Structural modification based on the removal and alteration of side columns at the side span of the steel structure platform.

Abstract

This utility model relates to the field of structural modification of buildings, and discloses a modification structure based on the removal of side columns at the side span of a steel structure platform. The structure includes a side steel column to be demolished, a new steel column, a new crossbeam, a first diagonal brace, a second diagonal brace, and multiple tie rods. The new steel column is positioned opposite the side steel column to be demolished, with its bottom fixed to the ground and its top extending to the platform layer above the side steel column to be demolished. The new steel column is fixedly connected to each platform layer via a new crossbeam. A first diagonal brace is installed between the existing side steel column on the layer above the side steel column to be demolished and the two new crossbeams of the new steel column. Two second diagonal braces in a figure-eight shape are also installed on the right side of the existing side steel column connected to the first diagonal brace and between it and the adjacent existing steel column. Multiple tie rods are installed between the new steel column and the existing side steel columns between each platform layer. This utility model's modification method is simple to construct, does not affect normal production, and does not require complex stress analysis.

Description

Technical Field

[0001] This utility model relates to the field of structural modification of buildings, and in particular to a modification structure based on the removal of side columns at the side span of a steel structure platform, which is applicable to the modification of steel platforms in factories, warehouses, etc. Background Technology

[0002] Steel structure platforms are typically composed of beams, columns, slabs, and other components made of shaped steel and steel plates, as shown in the attached diagram. Figure 1 As shown, the various parts are connected by welds, screws, or rivets. They are commonly used for equipment support and material storage. For example, large equipment in machinery manufacturing workshops is mounted on steel structure platforms to ensure stable operation; chemical companies utilize steel structure platforms for material transfer and storage to meet production process requirements.

[0003] Existing steel structure platforms often experience interference from equipment installation at the edge spans (edges) during actual use, necessitating modifications. The following modification schemes are currently being adopted:

[0004] 1. Demolish and rebuild the side span (e.g., attach...). Figure 1 (As shown) All equipment on the left side of the dashed box is removed. This solution not only affects workshop production, but also requires the removal of corresponding equipment on the steel platform. If the equipment is large, it requires the joint participation of multiple disciplines in the modification design.

[0005] 2. As attached Figure 2 As shown, a new inclined column A is set up. Generally, the inclination angle of the inclined column is controlled within 10° (1:6). This plan requires consideration of removing one or even two layers of side columns. Specifically: if the upper node of the inclined column coincides with the beam-column node of the second-floor platform, and the angle is controlled within 10°, the equipment can still be arranged. In this case, only one layer of columns needs to be removed, as shown in the attached diagram. Figure 2 As shown in (a), this is only suitable for minor adjustments to the equipment space; more often, it requires the removal of columns on the first and second floors (in some cases), as shown in the attached diagram. Figure 2 As shown in (b), more space can be provided when the angle is controlled within 10°. In this case, whether or not to remove the second-floor columns depends on two scenarios. The first scenario is not removing the second-floor columns (including some), in which case the second-floor columns change from compression-bending members to tension-bending members (because the first-floor columns are removed), and the side-span platform is in a suspended state. The second scenario is removing the second-floor columns (including some), in which case the platform beams below the beam-column joint of the inclined column and the upper platform need to be extended to the inclined column. This modification scheme requires complex stress analysis of the joints using software, followed by reinforcement of the corresponding beams based on the analysis results. Therefore, this scheme is relatively complex and unsuitable for situations where the platform beam height is limited.

[0006] Based on this, this application provides a structural modification method based on the removal of side columns at the side span of a steel structure platform, which does not affect the normal production of the factory and does not require complex stress analysis of the nodes during the modification process, in order to solve the above problems. Utility Model Content

[0007] This invention aims to solve the technical problems existing in the prior art. Therefore, this invention provides a modification structure based on the removal of side columns at the side span of a steel structure platform, which does not affect normal factory production and does not require complex stress analysis of nodes during the modification process.

[0008] The technical solution adopted by this utility model to solve its technical problem is:

[0009] A structural modification method based on the removal of side columns at the side span of a steel structure platform is provided, including the side steel column to be demolished, a newly added steel column, a newly added crossbeam, a first diagonal brace, a second diagonal brace, and multiple diagonal tie rods. The newly added steel column is positioned opposite the side steel column to be demolished, with its bottom fixed to the ground and its top extending to the platform layer above the side steel column to be demolished. The newly added steel column is fixedly connected to each platform layer via the newly added crossbeam. A first diagonal brace is installed between the existing side steel column on the layer above the side steel column to be demolished and the two newly added crossbeams of the newly added steel column. Two second diagonal braces in a figure-eight shape are also installed on the right side of the existing side steel column connected to the first diagonal brace and between it and the adjacent existing steel column. Multiple diagonal tie rods are installed between the newly added steel column and the existing side steel columns between each platform layer.

