CN115897387B - A method for erecting curved bridges - Google Patents
A method for erecting curved bridgesInfo
- Publication number
- CN115897387B CN115897387B CN202211031191.9A CN202211031191A CN115897387B CN 115897387 B CN115897387 B CN 115897387B CN 202211031191 A CN202211031191 A CN 202211031191A CN 115897387 B CN115897387 B CN 115897387B
- Authority
- CN
- China
- Prior art keywords
- bridge
- span
- support leg
- girder
- erecting
- 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
Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a curve bridge erection method, which aims to solve the problem that bridge erection machines are difficult to cross due to the fact that the operation space of the existing bridge close to a tunnel portal is small, and further provides a tunnel small space precast beam erection technology. By adopting the method, the problem of difficult erection of the tunnel portal bridge precast beam can be effectively solved.
Description
Technical Field
The invention relates to the technical field of bridge construction operation, in particular to a method for erecting a small-curve-radius separated highway bridge adjacent to a tunnel portal.
Background
At present, in the bridge erection construction process, a large number of bridge tunnels are connected, and the bridge construction is difficult to realize through the tunnel girder. The main reason is that the whole machine height and width of the large-tonnage bridge girder erection machine exceed the size of the tunnel clearance, so the bridge girder erection machine must be refitted to reduce the height and width when passing through the tunnel, and then the bridge girder erection machine is carried forward by a girder carrier. Therefore, how to solve the construction problem has long become a hot subject at home and abroad.
The invention discloses a girder erecting method of a bridge temporary bridge matched with a girder erecting machine at a tunnel exit, which comprises the steps of erecting an auxiliary temporary bridge on a hole site to be erected in advance to serve as a working platform, erecting a six-four temporary bridge by a longitudinal girder erecting method, longitudinally dragging the auxiliary temporary bridge in place in a cantilever girder mode and falling the auxiliary temporary bridge piece by piece, paving a bridge deck, carrying the girder erecting machine to a designated position of the temporary bridge at the tunnel exit in a low position by a girder transporting vehicle, lifting the girder erecting machine to a working condition height of the girder erecting machine by a girder lifting vehicle lifting cylinder telescopic sleeve, connecting a rear supporting leg upper beam with a temporary supporting leg, turning back a front supporting leg to form a stress fulcrum, withdrawing the girder transporting vehicle, enabling a cylinder and the telescopic sleeve on the rear supporting leg to correspond to the girder erecting machine, lifting the temporary supporting leg telescopic sleeve, removing the temporary supporting leg, installing a rear supporting leg lower beam with a travelling platform, lifting and dismantling the temporary bridge by a front and rear girder lifting crane, placing the girder lifting vehicle to return to a girder taking position by the girder lifting vehicle, and lifting the girder to a girder feeding position by the front and rear girder lifting crane. The tunnel outlet erection method solves the problem that the bridge girder erection machine is not used for whole-hole integral erection of prestressed concrete box girders adjacent to the tunnel outlet in the quasi-high-speed and high-speed railways, has the characteristics of saving engineering investment and shortening construction period, but the proposal is applied to small-radius curve bridges, has the problem of difficult girder feeding, and the proposal is to replace the girder erection method of the bridge girder erection machine, and has no effective solution for bridge construction.
Disclosure of Invention
In order to solve the problems, the invention discloses a curve bridge erection method, which aims to solve the problem that a bridge girder erection machine is difficult to span due to the fact that the operation space of a bridge close to a tunnel portal is small in the prior art, and further provides a tunnel small space precast girder erection technology. By adopting the method, the problem of difficult erection of the tunnel portal bridge precast beam can be effectively solved.
The technical scheme adopted by the invention is as follows:
the invention discloses a method for erecting a curved bridge, wherein prefabricated beams are uniformly processed by a prefabricated field, transportation and erection can be carried out after the strength reaches 100%, and girder erection construction can be organized after the construction of a lower structure of the bridge is completed and the strength reaches 100%.
