Steel reinforced concrete combined asymmetric latticed column

Abstract

A steel-reinforced concrete combined asymmetric latticed column comprises channel steel, long web I-shaped steel, lacing bars, web connecting plates, concrete, lacing bar connecting plates, high-strength bolts and the like. Wherein the section steel part externally coated with the concrete column limb is prefabricated and formed in a factory, and lacing bars are connected only through reserved bolt holes on a construction site. In order to enable the column limbs to be tightly connected with the lacing bars, high-strength bolts can be adopted. The section steel and the concrete are combined, the bearing capacity and the rigidity of the section are greatly improved, the asymmetric design is adopted, the steel consumption can be reduced, and therefore the manufacturing cost is reduced, and the side column can be used for single-layer industrial factory building side columns. In addition, the concrete provides out-of-plane support for the profile steel plate, the profile steel plate provides constraint for the concrete, the concrete and the profile steel plate complement each other, and compared with a pure steel structure and a concrete structure, the fire resistance, the durability and the anti-seismic property are effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction, and particularly relates to a steel-concrete combined asymmetric lattice column. Background Art

[0002] For lattice columns in single-story steel structure factories, their bearing capacity is generally controlled by the stability of the steel structure, the strength of the steel cannot be fully utilized, and longitudinal support components are required to control the stability of the factory building frame columns outside the plane, resulting in serious material waste. For concrete structures, the construction process is complicated, the construction speed is slow, the cycle is long, and it is easily restricted by the site and weather. In steel structure factories equipped with large-tonnage cranes, the eccentric stable bearing capacity of the lattice columns is required to be higher. Therefore, a lattice column form with fast construction speed, simple installation method and high eccentric bearing capacity is urgently needed. Utility Model Content

[0003] In order to overcome the shortcomings of the above-mentioned traditional structural types, the purpose of the utility model is to provide a steel-steel concrete combined asymmetric lattice column that can reduce its own weight, so as to speed up the construction, greatly shorten the construction period and save materials.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a steel-concrete composite asymmetric lattice column, comprising: a channel steel 1, an I-shaped steel 2, a tie bar 3, a web connecting plate partition 4, concrete 5, a tie bar connecting plate 6, and a high-strength bolt 7; wherein the lattice column limbs are composed of the channel steel 1 and the I-shaped steel 2, the web of the I-shaped steel 2 is divided into three parts from left to right by the web connecting plate partition 4, and the left and right outer sides are covered with concrete 5, and the tie bar connecting plates 6 are welded at intervals on the web connecting plate partition 4 of the I-shaped steel 2; the plate surface of the tie bar connecting plate 6 is perpendicular to the I-shaped steel 2, and bolt holes are provided on the two flanges of the channel steel 1 according to the above-mentioned spacing; the tie bar 3 is connected between the upper and lower parts of the channel steel 1 and the I-shaped steel 2 by high-strength bolts 7, so that the channel steel 1, the I-shaped steel 2 and the tie bar 3 form a steel-concrete composite asymmetric lattice column.

[0005] There are two web connecting plates 6 on the left and right sides of the web of the I-beam 2 , which are spaced apart above and below the web connecting plates 6 . The spacing between the web connecting plates 6 on the left and right sides of the web of the I-beam 2 is the same as the spacing between the flanges of the channel steel 1 .

[0006] The tie bar 3 is made of angle steel and has bolt holes on both sides; the tie bar 3 is connected into a Z shape through the bolt holes and high-strength bolts 7 to connect the two column limbs.

[0007] The concrete 5 is ultra-high performance concrete.

[0008] Compared with the prior art, the beneficial effects of the utility model are:

[0009] The utility model makes improvements on the cross-sectional form of column limbs, adopts the form of a channel steel at one end and an I-steel coated with concrete at the other end, and the channel steel and the I-steel are combined by tie bars, the concrete provides out-of-plane support for the steel plate, and the steel plate provides constraint for the concrete, and the column limb on the side of the I-steel with a larger cross-sectional area can be used for the compression side of the factory building, so that the problem of eccentric stability of the lattice column is solved; at the same time, this cross-sectional form enables the material performance to be fully utilized, and each component can be prefabricated in the factory and assembled on site, with a fast construction speed, which greatly shortens the construction period.

