Supporting structure system of combined type large-span air cooling equipment

Abstract

The invention provides a supporting structure system of combined type large-span air cooling equipment, and relates to the technical field of equipment supporting, and the supporting structure system comprises a plurality of concrete filled steel tube combination columns which are arranged at intervals; the column top connectors are arranged at the top ends of the concrete-filled steel tube combination columns, are connected with the air cooling equipment and are used for transmitting the load of the air cooling equipment to the concrete-filled steel tube combination columns; the combination column foundations are arranged at the bottoms of the concrete-filled steel tube combination columns and used for providing vertical support for the concrete-filled steel tube combination columns; and the inter-column supporting assemblies are arranged between every two concrete-filled steel tube combination columns and comprise box-shaped steel beams and inverted-V-shaped inclined struts, the box-shaped steel beams are arranged close to the tops of the concrete-filled steel tube combination columns, the top ends of the inverted-V-shaped inclined struts are connected with the box-shaped steel beams, and the two bottom ends of the inverted-V-shaped inclined struts are connected with the two adjacent concrete-filled steel tube combination columns correspondingly. The bearing capacity and durability can be guaranteed, and meanwhile construction convenience, component standardization and cost controllability are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of equipment support, and in particular to a support structure system of combined large-span air cooling equipment. Background Art

[0002] With the continuous expansion of the scale of power plants and the diversification of energy forms, air-cooling equipment, as a key facility in thermal power plants, solar thermal power plants and nuclear power plants, has a direct impact on the stability and economy of equipment operation due to the design and selection of its supporting structure. Air-cooling equipment needs to undertake the cooling function of steam turbine exhaust, and maintain the normal operation of the steam-water circulation system by condensing steam into water. With the continuous increase in the capacity of steam turbine units, the demand for integrated and large-span air-cooling equipment has become increasingly significant, which has put forward higher requirements on the bearing capacity, construction efficiency and cost control of the supporting structure.

[0003] At present, the air-cooling equipment support structures commonly used in the industry mainly include frame-type concrete structures and cantilever reinforced concrete structures. Although such traditional structures have certain bearing capacity, they have the following technical defects in practical applications: Material uniformity: Traditional structures use reinforced concrete as the main material, and its bending stiffness and ductility are difficult to adapt to the load distribution requirements of large-span air-cooling equipment, and the material utilization rate is low.

[0004] Complexity and long construction period: The existing structure relies on on-site casting technology, which also requires formwork and the tying of a large amount of steel bars. The construction process is cumbersome and is significantly restricted by environmental conditions (such as low temperature and rainy season), which leads to an extended construction period and a significant increase in labor and equipment costs.

[0005] Lack of assembly design: Traditional structures make it difficult to achieve standardized prefabrication and rapid installation of components, and cannot meet the requirements of modern industrialized construction for efficient construction and resource conservation.

[0006] Insufficient economy: The formwork consumption is large during the construction process, the steel bar binding is complicated, and the subsequent maintenance cost is high, which is difficult to meet the low-cost demand for large-scale development of power plants.

[0007] The above technical problems limit the application of traditional air-cooled support structures in large-scale and highly integrated scenarios. Therefore, a new support structure system is urgently needed that can ensure bearing capacity and durability while achieving convenient construction, standardized components and controllable costs, so as to meet the dual requirements of modern power plants for efficient construction and long-term stable operation. Summary of the invention

[0008] The object of the present invention is to overcome at least one of the above-mentioned deficiencies of the prior art, and to provide a support structure system for a combined large-span air-cooling device that can achieve construction convenience, component standardization and cost control while ensuring bearing capacity and durability, so as to meet the dual requirements of modern power plants for efficient construction and long-term stable operation.

[0009] Additional aspects and advantages of the present invention will be set forth in part in the following description, and in part will become apparent from the description, or may be learned by practice of the present invention.

[0010] According to one aspect of the present invention, there is provided a support structure system for a combined large-span air-cooling device, the support structure system comprising: a plurality of concrete-filled steel tube composite columns, the plurality of concrete-filled steel tube composite columns being spaced apart; a column top connector, provided at the top end of each of the concrete-filled steel tube composite columns and connected to the air-cooling device for transferring the load of the air-cooling device to the concrete-filled steel tube composite columns; a composite column foundation, provided at the bottom of each of the concrete-filled steel tube composite columns for providing vertical support to the concrete-filled steel tube composite columns; an inter-column support assembly, provided between every two of the concrete-filled steel tube composite columns, comprising a box-shaped steel beam and an inverted V-shaped diagonal brace, the box-shaped steel beam being provided near the top of the concrete-filled steel tube composite column, the top end of the inverted V-shaped diagonal brace being connected to the box-shaped steel beam, and the two bottom ends being respectively connected to two adjacent concrete-filled steel tube composite columns.

