Method for increasing height of steel structure building

Abstract

This invention discloses a method for raising the height of a steel structure building, comprising the following steps: S1, confirming the cut-off position: confirming the cut-off position at the bottom of the H-shaped steel column; S2, cutting sequentially; S3, setting up a lifting mechanism: setting up a lifting mechanism on one side of the H-shaped steel column, so that the lifting mechanism supports the H-shaped steel column above the cut-off position; S4, lifting: all lifting mechanisms lift together, raising the steel structure building to the set height; the following support mechanism adjusts its support height as the H-shaped steel column increases in height, so that the H-shaped steel column above the cut-off position remains supported on the following support mechanism during the raising process; S5, fixing the connection: fixing the H-shaped steel column above the cut-off position to the raising sleeve, and fixing the connection at the cut-off position of the middle plate; S6, dismantling: dismantling the following support mechanism and the lifting mechanism. This method for raising the height of a steel structure building improves stability, safety, and the consistency of the overall raising, and is convenient and efficient in construction.

Description

Technical Field

[0001] This invention relates to the field of steel structure building construction technology, specifically to a method for increasing the height of a steel structure building. Background Technology

[0002] Steel structure buildings are widely used in various industrial plants, high-rise commercial buildings, and large-scale warehousing facilities due to their significant advantages such as light weight, high strength, and fast construction speed. Among them, H-shaped steel columns, as key components of the vertical load-bearing system of steel structure buildings, play an important supporting role in the stability of the overall structure.

[0003] In real-world engineering scenarios, steel structure buildings are situated in complex and diverse geological conditions. Factors such as uneven soil distribution, fluctuating groundwater levels, significant variations in internal live loads, and disturbances from adjacent construction inevitably lead to uneven settlement. Consequently, adjustments to the length of the H-beam steel columns are necessary to ensure structural balance at the top of the building. Furthermore, situations may arise where increased usage necessitates raising the height of the H-beam steel columns to increase the overall height of the building.

[0004] Chinese patent application No. 202411040148.8 discloses a method for adjusting the elevation and verticality of a large steel structure column. The method includes: providing at least two lifting clamps, each with a slot on one side; measuring the elevation and verticality of the steel structure column using a measuring instrument, and calculating the number of shims to be added or subtracted based on the measurement data; evenly clamping the at least two lifting clamps onto the edge of the upper connecting plate of the base of the steel structure column through the slots; placing a pad and a jack on the ground below each lifting clamp, with the jack resting on the pad and its rod resting on the lower surface of the lifting clamp; using the jack to lift the steel structure column through the lifting clamps, and adding or subtracting shims below the steel structure column to adjust its elevation and verticality. This method for adjusting the elevation and verticality of a large steel structure column has the following shortcomings: 1) First, connect the top of the jack to the bottom of the steel structure column using the lifting clamp. Then, cut the bottom of the steel structure column from one side to the other. On the one hand, during the cutting process, the change in the cutting position of the bottom of the steel structure column from one side to the other causes uneven force on the jacks below the steel structure column. This not only easily causes the steel structure column to tilt, which may lead to the building supported by the steel structure column tilting or collapsing, resulting in poor safety, but also easily damages the jacks. On the other hand, the jack occupies the space on the outside of the steel structure column, making the cutting operation inconvenient and affecting construction efficiency. 2) After the cut, the jacks work together to lift the structure. However, the lifting process of each jack is difficult to be consistent, which can easily cause the building supported by the steel structure column to tilt or collapse, resulting in poor safety. 3) Using shims to raise the height is unreasonable, as it not only results in poor stability and safety, but also makes construction inconvenient and inefficient. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a method for raising the height of steel structure buildings that improves stability, safety and overall height consistency, and is convenient and efficient to construct.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A method for increasing the height of a steel structure building includes the following steps: S1. Confirm the cut-off position: Confirm the cut-off position at the bottom of the H-beam column; S2. Sequential Cutting: First, cut the flanges on both sides of the H-beam column at the cut-off position. After cutting the flanges, install the heightening sleeve on the flanges, so that the heightening sleeve is fixedly connected to the H-beam column below the cut-off position and slidably connected to the H-beam column above the cut-off position. A following support mechanism is set between the H-beam column above the cut-off position and the heightening sleeve. Then, cut the middle plate of the H-beam column located between the flanges on both sides at the cut-off position. S3. Install a lifting mechanism: Install a lifting mechanism on one side of the H-shaped steel column so that the lifting mechanism supports the H-shaped steel column above the cut-off position; S4. Lifting: All lifting mechanisms work together to lift the steel structure building to the set height; the following support mechanism adjusts the support height as the H-beam steel column increases in height, so that the H-beam steel column above the cut-off position remains supported on the following support mechanism during the height increase process; S5. Fixed connection: Fix the H-shaped steel column and the heightening sleeve above the cut-off position, and fix the middle plate at the cut-off position. S6. Dismantle: Dismantle the supporting mechanism and the lifting mechanism.