[0010] The advantages of the utility model are embodied in:

[0011] 1. Save materials

[0012] In the utility model, the column limb I-beam serves as a channel for cast-in-place concrete, thereby enhancing the performance of the structure; under the constraint of concrete, the out-of-plane stability of the steel structure plate on the compression side is greatly improved, and the cross-section innovatively adopts a form of one end channel steel and the other end I-beam covered with concrete, making it suitable for the side columns of the crane plant, which are mainly subjected to eccentric compressive loads, and a short web I-beam is selected on the tension side to save steel; in addition, the steel can form a constraint on the concrete, thereby reducing the amount of concrete while improving the stress-bearing performance of the concrete.

[0013] 2. Convenient construction

[0014] The utility model is completely prefabricated in the factory, and all the production processes are completed in the factory. The products can be well maintained, and the mold has higher precision. The products can be produced synchronously and then assembled. Only high-strength bolts need to be used on site to assemble the prepared products, which improves the production speed of the products while ensuring the quality.

[0015] 3. Superior performance

[0016] The concrete part of the utility model is prefabricated and adopts high-performance concrete. The high-performance concrete increases the bearing capacity of the column limbs while further increasing the bonding with the steel sections, further reducing the dead weight and improving the performance.

[0017] 4. Flexible assembly

[0018] There are large gaps between the lattice column members of the utility model, which can be used as channels for the longitudinal pipeline layout, and the bolt holes are equidistantly arranged in advance at a certain interval on the tie bar connecting plate, so that the tie bars can be arranged in different quantities and forms according to different engineering requirements, thereby more reasonably reducing materials and enhancing performance.

[0019] In general, compared with the rigid lattice column, the steel-steel concrete composite lattice column has the characteristics of high bending stiffness, light weight, seismic performance, high material performance utilization and convenient construction. The column limb adopts the form of high-performance concrete wrapped with I-beam, which improves the bending bearing capacity and stiffness of the column. The column section adopts the form of channel steel at one end and I-beam wrapped with concrete at the other end, which improves the utilization rate of material performance and reduces the occupied space. Under the constraint of concrete, the out-of-plane stability of the steel structure plate on the compression side is greatly improved. The steel can form a constraint on the concrete, which improves the concrete stress performance while reducing the amount of concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the channel steel and I-shaped steel of the utility model;

[0022] Figure 3 It is a connection detail diagram of the utility model.

[0023] Explanation of reference numerals:

[0024] 1. Channel steel; 2. I-beam, 3. Tie bar, 4. Web connecting plate, 5. Concrete, 6. Tie bar connecting plate; 7. High-strength bolts.

[0025] The present invention is described in detail below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, a steel-concrete composite asymmetric lattice column comprises: a channel steel 1, an I-shaped steel 2, a tie bar 3, a web connecting plate partition 4, concrete 5, a tie bar connecting plate 6, and high-strength bolts 7; wherein the channel steel 1 and the I-shaped steel 2 form a lattice column limb, the web of the I-shaped steel 2 is divided into three parts from left to right by the web connecting plate partition 4, and the left and right outer sides are covered with concrete 5, and the tie bar connecting plates 6 are welded at intervals on the web connecting plate partition 4 of the I-shaped steel 2; the plate surface of the tie bar connecting plate 6 is perpendicular to the I-shaped steel 2, and bolt holes are provided on the two flanges of the channel steel 1 according to the above-mentioned spacing; the tie bar 3 is connected between the upper and lower parts of the channel steel 1 and the I-shaped steel 2 by high-strength bolts 7, so that the channel steel 1, the I-shaped steel 2 and the tie bar 3 form a steel-concrete composite asymmetric lattice column.