[0011] In some exemplary embodiments of the present invention, based on the foregoing solution, each of the concrete-filled steel tube composite columns is composed of a circular steel tube filled with core concrete and is used to bear the vertical load and horizontal thrust of the upper air-cooling device.

[0012] In some exemplary embodiments of the present invention, based on the foregoing solution, the wall thickness of the circular steel tube is 12-25 mm, the strength grade of the core concrete is not less than C40, the spacing between every two of the concrete-filled steel tube composite columns is 11-16 meters, and the height is 16-22 meters.

[0013] In some exemplary embodiments of the present invention, based on the foregoing solution, the column top connector comprises: a vertical anchoring plate, having a "field" - shaped structure, extending from the top end of the concrete-filled steel tube composite column into the core concrete, and the depth of penetration into the core concrete is not less than 1-1.5 times the diameter of the concrete-filled steel tube composite column; a support top plate, with a thickness of 50-80 mm, connected to the vertical anchoring plate for supporting the air-cooling device.

[0014] In some exemplary embodiments of the present invention, based on the above solution, the cross-sectional area of ​​the supporting top plate is greater than the cross-sectional area of ​​the steel tube concrete composite column.

[0015] In some exemplary embodiments of the present invention, based on the above solution, the combined column foundation includes: A foundation short column is formed integrally with the foundation bottom plate, and one end away from the foundation bottom plate extends into the interior of the steel tube concrete composite column; The foundation bottom plate has one end away from the foundation short column in contact with the ground, and the end surface of the other end is connected to the bottom end of the steel tube concrete composite column.

[0016] In some exemplary embodiments of the present invention, based on the aforementioned solution, the foundation short column is integrated with the core concrete by welding nails, and is embedded in the foundation bottom plate by a circular bolt plate, and a plurality of anchor bolts are evenly distributed on the edge of the circular bolt plate.

[0017] In some exemplary embodiments of the present invention, based on the aforementioned solution, the inverted V-shaped brace is a hollow seamless steel tube, which is connected to the steel tube concrete composite column and the box-type steel beam respectively through a special-shaped connecting plate.

[0018] In some exemplary embodiments of the present invention, based on the above solution, the support structure system further includes: The rigid connection ring plate is sleeved on the steel tube concrete composite column and welded to the box-shaped steel beam. A plurality of vertical stiffening rib plates are evenly spaced on the rigid connection ring plate.

[0019] In some example embodiments of the present invention, based on the aforementioned scheme, the inverted V-shaped diagonal brace is connected to the steel tube concrete composite column by a special-shaped connecting plate weld, the angle between the inverted V-shaped diagonal brace and the special-shaped connecting plate is 45°-60°, and the ratio of the diagonal brace section height of the inverted V-shaped diagonal brace to the diameter of the steel tube concrete composite column is 1:8-1:12.

[0020] It can be seen from the above technical solution that the present invention has the following advantages and positive effects: 1. The steel tube concrete composite column is in a three-dimensional compressive state due to the restraint effect of the steel tube on the concrete, which can improve the compressive strength and deformation capacity of the concrete, so that the entire composite column has a higher bearing capacity and can withstand the large vertical load of the large-span air-cooling equipment, thereby ensuring the safety and reliability of the supporting structure system; 2. The setting of the column top connector can ensure that the load of the air-cooling equipment is accurately and effectively transferred to the steel tube concrete composite column, avoiding the problems of stress concentration and poor transfer during the load transfer process, thereby ensuring the overall stress performance of the supporting structure system; 3. The composite column foundation provides stable vertical support for the steel tube concrete composite column, so that the entire supporting structure system can be firmly seated on the foundation, preventing problems such as uneven settlement or tilt of the structure, thereby ensuring the long-term stability of the supporting structure system; 4. The box-shaped steel beams and inverted V-bracing in the inter-column support assembly work together to significantly enhance the lateral stiffness of the support structure system, improve the ability of the support structure system to resist horizontal loads, and reduce the lateral displacement of the support structure system under horizontal loads, thereby ensuring the normal operation of the air-cooling equipment under various working conditions; 5. The inter-column support assembly can coordinate the forces between the steel tube concrete composite columns, making the forces on each column more uniform, avoiding the premature damage of individual columns due to excessive forces, improving the overall performance and durability of the structure, and extending the service life of the structure; In summary, the present invention can give full play to the respective advantages of steel tube concrete composite columns, column top connectors, composite column foundations and inter-column support assemblies, and through reasonable combination and connection, form an efficient and stable support structure system, which is suitable for the support requirements of large-span air-cooling equipment and has good technical economy and engineering practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

