A variable stiffness steel lattice column

Abstract

This utility model relates to the field of building support structure technology, specifically to a variable stiffness steel lattice column. The column body of this design consists of multiple splicing groups and multiple angle steel bodies. Each splicing group includes large and small angle steels, which are connected by splicing and reinforcing steel plates and arranged sequentially on multiple angle steel bodies, realizing a variable stiffness design according to the vertical load distribution. The first support layer, the second support layer, and the third support layer correspond to the first layer of steel support, the second layer of steel support, and the bottom layer of steel support, respectively. First, second, and third fasteners are set between and below these support layers to further enhance the structural stability. This design not only makes full use of the steel bearing capacity and reduces the self-weight of the steel column, facilitating on-site hoisting construction, but also reduces the safety risks during hoisting. At the same time, the standardized factory production of each section also ensures the welding quality of the materials.

Description

Technical Field

[0001] This utility model relates to the field of building support structure technology, and in particular to a variable stiffness steel lattice column. Background Technology

[0002] In construction engineering, multi-beam support systems are widely used. In traditional multi-beam support systems, steel lattice columns serve as crucial supporting components, bearing vertical loads. Using steel lattice columns with the same cross-section and stiffness can, to a certain extent, meet the overall structural stability requirements. This design method is relatively simple to construct, with mature construction techniques, making it easy for construction personnel to grasp the key points. This ensures that the support system achieves its design functions within a short period, providing a relatively stable working environment for foundation construction and other aspects of the building project. Furthermore, using steel lattice columns with the same cross-section and stiffness facilitates material procurement and management; only one specification of angle steel or similar materials needs to be purchased, which is beneficial for bulk material supply and inventory management.

[0003] However, in a multi-beam support system, the vertical load on the steel lattice columns increases layer by layer from the first floor to the bottom floor support beams. When the same cross-section and stiffness are used, the self-weight of the first-floor support beam is much less than the bearing capacity of the steel column. This results in a large margin of error in the stress on the upper half of the steel column's lattice angle steel. At the same time, the steel lattice columns themselves are heavy, which increases the overall self-weight of the structure. On the other hand, it seriously affects the selection of subsequent construction hoisting machinery, requiring the use of larger tonnage hoisting machinery. Moreover, due to their heavy weight, there are also greater safety risks during hoisting. Utility Model Content

[0004] The purpose of this utility model is to provide a variable stiffness steel lattice column, aiming to solve the technical problems in the existing multi-support beam support system where the vertical load of the steel lattice column increases layer by layer from the first floor to the bottom floor support beams. When the same cross-section and stiffness are used, the self-weight of the first-floor support beam is much less than the bearing capacity of the steel column, which results in a large margin of error in the stress on the upper half of the lattice angle steel of the steel column. At the same time, the steel lattice column itself is heavy, which increases the overall self-weight of the structure and seriously affects the selection of subsequent construction hoisting machinery, requiring the use of larger tonnage hoisting machinery. Moreover, due to its heavy weight, there are also greater safety risks during hoisting.

[0005] To achieve the above objectives, this utility model employs a variable stiffness steel lattice column, comprising a first support layer, a second support layer, a third support layer, and a column body. Multiple sets of splicing groups and multiple angle steel bodies are arranged on the outer side of the column body. Each splicing group includes multiple splicing reinforcing angle steels, which are connected by splicing reinforcing steel plates. The multiple splicing groups are respectively fixedly connected to corresponding angle steel bodies and arranged sequentially on the multiple angle steel bodies. The first support layer is disposed on the column body, and the second and third support layers are respectively disposed on the corresponding splicing groups.

[0006] The first support layer is the first layer of steel support, the second support layer is the second layer of steel support, and the third support layer is the bottom layer of steel support.

[0007] The column body is provided with a first firmware, a second firmware and a third firmware.

[0008] The first firmware is located between the first support layer and the second support layer, the second firmware is located between the second support layer and the third support layer, and the third firmware is located below the third support layer.

