CN107035060A - A kind of welding box-shaped component of heavy in section heavy wall and preparation method thereof - Google Patents
A kind of welding box-shaped component of heavy in section heavy wall and preparation method thereof Download PDFInfo
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- CN107035060A CN107035060A CN201710428971.XA CN201710428971A CN107035060A CN 107035060 A CN107035060 A CN 107035060A CN 201710428971 A CN201710428971 A CN 201710428971A CN 107035060 A CN107035060 A CN 107035060A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C1/00—Building elements of block or other shape for the construction of parts of buildings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The present invention relates to a kind of welding box-shaped component, more particularly to a kind of welding box-shaped component of heavy in section heavy wall and preparation method thereof, belong to field of steel structure.Including box part, the side wall of described box part is provided with bracket component, described box part to be positioned by stiffener assembly.A kind of welding box-shaped component of heavy in section heavy wall and preparation method thereof compact conformation, further lifts manufacture craft, lifts product specification.
Description
Technical field
The present invention relates to a kind of welding box-shaped component, more particularly to a kind of welding box-shaped component of heavy in section heavy wall and its making
Method, belongs to field of steel structure.
Background technology
Developed rapidly recently as China's construction steel structure, heavy wall welding box-shaped component in heavy in section is widely used
To large-span steel, in high-rise, super high rise structure, it has following features：
1st, it is simple in construction, big load, large-span steel design requirement are adapted to, by many high-rise, super high steel structures,
Highrise steel structure engineering is used.
2nd, heavy wall welding box-shaped member section in heavy in section is big, weight weight, and box-type member is assembled and has great difficulty during docking,
Use conventional methods it is difficult to ensure that component assembly welding after indices reach design requirement, it is necessary to study new technology, develop
New method.
The content of the invention
The present invention mainly solves the deficiencies in the prior art there is provided a kind of compact conformation, effective to solve tradition
The problem of factorial praluction, the progress of making is greatly accelerated, the duration is shortened, while rational segment design reduces welding
Difficulty and workload a kind of welding box-shaped component of heavy in section heavy wall and preparation method thereof.
The above-mentioned technical problem of the present invention is mainly what is be addressed by following technical proposals：
A kind of welding box-shaped component of heavy in section heavy wall, including box part, the side wall of described box part are provided with bracket component,
Positioned in described box part by stiffener assembly；
Described bracket component includes and box part mutually fixed horizontal bracket, the top of described horizontal bracket and box
Between part, the bottom of horizontal bracket and oblique bracket is respectively equipped between box part；
Described stiffener assembly includes diaphragm plate and longitudinal stiffener, and described diaphragm plate is interruption-like to be consolidated with box part
Fixed, described longitudinal stiffener and some diaphragm plates are into vertical distribution.
Preferably, be provided with bracket strength plate in described horizontal bracket, the inwall of described box part, horizontal bracket it is upper
Portion is respectively equipped with equally distributed stress strengthening nail.
Preferably, described box part is assembled by web and flange plate.
