CN103696374B - Horizontal curve section is greatly across freely-supported steel trussed beam cantilever erection method - Google Patents
Horizontal curve section is greatly across freely-supported steel trussed beam cantilever erection method Download PDFInfo
- Publication number
- CN103696374B CN103696374B CN201310726919.4A CN201310726919A CN103696374B CN 103696374 B CN103696374 B CN 103696374B CN 201310726919 A CN201310726919 A CN 201310726919A CN 103696374 B CN103696374 B CN 103696374B
- Authority
- CN
- China
- Prior art keywords
- cantilever
- main truss
- curve
- rod member
- span
- 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
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to a kind of horizontal curve section greatly across freely-supported steel trussed beam cantilever erection method, according to position on horizontal curve of radius of horizontal curve, bridge span structure and main truss distance computation cantilever span curve medial and lateral main truss rod member and anchoring across curve medial and lateral main truss rod member length; By cantilever span curve medial and lateral main truss member erection to the permanent support position of N Dun Ding, interim connecting structure is adopted permanent for Dun Ding bearing and anchoring to be linked together across curve medial and lateral main truss rod member, along design axis cantilever jointing steel beam column part; After spanning erection is in place, remove interim connecting structure.The present invention successfully avoid girder steel lateral pushing in work progress with regard to bit manipulation, simplifies working procedure.Adopt the present invention, can to make on curved section large simplifies greatly across the construction of freely-supported steel truss girder bridge cantilever erection, stressed reliable, easy construction, simple to operate, reduce pier top temporary construction facility and site work amount, accelerating construction progress greatly, saves construction cost, remarkable in economical benefits.
Description
Technical field
The present invention relates to a kind of horizontal curve section greatly across freely-supported steel trussed beam cantilever erection method.
Background technology
The length of current highway, railroad bridge building project generally all more than several kilometers, even tens kilometers, due to the demand of beam section wiring, so long circuit can not all on straightway, and therefore a large amount of non-navigation bridges may be disposed on curved section.For the difficulty reducing design, manufacture and construct, generally by the structure design section of being in line of multispan freely-supported, on horizontal curve, " to roll over Dai Qu " carries out span distribution.For large across freely-supported steel truss girder bridge, free cantilever erection is a kind of economically viable method, is widely adopted in construction.But when steel truss girder bridge is disposed on horizontal curve, can there is a drift angle between adjacent axis, traditional free cantilever erection will make cantilever span depart from its center line in work progress, can be with the problem of serving like this:
(1) interim fulcrum need be set up at Dun Ding: due to adjacent across axis between there is angle, during cantilever erection, front end fulcrum and anchoring fulcrum all can off-design positions, so must arrange interim fulcrum in addition at each Dun Ding.
(2) lateral pushing operation need be carried out: after cantilever erection to interim fulcrum, the operation of lateral pushing adjustment axis need be carried out, make bridge span structure in place, so just must be equipped with corresponding lateral pushing equipment and device, corresponding bridge pier size will increase thereupon.
(3) loop wheel machine safety is affected: during lateral pushing operation, loop wheel machine is still on bridge span structure, and its construction safety performance is affected.
Longspan steel truss girder crane span structure on curved section is established, also has some good tries at present, such as: before free cantilever erection, anchoring is adjusted a suitable angle across beam-ends, reduce the lateral pushing shift value of structure after assembled completing; Lay slide plate at N+1 Dun Ding, reduce lateral pushing power etc.These methods can reduce the difficulty of constructing to a certain extent, but cannot from the problem solved in fact because axis runout brings.
Summary of the invention
The object of the invention is for above-mentioned present situation, aim to provide and a kind ofly fundamentally can solve the problem of cantilever bridge across axis runout, construction speed is high, and easy construction, cost are low, can stablize, efficiently in curved section erection greatly across the method for freely-supported steel trussed beam cantilever.
The object of the invention is to be achieved through the following technical solutions, horizontal curve section is greatly across freely-supported steel trussed beam cantilever erection method, and concrete steps are as follows:
1) geometrical relationship is utilized to calculate cantilever span curve medial and lateral main truss rod member and the anchoring length across curve medial and lateral main truss rod member according to position on horizontal curve of radius of horizontal curve, bridge span structure and main truss spacing, in the plane, outside cantilever span curve, the length of main truss rod member is greater than the length of the inner side of curve main truss rod member;
2) by cantilever span curve medial and lateral main truss member erection to the permanent support position of N Dun Ding, adopt interim connecting structure permanent for Dun Ding bearing and anchoring to be linked together across curve medial and lateral main truss rod member;
Interim connecting structure is the scab with knuckle, and knuckle equals cantilever span girder center line and anchoring across the drift angle between girder center line;
3) adjust the traveling speed in outside in loop wheel machine, after making loop wheel machine turn over corner α, run on cantilever span rod member, along bridge axis free cantilever erection steel truss girder;
Described corner α is that anchoring is across the angle between axis and cantilever span axis;
4) cantilever end fulcrum is dropped on the permanent bearing of N+1 Dun Ding, remove interim connecting structure;
Rod member is assembled to N+1 Dun Ding, acts directly on permanent bearing; Remove N Dun Ding to connect temporarily, complete this and construct across the free cantilever erection of structure.
