CN210684485U - Steel arch frame dismantling device for deck box type arch bridge construction - Google Patents
Steel arch frame dismantling device for deck box type arch bridge construction Download PDFInfo
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- CN210684485U CN210684485U CN201921376438.4U CN201921376438U CN210684485U CN 210684485 U CN210684485 U CN 210684485U CN 201921376438 U CN201921376438 U CN 201921376438U CN 210684485 U CN210684485 U CN 210684485U
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Abstract
The utility model discloses a steel bow member demolishs device is used in construction of deck box arch bridge, assemble the bow member that the festival section carries out horizontal migration and assemble the horizontal migration platform that the festival section shifted out from the arch rib below with the bow member including driving the steel bow member that demolishs, drive horizontal migration platform and carry out the platform moving mechanism that removes and assemble the festival section to the bow member and transfer perpendicularly and assemble the arch member the festival section and transfer to the bow member on the horizontal migration platform and transfer the mechanism, every bow member is assembled the festival section and all hangs in midair in the arch rib below through many suspension rod fastenings. The utility model has the advantages of reasonable design and use easy and simple to handle, excellent in use effect, adopt many to hang the pole and assemble the festival section with each bow member and fasten respectively and suspend in midair in the rib bottom, adopt the bow member to transfer the mechanism and assemble the festival section to the bow member and transfer one by one again to assemble the festival section through horizontal migration platform and shift out from the arch rib below with the bow member, can accomplish the process of demolising of each bow member assembly festival section in demolising the steel bow member portably, fast, and demolish process safety, reliable.
Description
Technical Field
The utility model belongs to the technical field of the bridge construction, concretely relates to steel bow member demolishs device for deck box arched bridge construction.
Background
The deck arch bridge is a bridge with bridge deck set over the main bearing structure of the bridge span, and the arch abutment transfers the thrust of the end of the arch rib (also called arch end) to the component of the bedrock and is located at the joint between the two ends of the arch bridge and the bedrock. The abutments used to support the ribs are permanent abutments which are typically reinforced concrete structures supported on bedrock. When a deck box type arch bridge with the arch ribs being reinforced concrete arch rings is constructed, the arch ribs are usually cast-in-place by adopting steel arches erected in place in advance; and after the arch rib is cast and molded, dismantling the steel arch frame.
However, at present, when the steel arch is dismantled, construction operation is random, a set of unified and standard dismantling method is not available, in addition, the steel truss is large in size and weight, and the steel truss dismantling difficulty is large, in addition, because the steel truss is stably supported under the constructed and formed arch rib, the construction space under the arch rib is limited, the steel truss needs to be moved out from the lower part of the arch rib during actual dismantling, and the steel arch dismantling difficulty is further increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough among the prior art is directed against, a steel bow member demolishs device is used in construction of deck box arch bridge is provided, a structure is simple, reasonable in design and use easy and simple to handle, excellent in use effect, adopt many suspension rods to assemble the festival section with each bow member in the steel bow member demolishd and fasten respectively and suspend in midair in the fashioned arch rib bottom of having under construction, adopt the arch member again to transfer the mechanism and assemble the festival section to the arch member and transfer one by one, and will transfer the arch member of targetting in place through the horizontal migration platform and assemble the festival section and shift out from the arch rib below, can be simple and convenient, accomplish fast and demolish the process of demolising of each arch member assembly festival section in the steel bow member, and demolish the process safety.