A kind of welding box-shaped component of heavy in section heavy wall, is carried out according to the following steps：
(1), structural analysis：
Heavy wall welding box-shaped component in heavy in section includes member body, diaphragm plate, longitudinal stiffener, bracket, bracket strength plate；Structure
The cross section of part main body is rectangle, is formed by steel plate assembly welding；Diaphragm plate is placed in inside member body, and correspondence bracket is corresponding
Position, with solder design of the main body using groove welding and electroslag welding；Longitudinal stiffener is also placed in inside member body, has been optimized big
The stressing conditions of section structural member；Bracket is H types Member Welding in rectangular elements outer surface；
Bracket includes：Horizontal bracket (being used for girder steel connection), oblique bracket (being used for vertical supporting connection)；
Perfusion plain concrete in grout hole, the welding box-shaped member cavities of heavy in section heavy wall is needed out on diaphragm plate；
(2), structure member makes：
According to processing drawing requirement blanking cutting steel plate, steel plate is pressed into：Box-type member flange plate, web, diaphragm plate,
Longitudinal stiffener, horizontal bracket, oblique bracket and bracket strength plate；
Wing plate, the web of box-type member use the vertical blanking simultaneously of vertical bar cutting machine two sides, and numerical control is used to Irregular parts
Cutting machine carries out blanking, and bracket blanking needs technique to split H type brackets, and bracket flange plate distinguishes blanking with web；
(3), fabrication and installation moulding bed：
Component groups are filled with lower surface and just make face for loose tool, and loose tool, using being machined, is put down with component contact surface in load-bearing steel
Plan-position line, the diaphragm plate position line, the projection line of the bracket position line and the moulding bed position line of component flange plate are marked on platform, and
As benchmark, moulding bed is set；
(4), box-type member bottom wing listrium 1b is positioned：
Bottom wing listrium 1b is hung onto on moulding bed with purlin car, it is solid after the alignment end face tongue and groove position line, the projection line of center line
It is scheduled on moulding bed；
(5), longitudinal stiffener assembling：
Longitudinal stiffener is positioned on box-type member web 1c to be needed welding position, then to be assembled, assembly welding positioning
Weldering uses manual welding；
(6), box-type member web 1c is assembled：
It is vertical between two pieces of box-type member web 1c of bottom plate over-assemble, adjustment box-type member web 1c and bottom wing listrium 1b
Degree cannot be greater than 1mm；Then box-type member web 1c and bottom wing listrium 1b is subjected to positioning welding, positioning welding uses C02Gas
Protection weldering；When having stomata or crackle on tack welding, it is necessary to welded again after removing；
(7), the assembling of diaphragm plate：Diaphragm plate is inserted in the groove type component being made up of bottom wing listrium 1b and web 1c, it is right
Its accurate position line, diaphragm plate uses C0 with box-type member web 1c2Gas shielded is welded, and welds twice full penetration groove weld seam；
(8), concealment acceptance：
Check web 1c positions, web 1c and bottom wing listrium 1b perpendicularity, web 1c and bottom wing listrium 1b full penetration
Weld seam UT detections, weld appearance quality examination, debris in component；Acceptance(check) rear allows assembling top flange plate 1a；
(9), box-type member top flange plate 1a is assembled：
Top flange plate 1a is hung on, the perpendicularity for adjusting itself and web 1c cannot be greater than 1mm, then consolidate it with web 1c
Fixed, stationary positioned weldering equally uses C02Gas shielded is welded；Weld seam uses full penetration groove welding, because wall thickness is larger, takes pre- before weldering
Hot measure after heat and welding；" mouth " font is formed after the completion of welding；
(10), the assembling of diaphragm plate：
After box-type member assembling is finished, in diaphragm plate, dividing plate uses electroslag with top flange 1a and lower flange 1b junctions
Weldering；
(11), box-like body is corrected：
Box-like body welding after the completion of, preliminary surveying is carried out on horizontal moulding bed, at box-like body deformation as linearity,
Partly flat degree, side sway are corrected；Correction uses flame straightening, and its temperature value should be controlled between 750~900 DEG C, same
Position heating correction must not exceed 2 times, after correction, answer Slow cooling, not handy water quenching；
(12), box-like body end end mill processing：
Box-like body both ends of the surface are machined out using face miller, box-like body end face is hung down with casing center line
Directly, it is ensured that the geometrical length of casing, perpendicularity；
(13), the self-assembles of horizontal bracket, oblique bracket and bracket gusset：
Positioned, the edge of a wing of the H type bracket components obtained by blanking and web are assembled, assembling mode is adopted according to part drawing
Assembled with conventional H types component, stationary positioned weldering equally uses C02Gas shielded is welded；Weld seam uses full penetration groove welding；
(14), welding equipment bracket：
Each bracket determines the rigging position line of each bracket, then in case using the end mill face of casing top as reference for assembling
Body wall lining out, is positioned to each bracket position, finally carries out assembly welding, and tack welding uses manual welding, and weld seam is
Full penetration groove is welded, and relative position, the perpendicularity of bracket are controlled by production requirement.
