Large-size stiff column internally provided with four-corner column core and manufacturing method of large-size stiff column

Abstract

The invention provides a large-size stiff column internally provided with four-corner column cores and a manufacturing method thereof.The large-size stiff column internally provided with the four-corner column cores comprises a square hoop, a cross-shaped latticed column is arranged in the middle of the interior of the square hoop, core columns are arranged at the four corners of the square hoop correspondingly, and the cross-shaped latticed column is provided with two opposite first flanges in the first direction; each first flange is connected with the adjacent core column through a connecting key in the second direction, and the first direction is perpendicular to the second direction. The core columns at the four corners are fastened through the square hoop, meanwhile, each core column is connected with the cross-shaped latticed column in the middle of the square hoop through the connecting keys, and the large-size stiff column is separated into four independent columns and a small-size section steel core tube through the connecting and reinforcing effect of the cross-shaped latticed column in the middle of the square hoop; an independent small internal frame-core tube effect is formed, the torsional resistance of the large-size stiff column under the action of earthquake force is improved, and the problem that due to the fact that the plane size of a concrete vertical component is too large, inclined cracks of corners are increased is solved.

Description

Technical Field

[0001] The present application relates to the technical field of building structures, and in particular to a large-sized rigid column with a quadrangular column core disposed therein and a method for manufacturing the large-sized rigid column with a quadrangular column core disposed therein. Background Art

[0002] Large public building structures have upper cantilevered steel structure canopies. Due to the long cantilever length, the axial force and bending moment of the bottom support of the steel structure are huge. The bottom stand columns are generally made of steel concrete columns. From the force calculation and analysis, the bottom concrete frame columns are very long. The vertical longitudinal reinforcement of conventional frame columns is evenly arranged around the column. If the bending moment is too large and the corner longitudinal reinforcement is large, parallel reinforcement is generally adopted. According to relevant specifications, the parallel reinforcement method not only increases the anchorage length and lap length according to the equivalent diameter, but also increases the thickness of the concrete protective layer. In addition, in high-intensity areas, after the frame columns are subjected to seismic forces, the parallel reinforcement at the corners will cause the steel bars to separate, and there is a risk of increased diagonal cracks at the corners. Summary of the invention

[0003] In view of this, the purpose of the present application is to provide a large-sized rigid column with a quadrangular column core and a method for manufacturing the same, so as to solve the problem in the prior art that the planar dimensions of the concrete vertical components are too large, resulting in increased oblique cracks in the corners.

[0004] In a first aspect, the present application provides a large-sized rigid column with a quadrangular column core, the rigid column comprising: A square hoop, wherein a cross-shaped lattice column is arranged in the middle part of the square hoop, core columns are arranged at the four corners of the square hoop respectively, the cross-shaped lattice column is arranged with two opposite first flanges in the first direction, each of the first flanges is connected to the adjacent core column through a connecting key in the second direction, and the first direction is perpendicular to the second direction.

[0005] In one embodiment, the square hoop is a rectangular hoop, and the first direction is a direction along a short side of the rectangular hoop.

[0006] In one embodiment, the square hoop is a square hoop, and the first direction is a direction along any side of the square hoop.

[0007] In one embodiment, the core column comprises an angle steel located at the center of each of the four corners of the square hoop, a plurality of first longitudinal steel bars located at the periphery of the angle steel, and a closed stirrup located at the periphery of the plurality of first longitudinal steel bars; and / or The cross-shaped lattice column is provided with two second flanges in the second direction, and a plurality of bolts are provided on the outer side of each first flange and the outer side of each second flange.

[0008] In one embodiment, transverse stirrups and longitudinal stirrups are further provided in the closed stirrups, and the transverse stirrups and the longitudinal stirrups are arranged along the edges of the first longitudinal steel bars; and / or A plurality of second longitudinal steel bars are arranged on the inner side of the square hoop between the core columns, and along the second direction, the second longitudinal steel bars are connected by first tension bars; the plurality of second longitudinal steel bars arranged on the inner side of the square hoop along the second direction are connected to adjacent first longitudinal steel bars by second tension bars.

