CN215668970U - Simple sightseeing platform additionally arranged on existing truss girder - Google Patents
Simple sightseeing platform additionally arranged on existing truss girder Download PDFInfo
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- CN215668970U CN215668970U CN202121955443.8U CN202121955443U CN215668970U CN 215668970 U CN215668970 U CN 215668970U CN 202121955443 U CN202121955443 U CN 202121955443U CN 215668970 U CN215668970 U CN 215668970U
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Abstract
The utility model provides a simple sightseeing platform additionally arranged on an existing truss girder. The simple sightseeing platform provided by the utility model is additionally arranged on the existing steel truss bridge, so that the movable space for tourists to view the scenery on the bridge is enlarged, and the tourists can view the local scenery more comprehensively at different angles; moreover, the platform is simple in structure and convenient to install, mechanical installation is not needed in the construction process, and all installation procedures can be completed through manual operation; meanwhile, the sightseeing platform is fixedly connected to the existing lower cross beam through the fixing mode that the steel adhesive on the fixing seat is combined with the lower connecting bolt, so that the stress influence of the platform on the related rod pieces of the steel truss bridge is minimized while the installation is stable, the structural safety of the platform and the personal safety of tourists are guaranteed, and the later-stage dismantling is facilitated.
Description
Technical Field
The utility model relates to the field of bridge design, in particular to a sightseeing platform additionally arranged on an existing truss girder.
Background
Truss bridges refer to bridges with trusses as the main load-bearing members of the superstructure and generally consist of a main bridge frame, upper and lower horizontal longitudinal bracing systems, portal frames, intermediate cross-bracing frames and deck systems. In the truss, the chord members are members forming the periphery of the truss, and comprise an upper chord member and a lower chord member, wherein the members connecting the upper chord member and the lower chord member are web members, and are divided into inclined members and vertical members according to the directions of the web members. The planes of the chord members and the web members are called the main truss planes. The bridge height of the large-span bridge frame is changed along the span direction to form a curved chord truss; the medium and small spans adopt constant truss height, namely a flat-chord truss or a straight-chord truss.
With the development of tourism industry, some dangerous natural landscapes such as deep mountains and canyons, big rivers and the like become hot places for tourists to travel, and steel truss bridges with high safety factors are mostly adopted as carriers of high-speed traffic or passages for tourists to view due to the dangerous terrain. However, since many rods are erected above the steel truss bridge, the sight of visitors viewing scenery on the bridge is usually obstructed, thereby affecting the experience of playing. At present, a simple sightseeing platform is additionally arranged on the steel truss bridge at the place, so that visitors can have larger space to view scenery at various angles on the truss bridge. However, the sightseeing platform is complex in mechanical structure, difficult to construct on site and difficult to install; and because the existing sightseeing platform is directly welded or bolted on the steel truss girder, the steel truss girder generates uncontrollable risks due to welding shrinkage deformation or drilling and other factors after long-time use.
In view of this, it is necessary to provide a simple sightseeing platform additionally arranged on an existing truss girder to solve the problems that the truss of the steel truss bridge obstructs the sight of visitors, the experience of the visitors is influenced, and the construction difficulty of the existing sightseeing platform is large due to the complex structure.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a simple sightseeing platform additionally arranged on an existing truss girder, and aims to solve the problems that in the prior art, the truss of a steel truss bridge obstructs the sight of visitors, the experience of the visitors is influenced, the construction difficulty of the existing sightseeing platform is large due to the complex structure, and the like.
