A method for adjusting height difference of steel platform

Abstract

The present invention discloses a method for adjusting the height difference of a steel platform, which solves the technical problem of the existing technology that the petal platform plate has a height difference after the main body of the steel structure building is completed and the steel structure floor platform support is removed. The present invention includes the following steps: Step 1, marking the area where the height difference of the petal platform plate is to be adjusted; Step 2, setting a height difference adjustment tool in the area where the height difference of the petal platform plate is to be adjusted; Step 3, cutting the petal platform plate and the secondary beam; Step 4, adjusting and measuring the elevation; Step 5, welding the secondary beam and the steel plate; Step 6, re-measurement. The present invention is scientifically and rationally designed, and can effectively adjust the height difference of the steel platform after the main body of the steel structure building is completed and the steel structure floor platform support is removed, and can control the maximum height difference of the platform within ±3cm, thereby ensuring the quality of the steel platform structure.

Description

Technical Field

[0001] The invention belongs to the technical field of steel structure building construction, and particularly relates to a method for adjusting the height difference of a steel platform. Background Art

[0002] Steel structure building is a new type of building system that breaks down the industry boundaries between the real estate industry, construction industry, and metallurgical industry, integrating them into a new industrial system. This is the steel structure building system that is generally favored by industry insiders.

[0003] Steel structures are buildings constructed with structural steel as their load-bearing structure. These structures typically consist of beams, columns, and trusses made from sections of steel and steel plates. Together with the roof, floors, and walls, these structures form the entire building.

[0004] Compared to traditional concrete buildings, steel structures use steel plates or steel sections instead of reinforced concrete, resulting in higher strength and improved earthquake resistance. Furthermore, because components can be factory-fabricated and installed on-site, construction time is significantly reduced. The reusability of steel significantly reduces construction waste, making it more environmentally friendly. Consequently, it is widely adopted worldwide for both industrial and residential construction.

[0005] The application of steel structure buildings in high-rise and super high-rise buildings is becoming increasingly mature, gradually becoming the mainstream construction technology and the development direction of future buildings.

[0006] After the main construction of the steel structure building is completed and the steel structure floor platform support is removed, the platform elevation often deviates. The main reasons are as follows:

[0007] 1. Welding deviation of outer frame column.

[0008] After the on-site outer frame column was installed and corrected, the team started welding. They did not form a whole as required by the plan and set up temporary supports before welding. As a result, the outer frame column was welded in a free state, and the deformation of the lower welding caused a large deformation of the upper support.

[0009] 2. The petal platform is not arched.

[0010] During the construction process, the team did not arch the inner side of the petal platform according to technical requirements, and the temporary support was installed after the petal platform was assembled, losing its original size pre-control function.

[0011] 3. The accumulated error has not been eliminated.

[0012] As the main steel structure was constructed layer by layer, the cumulative errors became large, and the cumulative errors were not eliminated during the manufacturing and assembly process.

[0013] Therefore, the present invention designs a method for adjusting the height difference of a steel platform, which becomes a technical problem that needs to be solved urgently by technicians in the relevant technical field. Summary of the Invention

[0014] The technical problem to be solved by the present invention is to provide a method for adjusting the height difference of a steel platform, so as to adjust the height difference of the steel platform after the main body of the steel structure building is completed and the steel structure floor platform support is removed.

[0015] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0016] A method for adjusting the height difference of a steel platform comprises the following steps:

[0017] Step 1: Mark the area where the height difference of the petal platform is to be adjusted;

[0018] Step 2: Set the height difference adjustment tooling in the area where the height difference of the petal platform plate is to be adjusted;

[0019] Step 3: Cutting the petal platform plate and secondary beam;

[0020] Step 4: Adjust the elevation and measure;

[0021] Step 5: Welding the secondary beam and steel plate;

[0022] Step 6: Retest.