[0009] In one embodiment, each of the core columns is filled with first concrete, and the top ends of each of the angle steels and each of the first longitudinal steel bars extend to the upper outer side of the first concrete.

[0010] In one embodiment, the positions of the rigid column except the first concrete are filled with the second concrete, and the top ends of the cross-shaped lattice column and each of the second longitudinal steel bars extend to the upper outer side of the second concrete.

[0011] In a second aspect, an embodiment of the present invention provides a method for manufacturing a large-sized rigid column with a quadrangular column core. working methods, including: A concrete foundation is manufactured, and a cross-shaped lattice column is fixed in the middle of the concrete foundation; Fix the core columns at the four corners of the concrete foundation; Connecting two first flanges of the cross-shaped lattice column in the first direction to adjacent core columns in the second direction respectively through connecting keys, wherein the first direction is perpendicular to the second direction; Tighten the square hoops around the periphery of the four stems.

[0012] In one embodiment, the method for preparing the core column comprises: Fixing angle steel on each second embedded plate; Tie the first longitudinal reinforcement around the periphery of each angle steel; Install closed stirrups around the longitudinal reinforcement; Transverse stirrups and longitudinal stirrups are arranged in the closed stirrups along the edges of the first longitudinal reinforcement.

[0013] In one embodiment, a first embedded plate is fixed in the concrete foundation, and the cross-shaped lattice column is fixed on the first embedded plate; and / or The four corners of the concrete foundation are respectively fixed with second embedded plates, and each core column is fixed to the corresponding second embedded plate; and / or The cross-shaped lattice column is provided with two second flanges in the second direction, and a plurality of bolts are provided on the outer side of each first flange and the outer side of each second flange; and / or A second longitudinal steel bar is installed inside the square hoop between the core columns, a first tie bar is installed between the second longitudinal steel bars along the second direction, and a plurality of second longitudinal steel bars arranged along the second direction are connected to adjacent first longitudinal steel bars inside the square hoop through the second tie bar; and / or The first concrete is poured on each core column. 80 h to 150 h after the first concrete is poured, the second concrete is used to pour the remaining parts of the rigid column except the core column.

[0014] The square hoop of the present application fastens the four-corner core column, and at the same time, each core column is connected to the cross-shaped lattice column in the middle of the square hoop through a connecting key. The independent four-corner reinforced core column can play a force-bearing mechanism similar to that of the lattice column under rare earthquakes. Through the connection and reinforcement of the cross-shaped lattice column in the middle of the square hoop, the large-sized rigid column is separated into four independent columns and a small steel core tube, forming an independent small internal frame-core tube effect, increasing the torsional resistance of the large-sized rigid column under the action of seismic force, playing a significant role in seismic torsion, greatly improving the seismic function, and avoiding the problem of increased oblique cracks in the corners due to the excessively large plane size of the concrete vertical components. Even in the case of the internal concrete of the large-sized rigid column being broken and peeled off, the independent "safety island" effect inside the present application plays a better role in seismic torsion resistance, further solving the effect of extremely degraded stiffness due to the peeling of concrete in the giant concrete column under rare earthquakes. In addition, the core columns added at the four corners of the present application also solve the defects of using a large number of parallel reinforcements at the corners, which leads to a large amount of reinforcement, a long anchorage length, and an unreliable anchorage connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments are briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present application, but are not intended to limit the present application, wherein: Figure 1 A top view of a cross-shaped lattice column according to an embodiment of the present application; Figure 2 A top view of a cross-shaped lattice column and angle steel according to an embodiment of the present application; Figure 3 A three-dimensional diagram of a cross-shaped lattice column and angle steel according to an embodiment of the present application; Figure 4 A top view of a core column according to an embodiment of the present application; Figure 5 A top view of a cross-shaped lattice column and a core column according to an embodiment of the present application; Figure 6 A three-dimensional diagram of a cross-shaped lattice column and a core column according to an embodiment of the present application; Figure 7 This is a top view of the cross-shaped lattice column and the core column after being connected in the embodiment of the present application; Figure 8 This is a three-dimensional diagram of the connection between the Chinese-shaped lattice column and the core column of the embodiment of the present application; Fig. 9 This is a top view of the core column after the first concrete is poured in the embodiment of the present application; Fig.10 This is a three-dimensional diagram of the core column after the first concrete is poured in the embodiment of the present application; Fig.11 This is a top view of a large-sized stiffening column after processing in an embodiment of the present application; Fig.12 This is a three-dimensional diagram of the large-sized rigid column after the construction of the embodiment of this application is completed.