[0022] Figure 1 It is a schematic diagram of the plan structure of an implementation method of a support structure system of a combined large-span air cooling device of the present invention; Figure 2 It is a schematic diagram of the front elevation structure of an implementation mode of the support structure system of the combined large-span air cooling equipment of the present invention; Figure 3 It is a side elevation structural schematic diagram of an implementation mode of a supporting structure system of a combined large-span air cooling device of the present invention; Figure 4 It is a structural schematic diagram of an implementation mode of a combined column foundation of the present invention; Figure 5 It is a cross-sectional view of an embodiment of a basic short column of the present invention; Figure 6 is a plan view of an embodiment of a circular bolt plate of the present invention; Figure 7 It is a structural schematic diagram of an embodiment of the connection between an inverted V-shaped diagonal brace and a box-shaped steel beam according to the present invention; Figure 8 It is a structural schematic diagram of an embodiment of the connection between an inverted V-shaped diagonal brace and a round steel pipe column of the present invention; Fig. 9 It is a structural schematic diagram of an embodiment of the assembly of a column top connector and a steel tube concrete composite column of the present invention; Fig.10 yes Fig. 9 Top view of the .

[0023] Description of Reference Numerals 1. Steel tube concrete composite column; 2. Box steel beam; 3. Inverted V-shaped diagonal brace; 4. Foundation short column; 5. Foundation bottom plate; 6. Circular bolt plate; 7. Rigid connection ring plate; 8. Vertical anchor plate; 9. Support top plate; 10. Small weld nails; 11. Core concrete; 12. Reinforcement steel bars; 13. External concrete; 14. Anchor bolts; 15. Additional web; 16. Inner partition; 17. Sealing plate; 18. Leveling bolts; 19. Pad. DETAILED DESCRIPTION

[0024] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0025] The features, structures or characteristics described above may be combined in one or more embodiments in any suitable manner, and if possible, the features discussed in each embodiment are interchangeable. In the above description, many specific details are provided to provide a full understanding of the embodiments of the present invention. However, those skilled in the art will appreciate that the technical solution of the present invention may be practiced without one or more of the specific details, or other methods, components, materials, etc. may be adopted. In other cases, known structures, materials or operations are not shown or described in detail to avoid blurring various aspects of the present invention.

[0026] Although relative terms such as "upper" and "lower" are used in the present invention to describe the relative relationship of one component of the illustration to another component, these terms are used in the present invention only for convenience, such as the orientation of the examples described in the drawings. It is understood that if the device of the illustration is turned over and turned upside down, the component described as being "upper" will become the component "lower". Other relative terms such as "high", "low", "top", "bottom", "front", "back", "left", "right", etc. are also used to have similar meanings. When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0027] In the present invention, the terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising", "including" and "having" are used to express an open-ended inclusion and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc.

[0028] According to one aspect of the present invention, a support structure system for a combined large-span air cooling device is provided, the support structure system comprising: A plurality of steel tube concrete composite columns 1, wherein the plurality of steel tube concrete composite columns 1 are arranged at intervals; A column top connector, disposed at the top of each of the steel tube concrete composite columns 1, connected to the air cooling device, so as to transfer the load of the air cooling device to the steel tube concrete composite column 1; A composite column foundation, arranged at the bottom of each of the steel tube concrete composite columns 1, to provide vertical support for the steel tube concrete composite columns 1; The inter-column support assembly is arranged between every two of the steel tube concrete composite columns 1, and includes a box steel beam 2 and an inverted V-shaped diagonal brace 3. The box steel beam 2 is arranged near the top of the steel tube concrete composite column 1, and the top end of the inverted V-shaped diagonal brace 3 is connected to the box steel beam 2, and the two bottom ends are respectively connected to two adjacent steel tube concrete composite columns 1.