In order to achieve the purpose, the utility model provides a simple sightseeing platform additionally arranged on an existing truss girder, wherein the sightseeing platform is erected on an existing lower cross beam, and the existing lower cross beam is positioned between the truss girder and a pedestrian passageway and is connected with the truss girder and the pedestrian passageway; the sightseeing platform comprises a platform beam body, a glass panel arranged above the platform beam body and a fixed seat used for connecting the platform beam body and the existing lower cross beam; wherein the platform beam body comprises at least two I-shaped longitudinal beams arranged along the length direction of the bridge, at least three I-shaped cross beams connected between the I-shaped longitudinal beams and a plurality of I-shaped secondary cross beams,
the at least two I-shaped secondary cross beams are connected with the two adjacent I-shaped longitudinal beams and are uniformly arranged between the two adjacent I-shaped cross beams;
the position, corresponding to the position connected with the I-shaped longitudinal beam, of each I-shaped cross beam is fixedly provided with one fixing seat; the fixing seat is fixedly connected with the I-shaped cross beam and the I-shaped longitudinal beam at the same time, wherein,
the fixed seat comprises a connecting piece, a bottom edge steel plate and at least two pairs of lower connecting bolts; the connecting piece connect in the worker shape crossbeam with between the existing bottom end rail, the connecting piece includes connecting steel plate, connecting steel plate and fixed connection down go up connecting steel plate with connecting steel plate's connecting portion down, go up connecting steel plate with worker shape crossbeam with worker shape longeron fixed connection, down connecting steel plate with the bottom edge steel sheet passes through connecting bolt's cooperation centre gripping under in on the existing bottom end rail.
Preferably, the I-shaped longitudinal beam comprises a plurality of longitudinal beam sections spliced end to end along the length direction of the bridge; every longeron section includes two that first upper flange board, first web and first lower flange board are adjacent two of longeron section first upper flange board corresponds welded fastening in bridge length direction, two adjacent longeron section two first web adopts bolt fixed connection in bridge length direction, two adjacent longeron section two first lower flange board adopts bolt fixed connection in bridge length direction.
Preferably, the I-shaped cross beam comprises a second upper flange plate, a second web plate and a second lower flange plate, the second upper flange plate and the I-shaped longitudinal beam are welded and fixed in the width direction of the bridge, the second lower flange plate and the I-shaped longitudinal beam are welded and fixed in the width direction of the bridge, and the second web plate and the I-shaped longitudinal beam are fixedly connected in the width direction of the bridge through bolts.
Preferably, the i-shaped secondary cross beam comprises a third upper flange plate and a third web plate, the third upper flange plate and the i-shaped longitudinal beam are fixed in a welding mode in the width direction of the bridge, and the third web plate and the i-shaped longitudinal beam are fixedly connected in the width direction of the bridge through bolts.
Preferably, the glass panel is of a double-layer toughened glass structure.
Preferably, the fixing seat further comprises a leveling steel plate and a stiffening plate, the leveling steel plate pad is arranged between the upper connecting steel plate and the platform beam body, and the stiffening plate is fixedly arranged on the side face, far away from the connecting piece, of the bottom edge steel plate.
Preferably, the fixing seat further comprises at least two pairs of upper connecting bolts, and the upper connecting steel plate is fixedly connected with the I-shaped cross beam and the I-shaped longitudinal beam through the matching of the upper connecting bolts.
Preferably, the two opposite side surfaces of the lower connecting steel plate and the bottom edge steel plate are coated with steel adhesive.
