A core tube and a construction method thereof

Abstract

The application belongs to the technical field of steel structure, and particularly discloses a core tube and a construction method thereof. The connecting piece is arranged between the two steel columns, and the two ends of the connecting piece are connected with the two steel columns, so that the installation operation between the connecting piece and the steel column is not affected by the installation operation of the steel tube body. That is, after the connecting piece and the steel column are placed in the installation cavity and are not connected with the steel tube body, the installation operation between the connecting piece and the steel column can be completed after the installation operation of the steel tube body is completed, the phenomenon of mutual cross operation in the existing installation process is avoided, the phenomenon of reduced construction efficiency is avoided, and the practicability of the core tube is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of steel structure technology, specifically to a core tube and its construction method. Background Technology

[0002] With the rapid development of China's economy and the continuous improvement of people's living standards, the functional requirements for public buildings have evolved from meeting simple and basic functional needs to developing into architectural works of art with large spaces and aesthetically pleasing structural forms. Faced with complex spatial structural systems and prefabricated steel structure systems, traditional installation methods are proving insufficient in controlling construction costs, timelines, and safety. Therefore, finding a safe, economical, and short-cycle construction method under complex construction conditions is one of the important research areas for addressing the current core tube shear wall connection structural systems.

[0003] The steel columns in the core tube of existing high-rise buildings are mainly installed using a "building block" construction method. This involves specialized construction workers using cranes to hoist the steel components into position and assemble them layer by layer in situ at high altitude. The first steel column is installed after the first section is completed, the reinforcing steel is tied, and the concrete for that floor is poured before installing the next section. The concrete floor slab is then used to provide the surface for the next steel column installation. During installation, the steel columns on each floor are placed on the longitudinal reinforcement of the core tube, which then secures the columns.

[0004] However, during the installation of the steel columns on a certain floor, due to the design consideration of reducing the amount of steel used, each steel component was not installed along a continuous length, but only in a section of the floor area. Each component weighed 2-3 tons. Since the longitudinal reinforcement of the core tube was in a flexible state, there was a great safety hazard in only assessing the binding of the longitudinal reinforcement and stirrups. The longitudinal reinforcement and stirrups needed to be bound in a timely manner to stabilize the longitudinal reinforcement of the core tube. This resulted in overlapping work, which affected the construction efficiency and led to insufficient practicality of the core tube. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is that in the prior art, the longitudinal reinforcement of the core tube is in a flexible state when the steel column of a certain layer is installed, and the longitudinal reinforcement and stirrups need to be tied in time, resulting in overlapping operations and insufficient practicality of the core tube.

[0006] Therefore, the present invention provides a core tube, comprising:

[0007] A steel structure cylinder, wherein an installation cavity is provided inside the steel structure cylinder;

[0008] Multiple steel columns are provided in the mounting cavity, and the multiple steel columns are spaced apart along the extension direction of the steel structure cylinder;

[0009] Multiple connectors, wherein any one of the connectors is located between two adjacent steel columns, and both ends of the connector are respectively connected to the two adjacent steel columns.

[0010] Optionally, the aforementioned core tube,

[0011] The steel column is provided with a first mounting part;

[0012] The connector has two second mounting portions, which are spaced apart along the height direction, and each of the two second mounting portions is connected to the first mounting portion of two adjacent steel columns.

[0013] Optionally, the aforementioned core tube,

[0014] In the first mounting part and the second mounting part, one of them is a limiting groove and the other is a limiting protrusion, and the limiting protrusion is inserted into the limiting groove.

[0015] Optionally, the aforementioned core tube,

[0016] The steel structure cylinder includes multiple longitudinal ribs and multiple stirrups. The longitudinal ribs are spaced apart, and the two ends of any one stirrup are connected to two longitudinal ribs respectively, so that the stirrups and the longitudinal ribs enclose and form an installation cavity.

[0017] A construction method for a core tube, applied to the aforementioned core tube, the construction method comprising:

[0018] Step S1: Install the steel structure tube in the lower floors;

[0019] Step S2: Complete the connection of the two steel columns and one connector;

[0020] Step S3: Use a total station to measure the overall levelness and verticality;

[0021] Step S4: If the horizontality and verticality meet the target values, pour concrete to install the cavity;

[0022] Step S5: After the concrete has set, repeat steps S1 to S5 to complete the construction and installation of the core tube of the adjacent floors above this floor.

