Separating type steel reinforced concrete combined giant column

Abstract

The invention provides a separated type steel reinforced concrete combined giant column. The separated type steel reinforced concrete combined giant column comprises a concrete giant column, a steel reinforcement framework and multiple 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] The invention relates to the field of building construction, in particular to a separated steel-concrete composite giant column. Background Art

[0002] As one of the important components of the lateral force resistance system of super high-rise structures, the external frame plays a key role in the super high-rise structure's resistance to wind loads and earthquake loads. Among them, the giant frame structure is often used in super high-rise structures with a height of more than 300m. Its characteristics are that the frame column has a large cross-sectional size (the side length of the cross section is not less than 1m, called a giant column), a small number, and high structural efficiency. Steel concrete is usually the main cross-sectional form of giant columns due to its good bearing capacity and ductility.

[0003] In the solid-web steel-concrete composite giant column, the solid-web steel is welded from cut steel plates, and the size of the solid-web steel is slightly smaller than that of the concrete giant column. However, the following problems lead to poor mechanical performance and construction quality of the components.

[0004] 1) Increased welding workload. Limited by the lifting capacity of the crane, the steel sections of the same column section need to be divided into multiple sections for hoisting and on-site welding. The quality of the welds is difficult to effectively control, affecting the fatigue and ductility of the steel sections.

[0005] 2) Stirrups can only form constraints locally. Due to the obstruction of the solid steel section, the stirrups cannot pass through the steel plate, so the restraining 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 cost. Due to a large amount of welding work on site, the construction period is prolonged and the labor cost increases.

[0007] Based on this, how to meet the force requirements of the column structure while taking into account the construction conditions has become a technical problem that technical personnel in this field need to solve. Summary of the invention

[0008] The object of the present invention is to provide a separated steel-concrete composite giant column to solve the problems of inconvenient construction and large welding amount of existing composite giant columns.

[0009] In order to achieve the above-mentioned object, the present invention provides a separated steel-concrete composite megacolumn, comprising: a concrete megacolumn, a steel skeleton and a plurality of steel sections;

[0010] The steel reinforcement skeleton and the steel sections are embedded in the concrete giant column;

[0011] The steel bar skeleton is provided with a plurality of mutually unconnected accommodating cavities, the size of the accommodating cavities is set in one-to-one correspondence with the size of the steel sections, and the steel sections are arranged in the accommodating cavities;

[0012] The plurality of steel sections are not connected to each other, and a plurality of bolts are arranged on the side walls of the steel sections, and the bolts extend outward from the side walls of the steel sections.

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

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

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

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

[0017] Optionally, the bolts are welded to the side walls of the steel section.

[0018] Optionally, the cross-sectional shapes of the plurality of steel sections are the same or different.

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

[0020] The separated steel-concrete composite giant column provided by the present application sets multiple steel sections separately and not connected to each other. The steel skeleton can be arranged throughout the entire composite column section, so that the independent steel sections can form a whole with the surrounding concrete structure and work together better. And because the weight per unit length of a single steel section is reduced, it is convenient to hoist a single steel section with a longer length, so that the amount of steel section welding in the same column section is greatly reduced, reducing the adverse effects of residual stress and weld defects. At the same time, the separately arranged steel sections can be flexibly arranged in the column section to meet the needs of column sections of different shapes. In addition, with the reduction in the amount of welding, labor costs are reduced and the construction period is shortened. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic cross-sectional view of a first separated steel-concrete composite giant column provided in an embodiment of the present invention;

[0022] Figure 2 A schematic longitudinal section diagram of a first separated steel-concrete composite giant column provided in an embodiment of the present invention;

[0023] Figure 3 A schematic cross-sectional view of a second separated steel-concrete composite megacolumn provided by an embodiment of the present invention;

[0024] Figure 4 A schematic longitudinal section diagram of a second separated steel-concrete composite megacolumn provided by an embodiment of the present invention;

[0025] Figure 5 A schematic diagram of a third separated steel-concrete composite giant column provided in an embodiment of the present invention;

[0026] Figure 6 A schematic diagram of a fourth separated steel-concrete composite megacolumn provided in an embodiment of the present invention;

[0027] Figure 7 A flow chart of a construction method for a separated steel-concrete composite column provided by an embodiment of the present invention;

[0028] Figure 8 A schematic diagram of step S1 provided in an embodiment of the present invention;

[0029] Fig. 9 A schematic diagram of step S2 provided in an embodiment of the present invention;

[0030] Fig.10 A schematic diagram of step S3 provided in an embodiment of the present invention;

[0031] Fig.11 A schematic diagram of step S4 provided in an embodiment of the present invention.