[0029] Compared with traditional single-material columns, multiple steel tube concrete composite columns 1 arranged at intervals can easily withstand the huge vertical loads generated by large-span air-cooling equipment, effectively ensure the safety and stability of the equipment support structure, and significantly reduce the structural risks caused by insufficient load-bearing.

[0030] In some embodiments, each steel tube concrete composite column 1 is composed of a core concrete 11 filled in a circular steel tube, which is used to bear the vertical load and horizontal thrust of the upper air-cooling equipment. In this way, due to the restraining effect of the circular steel tube on the concrete, the concrete is in a three-dimensional compression state, thereby improving the compressive strength and deformation capacity of the concrete, so that the entire steel tube concrete composite column 1 has a higher bearing capacity and can withstand the larger vertical load of the large-span air-cooling equipment, thereby ensuring the safety and reliability of the supporting structure system.

[0031] The present invention does not impose specific restrictions on the dimensions of the circular steel pipe. In some embodiments, the wall thickness of the circular steel pipe can be designed to be 12 - 25 mm. For example, it can be 12 mm, 14 mm, 16 mm, 18 mm, 20 mm, 22 mm, 23 mm, 24 mm, 25 mm, or it can also be 12.5 mm, 13.5 mm, 15.5 mm, 16.2 mm, 21.7 mm, etc. When the wall thickness of the circular steel pipe is between 12 - 25 mm, the circular steel pipe can provide strong confinement for the core concrete 11, enabling the concrete with a strength grade not lower than C40 (the compressive strength of the concrete cube specimen at 28 - day age ≥ 40 MPa (megapascals), and the guarantee rate ≥ 95%) to significantly increase its compressive strength under triaxial compression.

[0032] In addition, the present invention does not limit the column spacing and height of the concrete - filled steel tube composite column 1. In some embodiments, the column spacing of the concrete - filled steel tube composite column 1 is 11 - 16 meters. For example, it can be 11 meters, 12 meters, 13 meters, 14 meters, 15 meters, 16 meters, etc., or it can also be 11.2 meters, 11.6 meters, 13.5 meters, 14.7 meters, etc. The height of the concrete - filled steel tube composite column 1 can be 16 meters, 17 meters, 18 meters, 19 meters, 20 meters, 21 meters, 22 meters, or it can also be 16.5 meters, 17.2 meters, 18.6 meters, 19.3 meters, etc. In this way, on the one hand, due to the reasonable spacing, the forces between columns can be coordinated more efficiently, enabling each column to evenly share the load within the height range of 16 - 22 meters, avoiding premature damage of individual columns due to uneven stress, thereby improving the durability of the entire structural system and extending the service life. On the other hand, this spacing setting in combination with columns with a height of 16 - 22 meters not only makes the entire support structural system more balanced in mechanical distribution, avoiding problems such as unstable structural center of gravity and stress concentration caused by too large or too small spacing and unreasonable height, effectively preventing uneven settlement and inclination, and enhancing the ability of the support structural system to operate stably in complex geological and environmental conditions for a long time, but also when facing horizontal loads such as strong winds and earthquakes, it can effectively reduce the structural lateral displacement, ensure the normal operation of the air - cooled equipment under harsh working conditions, and improve the reliability of equipment operation.

[0033] The setting of the column - top connector can ensure that the load of the air - cooled equipment is accurately and effectively transferred to the concrete - filled steel tube composite column 1, avoiding problems such as stress concentration and unsmooth transfer during the load transfer process, thereby ensuring the overall mechanical performance of the support structural system.

[0034] In some embodiments, it can be set that the column - top connector includes: a vertical anchoring plate 8, having a "field" - shaped structure, extending from the top end of the concrete - filled steel tube composite column 1 into the core concrete 11, and the depth of penetration into the core concrete 11 is not less than 1 - 1.5 times the diameter of the concrete - filled steel tube composite column 1. For example, it can be 1 time, 1.2 times, 1.35 times, 1.4 times, 1.5 times. The supporting top plate 9, with a thickness of 50 - 80 mm, such as 50 mm, 65 mm, 67 mm, 70 mm, 72 mm, 76 mm, 80 mm, etc., is connected to the vertical anchoring plate 8 and is used to support the air-cooling equipment.