[0016] Description of reference numerals: 1- cross lattice column, 11- first web, 12- second web, 13- first flange, 14- second flange, 15- stud, 2- core column, 21- angle steel, 22- first longitudinal reinforcement, 23- closed stirrups, 24- transverse stirrups, 25- longitudinal stirrups, 3- second longitudinal reinforcement, 4- connection key, 5- first tension bar, 6- second tension bar, 7- square stirrup. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0018] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a unique orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0019] In the application, the word "exemplary" is used to mean "serving as an example, illustration, or description". Any embodiment described in the present application as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is given to enable any technician in the field to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, known structures and processes are not described in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles disclosed in the present application.

[0020] To facilitate understanding of the scheme of the present application, the spline curves and arrows used in the drawings are explained here: the components indicated by the spline curves without arrows are solid components, that is, components with solid structures; the components indicated by the spline curves with arrows are virtual components, that is, components without solid structures.

[0021] See also Figure 7-8 The embodiment of the present application provides a large-sized rigid column with a quadrangular column core, the rigid column comprising: A square hoop 7, wherein a cross-shaped lattice column 1 is arranged in the middle part of the square hoop 7, and core columns 2 are arranged at the four corners of the square hoop 7 respectively. The cross-shaped lattice column 1 is provided with two opposite first flanges 13 in the first direction, and each of the first flanges 13 is connected to the adjacent core column 2 in the second direction through a connecting key 4, and the first direction is perpendicular to the second direction.

[0022] It can be understood that when processing the rigid column of the present application, a concrete foundation is first made, and the first embedded plate is fixed on the concrete foundation, and the cross-shaped lattice column 1 is fixed on the first embedded plate; the second embedded plates are respectively fixed on the four corners of the concrete foundation, and each core column 2 is fixed on the corresponding second embedded plate.

[0023] In some embodiments, the cross-shaped lattice column 1 includes mutually perpendicular In some embodiments, the core column 2 is in any one of a cube, a cylinder or a cuboid shape.

[0024] See also Figure 1-3 In some embodiments, the cross-shaped lattice column 1 includes a first web 11 and a second web 12, and the first web 11 and the second web 12 are cross-fixed. It can be understood that the first web 11 and the second web 12 can be welded and fixed, or can be directly cut and formed.

[0025] Further, the first web 11 is provided with first flanges 13 on opposite sides, and the second web 12 is provided with second flanges 14 on opposite sides. It can be understood that the first flange 13 and the second flange 14 can be formed by welding or cutting. It can also be understood that the first direction is the direction along the width of the first web 11, and the second direction is the direction along the width of the second web 12.

[0026] In some embodiments, the connection key 4 includes any one of a steel bar, a steel pipe, and an angle steel 21 .

[0027] It can be understood that the connecting key 4 is used to connect the cross-shaped lattice column 1 with the four corner core columns 2. It can also be understood that the square hoop 7 is provided with multiple layers along the length direction of the rigid column to tighten the outer periphery of the core column 2.

