CN109098454B - Hydraulic lifting construction method for high-altitude large-span curved roof - Google Patents

Hydraulic lifting construction method for high-altitude large-span curved roof Download PDF

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Publication number
CN109098454B
CN109098454B CN201810984320.3A CN201810984320A CN109098454B CN 109098454 B CN109098454 B CN 109098454B CN 201810984320 A CN201810984320 A CN 201810984320A CN 109098454 B CN109098454 B CN 109098454B
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China
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lifting
hydraulic
truss
chord
roof
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CN201810984320.3A
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CN109098454A (en
Inventor
刘晓东
王涛
杨兴明
楼元元
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Triumpher Steel Structure Group Co ltd
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Triumpher Steel Structure Group Co ltd
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14Conveying or assembling building elements
    • E04G21/16Tools or apparatus
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/342Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B7/00Roofs; Roof construction with regard to insulation
    • E04B7/08Vaulted roofs

Abstract

The invention relates to a hydraulic lifting construction method for a high-altitude large-span curved roof, which belongs to the technical field of structural engineering steel structures and comprises a curved roof, wherein the curved roof comprises a truss upper chord, a roof surface and a truss lower chord, a plurality of roof support columns are arranged on the lower end surface of the truss lower chord, a plurality of hydraulic lifting components are arranged among the roof support columns, a plurality of lifting frames which are arranged at equal intervals are uniformly arranged on the periphery of the curved roof, lifting platform frames are arranged on the lifting frames, a hydraulic lifter is arranged at the front end of each lifting platform frame, a steel structure lifting appliance which is in pin joint with lifting lugs on the truss upper chord is arranged below each hydraulic lifter, and steel stranded wires which are in movable sleeve joint with the hydraulic lifters are arranged between the hydraulic lifters and the. The construction method has the advantages of large lifting tonnage, short construction period, large operation space, reduction of high-altitude operation amount and safety risk, and solves the problems of large high-altitude bulk welding amount, large operation risk and unstable construction quality.