[0035] The advantage of the "field" - shaped structure is that it ensures that the load transmitted by the supporting top plate 9 can be transmitted to the concrete-filled steel tubular column 1 in two main directions, corresponding to the transverse and longitudinal box-shaped steel beams 2, enabling the entire supporting structure system to form a highly adaptable and collaborative working mode in force conduction. A thickness of 50 - 80 mm can not only ensure that the top plate itself has good strength and stiffness, effectively承接 and disperse the load from the upper part, but also take into account economy and construction feasibility. Its penetration depth into the core concrete 11 is not less than 1 - 1.5 times the diameter of the concrete-filled steel tubular column 1, which can greatly increase the contact area and anchoring force between the vertical anchoring plate 8 and the core concrete 11. This enables the load transmitted by the air-cooling equipment through the supporting top plate 9 to be more efficiently and stably dispersed to the core concrete 11 inside the concrete-filled steel tubular column 1 through the vertical anchoring plate 8, further optimizing the load transmission path, reducing stress concentration phenomena, and enhancing the reliability and stability of the load transmission of the entire supporting system.

[0036] The "field" - shaped vertical anchoring plate 8 and the supporting top plate 9 work together, which can expand the supporting range of the air-cooling equipment, enable the equipment load to be evenly distributed on the anchoring plate, and then transmitted to the concrete-filled steel tubular column 1, avoiding local deformation or damage caused by concentrated supporting points, effectively ensuring the stability of the air-cooling equipment during operation, and enhancing the reliability of equipment support.

[0037] In addition, the cross-sectional area of the supporting top plate 9 can be set to be larger than the cross-sectional area of the concrete-filled steel tubular column 1. In this way, a larger supporting surface can more evenly disperse the load transmitted by the air-cooling equipment, reduce the deformation or晃动 of the equipment caused by uneven local stress, effectively enhance the supporting stability of the air-cooling equipment, ensure the air-cooling equipment remains stable during operation, and reduce the risk of affecting its performance and service life due to equipment instability.

[0038] It is also possible to set the support top plate 9 to be connected to the air cooling equipment through a plurality of leveling bolts 18. This connection method has strong flexibility and adjustability. When installing the air cooling equipment, since the ground at the construction site may be uneven or affected by other factors, by adjusting the leveling bolts 18, the levelness of the air cooling equipment can be easily adjusted to ensure that the air cooling equipment is in a horizontal state. This is not only conducive to the normal operation of the air cooling equipment and improves its work efficiency, but also avoids problems such as component wear and seal failure caused by the tilt of the air cooling equipment, and improves the convenience and accuracy of the installation of the air cooling equipment. In general, a pad 19 can also be set between the leveling bolts 18 and the air cooling equipment to increase the contact area between the leveling bolts 18 and the air cooling equipment, to avoid the end of the leveling bolts 18 from causing damage to the bottom of the air cooling equipment due to concentrated force, and to effectively protect the equipment body and extend its service life.

[0039] The composite column foundation provides a stable vertical support for the steel tube concrete composite column 1, so that the entire supporting structure system can be firmly seated on the foundation, preventing problems such as uneven settlement or tilting of the structure, thereby ensuring the long-term stability of the supporting structure system.

[0040] In some embodiments, a composite column foundation may be designed to include: The foundation short column 4 is formed integrally with the foundation bottom plate 5, and one end away from the foundation bottom plate 5 extends into the interior of the steel tube concrete composite column 1; The foundation bottom plate 5 has one end away from the foundation short column 4 in contact with the ground, and the end surface of the other end is connected to the bottom end of the steel tube concrete composite column 1.

[0041] The foundation short column 4 and the foundation bottom plate 5 are integrally formed (for example, cast) to ensure the integrity of the foundation part. The foundation short column 4 extends into the interior of the steel tube concrete composite column 1, increasing the connection area and the tightness of the connection between the two, so that the load borne by the steel tube concrete composite column 1 can be more effectively transferred to the foundation bottom plate 5, and then transferred to the ground by the foundation bottom plate 5. Compared with non-integrated or loosely connected structures, the integrated and deeply connected method greatly enhances the connection strength at the bottom of the supporting structure system, effectively preventing the foundation part from loosening, disconnection and other problems, thereby significantly improving the stability of the entire structure and being able to better resist the influence of various loads and environmental factors.

[0042] In addition, it can be seen from this structure that the contact area between the foundation slab 5 and the ground is relatively large, so the load transmitted from the foundation short column 4 and the steel tube concrete composite column 1 can be evenly dispersed into the foundation soil. This helps to reduce the pressure on the unit area of ​​the foundation soil, avoid uneven settlement of the foundation due to excessive local pressure, and ensure the stability of the support structure system under the vertical load. At the same time, the connection between the foundation slab 5 and the bottom end of the steel tube concrete composite column 1 also makes the load transfer smoother, further optimizes the force performance of the support structure system, and extends the service life of the support structure system.