[0007] As a further improvement to the above technical solution: In step S2, the following support mechanism includes a synchronous motor, a screw, and a nut seat. The synchronous motor and the nut seat are respectively located on the H-shaped steel column above the cut-off position and the heightening sleeve. The screw is fixedly connected to the conveying shaft of the synchronous motor and threadedly connected to the nut seat. In step S4, the synchronous motor drives the screw to rotate according to the height increase signal of the H-shaped steel column above the cut-off position, so that the length of the screw between the synchronous motor and the nut seat increases synchronously with the height of the H-shaped steel column above the cut-off position.

[0008] It also includes step S0, which is set before S1, height confirmation and baseline marking: confirming the height of the H-shaped steel column of the steel structure building, and setting up a height detection mechanism on one side of the H-shaped steel column to detect the height of the H-shaped steel column above the cut-off position in real time and generate a height increase signal of the H-shaped steel column above the cut-off position.

[0009] In S0, the starting point baseline and the ending point baseline of the jacking are marked on the lower part of the H-shaped steel column according to the height increase, so that the height detection mechanism corresponds to the height of the starting point baseline.

[0010] In S0, a termination signal generating component is provided on the jacking endpoint baseline to issue a jacking termination signal when the jacking endpoint baseline corresponds to the height of the height detection mechanism.

[0011] The termination signal generating component, height detection mechanism, synchronous motor, and lifting mechanism are all connected to the control center via signal transmission.

[0012] In step S4, the control center uses the detection signals from the height detection mechanisms corresponding to each H-beam column to cause the lifting mechanisms to lift together, ensuring that the maximum height difference between the H-beam columns above each cut-off position is within a set range.

[0013] In step S4, when the baseline of the lifting endpoint corresponds to the height of the height detection mechanism, the control center receives the termination signal from the termination signal generator, causing the corresponding lifting mechanism to stop.

[0014] In step S1, a lifting support is provided above the cut-off position of the H-shaped steel column. In step S3, the lifting mechanism is supported on the lifting support.

[0015] The lifting mechanism includes jacks.

[0016] Compared with the prior art, the advantages of the present invention are as follows: The steel structure building heightening method of the present invention first cuts off one side wing plate of the H-shaped steel column at the cut-off position, then cuts off the other side wing plate, and then cuts off the middle plate. Before cutting off the middle plate, heightening sleeves are installed on each wing plate, so that the heightening sleeves are fixedly connected to the H-shaped steel column below the cut-off position and slidably sleeved with the H-shaped steel column above the cut-off position. Furthermore, a lifting mechanism is installed after complete cutting to lift and increase the height. Firstly, the cutting method of cutting from both sides to the middle, and the installation of heightening sleeves after cutting off the wing plates (limiting the horizontal displacement of the H-shaped steel column above the cut-off position, but not limiting the height of the H-shaped steel column above the cut-off position), improves the stability of the cutting process and prevents the risk of tilting caused by the final cut point being on one side. This design offers several advantages. First, it helps prevent the risk of tilting or collapsing of buildings supported by steel columns, ensuring high safety. Second, cutting the steel column before installing the jacking mechanism prevents damage to the jacking mechanism during the cutting process. Third, the use of heightening guides during jacking improves the consistency of the overall rise. Fourth, the following support mechanism adjusts its support height as the H-shaped steel column rises, ensuring that the H-shaped steel column above the cut-off position remains supported by the following support mechanism during the rise. This means that even if the jacking mechanism suddenly fails, the following support mechanism will still support the H-shaped steel column above the cut-off position, improving overall stability and safety. Furthermore, it avoids the need for shims for jacking, making construction convenient and efficient. Attached Figure Description

[0017] Figure 1 This is a flowchart of the method for increasing the height of steel structure buildings according to the present invention.

[0018] Figure 2 This is a schematic diagram of the steel structure building according to the steel structure building heightening method of the present invention.

[0019] Figure 3 This is a structural schematic diagram of the steel structure building heightening method of the present invention, which marks the starting baseline and the ending baseline of the jacking on the H-shaped steel column.

[0020] Figure 4 This is a structural schematic diagram of the confirmed cut-off position in the steel structure building heightening method of the present invention.

[0021] Figure 5 This is a schematic diagram of the cut-off side wing plate in the steel structure building heightening method of the present invention.

[0022] Figure 6 This is a schematic diagram of the structure of the steel structure building heightening method of the present invention, which involves installing a heightening sleeve and a following support mechanism on one side wing plate.

[0023] Figure 7 This is a schematic diagram of the structure when the height-increasing sleeve position is adjusted in the steel structure building height-increasing method of the present invention.

[0024] Figure 8 yes Figure 7 A magnified structural diagram of point A in the middle.

[0025] Figure 9 This is a schematic diagram of the structure of cutting off the other side wing plate in the method for raising the height of steel structure buildings according to the present invention.

[0026] Figure 10 This is a schematic diagram of the structure of the steel structure building heightening method of the present invention, which involves installing a heightening sleeve and a following support mechanism on the other side wing plate.

[0027] Figure 11 This is a schematic diagram of the cut-out middle plate in the steel structure building heightening method of the present invention.

[0028] Figure 12 This is a schematic diagram of the installation and lifting mechanism of the steel structure building heightening method of the present invention.

[0029] Figure 13 This is a schematic diagram of the lifting mechanism for lifting H-shaped steel columns in the steel structure building heightening method of the present invention.

[0030] Figure 14 This is a schematic diagram of the break opening on the plate in the fixed connection of the steel structure building heightening method of the present invention.

[0031] Figure 15 This is a schematic diagram of the structure after the removal of the supporting mechanism and the lifting mechanism in the steel structure building heightening method of the present invention.

[0032] The labels in the diagram represent: 1. H-beam steel column; 11. Wing plate; 12. Middle plate; 13. Lifting support; 2. Cut-off position; 3. Heightening sleeve; 4. Following support mechanism; 41. Synchronous motor; 42. Screw; 43. Nut seat; 5. Lifting mechanism; 6. Height detection mechanism; 7. Lifting end baseline; 71. Termination signal generator; 8. Lifting starting baseline; 9. Control center. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "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 invention 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 invention.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] Figures 1 to 15 This invention illustrates an embodiment of a method for increasing the height of a steel structure building. The method for increasing the height of a steel structure building according to this embodiment includes the following steps: S1. Confirm cut-off position 2: Confirm the cut-off position 2 at the bottom of H-beam column 1, such as... Figure 4 As shown; S2. Sequential Cutting: First, sequentially cut the wing plates 11 on both sides of the H-beam column 1 at the cut-off position 2. After cutting the wing plates 11, install the heightening sleeve 3 on the wing plates 11, so that the heightening sleeve 3 is fixedly connected to the H-beam column 1 below the cut-off position 2 and slidably connected to the H-beam column 1 above the cut-off position 2. A following support mechanism 4 is set between the H-beam column 1 above the cut-off position 2 and the heightening sleeve 3. Figures 5 to 10 As shown; then, cut the middle plate 12 of the H-beam column 1 at the cut-off position 2, which is located between the two side flanges 11, as shown. Figure 11 As shown; S3. Install lifting mechanism 5: Install lifting mechanism 5 on one side of H-beam column 1, so that lifting mechanism 5 supports the H-beam column 1 above the cut-off position 2, such as... Figure 12 As shown; S4. Lifting: All lifting mechanisms 5 work together to lift the steel structure to the set height; the following support mechanism 4 adjusts its support height as the H-beam steel column 1 increases in height, ensuring that the H-beam steel column 1 above the cut-off position 2 remains supported on the following support mechanism 4 during the lifting process. Figure 13 As shown; S5. Fixed Connection: Fix the H-shaped steel column 1 above the cut-off position 2 to the heightening sleeve 3, and fix the middle plate 12 at the break point of the cut-off position 2, such as... Figure 14 As shown; S6. Dismantling: Dismantle the following support mechanism 4 and the lifting mechanism 5, such as... Figure 15 As shown.

[0038] This method for raising the height of a steel structure building involves first cutting one side wing plate 11 of the H-beam column 1 at cut-off position 2, then cutting the other side wing plate 11, and finally cutting the middle plate 12. Before cutting the middle plate 12, raising sleeves 3 are installed on each wing plate 11, so that the raising sleeves 3 are fixedly connected to the H-beam column 1 below cut-off position 2 and slidably connected to the H-beam column 1 above cut-off position 2. After complete cutting, the lifting mechanism 5 is installed for lifting and raising. Firstly, the cutting method of cutting from both sides to the middle, and the installation of the raising sleeves 3 after cutting the wing plates 11 (which restricts the horizontal displacement of the H-beam column 1 above cut-off position 2 but does not restrict the height of the H-beam column 1 above cut-off position 2), improves the stability of the cutting process and prevents the final cut point from being on one side. Firstly, the lifting mechanism 5 is cut off before installation to prevent tilting or collapse of the building supported by the steel column, thus ensuring high safety. Secondly, the lifting mechanism 5 is cut off before installation to prevent damage to it during the cutting process. Thirdly, the heightening sleeve 3 guides the lifting process to improve the consistency of the overall rise. Fourthly, the following support mechanism 4 adjusts its support height as the H-shaped steel column 1 rises, ensuring that the H-shaped steel column 1 above the cut-off position 2 remains supported on the following support mechanism 4 during the rise. In this way, even if the lifting mechanism 5 suddenly fails, the following support mechanism 4 will still support the H-shaped steel column 1 above the cut-off position 2, improving overall stability and safety, and avoiding the need for shims to raise the column, making construction convenient and efficient.

[0039] It should be noted that the steel structure building has multiple H-shaped steel columns 1. Each H-shaped steel column 1 can be cut off at the bottom and equipped with a lifting mechanism in sequence through S1 to S4, or multiple or all of them can be cut off at the bottom and equipped with a lifting mechanism at the same time through S1 to S4. However, during the lifting, all lifting mechanisms lift together, so that each H-shaped steel column 1 rises at the same time, thereby making the steel structure building rise steadily.

[0040] Furthermore, in this embodiment, in S2, as... Figure 8As shown, the following support mechanism 4 includes a synchronous motor 41, a screw 42, and a nut seat 43. The synchronous motor 41 and the nut seat 43 are respectively mounted on the H-shaped steel column 1 and the heightening sleeve 3 above the cut-off position 2. The screw 42 is fixedly connected to the conveying shaft of the synchronous motor 41 and threadedly connected to the nut seat 43. In S4, the synchronous motor 41 drives the screw 42 to rotate according to the height increase signal of the H-shaped steel column 1 above the cut-off position 2, so that the length of the screw 42 between the synchronous motor 41 and the nut seat 43 increases synchronously with the height of the H-shaped steel column 1 above the cut-off position 2. The synchronous increase of the length of the screw 42 between the synchronous motor 41 and the nut seat 43 with the height of the H-shaped steel column 1 above the cut-off position 2 avoids the screw 42 pulling down the H-shaped steel column 1 above the cut-off position 2 and affecting the lifting movement. On the other hand, it maintains the supporting effect of the screw 42 on the H-shaped steel column 1 above the cut-off position 2, improving stability and safety. Preferably, the screw 42 is set vertically, and a circumferential limiting sleeve can also be set on the H-shaped steel column 1 and the heightening sleeve 3 above the cut-off position 2 so that the screw 42 passes through the circumferential limiting sleeve.

[0041] Furthermore, this embodiment also includes step S0, which precedes S1, for height confirmation and baseline marking: confirming the height of the H-shaped steel column 1 of the steel structure building, and installing a height detection mechanism 6 on one side of the H-shaped steel column 1, such as... Figure 1 As shown, this is used to detect the height of the H-beam column 1 above the cut-off position 2 in real time and generate an increase signal for the height of the H-beam column 1 above the cut-off position 2. In this way, the height of the H-beam column 1 can be detected in real time, and the increase signal can be sent to the control center 9 to prevent excessive or insufficient increase.

[0042] Furthermore, in this embodiment, in S0, as Figure 3 As shown, the starting point baseline 8 and the ending point baseline 7 of the jacking are marked on the lower part of the H-beam column 1 according to the height increase, so that the height detection mechanism 6 corresponds to the height of the starting point baseline 8. Specifically, both the starting point baseline 8 and the ending point baseline 7 are horizontal lines, and the starting point baseline 8 is located above the ending point baseline 7. By marking the starting point baseline 8 and the ending point baseline 7, the final height increase position of the H-beam column 1 is guaranteed, further preventing excessive or insufficient height increase.

[0043] Furthermore, in this embodiment, in S0, a termination signal generating component 71 is provided on the lifting endpoint baseline 7 to issue a lifting termination signal when the lifting endpoint baseline 7 corresponds to the height of the height detection mechanism 6, further preventing excessive or insufficient lifting.

[0044] Furthermore, in this embodiment, the termination signal generating component 71, the height detection mechanism 6, the synchronous motor 41, and the lifting mechanism 5 are all connected to the control center 9 via signal transmission. This allows for coordinated control through the control center 9, improving the level of automation and thus further enhancing construction efficiency, stability, and safety. The termination signal generating component 71, the height detection mechanism 6, the synchronous motor 41, the lifting mechanism 5, and the control center 9 can all be existing conventional mechanisms or components; their specific structures will not be described in detail here.

[0045] Furthermore, in this embodiment, in step S4, the control center 9, based on the detection signals from the height detection mechanisms 6 corresponding to each H-shaped steel column 1, causes the lifting mechanisms 5 to lift together, ensuring that the maximum height difference of the H-shaped steel columns 1 above each cut-off position 2 is within a set range. This further improves the stability of the overall lifting of the steel structure building.

[0046] Furthermore, in this embodiment, in S4, when the lifting endpoint baseline 7 corresponds to the height of the height detection mechanism 6, the control center 9 receives the termination signal from the termination signal generating component 71, causing the corresponding lifting mechanism 5 to stop.

[0047] Furthermore, in this embodiment, in S1, a lifting support 13 is provided above the cut-off position 2 of the H-shaped steel column 1, and in S3, the lifting mechanism 5 is supported on the lifting support 13.

[0048] Furthermore, in this embodiment, the lifting mechanism 5 includes a jack. The jack is signal-connected to the control center 9.

[0049] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, should fall within the protection scope of the present invention.