[0023] Optionally, in the above-mentioned construction method for the core tube, step S2 includes:

[0024] Step S21: Place a steel frame column inside the installation cavity of the steel structure cylinder;

[0025] Step S22: Securely connect the lower side of the connector to the steel column;

[0026] Step S23: Connect another steel column to the higher side of the connector.

[0027] The technical solution provided by this invention has the following advantages:

[0028] The core tube provided by this invention includes a steel structure tube body, multiple steel columns, and multiple connectors. The steel structure tube body has an internal mounting cavity; the multiple steel columns are all disposed within the mounting cavity, and are spaced apart along the extension direction of the steel structure tube body; any one of the connectors is located between two adjacent steel columns, and both ends of the connector are respectively connected to the two adjacent steel columns.

[0029] The core tube of this structure uses connectors placed between two steel columns, with each end of the connector connected to one of the two steel columns. This ensures that the installation of the connectors and steel columns is not affected by the installation of the steel structure tube. In other words, after the connectors and steel columns are placed in the installation cavity, they are not connected to the steel structure tube. The installation of the connectors and steel columns can be completed after the installation of the steel structure tube, avoiding the phenomenon of overlapping operations that occurs when the installation process is carried out simultaneously in existing solutions. This prevents the reduction in construction efficiency and effectively improves the practicality of the core tube. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 A partial cross-sectional view of the core tube provided for an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of the structure of the steel frame column and connectors in the core tube in the installation state, provided for an embodiment of the present invention;

[0033] Figure 3 A schematic diagram of the structure of the steel frame column and connectors in the core tube in the installation state, provided for an embodiment of the present invention;

[0034] Figure 4 A schematic diagram of the structure of the connector in the core tube provided for an embodiment of the present invention;

[0035] Figure 5 A schematic flowchart of the core tube construction method provided for an embodiment of the present invention;

[0036] Explanation of reference numerals in the attached figures:

[0037] 1-Steel structure cylinder; 11-Longitudinal reinforcement; 12-Stirrups;

[0038] 2-Steel frame column; 21-First installation section;

[0039] 3-Connector; 31-Second mounting part. Detailed Implementation

[0040] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0044] Example 1

[0045] This embodiment provides a core tube, such as Figures 1 to 4 As shown, it includes: a steel structure cylinder 1, multiple steel columns 2, and multiple connectors 3. The steel structure cylinder 1 has an internal mounting cavity; the multiple steel columns 2 are all housed within the mounting cavity and are spaced apart along the extension direction of the steel structure cylinder 1; any connector 3 is located between two adjacent steel columns 2, and both ends of the connector 3 are connected to the two adjacent steel columns 2 respectively.

[0046] The core tube of this structure uses a connector 3 positioned between two steel columns 2, with both ends of the connector 3 connected to the two steel columns 2 respectively. This ensures that the installation of the connector 3 and the steel columns 2 is not affected by the installation of the steel structure tube 1. That is, after the connector 3 and the steel columns 2 are placed in the installation cavity, they do not form a connection with the steel structure tube 1. The installation of the connector 3 and the steel columns 2 can be completed after the installation of the steel structure tube 1 is completed. This avoids the phenomenon of mutual cross-operation that occurs when the installation process is carried out simultaneously in the existing scheme, thereby avoiding the phenomenon of reduced construction efficiency and effectively improving the practicality of the core tube.

[0047] like Figures 1 to 4 As shown, in this embodiment, the core tube has a first mounting part 21 on the steel column 2; the connector 3 has two second mounting parts 31, which are spaced apart along the height direction and are respectively connected to the first mounting parts 21 of two adjacent steel columns 2.

[0048] It can be noted that, in this embodiment, the first mounting part 21 is disposed on the web of the steel column 2.

[0049] It can be noted that the core tube provided in this embodiment does not limit the shape of the connecting member 3; it only requires that any one connecting member 3 can connect two steel columns 2. That is, the core tube provided in this embodiment, such as... Figures 1 to 4 As shown, in the first mounting part 21 and the second mounting part 31, one of them is a limiting groove and the other is a limiting protrusion, and the limiting protrusion is inserted into the limiting groove.

[0050] In one embodiment, the first mounting part 21 is selected as a limiting protrusion, and the second mounting part 31 is selected as a limiting groove.

[0051] It can be explained that in the above embodiment, after the first mounting part 21 is inserted into the second mounting part 31, it is welded and fixed. That is, welding is performed at the contact part of the first mounting part 21 and the second mounting part 31, thereby realizing the fixation between the connector 3 and the two steel column 2.