Meanwhile, the temporary parking platform of the girder transporting vehicle is fully considered, temporary supporting measures are timely made after the side beam installation operation is completed, so that the situation that the overturning accident does not occur is ensured, and the bridge deck system construction is timely unfolded after the erection is completed. And (3) carrying out beam conveying and beam feeding on the beams to be erected through a beam conveying vehicle, erecting by using a bridge girder erection machine, and selecting an assembly site of the bridge girder erection machine on the filled road base surface.
The invention discloses a method for erecting a curved bridge, which comprises the steps of pre-stressing concrete box girders, wherein the pre-stressing concrete box girders are arranged adjacent to a tunnel outlet, the whole hole of the bridge girder erection machine is used for integrally erecting the prestressed concrete box girder, which comprises the following steps:
S1, a first span comprising bridge piers and provided with prestressed concrete box girders is assembled by a bridge girder erection machine by utilizing the bridge piers, the girder of the bridge girder erection machine is set to be 12m pieces, the girder is assembled to form a 36m girder, the girder is assembled to be 12m in a connecting area of a bridge and a tunnel, and at the moment, the bridge girder erection machine is assembled to be 48m and stretches into the tunnel to be 4m;
S2, hoisting the side beams to the front span position of the middle beam by using a gun carriage, dismantling the rear guide beam with the outer side of 12m, transversely moving the bridge girder carrying machine to the side beam installation position, and stably falling after adjusting the installation position;
s3, after the first span side beam is erected, mounting the dismantled 12m outer side rear guide beam, longitudinally moving the middle beam to a front span position by a beam transporting vehicle, transversely moving and adjusting the erection position, and then falling, wherein the first span is erected without a through hole;
And S4, after the bridge comprises a front supporting leg, a middle supporting leg and a rear supporting leg, a crane is adopted as a counterweight after the construction of Liang Tidi spans is completed, the main beam is driven to longitudinally move forwards by a driving mechanism on the middle supporting leg to cantilever for 12m, the upper part of the front supporting leg is firmly connected with the lower chord of the main beam, the middle supporting leg is firmly connected with the lower chord of the main beam, at the moment, the bridge girder erection machine is used for installing the rest 12m main beam, the assembly of all main beams 60m of the bridge girder erection machine is completed, and the bridge girder erection machine after the bridge girder erection machine is qualified in debugging is longitudinally moved forwards through a hole to prepare for the installation of a next hole girder piece.
Further, the curve bridge adopts a small curve radius separation type bridge, and the adjacent clear distance between the abutment of the bridge and the tunnel is 14m.
Further, the prestressed concrete box girder is installed according to a left frame, the left frame is in a position of 14# to 0# and is disassembled and assembled once before a roadbed field level is 0# after erection is completed, a right frame is erected after turning around conversion, the right frame is in a position of 0# to 14# and a bridge girder erection machine is disassembled and completed at a roadbed at a tunnel outlet after erection is completed.
When the bridge girder erection machine longitudinally displaces, the rear part of the bridge girder erection machine with an 80T crane is used as a counterweight, a wooden wedge plug travelling wheel is adopted, and a steel wire rope is connected with the main girder;
Further, in step S4, the main beam of the bridge girder erection machine is driven by the driving mechanism on the middle supporting leg and the power of the rear girder transporting flatcar to move forward to the position where the front supporting leg of the guide beam is positioned on the front pier cap, the jack of the front supporting leg of the guide beam is used for lifting the jack, the level of the guide beam and the main beam is adjusted, the front supporting leg of the main beam moves to the position of the cloud top of the front pier cap through the hanging device, the traveling box and the steel rail fall down, the required height is adjusted, and the front supporting leg and the front pier cap are firmly connected.
Further, the front support leg of the guide beam is retracted, the main beam is driven to move forward to a working position continuously by means of driving mechanisms on the front support leg and the middle support leg and the power of the beam transporting flatcar, the upper part of the front support leg is firmly connected with the lower chord of the main beam, the upper part of the middle support leg is firmly connected with the lower chord of the main beam, and at the moment, the bridge girder erection machine completes no-load forward movement of the main beam.