Compared with the prior art, the simple sightseeing platform additionally arranged on the existing truss girder has the following beneficial effects:
firstly, the sightseeing platform is additionally arranged on the existing steel truss bridge, so that the movable space for tourists to view local scenery on the bridge is enlarged, the tourists can view the local scenery more comprehensively at different angles, and the viewing experience of the tourists on the local scenery is enhanced;
secondly, the platform is simple in structure, light in structure weight, simple and convenient in construction method and convenient to install, mechanical installation is not needed in the construction process, and all installation procedures can be completed through manual operation;
thirdly, the platform is connected to the existing lower cross beam of the steel truss bridge through the fixed seat in the installation process, the stress influence on the related rod pieces of the truss bridge is reduced to the minimum through the bonded steel glue and the existing lower cross beam, and the fixed seat is fixed on the existing lower cross beam through a dual connection mode of bonding the bonded steel glue and fixing the bolt, so that the structural safety is guaranteed, and later-period dismantling is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a top view of a simplified sightseeing platform of the present invention added to an existing truss beam;
FIG. 2 is a bottom view of a simplified sightseeing platform of the present invention added to an existing truss beam;
FIG. 3 is a cross-sectional view A-A of a simplified sightseeing platform of the present invention added to an existing truss girder;
fig. 4 is a B-B sectional view of a simplified sightseeing platform of the present invention added to an existing truss girder.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Existing |
200 | |
| 300 | |
400 | |
| 500 | Fixed |
510 | Connecting |
| 511 | Upper connecting |
512 | Lower connecting |
| 513 | Connecting |
520 | Bottom |
| 530 | Lower connecting |
540 | |
| 550 | |
560 | Upper connecting |
| 570 | Steel adhesive |
The implementation, functional features and advantages of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that all the directional indicators (such as the upper and lower … …) in the embodiment of the present invention are only used to explain the relative position relationship, movement, etc. of the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Moreover, the technical solutions in the embodiments of the present invention may be combined with each other, but it is necessary to be able to be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
As shown in fig. 1 to 4, the present invention provides a simple sightseeing platform additionally installed on an existing truss girder, wherein the sightseeing platform (not shown) is erected on an existing lower beam 100, and the existing lower beam 100 is located between the truss girder (not shown) and a pedestrian passageway 200 and connects the truss girder and the pedestrian passageway 200; the sightseeing platform comprises a platform beam body 300, a glass panel 400 arranged above the platform beam body 300 and a fixed seat 500 used for connecting the platform beam body 300 and the existing lower cross beam 100; wherein, the platform girder 300 comprises at least two I-shaped longitudinal girders 310 arranged along the length direction of the bridge, at least three I-shaped cross girders 320 connected between the I-shaped longitudinal girders 310 and a plurality of I-shaped secondary cross girders 330,
the at least two I-shaped secondary cross beams 330 are connected with the two adjacent I-shaped longitudinal beams 310 and are uniformly arranged between the two adjacent I-shaped cross beams 310;
a fixing seat 500 is fixedly arranged at the position, corresponding to the position of the I-shaped longitudinal beam 310, of each I-shaped cross beam 320; the fixing base 500 is fixedly connected with the i-shaped cross beam 320 and the i-shaped longitudinal beam 310 at the same time, wherein,
the fixing base 500 comprises a connecting piece 510, a bottom edge steel plate 520 and at least two pairs of lower connecting bolts 530; the connecting piece 510 is connected between the I-shaped cross beam 320 and the existing lower cross beam 100, the connecting piece 510 comprises an upper connecting steel plate 511, a lower connecting steel plate 512 and a connecting part 513 fixedly connected with the upper connecting steel plate 511 and the lower connecting steel plate 512, the upper connecting steel plate 511 is fixedly connected with the I-shaped cross beam 320 and the I-shaped longitudinal beam 310, and the lower connecting steel plate 512 and the bottom edge steel plate 520 are clamped on the existing lower cross beam 100 through the matching of a lower connecting bolt 530.
The simple sightseeing platform is additionally arranged on the existing truss girder 100, the platform girder body 300 is erected on the existing truss girder 100 through the fixed seat 500, and the transparent glass panel 400 is fixedly arranged above the platform girder body 300 to form a channel for tourists to walk, so that the tourists have larger movable space and better sight field; meanwhile, each part of the sightseeing platform is of a detachable structure, so that the subsequent parts are more convenient to maintain and replace while the sightseeing platform is convenient to transport and install, and the sightseeing platform is erected on the existing truss girder 100, so that resources are saved, the sightseeing platform has a good supporting structure, and the safety performance is higher.