[0010] In some alternative implementations, the distance between the newly added steel column and the side steel column to be demolished satisfies the inclination angle of the first diagonal web member being 35° to 55°.

[0011] In some alternative embodiments, multiple tie rods are provided on the same side of the newly added steel column or staggered on both sides of the newly added steel column.

[0012] In some alternative implementations, the newly added steel columns, newly added beams, first diagonal web members, second diagonal web members, and diagonal tie rods are all made of H-beams.

[0013] In some alternative embodiments, the ends of the first diagonal web member, the second diagonal web member, and the diagonal tie rod are all welded and fixed.

[0014] In some alternative embodiments, multiple reinforcing ribs are welded onto the steel columns or beams connected to the first diagonal web member, the second diagonal web member, and the tie rod.

[0015] In some alternative embodiments, the newly added steel column is provided with two support plates, the distance between the two support plates being equal to the beam height of the newly added crossbeam, which is used to support the newly added crossbeam for easy welding.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention replaces the steel columns to be demolished with a truss structure composed of new steel columns, new beams, a first diagonal brace, and diagonal tie rods to support the platform, ensuring the structural reliability of the steel platform. This modification method is not only simple to construct and does not affect the normal production of the factory, but also does not require complex stress analysis. Furthermore, the design of the second diagonal brace distributes the stress to the existing steel components, further ensuring the safety of the structure. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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, wherein:

[0019] Figure 1 This is a structural diagram of the steel platform provided by this utility model;

[0020] Figure 2 This is a schematic diagram of the side column removal and modification of the steel platform using inclined columns provided by this utility model;

[0021] Figure 3 This is a perspective view of the first embodiment of the present invention, which is based on the modification of the side column at the side span of the steel structure platform by removing the side column.

[0022] Figure 4 yes Figure 3 Provided front view;

[0023] Figure 5 This is a diagram showing the connection nodes of the newly added steel column, the newly added crossbeam, and the first diagonal web member provided by this utility model.

[0024] Figure 6 yes Figure 4 The diagram shows the connection node of the second diagonal web member at point C.

[0025] Figure 7 This is a perspective view of the second embodiment of the present invention, which is based on the modification of the side column removal structure at the side span of the steel structure platform.

[0026] Figure 8 yes Figure 7 The provided front view.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1—Steel column to be demolished, 2—New steel column, 2.1—Support plate, 3—New crossbeam, 4—First diagonal brace, 5—Second diagonal brace, 6—Diagonal tie rod, 7—Reinforcing rib plate, A—Diagonal column. Detailed Implementation

[0029] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0030] 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 described embodiments 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 this utility model.

[0032] Furthermore, the terms "first," "second," etc., used in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. The terms "installed," "connected," and "joined" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] Example 1

[0035] As attached Figure 3 and attached Figure 4 As shown or attached Figure 7 and attached Figure 8 As shown, this embodiment provides a structural modification based on the removal of side columns at the side span of a steel structure platform, including the side steel column to be demolished 1, a newly added steel column 2, a newly added crossbeam 3, a first diagonal web member 4, a second diagonal web member 5, and multiple diagonal tie rods 6, wherein:

[0036] The newly added steel column 2 is positioned opposite the outer side of the steel column 1 to be demolished, with its bottom fixed to the ground and its top extending to the platform layer above the steel column 1. The newly added steel column 2 is fixedly connected to each platform layer via the newly added crossbeam 3. A first diagonal brace 4 is provided between the existing steel column on the layer above the steel column 1 and the two newly added crossbeams 3 of the newly added steel column 2. Preferably, the inclination angle of the first diagonal brace 4 is 35° to 55°, therefore the distance L between the newly added steel column 2 and the steel column 1 to be demolished should meet the inclination angle requirement of the first diagonal brace 4. Multiple diagonal tie rods 6 are provided between the newly added steel column 2 and the existing steel column between each platform layer to strengthen the overturning resistance of the newly added steel column 2. In one embodiment, multiple diagonal tie rods 6 are provided on the same side of the newly added steel column 2, or on the back side of the newly added steel column, as shown in the attached figure. Figure 3 As shown, the tie rods can also be placed on the front of the newly added steel column, depending on the spatial layout. In another embodiment, multiple diagonal tie rods 6 are arranged alternately on both sides of the newly added steel column 2, i.e., the upper layer is placed on the back and the lower layer is placed on the front. Furthermore, on the right side of the existing side steel column connected to the first diagonal tie rod 4, two second diagonal tie rods 6 in a figure-eight shape are also provided between it and the adjacent existing steel column to distribute the force to the existing steel components, further ensuring the safety of the structure.