[0023] Furthermore, in step 4, the elevation adjustment includes raising the elevation of the petal platform plate and lowering the elevation of the petal platform plate.

[0024] Furthermore, when the elevation of the petal platform plate is raised and adjusted, the secondary beam of the petal platform plate is partially cut and the elevation is adjusted by a hand hoist; the area to be cut is marked in the area where the height difference of the petal platform plate is to be adjusted, and a hand hoist is set on the main beam or outer frame column of the upper platform before cutting. After adjusting the force of the hand hoist, the petal platform plate and its secondary beam are cut, and the upper flange plate and web plate of the secondary beam of the petal platform plate are cut. The steel plate is lifted upwards by a hand hoist, and the cutting position of the secondary beam is polished, and then welding is carried out. After welding is completed, the hand hoist is removed and re-measurement is carried out.

[0025] Furthermore, the web cutting depth is 2 / 3 times the web height and must not damage the lower flange plate.

[0026] Furthermore, when using a hand chain hoist to lift the steel plate upward, it should be lifted gradually, with each lifting height being 1 cm.

[0027] Preferably, when a hand chain hoist is used to lift the steel plate upward, a level is used to measure during the lifting process, and the lifting is stopped after the steel plate is lifted to the designed height.

[0028] Furthermore, when the elevation of the petal platform plate is lowered for adjustment, the secondary beam of the petal platform plate is partially cut and the elevation is adjusted by a jack; the area to be cut is marked in the area where the height difference of the petal platform plate is to be adjusted, and two φ16 steel ropes are set on the main beam or outer frame column of the upper platform before cutting to prevent the platform from falling during construction, and the steel ropes are in a loose state; then the petal platform plate and its secondary beam are cut, the lower flange plate and web plate of the secondary beam of the petal platform plate are cut, the cutting position of the secondary beam is polished, and then welding is carried out. After welding is completed, the jack and steel rope are removed, and re-measurement is carried out.

[0029] Furthermore, the cutting depth of the petal platform plate web is 2 / 3 times the web height and must not damage the upper flange plate.

[0030] Furthermore, the petal platform was pressed down using a jack, and the platform was lowered step by step, with each step lowering the height by 1 cm.

[0031] Preferably, a level is used for measurement during the descent process, and the vehicle stops after descending to the designed height.

[0032] Furthermore, in step 3, in order to prevent the petal platform plate from falling during the cutting process, a temporary baffle is welded before cutting;

[0033] Preferably, in step 1, before marking the area where the height difference of the petal platform plate is to be adjusted, debris on the petal floor plate is first cleaned.

[0034] Furthermore, the height difference adjustment tooling includes a jack and / or a fall chain

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] The design of the present invention is scientific and reasonable. After the main body of the steel structure building is completed and the steel structure floor platform support is removed, the height difference of the steel platform can be effectively adjusted, and the maximum height difference of the platform can be controlled within ±3cm, thereby ensuring the structural quality of the steel platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the construction process of the present invention.

[0038] Figure 2 This is a schematic diagram of the core tube connection platform processing measures of the present invention.

[0039] Figure 3 It is a schematic diagram of the elevation raising measure of the cantilever platform of the present invention.

[0040] Figure 4 for Figure 3 Magnified view of part A.

[0041] Figure 5It is a schematic diagram of the elevation lowering measure of the cantilever steel platform of the present invention.

[0042] Figure 6 for Figure 5 Magnified view of part A. DETAILED DESCRIPTION

[0043] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] Example 1.

[0045] like Figure 1-6 As shown, the present invention provides a method for adjusting the height difference of a steel platform, comprising the following steps:

[0046] Step 1: Mark the area where the height difference of the petal platform is to be adjusted;

[0047] Step 2: Set the height difference adjustment tooling in the area where the height difference of the petal platform plate is to be adjusted;

[0048] Step 3: Cutting the petal platform plate and secondary beam;

[0049] Step 4: Adjust the elevation and measure;

[0050] Step 5: Welding the secondary beam and steel plate;

[0051] Step 6: Retest.