Further, the i-shaped longitudinal beam 310 includes a plurality of longitudinal beam segments (not shown) spliced end to end along the length direction of the bridge; each longitudinal beam segment comprises a first upper flange plate (not marked in the figure), a first web plate (not marked in the figure) and a first lower flange plate (not marked in the figure), two adjacent longitudinal beam segments are welded and fixed on the first upper flange plates in the length direction of the bridge correspondingly, two adjacent longitudinal beam segments are fixedly connected through bolts in the length direction of the bridge, and two adjacent longitudinal beam segments are fixedly connected through bolts in the length direction of the bridge. Specifically, when the sightseeing platform is installed, the first upper flange plate, the first web plate and the first lower flange plate of each longitudinal beam segment are transported to a specific place, and then the integral assembly of the I-shaped longitudinal beam 310 is carried out, so that the transportation difficulty caused by the volume problem in the longitudinal beam transportation process is saved; meanwhile, in order to reduce the welding workload of field installation, two first webs in two adjacent longitudinal beam sections are connected by bolts in the length direction of the bridge, two first lower flange plates in two adjacent longitudinal beam sections are also connected by bolts in the length direction of the bridge, but in order to ensure the flatness of the top surface of the I-shaped longitudinal beam, two first upper flange plates in two adjacent longitudinal beam sections are connected by welding in the length direction of the bridge. As a specific example, since the joint of each stringer segment is not firm at the middle part of the stringer segment, care should be taken to avoid the unfavorable stressed position of the stringer when segmenting the i-shaped stringer 310, so as to improve the service life of the sightseeing platform.
Further, the i-shaped cross beam 320 includes a second upper flange plate (not shown), a second web plate (not shown), and a second lower flange plate (not shown), the second upper flange plate and the i-shaped longitudinal beam 310 are welded and fixed in the width direction of the bridge, the second lower flange plate and the i-shaped longitudinal beam 310 are welded and fixed in the width direction of the bridge, and the second web plate and the i-shaped longitudinal beam 310 are fixedly connected in the width direction of the bridge by bolts. Specifically, the second upper flange plate is fixedly connected to the first upper flange plate of the i-shaped longitudinal beam 310, the second lower flange plate is fixedly connected to the first lower flange plate of the i-shaped longitudinal beam 310, and the second web plate is fixedly connected to the first web plate of the i-shaped longitudinal beam 310.
Further, the i-shaped secondary cross beam 330 includes a third upper flange plate (not shown) and a third web plate (not shown), the third upper flange plate and the i-shaped longitudinal beam 310 are fixed by welding in the width direction of the bridge, and the third web plate and the i-shaped longitudinal beam 310 are fixedly connected by bolts in the width direction of the bridge. Specifically, the third upper flange plate is fixedly connected to the first upper flange plate of the i-shaped longitudinal beam 310, and the third web plate is fixedly connected to the first web plate of the i-shaped longitudinal beam 310.
Further, the glass panel 400 has a double-layer tempered glass structure. Specifically, tempered glass is prestressed glass, and in order to improve the strength of the glass, a chemical or physical method is usually used to form compressive stress on the surface of the glass, and the glass firstly counteracts surface stress when bearing external force, so that the bearing capacity is improved, and the wind pressure resistance, the cold and summer heat resistance, the impact resistance and the like of the glass are enhanced; compared with common glass, the strength of the glass is improved by several times, the glass has good bending resistance, the bearing capacity of the glass greatly improves the brittleness of the glass, the rapid cooling and rapid heating resistance of the glass is improved by 3-5 times compared with the common glass, the glass can generally bear the temperature difference change of more than 250 ℃, and the glass has obvious effect on preventing thermal explosion.
Further, the fixing seat 500 further includes a leveling steel plate 540 and a stiffening plate 550, the leveling steel plate 540 is padded between the upper connecting steel plate 511 and the platform beam body 300, and the stiffening plate 550 is fixedly disposed on the side of the bottom edge steel plate 520 away from the connecting piece 510. Specifically, the leveling steel plate 540 is padded between the upper connecting steel plate 511 and the platform beam body 300, so that the platform beam body 300 is flatly connected to the existing lower cross beam 100; the stiffening plate 550 is disposed on the side of the bottom edge steel plate 520 away from the connecting member 510 to reinforce the bottom edge steel plate 520. As a specific embodiment, the stiffening plate 550 and the bottom edge steel plate 520 are fixed by welding, and the stiffening plate 550 and the bottom edge steel plate 520 are T-shaped in the bridge length direction.
