A tie rod fixing structure in a steel-concrete composite column

Abstract

This utility model discloses a tie-bar fixing structure for a steel-concrete composite column, comprising a steel section and a reinforcing cage surrounding the steel section. Multiple structural longitudinal bars are arranged on the wall of the steel section facing the reinforcing cage. These structural longitudinal bars are arranged longitudinally along the steel section and are welded to the outer wall of the steel section via multiple lapped reinforcing bars spaced apart in the longitudinal direction. The two ends of the tie bars are respectively tied to the reinforcing cage and the structural longitudinal bars. This utility model eliminates the need for pre-drilling holes in the steel section for the tie bars, preserving the strength of the steel section and effectively ensuring the load-bearing capacity of the structural column. The structural longitudinal bars are welded on-site, making construction convenient and fast, and reducing construction costs.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically to a tie rod fixing structure in a steel-concrete composite column. Background Technology

[0002] Steel-concrete composite columns (SRC columns) combine the advantages of steel and concrete structures by working together with steel sections (such as H-beams and box-shaped steel sections) and encased concrete. They have high strength, high load-bearing capacity, high construction efficiency, and excellent fire resistance, corrosion resistance, and durability. They are widely used in high-rise and super high-rise buildings, stadiums and other large-span structures, as well as industrial buildings such as factories and power plants.

[0003] In steel-concrete composite columns, stirrups need to be effectively connected to the steel section via tie bars to form an integral load-bearing system. Currently, there are two main tie methods: one is to drill holes in the steel section, and the other is to weld connecting plates to the steel section. Specific forms are as follows: Figure 1 and Figure 2 As shown.

[0004] exist Figure 1 In the shown steel section opening configuration, steel section 1 has a pre-drilled through-hole, and tie rod 5 passes through both ends of the through-hole on steel section 1 and is tied and fixed to the reinforcing cage 2. Due to the existence of precision deviations on the construction site, the through-hole construction of tie rods is difficult and inefficient; in addition, the opening will reduce the cross-sectional area of ​​steel section 1, which will have an adverse effect on the load-bearing capacity of the structure.

[0005] exist Figure 2 In the shown connecting plate configuration, a connecting plate 6 is welded to the outer wall of the steel section 1 corresponding to each tie rod 5. The two ends of the tie rod 5 are respectively connected and fixed to the connecting plate 6 and the reinforcing cage 2. In this scheme, the large number of connecting plates 6 not only increases the amount of welding work but also increases the construction cost. Utility Model Content

[0006] To address the aforementioned shortcomings, the technical problem to be solved by this utility model is to provide a tie-bar fixing structure for steel-concrete composite columns, thereby solving the problems of high construction difficulty, reduced structural load-bearing capacity, or increased construction costs associated with existing technologies.

[0007] Therefore, this application provides a tie-and-fix structure for steel-concrete composite columns, including steel sections and a reinforcing cage surrounding the steel sections. Multiple structural longitudinal bars are provided on the wall surface of the steel sections facing the reinforcing cage. The structural longitudinal bars are arranged along the longitudinal direction of the steel sections and are welded and fixed to the outer wall surface of the steel sections by multiple lapped steel bars arranged at intervals in the longitudinal direction. The two ends of the tie bars are respectively tied and fixed to the reinforcing cage and the structural longitudinal bars.

[0008] In the above technical solution, preferably, the lapped reinforcing bars arranged at intervals form multiple gaps between the structural longitudinal bars and the outer wall surface of the steel section, one end of the tie bar is bent and inserted into the gap and passes around the structural longitudinal bars, and the other end of the tie bar is bent and passes around the reinforcing cage.

[0009] In the above technical solution, preferably, the steel section is a box-shaped steel section, and the reinforcing cage is a box-shaped reinforcing cage.

[0010] In the above technical solution, preferably, the longitudinal reinforcement is Φ20 steel bar, and the lap reinforcement is Φ20@600 steel bar.

[0011] In the above technical solution, preferably, the lapped reinforcing bar is welded to the structural longitudinal reinforcement and the steel section on both sides for a length of 70cm.

[0012] As can be seen from the above technical solution, the tie-bar fixing structure in the steel-concrete composite column provided by this utility model solves the problems of high construction difficulty, reduced structural load-bearing capacity, or increased construction costs associated with existing technologies. Compared with existing technologies, this utility model has the following beneficial effects:

[0013] Structural longitudinal bars are welded to the wall surface of the steel section facing the reinforcing cage. The two ends of the tie bars are respectively tied and fixed to the reinforcing cage and the structural longitudinal bars. There is no need to pre-drill holes in the steel section for the tie bars to pass through, the strength of the steel section is not affected, and the load-bearing performance of the structural column is effectively guaranteed. The structural longitudinal bars are welded on site, which is convenient and fast for construction and has a low construction cost. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments of this utility model or the prior art will be briefly introduced and explained below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the existing technology where the tie rod is fixed to the steel section by opening a hole;

[0016] Figure 2 This is a cross-sectional view of the existing technology in which tie rods are fixed to the steel profiles using connecting plates;

[0017] Figure 3 A schematic diagram of the tie rod fixing structure in the steel-concrete composite column provided by this utility model;

[0018] Figure 4 This is a partial longitudinal schematic diagram of the connection between the tie rod and the steel section through the structural longitudinal reinforcement in this utility model.