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a device is demolishd to steel bow member for construction of deck box arched bridge which characterized in that: the construction method comprises a horizontal moving platform for driving an arch assembly section of a dismantled steel arch to move horizontally and moving the arch assembly section out of the lower part of an arch rib, a platform moving mechanism for driving the horizontal moving platform to move, and an arch lowering mechanism for vertically lowering the arch assembly section and lowering the arch assembly section onto the horizontal moving platform, wherein the dismantled steel arch is a steel arch for constructing the arch rib of a constructed through arch bridge, the arch rib is a reinforced concrete arch ring, and the arch rib is a box girder crossing a river channel; the dismantled steel arch frames are arranged along the longitudinal bridge direction and are formed by splicing a plurality of arch frame splicing sections arranged from front to back along the longitudinal bridge direction; each arch assembling segment is fastened and suspended below an arch rib through a plurality of suspension rods, each suspension rod is vertically arranged with a bottom plate of the arch rib at the arranged position, and a plurality of mounting holes for mounting the suspension rods are reserved on the bottom plate of the arch rib;
the arch frame lowering mechanism comprises a plurality of hoisting mechanisms for hoisting the lowered arch frame assembly sections, the hoisting mechanisms are all positioned on the arch ribs, and each hoisting mechanism is connected with the lowered arch frame assembly section through a hoisting rope;
the horizontal moving platform is a floating platform floating on a river channel, and the floating platform is positioned below the dismantled steel arch frame; the platform moving mechanism comprises a left moving mechanism which is positioned on the left side of the dismantled steel arch and drives the floating platform to move leftwards and a right moving mechanism which is positioned on the right side of the dismantled steel arch and drives the floating platform to move rightwards, and the left moving mechanism and the right moving mechanism are both electric winches; the left side moving mechanism and the left side of the floating platform and the right side moving mechanism and the right side of the floating platform are connected through pull ropes.
The steel arch dismantling device for the construction of the deck box type arch bridge is characterized in that: the floating platform is a rectangular platform and is formed by assembling a plurality of floating boxes.
The steel arch dismantling device for the construction of the deck box type arch bridge is characterized in that: the left side moving mechanism and the right side moving mechanism respectively comprise a front platform moving device and a rear platform moving device, the two platform moving devices are respectively arranged on the front side and the rear side of the dismantled steel arch frame, and the two platform moving devices and the floating type platform are connected through pull ropes.
The steel arch dismantling device for the construction of the deck box type arch bridge is characterized in that: the suspension rod is finish-rolled deformed steel bar.
The steel arch dismantling device for the construction of the deck box type arch bridge is characterized in that: the bottom of the finish rolling deformed steel bar is connected with the arch assembly section in a threaded mode, a limiting nut for limiting the arch assembly section is arranged at the bottom of the finish rolling deformed steel bar, and the limiting nut is coaxially sleeved on the finish rolling deformed steel bar.
The steel arch dismantling device for the construction of the deck box type arch bridge is characterized in that: the upper portion of the finish-rolled deformed steel bar is fixed on an embedded nut, the embedded nut is coaxially sleeved on the finish-rolled deformed steel bar, the embedded nut is installed in the installation hole and is poured with the bottom plate of the arch rib into a whole.
The steel arch dismantling device for the construction of the deck box type arch bridge is characterized in that: the hoisting mechanism is an electric winch, and the lifting rope is a steel wire rope.
The steel arch dismantling device for the construction of the deck box type arch bridge is characterized in that: and a plurality of hoisting holes for the hoisting ropes to pass through are reserved on the arch ribs.
The steel arch dismantling device for the construction of the deck box type arch bridge is characterized in that: the arch frame lowering mechanism comprises a front hoisting mechanism and a rear hoisting mechanism, the two hoisting mechanisms and the dismantled steel arch frame are arranged on the same vertical surface, and the two hoisting mechanisms are respectively positioned above the front side and the rear side of the assembly section of the lowered arch frame.
Compared with the prior art, the utility model has the following advantage:
1. simple structure, reasonable in design and input construction cost are lower.
2. The adopted arch frame lowering mechanism is simple in structure, reasonable in design, easy and convenient to use and operate and good in using effect, the dismantled arch frame assembling segments are hoisted and stably lowered through a plurality of hoisting mechanisms, the hoisting mechanisms are directly supported on the constructed and formed arch ribs, actual supporting and moving are simple and convenient, and supporting is stable.
3. The adopted horizontal moving platform is simple in structure, reasonable in design, convenient to machine, manufacture, erect and assemble, simple and convenient to disassemble and assemble, low in input cost, less in input manpower and material resources, and capable of forming the assembled floating body as the moving platform by connecting the plurality of floating boxes. The horizontal moving platform is simple and convenient to use and operate and good in using effect, the position of the horizontal moving platform is simply, conveniently and quickly adjusted by the platform moving mechanism, the horizontal moving platform can be effectively positioned, and the horizontal moving platform can be effectively prevented from deviating and shifting in the dismantling process, so that a stable supporting platform is provided; meanwhile, the position of the horizontal moving platform is adjustable and simple and convenient to adjust, the arch assembling sections at different positions can be conveniently detached, the position of the horizontal moving platform can be simply and conveniently adjusted by controlling the platform moving mechanism, the adjustment is simple and convenient, and the adjustment process is easy to control.