[0009] The first firmware consists of three splice plates, the second firmware consists of two splice plates, and the third firmware consists of two splice plates.

[0010] Each splicing group consists of large-size angle steel and small-size angle steel.

[0011] This utility model discloses a variable stiffness steel lattice column. The outer side of the column body is composed of multiple splicing groups and multiple angle steel bodies. Each splicing group includes large and small angle steels, which are connected by splicing and reinforcing steel plates and arranged sequentially on multiple angle steel bodies, realizing a variable stiffness design according to the vertical load distribution. The first support layer, the second support layer, and the third support layer correspond to the first layer of steel support, the second layer of steel support, and the bottom layer of steel support, respectively. First, second, and third fasteners are provided between and below these support layers to further enhance the structural stability. This design not only makes full use of the steel bearing capacity and reduces the self-weight of the steel column, facilitating on-site hoisting and construction, but also reduces the safety risks during hoisting. At the same time, the standardized factory production of each section also ensures the welding quality of the materials. Attached Figure Description

[0012] 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 or the prior art will be briefly introduced 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.

[0013] Figure 1 This is a structural schematic diagram of the variable stiffness steel lattice column of this utility model.

[0014] Figure 2 This is a partial enlarged view of point A in the variable stiffness steel lattice column of this utility model.

[0015] 1-First support layer, 2-Second support layer, 3-Third support layer, 4-Column body, 5-Angle steel body, 6-Spliced ​​reinforcing angle steel, 7-Spliced ​​reinforcing steel plate, 8-First fastener, 9-Second fastener, 10-Third fastener, 11-Large size angle steel, 12-Small size angle steel, 13-Splicing assembly. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0017] Please see Figures 1 to 2 This utility model provides a variable stiffness steel lattice column, including a first support layer 1, a second support layer 2, a third support layer 3, and a column body 4. The outer side of the column body 4 is provided with multiple sets of splicing groups 13 and multiple angle steel bodies 5. Each set of splicing groups 13 includes multiple splicing reinforcing angle steels 6, and the multiple splicing reinforcing angle steels 6 are connected by splicing reinforcing steel plates 7. The multiple sets of splicing groups 13 are respectively fixedly connected to the corresponding angle steel bodies 5 and are arranged sequentially on the multiple angle steel bodies 5. The first support layer 1 is provided on the column body 4, and the second support layer 2 and the third support layer 3 are respectively provided on the corresponding splicing groups 13.

[0018] In this embodiment, the segmented splicing group 13 achieves a gradient change in the vertical stiffness of the steel lattice column, enabling the column body 4 to dynamically adjust its bearing capacity according to the load distribution between the first and bottom support beams. This design not only solves the problem of excessive stress on the first floor and waste of steel on the upper floor in traditional uniform cross-section columns, but also reduces the difficulty of on-site welding and improves material utilization through the standardized splicing group 13, thereby effectively controlling project costs.

[0019] Furthermore, the first support layer 1 is the first layer of steel support, the second support layer 2 is the second layer of steel support, and the third support layer 3 is the bottom layer of steel support.

[0020] In this embodiment, this layered structure avoids the risk of deformation of the bottom support beam due to insufficient column stiffness, while reducing material waste caused by excessive column stiffness in the first-layer support beam, thus improving the economy and safety of the overall support system.

[0021] Furthermore, the column body 4 is provided with a first firmware 8, a second firmware 9 and a third firmware 10.

[0022] In this embodiment, the first firmware 8, the second firmware 9, and the third firmware 10 are used as lateral connecting parts to effectively limit the displacement at the splicing points of different types of angle steel, prevent local instability caused by sudden load changes, and enhance the deformation resistance of the column during hoisting and construction, thus ensuring structural safety.

[0023] Furthermore, the first firmware 8 is located between the first support layer 1 and the second support layer 2, the second firmware 9 is located between the second support layer 2 and the third support layer 3, and the third firmware 10 is located below the third support layer 3.