[0043] Under the action of horizontal loads such as earthquakes, the short foundation column 4 extends into the steel tube concrete composite column 1 and the large area of ​​contact between the foundation bottom plate 5 and the ground can work together to increase the structure's ability to resist lateral displacement. The firm connection between the short foundation column 4 and the steel tube concrete composite column 1 can effectively transmit and resist horizontal forces, while the foundation bottom plate 5 limits the horizontal displacement of the structure through friction and anchoring with the ground. This structural design can improve the overall seismic performance of the supporting structure system, reduce the risk of earthquake damage to air cooling equipment and supporting structures, and ensure the safety of equipment in disasters such as earthquakes.

[0044] In general, a round steel pipe with welding nails and an outer concrete 13 can be designed to form a foundation short column 4. The outer diameter of the round steel pipe is D1, and the outer diameter of the foundation short column 4 is D2. It is designed that D2 is 1.2 to 1.4 times of D1. This size design allows the outer concrete 13 to have sufficient thickness to wrap the round steel pipe with welding nails, so that the outer concrete 13 can further disperse and bear the load on the basis of the round steel pipe with welding nails, thereby expanding the force-bearing area of ​​the foundation short column 4. When the load is transferred from the steel tube concrete composite column 1 to the foundation short column 4, the load can be more evenly transferred to the foundation bottom plate 5 and then to the foundation through the joint action of the round steel pipe with welding nails, the small welding nails 10 and the outer concrete 13. This optimized load-bearing and force transmission method effectively reduces the stress concentration phenomenon inside the structure and improves the mechanical properties and reliability of the entire support structure system.

[0045] Multiple layers of small welding nails 10 are uniformly welded at equal intervals on the outside of the round steel pipe with welding nails, and the number of layers is determined according to the outer diameter of the round steel pipe with welding nails. The diameter of the small welding nails 10 is generally 19-26 mm, the length is generally 100-150 mm, and the end is provided with a cylindrical head. These small welding nails 10 penetrate deeply into the outer concrete 13, which can greatly increase the friction and mechanical bite force between the round steel pipe with welding nails and the outer concrete 13. When the foundation short column 4 is subjected to load, the small welding nails 10 can effectively transfer the force exerted on the round steel pipe to the outer concrete 13, and can also feed back the force of the outer concrete 13 to the round steel pipe with welding nails, so that the two can work together to form a whole, avoid the relative slip between the round steel pipe with welding nails and the outer concrete 13, significantly enhance the connection integrity of the internal structure of the foundation short column 4, and improve the bearing capacity and stability of the foundation short column 4.

[0046] The foundation slab 5 can be designed as a rectangular or square plate to increase the contact area with the ground, so as to evenly disperse the load from the foundation short column 4 and the steel tube concrete composite column 1. A circular bolt plate 6 is arranged on the top of the foundation slab 5, and the lowermost end of the round steel pipe with welding nails is welded to it to form a firm connection node, so as to ensure that the load borne by the round steel pipe can be reliably transmitted to the foundation slab 5. A plurality of anchor bolts 14 are evenly arranged along the circumferential direction near the outer edge of the circular bolt plate 6, and vertical stiffening ribs are arranged at equal intervals between the anchor bolts 14. The anchor bolts 14 are buried in the foundation slab 5 to further enhance the connection strength between the circular bolt plate 6 and the foundation slab 5, so that the connection between the entire foundation part and the steel tube concrete composite column 1 is more stable, effectively preventing the connection from loosening or being damaged under the load, and improving the reliability of the supporting structure system.

[0047] In the process of load transfer, the vertical stiffening ribs can effectively disperse the tension and shear force borne by the bolts, and prevent the bolts from being damaged due to excessive local force. At the same time, the vertical stiffening ribs can also enhance the deformation resistance of the foundation bottom plate 5 on the circular bolt plate 6, so that the foundation bottom plate 5 is more evenly stressed when bearing loads, and optimize the stress performance of the entire composite column foundation.