[0052] The design of the present invention is scientific and reasonable. After the main body of the steel structure building is completed and the steel structure floor platform support is removed, the height difference of the steel platform can be effectively adjusted, and the maximum height difference of the platform can be controlled within ±3cm, thereby ensuring the structural quality of the steel platform.

[0053] Example 2.

[0054] like Figure 1-6 As shown, the present invention provides a method for adjusting the height difference of a steel platform, comprising the following steps:

[0055] Step 1: Mark the area where the height difference of the petal platform is to be adjusted;

[0056] Step 2: Set the height difference adjustment tooling in the area where the height difference of the petal platform plate is to be adjusted;

[0057] Step 3: Cutting the petal platform plate and secondary beam;

[0058] Step 4: Adjust the elevation and measure;

[0059] Step 5: Welding the secondary beam and steel plate;

[0060] Step 6: Retest.

[0061] In step 4, the elevation adjustment includes raising the elevation of the petal platform plate and lowering the elevation of the petal platform plate.

[0062] This second embodiment, based on the first embodiment, provides a more specific method for adjusting the elevation. Specifically, the elevation adjustment includes both raising and lowering the petal platform. This invention is scientifically and rationally designed. After the main steel structure construction is completed and the steel floor platform supports are removed, the height difference of the steel platform can be effectively adjusted. The maximum height difference of the platform can be controlled within ±3 cm, ensuring the structural quality of the steel platform.

[0063] Example 3.

[0064] like Figure 1-6 As shown, the present invention provides a method for adjusting the height difference of a steel platform, comprising the following steps:

[0065] Step 1: Mark the area where the height difference of the petal platform is to be adjusted;

[0066] Step 2: Set the height difference adjustment tooling in the area where the height difference of the petal platform plate is to be adjusted;

[0067] Step 3: Cutting the petal platform plate and secondary beam;

[0068] Step 4: Adjust the elevation and measure;

[0069] Step 5: Welding the secondary beam and steel plate;

[0070] Step 6: Retest.

[0071] In step 4, the elevation adjustment includes raising the elevation of the petal platform plate and lowering the elevation of the petal platform plate.

[0072] When the elevation of the petal platform plate is raised and adjusted, the secondary beam of the petal platform plate is partially cut and the elevation is adjusted by a hand hoist; the area to be cut is marked in the area where the height difference of the petal platform plate is to be adjusted, and a hand hoist is set on the main beam or outer frame column of the upper platform before cutting. After adjusting the force of the hand hoist, the petal platform plate and its secondary beam are cut. The upper flange plate and web plate of the secondary beam of the petal platform plate are cut, and the steel plate is lifted upwards by a hand hoist, and the cutting position of the secondary beam is polished, and then welding is carried out. After welding is completed, the hand hoist is removed and re-measurement is carried out.

[0073] Based on Example 2, this Example 3 provides a more preferred method for adjusting the elevation of the petal platform plate, specifically: when adjusting the elevation of the petal platform plate, the secondary beam of the petal platform plate is partially cut and the elevation is adjusted by a hand winch; the area to be cut is marked in the area where the height difference of the petal platform plate is to be adjusted, and a hand winch is set on the main beam or outer frame column of the upper platform before cutting. After adjusting the force of the hand winch, the petal platform plate and its secondary beam are cut, the upper flange plate and the web plate of the secondary beam of the petal platform plate are cut, the steel plate is lifted upward by a hand winch, the cutting position of the secondary beam is polished, and then welding is carried out. After welding is completed, the hand winch is removed and re-measurement is carried out. According to the above method, the present invention can effectively adjust the height difference of the steel platform after the construction of the main body of the steel structure building is completed and the steel structure floor platform support is removed, and can control the maximum height difference of the platform within ±3cm, thereby ensuring the quality of the steel platform structure.