[0024] Furthermore, the first firmware 8 has three sprues, the second firmware 9 has two sprues, and the third firmware 10 has two sprues.

[0025] In this embodiment, the first firmware 8 uses three connecting plates to strengthen the connection stiffness of the high load area of ​​the first floor; the second firmware 9 and the third firmware 10 reduce the number of connecting plates, which reduces the self-weight while meeting the load-bearing requirements of the middle and lower floors; this design further reduces the amount of materials used and construction costs while ensuring safety.

[0026] Furthermore, each splicing group 13 consists of a large-size angle steel 11 and a small-size angle steel 12.

[0027] In this embodiment, by using splicing groups 13 composed of angle steels of different sizes 12, the steel lattice column achieves the variable stiffness characteristic of "flexible at the top and rigid at the bottom". The large angle steels 11 are concentrated at the bottom layer to directly resist larger vertical loads. The small angle steels 12 are used in the upper layer to avoid excessive material redundancy. This configuration not only reduces the total weight of the column (facilitating the selection of hoisting machinery), but also improves welding quality and construction efficiency through the factory prefabrication of standardized angle steels.

[0028] In this utility model, based on the vertical load distribution data of each layer of support beams in the multi-support beam support system, the model and combination method of the large-size angle steel 11 and small-size angle steel 12 required for each splicing group 13 in the column body 4 are determined; then, the splicing reinforcing angle steel 6 is welded together through the splicing reinforcing steel plate 7 to form a standardized splicing group 13 unit; then, multiple splicing group 13 units are arranged and fixed sequentially on the corresponding angle steel body 5 to construct the column body 4 with variable stiffness characteristics; then, the first support layer 1 (first layer support), the second support layer 2 (second layer support), and the third support layer 3 (bottom layer support) are precisely installed on the pre-supported parts of the column body 4. At a set elevation, the first fastener 8 (three connecting plates) is installed between the first support layer 1 and the second support layer 2, the second fastener 9 (two connecting plates) is installed between the second support layer 2 and the third support layer 3, and the third fastener 10 (two connecting plates) is installed below the third support layer 3. The overall stability is enhanced by lateral constraints. Finally, the assembled variable stiffness steel lattice column is hoisted to the designated position. Its self-weight optimization design (small angle steel 12 on the upper layer and large angle steel 11 on the lower layer) significantly reduces the tonnage requirements of hoisting machinery. At the same time, the standardized production process ensures welding quality and effectively avoids the problems of material waste, high hoisting risk and high construction cost that exist in traditional constant cross-section columns.

[0029] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A variable stiffness steel lattice column, characterized in that, The support includes a first support layer, a second support layer, a third support layer, and a column body. The outer side of the column body is provided with multiple sets of splicing groups and multiple angle steel bodies. Each set of splicing groups includes multiple splicing reinforcing angle steels, and the multiple splicing reinforcing angle steels are connected by splicing reinforcing steel plates. The multiple sets of splicing groups are respectively fixedly connected to the corresponding angle steel bodies and are arranged sequentially on the multiple angle steel bodies. The first support layer is provided on the column body, and the second support layer and the third support layer are respectively provided on the corresponding splicing groups.

2. The variable stiffness steel lattice column as described in claim 1, characterized in that, The first support layer is the first layer of steel support, the second support layer is the second layer of steel support, and the third support layer is the bottom layer of steel support.

3. The variable stiffness steel lattice column as described in claim 2, characterized in that, The column body is equipped with a first firmware, a second firmware, and a third firmware.

4. The variable stiffness steel lattice column as described in claim 3, characterized in that, The first firmware is located between the first support layer and the second support layer, the second firmware is located between the second support layer and the third support layer, and the third firmware is located below the third support layer.

5. The variable stiffness steel lattice column as described in claim 4, characterized in that, The first firmware has three splice plates, the second firmware has two splice plates, and the third firmware has two splice plates.

6. The variable stiffness steel lattice column as described in claim 5, characterized in that, Each set of splicing components consists of large-size angle steel and small-size angle steel.

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