The present invention uses rational welding sequence, and using balanced welding, the position big to amount of contraction is first welded, and is further ensured
Make the quality of component；Using rational antidote, reduce the welding deformation during segmental machining, while ensureing large scale
The form accuracy of component；Precision and overall dimension etc. in strict control process, it is ensured that it is field erected it is convenient and swift with
And installation quality, while reducing assembled workload.Concrete perfusion in box-type member, can play steel bending resistance and effect of contraction,
The shearing resistance and heat-absorbing action of concrete are played, enhancing structure antidetonation, fireproof resultant effect is played.
The present invention is typical super-high building structure component, the welding box-shaped component of heavy in section heavy wall and its system provided
The construction of other high building structures is can be generalized to as method.
The present invention provides a kind of welding box-shaped component of heavy in section heavy wall and preparation method thereof, compact conformation, further lifting
Manufacture craft, lifts product specification.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of the present invention；
Fig. 2 is the cross section structure diagram of the present invention；
Fig. 3 is A-A cross section structure diagrams in Fig. 2；
Fig. 4 is B-B cross section structure diagrams in Fig. 2；
Fig. 5 is C-C cross section structure diagrams in Fig. 2.
Embodiment
Below by embodiment, and with reference to accompanying drawing, technical scheme is described in further detail.
Embodiment 1：As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, a kind of welding box-shaped component of heavy in section heavy wall, including case
Type part 1, the side wall of described box part 1 is provided with bracket component, described box part 1 to be positioned by stiffener assembly；
Described bracket component include with the mutually fixed horizontal bracket 2 of box part 1, the top of described horizontal bracket 2 with
Between box part 1, the bottom of horizontal bracket 2 and oblique bracket 3 is respectively equipped between box part 1；
Described stiffener assembly includes diaphragm plate 4 and longitudinal stiffener 5, and described diaphragm plate 4 is interruption-like with box part 1
Fixed, described longitudinal stiffener 5 and some diaphragm plates 4 are into vertical distribution.
Bracket strength plate 6, the inwall of described box part 1, the upper part of horizontal bracket 2 are provided with described horizontal bracket 2
She You not equally distributed stress strengthening nail 7.
Described box part 1 is assembled by web 8 and flange plate 9.
A kind of welding box-shaped component of heavy in section heavy wall, is carried out according to the following steps：
(1), structural analysis：
Heavy wall welding box-shaped component in heavy in section includes member body, diaphragm plate, longitudinal stiffener, bracket, bracket strength plate；Structure
The cross section of part main body is rectangle, is formed by steel plate assembly welding；Diaphragm plate is placed in inside member body, and correspondence bracket is corresponding
Position, with solder design of the main body using groove welding and electroslag welding；Longitudinal stiffener is also placed in inside member body, has been optimized big
The stressing conditions of section structural member；Bracket is H types Member Welding in rectangular elements outer surface；
Bracket includes：Horizontal bracket (being used for girder steel connection), oblique bracket (being used for vertical supporting connection)；
Perfusion plain concrete in grout hole, the welding box-shaped member cavities of heavy in section heavy wall is needed out on diaphragm plate；
(2), structure member makes：
According to processing drawing requirement blanking cutting steel plate, steel plate is pressed into：Box-type member flange plate, web, diaphragm plate,
Longitudinal stiffener, horizontal bracket, oblique bracket and bracket strength plate；
Wing plate, the web of box-type member use the vertical blanking simultaneously of vertical bar cutting machine two sides, and numerical control is used to Irregular parts
Cutting machine carries out blanking, and bracket blanking needs technique to split H type brackets, and bracket flange plate distinguishes blanking with web；
(3), fabrication and installation moulding bed：
Component groups are filled with lower surface and just make face for loose tool, and loose tool, using being machined, is put down with component contact surface in load-bearing steel
Plan-position line, the diaphragm plate position line, the projection line of the bracket position line and the moulding bed position line of component flange plate are marked on platform, and
As benchmark, moulding bed is set；
(4), box-type member bottom wing listrium 1b is positioned：
Bottom wing listrium 1b is hung onto on moulding bed with purlin car, it is solid after the alignment end face tongue and groove position line, the projection line of center line