After the bridge girder erection machine is longitudinally operated in place, a comprehensive safety inspection is required. After the bridge girder erection machine operates normally, the girder installation operation can be performed.
Further, when the bridge with the small curve radius is fed, the last section of 12m main beam at the inner side of the curve is required to be dismantled, and the traffic flat vehicle beam is conveyed to the rear supporting leg position at the tail part of the bridge girder erection machine, so that commanders need to pay close attention to the front movement of the traffic flat vehicle, and the commanders are prevented from touching the rear support.
Further, the tail of the bridge girder erection machine transversely moves to align with the transverse moving track, and the No. 1 crown block vertically lifts the girder body when feeding the girder, so that the girder body is separated from the surface of the trolley, the rear supporting leg is temporarily supported, and meanwhile, the rope arrangement and the braking of the winding drum are checked.
Further, the 1# crown block and the rear beam transporting flat block are matched with a forward beam moving body, when the 1# crown block moves forward to the middle of the front bracket 1/2 and the rear bracket 1/2, the guide beam is checked to prevent deformation, and when the 2# crown block is at a lifting point, parking brake is carried to a beam supporting position by using the 2# crown block to lift the beam body.
Further, the beam is lifted once before being lifted, a beam protection iron tile or a rubber pad is used during beam bundling, a bottom is used for lifting, a lifting command slowly lifts a hook, the hook is stopped after the binding rope is slightly stressed, whether the lifting hook is vertical or not is observed, adjustment is needed, after the beam is bundled, a field winding machine is subjected to a braking test for 2-3 times, the beam is lifted a little, whether a steel rope has a jump groove, whether a hanging bracket bolt has a jump or not is checked, and the fact that the beam can be formally operated after the beam is bundled is confirmed.
Further, when the bridge girder erection machine erects the first span girder, the middle supporting leg is arranged on the bridge abutment, the foundation under the middle supporting leg transverse girder is compacted, so that accidents caused by sinking of the bridge girder erection machine in the girder erecting process are prevented, and before the front supporting leg longitudinally moves, the height of the front supporting leg is adjusted to meet the installation requirement, so that the front supporting leg can be smoothly positioned.
The invention has the following technical effects:
the invention discloses a method for erecting a curved bridge, which effectively solves the problem of difficult erection of a tunnel portal bridge precast beam.
The specific contents are as follows:
1. The invention utilizes the bridge abutment to carry out the bridge girder erection technology, completes the erection of the first span precast beam for bridge-tunnel connection, improves the precast beam erection efficiency, improves the construction progress and provides convenience for the construction of organization site.
2. The method for splicing the bridge girder erection machine at the tunnel portal and erecting the first span has the advantages of effectively solving the problem that the bridge girder erection machine cannot be used for integrally erecting the prestressed concrete box girder adjacent to the tunnel portal in the whole hole in bridge construction, saving engineering investment and shortening construction period.
3. The invention adopts the bridge girder erection machine as the self-balancing double-guide girder, utilizes the self mechanism of the bridge girder erection machine, does not need to add any new auxiliary special equipment, is convenient and quick, and is safe and reliable to operate and use.
4. The invention solves the difficult problem of feeding the small-radius curve bridge, and is safer and more convenient compared with a double-machine tower crane.
Drawings
FIG. 1 is an elevation view of a first side rail mounting of the present invention;
FIG. 2 is a plan view of a first span side rail mounting of the present invention;
FIG. 3 is a first cross-over finished elevation of the present invention;
FIG. 4 is a first erection-finished plan view of the present invention;
FIG. 5 is a front elevation view of the girder-feeding bridge girder erection machine of the present invention;
FIG. 6 is a plan view of the forward movement of the girder-feeding bridge girder erection machine of the present invention;
FIG. 7 is a plan view of a curvilinear bridge of the present invention;
The drawing shows a 1-prestressed concrete box girder, a 2-tunnel, a 3-bridge girder erection machine, a 4-main girder, a 5-guide girder, a 6-front supporting leg, a 7-middle supporting leg, an 8-rear supporting leg, a 9-bridge abutment and a 10-crown block.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent.