[0019] Figures 1-4 The correspondence between the parts is as follows:

[0020] 1. Steel section, 2. Reinforcing cage, 3. Structural longitudinal reinforcement, 4. Lap reinforcement, 5. Tie bar, 6. Connecting plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the embodiments described below are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] To provide a clearer explanation and description of the technical solution and implementation method of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are introduced below.

[0023] It should be noted that the directional terms such as "inner" and "outer", "front" and "back" and "left" and "right" in this article are based on the product's usage status. Obviously, the use of these directional terms does not limit the scope of protection of this solution.

[0024] In the following description, the same reference numerals are used for the same components in this application and in the prior art.

[0025] like Figure 3 , Figure 4 As shown, the present invention provides a tie-and-fix structure for a steel-concrete composite column, comprising a steel section 1 and a steel cage 2 arranged in a ring around the steel section 1. Multiple structural longitudinal bars 3 are arranged on the wall surface of the steel section 1 facing the steel cage 2. The structural longitudinal bars 3 are arranged along the longitudinal direction of the steel section 1 and are welded and fixed to the outer wall surface of the steel section 1 by multiple lapped steel bars 4 arranged at intervals in the longitudinal direction. The two ends of the tie bars 5 are respectively tied and fixed to the steel cage 2 and the structural longitudinal bars 3.

[0026] Specifically, the lapped reinforcing bars 4 are spaced apart, forming multiple gaps between the structural longitudinal bars 3 and the outer wall of the steel section 1. One end of the tie bar 5 is bent and inserted into the gap and passes around the structural longitudinal bars 3, while the other end is bent and passes around the reinforcing cage 2, thereby achieving the connection between the tie bar 5 and the steel section 1.

[0027] In this application, the steel section 1 is a box-shaped steel, and the corresponding steel cage 2 is a box-shaped steel cage.

[0028] Among them, the structural longitudinal reinforcement 3 uses Φ20 steel bars, the lapped reinforcement 4 uses Φ20@600, and the lapped reinforcement 4 is welded to the structural longitudinal reinforcement 3 and the steel section 1 on both sides for a length of 70cm.

[0029] Compared to pre-drilled openings in the steel profiles, this application eliminates the need for pre-drilling openings in the steel profiles for through-beams, thus preserving the steel profile strength and effectively ensuring the load-bearing capacity of the structural column. Furthermore, the longitudinal reinforcement is welded on-site, making construction convenient and rapid.

[0030] Compared with adding connecting plates, the longitudinal reinforcement in this application is welded to the outer wall of the steel section by lapped steel bars, which reduces the amount of bonding work, and the cost of the longitudinal reinforcement is much lower than that of the connecting plates, thus reducing the construction cost.

[0031] Finally, it should be noted that the terms "comprising," "including," or any other variations thereof as used herein are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a…" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] This utility model is not limited to the above-described preferred embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model.

Claims

1. A tie rod fixing structure in a steel-concrete composite column, characterized in that, The steel structure includes a steel section and a reinforcing cage surrounding the steel section. Multiple structural longitudinal bars are provided on the wall of the steel section facing the reinforcing cage. The structural longitudinal bars are arranged along the longitudinal direction of the steel section and are welded and fixed to the outer wall of the steel section by multiple lapped steel bars arranged at intervals in the longitudinal direction. The two ends of the tie bars are respectively tied and fixed to the reinforcing cage and the structural longitudinal bars.

2. The tie-bar fixing structure in a steel-concrete composite column according to claim 1, characterized in that, The lapped reinforcing bars, spaced apart, form multiple gaps between the structural longitudinal bars and the outer wall of the steel section. One end of the tie bar is bent and inserted into the gap and passes around the structural longitudinal bars, while the other end of the tie bar is bent and passes around the reinforcing cage.

3. The tie-bar fixing structure in a steel-concrete composite column according to claim 1, characterized in that, The steel section is a box-shaped steel section, and the reinforcing cage is a box-shaped reinforcing cage.

4. The tie-bar fixing structure in a steel-concrete composite column according to claim 1, characterized in that, The longitudinal reinforcement is made of Φ20 steel bars, and the lap reinforcement is made of Φ20@600 steel bars.

5. The tie-bar fixing structure in a steel-concrete composite column according to claim 1, characterized in that, The lapped reinforcing bars are welded to the structural longitudinal bars and the steel profiles on both sides for a length of 70cm.

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