Support structure system for combined large-span air-cooling equipment

Abstract

The present invention provides a support structure system for a combined large-span air-cooling device, which relates to the technical field of equipment support. The support structure system includes: a plurality of concrete-filled steel tubular composite columns arranged at intervals; column top connectors provided at the tops of the concrete-filled steel tubular composite columns and connected to the air-cooling device for transferring the load of the air-cooling device to the concrete-filled steel tubular composite columns; composite column foundations provided at the bottoms of the concrete-filled steel tubular composite columns for providing vertical support to the concrete-filled steel tubular composite columns; and column bracing components provided between every two concrete-filled steel tubular composite columns, including 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 tubular 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 tubular composite columns. The present invention can achieve convenient construction, component standardization and cost controllability while ensuring bearing capacity and durability.

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:

[0004] 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.

[0005] 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.

[0006] 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.

[0007] 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.

[0008] 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

[0009] 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 long-span air-cooling device that can achieve convenient construction, component standardization, and controllable cost 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.

[0010] Additional aspects and advantages of the present invention will be set forth in part in the following description, and in part will be obvious from the description, or may be learned by practice of the present invention.

[0011] According to one aspect of the present invention, there is provided a support structure system for a combined long-span air-cooling device, the support structure system comprising:

[0012] A plurality of concrete-filled steel tubular composite columns, the plurality of concrete-filled steel tubular composite columns being spaced apart;

[0013] A column top connector, disposed at the top end of each of the concrete-filled steel tubular composite columns and connected to the air-cooling device for transferring the load of the air-cooling device to the concrete-filled steel tubular composite columns;

[0014] A composite column foundation, disposed at the bottom of each of the concrete-filled steel tubular composite columns for providing vertical support to the concrete-filled steel tubular composite columns;

[0015] An inter-column support assembly, disposed between every two of the concrete-filled steel tubular composite columns, comprising a box-shaped steel beam and an inverted V-shaped diagonal brace, the box-shaped steel beam being disposed near the top of the concrete-filled steel tubular 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 tubular composite columns.

[0016] In some exemplary embodiments of the present invention, based on the foregoing solution, each of the concrete-filled steel tubular 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.

[0017] 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 lower than C40, the spacing between every two of the concrete-filled steel tubular composite columns is 11-16 meters, and the height is 16-22 meters.

[0018] In some exemplary embodiments of the present invention, based on the foregoing solution, the column top connector comprises:

[0019] A vertical anchor plate, having a "field" - shaped structure, extending from the top end of the concrete-filled steel tubular 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 tubular composite column;

[0020] The supporting top plate, with a thickness of 50 - 80 mm, is connected to the vertical anchoring plate and is used to support the air-cooling equipment.

[0021] In some exemplary embodiments of the present invention, based on the foregoing solution, the cross-sectional area of the supporting top plate is larger than the cross-sectional area of the concrete-filled steel tube composite column.

[0022] In some exemplary embodiments of the present invention, based on the foregoing solution, the composite column foundation includes:

[0023] The short foundation column is integrally formed with the foundation bottom plate, and one end away from the foundation bottom plate extends into the interior of the concrete-filled steel tube composite column.

[0024] The foundation bottom plate, one end away from the short foundation column contacts the ground, and the end surface of the other end is connected to the bottom end of the concrete-filled steel tube composite column.

[0025] In some exemplary embodiments of the present invention, based on the foregoing solution, the short foundation 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, and a plurality of anchoring bolts are evenly distributed on the edge of the circular bolt plate.

[0026] In some exemplary embodiments of the present invention, based on the foregoing solution, 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 through special-shaped connecting plates respectively.

[0027] In some exemplary embodiments of the present invention, based on the foregoing solution, the support structure system further includes:

[0028] The rigid connection ring plate is sleeved on the concrete-filled steel tube composite column and welded to the box-shaped steel beam, and a plurality of vertical stiffening rib plates are evenly arranged on the rigid connection ring plate.

[0029] In some exemplary embodiments of the present invention, based on the foregoing solution, the inverted V-shaped diagonal brace is connected to the concrete-filled steel tube composite column through a weld of the 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.

[0030] From the above technical solutions, it can be seen that the present invention has the following advantages and positive effects:

[0031] 1. Due to the constraint effect of the steel tube on the concrete in the concrete-filled steel tube composite column, the concrete is in a triaxial compression state, so the compressive strength and deformation ability of the concrete can be improved, and thus the entire composite column has a high bearing capacity and can withstand the large vertical load of the long-span air-cooling equipment, thereby ensuring the safety and reliability of the support structure system.

