CN105463982A - Spandrel architectural construction of ballastless track wide-span high-speed railway arch bridge - Google Patents
Spandrel architectural construction of ballastless track wide-span high-speed railway arch bridge Download PDFInfo
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- CN105463982A CN105463982A CN201510779852.XA CN201510779852A CN105463982A CN 105463982 A CN105463982 A CN 105463982A CN 201510779852 A CN201510779852 A CN 201510779852A CN 105463982 A CN105463982 A CN 105463982A
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- arch
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- spandrel
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- 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
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D4/00—Arch-type bridges
Abstract
The invention relates to a spandrel architectural construction of a ballastless track wide-span high-speed railway arch bridge. According to the construction, the problem that the deformation of corners of beam ends of spandrel beams is out of gauge is thoroughly solved, the smooth degree of a bridge floor is effectively improved, and the requirements of the technical conditions of a wide-span arch bridge ballastless track are met. The driving comfortability and the driving safety are improved, the construction cost of the bridge is reduced, and the later stage operation management and conservation are facilitated. The spandrel architectural construction comprises a main arch, a left junction pier, a right junction pier, spandrel pier columns and spandrel beams, wherein the left junction pier and the right junction pier are respectively arranged on two sides of the main arch, the spandrel pier columns of which the lower ends are in fixed junction with the main arch are arranged at intervals along the bridge. The spandrel architectural construction is characterized in that the spandrel beams are in continuous construction within the span range of the main arch, are in fixedly junction with the upper ends of the left junction pier and the right junction pier, and are connected with the upper ends of the pier columns of arches through a supporting seat.
Description
Technical field
The present invention and bridge, particularly a kind of spandrel construction structure of non-fragment orbit large span high-speed railway arch bridge.
Background technology
Along with the develop rapidly of China's high-speed railway in recent years, the high-speed railway Longspan Bridge crossing over mountain area Valley must emerge in multitude, and arch bridge is as a kind of conventional bridge type, not only there is larger span ability and integral rigidity, and can well combine with Valley, become the main bridge type that Valley crossed over by high-speed railway.
At present, Railway Long Span Arch Bridge spandrel construction mainly adopts porous simply supported beam or multi-joint beam structure, and arch upper beam portion all has " breaking joint ".As the 2000 main span 236m Shuibai Railway north dish Jiang great Qiao built up, spandrel construction is 10 hole 24m simply supported beam systems, and Chongqing-Guichow Railway youth at the night river two-wire grand bridge built, main span is 370m deck type reinforced concrete arch bridge, and spandrel construction is the continuous beam on many supports system of 3 38m.For long-span arch bridge, main arch ring, under the load action such as system temperature, mobile load, can cause the distortion of larger beam-ends corner at arch upper beam beam seam place, cause the irregularity of bridge floor and track simultaneously, will affect comfort level and safety that train runs at high speed greatly.On the one hand, the corner displacement at the breaking joint place that variable load causes can increase along with the increasing of arch bridge span, excessive corner distortion will cause stressed the transfiniting such as breaking joint place track structure fastener and destroy, and bridge cannot lay non-fragment orbit, even causes train speed limit to run; On the other hand, Mountainous high speed railway is non-fragment orbit, as bridge cannot meet the requirement of laying non-fragment orbit, then needs to lay Ballast track.So, need a set of large machine Maintenance Machinery of special configuration to carry out operation maintenance to track, and non-fragment orbit changeover portion need be set, and after running a period of time, railway ballast needs to change, and this will increase the operation maintenance cost in later stage greatly.
Therefore, a kind of spandrel construction being applicable to the long-span arch bridge of non-fragment orbit is provided, provides larger degree of freedom by China's mountain railway route selection, have very important meaning to promotion China Mountainous high speed railway development.
Summary of the invention
The present invention want technical solution problem be to provide a kind of non-fragment orbit large span high-speed railway arch bridge spandrel construction structure, this structure thoroughly solves arch upper beam beam-ends corner and is out of shape the problem transfinited, the smooth degree of effective raising bridge floor, meets the technical condition that long-span arch bridge lays non-fragment orbit.Improve comfort level and the safety of driving, reduce bridge cost, facilitate later stage operation management and maintenance.