In the present embodiment, the data is a preferred embodiment, but is not intended to limit the present invention.
As shown in fig. 1 to 7, the present embodiment provides a method for erecting a curved bridge, including a prestressed concrete box girder, the prestressed concrete box girder being disposed adjacent to a tunnel exit, and integrally erecting the prestressed concrete box girder using a whole hole of a bridge girder erection machine, including the steps of:
S1, a first span comprising bridge piers and provided with prestressed concrete box girders is assembled by a bridge girder erection machine by utilizing the bridge piers, the girder of the bridge girder erection machine is set to be 12m pieces, the girder is assembled to form a 36m girder, the girder is assembled to be 12m in a connecting area of a bridge and a tunnel, and at the moment, the bridge girder erection machine is assembled to be 48m and stretches into the tunnel to be 4m;
S2, hoisting the side beams to the front span position of the middle beam by using a gun carriage, dismantling the rear guide beam with the outer side of 12m, transversely moving the bridge girder carrying machine to the side beam installation position, and stably falling after adjusting the installation position;
s3, after the first span side beam is erected, mounting the dismantled 12m outer side rear guide beam, longitudinally moving the middle beam to a front span position by a beam transporting vehicle, transversely moving and adjusting the erection position, and then falling, wherein the first span is erected without a through hole;
And S4, after the bridge comprises a front supporting leg, a middle supporting leg and a rear supporting leg, a crane is adopted as a counterweight after the construction of Liang Tidi spans is completed, the main beam is driven to longitudinally move forwards by a driving mechanism on the middle supporting leg to cantilever for 12m, the upper part of the front supporting leg is firmly connected with the lower chord of the main beam, the middle supporting leg is firmly connected with the lower chord of the main beam, at the moment, the bridge girder erection machine is used for installing the rest 12m main beam, the assembly of all main beams 60m of the bridge girder erection machine is completed, and the bridge girder erection machine after the bridge girder erection machine is qualified in debugging is longitudinally moved forwards through a hole to prepare for the installation of a next hole girder piece.
In the embodiment, the bridge is adjacent to a structure tunnel, and the bridge-tunnel roadbed is only 14m and cannot be assembled according to a conventional bridge erecting method.
In the embodiment, the first span is assembled by directly utilizing bridge piers, the bridge span is 30m, the bridge girder of the bridge girder erection machine is 12m, the length of the bridge girder is 36m, then the bridge girder is assembled in a bridge tunnel connection area, 48m of the bridge girder erection machine is completed, the bridge girder extends into a tunnel 4m, a gun carriage lifts the side girder to a front span position of the middle girder, the outer side rear guide girder is removed for 12m, the whole machine carrier beam transversely moves to a side girder installation position, the accuracy of the position is checked, and the bridge girder stably falls after confirmation. After the first span side beam is erected, the outer rear side 12m main beam removed before is installed, the beam transporting vehicle longitudinally moves the middle beam to the front span position, transversely moves to the erection position and then falls down, and the first span is erected without a through hole.
In this embodiment, because the outer 12m main beam is blocked when laterally moving, so that the beam body cannot laterally move, the bridge girder erection machine needs to dismantle the rear guide beam of the outer 12m after lifting the side beam to the middle position.
In the embodiment, after Liang Tidi spans are erected, an 80T crane is used as a counterweight, the main beam is driven by a driving mechanism on the middle supporting leg to longitudinally move forward to cantilever for 12m, then the upper part of the front supporting leg is firmly connected with the lower chord of the main beam, the middle supporting leg is firmly connected with the lower chord of the main beam, the bridge girder erection machine is used for installing the rest 12m main beams, 60m assembly of all main beams of the bridge girder erection machine is completed at the moment, in the embodiment, each span is erected for 30m, the span passing condition is achieved, and the bridge girder erection machine after qualified debugging is longitudinally moved forward through a hole to prepare the installation of the next hole girder piece.
