Concrete-filled steel tube supporting structure based on mechanical energy storage
By adopting a steel-concrete composite frame combined with X- and Y-direction support structures, the problems of insufficient lateral stiffness and low seismic performance of existing mechanical energy storage devices have been solved, achieving efficient energy storage and improved structural stability.
Patent Information
- Application Number
- CN202423137049.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-19
AI Technical Summary
Existing mechanical energy storage devices use reinforced concrete frame structures, which have problems such as weak lateral stiffness, insufficient load-bearing capacity, and low seismic performance. Furthermore, current national building standards limit their height, resulting in low energy density.
The steel-concrete composite frame structure is adopted, combined with ordinary and key support structures in the X and Y directions. The stability of the connection nodes is enhanced by continuous cross bracing and U-shaped structure, forming a steel-concrete composite frame-shear wall structure, which improves the overall stiffness and seismic performance.
It improves the compressive strength and deformation performance of mechanical energy storage devices, reduces self-weight, reduces seismic response, enhances structural stability, prevents collapse, and significantly improves seismic performance.
Smart Images
Figure CN223548759U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical energy storage technology, specifically to a steel-concrete composite support structure based on mechanical energy storage. Background Technology
[0002] With increasing global environmental awareness, people's energy demand is shifting towards clean and sustainable energy. Mechanical energy storage, as a clean and sustainable energy storage technology, not only meets people's daily energy needs but also aligns with their environmental consciousness, further promoting its development and application.
[0003] Existing mechanical energy storage devices generally employ reinforced concrete frame structures. However, current national building standards limit the height of reinforced concrete frame structures to 50 meters. For mechanical energy storage devices, whose energy density is relatively low, this means a greater space and weight are required to store sufficient energy, necessitating a height exceeding 50 meters for optimal performance. To improve the stability of mechanical energy storage devices within their height range, shear wall structures are typically placed on the reinforced concrete frame, forming a reinforced concrete frame-shear wall structure. This complies with the current national building standards' height limit of 110 meters for reinforced concrete frame-shear wall structures. However, reinforced concrete frame-shear wall structures suffer from weak lateral stiffness, insufficient load-bearing capacity, and low seismic performance. Utility Model Content
[0004] In view of the problems existing in the prior art, this utility model provides a steel tube concrete support structure based on mechanical energy storage.
[0005] To achieve the above technical objectives, this utility model adopts the following technical solution: a steel-concrete composite support structure based on mechanical energy storage, comprising: a steel-concrete composite frame, an X-direction ordinary support structure, an X-direction critical support structure, a Y-direction ordinary support structure, and a Y-direction critical support structure; the steel-concrete composite frame forms the frame structure of the mechanical energy storage device, the middle position of the mechanical energy storage device is a maintenance area, X-direction ordinary support structures are provided at the X-direction side spans of the mechanical energy storage device and in the X-direction of the maintenance area, the X-direction ordinary support structures are set within the X-direction critical support structures, and both the X-direction ordinary support structures and the X-direction critical support structures are fixedly connected to the steel-concrete composite frame; a Y-direction critical support structure is provided in the Y-direction of the maintenance area, and Y-direction ordinary support structures are provided on both sides of the Y-direction critical support structure.
[0006] Furthermore, the X-direction ordinary support structure consists of four continuous cross braces, which extend from the bottom to the top of the mechanical energy storage device and are fixedly connected to the steel pipe concrete frame.
[0007] Furthermore, the edge of each cross brace is connected to the X-direction side span of the mechanical energy storage device, and the intersection point of each cross brace is located at the floor slab of the frame structure composed of steel tube concrete frame.
[0008] Furthermore, the key support structures in the X direction are all U-shaped structures. The U-shaped structures are located on the X-direction side span of the mechanical energy storage device and are fixedly connected to the steel pipe concrete frame. Each U-shaped structure has a corresponding cross brace.
[0009] Furthermore, there are four key Y-axis support structures distributed along the Y-axis of the maintenance area. Two of the key Y-axis support structures are located on the Y-axis boundary of the maintenance area, and the other two key Y-axis support structures are symmetrically arranged on both sides of the central axis of the mechanical energy storage device.
[0010] Furthermore, each key Y-axis support structure is composed of several intersecting trusses connected end to end.
[0011] Furthermore, the Y-direction ordinary support structure consists of two continuous cross supports located in the energy storage block transportation area of the mechanical energy storage device, and both continuous cross supports are fixedly connected to the steel pipe concrete frame.
[0012] Furthermore, one side edge of each of the two continuous cross supports is fixedly connected to the edge of the maintenance area, and the other side edge of each of the two continuous cross supports is fixedly connected to the Y-direction side span of the mechanical energy storage device; and the intersection point of each cross brace is located at the floor slab of the frame structure composed of steel tube concrete frame.