The present invention successfully avoid girder steel lateral pushing in work progress with regard to bit manipulation, can reduce pier top temporary construction facility and site work amount; After structure free cantilever erection is in place, each pier top position of the fulcrum all without the need to adjustment, simplifies working procedure.
To the invention enables on curved section large simplifies greatly across the construction of freely-supported steel truss girder bridge cantilever erection, stressed reliable, easy construction, simple to operate, and accelerating construction progress, saves construction cost, remarkable in economical benefits.
Accompanying drawing explanation
Fig. 1 is free cantilever erection floor map,
Fig. 2 is N pier top close-up schematic view,
Fig. 3 is novel interim splicing structure close-up schematic view.
Detailed description of the invention
With reference to the accompanying drawings 1,2,3, in conjunction with the concrete steps of horizontal curve section freely-supported steel trussed beam cantilever erection method, elaborate the present invention.
1) according to position on horizontal curve of radius of horizontal curve, bridge span structure and main truss distance computation cantilever span curve medial and lateral main truss rod member and the anchoring length across curve medial and lateral main truss rod member.
Long+1/2 × sin α × main truss spacing of main truss rod member length outside curve=internode
Long-1/2 × sin α × main truss spacing of the inner side of curve main truss rod member length=internode
In the plane, outside cantilever span curve, the length of main truss rod member is greater than the length of the inner side of curve main truss rod member, and its difference is sin α × main truss spacing;
2) main truss rod member 1, cantilever span the inner side of curve main truss rod member 3 outside cantilever span curve are lifted to N Dun Ding permanent bearing 6 position, adopt interim connecting structure 5 permanent for Dun Ding bearing and anchoring to be linked together across the inner side of curve main truss rod member 4 across main truss rod member 2, anchoring outside curve;
Interim connecting structure 5 is the scab with knuckle, and knuckle equals cantilever span girder center line and anchoring across the drift angle between girder center line;
3) adjust the traveling speed in outside in loop wheel machine, after making loop wheel machine turn over corner α, run on cantilever span rod member, along bridge axis 7 free cantilever erection steel truss girder; In cantilever erection process, cantilever bridge axis is all the time along design axis direction.
Described corner α be anchoring across the angle between axis 9 and cantilever span axis 7, this corner is that the span distribution (i.e. " to roll over Dai Qu ") on curved section being designed to straightway produces.The present invention successfully overcomes this corner, makes the free cantilever erection construction of cantilever span all the time along axis direction.Otherwise, after steel girder erection is in place, corner α must be eliminated by lateral pushing.
4) cantilever end fulcrum is dropped on the permanent bearing 8 of N+1 Dun Ding, remove interim connecting structure;
N+1 Dun Ding is equally without the need to arranging interim fulcrum, and cantilever span rod member is assembled to N+1 Dun Ding, can act directly on permanent bearing.Remove N Dun Ding to connect temporarily, complete this and construct across the free cantilever erection of structure.
The present invention is in whole free cantilever erection process, and do not arrange any interim fulcrum, cantilever bridge all adopts permanent bearing across N, N+1 Dun Ding.The spanning completing free cantilever erection, without the need to carrying out any pushing tow and bearing adjustment operation, can be constructed across the cantilever erection participating in next spanning as anchoring immediately.
Claims (5)
1. horizontal curve section is greatly across freely-supported steel trussed beam cantilever erection method, it is characterized in that concrete steps are as follows:
1) geometrical relationship is utilized to calculate cantilever span curve medial and lateral main truss rod member and the anchoring length across curve medial and lateral main truss rod member according to position on horizontal curve of radius of horizontal curve, bridge span structure and main truss spacing, in the plane, outside cantilever span curve, the length of main truss rod member is greater than the length of cantilever span the inner side of curve main truss rod member;
2) by cantilever span curve medial and lateral main truss member erection to the permanent support position of N Dun Ding, adopt interim connecting structure permanent for Dun Ding bearing and anchoring to be linked together across curve medial and lateral main truss rod member;
Interim connecting structure is the scab with knuckle, and knuckle equals cantilever span girder center line and anchoring across the drift angle between girder center line;
3) adjust the traveling speed in outside in loop wheel machine, after making loop wheel machine turn over corner α, run on cantilever span rod member, along bridge axis free cantilever erection steel truss girder;
Described corner α is that anchoring is across the angle between axis and cantilever span axis;
4) cantilever end fulcrum is dropped on the permanent bearing of N+1 Dun Ding, remove interim connecting structure;
Rod member is assembled to N+1 Dun Ding, acts directly on permanent bearing; Remove N Dun Ding to connect temporarily, complete this and construct across the free cantilever erection of structure.
