CN203498760U - Guiding device for large-span box girder pushing - Google Patents
Guiding device for large-span box girder pushing Download PDFInfo
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- CN203498760U CN203498760U CN201320574292.0U CN201320574292U CN203498760U CN 203498760 U CN203498760 U CN 203498760U CN 201320574292 U CN201320574292 U CN 201320574292U CN 203498760 U CN203498760 U CN 203498760U
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- nose girder
- girder
- box girder
- pushing tow
- bridge pier
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Abstract
The utility model discloses a guiding device for large-span box girder pushing, which is characterized by including a guide beam, the rear end of the guide beam is anchored at one end, laid on the bridge pier on its own side, of the box girder, the front end of the guide beam faces toward the bridge pier at the opposite side, a plurality of temporary piers are arranged under the guide beam, a horizontal bearing beam is arranged on the temporary piers, and slide blocks are arranged between the guide beam and the horizontal bearing beam. In the pushing construction, the guide beam forms a temporary cantilever structure while spanning the boundary.
Description
Technical field
The utility model relates to a kind of greatly across the working servicing unit of footpath (Lmax >=60m) box beam erection, particularly a kind of servicing unit of applicable incremental launching method.
Background technology
Incremental launching method in nineteen fifty-nine by the Ulf Leonhardt doctor of front Germany and Bao Er professor first Application in prestressed concrete continuous beam Austria Ager bridge (L=280m, 4 span continuous beam, in setting up Lmax=85m), it is that a side at abutment arranges precasting yard, segmented prefabricated, segment length 8.5m, and will after full-bridge spelling, carry out incremental launching construction by the wet seam of 0.5m concrete.With same method, 1962 Nian Venezuela build up Caroni (Caroni) river bridge, and (L=500m, 6 span continuous beam Lmax=96m), have first been used steel nose girder, and Temporary Piers is set between bridge pier.Within 1964, Incremental Launching Construction Technology has obtained further improvement, adopted segmented prefabricated, pushing process piecemeal, i.e. segmented precast beam body on the fixed base of precasting yard, pushing tow connects with presstressed reinforcing steel simultaneously piecemeal piecemeal.After this, the former Soviet Union, Italy, France, Austria and the state such as Japanese adopt incremental launching method to build many prestressed concrete continuous beam bridges in succession.So far, countries in the world adopt the bridge of incremental launching method over 200.The reasonable pushing tow of recommending is 42m across footpath, and not establishing Temporary Piers is also 63m without the maximum pushing tow span of other supporting facility.The Worth bridge L=404m three-span continuous beam of front Germany, largest span 168m, arranges 2 Temporary Piers therebetween, and pushing tow is 56m across footpath.
In the design of riverfront road, domestic Luoyang City lower support type prestressed concrete bowstring arch bridge (bridge span structure is 3 * 72m), also adopted incremental launching method to carry out the building operations of main bridge, this project is often 15000kN across case beam, the crossbeam gross weight of bridge deck, be concreting on artificial recent fill ground, and integral pushing put in place.
Summary of the invention
In current large-span concrete box girder pushing tow process, box girder cantilever is long, and maximum cantilever section part hogging moment may be well beyond design throughput; Employing reduces span scheme, limited by site condition, and the present situation that likely significantly increases of construction cost, and the utility model provides the leading-in device that connects that a kind of large-span concrete box girder pushing tow uses, and can eliminate the cantilever situation of case beam in incremental launching construction.
For reaching above object, the utility model is to take following technical scheme to be achieved:
A kind of large-span concrete box girder pushing tow is with connecing leading-in device, it is characterized in that, comprise nose girder, the rear end of this nose girder is anchored at one end that case beam is shelved on one's own side's bridge pier, nose girder front end is towards the other side's bridge pier, some Temporary Piers are set below nose girder, a horizontal bearing beam is set on Temporary Piers, between nose girder and horizontal bearing beam, slide block is set; In incremental launching construction, nose girder forms interim cantilever construction when crossing over gauge.