Further, the fixing seat 500 further comprises at least two pairs of upper connecting bolts 560, and the upper connecting steel plate 511 is fixedly connected with the i-shaped cross beam 320 and the i-shaped longitudinal beam 310 through the matching of the upper connecting bolts 560. As a specific example, the connection between the upper connecting steel plate 511 of the fixing seat 500 and the i-shaped cross beam 320 and the i-shaped longitudinal beam 310 includes, but is not limited to, a bolt connection, for example, a welding connection, a rivet connection, and the like.
Preferably, the lower connecting steel plate 512 and the bottom edge steel plate 520 are coated with steel adhesives 570 on opposite sides. Specifically, the steel adhesive 570 can clamp the lower connecting steel plate 512 and the bottom edge steel plate 520 to the existing lower beam 100 before the lower connecting bolt 530 locks the lower connecting steel plate 512 and the bottom edge steel plate 520, so as to play a role in fixing the foundation for the installation behind the platform. It should be understood by those skilled in the art that the steel adhesive 570 is a special building structural adhesive, which has the characteristics of super-strong adhesive force, strong shearing force, aging resistance, good medium (acid, alkali and water) resistance, strong impact resistance, normal temperature curing, small shrinkage in the hardening process, no flow in construction, no volatile solvent, no toxicity, convenient construction and the like, can be constructed in a wider temperature range, has no precipitation, is almost suitable for all building base materials, and is specially used for bonding steel plates.
The utility model provides a construction method of a simple sightseeing platform additionally arranged on an existing truss girder, which comprises the following steps:
(1) assembling at least two I-shaped longitudinal beams 310, and determining the size of the I-shaped longitudinal beams 310;
(2) according to the size of the I-shaped longitudinal beam 310 along the length direction of the bridge, the connecting position of each I-shaped transverse beam 320 is determined, and the fixing seat 500 is fixedly installed on the existing lower transverse beam 100 corresponding to the connecting position of the I-shaped longitudinal beam 310 and the I-shaped transverse beam 320, wherein the fixing seat 500 is installed by the following steps:
firstly, the fixing seat 500 is preliminarily clamped on the existing lower cross beam 100 through the adhesive steel glue 570 on the two opposite side surfaces of the lower connecting steel plate 512 and the bottom edge steel plate 520, and then the lower connecting steel plate 512 and the bottom edge steel plate 520 are fixedly clamped on the existing lower cross beam 100 through screwing down the lower connecting bolt 560;
(3) assembling the I-shaped cross beam 320, connecting the I-shaped longitudinal beam 310 with the I-shaped cross beam 320, and fixedly connecting the I-shaped longitudinal beam 310 and the I-shaped cross beam 320 to corresponding upper connecting steel plates 311 by connecting methods such as upper connecting bolts 530 and the like, so that the I-shaped longitudinal beam 310 and the I-shaped cross beam 320 are fixedly connected to the existing lower cross beam 100;
(4) assembling the I-shaped secondary cross beam 330, and fixedly connecting the I-shaped secondary cross beam 330 with the I-shaped longitudinal beam 310;
(5) the glass panel 400 is fixedly laid on the platform girder 300.
In the above technical solutions, the above are only preferred embodiments of the present invention, and the technical scope of the present invention is not limited thereby, and all the technical concepts of the present invention include the claims of the present invention, which are directly or indirectly applied to other related technical fields by using the equivalent structural changes made in the content of the description and the drawings of the present invention.