4. The steel arch assembling device has the advantages that the using effect is good, the practical value is high, the disassembling process of all arch assembling sections in the disassembled steel arch can be simply, conveniently and quickly completed, the disassembling process is safe and reliable, the unassembled arch assembling sections are fastened and suspended at the bottom of the constructed and formed arch rib through the plurality of suspension rods, and the safety of the disassembling process is further ensured.
To sum up, the utility model has the advantages of simple structure and reasonable design and use easy and simple to handle, excellent in use effect, adopt many to hang the pole and assemble each bow member in will demolising the steel bow member and fasten respectively and suspend in midair in the fashioned arch rib bottom of construction, adopt the bow member to transfer the mechanism and assemble the festival section to the bow member and transfer one by one again, and will transfer the bow member that targets in place through the horizontal migration platform and assemble the festival section and shift out from the arch rib below, can portably, accomplish fast and demolish the process of demolising of the festival section is assembled to each bow member in demolising the steel bow member, and demolish process safety, reliably, demolish the process simultaneously and can not cause any influence to the arch rib.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic view of the longitudinal bridge structure of the present invention.
Fig. 2 is a schematic view of the plane structure of the horizontal moving platform and the platform moving mechanism of the present invention.
Fig. 3 is an enlarged schematic view of a point a in fig. 1.
Description of reference numerals:
1-the dismantled steel arch frame; 1-arch assembling segments; 2-arch rib;
3, hanging a rod; 4-floating type platform; 5, lifting a rope;
6-permanent support; 7-left side moving mechanism; 8-right side moving mechanism;
9-pulling a rope; 10-a limit nut; 11-river channel;
12-hoisting mechanism.
Detailed Description
As shown in fig. 1 and 2, the present invention includes a horizontal moving platform for driving the arch assembly segment 1-1 of the removed steel arch 1 to move horizontally and moving the arch assembly segment 1-1 out from the lower part of the arch rib 2, a platform moving mechanism for driving the horizontal moving platform to move, and an arch lowering mechanism for vertically lowering the arch assembly segment 1-1 and lowering the arch assembly segment 1-1 onto the horizontal moving platform, wherein the removed steel arch 1 is a steel arch for constructing the arch rib 2 of the constructed through arch bridge, the arch rib 2 is a reinforced concrete arch ring, and the arch rib 2 is a box girder crossing the river channel 11; the dismantled steel arch 1 is arranged along the longitudinal bridge direction and is formed by splicing a plurality of arch splicing sections 1-1 arranged from front to back along the longitudinal bridge direction; each arch assembling section 1-1 is fixedly suspended below an arch rib 2 through a plurality of suspension rods 3, each suspension rod 3 is vertically arranged with a bottom plate of the arch rib 2 at the arrangement position, and a plurality of mounting holes for mounting the suspension rods 3 are reserved on the bottom plate of the arch rib 2;
the arch frame lowering mechanism comprises a plurality of hoisting mechanisms 12 for hoisting the lowered arch frame assembly sections 1-1, the hoisting mechanisms 12 are all positioned on the arch rib 2, and each hoisting mechanism 12 is connected with the lowered arch frame assembly section 1-1 through a hoisting rope 5;
the horizontal moving platform is a floating platform 4 floating on a river channel 11, and the floating platform 4 is positioned below the dismantled steel arch frame 1; the platform moving mechanism comprises a left moving mechanism 7 which is positioned on the left side of the dismantled steel arch 1 and drives the floating platform 4 to move leftwards and a right moving mechanism 8 which is positioned on the right side of the dismantled steel arch 1 and drives the floating platform 4 to move rightwards, and the left moving mechanism 7 and the right moving mechanism 8 are both electric winches; the left moving mechanism 7 and the left side of the floating platform 4 and the right moving mechanism 8 and the right side of the floating platform 4 are connected through pull ropes 9.
