Large-span cantilever type multilayer profile steel frame structure
By using diagonal bracing design and zoned concrete pouring, the problem of insufficient stability in large-span cantilever multi-story steel frame structures was solved, achieving better load transfer and stress uniformity, and improving the safety and service life of the building.
Patent Information
- Application Number
- CN202520393835.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-07
AI Technical Summary
Traditional large-span cantilever multi-story steel frame structures have problems such as excessive temporary supports, insufficient shear resistance, and increased risk of structural cracking due to unreasonable pouring methods during construction and use, which affect construction efficiency and safety.
The design employs a diagonal bracing system, including diagonal bracing at 45° angles on the ground section and diagonal bracing at the cantilever section. Concrete is poured in sections to form tension and compression zones, optimizing load transfer and stress uniformity.
It enhances the structure's resistance to bending and shear, reduces the risk of deformation and damage, improves the structure's stability and durability, and adapts to different building functional requirements.
Smart Images
Figure CN223838267U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a large-span cantilever multi-layer steel frame structure, and relates to the field of building structures. Background Technology
[0002] With the development of the construction industry, the demand for large-space, column-free structures is increasing. Large-span cantilever structures are widely used because they can provide sufficient support and span larger spaces. Conventional cantilever frame structures can meet structural bending resistance requirements to a certain extent by increasing the cross-sectional dimensions of the cantilever segment steel. However, many problems exist in the construction and use of large-span cantilever multi-story steel frame structures. For example, excessive temporary support is required in traditional construction processes; simply increasing the horizontal steel frame of the cantilever segment cannot meet the overall shear resistance requirements as the cantilever segment becomes too large; and unreasonable casting methods increase the risk of cracking in the cantilever frame structure. These problems not only affect construction efficiency and cost but also threaten the safety and stability of the structure. Utility Model Content
[0003] This utility model provides a large-span cantilever multi-layer steel frame structure to overcome the shortcomings of insufficient stability in existing large-span cantilever multi-layer steel frame structures.
[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0005] This utility model discloses a large-span cantilever multi-layer steel frame structure, including a ground section steel frame and a cantilever section steel frame that are horizontally spliced together. The ground section steel frame includes vertical steel members, horizontal steel members that are perpendicular to it, and inclined tie rods for the ground section diagonal support.
[0006] The cantilevered steel frame consists of vertical steel members, horizontal steel members perpendicular to them, a tie rod cantilevered section diagonal support that meets one end of the tie rod landing section diagonal support and forms an angle, and a horizontal truss located at the bottom of the horizontal steel members.
[0007] Furthermore, the cantilevered steel frame is divided into a tension zone and a compression zone located below it through stress analysis.
[0008] Furthermore, the pressure zone is provided with stepped concrete pouring.
[0009] Furthermore, the inclined support of the tie rod landing section is inclinedly arranged between two adjacent vertical steel members.
[0010] The beneficial effects achieved by this utility model are as follows: By introducing diagonal supports and setting a 45° diagonal angle and position, the load of the cantilever frame structure can be accurately transferred to the ground-level frame structure. In the case of large spans, it effectively disperses external loads, greatly enhances the structure's bending and shear resistance, and ensures that the entire structure maintains a stable mechanical state. Compared with traditional cantilever frame structures, it can better resist various complex loads, reduce the risk of deformation and damage caused by uneven stress, and ensure the safety of the building during use. The large-span cantilever multi-story steel frame structure system is composed of concrete, steel bars, horizontal trusses, steel beams, and U-shaped steel beams. This diversified material combination and reasonable structural design enable it to adapt to different building functional requirements and site conditions. Whether it is a large commercial building, a stadium, or a public cultural facility, or any building type that requires a large space and column-free structure, this structural system can provide reliable structural support for the building due to its good mechanical properties and stability. By optimizing the structural system, the stress on the structure is more uniform during concrete pouring, effectively reducing cracks caused by temperature changes, concrete shrinkage, and other factors, thus improving the durability and service life of the structure. Attached Figure Description
[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0012] Figure 1 This is a schematic diagram of the planar structure of this utility model;
[0013] Figure 2 This is a utility model Figure 1 Schematic diagram of the cross section at point AA;
[0014] Figure 3 This is a cross-sectional schematic diagram showing the boundary between the tension region and the compression region of this utility model;
[0015] Figure 4 This is a cross-sectional schematic diagram of the stepped concrete pouring in the pressure zone of this utility model.