Claims (8)
1. A simple sightseeing platform additionally arranged on an existing truss girder is characterized in that the sightseeing platform is erected on an existing lower cross beam, and the existing lower cross beam is located between the truss girder and a pedestrian passageway and is connected with the truss girder and the pedestrian passageway; the sightseeing platform comprises a platform beam body, a glass panel arranged above the platform beam body and a fixed seat used for connecting the platform beam body and the existing lower cross beam; wherein the platform beam body comprises at least two I-shaped longitudinal beams arranged along the length direction of the bridge, at least three I-shaped cross beams connected between the I-shaped longitudinal beams and a plurality of I-shaped secondary cross beams,
the at least two I-shaped secondary cross beams are connected with the two adjacent I-shaped longitudinal beams and are uniformly arranged between the two adjacent I-shaped cross beams;
the position, corresponding to the position connected with the I-shaped longitudinal beam, of each I-shaped cross beam is fixedly provided with one fixing seat; the fixing seat is fixedly connected with the I-shaped cross beam and the I-shaped longitudinal beam at the same time, wherein,
the fixed seat comprises a connecting piece, a bottom edge steel plate and at least two pairs of lower connecting bolts; the connecting piece connect in the worker shape crossbeam with between the existing bottom end rail, the connecting piece includes connecting steel plate, connecting steel plate and fixed connection down go up connecting steel plate with connecting steel plate's connecting portion down, go up connecting steel plate with worker shape crossbeam with worker shape longeron fixed connection, down connecting steel plate with the bottom edge steel sheet passes through connecting bolt's cooperation centre gripping under in on the existing bottom end rail.
2. The easy sightseeing platform additionally arranged on the existing truss girder according to claim 1, wherein the I-shaped girder comprises a plurality of girder segments which are spliced end to end along the length direction of the bridge; every longeron section includes first upper flange board, first web and first flange board down, two adjacent longeron section first upper flange board corresponds welded fastening on bridge length direction, two adjacent longeron section first web adopts bolt fixed connection on bridge length direction, two adjacent longeron section first flange board adopts bolt fixed connection on bridge length direction.
3. The easy sightseeing platform additionally arranged on the existing truss girder, which is characterized in that the I-shaped cross girder comprises a second upper flange plate, a second web plate and a second lower flange plate, the second upper flange plate and the I-shaped longitudinal girder are welded and fixed in the width direction of the bridge, the second lower flange plate and the I-shaped longitudinal girder are welded and fixed in the width direction of the bridge, and the second web plate and the I-shaped longitudinal girder are fixedly connected in the width direction of the bridge by bolts.
4. The easy sightseeing platform additionally arranged on the existing truss girder, which is characterized in that the I-shaped secondary crossbeam comprises a third upper flange plate and a third web plate, the third upper flange plate and the I-shaped longitudinal girder are fixed by welding in the width direction of the bridge, and the third web plate and the I-shaped longitudinal girder are fixedly connected by bolts in the width direction of the bridge.
5. The easy sightseeing platform additionally arranged on the existing truss girder as claimed in claim 1, wherein the glass panel is of a double-layer toughened glass structure.
6. The simple sightseeing platform additionally arranged on the existing truss girder as claimed in claim 1, wherein the fixing seat further comprises a leveling steel plate and a stiffening plate, the leveling steel plate is arranged between the upper connecting steel plate and the platform girder body, and the stiffening plate is fixedly arranged on the side surface of the bottom edge steel plate far away from the connecting piece.
7. The easy sightseeing platform additionally arranged on the existing truss girder as claimed in claim 1, wherein the fixing base further comprises at least two pairs of upper connecting bolts, and the upper connecting steel plate is fixedly connected with the I-shaped cross beam and the I-shaped longitudinal beam through the matching of the upper connecting bolts.
8. The easy sightseeing platform additionally arranged on the existing truss girder as claimed in claim 1, wherein the opposite two side surfaces of the lower connecting steel plate and the bottom edge steel plate are coated with steel adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121955443.8U CN215668970U (en) | 2021-08-19 | 2021-08-19 | Simple sightseeing platform additionally arranged on existing truss girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121955443.8U CN215668970U (en) | 2021-08-19 | 2021-08-19 | Simple sightseeing platform additionally arranged on existing truss girder |
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| Publication Number | Publication Date |
|---|---|
| CN215668970U true CN215668970U (en) | 2022-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121955443.8U Active CN215668970U (en) | 2021-08-19 | 2021-08-19 | Simple sightseeing platform additionally arranged on existing truss girder |
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| Country | Link |
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| CN (1) | CN215668970U (en) |
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