CN111851317B - Method for installing arch ring of arch bridge - Google Patents
Method for installing arch ring of arch bridge Download PDFInfo
- Publication number
- CN111851317B CN111851317B CN202010865507.9A CN202010865507A CN111851317B CN 111851317 B CN111851317 B CN 111851317B CN 202010865507 A CN202010865507 A CN 202010865507A CN 111851317 B CN111851317 B CN 111851317B
- Authority
- CN
- China
- Prior art keywords
- arch
- support
- fixed
- ring
- arch ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D4/00—Arch-type bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The application provides an installation method of an arch bridge arch ring, which comprises the following steps: 1) constructing an arch support on the bearing platform; 2) installing an arch ring support; the arch ring support comprises an arch truss and fixed supports supported at two ends of the arch truss, the fixed supports are fixed on a bearing platform to integrally hoist the arch ring truss, and two ends of the arch ring support are respectively fixed on the two fixed supports; 3) erecting a steel bar structure of an arch ring between two adjacent arch seats, erecting a pouring template along the steel bar structure of the arch ring, and supporting the pouring template by the arch truss; 4) finishing the concrete pouring of the arch ring; 5) and disassembling the arch ring support. According to the installation method of the arch bridge arch ring, concrete is poured in the arch ring in a single span mode through the corbels and the steel plates which are pre-embedded in the arch seats, the integration of the arch ring support and the arch seat structure can be achieved, the stability of the structure of the arch ring support and the structure of the arch seat structure is guaranteed, and finally the construction safety and the construction quality of the arch ring are guaranteed.
Description
Technical Field
The application relates to the technical field of arch bridge construction, in particular to an installation method of an arch ring of an arch bridge.
Background
Along with the high-speed development of modern economy, the development of high-speed railways and highways also enters a rapid development stage, bridges are built more and more, and arch bridges have the advantages of simple structure, definite stress, various forms, attractive appearance and the like, and are applied more and more widely to the high-speed railways and the highways.
For the bridge type of the continuous arch bridge, when the arch ring is constructed in a single span, the arch foot of the arch ring can apply horizontal thrust to the arch base, so that the stress of the arch base is easy to be unbalanced, and the construction safety and the construction quality of the arch ring are difficult to ensure.
Disclosure of Invention
The application aims to provide a method for installing an arch ring of an arch bridge with safe construction.
In order to achieve the above object, the present application provides the following technical solutions:
a method for installing an arch ring of an arch bridge comprises the following steps:
1) constructing an arch support on the bearing platform;
2) installing an arch ring support; the arch ring support comprises an arch truss and fixed supports supported at two ends of the arch truss, the fixed supports are fixed on a bearing platform to integrally hoist the arch ring truss, and two ends of the arch ring support are respectively fixed on the two fixed supports;
3) erecting a steel bar structure of an arch ring between two adjacent arch seats, erecting a pouring template along the steel bar structure of the arch ring, and supporting the pouring template by the arch truss;
4) finishing the concrete pouring of the arch ring;
5) and disassembling the arch ring support.
Preferably, the side surface of the fixed support is fixedly connected with a first steel plate pre-buried in the middle of the side surface of the arch support.
Preferably, the end part of the arched truss is fixedly connected with a second steel plate pre-buried at the upper part of the side surface of the arch support.
Preferably, a plurality of fixed supports are arranged along the transverse bridge direction, a bearing beam is erected on the fixed supports, an inverted U-shaped cushion block is fixed at the upper part of the bearing beam, and the end part of the arched truss is fixed on the cushion block.
Preferably, the inclined plane of the upper portion of the arch center is used for supporting the pouring template at the arch springing position of the arch ring, a third steel plate is pre-embedded on the inclined plane of the upper portion of the arch center, a bracket is welded on the third steel plate, and the bracket is used for supporting the pouring template at the arch springing position of the arch ring.
Preferably, when the arch center is constructed, longitudinal stress steel bars of an arch ring are embedded in the arch center, and the longitudinal stress steel bars extend out of the arch center.