It is as follows that the present invention solves the technical scheme that its technical problem takes:
The spandrel construction structure of a kind of non-fragment orbit large span high-speed railway arch bridge of the present invention, comprise pier stud and arch upper beam on main arch, left side border pier, right side border pier, arch, left side border pier, right side border pier are arranged at the both sides of main arch respectively, on the arch of lower end and main arch consolidation, pier stud is arranged along along bridge to interval, it is characterized in that: described arch upper beam is continuous structure in main arch span scope, with the upper end consolidation of left side border pier, right side border pier, to be formed by bearing with the upper end of pier stud on each arch and be connected.
The invention has the beneficial effects as follows, arch upper beam is seamless continuous structure in main arch span scope, thorough solution arch upper beam beam-ends corner is out of shape the problem transfinited, bridge floor longitudinal force can better be transmitted to both sides, the smooth degree of effective raising bridge floor, meet the technical condition that Loads of Long-span Bridges lays non-fragment orbit, improve comfort level and the safety of driving; Bridge is laid non-fragment orbit and is facilitated later stage operation and maintenance, has saved operation maintenance cost; At border pier place, arch upper beam adopts large-span structure, effectively reduces the whole height of the upper pier stud of arch, reduces construction risk while saving material; Liang Tike adopts to segment apart and builds, and can meet various execution conditions and construction period flexibly, realizes the use of falling of template; Structure innovation, profile are coordinated, and are specially adapted to the high-speed railway long-span arch bridge laying non-fragment orbit.
Accompanying drawing explanation
This manual comprises a following accompanying drawing:
Fig. 1 is the schematic diagram of the spandrel construction structure of a kind of non-fragment orbit large span of the present invention high-speed railway arch bridge;
Component shown in figure and corresponding mark: pier stud 12, arch upper beam 13 on main arch 10, left side border pier 11a, right side border pier 11b, arch.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
With reference to Fig. 1, the spandrel construction structure of a kind of non-fragment orbit large span high-speed railway arch bridge of the present invention, comprise pier stud 12 and arch upper beam 13 on main arch 10, left side border pier 11a, right side border pier 11b, arch, left side border pier 11a, right side border pier 11b are arranged at the both sides of main arch 10 respectively, and on the arch of lower end and main arch 10 consolidation, pier stud 12 is arranged along along bridge to interval.Described arch upper beam 13 is continuous structure in main arch 10 span scope, with the upper end consolidation of left side border pier 11a, right side border pier 11b, to be formed be connected with the upper end of pier stud 12 on each arch by bearing.
With reference to Fig. 1, arch upper beam 13 is seamless continuous structure in main arch span scope, thorough solution arch upper beam beam-ends corner is out of shape the problem transfinited, bridge floor longitudinal force can better be transmitted to both sides, the smooth degree of effective raising bridge floor, meet the technical condition that Loads of Long-span Bridges lays non-fragment orbit, improve comfort level and the safety of driving.Bridge is laid non-fragment orbit and is facilitated later stage operation and maintenance, has saved later stage operation maintenance cost.Arch upper beam 13 adopts the structure compared with large span in border pier (border pier 11a, 11b) both sides, can reduce the whole height of the upper pier stud of arch, reduce construction risk while saving material.Arch upper beam 13 can adopt to segment apart builds, and can meet various execution conditions and construction period flexibly; Structure innovation, profile are coordinated, and are specially adapted to the high-speed railway long-span arch bridge laying non-fragment orbit.