[0013] Furthermore, the mechanical energy storage device is divided into three parts from top to bottom: a charging area, an energy storage block transportation area, and a discharging area. The charging area refers to the area at the top of the mechanical energy storage device that accommodates all the energy storage blocks. The discharging area refers to the area at the bottom of the mechanical energy storage device that accommodates all the energy storage blocks. The energy storage block transportation area refers to the area in the mechanical energy storage device excluding the charging area and the discharging area.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] (1) The steel-concrete composite support structure based on mechanical energy storage of this utility model adopts a steel-concrete composite frame structure, which combines the advantages of steel pipe and concrete, so that the concrete is constrained by the steel pipe and is in a triaxial stress state, thereby improving the compressive strength and deformation performance of the concrete.
[0016] (2) This utility model adds an X-direction ordinary support structure and a Y-direction ordinary support structure to the steel tube concrete frame structure. Through continuous cross diagonal bracing, the load is effectively dispersed and transferred, the geometric stability of the mechanical energy storage device is maintained, and the overall stiffness is improved.
[0017] (3) This utility model also introduces X-direction key support structure and Y-direction key support structure, thereby improving the stability of its connection node with the steel tube concrete frame, bearing larger loads and providing additional safety protection.
[0018] In summary, the steel-concrete composite support structure based on mechanical energy storage of this invention can reduce the seismic response of mechanical energy storage devices, decrease the vibration amplitude and acceleration of mechanical energy storage devices during earthquakes, thereby protecting mechanical energy storage devices from collapse during earthquakes and significantly improving their seismic performance. Attached Figure Description
[0019] Figure 1 This is a three-dimensional isometric view of the steel-concrete composite support structure based on mechanical energy storage according to this utility model.
[0020] Figure 2 This is a top view of the steel-concrete composite support structure based on mechanical energy storage according to this utility model;
[0021] Figure 3 This is a schematic diagram of the steel-concrete composite support structure based on mechanical energy storage according to this utility model in the X direction.
[0022] Figure 4 This is a schematic diagram of the steel-concrete composite support structure based on mechanical energy storage according to this utility model in the Y direction.
[0023] Among them, 1-steel tube concrete frame, 2-X-direction ordinary support structure, 3-X-direction critical support structure, 4-Y-direction ordinary support structure, 5-Y-direction critical support structure, 6-maintenance area. Detailed Implementation
[0024] The technical solution of this utility model will be further explained below with reference to the accompanying drawings.
[0025] like Figure 1-2This utility model relates to a steel-concrete composite support structure based on mechanical energy storage, comprising: a steel-concrete composite frame 1, an X-direction ordinary support structure 2, an X-direction critical support structure 3, a Y-direction ordinary support structure 4, and a Y-direction critical support structure 5. The steel-concrete composite frame 1 forms the frame structure of the mechanical energy storage device. The steel-concrete composite frame 1 combines the advantages of steel pipe and concrete, so that the concrete is constrained by the steel pipe and is in a triaxial stress state, thereby improving the compressive strength and deformation performance of the concrete. The middle position of the mechanical energy storage device is the maintenance area 6. X-direction ordinary support structures 2 are provided at the X-direction side span of the mechanical energy storage device and in the X-direction of the maintenance area 6. The X-direction ordinary support structures 2 are set inside the X-direction critical support structures 3, and both the X-direction ordinary support structures 2 and the X-direction critical support structures 3 are fixedly connected to the steel-concrete composite frame 1. A Y-direction critical support structure 5 is provided in the Y-direction of the maintenance area 6, and Y-direction ordinary support structures 4 are provided on both sides of the Y-direction critical support structure 5. This invention adds an X-direction ordinary support structure 2, an X-direction critical support structure 3, a Y-direction ordinary support structure 4, and a Y-direction critical support structure 5 to the steel-concrete composite frame 1. On the one hand, the addition of the support structure design can reduce the cross-sectional area of the steel-concrete composite frame 1, thereby reducing the self-weight of the mechanical energy storage device and ensuring the continuity of lateral stiffness and shear bearing capacity without abrupt changes. On the other hand, it can reduce the seismic response of the mechanical energy storage device, reduce the vibration amplitude and acceleration of the mechanical energy storage device during earthquakes, thereby protecting the mechanical energy storage device from collapse during earthquakes and significantly improving its seismic performance.