Compared with the prior art, the scheme of the application has the following advantages:
according to the installation method of the arch bridge arch ring, concrete pouring is carried out on the arch ring in a single span mode through the brackets and the steel plates which are pre-embedded in the arch seats, the integration of the arch ring support and the arch seat structure can be achieved, the stability of the arch ring support and the arch seat structure is guaranteed, and finally the construction safety and the construction quality of the arch ring are guaranteed.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural view of an arch ring of an arch bridge in the present application;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a schematic structural view of the abutment and tie-rod assembly of the present application;
fig. 4 is a schematic view of the structure of the arch ring steel bar in the application.
Reference numerals: 1. an arch support; 2. an arch ring support; 21. an arch truss; 22. fixing a support; 3. pouring a template; 4. a pull rod is arranged; 5. a first steel plate; 6. a second steel plate; 7. a third steel plate; 8. and (5) longitudinally stressing the steel bars.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
It will be understood by those within the art that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 3, the present application relates to a method for installing an arch ring of an arch bridge, which is used for improving the safety and stability of the installation of the arch ring, and comprises the following steps:
1) constructing an arch support 1 on a bearing platform;
2) installing an arch ring bracket 2; the arch ring support 2 comprises an arch truss 21 and fixed supports 22 supported at two ends of the arch truss 21, the fixed supports 22 are fixed on a bearing platform to integrally hoist the arch ring truss, and two ends of the arch ring truss are respectively fixed on the two fixed supports 22;
3) erecting a steel bar structure of an arch ring between two adjacent arch supports 1, erecting a pouring template 3 along the steel bar structure of the arch ring, and supporting the pouring template 3 by the arch truss 21;
4) finishing the concrete pouring of the arch ring;
5) disassembling the arch ring support 2;
when the arch support 1 is constructed, a counter pull rod 4 is pre-buried in the arch support 1, one end of the counter pull rod 4 is fixed on the arch support 1, and the other end of the counter pull rod 4 is fixed on a fixed support 22.
In this application, through pre-buried pull rod 4 in hunch seat 1, and on pull rod 4 one end was fixed in hunch seat 1, the other end was fixed on fixing support 22, and then carries out concrete placement at hunch circle single span, can balance the horizontal thrust that hunch seat 1 was applyed for the hunch seat, through the steadiness of having guaranteed hunch seat 1 structure, finally guaranteed the construction safety and the construction quality of hunch seat.
Preferably, the bottom of the fixed support 22 is fixed on a bearing platform, the middle of the side of the fixed support 22 is further fixedly connected with the first steel plate 5 pre-embedded in the middle of the side of the arch support 1, in this embodiment, a fixed steel plate (not numbered in the drawing, the same below) is connected between the fixed support 22 and the arch support 1, and two ends of the fixed steel plate are respectively welded and fixed with the first steel plate 5 and the fixed support 22.
By connecting and fixing the fixed support 22 and the arch support 1, the supporting capability of the fixed support 22 can be improved, so that the fixed support 22 can stably support the arch truss 21, and the subsequent installation of the arch support is ensured to be smooth.
Further, the arch truss 21 is erected on the fixed support 22, and an end of the arch truss 21 is fixedly connected with the second steel plate 6 pre-embedded at the upper portion of the side surface of the arch support 1, in this embodiment, a steel (not numbered in the drawing, the same applies below) is arranged between the arch truss 21 and the arch support 1, and two ends of the steel are respectively welded and fixed with the second steel plate 6 and the arch truss 21.
By connecting and fixing the arch truss 21 and the arch support 1, the stability of the arch truss 21 can be improved, so as to ensure the smoothness of the subsequent arch ring construction.
Furthermore, the inclined plane of the upper portion of the arch support 1 is used for supporting the pouring template 3 at the arch springing position, a third steel plate 7 is also pre-embedded on the inclined plane of the upper portion of the arch support 1, a bracket (not numbered in the figure, the same below) is welded on the third steel plate 7, and the bracket is used for supporting the pouring template 3 at the arch springing position, so that the stability of the pouring template 3 during concrete pouring is ensured, and the safety and the quality of arch springing construction are further ensured.