In such scheme, described nose girder is at least formed by connecting by two joints.Every joint nose girder longitudinally comprises two rice word steelframes that are parallel to each other and connect.
The From Shijiazhuang City of Hebei Province 307 national highway east interchange overpass that applicant undertakes the construction of, consider moral railway Liang Cun station, main spanning Yueshi, for fear of railway operation and the reorganization and expansion of stone moral line are impacted, first Application the more intensive rail yard push construction method of Long-span case girder span, adopt the construction of the utility model device, build 3 of steel reinforced concrete combination Temporary Piers, horizontal four slideways of nose girder slide, the two nose girders in front and back connect and draw, and make the pushing tow distance of case beam reach that 102m, pushing tow width reach 24.3m, pushing tow weight reaches 7800t.
Accompanying drawing explanation
Below in conjunction with the drawings and the specific embodiments, the utility model is described in further detail.
Fig. 1 is that the utility model connects and draws view (only drawing front launching nose).
Fig. 2 is the top view of two nose girders in Fig. 1.
In Fig. 1, Fig. 2: 1, nose girder; 1-1,1-2,1-3 are respectively first, second and third joint short beam; 2, gauge; 3, case beam; 4, support; 5, one's own side's bridge pier; 6, Temporary Piers; 7, slide block; 8, bearing beam; 9, rice word steelframe.
The specific embodiment
Referring to Fig. 1, a kind of large-span concrete box girder pushing tow is with connecing leading-in device, it is characterized in that, comprise nose girder 1, this nose girder is interconnected and is formed by three joint short beam 1-1,1-2,1-3, wherein first segment short beam 1-1 rear end is anchored at one end that case beam 3 is shelved on one's own side's bridge pier 5, and the free end of the 3rd joint short beam 1-3, towards the other side's bridge pier (not shown in FIG.), makes whole nose girder when pushing tow is crossed over gauge, form interim cantilever construction.Three joint nose girder bottoms longitudinally arrange the essence of 4-6 root 32mm and prick screw-thread steel, to increase bulk strength, rigidity and the stability of nose girder structure.
Below nose girder, according to several Temporary Piers 6 of site contour condition setting, on all Temporary Piers, connect a horizontal bearing beam 8, between nose girder and horizontal bearing beam, arrange below the every joint beam of some slide block 7(two ends and arrange 1).
Referring to Fig. 2, every joint nose girder is comprised of two rice word steelframes 9 that connect that are parallel to each other longitudinally, and this structure can keep nose girder self intensity, rigidity and stability.
The operating principle of this device in case beam incremental launching construction:
Referring to Fig. 1, prefabricated case beam 3 on one's own side's bridge pier 5, support 4, at one's own side's bridge pier and gauge (the impregnable region such as railway, station), set up 3 Temporary Piers 6(steel column piers), on it, connect horizontal bearing beam 8, slide block 7 is set, nose girder 1 is placed on slide block 7, and the rear end deep layer anchor connection of first segment beam 1-1 is in one end of case beam one's own side bridge pier.In pushing tow process, the free end of the 3rd joint 1-3 of nose girder 1 moves to the other side's bridge pier gradually, and crosses over gauge and form interim semi girder state, until arrive the other side's bridge pier, eliminates cantilever position.
In this device, leading beam action is bridge pier in morning, and help case beam bridge pier under evening is stressed to reduce box girder cantilever, reduces the narrow adverse effect that case back is pushed away in construction plant, and keeps case back to be bulldozed weighing apparatus.
Claims (3)
1. a large-span concrete box girder pushing tow is with connecing leading-in device, it is characterized in that, comprise nose girder, the rear end of this nose girder is anchored at one end that case beam is shelved on one's own side's bridge pier, nose girder front end is towards the other side's bridge pier, some Temporary Piers are set below nose girder, a horizontal bearing beam is set on Temporary Piers, between nose girder and horizontal bearing beam, slide block is set; In incremental launching construction, nose girder forms interim cantilever construction when crossing over gauge.