Description

Hydraulic lifting construction method for high-altitude large-span curved roof
Technical Field
The invention relates to the technical field of structural engineering steel structures, in particular to a hydraulic lifting construction method for a high-altitude large-span curved roof.
Background
With the development of the steel structure industry, various large-span and large-space building designs are fearful, such as: airports, railway stations, exhibition centers, stadiums, exhibition halls and the like bring new opportunities and challenges to the installation of steel structure engineering. However, the construction of the steel structure of the ultra-large span steel roof has the problem that large equipment cannot be used for hoisting or uneconomical engineering can not be used for hoisting by adopting the large equipment, and the traditional installation technology is difficult to meet the development requirements of the current steel structure industry due to the large overhead bulk welding quantity, the long period, the large assembling difficulty of space components, the frequent use of the large hoisting equipment and the large operation risk of the complex space truss structure.
Disclosure of Invention
The invention mainly solves the defects of long construction period, large high-altitude bulk welding amount, large operation risk and frequent use of large-scale hoisting equipment in the prior art, and provides a hydraulic lifting construction method for a high-altitude large-span curved roof.
The technical problem of the invention is mainly solved by the following technical scheme:
a hydraulic lifting device for a high-altitude large-span curved roof comprises a curved roof, wherein the curved roof comprises a truss upper chord, the upper end of the truss upper chord is provided with a roof surface in filling type welding with the truss upper chord, the bottom end of the truss upper chord is provided with a truss lower chord in embedded type welding with the truss upper chord, the lower end surface of the truss lower chord is provided with a plurality of roof supporting columns, the side surfaces of the roof supporting columns are provided with a hydraulic upright column vehicle in lug plate type screwing connection, a plurality of hydraulic lifting components which are fixed with the lower end surface of the truss lower chord in a lifting way are arranged among the plurality of roof supporting columns, the periphery of the curved roof is uniformly provided with a plurality of lifting frames which are arranged at equal intervals, a plurality of lifting platforms which are communicated and fixed with the lifting frames are arranged on the lifting frames, the front ends of the lifting platforms are provided with hydraulic lifters in embedded type with the lifting platforms, steel structure lifting appliances in pin joint with the truss upper chord are arranged below the hydraulic lifters, and a steel strand movably sleeved with the hydraulic lifter is arranged between the hydraulic lifter and the steel structure lifting appliance.
The curved roof is layered, welding processing work of the truss upper chord, the truss lower chord and the roof support column is synchronously completed on the ground, and then a plurality of hydraulic lifters are connected with the steel structure lifting appliance through steel strands, so that the effect of integrally lifting the truss upper chord is achieved. And the hydraulic lifter adopts a YS-SJ type hydraulic lifter. The welding work of the truss upper chord and the roof surface is finished at the most appropriate height of a welder, and the stability of the welding quality is ensured. After the welding work of the upper truss chord and the roof surface is finished, the lifting overall height meets the requirement that the lower truss chord enters an installation site to finish the fixing and lifting of the steel structure lifting appliance of the lower truss chord. And at the moment, the hydraulic lifting assembly is placed at an appointed position to support the lower truss chord, and the butt joint work of the lower truss chord and the upper truss chord is completed through the lifting adjustment of the hydraulic lifting assembly and the lower truss chord. Adopt hydraulic pressure column car to transport the room lid support column to the mounted position and erect and support the room lid support column and accomplish final weldment work, guarantee the support straightness that hangs down of room lid support column.
Preferably, the hydraulic lifting assembly comprises a plurality of hydraulic supporting oil cylinders, oil cylinder bases are arranged on the lower end faces of the hydraulic supporting oil cylinders, guardrail working platforms are arranged on the upper end faces of the hydraulic supporting oil cylinders, and a plurality of hydraulic adjusting oil cylinders which are fixedly sleeved with the lower end faces of the lower chords of the truss are uniformly arranged in the guardrail working platforms.
The hydraulic adjusting oil cylinder plays a role in fixing and supporting the supporting rods with different height dimensions of the lower chord of the truss, the height between the guardrail working platform and the lower chord of the truss is adjusted, and a welder can complete welding conveniently. The guardrail work platform provides a safe welding work area. The hydraulic support oil cylinder ensures the lifting of the guardrail working platform and the support effect on the whole structure.
Preferably, the hydraulic lifting construction method for the high-altitude large-span curved roof comprises the following operation steps:
the method comprises the following steps: and the welding work of independent units of a plurality of roof supporting columns, truss upper chords and truss lower chords is completed by synchronous operation on the bottom surface, and meanwhile, a lifting frame and a lifting platform frame are built.