In this application, the template 3 of pouring of arch ring is supported by arch ring support 2 to guarantee the stability of arch ring in the work progress, welded fastening between the pre-buried first steel sheet 5 in this application with fixing support 22 and arch center 1, then with welded fastening between the pre-buried second steel sheet 6 in arch truss 21 and the arch center 1, and then strengthened the steadiness that arch ring support 2 and arch center 1 are connected has also improved the wholeness between arch ring support 2 and the arch center 1 simultaneously, and then guarantees when the arch ring is under construction and the stability after the construction is accomplished.
In this embodiment, the fixing supports 22 are steel pipe piles of phi 426X6mm, a plurality of fixing supports 22 are uniformly arranged along the transverse bridge direction, a bearing beam (not numbered in the figure, the same below) is erected on the plurality of fixing supports 22, an inverted U-shaped cushion block (not numbered in the figure, the same below) is fixed on the upper portion of the bearing beam, the end portions of the arch trusses 21 are fixed on the cushion block, and the arch trusses 21 are supported by the plurality of fixing supports 22 to ensure the stability of the arch trusses 21 and finally ensure the safety and quality of arch ring construction.
Preferably, the tie rods 4 are arranged in the transverse bridge direction, the tie rods 4 correspond to the fixed supports 22 one by one, horizontal thrust applied to the arch center 1 by the arch ring during pouring is balanced through the action of the tie rods 4, the stability of the arch center 1 is guaranteed, and the safety and the quality of arch ring construction are further guaranteed.
Furthermore, two opposite pull rods 4 are arranged along the vertical direction, the two opposite pull rods 4 are arranged up and down oppositely, the upper opposite pull rod 4 is fixedly connected with the fixed support 22 on one side of the arch support 1, and the lower opposite pull rod 4 is fixedly connected with the fixed support 22 on the other side of the arch support 1.
Through setting up two counter pull rods 4, when the arch ring is pour, support two hunch seats 1 homoenergetic of hunch circle and come from the horizontal thrust that the hunch circle was exerted when pouring through counter pull rod 4 balance, and then guarantee the stability of the hunch seat 1 at hunch circle both ends, guarantee the safety and the quality of hunch circle construction.
In this embodiment, when the arch support 1 in step 1) is constructed, a steel pipe (not numbered in the drawing, the same applies below) is pre-embedded in the arch support 1 to allow the counter-pull rod 4 to penetrate through the pre-embedded steel pipe, and after the counter-pull rod 4 penetrates through the arch support 1, one end of the counter-pull rod 4 is fixed to the arch support 1, and the other end of the counter-pull rod 4 is fixed to the fixed support 22, so that the counter-pull rod 4 is pre-embedded in the arch support 1 without being constructed in the arch support 1, thereby avoiding subsequent interference to the counter-pull rod 4 in the construction process and affecting the construction efficiency; meanwhile, after the construction is finished, the pull rod 4 is also convenient to disassemble.
With reference to fig. 4, preferably, when the arch support 1 of step 1) is constructed, longitudinal stress steel bars 8 of the arch ring are embedded in the arch support 1, and the longitudinal stress steel bars 8 extend out of the arch support 1, the length of the longitudinal stress steel bars 8 embedded in the arch support 1 is not less than 1.5 meters, and the length of the longitudinal stress steel bars 8 extending out of the arch support 1 is not less than 2 meters, so that a subsequent constructor can conveniently set up a steel bar structure of the arch ring along the longitudinal stress steel bars 8, and the stability of the arch ring connected to the arch support 1 is ensured.
