Separating type steel reinforced concrete combined giant column

Abstract

The utility model provides a separated type steel reinforced concrete combined giant column which comprises a concrete giant column, a steel reinforcement framework and a plurality of pieces of profile steel. The steel reinforcement framework and the profile steel are embedded in the concrete huge column; a plurality of containing cavities which are not communicated with one another are formed in the steel reinforcement framework, the sizes of the containing cavities correspond to the sizes of the profile steel in a one-to-one mode, and the profile steel is arranged in the containing cavities. The multiple pieces of profile steel are not connected with one another, and a plurality of studs are arranged on the side walls of the profile steel and extend outwards from the side walls of the profile steel. According to the configuration, the multiple pieces of profile steel are separately arranged, the steel reinforcement framework can penetrate through the whole section of the combined giant column to be arranged, and the independent profile steel and the surrounding concrete structure can form a whole. And the weight per unit length of the single section steel is reduced, so that the single section steel with longer length is convenient to hoist, the welding quantity of the section steel in the same column section is reduced, and the adverse effects of residual stress and weld defects are reduced.

Description

Technical Field

[0001] This utility model relates to the field of building construction, and in particular to a separable steel-concrete composite mega-column. Background Technology

[0002] As a crucial component of the lateral force resisting system of super high-rise structures, the external frame plays a key role in resisting wind and seismic loads. Mega-frame structures are commonly used in super high-rise structures exceeding 300m in height, characterized by large frame column cross-sections (side length not less than 1m, referred to as mega-columns), a small number of columns, and high structural efficiency. Steel-concrete composite structures, due to their excellent load-bearing capacity and ductility, are typically the primary cross-sectional form for mega-columns.

[0003] In solid-web steel-concrete composite mega-columns, the solid-web steel sections are welded from pre-cut steel plates, and their dimensions are slightly smaller than those of the concrete mega-column. However, the following problems lead to poor structural performance and construction quality of the components.

[0004] 1) Increased welding workload. Due to limitations in crane lifting capacity, steel sections of the same column segment need to be lifted and welded on-site in multiple sections. The quality of the welds is difficult to control effectively, affecting the fatigue and ductility properties of the steel.

[0005] 2) Stirrups can only provide localized restraint. Due to the obstruction of solid-web steel sections, stirrups cannot pass through the steel plate, so the restraint effect of the stirrups can only exist locally, and the steel section and concrete cannot form an effective whole.

[0006] 3) Long construction period and high labor costs. The large amount of welding work on site extends the construction period and increases labor costs.

[0007] Therefore, how to meet the stress requirements of column structures while taking into account construction conditions has become a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0008] The purpose of this utility model is to provide a separable steel-concrete composite mega-column to solve the problems of inconvenient construction and large amount of welding required for existing composite mega-columns.

[0009] To achieve the above objectives, this utility model provides a separable steel-concrete composite mega-column, comprising: a concrete mega-column, a steel reinforcement frame, and multiple steel sections;

[0010] Both the reinforcing steel frame and the structural steel are embedded within the concrete mega-column;

[0011] The steel reinforcement cage has multiple non-interconnected receiving cavities, the size of which corresponds one-to-one with the size of the steel section, and the steel section is placed in the receiving cavity;

[0012] The multiple steel sections are not connected to each other, and multiple studs are arranged on the side wall of the steel section, with the studs extending outward from the side wall of the steel section.

[0013] Optionally, the steel reinforcement cage includes stirrups and longitudinal bars;

[0014] The longitudinal reinforcement is arranged perpendicular to the stirrup and parallel to the axial direction of the steel section;

[0015] The stirrups are arranged around the steel section and are broken at the outer edge of the steel section to form the accommodating cavity.

[0016] Optionally, the sidewall of the steel section is in contact with or has a gap with the stirrup; the stud is in contact with or has a gap with the stirrup.

[0017] Optionally, the stud is welded to the side wall of the steel profile.

[0018] Optionally, the cross-sectional shapes of the multiple steel sections may be the same or different.