As shown in fig. 1, the front and rear ends of the arch rib 2 are respectively supported on a permanent support 6, and the permanent support 6 is a reinforced concrete support. The permanent support 6 is an abutment supporting the rib 2.
In this embodiment, the floating platform 4 is a rectangular platform and is formed by assembling a plurality of buoyancy tanks.
The buoyancy tanks are cubic tanks and are arranged on the same water surface, so that the practical processing is simple and convenient, and the supporting requirement of the lower arch assembly section 1-1 can be met.
As shown in fig. 2, the number of the left moving mechanisms 7 and the right moving mechanisms 8 is two, two of the left moving mechanisms 7 are respectively arranged on the front side and the rear side of the dismantled steel arch 1, two of the right moving mechanisms 8 are respectively arranged on the front side and the rear side of the dismantled steel arch 1, and each of the left moving mechanisms 7 and each of the right moving mechanisms 8 is connected with the floating platform 4 through a pull rope 9.
In this embodiment, the two left moving mechanisms 7 and the two right moving mechanisms 8 in the platform moving mechanism are platform moving devices, and the platform moving devices are the electric winches.
Two left side moving mechanism 7 is respectively for laying in the left front side moving mechanism in the steel bow member 1 the place ahead of demolishing and laying in the left rear side moving mechanism in the steel bow member 1 rear of demolishing, two right side moving mechanism 8 is respectively for laying in the right front side moving mechanism in the steel bow member 1 the place ahead of demolishing and laying in the right rear side moving mechanism in the steel bow member 1 rear of demolishing, left side front side moving mechanism with right front side moving mechanism all is located one side river bank in river course 11, left side rear side moving mechanism with right rear side moving mechanism all is located the opposite side river bank in river course 11.
In practical use, the position of the floating platform 4 can be adjusted through the four platform moving devices in the platform moving mechanism, so that the aim of moving out the arch frame assembling sections 1-1 from the lower part of the arch rib 2 through the floating platform 4 is fulfilled. Moreover, the position of the floating platform 4 can be fixed by four platform moving devices in the platform moving mechanism, so that the platform moving mechanism can also be used as a positioning device of the floating platform 4, the use and the operation are very simple and convenient, the floating platform 4 can be simply, conveniently and quickly moved in place, and the floating platform 4 which is moved in place can be effectively fixed.
In this embodiment, the pull ropes 9 of the four platform moving devices in the platform moving mechanism are respectively fixed on four top corners of the floating platform 4.
For easy and reliable fixation, in this embodiment, the suspension rod 3 is finish-rolled deformed steel bar.
In this embodiment, as shown in fig. 3, the bottom of the finish-rolled deformed steel bar is connected to the arch assembly segment 1-1 in a threaded manner, the bottom of the finish-rolled deformed steel bar is provided with a limit nut 10 for limiting the arch assembly segment 1-1, and the limit nut 10 is coaxially sleeved on the finish-rolled deformed steel bar.
For fixing simply and conveniently, firmly and conveniently, the upper part of the finish-rolled deformed steel bar is fixed on an embedded nut, the embedded nut is coaxially sleeved on the finish-rolled deformed steel bar, and the embedded nut is installed in the installation hole and is poured with the bottom plate of the arch rib 2 into a whole.
In this embodiment, the hoisting mechanism 12 is an electric hoist, and the lifting rope 5 is a steel wire rope.
And a plurality of hoisting holes for the hoisting ropes 5 to pass through are reserved on the arch rib 2.
In this embodiment, the arch lowering mechanism includes two hoisting mechanisms 12, the two hoisting mechanisms 12 are both arranged on the same vertical plane with the dismantled steel arch 1, and the two hoisting mechanisms 12 are respectively located above the front side and the rear side of the lowered arch assembling section 1-1.
In actual use, the number of the hoisting mechanisms 12 in the arch lowering mechanism and the layout positions of the hoisting mechanisms 12 can be adjusted correspondingly according to specific requirements.
In this embodiment, all the hoisting holes on the arch rib 2 are located on the same vertical plane.