It is scheduled on moulding bed；
(5), longitudinal stiffener assembling：
Longitudinal stiffener is positioned on box-type member web 1c to be needed welding position, then to be assembled, assembly welding positioning
Weldering uses manual welding；
(6), box-type member web 1c is assembled：
It is vertical between two pieces of box-type member web 1c of bottom plate over-assemble, adjustment box-type member web 1c and bottom wing listrium 1b
Degree cannot be greater than 1mm；Then box-type member web 1c and bottom wing listrium 1b is subjected to positioning welding, positioning welding uses C02Gas
Protection weldering；When having stomata or crackle on tack welding, it is necessary to welded again after removing；
(7), the assembling of diaphragm plate：Diaphragm plate is inserted in the groove type component being made up of bottom wing listrium 1b and web 1c, it is right
Its accurate position line, diaphragm plate uses C0 with box-type member web 1c2Gas shielded is welded, and welds twice full penetration groove weld seam；
(8), concealment acceptance：
Check web 1c positions, web 1c and bottom wing listrium 1b perpendicularity, web 1c and bottom wing listrium 1b full penetration
Weld seam UT detections, weld appearance quality examination, debris in component；Acceptance(check) rear allows assembling top flange plate 1a；
(15), box-type member top flange plate 1a is assembled：
Top flange plate 1a is hung on, the perpendicularity for adjusting itself and web 1c cannot be greater than 1mm, then consolidate it with web 1c
Fixed, stationary positioned weldering equally uses C02Gas shielded is welded；Weld seam uses full penetration groove welding, because wall thickness is larger, takes pre- before weldering
Hot measure after heat and welding；" mouth " font is formed after the completion of welding；
(16), the assembling of diaphragm plate：
After box-type member assembling is finished, in diaphragm plate, dividing plate uses electroslag with top flange 1a and lower flange 1b junctions
Weldering；
(17), box-like body is corrected：
Box-like body welding after the completion of, preliminary surveying is carried out on horizontal moulding bed, at box-like body deformation as linearity,
Partly flat degree, side sway are corrected；Correction uses flame straightening, and its temperature value should be controlled between 750~900 DEG C, same
Position heating correction must not exceed 2 times, after correction, answer Slow cooling, not handy water quenching；
(18), box-like body end end mill processing：
Box-like body both ends of the surface are machined out using face miller, box-like body end face is hung down with casing center line
Directly, it is ensured that the geometrical length of casing, perpendicularity；
(19), the self-assembles of horizontal bracket, oblique bracket and bracket gusset：
Positioned, the edge of a wing of the H type bracket components obtained by blanking and web are assembled, assembling mode is adopted according to part drawing
Assembled with conventional H types component, stationary positioned weldering equally uses C02Gas shielded is welded；Weld seam uses full penetration groove welding；
(20), welding equipment bracket：
Each bracket determines the rigging position line of each bracket, then in case using the end mill face of casing top as reference for assembling
Body wall lining out, is positioned to each bracket position, finally carries out assembly welding, and tack welding uses manual welding, and weld seam is
Full penetration groove is welded, and relative position, the perpendicularity of bracket are controlled by production requirement.
Claims (4)
1. a kind of welding box-shaped component of heavy in section heavy wall, it is characterised in that：Including box part (1), the side of described box part (1)
Wall is provided with bracket component, described box part (1) and positioned by stiffener assembly；
Described bracket component includes and box part (1) mutually fixed horizontal bracket (2), the top of described horizontal bracket (2)
Between box part (1), the bottom of horizontal bracket (2) and oblique bracket (3) is respectively equipped between box part (1)；
Described stiffener assembly includes diaphragm plate (4) and longitudinal direction stiffener (5), and described diaphragm plate (4) is interruption-like and box
Part (1) is fixed, and described longitudinal stiffener (5) and some diaphragm plates (4) are into vertical distribution.
2. a kind of welding box-shaped component of heavy in section heavy wall according to claim 1, it is characterised in that：Described horizontal bracket
(2) bracket strength plate (6) is provided with, the inwall of described box part (1), the top of horizontal bracket (2) are respectively equipped with and is uniformly distributed
Stress strengthening nail (7).
3. a kind of welding box-shaped component of heavy in section heavy wall according to claim 1, it is characterised in that：Described box part
(1) it is assembled by web (8) and flange plate (9).