2. large-span concrete box girder pushing tow as claimed in claim 1, with connecing leading-in device, is characterized in that, described nose girder is at least formed by connecting by two joints.
3. large-span concrete box girder pushing tow as claimed in claim 1, with connecing leading-in device, is characterized in that, every joint nose girder longitudinally comprises two rice word steelframes that are parallel to each other and connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320574292.0U CN203498760U (en) | 2013-09-16 | 2013-09-16 | Guiding device for large-span box girder pushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320574292.0U CN203498760U (en) | 2013-09-16 | 2013-09-16 | Guiding device for large-span box girder pushing |
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| CN203498760U true CN203498760U (en) | 2014-03-26 |
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| CN201320574292.0U Expired - Fee Related CN203498760U (en) | 2013-09-16 | 2013-09-16 | Guiding device for large-span box girder pushing |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924528A (en) * | 2014-04-14 | 2014-07-16 | 上海市机械施工集团有限公司 | Overall long-distance pushing slippage construction method for large-span bridge box girder structure of large-span bridge |
| CN104674671A (en) * | 2015-03-04 | 2015-06-03 | 中铁二十四局集团上海铁建工程有限公司 | Weight supporting and moving device |
| CN105696471A (en) * | 2016-01-26 | 2016-06-22 | 盈都桥梁钢构工程有限公司 | Jacking component and construction method for steel box girder |
| CN111485479A (en) * | 2020-04-24 | 2020-08-04 | 中铁十局集团第八工程有限公司 | Traffic channel beam device for crossing railway business line and construction method |
| CN112267386A (en) * | 2020-11-19 | 2021-01-26 | 中国铁建大桥工程局集团有限公司 | Pushing device and steel box girder pushing method |
| CN112647418A (en) * | 2020-12-18 | 2021-04-13 | 中建八局第三建设有限公司 | Variable cross-section continuous beam bridge pushing construction device |
| CN115182256A (en) * | 2022-06-30 | 2022-10-14 | 中冶(上海)钢结构科技有限公司 | Walking pushing method for large-span through tied steel arch bridge |
-
2013
- 2013-09-16 CN CN201320574292.0U patent/CN203498760U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924528A (en) * | 2014-04-14 | 2014-07-16 | 上海市机械施工集团有限公司 | Overall long-distance pushing slippage construction method for large-span bridge box girder structure of large-span bridge |
| CN103924528B (en) * | 2014-04-14 | 2016-03-09 | 上海市机械施工集团有限公司 | Long-span bridge box-beam structure entirety long distance thrusting slip construction method |
| CN104674671A (en) * | 2015-03-04 | 2015-06-03 | 中铁二十四局集团上海铁建工程有限公司 | Weight supporting and moving device |
| CN105696471A (en) * | 2016-01-26 | 2016-06-22 | 盈都桥梁钢构工程有限公司 | Jacking component and construction method for steel box girder |
| CN105696471B (en) * | 2016-01-26 | 2018-03-13 | 盈都桥梁钢构工程有限公司 | A kind of steel box-girder pushing tow component and construction method |
| CN111485479A (en) * | 2020-04-24 | 2020-08-04 | 中铁十局集团第八工程有限公司 | Traffic channel beam device for crossing railway business line and construction method |
| CN112267386A (en) * | 2020-11-19 | 2021-01-26 | 中国铁建大桥工程局集团有限公司 | Pushing device and steel box girder pushing method |
| CN112267386B (en) * | 2020-11-19 | 2022-03-25 | 中国铁建大桥工程局集团有限公司 | Pushing device and steel box girder pushing method |
| CN112647418A (en) * | 2020-12-18 | 2021-04-13 | 中建八局第三建设有限公司 | Variable cross-section continuous beam bridge pushing construction device |
| CN115182256A (en) * | 2022-06-30 | 2022-10-14 | 中冶(上海)钢结构科技有限公司 | Walking pushing method for large-span through tied steel arch bridge |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20160916 |
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| CF01 | Termination of patent right due to non-payment of annual fee |