[0052] like Figures 1 to 4 As shown, the core tube provided in this embodiment, the steel structure tube 1 includes multiple longitudinal ribs 11 and multiple stirrups 12. The multiple longitudinal ribs 11 are spaced apart, and the two ends of any stirrup 12 are respectively connected to two longitudinal ribs 11 so that the stirrups 12 and the longitudinal ribs 11 enclose and form an installation cavity.

[0053] It can be noted that the core tube provided in this embodiment does not limit the number of longitudinal reinforcement 11 and stirrups 12, as long as the longitudinal reinforcement 11 and stirrups 12 form a square installation cavity after installation. In this core tube structure, the connector 3 does not need to be fixed by the longitudinal reinforcement 11 as in the existing solution. That is, during installation, there is no need to consider the installation sequence of the longitudinal reinforcement 11, stirrups 12, connector 3 and steel column 2. It is only necessary to connect the connector 3 to the steel column 2. The installation operation is more flexible, avoiding the phenomenon of reduced construction efficiency in the existing solution, and effectively improving the practicality of the core tube.

[0054] Example 2

[0055] This embodiment provides a construction method for a core tube, which is applied to the core tube provided in Embodiment 1.

[0056] Among them, such as Figure 5 As shown, the construction method for the core tube includes the following steps:

[0057] Step S1: Install the steel structure cylinder 1 in the lower floors;

[0058] Step S2: Complete the connection of the two steel columns 2 and one connector 3;

[0059] Step S3: Use a total station to measure the overall levelness and verticality;

[0060] Step S4: If the horizontality and verticality meet the target values, pour concrete to install the cavity;

[0061] Step S5: After the concrete has set, repeat steps S1 to S5 to complete the construction and installation of the core tube of the adjacent floors above this floor.

[0062] The construction method for the core tube provided in this embodiment, step S2 should include:

[0063] Step S21: Place a steel column 2 inside the installation cavity of the steel structure cylinder 1;

[0064] Step S22: Fix the lower side of the connector 3 to the steel column 2;

[0065] Step S23: Connect another steel column 2 to the higher side of the connector 3.

[0066] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1.A construction method of a core tube, applied to a core tube, characterized in that, the core tube comprises a steel structure tube (1), a plurality of steel columns (2) and a plurality of connecting pieces (3), the steel structure tube (1) is internally provided with a mounting cavity; a plurality of steel columns (2) are arranged in the mounting cavity, and the plurality of steel columns (2) are arranged at intervals along the extension direction of the steel structure tube (1); any connecting piece (3) is located between two adjacent steel columns (2), and the two ends of the connecting piece (3) are connected with the two adjacent steel columns (2) respectively; the construction method of the core tube comprises: step S1: installing the steel structure tube (1) in a lower floor; step S2: completing the connection of two steel columns (2) and one connecting piece (3); step S3: measuring the levelness and verticality of the whole using a total station; step S4: if the levelness and verticality meet the target value, pouring concrete into the mounting cavity; step S5: after the concrete is finally cured, repeating steps S1 to S5 to complete the construction and installation of the core tube of the adjacent floor higher than the floor; wherein, step S2 comprises: step S21: placing one steel column (2) in the mounting cavity inside the steel structure tube (1); step S22: fixedly connecting the lower side of the connecting piece (3) with the steel column (2); step S23: connecting another steel column (2) with the upper side of the connecting piece (3). 2.The construction method of the core tube according to claim 1, characterized in that, the steel column (2) is provided with a first mounting portion (21); the connecting piece (3) is provided with two second mounting portions (31), the two second mounting portions (31) are arranged at intervals along the height direction, and the two second mounting portions (31) are connected with the first mounting portions (21) of the two adjacent steel columns (2) respectively. 3.The construction method of the core tube according to claim 2, characterized in that, in the first mounting portion (21) and the second mounting portion (31), one of them is a limiting groove, and the other is a limiting protrusion, and the limiting protrusion is inserted into the limiting groove. 4.The construction method of the core tube according to any one of claims 1-3, characterized in that, the steel structure tube (1) comprises a plurality of longitudinal reinforcements (11) and a plurality of stirrups (12), the plurality of longitudinal reinforcements (11) are arranged at intervals, and the two ends of any stirrup (12) are connected with two longitudinal reinforcements (11) respectively, so that the stirrup (12) and the longitudinal reinforcement (11) enclose the mounting cavity.

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