Step two: installing a hydraulic lifter on the lifting platform frame, wherein the hydraulic lifter is connected and fixed with the steel structure lifting appliance by adopting a steel strand, the steel structure lifting appliance is hoisted and fixed with the upper chord of the truss, and the hydraulic lifter is lifted to the upper chord of the truss by about 150-200 mm and then is suspended; and after confirming that hydraulic synchronous lifting is not abnormal, lifting the truss upper chord to 1.2-1.5 m height through the hydraulic lifter, completing the welding work of the roof surface and the truss upper chord, and reserving the lifting position of the steel structure lifting appliance and the truss upper chord.
Step three: after confirming that hydraulic synchronous lifting is abnormal, lifting the upper chord of the truss to the height of 16-18 meters through a hydraulic lifter, lifting the lower chord of the truss to the position below the upper chord of the truss through a plurality of hydraulic lifters, adding a plurality of hydraulic lifting assemblies below the lower chord of the truss and carrying out alignment adjustment with the upper chord of the truss, completing butt welding construction of the lower chord of the truss and the upper chord of the truss, separating the lower chord of the truss from the hydraulic lifter after completing, and keeping a fixed structure of the hydraulic lifting assemblies and the lower chord of the truss.
Step four: and after the lifting speed of the hydraulic lifter is checked to be consistent with that of the hydraulic lifting assembly, synchronously lifting the upper chord of the truss by the hydraulic lifter and lifting the lower chord of the truss by the hydraulic lifting assembly to reach the specified height of 26-30 m, and conveying the roof support column to a specified area by using a hydraulic upright column vehicle and erecting to complete the welding and fixing of the roof support column and the curved roof.
Step five: the hydraulic lifting assemblies keep an oil pressure supporting state, the steel structure lifting appliance is separated from the upper chord of the truss, and the final roof surface welding work of the curved roof is completed through the lifting platform frame.
Step six: after the construction of the integral high-altitude large-span curved roof is completed, firstly, the hydraulic adjusting oil cylinder and the lower chord of the truss are loosened and synchronously reduced by 5 centimeters, and the state is kept for 3 hours; and then the hydraulic adjusting oil cylinder is completely contracted, and meanwhile, the hydraulic supporting oil cylinder returns to the initial state and is transported away.
Preferably, when the hydraulic lifter lifts the upper chord of the truss, the synchronous position control between each point of the lifting point is realized, and the synchronous error of adjacent points is less than 10 mm.
Preferably, the lifting range of a hydraulic adjusting oil cylinder on the hydraulic lifting assembly is 1.2-2 meters, and the lifting speed is 0.2-0.3 meters per minute; the lifting range of the hydraulic support oil cylinder is 14-28 meters, and the lifting speed is 8-12 meters per hour.
Preferably, the synchronous error of the lifting adjacent points of the hydraulic support oil cylinder is less than 5 mm.
Preferably, the placement position of the hydraulic lifting assembly is adjacent to the installation position of each roof support column, and the distance between the hydraulic lifting assembly and each roof support column is 5-10 cm.
The invention can achieve the following effects:
the invention provides a hydraulic lifting construction method for a high-altitude large-span curved roof, which has the advantages of large lifting tonnage, short construction period, large operation space, reduction of high-altitude operation amount and safety risk and solves the problems of large high-altitude bulk welding amount, large operation risk and unstable construction quality compared with the prior art.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the carrying structure of the roof support post of the present invention.
Fig. 3 is a schematic structural view of the hydraulic lift assembly of the present invention.
In the figure: the device comprises a lifting frame 1, a lifting platform frame 2, a hydraulic lifter 3, a steel strand 4, a curved roof 5, a hydraulic lifting assembly 6, a steel structure lifting appliance 7, a roof support column 8, a hydraulic upright column vehicle 9, a hydraulic adjusting oil cylinder 10, a guardrail working platform 11, a hydraulic support oil cylinder 12, an oil cylinder base 13, a roof surface 14, a truss upper chord 15 and a truss lower chord 16.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b): as shown in fig. 1, 2 and 3, the high-altitude large-span curved roof hydraulic lifting device comprises a curved roof 5, wherein the curved roof 5 comprises a truss upper chord 15, a roof surface 14 which is in filling welding with the truss upper chord 15 is arranged at the upper end of the truss upper chord 15, a truss lower chord 16 which is in embedded welding with the truss upper chord 15 is arranged at the bottom end of the truss upper chord 15, a plurality of roof support columns 8 are arranged on the lower end surface of the truss lower chord 16, and hydraulic upright column vehicles 9 which are in lug plate screwing connection with the side surfaces of the roof support columns 8 are arranged. A plurality of hydraulic lifting assemblies 6 which are fixedly lifted with the lower end face of the truss lower chord 16 are arranged between the plurality of roof supporting columns 8, each hydraulic lifting assembly 6 comprises a plurality of hydraulic supporting oil