To sum up, in the installation method of the arch bridge arch ring related by the application, the fixed support 22 and the first steel plate 5 pre-embedded in the arch support 1 are welded and fixed through the fixed steel plate, the arch truss 21 and the second steel plate 6 pre-embedded in the arch support 1 are welded and fixed through the I-steel, the arch support 1 is provided with a bracket supported on the pouring template 3, and the pull rod 4 is arranged in the arch support 1 to balance the horizontal thrust of the arch ring to the arch support 1 during pouring, so that the stability of the arch ring support 2 and the arch support 1 is ensured, and the construction safety and the construction quality of the arch ring are ensured.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
Claims (2)
1. An installation method of an arch ring of an arch bridge is characterized in that: the method comprises the following steps:
1) constructing an arch support on a bearing platform, wherein when the arch support is constructed, longitudinal stress steel bars of an arch ring are pre-embedded in the arch support, and the longitudinal stress steel bars extend out of the arch support, the pre-embedded length of the longitudinal stress steel bars in the arch support is not less than 1.5 meters, and the length of the longitudinal stress steel bars extending out of the arch support is not less than 2 meters;
2) installing an arch ring support; the arch ring support comprises an arch truss and fixed supports supported at two ends of the arch truss, the fixed supports are fixed on a bearing platform to integrally hoist the arch ring truss, and two ends of the arch ring support are respectively fixed on the two fixed supports; the side surface of the fixed support is fixedly connected with a first steel plate pre-buried in the middle of the side surface of the arch support, and the end part of the arched truss is fixedly connected with a second steel plate pre-buried in the upper part of the side surface of the arch support;
3) erecting a steel bar structure of an arch ring between two adjacent arch supports, erecting a pouring template along the steel bar structure of the arch ring, supporting the pouring template by the arch truss, supporting the pouring template at the arch foot of the arch ring by an inclined plane at the upper part of the arch support, pre-embedding a third steel plate on the inclined plane at the upper part of the arch support, welding a bracket on the third steel plate, and supporting the pouring template at the arch foot of the arch ring by the bracket;
4) finishing the concrete pouring of the arch ring;
5) disassembling the arch ring support;
when the arch abutment is constructed, a counter pull rod is embedded in the arch abutment, one end of the counter pull rod is fixed on the arch abutment, and the other end of the counter pull rod is fixed on the fixed support.
2. The method for installing an arch bridge arch ring of claim 1, wherein: the fixed supports are arranged in the transverse bridge direction, bearing beams are erected on the fixed supports, inverted U-shaped cushion blocks are fixed on the upper portions of the bearing beams, and the end portions of the arch trusses are fixed on the cushion blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010865507.9A CN111851317B (en) | 2020-08-25 | 2020-08-25 | Method for installing arch ring of arch bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010865507.9A CN111851317B (en) | 2020-08-25 | 2020-08-25 | Method for installing arch ring of arch bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111851317A CN111851317A (en) | 2020-10-30 |
| CN111851317B true CN111851317B (en) | 2022-08-30 |
Family
ID=72968192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010865507.9A Active CN111851317B (en) | 2020-08-25 | 2020-08-25 | Method for installing arch ring of arch bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111851317B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897880B (en) * | 2021-11-22 | 2023-09-12 | 贵州桥梁建设集团有限责任公司 | Method for cast-in-situ construction of short-span suspension spliced arch bridge of large-span concrete arch bridge |
| CN114411686B (en) * | 2022-03-01 | 2022-09-27 | 山东大学 | Bad foundation reinforcement system based on underground arch structure and reinforcement method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02176004A (en) * | 1988-12-27 | 1990-07-09 | Okabe Co Ltd | Method for installing traveling form for arched concrete |
| CN101029472A (en) * | 2007-03-21 | 2007-09-05 | 浙江省舟山连岛工程建设指挥部 | Tower column of stayed-cable bridge and its construction |
| CN102828469A (en) * | 2012-08-31 | 2012-12-19 | 中铁三局集团有限公司 | Positioning mounting construction method for triangular steel constructed pillar of inclined-leg steel box |