[0028] In the present application, the square hoop 7 fastens the four-corner core column 2, and at the same time, each core column 2 is connected to the cross-shaped lattice column 1 in the middle of the square hoop 7 through the connecting key 4. The independent four-corner reinforced core column 2 can play a force-bearing mechanism similar to that of the lattice column under rare earthquakes. Through the connection and reinforcement of the cross-shaped lattice column 1 in the middle of the square hoop 7, the large-sized rigid column is separated into four independent columns and a small steel core tube, forming an independent small internal frame-core tube effect, increasing the torsional resistance of the large-sized rigid column under the action of seismic force, playing a significant role in seismic torsion, greatly improving the seismic function, and avoiding the problem of increased oblique cracks in the corners due to the excessively large plane size of the concrete vertical components. Even in the case of the internal concrete of the large-sized rigid column being broken and peeled off, the independent "safety island" effect inside the present application plays a better role in seismic torsion, further solving the effect of the extremely degraded stiffness due to the peeling of concrete in the giant concrete column under rare earthquakes. In addition, the core columns 2 added at the four corners of the present application also solve the defects of using a large number of parallel reinforcements at the corners, which leads to a large amount of reinforcement, a long anchoring length, and an unreliable anchoring connection.

[0029] See also Figure 7-8 In some embodiments, the square hoop 7 is a rectangular hoop 7 , and the first direction is a direction along the short side of the rectangular hoop 7 .

[0030] Furthermore, the core column 2 is in a cube shape, and the length of the square side of the core column 2 cube is less than or equal to 1 / 3 of the length of the short side of the rectangular hoop 7 .

[0031] In some embodiments, the square hoop 7 is a square hoop 7 , and the first direction is a direction along any side of the square hoop 7 .

[0032] See also Figure 4-6In some embodiments, the core column 2 includes an angle steel 21 located at the center of each four corners of the square hoop 7, a plurality of first longitudinal steel bars 22 located at the periphery of the angle steel 21, and a closed hoop 23 located at the periphery of the plurality of first longitudinal steel bars 22.

[0033] Furthermore, the shape of the angle steel 21 is any one of an I-shape, a cross shape, a field shape, a zi-shape, and a mouth shape. It can be understood that the I-shape, cross shape, field shape, zi-shape, and mouth-shaped angle steel 21 can be a finished structure or can be welded into shape.

[0034] It can be understood that the angle steel 21, the plurality of first longitudinal steel bars 22 on the periphery of the angle steel 21, and the plurality of closed stirrups 23 on the periphery of the first longitudinal steel bars 22 constitute a complete core column 2. It can also be understood that the closed stirrups 23 are provided with multiple layers along the length direction of the first longitudinal steel bars 22, so that the plurality of first longitudinal steel bars 22 can be well surrounded and tightened.

[0035] See also Figure 4 In some embodiments, transverse stirrups 24 and longitudinal stirrups 25 are further provided in the closed stirrups 23 , and the transverse stirrups 24 and the longitudinal stirrups 25 are arranged along the edge of the first longitudinal steel bar 22 .

[0036] It can be understood that the transverse stirrups 24 and the longitudinal stirrups 25 are arranged along the edge of the first longitudinal reinforcement 22, and the transverse stirrups 24 and the longitudinal stirrups 25 are arranged crosswise to fix the first longitudinal reinforcement 22, so that the core column 2 is strong, and the angle steel 21 is located at the center of the closed stirrups 23, so that the entire core column 2 is stable and strong. It can also be understood that each layer of closed stirrups 23 is provided with transverse stirrups 24 and longitudinal stirrups 25.

[0037] See also Figure 7-8 In some embodiments, a plurality of second longitudinal steel bars 3 are arranged on the inner side of the square hoop 7 between the core columns 2, and the second longitudinal steel bars 3 are connected by first tension bars 5 along the second direction; the plurality of second longitudinal steel bars 3 arranged on the inner side of the square hoop 7 along the second direction are connected to the adjacent first longitudinal steel bars 22 by second tension bars 6.