cylinders 12, oil cylinder bases 13 are arranged on the lower end faces of the plurality of hydraulic supporting oil cylinders 12, a guardrail working platform 11 is arranged on the upper end face of each hydraulic supporting oil cylinder 12, and a plurality of hydraulic adjusting oil cylinders 10 which are fixedly sleeved with the lower end face of the truss lower chord 16 are uniformly arranged in the guardrail working platform 11. The periphery of curved surface roof 5 evenly is equipped with a plurality of equidistant lift stands 1 of arranging, be equipped with on a plurality of lift stands 1 and be linked together fixed lifting platform frame 2 with a plurality of lift stands 1, 2 front ends of lifting platform frame are equipped with the hydraulic lifting mechanism 3 with lifting platform frame 2 scarf joint mutually, the hydraulic lifting mechanism 3 below is equipped with the steel construction hoist 7 with 15 looks lifting lug formula pin joints on the truss, be equipped with between hydraulic lifting mechanism 3 and the steel construction hoist 7 with the movable steel strand wires 4 that cup joint mutually of hydraulic lifting mechanism 3.
The hydraulic lifting construction method of the high-altitude large-span curved roof comprises the following operation steps:
the method comprises the following steps: and (3) synchronously working on the bottom surface to complete the welding work of a plurality of independent units of the roof supporting columns 8, the truss upper chords 15 and the truss lower chords 16, and simultaneously building the lifting frame 1 and the lifting platform frame 2.
Step two: a hydraulic lifter 3 is installed on the lifting platform frame 2, the hydraulic lifter 3 is connected and fixed with a steel structure lifting appliance 7 by adopting a steel strand 4, the lifting and fixing between the steel structure lifting appliance 7 and the truss upper chord 15 are completed, and the hydraulic lifter 3 is lifted for about 180mm from the truss upper chord and then is suspended for lifting; and after confirming that the hydraulic synchronous lifting is not abnormal, lifting the upper chord 15 of the truss to 1.3 m height by the hydraulic lifter 3, and realizing position synchronous control between each point of a lifting point when the hydraulic lifter 3 lifts the upper chord 15 of the truss, wherein the synchronous error of adjacent points is less than 10 mm. And finishing the welding work of the roof surface 14 and the truss upper chord 15, and reserving the hoisting positions of the steel structure lifting appliance 7 and the truss upper chord 15.
Step three: after confirming that hydraulic synchronous lifting is not abnormal, lifting the upper truss chord 15-16 m in height through the hydraulic lifter 3, lifting the lower truss chord 16 below the upper truss chord 15 through the plurality of hydraulic lifters 3, adding the plurality of hydraulic lifting assemblies 6 below the lower truss chord 16 at the moment, aligning and adjusting the upper truss chord 15, completing butt welding construction of the lower truss chord 16 and the upper truss chord 15, separating the lower truss chord 16 from the hydraulic lifter 3 after completion, and keeping the plurality of hydraulic lifting assemblies 6 in a fixed structure with the lower truss chord 16.
Step four: after the lifting speed of the hydraulic lifter 3 is checked to be consistent with that of the hydraulic lifting assembly 6, the hydraulic lifter 3 lifts the upper chord 15 of the truss and the hydraulic lifting assembly 6 lifts the lower chord 16 of the truss to reach the specified height of 28 meters synchronously, the lifting speed of the hydraulic adjusting oil cylinder 10 on the hydraulic lifting assembly 6 is up to 2 meters at most, and the lifting speed is 0.25 meter per minute; the lifting speed of the hydraulic support cylinder 12 is up to 28 meters, and the lifting speed is 10 meters per hour. The synchronous error of the lifting adjacent points of the hydraulic support oil cylinder 12 is less than 5 mm. At the moment, the hydraulic upright post vehicle 9 is adopted to convey the roof support post 8 to the position adjacent to the hydraulic lifting assembly 6, and the distance between the roof support post and the hydraulic lifting assembly is 8 cm. After the roof support column 8 is in place, the hydraulic upright column vehicle 9 erects the roof support column 8 and completes the welding and fixing of the roof support column 8 and the curved roof 5.
Step five: the plurality of hydraulic lifting assemblies 6 keep an oil pressure supporting state, the steel structure lifting appliance 7 is separated from the truss upper chord 15, and the welding work of the final roof surface 14 of the curved roof 5 is completed.
Step six: after the construction of the integral high-altitude large-span curved roof is completed, firstly, the hydraulic adjusting oil cylinder 10 and the truss lower chord 16 are loosened and synchronously reduced by 5 centimeters, and the state is kept for 3 hours; the hydraulic adjusting cylinder 10 is completely contracted, and the hydraulic support cylinder 12 is returned to the original state and carried away.
In conclusion, the hydraulic lifting construction method for the high-altitude large-span curved roof has the advantages of large lifting tonnage, short construction period, large operation space, reduction of high-altitude operation amount and safety risk, and solves the problems of large high-altitude bulk welding amount, large operation risk and unstable construction quality. The construction quality and the structural integrity of the curved roof are improved.
The above description is only an embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any changes or modifications within the scope of the present invention by those skilled in the art are covered by the present invention.