[0027] There are two web connecting plates 6 on the left and right sides of the web of the I-beam 2 , which are spaced apart above and below the web connecting plates 6 . The spacing between the web connecting plates 6 on the left and right sides of the web of the I-beam 2 is the same as the spacing between the flanges of the channel steel 1 .

[0028] The utility model embodiment uses a channel steel 1 at one end and an I-beam 2 at the other end to form a lattice column limb. The web of the I-beam 2 is coated with concrete on the left and right sides, and the channel steel 1 and the I-beam 2 are connected by tie bars 3. The concrete provides out-of-plane support for the steel plate, and the steel plate provides constraint for the concrete. The column limb on one side of the I-beam with a larger cross-sectional area can be used for the compression side of the factory building, so that the problem of eccentric stability of the lattice column is solved. At the same time, this cross-sectional form enables the material properties to be fully utilized. All components can be prefabricated in the factory and assembled on site, with a fast construction speed, which greatly shortens the construction period.

[0029] I-beam 2 is prefabricated in the factory, and all the production processes are completed in the factory. The product can be well maintained, and the mold has higher precision. The products can be produced simultaneously and then assembled. Only high-strength bolts are needed on site to assemble the finished products, which increases the production speed of the product while ensuring the quality.

[0030] Ultra-high performance concrete is used for concrete 5. High performance concrete not only increases the bearing capacity of the column but also further increases the bonding with the steel section, further reduces the deadweight and improves the performance.

[0031] The tie bar 3 is made of angle steel and has bolt holes on both sides; the tie bar 3 is connected into a Z shape through the bolt holes and high-strength bolts 7 to connect the two column limbs.

[0032] The column limbs are connected by tie bars. Bolt holes are preset on the flanges on both sides of the channel steel, the tie bar connecting plates and the tie bars. The preset bolt holes on the connecting plates are arranged equidistantly at a certain interval, which is convenient for assembling tie bars of different numbers and forms according to different engineering conditions. The assembly of the lattice column can be completed by high-strength bolts. The column cross section adopts an asymmetric form, which improves the utilization rate of material performance and reduces the use space. Under the constraint of concrete, the out-of-plane stability of the steel structure plate on the compressed side is greatly improved, thereby improving the utilization rate of materials and saving steel. In addition, the steel can form a constraint on the concrete. The two complement each other, so that the material of the utility model is fully utilized.

Claims

1. A steel-concrete composite asymmetric lattice column, characterized by comprising: Channel steel (1), I-shaped steel (2), tie bars (3), web connecting plate partition (4), concrete (5), tie bar connecting plate (6), and high-strength bolts (7); wherein the channel steel (1) and the I-shaped steel (2) form a lattice column limb, the web of the I-shaped steel (2) is divided into three parts from left to right by the web connecting plate partition (4), and the left and right outer sides are covered with concrete (5); tie bar connecting plates (6) are welded at intervals on the web connecting plate partition (4) of the I-shaped steel (2); the plate surface of the tie bar connecting plate (6) is perpendicular to the I-shaped steel (2), and bolt holes are provided at intervals on the two flanges of the channel steel (1); the tie bars (3) are connected between the upper and lower parts of the channel steel (1) and the I-shaped steel (2) by high-strength bolts (7), so that the channel steel (1), the I-shaped steel (2), and the tie bars (3) form a steel-concrete composite asymmetric lattice column.

2. The steel-concrete composite asymmetric lattice column according to claim 1, characterized in that: There are two web connecting plates (6) on the left and right sides of the web of the I-shaped steel (2), and they are spaced apart above and below the web connecting plates (6). The spacing between the web connecting plates (6) on the left and right sides of the web of the I-shaped steel (2) is the same as the spacing between the flanges of the channel steel (1).

3. The steel-concrete composite asymmetric lattice column according to claim 1, characterized in that: The tie bar (3) is made of angle steel and has bolt holes on both sides; the tie bar (3) is connected into a Z shape through the bolt holes and high-strength bolts (7) to connect the two column limbs.

4. The steel-concrete composite asymmetric lattice column according to claim 1, characterized in that: The concrete (5) is ultra-high performance concrete.

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