Fabricated profile steel laminated core column / shear wall
By using prefabricated steel composite core column/shear wall structure, the problems of large space occupation and difficult connection nodes of traditional cast-in-place columns are solved, realizing high-strength and excellent seismic performance of composite components, improving construction quality and efficiency, and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional cast-in-place columns or walls occupy a large space, affecting the building's aesthetics and functional zoning. The construction quality of high-strength concrete is difficult to guarantee, and the connection between precast and cast-in-place components is difficult to implement, affecting the stability and safety of the building structure.
The prefabricated steel composite core column/shear wall structure is adopted. A high-strength concrete core layer is precast inside the steel components, and a cast-in-place concrete wrapping layer is used on the outside. The high-strength concrete and steel components are combined by stacking the steel components, which ensures the connection quality and seismic performance.
This resulted in high-strength, high-seismic-performance composite components, reduced component cross-sectional dimensions, avoided construction quality issues, improved connection reliability and construction efficiency, and lowered construction costs.
Smart Images
Figure CN224063795U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building engineering, and in particular to a prefabricated steel composite core column / shear wall. Background Technology
[0002] With the rapid development of the social economy and the continuous improvement of people's living standards, the construction field faces increasingly more challenges and opportunities. On the one hand, people's demands for architectural space are becoming increasingly diversified, requiring buildings not only to meet basic functional needs but also to possess good aesthetics, comfort, and environmental friendliness. On the other hand, building technology is constantly innovating and progressing, making it possible to meet these demands. For example, building structures with large spans, high loads, and high spatial requirements can provide people with more spacious and flexible spaces, meeting the needs of large-scale events, exhibitions, transportation, sports, and many other aspects. However, in practical applications, the cross-sectional dimensions of traditional cast-in-place concrete columns or cast-in-place columns using composite structures, designed according to existing specifications, are constantly increasing, but the following problems have also been found in practical applications:
[0003] Question 1: The impact of large-scale cast-in-place columns or walls on the functional and aesthetic requirements of building space cannot be ignored. On the one hand, large-scale cast-in-place columns occupy a significant amount of building space, leading to reduced space utilization and affecting the internal layout and functional zoning. For example, in some commercial buildings, excessively large columns may obstruct customer flow and sightlines, impacting business activities and the customer shopping experience. On the other hand, large-scale cast-in-place walls or columns may make the building appear bulky and oppressive, lacking aesthetic appeal and artistry. Modern architecture increasingly emphasizes innovative and personalized exterior design, but traditional large-scale cast-in-place structures struggle to meet these demands, limiting the diversity and flexibility of architectural design.
[0004] Question 2: Due to limitations in on-site construction and curing conditions, high-strength concrete components often suffer from quality problems during cast-in-place construction, such as cracking, thus restricting their application. High-strength concrete possesses high compressive strength and durability, meeting the requirements of large-span, high-load buildings. However, in actual construction, limitations in on-site construction and curing conditions easily lead to quality problems such as cracking, honeycombing, and pitting in high-strength concrete components. For example, inaccurate concrete mix proportions, uneven mixing, improper pouring methods, inadequate vibration, and insufficient curing can all result in insufficient concrete strength and reduced durability. These problems not only affect the structural safety and service life of buildings but also increase subsequent repair and maintenance costs.
[0005] Question 3: The connection between traditional precast and cast-in-place components often presents difficulties in implementation, making it impossible to guarantee the connection quality and load-bearing performance. While precast components offer advantages such as fast construction speed and easy quality control, the design and construction of their connection points with cast-in-place components are more complex. In practical applications, difficulties frequently arise in the implementation of connection points, such as inaccurate installation positions of connectors, unreasonable connection methods, and insufficient connection strength. These problems lead to compromised connection quality between precast and cast-in-place components, affecting the stability and safety of the entire building structure. Summary of the Invention
[0006] To address the shortcomings of existing technologies, this invention provides a prefabricated steel composite core column / shear wall. By using prefabricated steel components and an internal high-strength concrete core layer, while the outer cladding layer is cast-in-place, the composite steel components achieve effective bonding and quality assurance between the prefabricated high-strength concrete and the steel components. This also ensures effective connection between the composite steel components and the cast-in-place cladding layer, guaranteeing the seismic performance and ductility of the composite steel components and avoiding the quality risks associated with the connection points between traditional prefabricated and cast-in-place components. The prefabricated steel composite core column / shear wall described in this invention exhibits good load-bearing capacity, high strength, high stiffness, good ductility, excellent seismic performance, high feasibility of irregular cross-sections, and reliable construction quality.