2. horizontal curve section according to claim 1 is greatly across freely-supported steel trussed beam cantilever erection method, it is characterized in that the length of spanning end main truss rod member is according to the position of bridge span structure on horizontal curve and main truss line space design.
3. horizontal curve section according to claim 1 is greatly across freely-supported steel trussed beam cantilever erection method, it is characterized in that there is angle between the axis of anchoring across cantilever span, adopt the interim connecting structure of band knuckle to complete anchoring and be connected across with the interim of main truss rod member between cantilever span.
4. horizontal curve section according to claim 1 is greatly across freely-supported steel trussed beam cantilever erection method, it is characterized in that cantilever bridge all adopts permanent bearing across N, N+1 Dun Ding in whole free cantilever erection process.
5. horizontal curve section according to claim 1 is greatly across freely-supported steel trussed beam cantilever erection method, it is characterized in that in cantilever erection process, cantilever bridge axis across all the time along design axis direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310726919.4A CN103696374B (en) | 2013-12-25 | 2013-12-25 | Horizontal curve section is greatly across freely-supported steel trussed beam cantilever erection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310726919.4A CN103696374B (en) | 2013-12-25 | 2013-12-25 | Horizontal curve section is greatly across freely-supported steel trussed beam cantilever erection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103696374A CN103696374A (en) | 2014-04-02 |
| CN103696374B true CN103696374B (en) | 2015-10-28 |
Family
ID=50358024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310726919.4A Active CN103696374B (en) | 2013-12-25 | 2013-12-25 | Horizontal curve section is greatly across freely-supported steel trussed beam cantilever erection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103696374B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107974917B (en) * | 2017-11-15 | 2019-04-16 | 中铁大桥勘测设计院集团有限公司 | A kind of bending node, curve continuous steel girder bridge and its design method |
| CN108265632B (en) * | 2018-03-27 | 2023-12-26 | 洛阳理工学院 | Curve bridge fitting layout structure based on orthogonal precast beam plates and layout method thereof |
| CN108755384B (en) * | 2018-07-27 | 2023-06-02 | 山东大学 | Cantilever assembled steel truss bridge with track and construction method thereof |
| CN109537800B (en) * | 2018-11-30 | 2021-09-21 | 中国建筑第八工程局有限公司 | Super-large span cantilever prestress arc-shaped steel beam structure and construction method thereof |
| CN111501564B (en) * | 2020-04-22 | 2022-07-19 | 中交三航局第二工程有限公司 | Corner arc track arrangement process |
| CN112144401B (en) * | 2020-06-28 | 2022-09-16 | 中交第二航务工程局有限公司 | Bridge girder erection machine over-span method based on curve track and large longitudinal slope environment |
| CN111764300B (en) * | 2020-07-21 | 2022-03-25 | 安徽省交通建设股份有限公司 | Curved steel beam pushing system and construction method |
| CN112411343A (en) * | 2020-11-30 | 2021-02-26 | 中交路桥建设有限公司 | Mountain area ultrahigh traffic-guaranteeing curve cast-in-place box girder combined support and erection method |
| CN114626137B (en) * | 2022-04-15 | 2024-04-19 | 中铁大桥局集团有限公司 | Method for obtaining large-span steel-concrete combined continuous beam bridge curve section steel truss girder |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2297491C2 (en) * | 2005-06-03 | 2007-04-20 | Открытое акционерное общество по проектированию строительства мостов "Институт Гипростроймост" | Device for bridge span structure protrusion |
| KR100909839B1 (en) * | 2008-05-21 | 2009-07-28 | 우경건설 주식회사 | Curve type preflexion steel beam frame using preflexion for installing reinforcing material at curved steel material of a curved steel frame and method for manufacturing the same |
| CN102041782A (en) * | 2010-12-10 | 2011-05-04 | 合肥中铁钢结构有限公司 | Multi-point pushing system of large-span steel truss girders and pushing process thereof |
| CN102409616A (en) * | 2011-09-09 | 2012-04-11 | 中交第四公路工程局有限公司第五工程处 | Construction method of bridge girder with ultra-small radius and bridge erecting machine used in same |
| CN102433840A (en) * | 2011-12-28 | 2012-05-02 | 中铁大桥局股份有限公司 | Incremental launching construction method for large-tonnage steel truss girder and sliding block switching system |
| CN102747691A (en) * | 2012-08-02 | 2012-10-24 | 中铁二十三局集团有限公司 | Integral pushing erection method for truss girders |
