting beam, ensuring that the upper load is evenly transferred from the steel tower section to the corner column 101 and the inner steel cylinder 102 through the top plates. The third top reinforcing plate 403 is arranged in a ring inside the inner steel cylinder 102, working together with the third bottom reinforcing plate 303 to maintain the vertical stability of the inner steel cylinder 102 and reduce stress concentration on the inner side of the inner steel cylinder 102. This design allows for a more rational distribution of force flow under vertical loads in the transition section, avoiding the problem of a weak top caused by traditional compact layouts.

[0080] In a specific embodiment, the vertical reinforcing components are fixedly installed on the outer periphery of the inner steel cylinder 102 and on the box-type composite connecting beam.

[0081] Specifically, such as Figure 1 and Figure 3 As shown, the vertical reinforcement assembly includes a first vertical reinforcement plate 501 and a second vertical reinforcement plate 502; the first vertical reinforcement plate 501 is vertically fixed to the outer periphery of the inner steel cylinder 102, and the first vertical reinforcement plate 501 is fixedly disposed between the first top reinforcement plate 401 and the first bottom reinforcement plate 301; the first vertical reinforcement plate 501 is fixed to the outer periphery of the inner steel cylinder 102 and connects the first top and bottom reinforcement plates to enhance the vertical stiffness and anti-torsion ability of the inner steel cylinder 102, which can significantly improve the performance of the inner steel cylinder 102 under bending moment.

[0082] The second vertical reinforcing plate 502 is vertically fixed to the inner wall of the connecting beam side plate 204, and is fixedly disposed between the connecting beam bottom plate 201 and the connecting beam top plate 202. The second vertical reinforcing plate 502 is fixed to the inner side of the connecting beam side plate 204, which extends the effective support length of the connecting beam side plate 204, improves the local stability of the connecting beam, and prevents the side plate from becoming unstable under pressure.

[0083] The segmented transition section structure provided in this embodiment uses bottom and top reinforcing components as horizontal reinforcing components, which, together with vertical reinforcing components, form a spatial grid reinforcement system. This system can comprehensively improve the three-dimensional structural stiffness of the transition section structure and optimize the dynamic response and fatigue life of the overall structure.

[0084] In specific embodiments, such as Figure 1 As shown, the connecting mechanism includes an outer cover plate assembly 601, an inner cover plate assembly 602, and multiple locking components (not shown in the figure). The outer cover plate assembly 601 and the inner cover plate assembly 602 are each provided with multiple cover plate components, and the locking components are used to fix the cover plate components to the inner steel cylinder 102. The outer cover plate assembly 601 is located at the joint of the outer walls of the two splicing structures, covering the joint of the outer walls of the arc-shaped inner steel cylinder 102 in each splicing structure; the inner cover plate assembly 602 is located at the joint of the inner walls of the two splicing structures, covering the joint of the inner walls of the arc-shaped inner steel cylinder 102 in each splicing structure.

[0085] The outer cover plate assembly 601 and the inner cover plate assembly 602 respectively cover the joint between the outer and inner walls of the spliced ​​structure, especially the joint of the inner steel cylinder 102, forming a double sealing and reinforcement layer, ensuring the continuity and integrity of the segmented structure at the joint.

[0086] Of course, the outer cover plate assembly 601 can also cover the outer wall joint of the curved top flange 103; the inner cover plate assembly 602 can also cover the inner wall joint of the curved top flange 103. This strengthens the joint of the top flange 103 and ensures the connection strength of the overall structure.

[0087] The cover plate is secured to the inner steel cylinder 102 by multiple locking components, providing a detachable rigid connection that facilitates on-site adjustment and assembly, ensuring reliable connection strength. This connection mechanism avoids the weak connection problem common in segmented designs, enabling the segmented transition section to have a load-bearing capacity comparable to the integral structure after assembly, without requiring additional reinforcement, thus reducing material consumption and complexity.

[0088] In a specific embodiment, the cover plate is configured as a rigid plate and the locking component is configured as a high-strength bolt.

[0089] In a preferred embodiment, the thickness of the cover plate is not less than half the radial thickness of the inner steel cylinder 102 to ensure that the cover plate has sufficient strength and rigidity to transfer the stress at the joint and avoid the cover plate becoming a weak point in the structure due to being too thin. This thickness design allows the cover plate to effectively share the load of the inner steel cylinder 102 after locking, reducing the stress concentration factor at the joint and ensuring the fatigue life of the joint.