[0026] like Figure 3 In this invention, the X-direction ordinary support structure 2 consists of four continuous cross braces. These four continuous cross braces extend from the bottom to the top of the mechanical energy storage device and are fixedly connected to the steel-concrete composite frame 1. The cross braces enhance the structural load-bearing capacity of the mechanical energy storage device, including the static load of the device's own weight and the dynamic load of energy storage block movement or seismic loads. Through these four continuous cross braces, the load is effectively transferred to the frame columns and foundation, thereby ensuring the stability of the entire mechanical energy storage device structure. The edge of each cross brace is connected to the X-direction side span of the mechanical energy storage device, and the intersection point of each cross brace is located at the floor slab of the frame structure composed of the steel-concrete composite frame 1, transferring horizontal forces. The X-direction key support structure 3 is a U-shaped structure. The U-shaped structure is located on the X-direction side span of the mechanical energy storage device and is fixedly connected to the steel-concrete composite frame 1. Each U-shaped structure has a corresponding cross brace. By arranging the X-direction ordinary support structure 2 and the X-direction key support structure 3, the geometric stability of the steel-concrete composite frame structure can be guaranteed, reducing structural deformation, preventing instability, increasing the overall stiffness of the structure, and improving the ability to resist external loads, whether the mechanical energy storage device is in the construction or use stage.
[0027] like Figure 4In this invention, there are four key Y-axis support structures 5, distributed along the Y-axis of the maintenance area 6. Utilizing the maintenance passage space and avoiding the energy storage and transportation area, they are continuously arranged from the bottom to the top of the mechanical energy storage unit to ensure the continuity of force transmission in the Y-axis. Two key Y-axis support structures 5 are located on the Y-axis boundary of the maintenance area 6, and the other two are symmetrically arranged on both sides of the central axis of the mechanical energy storage unit. Each key Y-axis support structure 5 consists of several intersecting trusses connected end-to-end. The ordinary Y-axis support structures 4 are two continuous intersecting supports located in the energy storage block transportation area of the mechanical energy storage unit. Both continuous intersecting supports are fixedly connected to the steel-concrete composite frame. Arranging the ordinary Y-axis support structures 4 on both sides of the key Y-axis support structures 5 forms a more stable and uniform force-bearing system, thereby improving the stability of the entire structure. One edge of each of the two continuous cross braces is fixedly connected to the edge of the maintenance area 6, and the other edge of each of the two continuous cross braces is fixedly connected to the Y-direction side span of the mechanical energy storage device; and the intersection point of each cross brace is located at the floor slab of the frame structure composed of steel tube concrete frame 1, transmitting horizontal force.
[0028] The mechanical energy storage device of this utility model is divided into three parts from top to bottom: a charging area, an energy storage block transportation area, and a discharging area. The charging area refers to the area at the top of the mechanical energy storage device that contains all the energy storage blocks, the discharging area refers to the area at the bottom of the mechanical energy storage device that contains all the energy storage blocks, and the energy storage block transportation area refers to the area in the mechanical energy storage device excluding the charging area and the discharging area.
[0029] The seismic performance analysis of the steel-concrete composite support structure based on mechanical energy storage of this invention is as follows:
[0030] (1) Under minor earthquake and wind load conditions, the steel-concrete composite frame 1 is mainly subjected to repeated tension and compression. Since the seismic force and wind load are relatively small, the steel-concrete composite frame 1 can usually maintain an elastic state and will not undergo significant plastic deformation. Under minor earthquake conditions, the steel-concrete composite frame 1 mainly provides the required lateral stiffness and bearing capacity for the mechanical energy storage device, ensuring the overall stability of the mechanical energy storage device and preventing damage.
[0031] (2) Under moderate earthquake conditions, the seismic action gradually intensifies, and the steel-concrete composite frame 1 begins to enter the elastoplastic stress stage. Plastic hinges are allowed to form at the connection points between the ends of the ordinary support structures, namely the X-direction ordinary support structure 2 and the Y-direction ordinary support structure 4, and the steel-concrete composite frame 1 to absorb and dissipate seismic energy. However, the overall structure of the mechanical energy storage device still maintains good stability. Furthermore, due to the interaction between the steel pipe and the concrete, the failure of the internal concrete of the steel-concrete composite frame 1 changes from brittle failure to plastic failure, thereby improving the ductility and energy dissipation capacity of the ordinary support. This protects the X-direction key support structure 3 and the Y-direction key support structure 5 from the steel-concrete composite frame 1 in the elastic working stage, ensuring that the mechanical energy storage device remains intact and undamaged.
