CN105568789A - Two-line rail girder of maglev rail-holding rail transit - Google Patents
Two-line rail girder of maglev rail-holding rail transit Download PDFInfo
- Publication number
- CN105568789A CN105568789A CN201510952988.6A CN201510952988A CN105568789A CN 105568789 A CN105568789 A CN 105568789A CN 201510952988 A CN201510952988 A CN 201510952988A CN 105568789 A CN105568789 A CN 105568789A
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- Prior art keywords
- rail
- case beam
- bridge pier
- crossbeam
- embraced
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B25/00—Tracks for special kinds of railways
- E01B25/30—Tracks for magnetic suspension or levitation vehicles
- E01B25/305—Rails or supporting constructions
-
- 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
Abstract
The invention discloses a two-line rail girder of maglev rail-holding rail transit. The rail girder comprises a left box girder and a right box girder which are erected on a bridge pier, wherein the structure of the left box girder is the same with that of the right box girder, the left box girder is mounted on the bridge pier through a left support, the right box girder is mounted on the bridge pier through a right support, and the structure of the left support is the same with that of the right support; the right side of the left box girder is fixedly connected with the left side of the right box girder through a cross beam, and the cross section of the cross beam is H-shaped; the cross beam is arranged right above the bridge pier and spaced from the bridge pier. The left and right box girders are connected through the cross beam, the overall rigidity is greatly increased, the rail girder is more than 3 times the rigidity when left and right single girders are arranged separately, the structural rigidity is increased, the deformation during structural stress is greatly reduced correspondingly, and the strict requirement of the maglev engineering for structural deformation is met.
Description
Technical field
The invention belongs to rail beam field, more specifically, relate to a kind of magnetic suspension and embrace rail track traffic two-wire rail beam.
Background technology
Embrace rail track traffic and mainly comprise magnetic levitation track traffic and cross-saddle single-track traffic, the two all adopts unique armful rail method of operation, and the small bore single line case beam meeting vehicle gauge embraces the most economical beam type of rail track traffic.
With reference to Fig. 1, two case beams of two trajectories of traditional small bore are separate to be arranged, and makes the lateral stiffness of two trajectories poor; Each case beam relies on two bearings to support respectively in addition, bearing settlement is on bridge pier, the horizontal spacing of these two bearings is large, cause the transverse width of top of bridge pier cap also larger, which improves the size of top of bridge pier cap and pier bottom structure, add bridge pier volume and be about 35%, greatly add the manufacturing cost of bridge pier, and make bridge pier also unsightly.
With reference to Fig. 2 (a), Fig. 2 (b), Chinese Patent Application No. be 201410487247.0 Chinese patent disclose the two case rectangle steel of a kind of straddle-type monorail-mixed combined track beam structure, comprise: the two line steel be parallel to each other-mixed track girder, be connected by the crossbeam of bottom, lower flat vertical connection between two steel-mixed track girders, wherein, described steel-mixed track girder comprises: the concrete long cube structure of to be the steel beam structure of box and cross section be in cross section rectangle, and described concrete long cube structure is in the top of described steel beam structure, and is connected by WELDING STUDS with described steel beam structure, it arranges crossbeam to increase lateral stiffness between common two line steel reinforced concrete combined track beams, but its crossbeam adopted is trussed construction, although the crossbeam of this trussed construction can increase lateral stiffness, but it is not suitable for being applied in this special bridge construction of magnetic levitation track girder, except the factor that its cost is higher, the impact that steel truss structure is easily expanded with heat and contract with cold, the planeness of magnetic suspension rail is controlled to there is larger impact, so just be unfavorable for the smooth-ride of magnetic suspension train, simultaneously, complicated trussed construction aesthetic property is poor, do not meet the requirement of Modern City Traffic development.
Summary of the invention
For above defect or the Improvement requirement of prior art, the invention provides a kind of magnetic suspension and embrace rail track traffic two-wire rail beam, its lateral stiffness is high, and effectively can save manufacturing cost.