[0007] This utility model achieves the above-mentioned technical objectives through the following technical means.
[0008] A prefabricated steel composite core column / shear wall includes a core layer and an outer cladding layer. The core layer is located inside the steel component, and the steel component is covered with a concrete cladding layer. The strength of the core layer is greater than that of the cladding layer. Through the composite of the steel components, both the effective combination and quality assurance of the precast high-strength concrete and the steel component are achieved, and the effective connection between the composite steel component and the cast-in-place cladding layer is ensured.
[0009] Furthermore, the core layer is a precast concrete structure within a steel component.
[0010] Furthermore, the concrete strength of the core layer is not less than C60.
[0011] Furthermore, the steel component is a spliced component or a closed-section steel profile.
[0012] Furthermore, the steel component is provided with reinforcing members extending to the cladding layer, which enables an effective connection between the cast-in-place concrete and the precast component, and also ensures mechanical properties.
[0013] Furthermore, some reinforcing components extend to the outer surface of the wrapping layer or penetrate the wrapping layer to ensure the stability of the wrapping layer during the casting process.
[0014] Furthermore, the reinforcing member includes reinforcing ribs and stirrups, with a plurality of reinforcing ribs distributed on the surface of the steel member and the stirrups wrapped around the reinforcing ribs.
[0015] Furthermore, the reinforcing rib is a stud or a connecting rib with a hook.
[0016] Furthermore, a grouting cavity is provided at one end of the core layer, and one side of the grouting cavity extends to the end face of the core layer. The grouting cavity is filled with concrete by grouting to ensure a firm connection between the core layers.
[0017] Furthermore, the encapsulation layer is provided with grouting holes and overflow holes, which extend into the grouting cavity.
[0018] The beneficial effects of this utility model are as follows:
[0019] 1. The prefabricated steel composite core column / shear wall of this utility model adopts a prefabricated form for the steel components and the internal high-strength concrete core layer, and adopts a cast-in-place form for the outer cladding layer of the steel components. Through the composite of steel components, it not only achieves effective combination and quality assurance of prefabricated high-strength concrete and steel components, but also ensures effective connection between the composite steel components and the cast-in-place cladding layer, ensuring the seismic performance and ductility of the composite steel components, and avoiding the quality risks of the connection nodes between traditional prefabricated components and cast-in-place components.
[0020] 2. The prefabricated steel composite core column / shear wall described in this utility model has good stress performance, high strength, high stiffness, good ductility, excellent seismic performance, high degree of realization of irregular cross-sections, and reliable construction quality.
[0021] 3. The prefabricated steel composite core column / shear column of this utility model forms a composite component with higher strength, better cross section and better seismic performance by combining several materials such as ordinary concrete, steel components and high-strength concrete, which helps to reduce construction costs.
[0022] 4. The prefabricated steel composite core column / shear wall described in this utility model has a core layer of high-strength concrete located inside the steel component, which can effectively reduce the cross-sectional dimensions of traditional column or shear wall components and better achieve architectural effects and functional requirements.
[0023] 5. The prefabricated steel composite core column / shear wall described in this utility model can effectively constrain the high-strength concrete inside the steel component. At the same time, by setting reinforcing components, it can effectively improve the bonding quality between the components of the composite core column / shear wall, and achieve a better synergistic stress-bearing effect.
[0024] 6. The prefabricated steel composite core column / shear wall described in this utility model can significantly reduce construction difficulty and save construction time by processing the core layer in the prefabrication plant. In this way, the core layer of the concrete structure has better curing conditions, avoids quality problems such as cracks in high-strength concrete, and effectively improves the stress performance of the component. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are some embodiments of this utility model. For those skilled in the art, it is obvious that other drawings can be obtained from these drawings without creative effort.
[0026] Figure 1 This is a cross-sectional view of the assembled steel composite core column described in this utility model.
[0027] Figure 2 This is a front view of the assembled steel composite core column described in this utility model.
[0028] Figure 3 This is a schematic diagram of the grouting cavity described in this utility model.