[0048] The box-shaped steel beam 2 and the inverted V brace in the inter-column support assembly work together to significantly enhance the lateral stiffness of the support structure system, improve the ability of the support structure system to resist horizontal loads, and reduce the lateral displacement of the support structure system under horizontal loads, thereby ensuring the normal operation of the air-cooling equipment under various working conditions. The inter-column support assembly can coordinate the forces between the steel tube concrete composite columns 1, making the forces on each column more uniform, avoiding premature damage to individual columns due to excessive forces, improving the overall performance and durability of the structure, and extending the service life of the structure.

[0049] Generally, the box steel beam 2 includes a transverse box steel beam 2 and a longitudinal box steel beam 2. The transverse and longitudinal box steel beams 2 are welded at a distance h from the top of the steel tube concrete composite column 1 through a rigid connection ring (h is generally 200~250mm). The rigid connection ring plate 7 is arranged in parallel with the upper and lower edges, and is respectively connected to the upper and lower flanges of the box steel beam 2 by groove welding. At the same time, the web of the box steel beam 2 extends into the outer side of the round steel tube for welding. In order to ensure the convenience of welding and the bearing capacity requirements, the thickness of the rigid connection ring should be the same as the thickness of the upper and lower flange plates of the box steel beam 2. The rigid connection ring plate 7 is symmetrically provided with vertical stiffening ribs (the plate thickness is generally 12~16mm) where there is no steel beam to strengthen the bearing capacity of the beam-column connection node as a whole.

[0050] The inverted V-shaped brace 3 adopts a hollow small-diameter seamless steel pipe (the pipe diameter is generally 250~450mm), and its lower end is connected to the steel tube concrete composite column 1 through a special-shaped connecting plate weld. Specifically, the special-shaped connecting plate extends into the groove reserved for the inverted V-shaped brace 3, and then is welded together with orthogonal sealing steel plates; its upper end is connected to the lower flange of the box-type steel beam 2 through a special-shaped connecting plate weld. The connection method is as described above, except that within the range of the special-shaped connecting plate, an additional web 15 and an inner partition 16 are arranged in the box-type steel beam 2 to strengthen the ultimate bearing capacity of this node area.

[0051] In addition, the angle between the inverted V-shaped brace 3 and the special-shaped connecting plate can be set to 45°-60°, and the ratio of the cross-sectional height of the inverted V-shaped brace 3 to the diameter of the steel tube concrete composite column 1 is 1:8-1:12. Within this angle range, when horizontal loads (such as wind force, earthquake force, etc.) act, the inverted V-shaped brace 3 can decompose the horizontal force into components along the axial direction and perpendicular to the axial direction of the steel tube concrete composite column 1 at a more reasonable angle, and the horizontal force can be more effectively transmitted to the steel tube concrete composite column 1, so that the force distribution between the columns is more uniform, avoiding damage to local columns due to excessive horizontal forces, and improving the bearing capacity and stability of the entire support structure system under horizontal load conditions. The ratio of the cross-sectional height of the brace to the diameter of the steel tube concrete composite column 1 is 1:8-1:12, which can ensure that the cross-sectional size of the inverted V-shaped brace 3 is compatible with the bearing capacity of the steel tube concrete composite column 1. On the premise of meeting the overall stability requirements of the structure, avoid excessively large cross-sectional areas of the brace to cause material waste, or too small cross-sectional areas to cause insufficient bearing capacity of the brace. Through this proportion setting, the inverted V-shaped diagonal brace 3 can effectively provide lateral support for the steel tube concrete composite column 1 without increasing too much structural deadweight, thereby enhancing the structure's ability to resist horizontal loads and improving the economy and safety of the structure.

[0052] The present invention adopts the form of steel tube + concrete column, which can overcome the disadvantage that the steel tube structure is prone to local buckling. The steel tube concrete composite column 1 has large cross-sectional rigidity and good stress resistance. Compared with traditional steel tube concrete columns and beams, the round steel tube can replace the high-height formwork by itself. The use of plain concrete in the steel tube saves longitudinal and transverse steel bar engineering, thereby greatly simplifying the construction process and reducing the engineering cost.

[0053] The round steel tubes of the steel tube concrete composite column 1 can be used as a rigid skeleton to bear the construction load and structural weight during the construction phase. After being prefabricated in the factory, the round steel tubes can be quickly hoisted and installed on site. Therefore, the upper structure is not affected by the constraints of winter construction, effectively shortening the construction period.

[0054] It should be understood that the present invention does not limit its application to the detailed structure and arrangement of the components proposed by the present invention. The present invention can have other embodiments and can be implemented and executed in a variety of ways. The aforementioned variations and modifications fall within the scope of the present invention. It should be understood that the present invention disclosed and defined by the present invention extends to all alternative combinations of two or more individual features mentioned or evident in the text and / or the accompanying drawings. All these different combinations constitute multiple alternative aspects of the present invention. The embodiments described in the present invention illustrate the best mode known for implementing the present invention and will enable those skilled in the art to utilize the present invention.

Claims

1. A support structure system for a combined large-span air-cooling device, characterized in that: The support structure system includes: A plurality of concrete-filled steel tube composite columns, which are arranged at intervals; Column top connectors, which are arranged at the tops of the concrete-filled steel tube composite columns and are connected to the air-cooling equipment for transferring the load of the air-cooling equipment to the concrete-filled steel tube composite columns; Composite column foundations, which are arranged at the bottoms of the concrete-filled steel tube composite columns for providing vertical support to the concrete-filled steel tube composite columns; Inter-column support components, which are arranged between every two concrete-filled steel tube composite columns and include box-shaped steel beams and inverted V-shaped diagonal braces. The box-shaped steel beams are arranged near the tops of the concrete-filled steel tube composite columns. The top ends of the inverted V-shaped diagonal braces are connected to the box-shaped steel beams, and the two bottom ends are respectively connected to two adjacent concrete-filled steel tube composite columns.

2. The supporting structure system of the combined large-span air cooling equipment according to claim 1 is characterized in that: Each of the concrete-filled steel tube composite columns is composed of a circular steel tube filled with core concrete and is used to bear the vertical load and horizontal thrust of the upper air-cooling equipment.

3. The supporting structure system of the combined large-span air cooling equipment according to claim 2 is characterized in that: The wall thickness of the circular steel tube is 12 - 25 mm, the strength grade of the core concrete is not lower than C40, the spacing between every two concrete-filled steel tube composite columns is 11 - 16 meters, and the height is 16 - 22 meters.

4. The supporting structure system of the combined large-span air cooling equipment according to claim 2 is characterized in that: The column top connector includes: A vertical anchoring plate, having a "field" - shaped structure, extending from the top end of the concrete-filled steel tube composite column into the core concrete, and the depth of penetration into the core concrete is not less than 1 - 1.5 times the diameter of the concrete-filled steel tube composite column; A support top plate, with a thickness of 50 - 80 mm, connected to the vertical anchoring plate for supporting the air-cooling equipment.

5. The supporting structure system of the combined large-span air cooling equipment according to claim 4 is characterized in that: The cross-sectional area of the support top plate is larger than the cross-sectional area of the concrete-filled steel tube composite column.

6. The supporting structure system of the combined large-span air cooling equipment according to claim 1 is characterized in that: The composite column foundation includes: A foundation short column, integrally formed with the foundation bottom plate, and the end away from the foundation bottom plate extends into the interior of the concrete-filled steel tube composite column; A foundation bottom plate, with one end away from the foundation short column in contact with the ground and the other end face connected to the bottom end of the concrete-filled steel tube composite column.

7. The supporting structure system of the combined large-span air cooling equipment according to claim 6 is characterized in that: The foundation short column forms an integral body with the core concrete through stud welding and is embedded in the foundation bottom plate through a circular bolt plate. A plurality of anchoring bolts are evenly distributed on the edge of the circular bolt plate.

8. The supporting structure system of the combined large-span air cooling equipment according to claim 1 is characterized in that: The inverted V-shaped diagonal brace is a hollow seamless steel tube, which is connected to the concrete-filled steel tube composite column and the box-shaped steel beam respectively through special-shaped connecting plates.

9. The supporting structure system of the combined large-span air cooling equipment according to claim 1 is characterized in that: The support structure system further includes: A rigid connection ring plate, sleeved on the concrete-filled steel tube composite column and welded to the box-shaped steel beam. A plurality of vertical stiffening rib plates are evenly arranged on the rigid connection ring plate.

10. The supporting structure system of the combined large-span air cooling equipment according to claim 1, characterized in that: The inverted V-shaped diagonal brace is connected to the concrete-filled steel tube composite column through a weld of a special-shaped connecting plate. The included angle between the inverted V-shaped diagonal brace and the special-shaped connecting plate is 45° - 60°, and the ratio of the height of the cross-section of the diagonal brace of the inverted V-shaped diagonal brace to the diameter of the concrete-filled steel tube composite column is 1:8 - 1:12.

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