[0032] The description of each reference numeral is as follows:

[0033] 1-Concrete giant column;

[0034] 2-steel skeleton; 20-hoop reinforcement; 21-longitudinal reinforcement; 22-accommodation cavity; 200-first reinforcement; 201-second reinforcement; 202-oblique tension reinforcement;

[0035] 3-steel; 4-bolt; 5-temporary formwork; 6-pouring cavity. DETAILED DESCRIPTION

[0036] In order to make the purpose, advantages and features of the present invention clearer, the present invention is further described in detail below in conjunction with 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 conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In addition, the structure shown in the drawings is often a part of the actual structure. In particular, the emphasis of each drawing is different, and sometimes different scales are used.

[0037] As used in this specification, the singular forms "a", "an" and "the" include plural objects, the term "or" is generally used to include the meaning of "and / or", the term "several" is generally used to include the meaning of "at least one", and the term "at least two" is generally used to include the meaning of "two or more". In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" and "third" may explicitly or implicitly include one or at least two of the features, "one end" and "the other end" and "the proximal end" and "the distal end" generally refer to two corresponding parts, which include not only the endpoints, and the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. In addition, as used in this specification, an element 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 may be direct or indirect through an intermediate element, and it cannot be understood as indicating or implying the spatial position relationship between the two elements, that is, one element may be in any orientation such as inside, outside, above, below or on one side of another element, unless the content clearly indicates otherwise. The terms "upper", "lower", "top" and "bottom" are generally relative position relationships arranged in the direction of gravity; the terms "vertical, vertical direction" generally refer to the direction of gravity, which is generally perpendicular to the ground, and "horizontal, horizontal plane direction" generally refers to the direction parallel to the ground; for ordinary technicians in this field, the specific meanings of the above terms in this specification can be understood according to specific circumstances.

[0038] The object of the present invention is to provide a separated steel-concrete composite giant column to solve the problems of inconvenient construction and large welding amount of existing composite giant columns.

[0039] Please refer to Figures 1 to 4The present invention provides a separated steel-concrete composite giant column, comprising: a concrete giant column 1, a steel skeleton 2 and a plurality of steel sections 3; the steel skeleton 2 and the steel sections 3 are both embedded in the concrete giant column 1; a plurality of unconnected accommodating cavities 22 are provided in the steel skeleton 2, the size of the accommodating cavities 22 is set in one-to-one correspondence with the size of the steel sections 3, and the steel sections 3 are arranged in the accommodating cavities 22; the plurality of steel sections 3 are not connected to each other, and a plurality of bolts 4 are arranged on the side walls of the steel sections 3, and the bolts 4 extend outward from the side walls of the steel sections 3. It can be understood by those skilled in the art that the shape of the concrete giant column 1 is affected by the shape of the temporary formwork 5, and in this embodiment, the steel skeleton 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 steel skeleton 2. Figure 1 and Figure 3 In the illustrated example, the cross section of the concrete giant column 1 is rectangular, and accordingly, the outer contour of the steel skeleton 2 is also rectangular. In other embodiments, the cross section of the concrete structure 1, i.e., the composite column, may also be circular (e.g., Figure 5 As shown), L-shape, T-shape, diamond-shape or some other irregular shapes, and accordingly, the steel skeleton 2 should also be tied into a shape matching therewith.

[0040] exist Figure 1 In the illustrated example, the cross-sectional shapes of the plurality of steel sections 3 are all I-shaped; Figure 3 In the illustrated example, the cross-sectional shapes of the plurality of steel sections 3 are all groove-shaped; in other embodiments, the cross-sectional shapes of the steel sections 3 may also be open cross-sectional shapes such as H-shaped, T-shaped, and W-shaped, or may also be closed cross-sectional shapes such as rectangular and circular, and the cross-sectional shapes of the plurality of steel sections 3 may be consistent, or may have cross-sectional shapes of different shapes. For example, five separated steel sections 3 are arranged in the composite column, of which two are I-shaped steel sections 3 and three are groove-shaped steel sections 3. At the same time, the number of steel sections 3 may also be flexibly configured according to actual conditions, and this embodiment does not impose any restrictions on this.

[0041] With such configuration, by setting up multiple steel sections 3 separately and not connecting them to each other, the steel skeleton 2 can be arranged throughout the entire composite column section, so that the independent steel sections 3 can form a whole with the surrounding concrete structure 1 and work together better. And because the weight per unit length of a single steel section 3 is reduced, it is convenient to hoist a single steel section 3 with a longer length, so that the welding amount of the steel sections 3 in the same column section is greatly reduced, reducing the adverse effects of residual stress and weld defects. At the same time, the separately arranged steel sections 3 can be flexibly arranged in the column section to meet the needs of column sections of different shapes. In addition, as the amount of welding is reduced, labor costs are reduced and the construction period is shortened.