[0016] In the diagram: 1. Ground-mounted steel frame; 2. Cantilevered steel frame; 3.1. Compression strut diagonal brace for cantilevered section; 3.2. Vertical steel member; 3.3. Horizontal steel member; 3.4. Tie strut diagonal brace for cantilevered section; 3.5. Horizontal truss; 3.6. Tie strut ground-mounted diagonal brace; 4.1. Tension zone; 4.2. Compression zone; 5.1. Stepped concrete pouring. Detailed Implementation
[0017] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0018] Example 1
[0019] like Figures 1-4 As shown, a large-span cantilever multi-layer steel frame structure includes a ground section steel frame 1 and a cantilever section steel frame 2 that are horizontally spliced together. The ground section steel frame 1 includes a vertical steel member 3.2, a horizontal steel member 3.3 that is perpendicular to it, and an inclined tie rod ground section diagonal support 3.6.
[0020] The cantilevered steel frame 2 consists of a vertical steel member 3.2, a horizontal steel member 3.3 perpendicular to it, a tie rod cantilevered section diagonal support 3.4 that meets one end of the tie rod landing section diagonal support 3.6 and forms an angle, and a horizontal truss 3.5 located at the bottom of the horizontal steel member 3.3.
[0021] The tie rod landing section diagonal support 3.6 and the tie rod cantilever section diagonal support 3.4 are set at a 45° angle to each other.
[0022] After stress analysis, the cantilevered steel frame 2 is divided into a tension zone 4.1 and a compression zone 4.2 located below it. First, the stepped concrete pouring 5.1 in the compression zone 4.2 is carried out, and finally the remaining concrete is poured.
[0023] The implementation process of the large-span cantilever multi-story steel frame structure system is as follows:
[0024] Step 1: Hoist the ground section steel frame 1 and the cantilever section steel frame 2, pour concrete, and then hoist the cantilever section horizontal truss 3.5, horizontal steel components 3.3 and vertical steel components 3.2.
[0025] Step 2: Based on the stress condition of the cantilever section's inclined support, the cantilever section is divided into a tension zone 4.1 and a compression zone 4.2.
[0026] Step 3: Pour the concrete in the compression zone of the cantilever section in a stepped manner.
[0027] Step four: After the relevant loads on the cantilever section have been applied and stabilized, pour the remaining concrete for the cantilever section.
[0028] It should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The terminology used in the description of this application is only for describing specific embodiments and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings indicate similar items, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0029] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0030] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
Claims
1. A large-span cantilever multi-layer steel frame structure, characterized in that, This includes horizontally spliced ground-mounted steel frames and cantilevered steel frames; The ground section steel frame includes vertical steel members, horizontal steel members perpendicular to it, and inclined tie rod ground section diagonal supports. The cantilevered steel frame consists of vertical steel members, horizontal steel members perpendicular to them, a tie rod cantilevered section diagonal support that meets one end of the tie rod landing section diagonal support and forms an angle, and a horizontal truss located at the bottom of the horizontal steel members.
2. The large-span cantilever multi-layer steel frame structure according to claim 1, characterized in that, The cantilevered steel frame is divided into a tension zone and a compression zone located below it through stress analysis.
3. The large-span cantilever multi-layer steel frame structure according to claim 2, characterized in that, The pressure zone is equipped with stepped concrete pouring.
4. The large-span cantilever multi-layer steel frame structure according to claim 1, characterized in that, The tie rod landing section is inclinedly positioned between two adjacent vertical steel members.
5. The large-span cantilever multi-layer steel frame structure according to claim 1, characterized in that, The diagonal support of the ground section of the tie rod and the diagonal support of the cantilever section of the tie rod are set at a 45° angle to each other.