[0019] Compared with existing composite column structures, the separated steel-concrete composite mega-column provided in this application has the following advantages:

[0020] The separated steel-concrete composite mega-column provided in this application separates multiple steel sections, which are not connected to each other. The reinforcing steel frame can be arranged throughout the entire cross-section of the composite column, allowing the individual steel sections to form an integral whole with the surrounding concrete structure and cooperate better. Furthermore, due to the reduced weight per unit length of individual steel sections, it is easier to hoist longer individual steel sections, significantly reducing the amount of welding required within the same column segment and minimizing the adverse effects of residual stress and weld defects. Simultaneously, the separately arranged steel sections can be flexibly arranged within the column cross-section to meet the needs of column sections with different shapes. In addition, with the reduction in welding, labor costs are lowered, and the construction period is shortened. Attached Figure Description

[0021] Figure 1 A cross-sectional schematic diagram of the first type of split steel-concrete composite mega-column provided for an embodiment of this utility model;

[0022] Figure 2 A longitudinal sectional view of the first type of split steel-concrete composite mega-column provided for an embodiment of this utility model;

[0023] Figure 3 A cross-sectional schematic diagram of a second type of split steel-concrete composite mega-column provided for an embodiment of this utility model;

[0024] Figure 4A longitudinal sectional view of the second type of split steel-concrete composite mega-column provided for an embodiment of this utility model;

[0025] Figure 5 A schematic diagram of a third type of split steel-concrete composite mega-column provided for an embodiment of this utility model;

[0026] Figure 6 A schematic diagram of the fourth type of split steel-concrete composite mega-column provided for embodiments of this utility model;

[0027] Figure 7 A flowchart illustrating the construction method of the separable steel-concrete composite column provided in this embodiment of the utility model;

[0028] Figure 8 A schematic diagram of step S1 provided in an embodiment of this utility model;

[0029] Figure 9 A schematic diagram of step S2 provided in an embodiment of this utility model;

[0030] Figure 10 A schematic diagram of step S3 provided in an embodiment of this utility model;

[0031] Figure 11 This is a schematic diagram of step S4 provided in an embodiment of the present utility model.

[0032] The explanations of the reference numerals in the accompanying drawings are as follows:

[0033] 1-Mega concrete column;

[0034] 2-Reinforcing steel cage; 20-Stirrups; 21-Longitudinal reinforcement; 22-Accommodating cavity; 200-First reinforcing bar; 201-Second reinforcing bar; 202-Diagonal tie bar;

[0035] 3-Steel section; 4-Stud; 5-Temporary formwork; 6-Grouting cavity. Detailed Implementation

[0036] To make the objectives, advantages, and features of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and are not drawn to scale, and are only used to facilitate and clarify the explanation of the objectives of the embodiments of this utility model. Furthermore, the structures shown in the drawings are often part of the actual structure. In particular, different drawings may emphasize different aspects and sometimes use different scales.

[0037] As used herein, the singular forms “a,” “an,” and “the” include plural objects; the term “or” is generally used to mean “and / or”; the term “a number” is generally used to mean “at least one”; and the term “at least two” is generally used to mean “two or more”. Furthermore, the terms “first,” “second,” and “third” 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 as “first,” “second,” or “third” may explicitly or implicitly include one or at least two of that feature. “One end” and “the other end,” as well as “proximal end” and “distal end,” generally refer to two corresponding parts, including not only endpoints. The terms “installed,” “connected,” and “joined” should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Furthermore, as used in this specification, the phrase "one element is disposed on another element" generally only indicates that there is a connection, coupling, cooperation, or transmission relationship between the two elements, and the connection, coupling, cooperation, or transmission between the two elements can be direct or indirect through an intermediate element. It should not be construed as indicating or implying a spatial positional relationship between the two elements, i.e., one element can be located arbitrarily inside, outside, above, below, or to the side of another element, unless otherwise explicitly stated. The terms "above," "below," "top," and "bottom" generally refer to relative positional relationships arranged according to the direction of gravity; the terms "vertical" or "vertical direction" generally refer to the direction of gravity, which is generally perpendicular to the ground; "horizontal" or "horizontal plane direction" generally refers to a direction parallel to the ground. Those skilled in the art can understand the specific meaning of the above terms in this specification according to the specific circumstances.