[0029] Figure 4 This is a cross-sectional view of the prefabricated steel composite shear wall described in this utility model.
[0030] Figure 5 This is a schematic diagram of the prefabricated steel composite shear wall described in this utility model.
[0031] In the picture:
[0032] 1-Core layer; 1-1-Grouting cavity; 2-Steel section; 2-1-Reinforcing rib; 3-Wrapping layer; 4-Grouting hole; 5-Grouting overflow hole. Detailed Implementation
[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0034] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and 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 of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0036] Example 1
[0037] like Figure 1 and Figure 2 As shown, the prefabricated steel composite core column of this invention includes a core layer 1 and a wrapping layer 2. The core layer 1 is located inside the steel component, and the steel component is surrounded by a concrete wrapping layer 2. The strength of the core layer 1 is greater than the strength of the wrapping layer 2. This composite core column of the present invention has a high-strength core layer 1 inside the steel component, while the steel component has a cast-in-place wrapping layer 2 on the outside. This structure achieves both effective bonding and quality assurance between the prefabricated high-strength concrete and the steel component, and ensures effective connection between the steel component and the cast-in-place wrapping layer. This structure can significantly change the outer diameter of large-sized cast-in-place columns without occupying a large amount of building space, thus making more rational use of space.
[0038] The core layer 1 is a precast concrete structure within the steel component. This ensures the quality of the core layer 1. Since the high-strength concrete in the core layer 1 is precast in the factory and does not need to be poured on-site, the quality of the core layer 1 is guaranteed, and the high-strength concrete will not exhibit quality problems such as cracking, honeycombing, or pitting. In Example 1, the concrete strength of the core layer 1 is not lower than C60. In another embodiment, the core layer 1 is a concrete structure containing reinforcing bars, or a concrete structure with pre-embedded reinforcing bars, wherein the reinforcing bars can be steel bars, structural steel, or other steel components.
[0039] like Figure 2 As shown, the steel component in Example 1 is a closed-section steel profile, generally a rectangular tube, square tube, or round tube. The steel material can be Q235B or higher strength grade. The steel component is provided with reinforcing members extending to the cladding layer 2. The reinforcing rib 2-1 is a stud, which can be an ordinary stud or a tie bar with a hook, thus strengthening the effective connection with the cast-in-place cladding layer 2. The reinforcing rib 2-1 can be locally lengthened according to design requirements or a bar head with a hook can be used, thus serving as a tie bar to hold the cast-in-place reinforcing bars on the outside of the steel profile and tie them with stirrups.
[0040] like Figure 3 As shown, to ensure the quality of the mating core layer 1, a grouting cavity 1-1 is provided at one end of the core layer 1, extending to the end face of the core layer 1 on one side. The grouting cavity 1-1 is filled with concrete through grouting. The wrapping layer 2 is provided with grouting holes 4 and overflow holes 5, which extend into the grouting cavity 1-1, thus ensuring the compactness of the concrete between the mating core layers 1.
[0041] Example 2
[0042] like Figure 4 and Figure 5 As shown, the prefabricated steel composite shear wall of this utility model includes a core layer 1 and an outer cladding layer 2. The core layer 1 is located inside the steel component, and the steel component is surrounded by a concrete outer cladding layer 2. The strength of the core layer 1 is greater than the strength of the outer cladding layer 2. The steel component in the composite shear wall is a closed-section splice, which in this embodiment is a welded rectangular assembly. The composite shear wall of this utility model has a high-strength core layer 1 inside the steel component, while the steel component has a cast-in-place outer cladding layer 2. This structure achieves both effective bonding and quality assurance between the precast high-strength concrete and the steel component, and ensures effective connection between the steel component and the cast-in-place outer cladding layer. This structure can significantly reduce the thickness of the shear wall, does not occupy a large building space, and makes more rational use of space.
[0043] The core layer 1 is a precast concrete structure within the steel component. This ensures the quality of the core layer 1. Since the high-strength concrete in the core layer 1 is precast in the factory and does not need to be poured on the construction site, the quality of the core layer 1 is guaranteed, and the high-strength concrete will not have quality problems such as cracking, honeycombing, or pitting. The concrete strength of the core layer 1 in Example 1 is not lower than C60.