4. a kind of welding box-shaped component of heavy in section heavy wall according to claim 1 or 2 or 3, it is characterised in that by following step
It is rapid to carry out：
(1), structural analysis：
Heavy wall welding box-shaped component in heavy in section includes member body, diaphragm plate, longitudinal stiffener, bracket, bracket strength plate；Component master
The cross section of body is rectangle, is formed by steel plate assembly welding；Diaphragm plate is placed in inside member body, correspondence bracket corresponding positions
Put, with solder design of the main body using groove welding and electroslag welding；Longitudinal stiffener is also placed in inside member body, has optimized big cut
The stressing conditions of surface member；Bracket is H types Member Welding in rectangular elements outer surface；
Bracket includes：Horizontal bracket (being used for girder steel connection), oblique bracket (being used for vertical supporting connection)；
Perfusion plain concrete in grout hole, the welding box-shaped member cavities of heavy in section heavy wall is needed out on diaphragm plate；(2), structure member
Make：
According to processing drawing requirement blanking cutting steel plate, steel plate is pressed into：Box-type member flange plate, web, diaphragm plate, longitudinal direction
Stiffener, horizontal bracket, oblique bracket and bracket strength plate；
Wing plate, the web of box-type member use the vertical blanking simultaneously of vertical bar cutting machine two sides, and Numerical control cutting is used to Irregular parts
Machine carries out blanking, and bracket blanking needs technique to split H type brackets, and bracket flange plate distinguishes blanking with web；
(3), fabrication and installation moulding bed：
Component groups are filled with lower surface and just make face for loose tool, and loose tool is used with component contact surface and is machined, in load-bearing steel platform
Plan-position line, the diaphragm plate position line, the projection line of the bracket position line and the moulding bed position line of component flange plate are marked, and with this
On the basis of moulding bed is set；
(4), box-type member bottom wing listrium 1b is positioned：
Bottom wing listrium 1b is hung onto on moulding bed with purlin car, is fixed on after the alignment end face tongue and groove position line, the projection line of center line
On moulding bed；
(5), longitudinal stiffener assembling：
Longitudinal stiffener is positioned on box-type member web 1c to be needed welding position, then to be assembled, and assembly welding tack welding is adopted
Weld by hand；
(6), box-type member web 1c is assembled：
Perpendicularity between two pieces of box-type member web 1c of bottom plate over-assemble, adjustment box-type member web 1c and bottom wing listrium 1b is not
1mm must be more than；Then box-type member web 1c and bottom wing listrium 1b is subjected to positioning welding, positioning welding uses C02Gas shielded
Weldering；When having stomata or crackle on tack welding, it is necessary to welded again after removing；
(7), the assembling of diaphragm plate：Diaphragm plate is inserted in the groove type component being made up of bottom wing listrium 1b and web 1c, it is directed at
The position line, diaphragm plate uses C0 with box-type member web 1c2Gas shielded is welded, and welds twice full penetration groove weld seam；
(8), concealment acceptance：
Check web 1c positions, web 1c and bottom wing listrium 1b perpendicularity, web 1c and bottom wing listrium 1b full penetration weld
UT detections, weld appearance quality examination, debris in component；Acceptance(check) rear allows assembling top flange plate 1a；
(9), box-type member top flange plate 1a is assembled：
Top flange plate 1a is hung on, the perpendicularity for adjusting itself and web 1c cannot be greater than 1mm, then fix it with web 1c,
Stationary positioned weldering equally uses C02Gas shielded is welded；Weld seam uses full penetration groove welding, because wall thickness is larger, takes weld preheating
And hot measure after welding；" mouth " font is formed after the completion of welding；
(10), the assembling of diaphragm plate：
After box-type member assembling is finished, in diaphragm plate, dividing plate uses electroslag welding with top flange 1a and lower flange 1b junctions；
(11), box-like body is corrected：