[0038] It can be understood that along the second direction, i.e., the direction perpendicular to the connection key 4, the second longitudinal reinforcements 3 are connected by the first tie bars 5, which further increases the compactness and stability of the large-size rigid column. It can be understood that along the length direction of the first longitudinal reinforcement 22 and the second longitudinal reinforcement 3, multiple layers of first tie bars 5 and second tie bars 6 are arranged. It can also be understood that when the first tie bars 5 intersect the web of the core column 2, a hole can be opened in the web so that the first tie bars 5 pass through the hole and are connected to the two opposite second longitudinal reinforcements 3 along the second direction, or the first tie bars 5 can be welded on both sides of the web. It can also be understood that the second tie bars 6 are oblique tie bars, and the second tie bars 6 further connect the core column 2 with the square hoop 7 as a whole, and the entire large-size rigid column is stable and strong.

[0039] See also Figure 9-10 In some embodiments, each core column 2 is filled with first concrete, and the top of each angle steel 21 and each first longitudinal steel bar 22 extends to the upper outer side of the first concrete. It can be understood that the core column 2 structure is first cast with the first concrete to avoid the influence of hydration heat of large-sized concrete, which greatly reduces temperature stress.

[0040] See also Figure 11-12 In some embodiments, the positions of the rigid columns except the first concrete are filled with the second concrete, and the top ends of the cross lattice column 1 and each of the second longitudinal reinforcements 3 extend to the upper outer side of the second concrete. The second concrete is used to cast the remaining parts of the rigid columns except the core column 80 h to 150 h after the first concrete is poured. It can be understood that the position where the second concrete is poured is the position between the core columns, and the second concrete is tightly and seamlessly connected to the first concrete. It can also be understood that the method of pouring the first concrete in advance for the four-corner core column 2 and pouring the second concrete for the remaining part can solve the adverse effects of hydration heat in large-size concrete construction and greatly reduce temperature stress.

[0041] In some embodiments, the first concrete includes C30 concrete or C35 concrete.

[0042] In some embodiments, the second concrete includes C35 concrete or C40 concrete, and an expansive agent is further added, wherein the mass of the expansive agent is 0.1% to 0.5% of the mass of the C35 concrete or C40 concrete, for example, it can be 0.1%, 0.15%, 0.2%, 0.25%, 0.3%, 0.35%, 0.4%, 0.45%, 0.5%, etc.

[0043] In some embodiments, the swelling agent comprises UEA or HEA.

[0044] In some embodiments, the cross-shaped lattice column 1 is provided with two second flanges 14 in the second direction, and a plurality of studs 15 are provided on the outer side of each first flange 13 and the outer side of each second flange 14. It can be understood that the studs 15 are prefabricated on site or in a factory, and are connected to the first flange 13 and the second flange 14 by welding, so that the bond strength between the studs 15 and the concrete is enhanced, the shear resistance is strong, the overall structure is more stable, and the operation is convenient during the installation process.

[0045] See also Figure 1 The embodiment of the present application also provides a method for manufacturing a large-sized rigid column with a quadrangular column core therein, which can be used to manufacture the large-sized rigid column with a quadrangular column core therein of the aforementioned embodiment.

[0046] See also Figure 1-8 In some embodiments, the manufacturing method includes: S01, making a concrete foundation, and fixing a cross-shaped lattice column 1 in the middle of the concrete foundation; S02, fixing core columns 2 at the four corners of the concrete foundation; S03, connecting two first flanges 13 of the cross-shaped lattice column 1 in the first direction to the adjacent core columns 2 in the second direction through the connecting key 4, wherein the first direction is perpendicular to the second direction; S04, fasten the square hoop 7 to the outer circumference of the four core columns 2.

[0047] In the S01: In some embodiments, a first embedded plate is fixed in the concrete foundation, and the cross-shaped lattice column 1 is fixed on the first embedded plate. It can be understood that the material of the first embedded plate is a steel plate, and the fixing method can be welding.