[0074] Example 4.

[0075] like Figure 1-6 As shown, the present invention provides a method for adjusting the height difference of a steel platform, comprising the following steps:

[0076] Step 1: Mark the area where the height difference of the petal platform is to be adjusted;

[0077] Step 2: Set the height difference adjustment tooling in the area where the height difference of the petal platform plate is to be adjusted;

[0078] Step 3: Cutting the petal platform plate and secondary beam;

[0079] Step 4: Adjust the elevation and measure;

[0080] Step 5: Welding the secondary beam and steel plate;

[0081] Step 6: Retest.

[0082] In step 4, the elevation adjustment includes raising the elevation of the petal platform plate and lowering the elevation of the petal platform plate.

[0083] When adjusting the elevation of the petal platform plate, the secondary beam of the petal platform plate is partially cut and the elevation is adjusted using a hand hoist. The area to be cut is marked in the area where the height difference of the petal platform plate is to be adjusted. Before cutting, a hand hoist is set on the main beam or outer frame column of the upper platform. After adjusting the force of the hand hoist, the petal platform plate and its secondary beam are cut. The upper flange plate and web plate of the petal platform plate secondary beam are cut. The steel plate is lifted upward using a hand hoist. The cutting position of the secondary beam is polished and then welded. After welding is completed, the hand hoist is removed and re-measured. The web plate cutting depth is 2 / 3 times the web plate height and the lower flange plate must not be damaged.

[0084] This fourth embodiment, based on the third embodiment, provides a more optimal method for adjusting the elevation of the petal platform. Specifically, the web cutting depth is 2 / 3 times the web height, and the lower flange plate must not be damaged. According to this method, the present invention can effectively adjust the height difference of the steel platform after the main steel structure construction is completed and the steel structure floor platform support is removed. The maximum height difference of the platform can be controlled within ±3 cm, ensuring the structural quality of the steel platform.

[0085] Example 5.

[0086] like Figure 1-6 As shown, the present invention provides a method for adjusting the height difference of a steel platform, comprising the following steps:

[0087] Step 1: Mark the area where the height difference of the petal platform is to be adjusted;

[0088] Step 2: Set the height difference adjustment tooling in the area where the height difference of the petal platform plate is to be adjusted;

[0089] Step 3: Cutting the petal platform plate and secondary beam;

[0090] Step 4: Adjust the elevation and measure;

[0091] Step 5: Welding the secondary beam and steel plate;

[0092] Step 6: Retest.

[0093] In step 4, the elevation adjustment includes raising the elevation of the petal platform plate and lowering the elevation of the petal platform plate.

[0094] When the elevation of the petal platform plate is raised and adjusted, the secondary beam of the petal platform plate is partially cut and the elevation is adjusted by a hand hoist; the area to be cut is marked in the area where the height difference of the petal platform plate is to be adjusted, and a hand hoist is set on the main beam or outer frame column of the upper platform before cutting. After adjusting the force of the hand hoist, the petal platform plate and its secondary beam are cut. The upper flange plate and web plate of the secondary beam of the petal platform plate are cut, and the steel plate is lifted upwards by a hand hoist, and the cutting position of the secondary beam is polished, and then welding is carried out. After welding is completed, the hand hoist is removed and re-measurement is carried out.

[0095] When using a hand chain hoist to lift the steel plate upward, adopt a gradual lifting method, with each lifting height being 1 cm; preferably, when using a hand chain hoist to lift the steel plate upward, use a level to measure during the lifting process, and stop lifting after reaching the designed height.