During actual construction, the arch rib 2 is constructed by adopting the dismantled steel arch frame 1, a plurality of mounting holes are reserved in the bottom plate of the arch rib 2 in the construction process of the arch rib 2, the embedded nuts are installed in the mounting holes, and a plurality of hoisting holes are reserved in the arch rib 2. After the construction of the arch rib 2 is finished, all the arch assembling sections 1-1 are fastened and suspended at the bottom of the arch rib 2 through the suspension rods 3, and the purpose of temporarily fixing all the arch assembling sections 1-1 through the arch rib 2 is achieved. After the arch assembling segments 1-1 in the dismantled steel arch 1 are all fastened and suspended at the bottom of the arch rib 2 through the suspension rods 3, the utility model is adopted to dismantle the arch assembling segments 1-1 in the dismantled steel arch 1 one by one.
When the utility model is adopted to remove any one of the arch assembly sections 1-1 in the removed steel arch 1, firstly, two hoisting mechanisms 12 in the arch lowering mechanism are respectively moved to the front and back sides of the removed arch assembly section 1-1, and the two hoisting mechanisms 12 are supported on the constructed and formed arch rib 2, then the lower parts of the lifting ropes 5 of the two hoisting mechanisms 12 are bound and fixed on the arch assembly section 1-1, and the lifting ropes 5 are vertically arranged, thus completing the hoisting process of the arch lowering mechanism to the removed arch assembly section 1-1; then, all the suspension rods 3 between the removed arch assembling sections 1-1 and the arch ribs 2 are removed, so that the removed arch assembling sections 1-1 are disconnected with the arch ribs 2; then, the removed arch assembling sections 1-1 are lowered to be positioned on the floating platform 4 by adopting the arch lowering mechanism, and before the removed arch assembling sections 1-1 are lowered by adopting the arch lowering mechanism, the floating platform 4 is moved to be right below the removed arch assembling sections 1-1 by adopting the platform moving mechanism; after the removed arch assembling section 1-1 is lowered to be positioned on the floating platform 4, the lifting rope 5 of the arch lowering mechanism is disconnected from the removed arch assembling section 1-1, and the lowering process of the removed arch assembling section 1-1 is completed; then, the floating platform 4 and the removed arch splicing section 1-1 are synchronously moved out from the lower part of the arch rib 2 by adopting the platform moving mechanism, so that the removal process of the removed arch splicing section 1-1 is completed, the removal process of the removed arch splicing section 1-1 can be simply, conveniently and quickly completed, and the removal process is safe and reliable.
During actual construction, after the floating platform 4 and the removed arch frame assembly sections 1-1 are synchronously moved out from the lower portions of the arch ribs 2 by the platform moving mechanism, the removed arch frame assembly sections 1-1 can be hoisted to the storage positions by a cable crane for hoisting the removed steel arch frame 1, and the removed arch frame assembly sections 1-1 can be directly moved to one side river bank of the river channel 11 by the floating platform 4.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (9)
1. The utility model provides a device is demolishd to steel bow member for construction of deck box arched bridge which characterized in that: the construction method comprises a horizontal moving platform which drives an arch assembly section (1-1) of a dismantled steel arch (1) to move horizontally and moves the arch assembly section (1-1) out of the lower part of an arch rib (2), a platform moving mechanism which drives the horizontal moving platform to move, an arch lowering mechanism which vertically lowers the arch assembly section (1-1) and lowers the arch assembly section (1-1) onto the horizontal moving platform, wherein the dismantled steel arch (1) is a steel arch for constructing an arch rib (2) of a constructed through arch bridge, the arch rib (2) is a reinforced concrete arch ring, and the arch rib (2) is a box girder crossing a river channel (11); the dismantled steel arch (1) is arranged along the longitudinal bridge direction and is formed by splicing a plurality of arch assembly sections (1-1) arranged from front to back along the longitudinal bridge direction; each arch assembling segment (1-1) is fastened and suspended below an arch rib (2) through a plurality of suspension rods (3), each suspension rod (3) is vertically arranged with a bottom plate of the arch rib (2) at the arrangement position, and a plurality of mounting holes for mounting the suspension rods (3) are reserved on the bottom plate of the arch rib (2);
the arch frame lowering mechanism comprises a plurality of hoisting mechanisms (12) for hoisting lowered arch frame assembly sections (1-1), the hoisting mechanisms (12) are all positioned on the arch rib (2), and each hoisting mechanism (12) is connected with the lowered arch frame assembly section (1-1) through a hoisting rope (5);
the horizontal moving platform is a floating platform (4) floating on a river channel (11), and the floating platform (4) is positioned below the dismantled steel arch frame (1); the platform moving mechanism comprises a left moving mechanism (7) which is positioned on the left side of the dismantled steel arch frame (1) and drives the floating platform (4) to move leftwards and a right moving mechanism (8) which is positioned on the right side of the dismantled steel arch frame (1) and drives the floating platform (4) to move rightwards, and the left moving mechanism (7) and the right moving mechanism (8) are both electric winches; the left moving mechanism (7) is connected with the left side of the floating platform (4) and the right moving mechanism (8) is connected with the right side of the floating platform (4) through pull ropes (9).