[0090] The segmented transition section structure provided in this embodiment solves the transportation size limitation problem by designing the transition section structure as two or more rotationally symmetrical splicing structures. The size of each splicing structure is reduced, meeting the transportation clearance requirements of highways, railways, etc., and reducing the difficulty and cost of long-distance or complex route transportation. This segmented design allows for factory prefabrication of splicing structures and on-site assembly through connecting mechanisms, improving construction flexibility and efficiency, and avoiding the disadvantages of inconvenient transportation of integral structures. The coordinated setting of bottom reinforcing components, top reinforcing components, and vertical reinforcing components enhances the overall stiffness and stability of the transition section structure. The bottom reinforcing components strengthen the bottom shear resistance at the connection between the corner column 101 and the inner steel cylinder 102, the top reinforcing components improve the load transfer path, and the vertical reinforcing components suppress lateral deformation, collectively reducing stress concentration. This significantly optimizes the stress distribution in the joint area of ​​the corner column 101, the inner steel cylinder 102, and the box-type composite beam, avoiding the problem of excessive material use to reinforce stress concentration areas in the traditional way while ensuring structural safety, thus improving material utilization efficiency and reducing construction costs.

[0091] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A segmental transition structure for connecting an upper steel tower segment and a lower lattice segment, characterized in that, The segment transition section structure comprises corner columns (101), inner steel cylinders (102), and box-type combined beams; each corner column (101) is fixedly arranged with the inner steel cylinder (102) through a box-type combined beam, and the corner columns (101) and the box-type combined beams are arranged in groups in a ring shape on the outer circumferential side of the inner steel cylinder (102); The segment transition section structure is fixedly composed of at least two rotationally symmetrical splicing structures through a connecting mechanism; each splicing structure comprises corner columns (101), arc-shaped inner steel cylinders (102), and box-type combined beams; The transition section structure further comprises: a bottom reinforcing assembly fixedly arranged on the bottom side of the box-type combined beam connecting the corner column (101) and the inner steel cylinder (102) and the bottom side of the inner cavity of the inner steel cylinder (102); a top reinforcing assembly arranged in a spaced manner with the bottom reinforcing assembly, the top reinforcing assembly being fixedly arranged on the top side of the box-type combined beam connecting the corner column (101) and the inner steel cylinder (102) and the top side of the inner cavity of the inner steel cylinder (102); and a vertical reinforcing assembly fixedly arranged on the outer circumferential side of the inner steel cylinder (102) and the box-type combined beam; The box-type combined beam comprises a beam bottom plate (201), a beam top plate (202), a beam web (203), and a beam side plate (204); the beam bottom plate (201) and the beam top plate (202) are horizontally arranged and arranged in parallel in a spaced manner; the beam web (203) and the beam side plate (204) are arranged in an extending manner in a vertical direction; the beam web (203) is fixedly connected between the corner column (101) and the inner steel cylinder (102), the lower end of the beam web (203) is fixedly arranged with the beam bottom plate (201), and the upper end of the beam web (203) is fixedly arranged with the beam top plate (202); the beam side plate (204) is fixedly connected between the corner column (101) and the inner steel cylinder (102), the lower end of the beam side plate (204) is fixedly arranged with the beam bottom plate (201), and the upper end of the beam side plate (204) is fixedly arranged with the beam top plate (202); The bottom reinforcing assembly comprises a first bottom reinforcing plate (301), a second bottom reinforcing plate (302), and a third bottom reinforcing plate (303); The first bottom reinforcing plate (301) is fixedly connected with the inner steel cylinder (102) and the beam bottom plates (201) of two adjacent box-type combined beams, the first bottom reinforcing plate (301) is arranged horizontally and is located at the same horizontal height as the beam bottom plates (201); The second bottom reinforcing plate (302) is fixedly connected with the corner column (101) and the beam bottom plate (201), the second bottom reinforcing plate (302) is arranged horizontally and is located at the same horizontal height as the beam bottom plate (201), and the second bottom reinforcing plate (302) is arranged in a spaced manner with the first bottom reinforcing plate (301); The third bottom reinforcing plate (303) is fixed and arranged annularly inside the inner steel cylinder (102), and the third bottom reinforcing plate (303) is arranged horizontally and at the same horizontal height as the first bottom reinforcing plate (301); The bottom reinforcing assembly further comprises a reinforcing ring plate (304) which is fixed and arranged annularly vertically on the side away from the inner edge of the third bottom reinforcing plate (303).