[0042] As an optional embodiment, the steel skeleton 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 disconnected at the outer edge of the steel section 3 to form a receiving cavity 22. It should be noted that the steel skeleton 2 includes stirrups 20 arranged horizontally and longitudinal bars 21 arranged vertically, wherein the stirrups 20 arranged horizontally are disconnected when they touch the steel section 3 in their extension direction to form a receiving cavity 22 matching the steel section 3 for placing the steel section 3, and multiple receiving cavities 22 are not connected to each other, so that multiple steel sections 3 are separated from each other, which improves the flexibility of the cross-sectional arrangement of the composite column and can meet the requirements of different cross-sectional shapes. The longitudinal bars 21 arranged vertically are arranged parallel to the axial direction of the steel section 3, and overlap with the stirrups 20 arranged horizontally to form the steel skeleton 2 together, and are anchored in the concrete structure 1, and work together with the steel section 3 and the concrete structure 1 to provide corresponding bearing capacity.

[0043] Please continue to refer to Figures 1 to 6 , the side wall of the steel section 3 is in contact with the stirrup 20 or has a gap; the bolt 4 is in contact with the stirrup 20 or has a gap. It should be noted that in the present embodiment, the steel section 3 and the bolt 4 are not connected to the steel skeleton 2, but are only in contact with each other or have a gap. With such a configuration, the multiple steel sections 3 are not connected to each other, and the stirrups 20 arranged horizontally can run through the entire cross-section of the composite column, and are only disconnected when encountering the steel section 3 in its extension direction, so that the independent steel section 3 can form a whole with the surrounding concrete structure 1 and work better together, and the setting of the steel skeleton 2 can further increase the tensile performance of the composite column, so that the composite column meets the corresponding force requirements.

[0044] Optionally, the stirrup 20 includes a first steel bar 200 and a second steel bar 201, and the first steel bar 200 and the second steel bar 201 are arranged alternately to form a steel mesh structure. Figure 1 and Figure 3 The stirrups 20 include a first steel bar 200 and a second steel bar 201 extending in different directions, the first steel bar 200 and the second steel bar 201 are interlaced with each other and are disconnected when encountering the steel section 3, and finally form a steel mesh with multiple accommodating cavities 22. Figure 1 and Figure 3In the embodiment, the first steel bar 200 and the second steel bar 201 are both horizontally arranged stirrups 20, and the extension directions of the two are perpendicular to each other, so as to form a steel bar skeleton 2 with a rectangular outer contour, and finally form a concrete giant column 1 with a rectangular cross-sectional shape. In other embodiments, the steel bar skeleton 2 and the concrete structure 1 can also have other cross-sectional shapes, so the first steel bar 200 and the second steel bar 201 can also be arranged at other angles. Those skilled in the art can reasonably configure the angles and extension directions of the first steel bar 200 and the second steel bar 201 according to the actual situation and the difficulty of binding.

[0045] Furthermore, the longitudinal reinforcement 21 is arranged at the overlap position of the first reinforcement 200 and the second reinforcement 201. It should be noted that the longitudinal reinforcement 21 is overlapped at the overlap position of the first reinforcement 200 and the second reinforcement 201 to form a complete reinforcement skeleton 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 the longitudinal reinforcement 21 is for demonstration only and should not be construed as a limitation on the configuration of the longitudinal reinforcement 21.

[0046] Furthermore, the studs 4 are welded to the side walls of the steel sections 3. It should be noted that in this embodiment, a plurality of studs 4 are welded to the side walls of the steel sections 3, and the studs 4 are evenly arranged on the steel sections 3 in the horizontal and vertical directions and extend outward from the side walls of the steel sections 3, which can increase the anchoring effect between the steel sections 3 and the concrete giant column 1, so that the steel sections 3 can form a whole with the concrete structure 1 and jointly bear the external force load.

[0047] As an optional embodiment, in Figure 6 In the illustrated example, the steel skeleton 2 is rectangular, and the stirrups 20 may further include diagonal steel bars 202, which are arranged in the horizontal direction and connected to the longitudinal bars 21 located on different sides at the corners, thereby improving the stability of the steel skeleton 2. After concrete is subsequently poured into the pouring cavity 6, the anchoring effect between the steel skeleton 2 and the concrete giant column 1 is further increased to bear the force together.