2. The steel arch dismantling device for the construction of the deck box-type arch bridge as recited in claim 1, wherein: the floating platform (4) is a rectangular platform and is formed by assembling a plurality of floating boxes.
3. The steel arch dismantling device for deck box type arch bridge construction according to claim 1 or 2, wherein: the left side moving mechanism (7) and the right side moving mechanism (8) comprise a front platform moving device and a rear platform moving device, the front platform moving device and the rear platform moving device are respectively arranged on the front side and the rear side of the dismantled steel arch frame (1), and the front platform moving device and the rear platform moving device are connected through pull ropes (9).
4. The steel arch dismantling device for deck box type arch bridge construction according to claim 1 or 2, wherein: the suspension rod (3) is finish-rolled deformed steel bar.
5. The steel arch dismantling device for the construction of the deck box-type arch bridge as recited in claim 4, wherein: the bottom of the finish rolling deformed steel bar is connected with the arch assembly section (1-1) in a threaded mode, a limiting nut (10) for limiting the arch assembly section (1-1) is arranged at the bottom of the finish rolling deformed steel bar, and the limiting nut (10) is coaxially sleeved on the finish rolling deformed steel bar.
6. The steel arch dismantling device for the construction of the deck box-type arch bridge as recited in claim 4, wherein: the upper portion of the finish-rolled deformed steel bar is fixed on an embedded nut, the embedded nut is coaxially sleeved on the finish-rolled deformed steel bar, the embedded nut is installed in the installation hole and is poured with the bottom plate of the arch rib (2) into a whole.
7. The steel arch dismantling device for deck box type arch bridge construction according to claim 1 or 2, wherein: the hoisting mechanism (12) is an electric winch, and the hoisting rope (5) is a steel wire rope.
8. The steel arch dismantling device for deck box type arch bridge construction according to claim 1 or 2, wherein: and a plurality of hoisting holes for the hoisting ropes (5) to pass through are reserved on the arch ribs (2).
9. The steel arch dismantling device for deck box type arch bridge construction according to claim 1 or 2, wherein: the arch frame lowering mechanism comprises a front hoisting mechanism and a rear hoisting mechanism (12), the two hoisting mechanisms (12) and the dismantled steel arch frame (1) are arranged on the same vertical surface, and the two hoisting mechanisms (12) are respectively positioned above the front side and the rear side of the lowered arch frame assembly section (1-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921376438.4U CN210684485U (en) | 2019-08-22 | 2019-08-22 | Steel arch frame dismantling device for deck box type arch bridge construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921376438.4U CN210684485U (en) | 2019-08-22 | 2019-08-22 | Steel arch frame dismantling device for deck box type arch bridge construction |
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| CN210684485U true CN210684485U (en) | 2020-06-05 |
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| CN201921376438.4U Active CN210684485U (en) | 2019-08-22 | 2019-08-22 | Steel arch frame dismantling device for deck box type arch bridge construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114517440A (en) * | 2022-01-28 | 2022-05-20 | 中铁二十局集团第四工程有限公司 | Large-section arch rib and construction method thereof |
-
2019
- 2019-08-22 CN CN201921376438.4U patent/CN210684485U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114517440A (en) * | 2022-01-28 | 2022-05-20 | 中铁二十局集团第四工程有限公司 | Large-section arch rib and construction method thereof |
| CN114517440B (en) * | 2022-01-28 | 2023-12-12 | 中铁二十局集团第四工程有限公司 | Large-section arch rib and construction method thereof |
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