[0048] In the S02: In some embodiments, the four corners of the concrete foundation are respectively fixed with second embedded plates, and each core column 2 is fixed to the corresponding second embedded plate. It can be understood that each second embedded plate is fixed with a core column 2, and the fixing method can be welding, and the material of the second embedded plate is steel plate.

[0049] Exemplarily, the first embedded plate and the second embedded plate can be used as a whole, that is, the whole embedded plate is fixed on the concrete foundation, so that the processing is convenient and the cross-shaped lattice column 1 and the core column 2 are fixed stably and firmly.

[0050] As another example, the first embedded plate and the second embedded plate are fixed on the concrete foundation at the bottom of the cross-shaped lattice column 1 and each core column 2, respectively, so that materials are saved and processing is convenient.

[0051] See also Figure 2-6 In some embodiments, the method for preparing the core column 2 includes: S021, fixing angle steel 21 on each second embedded plate; S022, tying the first longitudinal steel bars 22 on the periphery of each angle steel 21; S023, installing closed stirrups 23 on the periphery of the longitudinal reinforcement; S024. Arrange transverse stirrups 24 and longitudinal stirrups 25 along the edge of the first longitudinal reinforcement 22 in the closed stirrups 23.

[0052] In some embodiments, the shape of the core column 2 includes any one of a cylindrical shape, a rectangular parallelepiped shape and a cube shape.

[0053] Exemplarily, the core column 2 is in the shape of a cube, the peripheral longitudinal steel bars of the angle steel 21 form a cube, and the angle steel 21 is located at the center of the cube.

[0054] It can be understood that the closed stirrups 23 have multiple layers, and in each layer of the closed stirrups 23 , transverse stirrups 24 and longitudinal stirrups 25 are arranged along the edge of the first longitudinal steel bar 22 .

[0055] In said S03: See also Figure 5-6 In some embodiments, the cross-shaped lattice column 1 is provided with two second flanges 14 in the second direction, and a plurality of studs 15 are provided on the outer side of each first flange 13 and the outer side of each second flange 14. It is understood that the studs 15 can be welded on site or prefabricated in a factory, so that the holding force between the studs 15 and the first flange 13 and / or the second flange 14 is enhanced, the shear resistance is strong, the overall structure is more stable, and the operation is convenient during the installation process.

[0056] In said S04: See also Figure 7-8 In some embodiments, the second longitudinal reinforcement 3 is installed inside the square hoop 7 between the core columns 2.

[0057] Further, along the second direction, the first tensioning bars 5 are installed between the second longitudinal reinforcements 3; Furthermore, a plurality of second longitudinal reinforcements 3 arranged along the second direction are connected to adjacent first longitudinal reinforcements 22 inside the square hoop 7 through second reinforcements 6. It can be understood that the second reinforcements 6 are oblique reinforcements.

[0058] It can be understood that multiple layers of first and second tension bars 5 and 6 are arranged along the length direction of the first and second longitudinal reinforcements 22 and 3 .

[0059] It can be understood that when the first tensioning bar 5 intersects the web of the core column 2, a hole can be opened in the web so that the first tensioning bar 5 passes through the hole and is connected to two opposite second longitudinal steel bars 3 along the second direction, or the first tensioning bar 5 can be welded on both sides of the web.

[0060] Furthermore, first concrete is poured on each core column 2 .

[0061] Furthermore, the second concrete is used to pour the remaining parts of the rigid column except the core column 80 h to 150 h after the first concrete is poured.

[0062] It can be understood that after pouring the first concrete for 80 h to 150 h, for example, 80 h, 90 h, 100 h, 110 h, 120 h, 130 h, 140 h, 150 h, etc., the compressive strength of the first concrete can reach 70% of the designed compressive strength within the time range.

[0063] The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only for example and does not constitute a limitation of the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements and amendments to the present application. Such modifications, improvements and amendments are suggested in the present application, so such modifications, improvements and amendments still belong to the spirit and scope of the exemplary embodiments of the present application.