2. The sharded transit segment structure of claim 1, wherein, In a box-type combined beam, the beam web (203) is provided with one, the beam side plate (204) is provided with two, the beam web (203) is located between the two beam side plates (204), and the extension plane of the beam web (203) intersects the extension plane of the beam side plate (204); the beam web (203) protrudes from the upper end surface of the beam top plate (202).

3. The sharded transit segment structure of claim 1, wherein, The top reinforcing assembly comprises a first top reinforcing plate (401), a second top reinforcing plate (402) and a third top reinforcing plate (403); The first top reinforcing plate (401) is fixedly connected with the inner steel cylinder (102) and the beam top plate (202) of two adjacent box-type combined beams, the first top reinforcing plate (401) is arranged horizontally and is spaced apart from the first bottom reinforcing plate (301), and the first top reinforcing plate (401) is at the same horizontal height as the beam top plate (202); The second top reinforcing plate (402) is fixedly connected with the angle column (101) and the beam top plate (202), the second top reinforcing plate (402) is arranged horizontally and at the same horizontal height as the beam top plate (202), and the second top reinforcing plate (402) is spaced apart from the first top reinforcing plate (401); The third top reinforcing plate (403) is fixed and arranged annularly inside the inner steel cylinder (102), and the third top reinforcing plate (403) is arranged horizontally and at the same horizontal height as the beam top plate (202).

4. The sharded switch fabric of claim 3, wherein, The vertical reinforcing assembly comprises a first vertical reinforcing plate (501) and a second vertical reinforcing plate (502); The first vertical reinforcing plate (501) is fixed vertically on the outer circumferential side of the inner steel cylinder (102), and the first vertical reinforcing plate (501) is fixedly arranged between the first top reinforcing plate (401) and the first bottom reinforcing plate (301); The second vertical reinforcing plate (502) is fixed vertically on the inner side wall surface of the beam side plate (204), and the second vertical reinforcing plate (502) is fixedly arranged between the beam bottom plate (201) and the beam top plate (202).

5. The sharded transit segment structure of any of claims 1-4, wherein, The connecting mechanism comprises an outer cover plate assembly (601), an inner cover plate assembly (602) and a plurality of locking members; The outer cover plate assembly (601) is arranged at the outer wall abutment of two spliced structures, and covers at least the outer wall abutment of the arc-shaped inner steel cylinder (102) in each spliced structure; The inner cover plate assembly (602) is arranged at the inner wall abutment of two spliced structures, and covers at least the inner wall abutment of the inner steel cylinder (102) with an arc design in each spliced structure; The outer cover plate assembly (601) and the inner cover plate assembly (602) are respectively provided with a plurality of cover plate pieces, and the locking pieces are used to fix the cover plate pieces and the inner steel cylinder (102).

6. The sharded transit segment structure of claim 5, wherein, The thickness of the cover plate piece is not less than half of the radial thickness of the inner steel cylinder (102).

7. The slice transiter structure of any of claims 1-4, wherein, Each of the corner columns (101) comprises an inner ring part (1011), an outer ring part (1012) and a plurality of rib plate parts (1013); the inner ring part (1011) is coaxially sleeved in the outer ring part (1012), and the plurality of rib plate parts (1013) are annularly distributed and fixed between the inner ring part (1011) and the outer ring part (1012); the inner cavity of the inner ring part (1011) is suitable for passing through a steel strand; the inner ring part (1011), the outer ring part (1012) and the rib plate part (1013) jointly divide to form a plurality of cavities, and the cavities are used to pour and fill concrete.

8. The sharded transit segment structure of any of claims 1-4, wherein, The inner steel cylinder (102) is fixedly provided with a top flange (103) at the upper end, and the top flange (103) is suitable for being fixed with an upper steel tower section. The lower end of each of the corner columns (101) is provided with a bottom flange (104), and the bottom flange (104) is suitable for being fixed with a lower lattice section.

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