[0038] The purpose of this utility model is to provide a separable steel-concrete composite mega-column to solve the problems of inconvenient construction and large amount of welding required for existing composite mega-columns.

[0039] Please refer to Figures 1 to 4This utility model provides a separable steel-concrete composite mega-column, comprising: a concrete mega-column 1, a reinforcing steel frame 2, and multiple steel profiles 3; the reinforcing steel frame 2 and the steel profiles 3 are both embedded within the concrete mega-column 1; the reinforcing steel frame 2 has multiple non-communicating receiving cavities 22, the dimensions of which correspond one-to-one with the dimensions of the steel profiles 3, and the steel profiles 3 are disposed within the receiving cavities 22; the multiple steel profiles 3 are not interconnected, and multiple studs 4 are arranged on the sidewalls of the steel profiles 3, with the studs 4 extending outward from the sidewalls of the steel profiles 3. Those skilled in the art will understand that the shape of the concrete mega-column 1 is influenced by the shape of the temporary formwork 5, and in this embodiment, the reinforcing steel frame 2 runs through the entire composite column; therefore, in this embodiment, the shape of the concrete structure 1 is consistent with the shape of the reinforcing steel frame 2. Figure 1 and Figure 3 In the illustrated example, the concrete mega-column 1 has a rectangular cross-section, and correspondingly, the outer contour of the reinforcing steel frame 2 is also rectangular. In other embodiments, the cross-sectional shape of the concrete structure 1, i.e., the composite column, can also be circular (e.g., ...). Figure 5 As shown), L-shaped, T-shaped, diamond-shaped or other irregular shapes, the corresponding steel reinforcement cage 2 should also be tied into a matching shape.

[0040] exist Figure 1 In the illustrated example, the cross-sectional shape of multiple steel sections 3 is I-shaped; Figure 3 In the illustrated example, the cross-sectional shape of multiple steel sections 3 is channel-shaped. In other embodiments, the cross-section of the steel section 3 can also be an open cross-section such as H-shaped, T-shaped, or king-shaped, or a closed cross-section such as rectangular or circular. The cross-sectional shapes of multiple steel sections 3 can be the same or different. For example, a composite column is provided with five separate steel sections 3, two of which are I-shaped steel sections 3 and three are channel-shaped steel sections 3. At the same time, the number of steel sections 3 can also be flexibly configured according to the actual situation, and this embodiment does not limit this.

[0041] This configuration, by separating and decoupling multiple steel sections 3, allows the reinforcing steel cage 2 to be arranged throughout the entire composite column section. This enables the individual steel sections 3 to form a cohesive whole with the surrounding concrete structure 1, facilitating better collaboration. Furthermore, the reduced weight per unit length of a single steel section 3 facilitates the hoisting of longer individual sections, significantly reducing the amount of welding required within the same column segment and minimizing the adverse effects of residual stress and weld defects. Simultaneously, the separately arranged steel sections 3 can be flexibly deployed within the column section to meet the needs of columns with different shapes. In addition, the reduced welding volume lowers labor costs and shortens the construction period.

[0042] As an optional embodiment, the reinforcing cage 2 includes stirrups 20 and longitudinal bars 21. The longitudinal bars 21 are arranged perpendicular to the stirrups 20 and parallel to the axial direction of the steel section 3. The stirrups 20 are arranged around the steel section 3 and are interrupted at the outer edge of the steel section 3 to form a receiving cavity 22. It should be noted that the reinforcing cage 2 includes horizontally arranged stirrups 20 and vertically arranged longitudinal bars 21. The horizontally arranged stirrups 20 are interrupted when they encounter the steel section 3 in their extension direction to form a receiving cavity 22 that matches the steel section 3 for placement. The multiple receiving cavities 22 are not interconnected, so that the multiple steel sections 3 are separated from each other, which improves the flexibility of the composite column section arrangement and can meet the requirements of different section shapes. The vertically arranged longitudinal bars 21 are arranged parallel to the axial direction of the steel section 3 and overlap with the horizontally arranged stirrups 20 to jointly form the reinforcing cage 2, which is anchored in the concrete structure 1 and works together with the steel section 3 and the concrete structure 1 to provide the corresponding load-bearing capacity.