For Shanghai elder brother visitor specially north dish river grand bridge, this bridge is the type concrete arch bridge of main span 445m, and for the first in the world is greatly across concrete arch-type bridge after building up, design speed per hour is 350km/h, adopts non-fragment orbit completely.As adopted existing technology, on arch, beam portion of 1# pier place arranges breaking joint, then the maximum beam-ends corner value that beam seam place is caused by variable load is 3.491 ‰, considerably beyond non-fragment orbit 2 ‰ limit value.Lay non-fragment orbit condition if do not possess, namely lay Ballast track, the operation maintenance cost 8,700,000 yuan such as facility maintenance of equipment will be increased.Adopt the present invention to have the beneficial effect of two aspects: the first, arch upper beam is all continuous, thoroughly solves the problem of beam-ends corner distortion, meets the deformation condition laying non-fragment orbit, saves later stage operation maintenance cost.For ride comfort aspect, adopt existing technology, because the jump of dipping and heaving appears in breaking joint place bridge floor, pass through Vehicle-bridge Coupling Analysis, train palpus below speed limit 300km/h, and adopt the present invention, train can meet degree of safety and the comfort level requirement of speed per hour 350km/h operation.The second, north dish river grand bridge adopts the present invention at border pier both sides place span 65m, and all the other arch upper beam portions are 42m etc. across, the now upper 1# pier height 57.8m of arch; All adopt 42m girder span as encircleed upper beam, then the upper 1# pier of arch is up to 75.5m, and comparatively the present invention program increases 17.7m, operation on arch, and difficulty of construction and cost are all by increase, and the upper pier of all the other arches all can correspondingly increase simultaneously.Adopt beam span on arch of the present invention to arrange through measuring and calculating, on the especially big bridge arch of Bei Panjiang, pier height overall is 235.4m, as arch upper beam adopt 42m etc. across layout time, on arch, pier height overall is 324.3m.Adopt the present invention program, save a bridge pier, save upper pier quantity of masonry 1950 side of arch, save bricklaying and reach 38%, save cost 242.6 ten thousand yuan.The upper 42m girder span of arch adopts simple-supported thencontinuous simultaneously, and segmentation is formed, and what realize template repeatedly falls use, effectively reduces difficulty of construction and the bridge cost of bridge.
Some principles of the spandrel construction structure of the above a kind of non-fragment orbit large span of the present invention high-speed railway arch bridge that just explains through diagrams, be not the present invention to be confined to shown in and in described concrete structure and the scope of application, therefore every corresponding modify of being likely utilized and equivalent, all belong to the scope of the claims that the present invention applies for.
Claims (1)
1. the spandrel construction structure of a non-fragment orbit large span high-speed railway arch bridge, comprise main arch (10), left side border pier (11a), right side border pier (11b), pier stud (12) and arch upper beam (13) on arch, left side border pier (11a), right side border pier (11b) is arranged at the both sides of main arch (10) respectively, on the arch of lower end and main arch (10) consolidation, pier stud (12) is arranged along along bridge to interval, it is characterized in that: described arch upper beam (13) is continuous structure in main arch (10) span scope, with left side border pier (11a), the upper end consolidation on right side border pier (11b), to be formed by bearing with the upper end of pier stud (12) on each arch and be connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510779852.XA CN105463982B (en) | 2015-11-13 | 2015-11-13 | A kind of spandrel construction construction of non-fragment orbit large span high-speed railway arch bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510779852.XA CN105463982B (en) | 2015-11-13 | 2015-11-13 | A kind of spandrel construction construction of non-fragment orbit large span high-speed railway arch bridge |
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| CN105463982A true CN105463982A (en) | 2016-04-06 |
| CN105463982B CN105463982B (en) | 2019-01-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958187A (en) * | 2017-03-23 | 2017-07-18 | 中铁二院工程集团有限责任公司 | A kind of lateral displacement control method of high-speed railway long-span arch bridge |
| CN110565534A (en) * | 2019-09-28 | 2019-12-13 | 中铁十八局集团第二工程有限公司 | construction method for assembling continuous steel box girder by cantilever |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106958187A (en) * | 2017-03-23 | 2017-07-18 | 中铁二院工程集团有限责任公司 | A kind of lateral displacement control method of high-speed railway long-span arch bridge |
| CN106958187B (en) * | 2017-03-23 | 2019-05-21 | 中铁二院工程集团有限责任公司 | A kind of lateral displacement control method of high-speed railway long-span arch bridge |
| CN110565534A (en) * | 2019-09-28 | 2019-12-13 | 中铁十八局集团第二工程有限公司 | construction method for assembling continuous steel box girder by cantilever |
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| CN105463982B (en) | 2019-01-04 |
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