[0096] Based on Example 3, this Example 5 provides a more preferred method for adjusting the elevation of the petal platform plate. Specifically, when using a hand chain hoist to lift the steel plate upward, a gradual lifting method is adopted, with each lifting height being 1 cm. Preferably, when using a hand chain hoist to lift the steel plate upward, a level is used to measure the lifting process, and the lifting is stopped after the steel plate is lifted to the designed height. According to the above method, the present invention can effectively adjust the height difference of the steel platform after the main construction of the steel structure building is completed and the steel structure floor platform support is removed, and can control the maximum height difference of the platform within ±3 cm, thereby ensuring the structural quality of the steel platform.

[0097] Example 6.

[0098] like Figure 1-6 As shown, the present invention provides a method for adjusting the height difference of a steel platform, comprising the following steps:

[0099] Step 1: Mark the area where the height difference of the petal platform is to be adjusted;

[0100] Step 2: Set the height difference adjustment tooling in the area where the height difference of the petal platform plate is to be adjusted;

[0101] Step 3: Cutting the petal platform plate and secondary beam;

[0102] Step 4: Adjust the elevation and measure;

[0103] Step 5: Welding the secondary beam and steel plate;

[0104] Step 6: Retest.

[0105] In step 4, the elevation adjustment includes raising the elevation of the petal platform plate and lowering the elevation of the petal platform plate.

[0106] When the elevation of the petal platform plate is lowered for adjustment, the secondary beam of the petal platform plate is partially cut and the elevation is adjusted by a jack; the area to be cut is marked in the area where the height difference of the petal platform plate is to be adjusted, and two φ16 steel ropes are set on the main beam or outer frame column of the upper platform before cutting to prevent the platform from falling during construction. The steel ropes are in a loose state; then the petal platform plate and its secondary beam are cut, the lower flange plate and web plate of the secondary beam of the petal platform plate are cut, the cutting position of the secondary beam is polished, and then welding is carried out. After welding is completed, the jack and steel rope are removed, and re-measurement is carried out.

[0107] Based on Example 2, this Example 6 provides a more preferred method for adjusting the elevation of the petal platform plate, specifically: when adjusting the elevation of the petal platform plate, the secondary beam of the petal platform plate is partially cut and the elevation is adjusted by a jack; the area to be cut is marked in the area where the height difference of the petal platform plate is to be adjusted, and two φ16 steel wire ropes are set on the main beam or outer frame column of the upper platform before cutting to prevent the platform from falling during construction. The steel wire ropes are in a loose state; then the petal platform plate and its secondary beam are cut, the lower flange plate and web plate of the secondary beam of the petal platform plate are cut, the cutting position of the secondary beam is polished, and then welding is performed. After welding is completed, the jack and steel wire rope are removed, and re-measurement is performed. According to the above method, the present invention can effectively adjust the height difference of the steel platform after the construction of the steel structure building body is completed and the steel structure floor platform support is removed, and can control the maximum height difference of the platform within ±3cm, ensuring the quality of the steel platform structure.

[0108] Example 7.

[0109] like Figure 1-6 As shown, the present invention provides a method for adjusting the height difference of a steel platform, comprising the following steps:

[0110] Step 1: Mark the area where the height difference of the petal platform is to be adjusted;

[0111] Step 2: Set the height difference adjustment tooling in the area where the height difference of the petal platform plate is to be adjusted;

[0112] Step 3: Cutting the petal platform plate and secondary beam;

[0113] Step 4: Adjust the elevation and measure;

[0114] Step 5: Welding the secondary beam and steel plate;

[0115] Step 6: Retest.

[0116] In step 4, the elevation adjustment includes raising the elevation of the petal platform plate and lowering the elevation of the petal platform plate.

[0117] When adjusting the elevation of the petal platform slab, the secondary beam of the petal platform slab is partially cut and the elevation is adjusted using a jack. The area to be cut is marked in the area where the height difference of the petal platform slab is to be adjusted. Before cutting, two φ16 steel wire ropes are installed on the main beam or outer frame column of the upper platform to prevent the platform from falling during construction. The steel wire ropes are in a slack state. The petal platform slab and its secondary beams are then cut. The lower flange plate and web plate of the petal platform slab secondary beam are cut. The cutting position of the secondary beam is polished and then welded. After welding is completed, the jack and wire rope are removed and re-measured. The cutting depth of the petal platform slab web plate is 2 / 3 times the web plate height and the upper flange plate must not be damaged.