As shown in FIG. 7, the prestressed concrete box girder is installed according to the left frame, the left frame is at the position of 14# to 0# and is disassembled and assembled once before the 0# roadbed field level after the erection is completed, the turning-around conversion is completed to erect the right frame, the right frame is at the position of 0# to 14# and the bridge girder erection machine is disassembled and assembled at the roadbed at the tunnel outlet after the erection is completed, preferably, in the embodiment, the bridge girder erection machine does not carry out via holes and is assembled by directly adopting the piers of 13# and 14#, so that the bridge girder erection machine can erect the first span without being assembled to 60 m.
The conventional bridge girder erection machine is assembled by adopting one-time assembly of 60m main girders, in the embodiment, 2/3L of cantilever of the bridge girder erection machine can be used for carrying out via holes, the bridge is erected by the erection method of the embodiment to be 30m, and the standard requirement can be met by assembling 50 m.
The conventional beam feeding method is that a gun carriage transports a beam body to the bottom of a bridge girder erection machine, the front and rear crown blocks of the bridge girder erection machine hoist beams, the beam body is moved to a preset front span position, and the beams fall, and the conventional beam feeding method is suitable for bridges with straight line segments or large curves.
In the embodiment, the curve bridge adopts a small curve radius separated bridge, the adjacent clear distance between the bridge abutment and the tunnel of the bridge is 14m, and the small radius narrow curve beam feeding technology is applied to bridge construction, and the bridge girder at the rear side 12m of the bridge girder erection machine is removed, so that a commander needs to pay close attention to the front movement of the bridge girder transportation flatbed to the rear position of the rear supporting leg at the tail part of the bridge girder erection machine, and the bridge girder transportation flatbed is prevented from touching the rear supporting leg. Firstly, the tail of the bridge girder erection machine transversely moves to align with a transverse moving track, and a 1# crown block vertically lifts a girder body when feeding girders, so that the girder body is separated from a trolley surface, a rear supporting leg is temporarily supported, and meanwhile, reel rope arrangement and braking are checked.
Further, the crown block 1# and the rear girder transporting flat car are matched with the forward girder moving body, and when the crown block 1# is moved forward to the middle of the front and rear brackets 1/2, the deformation of the girder guide should be closely paid attention. And when the No. 2 crown block is at the lifting point, stopping braking. Lifting beam body by using No. 2 crown block to the girder erection site. And after the beam sheets in each hole are erected, splicing the 12m main beams to move forward to pass through the holes.
In the embodiment, the bridge girder erection machine comprises a girder erection length of 60m and the girder erection vehicle comprises a girder erection length of 30m, at this time, the projection area is above 90m, the projection area is outside the bridge curve, normal construction cannot be performed, and the potential safety hazard is too large, so that the girder erection machine is dismantled by 12m from the rear side of the bridge girder erection machine, and the girder feeding condition is achieved.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211031191.9A CN115897387B (en) | 2022-08-26 | 2022-08-26 | A method for erecting curved bridges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211031191.9A CN115897387B (en) | 2022-08-26 | 2022-08-26 | A method for erecting curved bridges |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115897387A CN115897387A (en) | 2023-04-04 |
| CN115897387B true CN115897387B (en) | 2026-04-17 |
Family
ID=86484903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211031191.9A Active CN115897387B (en) | 2022-08-26 | 2022-08-26 | A method for erecting curved bridges |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115897387B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116427283B (en) * | 2023-04-28 | 2026-03-27 | 广西路桥工程集团有限公司 | A construction method for erecting precast bridge beams with small radius in mountainous areas |