[0044] The steel component is provided with reinforcing members extending to the cladding layer 2. The reinforcing members include reinforcing ribs 2-1 and stirrups. Several reinforcing ribs 2-1 are distributed on the surface of the steel component, and the stirrups are wrapped around the reinforcing ribs 2-1. Some reinforcing ribs 2-1 extend to the outer surface of the cladding layer 2 or pass through the cladding layer to connect with the outer base layer, thus ensuring the stability and strength of the cast-in-place cladding layer 2. The base layer can refer to the structure connected to the cast-in-place cladding layer, the ground, or other structures. The reinforcing ribs 2-1 are studs or hooked connecting bars, thus strengthening the effective connection with the cast-in-place cladding layer 2; the reinforcing ribs 2-1 can be locally lengthened according to design requirements or use hooked steel bar ends, thus serving as tie bars to hold the cast-in-place steel bars on the outer side of the steel section and bind them with stirrups. In another embodiment, some reinforcing ribs 2-1 extend to the outer surface of the cladding layer 2 or pass through the cladding layer to connect with the outer foundation, thus ensuring the stability and strength of the cast-in-place cladding layer 2.
[0045] The production method of the prefabricated steel composite core column / shear wall described in this utility model includes the following steps:
[0046] Section steel 2 is processed and shaped in the factory, and studs are welded to its surface.
[0047] Using steel section 2 as a mold, high-strength concrete is poured inside and cured to form the core layer 1 of the precast concrete structure; a grouting cavity 1-1 is reserved at the joint of the upper and lower core layers 1, and grouting holes 4 and overflow holes 5 are reserved.
[0048] Connect the studs on the steel section 2 to the reinforcing bars of the outer beam of the wrapping layer 2, so that it can be effectively connected to the core layer 1.
[0049] After the precast core layer 1 is installed in place, the steel sections of the upper and lower core layers 1 are welded with equal strength, and grouting measures are reserved. Then, the cast-in-place concrete is poured, that is, the cast-in-place concrete on the outside of the steel component forms the wrapping layer 2.
[0050] After the cast-in-place concrete reaches the set strength, high-strength grout C80 is used to fill and compact the grouting cavity 1-1.
[0051] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.
[0052] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. All equivalent embodiments or modifications made without departing from the spirit of the present utility model should be included within the scope of protection of the present utility model.
Claims
1. A fabricated steel profiled core column / shear wall, characterized by, The application relates to a steel-concrete composite structure, which comprises a core layer (1) and a wrapping layer (2), the core layer (1) is arranged in a steel member, and the wrapping layer (2) of a concrete structure is arranged outside the steel member; the strength of the core layer (1) is greater than that of the wrapping layer (2).
2. The fabricated steel shape superposed core column / shear wall according to claim 1, wherein, The core layer (1) is a concrete structure prearranged in the steel member.
3. The fabricated steel shape superposed core column / shear wall according to claim 2, characterized by, The concrete strength of the core layer (1) is not less than C60.
4. The fabricated steel shape superposed core column / shear wall according to claim 1, wherein, The steel member is a closed-section spliced piece or a profile steel.
5. The fabricated steel shape sandwich core column / shear wall according to claim 1, wherein, The steel member is provided with a reinforcing member extending to the wrapping layer (2).
6. The fabricated steel shape sandwich core column / shear wall according to claim 1, wherein, Part of the reinforcing member extends to the outer surface of the wrapping layer (2) or penetrates through the wrapping layer (2).
7. The fabricated steel shape sandwich core column / shear wall according to claim 5, wherein, The reinforcing member comprises reinforcing bars (2-1) distributed on the surface of the steel member and stirrups wound on the reinforcing bars (2-1).
8. The fabricated steel shape sandwich core column / shear wall according to claim 7, wherein, The reinforcing bar (2-1) is a stud or a hooked connecting bar.
9. The fabricated steel shape sandwich core column / shear wall according to claim 1, wherein, One end of the core layer (1) is provided with a grouting cavity (1-1), one side of the grouting cavity (1-1) extends to the end surface of the core layer (1), and the grouting cavity (1-1) is filled with concrete through grouting.
10. The fabricated steel shape sandwich core column / shear wall according to claim 9, wherein, The wrapping layer (2) is respectively provided with a grouting hole (4) and a grout overflow hole (5), and the grouting hole (4) and the grout overflow hole (5) respectively extend into the grouting cavity (1-1).