[0048] In another embodiment, please refer to Figures 7 to 11 The present invention also provides a construction method for a separated steel-concrete composite column, which is applied to the separated steel-concrete composite column as described above, comprising:

[0049] Step S1: hoisting a plurality of steel sections 3 into place respectively;

[0050] Step S2: tying a steel bar skeleton 2 around the periphery of a plurality of steel sections 3;

[0051] Step S3: setting a temporary template 5 on the periphery of the steel skeleton 2 to form a pouring cavity 6;

[0052] Step S4: pouring concrete into the pouring cavity 6 to form the concrete structure 1, and removing the temporary formwork 5 after curing is completed.

[0053] It should be noted that, in an optional embodiment, in step S1, Figure 8 As shown, a crane or a lifting mechanism is used to hoist the steel section 3. The steel section 3 and the bolts 4 are prefabricated, and the bolts 4 are welded to the side walls of the steel section 3 in the prefabrication factory. In step S2, a complete steel skeleton 2 can be pre-tied and hoisted. The steel skeleton 2 is hoisted by a crane or a lifting mechanism so that the steel skeleton 2 is sleeved on the outside of the steel section 3. It can also be tied on site based on the placement position of the steel section 3, and finally formed as shown in FIG. Fig. 9 In step S3, a temporary template 5 is used to surround the outer periphery of the steel skeleton 2, and a pouring cavity 6 for concrete pouring is formed inside the steel skeleton 2 and the steel section 3 are both located in the pouring cavity 6 (such as Fig.10 In step S4, concrete is poured into the pouring cavity 6, and the temporary formwork 5 is removed after curing for a certain period of time, and finally a concrete structure is formed as shown in FIG. Fig.11 The concrete structure shown is 1.

[0054] With such configuration, multiple steel sections 3 are separately arranged and not connected to each other. Since the weight per unit length of a single steel section 3 is reduced, it is convenient to hoist a single steel section 3 with a longer length, so that the welding amount of the steel sections 3 in the same column section is greatly reduced, reducing the adverse effects of residual stress and weld defects. As the welding amount is reduced, the labor cost is reduced accordingly, and the construction period is also shortened.

[0055] In summary, the separated steel-concrete composite giant column provided in the embodiment of the present invention includes: a concrete giant column, a steel frame and a plurality of steel sections; the steel frame and the steel sections are both embedded in the concrete giant column; a plurality of mutually unconnected accommodating cavities are provided in the steel frame, the size of the accommodating cavities is set in one-to-one correspondence with the size of the steel sections, and the steel sections are arranged in the accommodating cavities; the plurality of steel sections are not connected to each other, and a plurality of bolts are arranged on the side walls of the steel sections, and the bolts are arranged to extend outward from the side walls of the steel sections.

[0056] With this configuration, by setting up multiple steel sections separately and not connecting them to each other, the steel skeleton can be arranged throughout the entire composite column section, so that the independent steel sections can form a whole with the surrounding concrete structure and work together better. And because the weight per unit length of a single steel section is reduced, it is convenient to hoist a single steel section with a longer length, which greatly reduces the amount of steel section welding in the same column section, reducing the adverse effects of residual stress and weld defects. At the same time, the separately arranged steel sections can be flexibly arranged in the column section to meet the needs of column sections of different shapes. In addition, with the reduction in welding, labor costs are reduced and construction period is shortened.

[0057] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A separated steel-concrete composite giant column, comprising: Concrete giant columns, steel skeletons and multiple steel sections; The steel reinforcement skeleton and the steel sections are embedded in the concrete giant column; The steel bar skeleton is provided with a plurality of mutually unconnected accommodating cavities, the size of the accommodating cavities is set in one-to-one correspondence with the size of the steel sections, and the steel sections are arranged in the accommodating cavities; The plurality of steel sections are not connected to each other, and a plurality of bolts are arranged on the side walls of the steel sections, and the bolts extend outward from the side walls of the steel sections.

2. The separated steel-concrete composite megacolumn according to claim 1, characterized in that: The steel reinforcement skeleton includes stirrups and longitudinal bars; The longitudinal reinforcement is arranged perpendicular to the stirrups and parallel to the axial direction of the steel section; The stirrups are arranged around the steel section and are disconnected at the outer edge of the steel section to form the accommodating cavity.

3. The separated steel-concrete composite megacolumn as claimed in claim 2, characterized in that: The side wall of the steel section is in contact with the stirrup or there is a gap between them; the stud is in contact with the stirrup or there is a gap between them.

4. The separated steel-concrete composite megacolumn according to claim 1, characterized in that: The studs are welded to the side walls of the steel sections.

5. The separated steel-concrete composite megacolumn as claimed in claim 1, characterized in that: The cross-sectional shapes of the plurality of steel sections are the same or different.

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