| CN116949946B (en) * | 2023-07-12 | 2026-02-17 | 中国铁建港航局集团有限公司 | Construction method for bridge bridging of small-radius curve bridge |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711067A (en) * | 2014-01-13 | 2014-04-09 | 河南省交通规划勘察设计院有限责任公司 | Transversely assembled corrugated steel web combined box girder with small number of supports and construction method thereof |
| CN109537460A (en) * | 2018-11-30 | 2019-03-29 | 中建五局第三建设有限公司 | High-position beam falling construction method for pushing bridge |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006299650A (en) * | 2005-04-21 | 2006-11-02 | Mitsubishi Heavy Industries Bridge & Steel Structures Engineering Co Ltd | Launching method |
| CN1880580A (en) * | 2006-01-18 | 2006-12-20 | 秦皇岛市北戴河通联路桥机械有限公司 | Bridging method by cooperation of temporary bridge and bridge girder erection machine at tunnel exit |
| JP2009097197A (en) * | 2007-10-15 | 2009-05-07 | Oriental Shiraishi Corp | Method of constructing pillar head |
| KR100987062B1 (en) * | 2009-10-26 | 2010-10-11 | 림버스산업 주식회사 | Expansion joint for bridges and this construction technique capable of a drainage sheet change |
| KR101954727B1 (en) * | 2017-04-28 | 2019-03-07 | 한국철도기술연구원 | Steel plate girder through bridge for noise reduction and the construction method thereof |
-
2022
- 2022-08-26 CN CN202211031191.9A patent/CN115897387B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711067A (en) * | 2014-01-13 | 2014-04-09 | 河南省交通规划勘察设计院有限责任公司 | Transversely assembled corrugated steel web combined box girder with small number of supports and construction method thereof |
| CN109537460A (en) * | 2018-11-30 | 2019-03-29 | 中建五局第三建设有限公司 | High-position beam falling construction method for pushing bridge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115897387A (en) | 2023-04-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021078310A1 (en) | Method for removal of temporary support system for road bridge pre-fabricated small box girder-type concealed bent cap, and equipment therefor | |
| CN110130229A (en) | It a kind of several juxtaposed double cantilever erections machines and its sets a roof beam in place and passing method | |
| CN113123246B (en) | Bridge girder erection machine dismantling method | |
| CN106836000B (en) | Curve via holes Summarized Account of Bridge Erection Construction method based on DJ series Bridge Erectors | |
| CN115897387B (en) | A method for erecting curved bridges | |
| CN104594198B (en) | For the method for setting up juxtaposition case beam in tunnel | |
| CN207498754U (en) | A kind of novel track-laying machine of city track traffic engineering | |
| CN111335185A (en) | Large-tonnage box girder erection construction system for realizing height control and erection method thereof | |
| CN211973152U (en) | Large-tonnage box girder erection construction system capable of realizing height control | |
| CN113957793A (en) | Construction method for prefabricating box girder support in complex urban environment | |
| CN110820602A (en) | A single-segment box girder bridge erecting machine and its operation method | |
| CN114319145B (en) | Bridge erection method using bridge girder erection machine | |
| CN115467248A (en) | Overhead construction method of low-clearance small-curve single-guide-beam bridge girder erection machine | |
| CN210366808U (en) | Lifting and dismantling device for rail walking | |
| CN110552294B (en) | Reverse girder erection construction platform of bridge girder erection machine and construction method thereof | |
| CN100572673C (en) | Span continuous beam bridge fabrication machine in a kind of | |
| CN108203934A (en) | Based on the whole segment lifting erection crane of the traversing cable-stayed bridge composite beam of unbalance loading | |
| CN108625270A (en) | Nose girder gantry crane installs bridge prefabrication box girder construction method | |
| CN113322819A (en) | First-span T-beam erection method at tunnel outlet | |
| CN113215994B (en) | Method for mounting bridge girder erection machine at tunnel outlet | |
| CN111139742B (en) | Method for mounting and dismounting highway bridge girder erection machine | |
| CN220550458U (en) | Construction device for sliding and installing plate girder on rail in height-limiting environment | |
| CN116949946B (en) | Construction method for bridge bridging of small-radius curve bridge | |
| CN217325065U (en) | Bridge erecting machine | |
| CN111877173A (en) | Long-distance rapid transition method for bridge girder erection machine |
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 |