[0043] Please continue to refer to this. Figures 1 to 6 The sidewalls of the steel section 3 are in contact with or have gaps with the stirrups 20; the studs 4 are in contact with or have gaps with the stirrups 20. It should be noted that in this embodiment, the steel section 3 and the studs 4 are not connected to the reinforcing cage 2; they are only in contact with each other or have gaps. With this configuration, the multiple steel sections 3 are not connected to each other, while the horizontally arranged stirrups 20 can penetrate the entire cross-section of the composite column, only breaking off when they encounter the steel section 3 in their extension direction. This allows the independent steel sections 3 to form an integral whole with the surrounding concrete structure 1, working together better. The reinforcing cage 2 further increases the tensile strength of the composite column, enabling it to meet the corresponding stress requirements.

[0044] Optionally, the stirrups 20 include a first reinforcing bar 200 and a second reinforcing bar 201, which are staggered to form a reinforcing mesh structure. Please refer to [reference needed]. Figure 1 and Figure 3 The stirrups 20 include first reinforcing bars 200 and second reinforcing bars 201 extending in different directions. The first reinforcing bars 200 and second reinforcing bars 201 are interlaced and are broken when they encounter the steel section 3, ultimately forming a steel mesh with multiple accommodating cavities 22. Figure 1 and Figure 3In this design, both the first reinforcing bar 200 and the second reinforcing bar 201 are horizontally arranged stirrups 20, and their extension directions are perpendicular to each other, so as to form a reinforcing bar skeleton 2 with a rectangular outer contour, and ultimately form a concrete mega-column 1 with a rectangular cross-section. In other embodiments, the reinforcing bar skeleton 2 and the concrete structure 1 can also have other cross-sectional shapes. Therefore, the first reinforcing bar 200 and the second reinforcing bar 201 can also be arranged at other angles. Those skilled in the art can reasonably configure the angle and extension direction of the first reinforcing bar 200 and the second reinforcing bar 201 according to the actual situation and the difficulty of binding.

[0045] Furthermore, the longitudinal reinforcement 21 is positioned at the lap joint of the first reinforcement 200 and the second reinforcement 201. It should be noted that the longitudinal reinforcement 21 laps at the lap joint of the first reinforcement 200 and the second reinforcement 201 to form a complete reinforcement cage 2. The specific configuration of the longitudinal reinforcement 21 can be flexibly set by those skilled in the art based on actual conditions. Figure 1 and Figure 3 The configuration of longitudinal reinforcement 21 is for illustrative purposes only and should not be construed as a limitation on the configuration of longitudinal reinforcement 21.

[0046] Furthermore, the studs 4 are welded to the sidewall of the steel section 3. It should be noted that, in this embodiment, multiple studs 4 are welded to the sidewall of the steel section 3. The studs 4 are evenly arranged on the steel section 3 in both horizontal and vertical directions and extend outward from the sidewall of the steel section 3. This increases the anchoring effect between the steel section 3 and the concrete mega-column 1, so that the steel section 3 can form an integral whole with the concrete structure 1 and jointly bear the external load.

[0047] As an optional embodiment, in Figure 6 In the example shown, the steel reinforcement cage 2 is rectangular, and the stirrups 20 may also include diagonal bracing bars 202, which are arranged horizontally and connected to longitudinal bars 21 located on different sides at the corners, thereby improving the stability of the steel reinforcement cage 2. After concrete is poured into the grouting cavity 6, the anchoring effect between the steel reinforcement cage 2 and the concrete mega-column 1 is further increased so that they can share the load.

[0048] In another embodiment, please refer to Figures 7 to 11 This utility model also provides a construction method for a separable steel-concrete composite column, applicable to the separable steel-concrete composite column as described above, comprising:

[0049] Step S1: Hoist the multiple steel sections 3 into place respectively;

[0050] Step S2: Tie the reinforcing steel frame 2 around the perimeter of the multiple steel sections 3;

[0051] Step S3: Set up temporary formwork 5 around the steel reinforcement cage 2 to form the grouting cavity 6;

[0052] Step S4: Pour concrete into the grouting cavity 6 to form the concrete structure 1, and remove the temporary formwork 5 after curing.