[0064] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

Claims

1. A large-sized rigid column with a quadrangular column core, characterized in that: The rigid column comprises: A square hoop, wherein a cross-shaped lattice column is arranged in the middle part of the square hoop, core columns are arranged at the four corners of the square hoop respectively, the cross-shaped lattice column is arranged with two opposite first flanges in the first direction, each of the first flanges is connected to the adjacent core column through a connecting key in the second direction, and the first direction is perpendicular to the second direction.

2. The large-size rigid column with a quadrangular column core according to claim 1, characterized in that: The square hoop is a rectangular hoop, and the first direction is a direction along the short side of the rectangular hoop.

3. The large-size rigid column with a quadrangular column core according to claim 1, characterized in that: The square hoop is a square hoop, and the first direction is a direction along any side of the square hoop.

4. The large-size rigid column with a quadrangular column core according to claim 1, characterized in that: The core column comprises an angle steel located at the center of each of the four corners of the square hoop, a plurality of first longitudinal steel bars located at the periphery of the angle steel, and a closed stirrup located at the periphery of the plurality of first longitudinal steel bars; and / or The cross-shaped lattice column is provided with two second flanges in the second direction, and a plurality of bolts are provided on the outer side of each first flange and the outer side of each second flange.

5. The large-sized rigid column with a quadrangular column core according to claim 4, characterized in that: The closed stirrups are further provided with transverse stirrups and longitudinal stirrups, and the transverse stirrups and the longitudinal stirrups are arranged along the edge of the first longitudinal steel bar; and / or A plurality of second longitudinal steel bars are arranged on the inner side of the square hoop between the core columns, and along the second direction, the second longitudinal steel bars are connected by first tension bars; the plurality of second longitudinal steel bars arranged on the inner side of the square hoop along the second direction are connected to adjacent first longitudinal steel bars by second tension bars.

6. The large-size rigid column with a quadrangular column core according to claim 4, characterized in that: Each core column is filled with first concrete, and the top ends of each angle steel and each first longitudinal steel bar extend to the upper outer side of the first concrete.

7. The large-sized rigid column with a quadrangular column core according to claim 6, characterized in that: The positions of the rigid column except the first concrete are filled with the second concrete, and the top ends of the cross-shaped lattice column and each of the second longitudinal steel bars extend to the upper outer side of the second concrete.

8. A method for manufacturing a large-sized rigid column with a quadrangular column core, characterized in that: include: A concrete foundation is made, and a cross-shaped lattice column is fixed in the middle of the concrete foundation; Fix the core columns at the four corners of the concrete foundation; Connecting two first flanges of the cross-shaped lattice column in the first direction to adjacent core columns in the second direction respectively through connecting keys, wherein the first direction is perpendicular to the second direction; Tighten the square hoop around the periphery of the four stems.

9. The manufacturing method according to claim 8, characterized in that: The preparation method of the core column comprises: Fixing angle steel on each second embedded plate; Tie the first longitudinal reinforcement around the periphery of each angle steel; Install closed stirrups around the longitudinal reinforcement; Transverse stirrups and longitudinal stirrups are arranged in the closed stirrups along the edges of the first longitudinal reinforcement.

10. The method according to claim 9, characterized in that: A first embedded plate is fixed in the concrete foundation, and a cross-shaped lattice column is fixed on the first embedded plate; and / or The four corners of the concrete foundation are respectively fixed with second embedded plates, and each core column is fixed to the corresponding second embedded plate; and / or The cross-shaped lattice column is provided with two second flanges in the second direction, and a plurality of bolts are provided on the outer side of each first flange and the outer side of each second flange; and / or A second longitudinal steel bar is installed inside the square hoop between the core columns, a first tie bar is installed between the second longitudinal steel bars along the second direction, and a plurality of second longitudinal steel bars arranged along the second direction are connected to adjacent first longitudinal steel bars inside the square hoop through the second tie bar; and / or The first concrete is poured on each core column. 80 h to 150 h after the first concrete is poured, the second concrete is used to pour the remaining parts of the rigid column except the core column.

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