[0037] This embodiment replaces the steel columns to be demolished with a truss structure composed of new steel columns, new beams, a first diagonal brace, and diagonal tie rods to support the platform, ensuring the structural reliability of the steel platform. This modification method is not only simple to construct and does not affect the normal production of the factory, but also does not require complex stress analysis. The design of the second diagonal brace can distribute the stress to the existing steel components, further ensuring the safety of the structure.

[0038] Preferably, in this embodiment, the newly added steel column 2, the newly added crossbeam 3, the first diagonal web member 4, the second diagonal web member 5, and the diagonal tie rod are all made of H-beams.

[0039] Preferred options are listed below. Figure 5 and attached Figure 6 As shown, the two ends of the first diagonal web member 4, the second diagonal web member 5, and the diagonal tie rod 6 are all welded and fixed.

[0040] Preferably, multiple reinforcing ribs 7 are welded onto the steel columns or beams connected to the first diagonal web member 4, the second diagonal web member 5, and the tie rod 3 to increase the structural strength of the connection nodes.

[0041] Preferred options are listed below. Figure 5 As shown, the newly added steel column 2 is equipped with two support plates 2.1, and the distance between the two support plates 2.1 is equal to the beam height of the newly added crossbeam 3, which is used to support the newly added crossbeam for easy welding. In specific implementation, one end of the newly added crossbeam is set between the support plates of the newly added steel column, and the other end is set between the flange plates of the existing longitudinal beam, and then welding is performed.

[0042] During the specific renovation, when the steel column to be demolished is an attachment Figure 3 When installing the bottommost edge steel column, after connecting the new steel column, new beam, first diagonal web member, second diagonal web member, and multiple diagonal tie rods according to the above scheme, the edge steel column to be removed can be dismantled.

[0043] The contemporary removal of the edge steel column is an attachment Figure 7 When adding edge steel columns above the second floor, similarly, after connecting the new steel columns, new beams, first diagonal web members, second diagonal web members, and multiple diagonal tie rods to the positions as described above, the edge steel columns to be removed can be dismantled.

[0044] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A structural modification method based on the removal and relocation of side columns at the side span of a steel structure platform, characterized in that: This includes the steel columns to be demolished, newly added steel columns, newly added beams, the first diagonal web member, the second diagonal web member, and multiple diagonal tie rods, among which: The newly added steel column is located opposite the steel column to be demolished on the outside, with its bottom fixed to the ground and its top extending to the platform layer above the steel column to be demolished. The newly added steel columns are fixedly connected to each platform layer through the newly added crossbeams. A first diagonal brace is installed between the existing edge steel column located one level above the edge steel column to be demolished and the two newly added crossbeams of the newly added steel column; On the right side of the existing side steel column connected to the first diagonal web member, there are two second diagonal web members in a figure-eight shape between it and the adjacent existing steel column; Multiple of the aforementioned diagonal tie rods are installed between the newly added steel columns and the existing edge steel columns between each platform level.

2. The structure based on the removal and modification of the side column at the side span of the steel structure platform according to claim 1, characterized in that: The distance between the newly added steel column and the side steel column to be demolished satisfies the requirement that the inclination angle of the first diagonal web member is 35°~55°.

3. The structure based on the removal and modification of the side column at the side span of the steel structure platform according to claim 1, characterized in that: Multiple tie rods are installed on the same side of the newly added steel column or staggered on both sides of the newly added steel column.

4. The structure based on the removal and modification of the side column at the side span of the steel structure platform according to claim 1, characterized in that: The newly added steel columns, new crossbeams, first diagonal web members, second diagonal web members, and tie rods are all made of H-beams.

5. The structure based on the removal and modification of the side column at the side span of the steel structure platform according to claim 1, characterized in that: Both ends of the first diagonal web member, the second diagonal web member, and the diagonal tie rod are welded and fixed.

6. The structure based on the removal and modification of the side column at the side span of the steel structure platform according to claim 1, characterized in that: Multiple reinforcing ribs are welded onto the steel columns or beams connected to the first diagonal web member, the second diagonal web member, and the diagonal tie rod.

7. The structure based on the removal and modification of the side column at the side span of the steel structure platform according to claim 1, characterized in that: The newly added steel column is equipped with two support plates, the distance between which is equal to the height of the newly added crossbeam, which is used to support the newly added crossbeam for easy welding.

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