[0032] 2. The setting of the column top connector can ensure the accurate and effective transfer of the load of the air-cooling equipment to the concrete-filled steel tubular column, avoiding problems such as stress concentration and poor transfer during the load transfer process, thereby ensuring the overall mechanical performance of the support structure system;

[0033] 3. The composite column foundation provides stable vertical support for the concrete-filled steel tubular column, enabling the entire support structure system to be firmly located on the foundation, preventing problems such as uneven settlement or inclination of the structure, and thus ensuring the long-term stability of the support structure system;

[0034] 4. The box-shaped steel beam and the inverted V-shaped diagonal brace in the inter-column support assembly act together, which can significantly enhance the lateral stiffness of the support structure system, improve the ability of the support structure system to resist horizontal loads, reduce the lateral displacement of the support structure system under the action of horizontal loads, and thus ensure the normal operation of the air-cooling equipment under various working conditions;

[0035] 5. The inter-column support assembly can coordinate the forces between the concrete-filled steel tubular columns, making the forces on each column more uniform, avoiding premature failure of individual columns due to excessive force, improving the overall performance and durability of the structure, and extending the service life of the structure;

[0036] In summary, the present invention can give full play to the respective advantages of the concrete-filled steel tubular column, the column top connector, the composite column foundation, and the inter-column support assembly. Through reasonable combination and connection, an efficient and stable support structure system is formed, which is suitable for the support requirements of large-span air-cooling equipment and has good technical economy and engineering practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] By referring to the accompanying drawings and describing its exemplary embodiments in detail, the above and other features and advantages of the present invention will become more obvious.

[0038] Figure 1 FIG. is a schematic plan view of an embodiment of the support structure system of the combined large-span air-cooling equipment of the present invention;

[0039] Figure 2 FIG. is a schematic front elevation view of an embodiment of the support structure system of the combined large-span air-cooling equipment of the present invention;

[0040] Figure 3 FIG. is a schematic side elevation view of an embodiment of the support structure system of the combined large-span air-cooling equipment of the present invention;

[0041] Figure 4 FIG. is a schematic structural view of an embodiment of the composite column foundation of the present invention;

[0042] Figure 5 FIG. is a cross-sectional view of an embodiment of the foundation short column of the present invention;

[0043] Figure 6 is a plan view of an embodiment of the circular bolt plate of the present invention;

[0044] Figure 7 is a schematic structural view of an embodiment of the connection between the inverted V-shaped brace and the box-shaped steel beam of the present invention;

[0045] Figure 8 is a schematic structural view of an embodiment of the connection between the inverted V-shaped brace and the circular steel pipe column of the present invention;

[0046] Figure 9 is a schematic structural view of an embodiment of the assembly of the column top connector and the concrete-filled steel tube composite column of the present invention;

[0047] Figure 10 is Figure 9 the top view of.

[0048] Explanation of reference numerals in the drawings

[0049] 1, Concrete-filled steel tube composite column; 2, Box-shaped steel beam; 3, Inverted V-shaped brace; 4, Short foundation column; 5, Foundation bottom plate; 6, Circular bolt plate; 7, Rigid connection ring plate; 8, Vertical anchor plate; 9, Support top plate; 10, Small stud; 11, Core concrete; 12, Reinforcing bar; 13, Outer concrete; 14, Anchor bolt; 15, Additional web; 16, Inner partition; 17, Sealing plate; 18, Leveling bolt; 19, Base plate. Detailed implementation manners

[0050] Now, the exemplary embodiments will be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. Like reference numerals in the figures denote the same or similar structures, and thus their detailed descriptions will be omitted.

[0051] The features, structures or characteristics described above can be combined in any suitable manner in one or more embodiments. If possible, the features discussed in each embodiment are interchangeable. In the above description, many specific details are provided to give a thorough understanding of the embodiments of the present invention. However, those skilled in the art will realize that the technical solutions of the present invention can be practiced without one or more of the specific details, or other methods, components, materials, etc. can be used. In other cases, well-known structures, materials or operations are not shown or described in detail to avoid obscuring aspects of the present invention.