After the completion of box-like body welding, preliminary surveying is carried out on horizontal moulding bed, to such as linearity, part at box-like body deformation
Flatness, side sway are corrected；Correction uses flame straightening, and its temperature value should be controlled between 750~900 DEG C, same position
Heating correction must not exceed 2 times, after correction, answer Slow cooling, not handy water quenching；
(12), box-like body end end mill processing：
Box-like body both ends of the surface are machined out using face miller, make box-like body end face and casing central axis, are protected
Demonstrate,prove geometrical length, the perpendicularity of casing；
(13), the self-assembles of horizontal bracket, oblique bracket and bracket gusset：
Positioned according to part drawing, the edge of a wing of the H type bracket components obtained by blanking and web are assembled, assembling mode is using normal
The H types component assembling of rule, stationary positioned weldering equally uses C02Gas shielded is welded；Weld seam uses full penetration groove welding；
(14), welding equipment bracket：
Each bracket determines the rigging position line of each bracket, then in box body wall using the end mill face of casing top as reference for assembling
Lining out, is positioned to each bracket position, finally carries out assembly welding, and tack welding uses manual welding, and weld seam is fine melt
Saturating groove weldering, relative position, the perpendicularity of bracket are controlled by production requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710428971.XA CN107035060A (en) | 2017-06-08 | 2017-06-08 | A kind of welding box-shaped component of heavy in section heavy wall and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710428971.XA CN107035060A (en) | 2017-06-08 | 2017-06-08 | A kind of welding box-shaped component of heavy in section heavy wall and preparation method thereof |
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| CN108747066A (en) * | 2018-06-11 | 2018-11-06 | 上海通用建筑工程有限公司 | A kind of manufacture welding method of box type rod piece |
| CN108951853A (en) * | 2018-05-31 | 2018-12-07 | 中建钢构江苏有限公司 | A kind of superthick variable cross-section multi-angle complex truss node production method |
| CN109128722A (en) * | 2018-10-31 | 2019-01-04 | 中国二十二冶集团有限公司 | The production method of assembled thin-walled square tube special-shape column component node |
| CN109128558A (en) * | 2018-10-22 | 2019-01-04 | 中建电力建设有限公司 | Welding method for ring crane corbel of nuclear power station |
| CN110802339A (en) * | 2019-11-08 | 2020-02-18 | 中铁二局集团有限公司 | Machining method for node of box-shaped steel structure shaped like Chinese character' mi |
| CN111088850A (en) * | 2019-12-31 | 2020-05-01 | 江苏沪宁钢机股份有限公司 | Horseshoe-shaped node and manufacturing method thereof |
| CN115464339A (en) * | 2022-09-15 | 2022-12-13 | 浙江中天恒筑钢构有限公司 | Ultra-high ultra-wide steel structure bearing platform component with longitudinal and transverse stiffening ribs and manufacturing method thereof |
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| CN108951853A (en) * | 2018-05-31 | 2018-12-07 | 中建钢构江苏有限公司 | A kind of superthick variable cross-section multi-angle complex truss node production method |
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| CN109128722B (en) * | 2018-10-31 | 2020-07-10 | 中国二十二冶集团有限公司 | Method for manufacturing node of assembled thin-wall square tube special-shaped column component |
| CN110802339A (en) * | 2019-11-08 | 2020-02-18 | 中铁二局集团有限公司 | Machining method for node of box-shaped steel structure shaped like Chinese character' mi |
| CN110802339B (en) * | 2019-11-08 | 2021-11-09 | 中铁二局集团有限公司 | Machining method for node of box-shaped steel structure shaped like Chinese character' mi |
| CN111088850A (en) * | 2019-12-31 | 2020-05-01 | 江苏沪宁钢机股份有限公司 | Horseshoe-shaped node and manufacturing method thereof |
| CN111088850B (en) * | 2019-12-31 | 2022-03-29 | 江苏沪宁钢机股份有限公司 | Horseshoe-shaped node and manufacturing method thereof |
| CN115464339A (en) * | 2022-09-15 | 2022-12-13 | 浙江中天恒筑钢构有限公司 | Ultra-high ultra-wide steel structure bearing platform component with longitudinal and transverse stiffening ribs and manufacturing method thereof |
| CN115464339B (en) * | 2022-09-15 | 2023-06-27 | 浙江中天恒筑钢构有限公司 | Super-high ultra-wide steel structure bearing platform component with longitudinal and transverse stiffening ribs and manufacturing method thereof |
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