Claims

1. A method for increasing the height of a steel structure building, characterized in that, Includes the following steps: S1. Confirm the cut-off position (2): Confirm the cut-off position (2) at the bottom of the H-beam column (1); S2. Sequential Cutting: First, cut the wing plates (11) on both sides of the cut position (2) of the H-shaped steel column (1). After the wing plates (11) are cut, install the heightening sleeve (3) on the wing plates (11) so that the heightening sleeve (3) is fixedly connected to the H-shaped steel column (1) below the cut position (2) and slidably connected to the H-shaped steel column (1) above the cut position (2). A following support mechanism (4) is set between the H-shaped steel column (1) above the cut position (2) and the heightening sleeve (3). Then, cut the middle plate (12) of the H-shaped steel column (1) between the two wing plates (11) at the cut position (2). S3. Set up a lifting mechanism (5): Set up a lifting mechanism (5) on one side of the H-shaped steel column (1) so that the lifting mechanism (5) supports the H-shaped steel column (1) above the cut-off position (2); S4, Lifting: All lifting mechanisms (5) lift together to lift the steel structure building to the set height; the following support mechanism (4) adjusts the support height as the H-shaped steel column (1) increases, so that the H-shaped steel column (1) above the cut-off position (2) remains supported on the following support mechanism (4) during the increase in height; S5. Fixed connection: The H-shaped steel column (1) above the fixed cut-off position (2) and the heightening sleeve (3) are fixedly connected, and the middle plate (12) is fixedly connected at the cut-off position (2) at the break-off opening; S6. Dismantle: Dismantle the following support mechanism (4) and the lifting mechanism (5); In S2, the following support mechanism (4) includes a synchronous motor (41), a screw (42), and a nut seat (43). The synchronous motor (41) is mounted on the heightening sleeve (3), and the nut seat (43) is mounted on the H-shaped steel column (1) above the cut-off position (2). The screw (42) is fixedly connected to the conveying shaft of the synchronous motor (41) and threadedly connected to the nut seat (43). In S4, the synchronous motor (41) drives the screw (42) to rotate according to the height increase signal of the H-shaped steel column (1) above the cut-off position (2), so that the length of the screw (42) between the synchronous motor (41) and the nut seat (43) increases synchronously with the height of the H-shaped steel column (1) above the cut-off position (2).

2. The method for increasing the height of a steel structure building according to claim 1, characterized in that, It also includes step S0, which is set before S1, height confirmation and baseline marking: confirming the height of the H-shaped steel column (1) of the steel structure building, and setting up a height detection mechanism (6) on one side of the H-shaped steel column (1) to detect the height of the H-shaped steel column (1) above the cut-off position (2) in real time and generate the height increase signal of the H-shaped steel column (1) above the cut-off position (2).

3. The method for increasing the height of a steel structure building according to claim 2, characterized in that: In the S0, the starting point baseline (8) and the ending point baseline (7) of the jacking are marked on the lower part of the H-shaped steel column (1) according to the height increase, so that the height detection mechanism (6) corresponds to the height of the starting point baseline (8).

4. The method for increasing the height of a steel structure building according to claim 3, characterized in that: In the S0, a termination signal generating component (71) is provided on the lifting end baseline (7) for issuing a lifting termination signal when the height of the lifting end baseline (7) corresponds to that of the height detection mechanism (6).

5. The method for increasing the height of a steel structure building according to claim 4, characterized in that: The termination signal generating component (71), height detection mechanism (6), synchronous motor (41), and lifting mechanism (5) are all connected to the control center (9) via signal.

6. The method for increasing the height of a steel structure building according to claim 5, characterized in that: In S4, the control center (9) uses the detection signal from the height detection mechanism (6) corresponding to each H-shaped steel column (1) to make the lifting mechanism (5) lift together, and make the maximum height difference of the H-shaped steel column (1) above each cut-off position (2) within the set range.

7. The method for increasing the height of a steel structure building according to claim 6, characterized in that: In S4, when the height of the lifting endpoint baseline (7) corresponds to the height of the height detection mechanism (6), the control center (9) receives the termination signal from the termination signal generator (71) and stops the corresponding lifting mechanism (5).

8. The method for increasing the height of a steel structure building according to any one of claims 1 to 7, characterized in that: In S1, a lifting support (13) is set above the cut-off position (2) of the H-shaped steel column (1), and in S3, the lifting mechanism (5) is supported on the lifting support (13).

9. The method for increasing the height of a steel structure building according to any one of claims 1 to 7, characterized in that: The lifting mechanism (5) includes a jack.

Images