| CN103205935A (en) * | 2013-03-11 | 2013-07-17 | 中交武汉港湾工程设计研究院有限公司 | Automatic pushing system for modular steel truss and construction technology for automatic pushing system |
-
2013
- 2013-12-25 CN CN201310726919.4A patent/CN103696374B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2297491C2 (en) * | 2005-06-03 | 2007-04-20 | Открытое акционерное общество по проектированию строительства мостов "Институт Гипростроймост" | Device for bridge span structure protrusion |
| KR100909839B1 (en) * | 2008-05-21 | 2009-07-28 | 우경건설 주식회사 | Curve type preflexion steel beam frame using preflexion for installing reinforcing material at curved steel material of a curved steel frame and method for manufacturing the same |
| CN102041782A (en) * | 2010-12-10 | 2011-05-04 | 合肥中铁钢结构有限公司 | Multi-point pushing system of large-span steel truss girders and pushing process thereof |
| CN102409616A (en) * | 2011-09-09 | 2012-04-11 | 中交第四公路工程局有限公司第五工程处 | Construction method of bridge girder with ultra-small radius and bridge erecting machine used in same |
| CN102433840A (en) * | 2011-12-28 | 2012-05-02 | 中铁大桥局股份有限公司 | Incremental launching construction method for large-tonnage steel truss girder and sliding block switching system |
| CN102747691A (en) * | 2012-08-02 | 2012-10-24 | 中铁二十三局集团有限公司 | Integral pushing erection method for truss girders |
| CN103205935A (en) * | 2013-03-11 | 2013-07-17 | 中交武汉港湾工程设计研究院有限公司 | Automatic pushing system for modular steel truss and construction technology for automatic pushing system |
Non-Patent Citations (1)
| Title |
|---|
| 曲线桥顶推施工技术;程慧林;《铁道建筑技术》;20040420(第2期);30-32 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103696374A (en) | 2014-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103696374B (en) | Horizontal curve section is greatly across freely-supported steel trussed beam cantilever erection method | |
| CN103215894B (en) | Portable interim prestressed stretch-draw anchor block | |
| CN102182147B (en) | Steel box girder erection method | |
| CN110904860B (en) | Large-span flexible steel beam pushing construction method based on stay cable assistance | |
| CN104328745B (en) | Across the rotary body device of the little bridge beam of high ferro and construction method thereof on a kind of low-angle | |
| CN206034289U (en) | A supporting structure that is used for on navigable river installation steel arched bridge | |
| CN206625254U (en) | The guidance system of cast-in-place piping lane sliding system | |
| CN103774543B (en) | A kind of deck type rope arch combination bridge | |
| CN104947604A (en) | Rapid beam-replacing construction method for high speed railway 900 t concrete box beam | |
| CN108060634A (en) | Duplexing font ultra-high performance concrete-normal concrete composite beam bridge girder construction and its construction method | |
| CN203716044U (en) | Low bearing or middle bearing cable arch combined structural bridge | |
| CN207812181U (en) | Track, track girder and its crane beam | |
| CN103628421A (en) | Horizontal swivel construction system and method for simply supported steel trussed beam | |
| KR101458088B1 (en) | Construction method for rahmen bridge using transverse prestressed girder | |
| CN204112239U (en) | Across the rotary body device of the little bridge beam of high ferro on a kind of low-angle | |
| CN204023800U (en) | Steel corbel formula steel core concrete column and girder with rolled steel section en cased in concrete node connecting structure | |
| CN102776840B (en) | Mal-position assembly in-position method of truss bridge | |
| CN108708292A (en) | A kind of I-shaped steel reinforced concrete combination beam concrete folding constructing device and construction method | |
| CN208088108U (en) | A kind of Simply supported non-uniform bridge structure construction | |
| CN107188040A (en) | It is a kind of to prevent the device of unmanned overhead traveling crane clamp bobbing | |
| CN103741857B (en) | U-shaped girder steel and steel bar truss floor support plate floor system | |
| CN203712863U (en) | Mobile prefabricated T-beam pedestal | |
| CN105696470A (en) | Synchronous quick steel box girder in-situ incremental launching and tower column construction method | |
| CN103982049A (en) | Wall body assembling straightening device for shear wall | |
| CN203065975U (en) | Box beam block number zero pouring supporting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151221 Address after: 430050 Hanyang Road, Hubei, Wuhan, No. 34 Patentee after: China Zhongtie Major Bridge Reconnaissance & Design Institute Co., Ltd. Patentee after: CHINA RAILWAY CORPORATION Address before: 430050 Hanyang Road, Hubei, Wuhan, No. 34 Patentee before: China Zhongtie Major Bridge Reconnaissance & Design Institute Co., Ltd. |