[0118] Based on Example 6, this seventh embodiment provides a more preferred method for adjusting the elevation of the petal platform. Specifically, the petal platform web is cut to a depth of 2 / 3 its web height, without damaging the upper flange. According to this method, the present invention can effectively adjust the height difference of the steel platform after the main steel structure construction is completed and the steel structure floor platform support is removed. The maximum height difference of the platform can be controlled within ±3 cm, ensuring the structural quality of the steel platform.

[0119] Example 8.

[0120] like Figure 1-6 As shown, the present invention provides a method for adjusting the height difference of a steel platform, comprising the following steps:

[0121] Step 1: Mark the area where the height difference of the petal platform is to be adjusted;

[0122] Step 2: Set the height difference adjustment tooling in the area where the height difference of the petal platform plate is to be adjusted;

[0123] Step 3: Cutting the petal platform plate and secondary beam;

[0124] Step 4: Adjust the elevation and measure;

[0125] Step 5: Welding the secondary beam and steel plate;

[0126] Step 6: Retest.

[0127] In step 4, the elevation adjustment includes raising the elevation of the petal platform plate and lowering the elevation of the petal platform plate.

[0128] When the elevation of the petal platform plate is lowered and adjusted, the secondary beam of the petal platform plate is partially cut and the elevation is adjusted by a jack; the area to be cut is marked in the area where the height difference of the petal platform plate is to be adjusted. Before cutting, two φ16 steel wire ropes are set on the main beam or outer frame column of the upper platform to prevent the platform from falling during construction. The steel wire ropes are in a loose state; then the petal platform plate and its secondary beam are cut, the lower flange plate and web plate of the petal platform plate secondary beam are cut, the cutting position of the secondary beam is polished, and then welding is carried out. After welding is completed, the jack and steel wire rope are removed and re-measured. Use the jack to press down the petal platform plate, and adopt a gradual lowering method, reducing the height by 1 cm each time; preferably, use a level to measure during the descent process, and stop after descending to the designed height.

[0129] Based on Example 6, this Example 8 provides a more preferred method for adjusting the elevation of the petal platform. Specifically, the petal platform is pressed downward using a jack, gradually lowering the platform by 1 cm at a time. Preferably, a level is used to measure the elevation during the descent, and the platform is stopped after it reaches the designed height. According to the above method, the present invention can effectively adjust the height difference of the steel platform after the main steel structure construction is completed and the steel structure floor platform support is removed. The maximum height difference of the platform can be controlled within ±3 cm, ensuring the structural quality of the steel platform.

[0130] Example 9.

[0131] like Figure 1-6 As shown, the present invention provides a method for adjusting the height difference of a steel platform, comprising the following steps:

[0132] Step 1: Mark the area where the height difference of the petal platform is to be adjusted;

[0133] Step 2: Set the height difference adjustment tooling in the area where the height difference of the petal platform plate is to be adjusted;

[0134] Step 3: Cutting the petal platform plate and secondary beam;

[0135] Step 4: Adjust the elevation and measure;

[0136] Step 5: Welding the secondary beam and steel plate;

[0137] Step 6: Retest.

[0138] In step 3, in order to prevent the petal platform board from falling during the cutting process, a temporary baffle is welded for protection before cutting; preferably, in step 1, before marking the area where the height difference of the petal platform board is to be adjusted, the petal floor debris is cleaned up first.