| CN205205667U (en) * | 2015-10-23 | 2016-05-04 | 中交二公局第一工程有限公司 | Bearing bracket device |
| CN108660935A (en) * | 2018-05-29 | 2018-10-16 | 广西路桥工程集团有限公司 | A kind of construction method of reinforced concrete arch bridge |
| CN109056548A (en) * | 2018-09-19 | 2018-12-21 | 中交二公局第六工程有限公司 | A kind of steel arch frame construction method |
| CN209178838U (en) * | 2018-11-27 | 2019-07-30 | 中铁二十局集团第三工程有限公司 | The interim skewback of deck type box arch bridge construction |
| CN210658063U (en) * | 2019-03-06 | 2020-06-02 | 安徽省公路桥梁工程有限公司 | Arch rib enlarged cross section hanging mould system |
| CN210684428U (en) * | 2019-08-08 | 2020-06-05 | 中铁二十局集团第三工程有限公司 | Deck-type arch bridge arch rib construction structure |
-
2020
- 2020-08-25 CN CN202010865507.9A patent/CN111851317B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02176004A (en) * | 1988-12-27 | 1990-07-09 | Okabe Co Ltd | Method for installing traveling form for arched concrete |
| CN101029472A (en) * | 2007-03-21 | 2007-09-05 | 浙江省舟山连岛工程建设指挥部 | Tower column of stayed-cable bridge and its construction |
| CN102828469A (en) * | 2012-08-31 | 2012-12-19 | 中铁三局集团有限公司 | Positioning mounting construction method for triangular steel constructed pillar of inclined-leg steel box |
| CN205205667U (en) * | 2015-10-23 | 2016-05-04 | 中交二公局第一工程有限公司 | Bearing bracket device |
| CN108660935A (en) * | 2018-05-29 | 2018-10-16 | 广西路桥工程集团有限公司 | A kind of construction method of reinforced concrete arch bridge |
| CN109056548A (en) * | 2018-09-19 | 2018-12-21 | 中交二公局第六工程有限公司 | A kind of steel arch frame construction method |
| CN209178838U (en) * | 2018-11-27 | 2019-07-30 | 中铁二十局集团第三工程有限公司 | The interim skewback of deck type box arch bridge construction |
| CN210658063U (en) * | 2019-03-06 | 2020-06-02 | 安徽省公路桥梁工程有限公司 | Arch rib enlarged cross section hanging mould system |
| CN210684428U (en) * | 2019-08-08 | 2020-06-05 | 中铁二十局集团第三工程有限公司 | Deck-type arch bridge arch rib construction structure |
Non-Patent Citations (1)
| Title |
|---|
| 宜万铁路下村坝隧道2号溶腔拱跨结构施工技术;阳敦国;《铁道标准设计》;20100820(第08期);第134-137页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111851317A (en) | 2020-10-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103898836B (en) | Cable stayed bridge H type Sarasota height top rail steel battered leg prestress stent construction method | |
| CN111851317B (en) | Method for installing arch ring of arch bridge | |
| JP6752160B2 (en) | Mobile work vehicle | |
| CN110331668A (en) | A kind of back-cable-free cable-stayed bridge inclined in two-way V-shaped bridge tower construction method | |
| JP4403051B2 (en) | Corrugated steel web bridge construction method | |
| CN108265885A (en) | The construction method of tall and big nonopiate high inclination-angle abnormal shape concrete batter post | |
| CN101158146A (en) | Cable-stayed bridge main-beam sliding form frame system and construction method | |
| CN107882328B (en) | Construction method of large-span steel truss suspension structure | |
| CN104314013B (en) | Two Cantilever Construction Methods of a kind of pole asymmetrical array beam | |
| CN107524096A (en) | A kind of continuous girders by suspension grouting 0# blocks cast-in-place support and erection method | |
| JP4104910B2 (en) | How to build arch ribs for concrete arch bridges | |
| CN111877126B (en) | Method for installing arch ring of arch bridge | |
| CN113123597A (en) | Assembled laminated slab splicing seam suspension type formwork structure and construction method thereof | |
| JP4057724B2 (en) | Support structure of bridge girder in extrusion method | |
| CN107142834B (en) | A kind of Through Steel pipe concrete tie-rod arch bridge abutment steel pipe location structure and its construction method | |
| CN110847039B (en) | Full cantilever installation method of segmental precast concrete box girder | |
| CN207891754U (en) | A kind of continuous girders by suspension grouting 0# block cast-in-place supports | |
| CN217026746U (en) | Bridge No. 0 piece construction auxiliary device | |
| CN208857960U (en) | A kind of Large-Span Continuous domes and its top plate supporting system | |
| CN113737661A (en) | Construction method for steel-concrete combined section of tower base of cable-stayed bridge | |
| CN215857303U (en) | Reinforcing mechanism for prestressed concrete box girder | |
| CN110847057A (en) | Flexible connection structure for continuous box girder cantilever casting | |
| CN111005302B (en) | Steel anchor beam mounting method | |
| CN202266021U (en) | Shaping beam die plate reinforcing tool | |
| CN213681745U (en) | Novel formwork device for cast-in-situ anchor beam of decorative cable-stayed bridge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |