CN112962443A - Modularization equipment expansion joint structure suitable for steel box girder bridge - Google Patents
Modularization equipment expansion joint structure suitable for steel box girder bridge Download PDFInfo
- Publication number
- CN112962443A CN112962443A CN202110208297.0A CN202110208297A CN112962443A CN 112962443 A CN112962443 A CN 112962443A CN 202110208297 A CN202110208297 A CN 202110208297A CN 112962443 A CN112962443 A CN 112962443A
- Authority
- CN
- China
- Prior art keywords
- end plate
- movable connecting
- connecting plate
- plate
- steel box
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 44
- 239000010959 steel Substances 0.000 title claims abstract description 44
- 238000010276 construction Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
- E01D19/065—Joints having sliding plates
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
A modular assembly expansion joint structure suitable for a steel box girder bridge relates to the field of bridge structures. The modular assembly expansion joint structure suitable for the steel box girder bridge comprises a first end plate, a second end plate and at least one pair of a first movable connecting plate and a second movable connecting plate, wherein the first end plate and the first movable connecting plate, the first movable connecting plate and the corresponding second movable connecting plate and the second movable connecting plate are hinged through telescopic hinge parts respectively; the telescopic hinged parts comprise two hinged rods which are arranged in a crossed mode and are hinged with each other at the middle parts, the two ends of each hinged rod in each telescopic hinged part are respectively hinged with a fixed hinged shaft and a liftable lifting hinged shaft, and lifting holes for the lifting hinged shafts to penetrate through and lift are respectively formed in the first end plate, the second end plate, the first movable connecting plate and the second movable connecting plate. The modular assembly expansion joint structure suitable for the steel box girder bridge has convenient assembly and disassembly, and can adapt to expansion joints with different widths so as to improve the driving comfort and the smoothness.
Description
Technical Field
The application relates to the field of bridge structures, in particular to a modular assembly expansion joint structure suitable for a steel box girder bridge.
Background
Along with economic development in China, urban scale is rapidly enlarged, high-grade highway mileage represented by highways and municipal roads and the number of bridges are rapidly increased, and steel box girder bridges are increasingly used in engineering implementation because the steel box girder bridges have the advantages of smaller height, low life cycle cost, assembly construction and the like compared with concrete girder bridges in the same span.
However, with the increasing of traffic volume, the damage of the bridge expansion joint, which is a part directly bearing the repeated impact of the wheel load after being exposed in the air for a long time, is more prominent, and meanwhile, because the conventional expansion joint is usually formed by pouring and fixing the expansion device and the steel box girder by using concrete, the poured concrete needs to be chiseled off when the expansion joint is replaced, and the concrete needs to be poured again after the expansion joint is reinstalled, so that the problems of long traffic closure time, large field pollution and the like during replacement operation are caused, and bad social influence and large economic cost are easily caused in the central section of the city.
Therefore, the damaged expansion joint structure of the steel box girder bridge can be replaced quickly, with low pollution or even with zero pollution, so as to meet the use requirement.
Disclosure of Invention
An object of the application provides a modularization equipment expansion joint structure suitable for steel box girder bridge, and it has the loading and unloading convenience, and the expansion joint that can effectively adapt to different width is in order to improve the driving travelling comfort and guarantee the driving compliance.
The embodiment of the application is realized as follows:
the embodiment of the application provides a modular assembly expansion joint structure suitable for a steel box girder bridge, which comprises a first end plate and a second end plate which are respectively connected with two steel box girders at two sides of the expansion joint, and at least one pair of a first movable connecting plate and a second movable connecting plate which are arranged between the first end plate and the second end plate, wherein the first end plate and the first movable connecting plate, the first movable connecting plate and the corresponding second movable connecting plate, and the second movable connecting plate and the second end plate are respectively hinged through telescopic hinge parts; the telescopic articulated elements comprise two articulated rods which are arranged in an intersecting manner and are mutually articulated at the middle parts, one end of each articulated rod in each telescopic articulated element is articulated with a fixed articulated shaft, the other end of each articulated rod is articulated with a liftable lifting articulated shaft, and lifting holes for the lifting articulated shafts to pass through and lift are respectively formed in the first end plate, the second end plate, the first movable connecting plate and the second movable connecting plate.
In some optional embodiments, the first end plate and the second end plate are C-shaped steel bars arranged oppositely, the bottom parts of the first end plate and the second end plate are respectively connected with the two steel box girders, and the top part of the second end plate is slidably inserted inside the top part of the first end plate.
In some alternative embodiments, a first glide plate is attached to the top inner wall of the first end plate in sliding engagement with the top outer wall of the second end plate.
In some alternative embodiments, a second sliding plate is connected to the inner wall of the top of the second end plate and is in sliding fit with the tops of the first movable connecting plate and the second movable connecting plate.
In some optional embodiments, a third sliding plate which is in sliding fit with the bottoms of the first movable connecting plate and the second movable connecting plate is connected to the inner bottom wall of the first end plate and the second end plate respectively.
In some alternative embodiments, the same fixed hinge axis or lifting hinge axis is hinged between the ends of the hinge rods in adjacent telescopic hinges.
The beneficial effect of this application is: the modular assembly expansion joint structure suitable for the steel box girder bridge provided by the embodiment comprises a first end plate and a second end plate which are respectively connected with two steel box girders at two sides of the expansion joint, and at least one pair of a first movable connecting plate and a second movable connecting plate which are arranged between the first end plate and the second end plate, wherein the first end plate and the first movable connecting plate, the first movable connecting plate and the corresponding second movable connecting plate, and the second movable connecting plate and the second end plate are respectively hinged through telescopic hinge parts; the telescopic articulated elements comprise two articulated rods which are arranged in an intersecting manner and are mutually articulated at the middle parts, one end of each articulated rod in each telescopic articulated element is articulated with a fixed articulated shaft, the other end of each articulated rod is articulated with a liftable lifting articulated shaft, and lifting holes for the lifting articulated shafts to pass through and lift are respectively formed in the first end plate, the second end plate, the first movable connecting plate and the second movable connecting plate. The modularization equipment expansion joint structure that is applicable to steel box girder bridge that this embodiment provided has the loading and unloading convenience, and can effectively adapt to the expansion joint of different width in order to improve the driving travelling comfort and guarantee driving smooth nature.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic cross-sectional structural view of a modular assembled expansion joint structure suitable for a steel box girder bridge according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a first end plate, a first swing joint plate, a second swing joint plate and a second end plate in the modular assembly expansion joint structure suitable for a steel box girder bridge provided in the embodiment of the present application.
In the figure: 100. a first end plate; 110. a second end plate; 120. a first movable connecting plate; 130. a second swing link plate; 140. a lifting hole; 150. a first slide plate; 160. a second slide plate; 170. a third slide plate; 180. a hinge portion; 200. a telescopic hinge; 210. a hinged lever; 220. fixing a hinged shaft; 230. lifting and lowering the hinged shaft; 300. a steel box girder.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The characteristics and performance of the modular assembled expansion joint structure suitable for the steel box girder bridge of the present application are further described in detail with reference to the following embodiments.
As shown in fig. 1 and 2, an embodiment of the present application provides a modular assembly expansion joint structure suitable for a steel box girder bridge, which is installed at an expansion joint between two steel box girders 300, and includes a first end plate 100 and a second end plate 110 connected to the two steel box girders 300 at two sides of the expansion joint, the first end plate 100 and the second end plate 110 are C-shaped steel sections arranged oppositely, bottoms of the first end plate 100 and the second end plate 110 are connected to the two steel box girders 300, respectively, a top of the second end plate 110 is slidably inserted into an inner side of a top of the first end plate 100, two pairs of first movable connection plates 120 and second movable connection plates 130 are disposed between the first end plate 100 and the second end plate 110, two pairs of first movable connection plates 120 and second movable connection plates 130 are hinged between the first end plate 100 and the first movable connection plates 120, between the first movable connection plates 120 and the corresponding second movable connection plates 130, and between the second movable connection plates 130 and the second end plates 110 through a telescopic, the first end plate 100 and the second end plate 110 are respectively provided with a hinge part 180 hinged with the telescopic hinge 200; each telescopic hinge 200 comprises two hinge rods 210 which are arranged in a crossed manner and are hinged with each other at the middle part, one end of each hinge rod 210 in each telescopic hinge 200 is hinged with a fixed hinge shaft 220, the other end of each hinge rod is hinged with a lifting hinge shaft 230 capable of being lifted, lifting holes 140 for the lifting hinge shaft 230 to penetrate and lift are respectively arranged on the hinge part 180 of the first end plate 100 and the second end plate 110 and on the first movable connecting plate 120 and the second movable connecting plate 130, the same fixed hinge shaft 220 is hinged between the end parts of one hinge rod 210 of three adjacent telescopic hinges 200 between the first end plate 100 and the first movable connecting plate 120, between the first movable connecting plate 120 and the corresponding second movable connecting plate 130 and between the second movable connecting plate 130 and the second end plate 110, the hinge parts of the first end plate 100 and the first movable connecting plate 120, between the first movable connecting plate 120 and the corresponding second movable connecting plate 130, The same elevation hinge shaft 230 is hinged between the ends of the other hinge rod 210 of the three adjacent telescopic hinges 200 between the second movable connecting plate 130 and the second end plate 110; the top inner wall of the first end plate 100 is connected with a first sliding plate 150 in sliding fit with the top outer wall of the second end plate 110, the top inner wall of the second end plate 110 is connected with a second sliding plate 160 in sliding fit with the tops of the first movable connecting plate 120 and the second movable connecting plate 130, and the bottom inner walls of the first end plate 100 and the second end plate 110 are respectively connected with a third sliding plate 170 in sliding fit with the bottoms of the first movable connecting plate 120 and the second movable connecting plate 130.
The modular assembly expansion joint structure suitable for the steel box girder bridge provided by this embodiment is characterized in that the adjacent ends of two steel box girders 300 are respectively connected with a first end plate 100 and a second end plate 110 of a C-shape which are oppositely arranged, and the bottoms of the first end plate 100 and the second end plate 110 are respectively connected with the two steel box girders 300, the top of the second end plate 110 is slidably inserted into the inside of the top of the first end plate 100, meanwhile, two pairs of first movable connecting plates 120 and second movable connecting plates 130 are respectively arranged between the first end plate 100 and the second end plate 110, and the first movable connecting plates 120 and the corresponding second movable connecting plates 130, the second movable connecting plates 130 and the second end plates 110 are respectively hinged by one expansion hinge 200, each expansion hinge 200 comprises two hinge rods 210 which are arranged in a crossed manner and are hinged to each other at the middle part, one end of each hinge rod 210 in each expansion hinge 200 is hinged to a fixed hinge shaft 220, the other end is hinged with a lifting hinge shaft 230 capable of lifting. In the modular assembly expansion joint structure suitable for the steel box girder bridge provided by this embodiment, the hinge rods 210 of three adjacent telescopic hinge members 200 are respectively hinged to the fixedly arranged fixed hinge shafts 220 through the liftable lifting hinge shafts 230, so that the modular assembly expansion joint structure suitable for the steel box girder bridge can be driven to move in the horizontal direction when the two steel box girders 300 are horizontally displaced, and the telescopic hinge members 200 of the three telescopic hinge members 200 are driven to rotate around the hinged positions of the middle parts of the two hinge rods 210, the lifting hinge shafts 230 and the fixed hinge shafts 220, so that the telescopic hinge members 200 are extended or shortened to realize the expansion buffering function of the expansion joint; the inner wall of the top of the first end plate 100 is connected with a first sliding plate 150 in sliding fit with the outer wall of the top of the second end plate 110, the inner wall of the top of the second end plate 110 is connected with a second sliding plate 160 in sliding fit with the tops of the first movable connecting plate 120 and the second movable connecting plate 130, and the inner walls of the bottoms of the first end plate 100 and the second end plate 110 are respectively connected with a third sliding plate 170 in sliding fit with the bottoms of the first movable connecting plate 120 and the second movable connecting plate 130, so that the C-shaped cantilever extending parts of the first end plate 100 and the second end plate 110 are effectively supported while the first sliding plate 150, the second sliding plate 160 and the third sliding plate 170 are horizontally displaced along with the telescopic hinge 200, and the safety and the driving comfort of the structure are improved. Three flexible articulated elements 200 modules in the modularization equipment expansion joint structure suitable for steel box girder bridge can be assembled in advance at the mill and accomplish, the scene only needs to first end plate 100, second end plate 110 carries out welded connection with two steel box girders 300, later with three flexible articulated elements 200, first swing joint board 120 and second swing joint board 130 and first end plate 100, second end plate 110 is articulated can, not only the construction speed is fast, also all use mechanical connection can not produce the pollution, flexible articulated elements 200 that form through the assembly of the hinge bar 210 of selecting different length simultaneously makes it can adapt to different seam width demands in order to improve the driving travelling comfort and guarantee the driving and lead to the nature, change at any time in convenient construction and the follow-up bridge maintenance process and in order to adapt to the user demand, thereby effectual saving construction and maintenance cost.
The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Claims (6)
1. A modular assembly expansion joint structure suitable for a steel box girder bridge is characterized by comprising a first end plate and a second end plate which are respectively connected with two steel box girders at two sides of the expansion joint, and at least one pair of a first movable connecting plate and a second movable connecting plate which are arranged between the first end plate and the second end plate, wherein the first end plate and the first movable connecting plate, the first movable connecting plate and the second movable connecting plate which correspond to the first movable connecting plate, and the second movable connecting plate and the second end plate are respectively hinged through telescopic hinged parts; the telescopic articulated elements comprise two articulated rods which are arranged in an intersecting manner and are mutually articulated at the middle parts, each articulated rod in the telescopic articulated elements is articulated with a fixed articulated shaft at one end, the other end of each articulated rod is articulated with a liftable lifting articulated shaft, and the first end plate, the second end plate, the first movable connecting plate and the second movable connecting plate are respectively provided with a lifting hole for the lifting articulated shaft to pass through and lift.
2. The modular assembly expansion joint structure suitable for steel box girder bridges of claim 1, wherein the first end plate and the second end plate are C-shaped steel bars arranged oppositely, the bottom of the first end plate and the bottom of the second end plate are respectively connected with the two steel box girders, and the top of the second end plate is slidably inserted into the inner side of the top of the first end plate.
3. The modular assembly expansion joint structure suitable for the steel box girder bridge of claim 2, wherein the top inner wall of the first end plate is connected with a first sliding plate which is in sliding fit with the top outer wall of the second end plate.
4. The modular assembly expansion joint structure suitable for the steel box girder bridge of claim 2, wherein the inner wall of the top of the second end plate is connected with a second sliding plate which is in sliding fit with the tops of the first movable connecting plate and the second movable connecting plate.
5. The modular assembly expansion joint structure suitable for the steel box girder bridge of claim 1, wherein the inner bottom walls of the first end plate and the second end plate are respectively connected with a third sliding plate which is in sliding fit with the bottoms of the first movable connecting plate and the second movable connecting plate.
6. The modular assembly expansion joint structure for steel box girder bridges of claim 1, wherein the end portions of the hinge rods of the adjacent telescopic hinge members are hinged with the same fixed hinge shaft or lifting hinge shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110208297.0A CN112962443B (en) | 2021-02-24 | 2021-02-24 | Modularized assembled expansion joint structure suitable for steel box girder bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110208297.0A CN112962443B (en) | 2021-02-24 | 2021-02-24 | Modularized assembled expansion joint structure suitable for steel box girder bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112962443A true CN112962443A (en) | 2021-06-15 |
| CN112962443B CN112962443B (en) | 2024-01-23 |
Family
ID=76285990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110208297.0A Active CN112962443B (en) | 2021-02-24 | 2021-02-24 | Modularized assembled expansion joint structure suitable for steel box girder bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112962443B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201334642Y (en) * | 2008-12-24 | 2009-10-28 | 徐斌 | Bridge expansion joint device for resisting super vertical angle dislocation |
| CN204475165U (en) * | 2015-02-15 | 2015-07-15 | 谢书合 | A kind of bridge type steel expansion joint limiting structure |
| KR101881578B1 (en) * | 2017-09-18 | 2018-07-24 | 우경기술주식회사 | Bridge comprising monolithic structure of girder and pier and construction method for the same |
| CN108532454A (en) * | 2018-03-15 | 2018-09-14 | 南安市创培电子科技有限公司 | Highway-bridge Expansion Joints construct |
| CN109629408A (en) * | 2019-01-08 | 2019-04-16 | 中冶南方工程技术有限公司 | A kind of Double slit type expansion joint of comb plate |
-
2021
- 2021-02-24 CN CN202110208297.0A patent/CN112962443B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201334642Y (en) * | 2008-12-24 | 2009-10-28 | 徐斌 | Bridge expansion joint device for resisting super vertical angle dislocation |
| CN204475165U (en) * | 2015-02-15 | 2015-07-15 | 谢书合 | A kind of bridge type steel expansion joint limiting structure |
| KR101881578B1 (en) * | 2017-09-18 | 2018-07-24 | 우경기술주식회사 | Bridge comprising monolithic structure of girder and pier and construction method for the same |
| CN108532454A (en) * | 2018-03-15 | 2018-09-14 | 南安市创培电子科技有限公司 | Highway-bridge Expansion Joints construct |
| CN109629408A (en) * | 2019-01-08 | 2019-04-16 | 中冶南方工程技术有限公司 | A kind of Double slit type expansion joint of comb plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112962443B (en) | 2024-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103255726B (en) | A kind of construction method of continuous beam arch combination bridge | |
| KR101391637B1 (en) | Constrution methoed for Prestressed Composite Truss girder using steel truss member | |
| CN214291685U (en) | Anti-deformation jig frame for slidable track | |
| CN112411352A (en) | Assembled steel-concrete combined rigid frame bridge and construction method thereof | |
| CN112962443A (en) | Modularization equipment expansion joint structure suitable for steel box girder bridge | |
| CN109098094A (en) | Construction method without bracket horizontal splicing corrugated steel web plate combined box girder | |
| CN210066504U (en) | Large-span cantilever truss type bent cap support system | |
| CN209907208U (en) | Wave form steel web continuous beam bridge side span folds cast-in-place supporting structure | |
| CN114016420B (en) | Single pier column steel bridge assembly type construction method | |
| CN109629454B (en) | Bridging equipment and bridging method for lifting segmental beam on single side | |
| CN113944103A (en) | Assembled support device applied to installation of steel box girder road-crossing bridge and construction method | |
| CN112458878A (en) | Segmental assembling steel-concrete combined continuous beam and construction method thereof | |
| CN206581682U (en) | A kind of interim transition structure in jacking framed bridge steel column for contacting net basis | |
| CN111877121A (en) | Novel tied arch bridge structure and auxiliary tied bar arrangement method | |
| CN111851318A (en) | Cantilever bridge side span formwork system and construction method thereof | |
| CN219384698U (en) | Novel movable operation platform for bridge reinforcement and maintenance | |
| CN206956569U (en) | A kind of Bridge Support Replacement platform | |
| CN218756948U (en) | Layered steel box girder | |
| CN215790652U (en) | Automatic gap bridge device for still kettle track | |
| CN216474479U (en) | Full-life telescoping device for bridge | |
| CN216999333U (en) | Temporary turnover hinged support convenient for folding and fixing steel truss girder | |
| CN216444913U (en) | Pass power in existing post and set up tower crane structure between floor | |
| CN218520872U (en) | Bent cap hoist device | |
| CN217394103U (en) | Collecting device is accepted to wet seam welding slag | |
| CN220364875U (en) | Inner top plate die carrier of bridge box girder |
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 |