[0139] This Example 9, based on Example 1, provides a more specific method, specifically: in step 3, to prevent the petal platform from falling during cutting, a temporary baffle is welded before cutting; preferably, in step 1, before marking the area where the petal platform height difference is to be adjusted, debris on the petal floor is first cleaned. The present invention is scientifically and rationally designed. After the main steel structure building is completed and the steel structure floor platform support is removed, the height difference of the steel platform can be effectively adjusted, and the maximum height difference of the platform can be controlled within ±3 cm, ensuring the structural quality of the steel platform.

[0140] Example 10.

[0141] like Figure 1-6 As shown, the present invention provides a method for adjusting the height difference of a steel platform, comprising the following steps:

[0142] Step 1: Mark the area where the height difference of the petal platform is to be adjusted;

[0143] Step 2: Set the height difference adjustment tooling in the area where the height difference of the petal platform plate is to be adjusted;

[0144] Step 3: Cutting the petal platform plate and secondary beam;

[0145] Step 4: Adjust the elevation and measure;

[0146] Step 5: Welding the secondary beam and steel plate;

[0147] Step 6: Retest.

[0148] The height adjustment tooling includes a jack and / or a fall chain.

[0149] This Example 10, based on Example 1, provides a more specific method, specifically: the height difference adjustment tool includes a jack and / or a fall chain. This invention is scientifically and rationally designed. After the main steel structure construction is completed and the steel structure floor platform supports are removed, the height difference of the steel platform can be effectively adjusted. The maximum height difference of the platform can be controlled within ±3 cm, ensuring the structural quality of the steel platform.

[0150] The platform processing method of the present invention is as follows:

[0151] 1. Treatment measures for the core tube connection platform.

[0152] like Figure 2 As shown, a temporary baffle is welded before cutting to prevent the platform from falling during the cutting process. Depending on the adjustment direction, a jack is installed on the core tube or the platform. The platform elevation is adjusted by the jack.

[0153] 2. Measures to increase the elevation of the cantilever platform.

[0154] like Figure 3 and Figure 4 As shown, the secondary beam of the platform was partially cut and the elevation was adjusted using a hand hoist. Based on the measurement data, the engineering technicians designated the platform that needed to be processed on site and marked the area that needed to be cut.

[0155] Before cutting, set up a hand chain hoist on the main beam or outer frame column of the upper platform. After adjusting the force of the hand chain hoist, cut the petal platform plate and the platform secondary beam. The secondary beam adopts a partial cutting method, that is, cutting the upper flange plate and web plate. The web plate cutting depth is controlled to about 2 / 3 of the web plate height, and the lower flange plate must not be damaged. Use the hand chain hoist to lift the steel plate upward, adopting a gradual lifting method, each lifting height is about 1cm.

[0156] During the lifting process, a level is used for measurement. Once the lifting reaches the designed height, the lifting stops. The secondary beam cutting position is polished before welding. After welding is complete, the chain hoist is removed and remeasured.

[0157] 3. Measures to lower the elevation of the cantilever steel platform.

[0158] like Figure 5 and Figure 6 As shown, the secondary beam of the platform was partially cut and the elevation was adjusted using a jack. Based on the measurement data, the engineering technicians designated the platform that needed to be processed on site and marked the area that needed to be cut.

[0159] Before cutting, install two φ16 steel wire ropes on the upper platform's main beam or outer frame column to prevent the platform from falling during construction. The wire ropes are in a slack state. The petal platform slab and secondary beams are then cut. The secondary beams are cut locally, cutting the lower flange and web. The web cutting depth is controlled to approximately 2 / 3 of the web's height, ensuring that the upper flange is not damaged. A jack is used to press the steel plate downward, gradually lowering it by approximately 1 cm at a time.

[0160] Use a level to measure during the descent, stopping when the beam reaches the designed height. Grind the secondary beam cutouts before welding. After welding is complete, remove the jacks and wire ropes and re-measure.

[0161] Finally, it should be noted that the above embodiments are merely preferred embodiments of the present invention and are intended to illustrate the technical solutions of the present invention, rather than limiting them, and certainly not limiting the patent scope of the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features therein may be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention. In other words, any changes or refinements made to the main design concept and spirit of the present invention that have no substantive significance, provided that the technical problems they solve are still consistent with those of the present invention, should be included in the protection scope of the present invention. In addition, the direct or indirect application of the technical solutions of the present invention to other related technical fields should also be included in the patent protection scope of the present invention.

Claims

1. A method for adjusting the height difference of a steel platform, characterized in that: The following steps are involved: Step 1: Mark the area where the height difference of the petal platform is to be adjusted; Step 2: Set the height difference adjustment tooling in the area where the height difference of the petal platform plate is to be adjusted; Step 3: Cutting the petal platform plate and secondary beam; Step 4: Adjust the elevation and measure; Step 5: Welding the secondary beam and steel plate; Step 6: Retest; In step 4, the elevation adjustment includes raising the elevation of the petal platform plate and lowering the elevation of the petal platform plate; When the elevation of the petal platform plate is raised and adjusted, the secondary beam of the petal platform plate is partially cut and the elevation is adjusted by a hand hoist; the area to be cut is marked in the area where the height difference of the petal platform plate is to be adjusted, and a hand hoist is set on the main beam or outer frame column of the upper platform before cutting. After adjusting the force of the hand hoist, the petal platform plate and its secondary beam are cut. The upper flange plate and web plate of the secondary beam of the petal platform plate are cut, and the steel plate is lifted upwards by a hand hoist, and the cutting position of the secondary beam is polished, and then welding is carried out. After welding is completed, the hand hoist is removed and re-measurement is carried out.

2. A method for adjusting the height difference of a steel platform according to claim 1, characterized in that: The web cutting depth is 2 / 3 times of the web height and must not damage the lower flange plate.

3. The method for adjusting the height difference of a steel platform according to claim 1, characterized in that: When using a hand hoist to lift the steel plate, lift it gradually, with each lifting height being 1 cm.

4. A method for adjusting the height difference of a steel platform according to claim 1, characterized in that: When using a hand hoist to lift the steel plate upwards, use a level to measure during the lifting process and stop lifting after reaching the designed height.

5. The method for adjusting the height difference of a steel platform according to claim 1, characterized in that: When the elevation of the petal platform plate is lowered for adjustment, the secondary beam of the petal platform plate is partially cut and the elevation is adjusted by a jack; the area to be cut is marked in the area where the height difference of the petal platform plate is to be adjusted, and two φ16 steel ropes are set on the main beam or outer frame column of the upper platform before cutting to prevent the platform from falling during construction. The steel ropes are in a loose state; then the petal platform plate and its secondary beam are cut, the lower flange plate and web plate of the secondary beam of the petal platform plate are cut, the cutting position of the secondary beam is polished, and then welding is carried out. After welding is completed, the jack and steel rope are removed, and re-measurement is carried out.

6. A method for adjusting the height difference of a steel platform according to claim 5, characterized in that: The cutting depth of the web of the petal platform plate is 2 / 3 times the web height and must not damage the upper flange plate.

7. A method for adjusting the height difference of a steel platform according to claim 5, characterized in that: Use a jack to press down the petal platform board, and lower it step by step, lowering it by 1 cm each time.

8. A method for adjusting the height difference of a steel platform according to claim 7, characterized in that: Use a level to measure during the descent and stop after descending to the designed height.

9. The method for adjusting the height difference of a steel platform according to claim 1, characterized in that: In step 3, in order to prevent the petal platform plate from falling during the cutting process, a temporary baffle is welded before cutting.

10. The method for adjusting the height difference of a steel platform according to claim 1, characterized in that: In step 1, before marking the area where the height difference of the petal platform plate is to be adjusted, first clean the petal floor plate of debris.

11. The method for adjusting the height difference of a steel platform according to claim 1, characterized in that: The height adjustment tooling includes a jack and / or a fall chain.

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