[0032] (3) Under the condition of a major earthquake, the seismic action is extremely strong. The X-direction ordinary support structure 2 and the Y-direction ordinary support structure 4 fully enter the plastic stress stage, allowing the X-direction ordinary support structure 2 and the Y-direction ordinary support structure 4 to resist shear failure. At this time, the steel-concrete composite frame 1, as the main energy dissipation component, consumes most of the seismic energy through plastic deformation. During the plastic deformation process, the interaction between the steel tube and the concrete becomes more significant, and they jointly bear the seismic load. The X-direction key support structure 3 and the Y-direction key support structure 5 begin to enter the elastoplastic stress stage, allowing the connection between the X-direction key support structure 3 and the Y-direction key support structure 5 and the steel-concrete composite frame 1 to generate plastic hinges to absorb and dissipate seismic energy. However, the X-direction key support structure 3 and the Y-direction key support structure 5 still maintain good stability. The X-direction key support structure 3 and the Y-direction key support structure 5 and the steel-concrete composite frame 1 resist shear without yielding and can meet the requirements of slight damage. The mechanical energy storage device is stable and does not break.
[0033] This utility model relates to a steel-concrete composite support structure based on mechanical energy storage. The ordinary support system consists of an X-direction ordinary support structure 2 and a Y-direction ordinary support structure 4, which allows for shear resistance without yielding under moderate earthquakes and energy dissipation failure under major earthquakes. The critical support system consists of an X-direction critical support structure 3 and a Y-direction critical support structure 5, which ensures that the mechanical energy storage device does not collapse even under major earthquakes.
[0034] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should be considered within its protection scope.
Claims
1. A steel-concrete composite support structure based on mechanical energy storage, characterized in that, include: Steel-concrete composite frame, X-direction ordinary bracing structure, X-direction critical bracing structure, Y-direction ordinary bracing structure and Y-direction critical bracing structure; The steel-concrete composite frame forms the frame structure of the mechanical energy storage device. The middle position of the mechanical energy storage device is the maintenance area. X-direction ordinary support structures are provided at the X-direction side spans of the mechanical energy storage device and in the X-direction of the maintenance area. The X-direction ordinary support structures are set inside the X-direction critical support structures, and both the X-direction ordinary support structures and the X-direction critical support structures are fixedly connected to the steel-concrete composite frame. A Y-direction critical support structure is provided in the Y-direction of the maintenance area, and Y-direction ordinary support structures are provided on both sides of the Y-direction critical support structure.
2. The steel-concrete composite support structure based on mechanical energy storage according to claim 1, characterized in that, The X-direction ordinary support structure consists of four continuous cross braces, which extend from the bottom to the top of the mechanical energy storage device and are fixedly connected to the steel pipe concrete frame.
3. A steel-concrete composite support structure based on mechanical energy storage according to claim 2, characterized in that, The edge of each cross brace is connected to the X-direction side span of the mechanical energy storage device, and the intersection of each cross brace is located at the floor slab of the frame structure composed of steel tube concrete frame.
4. A steel-concrete composite support structure based on mechanical energy storage according to claim 3, characterized in that, The key support structures in the X direction are all U-shaped structures. The U-shaped structures are located on the X-direction side span of the mechanical energy storage device and are fixedly connected to the steel pipe concrete frame. Each U-shaped structure has a corresponding cross brace.
5. A steel-concrete composite support structure based on mechanical energy storage according to claim 1, characterized in that, There are four key Y-axis support structures, distributed along the Y-axis of the maintenance area. Two of the key Y-axis support structures are located on the Y-axis boundary of the maintenance area, and the other two key Y-axis support structures are symmetrically arranged on both sides of the central axis of the mechanical energy storage device.
6. A steel-concrete composite support structure based on mechanical energy storage according to claim 5, characterized in that, Each critical support structure in the Y direction consists of several intersecting trusses connected end to end.
7. A steel-concrete composite support structure based on mechanical energy storage according to claim 5, characterized in that, The Y-direction ordinary support structure consists of two continuous cross supports located in the energy storage block transportation area of the mechanical energy storage device, and both continuous cross supports are fixedly connected to the steel pipe concrete frame.
8. A steel-concrete composite support structure based on mechanical energy storage according to claim 7, characterized in that, One edge of each of the two continuous cross braces is fixedly connected to the edge of the maintenance area, and the other edge of each of the two continuous cross braces is fixedly connected to the Y-direction side span of the mechanical energy storage device; and the intersection point of each cross brace is located at the floor slab of the frame structure composed of steel tube concrete frame.
9. A steel-concrete composite support structure based on mechanical energy storage according to claim 7, characterized in that, The mechanical energy storage device is divided into three parts from top to bottom: a charging area, an energy storage block transportation area, and a discharging area. The charging area refers to the area at the top of the mechanical energy storage device that accommodates all the energy storage blocks. The discharging area refers to the area at the bottom of the mechanical energy storage device that accommodates all the energy storage blocks. The energy storage block transportation area refers to the area in the mechanical energy storage device excluding the charging area and the discharging area.