[0052] Although relative terms such as "upper" and "lower" are used in the present invention to describe the relative relationship of one component of an icon to another component, these terms are used in the present invention only for convenience, for example, according to the directions of the examples described in the drawings. It can be understood that if the device of the icon is flipped so that it is upside down, the component described as "upper" will become the component described as "lower". Other relative terms, such as "high", "low", "top", "bottom", "front", "rear", "left", "right", etc. also have similar meanings. When a structure is "on" another structure, it may mean that a structure is integrally formed on another structure, or that a structure is "directly" disposed on another structure, or that a structure is "indirectly" disposed on another structure through another structure.

[0053] In the present invention, the terms "a", "one", "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 mean an open inclusion and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc.

[0054] 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:

[0055] A plurality of concrete-filled steel tubular composite columns 1, the plurality of concrete-filled steel tubular composite columns 1 being spaced apart;

[0056] A column top connector, disposed at the top of each of the concrete-filled steel tubular composite columns 1 and connected to the air-cooling device for transmitting the load of the air-cooling device to the concrete-filled steel tubular composite columns 1;

[0057] A composite column foundation, disposed at the bottom of each of the concrete-filled steel tubular composite columns 1 for providing vertical support to the concrete-filled steel tubular composite columns 1;

[0058] An inter-column support assembly, disposed between every two of the concrete-filled steel tubular composite columns 1, comprising a box-shaped steel beam 2 and an inverted V-shaped diagonal brace 3, the box-shaped steel beam 2 being disposed near the top of the concrete-filled steel tubular composite columns 1, the top of the inverted V-shaped diagonal brace 3 being connected to the box-shaped steel beam 2, and the two bottom ends being respectively connected to two adjacent concrete-filled steel tubular composite columns 1.

[0059] Compared with traditional single-material columns, the spaced-apart arrangement of a plurality of concrete-filled steel tubular composite columns 1 can easily bear the huge vertical load generated by a large-span air-cooling device, effectively ensure the safety and stability of the equipment support structure, and greatly reduce the structural risk caused by insufficient bearing capacity.

[0060] In some embodiments, each concrete-filled steel tube composite column 1 is composed of a circular steel tube filled with core concrete 11 and is used to bear the vertical load and horizontal thrust of the upper air-cooling equipment. In this way, due to the confinement effect of the circular steel tube on the concrete, the concrete is in a triaxial compression state, so the compressive strength and deformation capacity of the concrete can be improved, and thus the entire concrete-filled steel tube composite column 1 has a high bearing capacity and can bear the large vertical load of the long-span air-cooling equipment, thereby ensuring the safety and reliability of the support structure system.

[0061] The present invention does not specifically limit the size of the circular steel tube. In some embodiments, the wall thickness of the circular steel tube 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 tube is between 12 - 25 mm, the circular steel tube can provide strong confinement for the core concrete 11, so that the concrete with a strength grade not lower than C40 (the compressive strength of the concrete cube specimen at 28 days of age ≥ 40 MPa (megapascals), and the guarantee rate ≥ 95%) has a significantly increased compressive strength under triaxial compression.

[0062] 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 force 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 force, thereby improving the durability of the entire structure 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 structure 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, enhancing the ability of the support structure system to operate stably for a long time under complex geological and environmental conditions, 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-cooling equipment under harsh working conditions, and improve the reliability of equipment operation.

[0063] 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 1, 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.

[0064] In some embodiments, a column top connector may be provided, including: a vertical anchor plate 8 having a "田"-shaped structure, extending from the top of the steel tube concrete composite column 1 into the core concrete 11, and extending into the core concrete 11 to a depth not less than 1-1.5 times the diameter of the steel tube concrete composite column 1, for example, 1 times, 1.2 times, 1.35 times, 1.4 times, 1.5 times;

[0065] The support top plate 9 has a thickness of 50-80 mm, for example, 50 mm, 65 mm, 67 mm, 70 mm, 72 mm, 76 mm, 80 mm, etc., and is connected to the vertical anchor plate 8 to support the air cooling equipment.

[0066] The advantage of the "田"-shaped structure is that it ensures that the load transmitted by the supporting top plate 9 can be transmitted to the steel tube concrete composite column 1 from two main directions, corresponding to the horizontal and vertical box-shaped steel beams 2, so that the entire supporting structure system forms a highly adaptive and collaborative mode in force transmission. The thickness of 50-80mm can not only ensure that the top plate itself has good strength and rigidity, effectively bear and disperse the load transmitted from the upper part, but also take into account the economy and construction feasibility. The depth of its extension into the core concrete 11 is not less than 1-1.5 times the diameter of the steel tube concrete composite column 1, which can greatly increase the contact area and anchoring force between the vertical anchor plate 8 and the core concrete 11. This allows 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 steel tube concrete composite column 1 through the vertical anchor plate 8, further optimizing the load transfer path, reducing stress concentration, and improving the reliability and stability of the load transfer of the entire support system.

[0067] The "田"-shaped vertical anchor plate 8 works in conjunction with the supporting top plate 9 to expand the support range for the air-cooling equipment, so that the equipment load can be evenly distributed on the anchor plate and then transmitted to the steel tube concrete composite column 1, thereby avoiding local deformation or damage caused by concentrated support points, effectively ensuring the stability of the air-cooling equipment during operation, and enhancing the reliability of equipment support.

[0068] In addition, the cross-sectional area of the supporting top plate 9 can be set to be larger than that of the concrete-filled steel tube composite 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 sway 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.

[0069] It can also be set that the supporting top plate 9 is 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, due to the possible unevenness of the construction site ground or other influencing factors, by adjusting the leveling bolts 18, the levelness of the air-cooling equipment can be conveniently adjusted to ensure that the air-cooling equipment is in a horizontal state. This not only facilitates the normal operation of the air-cooling equipment and improves its working efficiency, but also avoids problems such as component wear and seal failure caused by the inclination of the air-cooling equipment, and enhances the convenience and accuracy of the installation of the air-cooling equipment. Generally, a backing plate 19 can also be provided 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, avoid damage to the bottom of the air-cooling equipment caused by concentrated stress at the end of the leveling bolts 18, effectively protect the equipment body, and extend its service life.

[0070] The composite column foundation provides stable vertical support for the concrete-filled steel tube composite column 1, enabling the entire supporting structure system to be firmly located on the foundation, preventing problems such as uneven settlement or inclination of the structure, and thus ensuring the long-term stability of the supporting structure system.

[0071] In some embodiments, the composite column foundation can be designed to include:

[0072] A short column 4 of the foundation, integrally formed with the base plate 5, and the end away from the base plate 5 extends into the concrete-filled steel tube composite column 1;

[0073] A base plate 5 of the foundation, the end away from the short column 4 of the foundation contacts the ground, and the end surface of the other end is connected to the bottom end of the concrete-filled steel tube composite column 1.

[0074] The basic short column 4 and the foundation slab 5 are integrally formed (such as by casting), which can ensure the integrity of the foundation part. The basic short column 4 extends into the concrete-filled steel tubular column 1, increasing the connection area and tightness between the two, enabling the load borne by the concrete-filled steel tubular column 1 to be more effectively transferred to the foundation slab 5 and then to the ground by the foundation slab 5. Compared with non-integrally formed or loosely connected structures, the integrally formed and deeply connected method greatly enhances the connection strength at the bottom of the support structure system, effectively preventing problems such as loosening and disconnection in the foundation part, thus significantly improving the stability of the entire structure and being able to better resist the influence of various loads and environmental factors.

[0075] 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 transferred from the basic short column 4 and the concrete-filled steel tubular column 1 can be evenly dispersed into the foundation soil. This helps to reduce the pressure borne per unit area of the foundation soil and avoid uneven settlement of the foundation caused by excessive local pressure, ensuring the stability of the support structure system under vertical loads. At the same time, the connection between the foundation slab 5 and the bottom end of the concrete-filled steel tubular column 1 also makes the load transfer smoother, further optimizing the mechanical properties of the support structure system and extending the service life of the support structure system.

[0076] Under horizontal loads such as earthquakes, the extension of the basic short column 4 into the concrete-filled steel tubular column 1 and the large-area contact between the foundation slab 5 and the ground can work together to increase the lateral displacement resistance of the structure. The firm connection between the basic short column 4 and the concrete-filled steel tubular column 1 can effectively transfer and resist horizontal forces, while the foundation slab 5 restricts the horizontal displacement of the structure through the friction and anchoring effects with the ground. This structural design can improve the overall seismic performance of the support structure system, reduce the risk of damage to the air-cooled equipment and the support structure caused by earthquakes, and ensure the safety of the equipment in the event of disasters such as earthquakes.

[0077] Generally, a circular steel pipe with stud welds and the outer concrete 13 can be designed to form the basic short column 4. The outer diameter of the circular steel pipe is D1, and the outer diameter of the basic short column 4 is D2. It is designed that D2 is 1.2 - 1.4 times of D1. This size design enables the outer concrete 13 to have enough thickness to wrap the circular steel pipe with stud welds, so that the outer concrete 13 can further disperse and bear the load on the basis of the circular steel pipe with stud welds, expanding the load-bearing area of the basic short column 4. When the load is transferred from the concrete-filled steel tubular column 1 to the basic short column 4, through the combined action of the circular steel pipe with stud welds, the small stud welds 10 and the outer concrete 13, the load can be more evenly transferred to the foundation slab 5 and then to the foundation. This optimized load-bearing and force-transferring method effectively reduces the stress concentration phenomenon inside the structure and improves the mechanical properties and reliability of the entire support structure system.

[0078] A number of small studs 10 are evenly welded in multiple layers at equal intervals on the outer side of the circular steel pipe with studs. The number of layers is determined according to the outer diameter of the circular steel pipe with studs. The diameter of the small studs 10 is generally 19 - 26 mm, and the length is generally 100 - 150 mm, with a cylindrical head at the end. These small studs 10 penetrate into the outer concrete 13, which can greatly increase the frictional force and mechanical biting force between the circular steel pipe with studs and the outer concrete 13. When the short column 4 of the foundation bears the load, the small studs 10 can effectively transfer the force received by the circular steel pipe to the outer concrete 13, and at the same time, can also feedback the force of the outer concrete 13 to the circular steel pipe with studs, enabling the two to work together as a whole, avoiding relative slippage between the circular steel pipe with studs and the outer concrete 13, significantly enhancing the connection integrity of the internal structure of the short column 4 of the foundation, and improving the bearing capacity and stability of the short column 4 of the foundation.

[0079] 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 loads from the short column 4 of the foundation and the concrete-filled steel tube composite column 1. A circular bolt plate 6 is arranged at the top of the foundation slab 5, and the lowermost end of the circular steel pipe with studs is welded to it to form a firm connection node, ensuring that the load borne by the circular steel pipe can be reliably transferred to the foundation slab 5. A number of anchor bolts 14 are evenly arranged along the circumferential direction near the outer edge of the circular bolt plate 6. At the same time, vertical stiffening rib plates are arranged at equal intervals between the anchor bolts 14. The anchor bolts 14 are embedded in the foundation slab 5 to further enhance the connection strength between the circular bolt plate 6 and the foundation slab 5, making the connection between the entire foundation part and the concrete-filled steel tube composite column 1 more stable, effectively preventing connection loosening or damage under the action of the load, and improving the reliability of the support structure system.

[0080] During the load transfer process, the vertical stiffening rib plates can effectively disperse the tensile force and shear force borne by the bolts, avoiding bolt failure due to excessive local stress. At the same time, the vertical stiffening rib plates can also enhance the anti-deformation ability of the foundation slab 5 under the circular bolt plate 6, making the foundation slab 5 more evenly stressed when bearing the load, and optimizing the mechanical properties of the entire composite column foundation.

[0081] The box-shaped steel beam 2 and the inverted V-shaped bracing in the column bracing assembly work together, which can significantly enhance the lateral stiffness of the support structure system, improve the ability of the support structure system to resist horizontal loads, reduce the lateral displacement of the support structure system under the action of horizontal loads, and thus ensure the normal operation of the air-cooled equipment under various working conditions. And the column bracing assembly can coordinate the forces between the concrete-filled steel tube composite columns 1, making the forces on each column more uniform, avoiding premature failure of individual columns due to excessive stress, improving the overall performance and durability of the structure, and extending the service life of the structure.

[0082] 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 by a rigid connection ring at a height h from the top of the concrete-filled steel tube column 1 (h is generally taken as 200 - 250 mm). The rigid connection ring plates 7 are arranged in parallel up and down, and are connected to the upper and lower flanges of the box steel beam 2 by groove welding respectively. At the same time, the web of the box steel beam 2 extends outside the circular steel tube for welded connection. To ensure convenient welding and load-bearing 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. At the positions where there is no steel beam, vertical stiffening plates (the plate thickness is generally 12 - 16 mm) are symmetrically arranged on the rigid connection ring plates 7 to overall strengthen the load-bearing capacity of the beam-column connection joint.

[0083] The inverted V-shaped brace 3 is made of a small-diameter hollow seamless steel tube (the pipe diameter is generally 250 - 450 mm). Its lower end is connected to the concrete-filled steel tube column 1 by welding with a special-shaped connecting plate. Specifically, the special-shaped connecting plate extends into the reserved groove of the inverted V-shaped brace 3, and then is welded together with an orthogonal sealing steel plate; its upper end is connected to the lower flange of the box steel beam 2 by welding with a special-shaped connecting plate. The connection method is as described above. The difference is that within the range of the special-shaped connecting plate, additional webs 15 and internal diaphragms 16 are arranged in the box steel beam 2 to strengthen the ultimate load-bearing capacity of this joint area.

[0084] In addition, the included 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-section height of the inclined brace of the inverted V-shaped brace 3 to the diameter of the concrete-filled steel tube column 1 is 1:8 - 1:12. Within this included angle range, when horizontal loads (such as wind force, seismic 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 concrete-filled steel tube column 1 at a more reasonable angle. The horizontal force can be more effectively transmitted to the concrete-filled steel tube column 1, making the force distribution among the columns more uniform, avoiding local columns from being damaged due to excessive horizontal force, and enhancing the load-bearing capacity and stability of the entire support structure system under horizontal load conditions. The ratio of the cross-section height of the inclined brace to the diameter of the concrete-filled steel tube column 1 being 1:8 - 1:12 can ensure that the cross-section size of the inverted V-shaped brace 3 is adapted to the load-bearing capacity of the concrete-filled steel tube column 1. On the premise of meeting the requirements of the overall structural stability, it can avoid waste of materials caused by too large a cross-section of the inclined brace or insufficient load-bearing capacity of the inclined brace due to too small a cross-section. Through this ratio setting, the inverted V-shaped brace 3 can effectively provide lateral support force for the concrete-filled steel tube column 1 without increasing too much structural self-weight, enhance the ability of the structure to resist horizontal loads, and improve the economy and safety of the structure.

[0085] The present invention adopts the form of steel pipe + concrete column, which can overcome the disadvantage that the steel pipe structure is prone to local buckling. This concrete-filled steel tube composite column 1 has a large cross-sectional stiffness and good mechanical properties. Compared with the traditional concrete-filled steel tube columns and beams, the circular steel tube can replace the formwork with a relatively high height by itself. Using plain concrete inside the steel tube saves the longitudinal and transverse reinforcement works. Therefore, the construction process can be greatly simplified and the project cost can be reduced.

[0086] The circular steel tube of the concrete-filled steel tube composite column 1 can be used as a stiffening skeleton to bear the construction load and structural weight during the construction stage. After being prefabricated in the factory, the circular steel tube can be quickly hoisted and installed on site. Therefore, the superstructure is not restricted by winter construction, effectively shortening the construction period.

[0087] It should be understood that the present invention does not limit its application to the detailed structure and arrangement of the components proposed in the present invention. The present invention can have other embodiments and can be implemented and executed in various ways. The foregoing variations and modifications fall within the scope of the present invention. It should be understood that the present invention disclosed and defined herein extends to all alternative combinations of two or more separate features mentioned or apparent in the text and / or drawings. All such 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 to transfer 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 to provide vertical support for 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 tops 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; 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; The column top connectors include: Vertical anchor plates, having a "field" - shaped structure, extending from the tops of the concrete-filled steel tube composite columns 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 columns; Support top plates, with a thickness of 50 - 80 mm, connected to the vertical anchor plates and used to support the air-cooling equipment.

2. The support structure system of the combined large-span air-cooling equipment according to claim 1, 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.

3. The support structure system of the combined large-span air-cooling equipment according to claim 1, 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.

4. The support structure system of the combined large-span air-cooling equipment according to claim 1, characterized in that, The composite column foundations include: Foundation short columns, integrally formed with the foundation bottom plates, and one end far from the foundation bottom plates extends into the concrete-filled steel tube composite columns; Foundation bottom plates, one end far from the foundation short columns contacts the ground, and the other end face is connected to the bottom ends of the concrete-filled steel tube composite columns.

5. The support structure system of the combined large-span air-cooling equipment according to claim 4, characterized in that, The foundation short columns are integrally formed with the outer concrete through stud welding and are embedded in the foundation bottom plates through circular bolt plates. A plurality of anchor bolts are evenly distributed on the edges of the circular bolt plates.

6. The support structure system of the combined large-span air-cooling equipment according to claim 1, characterized in that The inverted V-shaped diagonal braces are hollow seamless steel tubes, which are connected to the concrete-filled steel tube composite columns and box-shaped steel beams respectively through special-shaped connecting plates.

7. The support structure system of the combined long-span air-cooling equipment according to claim 1, characterized in that, The support structure system further includes: Rigid connection ring plates, sleeved on the concrete-filled steel tube composite columns and welded to the box-shaped steel beams. A plurality of vertical stiffening rib plates are evenly arranged on the rigid connection ring plates.

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