[0053] It should be noted that, in an optional embodiment, in step S1, as... Figure 8 As shown, a crane or lifting mechanism is used to lift the steel section 3. The steel section 3 and the studs 4 are prefabricated, and the studs 4 are welded to the side wall of the steel section 3 in the prefabrication plant. In step S2, a complete steel reinforcement cage 2 can be pre-tied and lifted using a crane or lifting mechanism so that the steel reinforcement cage 2 is fitted onto the outside of the steel section 3. Alternatively, it can be tied on-site based on the placement position of the steel section 3, ultimately forming a structure as shown. Figure 9 The structure shown; in step S3, a temporary formwork 5 is used to surround the outer perimeter of the reinforcing steel cage 2, forming a grouting cavity 6 for concrete pouring inside, wherein both the reinforcing steel cage 2 and the steel section 3 are located in the grouting cavity 6 (e.g., Figure 10 (As shown); In step S4, concrete is poured into the grouting cavity 6, and after curing for a certain period of time, the temporary formwork 5 is removed, ultimately forming as shown. Figure 11 The concrete structure shown is 1.

[0054] With this configuration, multiple steel sections 3 are set up separately and are not connected to each other. Since the weight per unit length of a single steel section 3 is reduced, it is easier to hoist longer single steel sections 3. This significantly reduces the amount of welding of steel sections 3 within the same column segment, reducing the adverse effects of residual stress and weld defects. As the amount of welding is reduced, labor costs are also reduced, and the construction period is shortened.

[0055] In summary, the separable steel-concrete composite mega-column provided in this embodiment of the present invention includes: a concrete mega-column, a reinforcing steel frame, and multiple steel sections; both the reinforcing steel frame and the steel sections are embedded within the concrete mega-column; the reinforcing steel frame has multiple non-interconnected receiving cavities, the dimensions of which correspond one-to-one with the dimensions of the steel sections, and the steel sections are placed within the receiving cavities; the multiple steel sections are not interconnected, and multiple studs are arranged on the sidewalls of the steel sections, with the studs extending outward from the sidewalls of the steel sections.

[0056] This configuration, by separating and decoupling multiple steel sections, allows the reinforcing steel cage to be arranged throughout the entire composite column section. This enables the individual steel sections to integrate seamlessly with the surrounding concrete structure, facilitating better collaboration. Furthermore, the reduced weight per unit length of individual steel sections facilitates the hoisting of longer sections, significantly decreasing the amount of welding required within the same column segment and mitigating the adverse effects of residual stress and weld defects. Simultaneously, the separately arranged steel sections can be flexibly deployed within the column section to meet the needs of columns with different shapes. In addition, the reduced welding volume lowers labor costs and shortens the construction period.

[0057] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A separable steel-concrete composite mega-column, comprising: Concrete mega-columns, steel reinforcement cages, and multiple steel sections; characterized in that, Both the reinforcing steel frame and the structural steel are embedded within the concrete mega-column; The steel reinforcement cage has multiple non-interconnected receiving cavities, the size of which corresponds one-to-one with the size of the steel section, and the steel section is placed in the receiving cavity; The multiple steel sections are not connected to each other, and multiple studs are arranged on the side wall of the steel section, with the studs extending outward from the side wall of the steel section.

2. The separable steel-concrete composite mega-column as described in claim 1, characterized in that, The steel reinforcement cage includes stirrups and longitudinal bars; The longitudinal reinforcement is arranged perpendicular to the stirrup and parallel to the axial direction of the steel section; The stirrups are arranged around the steel section and are broken at the outer edge of the steel section to form the accommodating cavity.

3. The separable steel-concrete composite mega-column as described in claim 2, characterized in that, The sidewall of the steel section is in contact with or has a gap with the stirrup; the stud is in contact with or has a gap with the stirrup.

4. The separable steel-concrete composite mega-column as described in claim 1, characterized in that, The studs are welded to the side wall of the steel profile.

5. The separable steel-concrete composite mega-column as described in claim 1, characterized in that, The cross-sectional shapes of the various steel sections may be the same or different.

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