Claims (5)

1. The utility model provides a high altitude large-span curved surface roof hydraulic lifting construction method, includes curved surface roof (5), its characterized in that: the curved roof (5) comprises a truss upper chord (15), the upper end of the truss upper chord (15) is provided with a roof surface (14) in filling type welding with the truss upper chord (15), the bottom end of the truss upper chord (15) is provided with a truss lower chord (16) in embedded type welding with the truss upper chord (15), the lower end surface of the truss lower chord (16) is provided with a plurality of roof supporting columns (8), the side surface of each roof supporting column (8) is provided with a hydraulic upright column vehicle (9) in lug plate type screwing connection, a plurality of hydraulic lifting components (6) which are fixed with the lower end surface of the truss lower chord (16) in a lifting way are arranged among the plurality of roof supporting columns (8), the periphery of the curved roof (5) is uniformly provided with a plurality of lifting frames (1) which are arranged at equal intervals, and lifting platform frames (2) which are communicated and fixed with the plurality of lifting frames (1) are arranged on the plurality of lifting frames (1), the front end of the lifting platform frame (2) is provided with a hydraulic lifter (3) which is embedded with the lifting platform frame (2), a steel structure lifting appliance (7) which is connected with the truss upper chord (15) in a lifting lug type pin joint mode is arranged below the hydraulic lifter (3), and a steel strand (4) which is movably sleeved with the hydraulic lifter (3) is arranged between the hydraulic lifter (3) and the steel structure lifting appliance (7); the hydraulic lifting assembly (6) comprises a plurality of hydraulic supporting oil cylinders (12), oil cylinder bases (13) are arranged on the lower end faces of the hydraulic supporting oil cylinders (12), guardrail working platforms (11) are arranged on the upper end faces of the hydraulic supporting oil cylinders (12), and a plurality of hydraulic adjusting oil cylinders (10) which are fixedly sleeved with the lower end face of the truss lower chord (16) are uniformly arranged in the guardrail working platforms (11);
the hydraulic lifting construction method for the high-altitude large-span curved roof comprises the following operation steps:
the method comprises the following steps: synchronously working on the bottom surface to complete the welding work of independent units of a plurality of roof supporting columns (8), truss upper chords (15) and truss lower chords (16), and simultaneously building a lifting frame (1) and a lifting platform frame (2);
step two: the method comprises the following steps that a hydraulic lifter (3) is installed on a lifting platform frame (2), the hydraulic lifter (3) is connected and fixed with a steel structure lifting appliance (7) through a steel strand (4), the steel structure lifting appliance (7) and a truss upper chord (15) are hoisted and fixed, the hydraulic lifter (3) lifts the truss upper chord (15) by 150-200 mm, and then lifting is suspended; after confirming that hydraulic synchronous lifting is not abnormal, lifting the truss upper chord (15) to 1.2-1.5 m height by the hydraulic lifter (3), completing the welding work of the roof surface (14) and the truss upper chord (15), and reserving the hoisting positions of the steel structure lifting appliance (7) and the truss upper chord (15);
step three: after confirming that hydraulic synchronous lifting is abnormal, lifting the truss upper chord (15) to 16-18 m in height through the hydraulic lifter (3), lifting the truss lower chord (16) to the position below the truss upper chord (15) through the plurality of hydraulic lifters (3), at the moment, adding the plurality of hydraulic lifting assemblies (6) below the truss lower chord (16) and aligning and adjusting the hydraulic lifting assemblies with the truss upper chord (15), at the moment, completing butt welding construction of the truss lower chord (16) and the truss upper chord (15), separating the truss lower chord (16) from the hydraulic lifter (3) after completion, and keeping the plurality of hydraulic lifting assemblies (6) in a fixed structure with the truss lower chord (16);
step four: after the lifting speed of the hydraulic lifter (3) is checked to be consistent with that of the hydraulic lifting assembly (6), the hydraulic lifter (3) lifts the upper chord (15) of the truss and the hydraulic lifting assembly (6) lifts the lower chord (16) of the truss to reach the specified height of 26-30 m, and at the moment, a hydraulic upright post vehicle (9) is adopted to convey the roof support post (8) to a specified area and erect the roof support post to complete the welding and fixing of the roof support post (8) and the curved roof (5);
step five: the plurality of hydraulic lifting components (6) keep an oil pressure supporting state, and the steel structure lifting appliance (7) is separated from the truss upper chord (15) to complete the welding work of the final roof surface (14) of the curved roof (5);
step six: after the construction of the integral high-altitude large-span curved roof is completed, firstly, the hydraulic adjusting oil cylinder (10) and the truss lower chord (16) are loosened and synchronously reduced by 5 cm, and the state is kept for 3 hours; and then the hydraulic adjusting oil cylinder (10) is completely contracted, and simultaneously the hydraulic supporting oil cylinder (12) returns to the initial state and is transported away.
2. The hydraulic lifting construction method for the high-altitude large-span curved roof as claimed in claim 1, wherein: when the hydraulic lifter (3) lifts the upper chord (15) of the truss, the synchronous position control between each point of the lifting point is realized, and the synchronous error of adjacent points is less than 10 mm.
3. The hydraulic lifting construction method for the high-altitude large-span curved roof as claimed in claim 1, wherein: the lifting range of a hydraulic adjusting oil cylinder (10) on the hydraulic lifting assembly (6) is 1.2-2 meters, and the lifting speed is 0.2-0.3 meters per minute; the lifting range of the hydraulic support oil cylinder (12) is 14-28 meters, and the lifting speed is 8-12 meters per hour.
4. The hydraulic lifting construction method for the high-altitude large-span curved roof as claimed in claim 3, wherein: the synchronous error of the lifting adjacent points of the hydraulic support oil cylinder (12) is less than 5 mm.
5. The hydraulic lifting construction method for the high-altitude large-span curved roof as claimed in claim 1, wherein: the placement position of the hydraulic lifting assembly (6) is adjacent to the installation position of each roof support column (8), and the distance between the hydraulic lifting assembly and the roof support columns is 5-10 cm.
CN201810984320.3A 2018-08-28 2018-08-28 Hydraulic lifting construction method for high-altitude large-span curved roof Active CN109098454B (en)

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CN112252482B (en) * 2020-12-07 2021-03-09 中铁建设集团华北工程有限公司 Hydraulic lifting device for steel structure roof and construction method thereof

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CN101580214A (en) * 2009-05-22 2009-11-18 中冶京唐建设有限公司 Hydraulic lifting method for large-scale equipment
CN102155096B (en) * 2011-03-02 2012-08-08 攀钢集团工程技术有限公司 Enormous-span steel tube house truss assembling construction method
CN103615118A (en) * 2013-11-28 2014-03-05 湖北辉创重型工程有限公司 Lifting installation method of large arch structure
CN104213714B (en) * 2014-08-27 2016-03-09 中国建筑第二工程局有限公司 A kind of lifting suspension centre ruggedized construction of ultra-large type roof truss and construction method for hanging
CN205367459U (en) * 2016-03-15 2016-07-06 中建八局第一建设有限公司 Sharing of many hoisting points of bridge truss steel construction promotes hoist
CN108179816B (en) * 2017-12-15 2019-12-20 浙江精工钢结构集团有限公司 Deviation lifting sliding device and method

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Denomination of invention: Hydraulic lifting construction method of high-altitude large-span curved roof

Effective date of registration: 20211202

Granted publication date: 20201117

Pledgee: Zhejiang Xiaoshan rural commercial bank Limited by Share Ltd. Jude branch

Pledgor: TRIUMPHER STEEL STRUCTURE GROUP Co.,Ltd.

Registration number: Y2021330002426