For achieving the above object, according to the present invention, provide a kind of magnetic suspension and embrace rail track traffic two-wire rail beam, it is characterized in that, comprise and be erected at left case beam on bridge pier and right case beam, described left case beam is identical with the structure of right case beam, and described left case beam is arranged on described bridge pier by a left support abutment, described right case beam is arranged on described bridge pier by a right support abutment, and described left support abutment is identical with the structure of right support abutment;
The left side of described left case beam is provided with the left wing plate stretched out obliquely upward, and the right side of described right case beam is provided with the right wing plate stretched out obliquely upward, and described left wing plate and right wing plate symmetrical;
The right side of described left case beam and the crossbeam that passes on left of described right case beam are fixed together, and in addition, the cross section of described crossbeam is I-shaped, its by cross section be in I-shaped box hat penetration concrete formed;
Described crossbeam is arranged at directly over described bridge pier, and and there is spacing between described bridge pier.
Preferably, described left case beam and described right case beam are hollow structure.
Preferably, described crossbeam, left case beam are concordant with the bottom face of right case beam.
Preferably, described horizontal depth of beam is 2/5 ~ 4/5 of described left case depth of beam.
Preferably, the height of described bearing is 1/11 ~ 1/9 of described beam height.
Preferably, the spacing between described crossbeam and described bridge pier is 0.3m ~ 0.5m.
Preferably, in described crossbeam, box hat and concrete weight ratio are 0.2:1 ~ 0.5:1.
Preferably, the tensile strength of described crossbeam is greater than 10MPa.
Preferably, the compressive strength of described crossbeam is greater than 15MPa.
In general, the above technical scheme conceived by the present invention compared with prior art, can obtain following beneficial effect:
1) the present invention not arrange simply crossbeam with minimizing bearing simply superpose, but according to the feature of magnetic-levitation traffic, select to arrange I-shaped crossbeam at pier location place, ensure that the attractive in appearance of profile, less on the impact of track form when variations in temperature.Left and right two case beams are by the connection of crossbeam, and its integral rigidity is greatly improved, more than 3 times of rigidity during for arranging separately left and right two panels single-beam.
The lifting of the rigidity of structure, deformation when substantially reducing structure stress accordingly, meets magnetic and floats the strict demand of engineering for structural deformation.
2) the present invention is provided with crossbeam due to position corresponding with bearing on case beam, four bearings of corresponding support box beam can be reduced to two bearings, top of bridge pier cap lateral dimension can reduce 35%, and bridge abutment integral size reduces saving bottom pile foundation stake simultaneously and is about 25%.Therefore, by optimizing bearing settlement scheme, the manufacturing cost of bearing can be made to reduce 50%, decrease bridge pier cost 35%, decrease bottom pile foundation cost 25%.
Accompanying drawing explanation
Fig. 1 is the structural representation that in prior art, two single line case beams are independently arranged;
Fig. 2 (a) and Fig. 2 (b) are the schematic diagrames using truss to be connected in prior art;
Fig. 3 is the schematic diagram that the case beam with wing plate in prior art is arranged on bridge pier;
Fig. 4 is structural representation of the present invention;
Fig. 5 is the cross sectional representation of middle cross beam of the present invention.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.In addition, if below in described each embodiment of the present invention involved technical characteristic do not form conflict each other and just can mutually combine.
With reference to Fig. 4, Fig. 5, rail track traffic two-wire rail beam is embraced in a kind of magnetic suspension, comprise and be erected at left case beam 2 on bridge pier 1 and right case beam 3, described left case beam 2 is identical with the structure of right case beam 3, and described left case beam 2 is arranged on described bridge pier 1 by a left support abutment 4, described right case beam 3 is arranged on described bridge pier 1 by a right support abutment 5, and described left support abutment 4 is identical with the structure of right support abutment 5;
The left side of described left case beam 2 is provided with the left wing plate 7 stretched out obliquely upward, and the right side of described right case beam 3 is provided with the right wing plate 8 stretched out obliquely upward, and described left wing plate 7 and right wing plate 8 symmetrical;
The right side of described left case beam 2 and the crossbeam 6 that passes on left of described right case beam 3 are fixed together, and in addition, the cross section of described crossbeam 6 is I-shaped, its by cross section be in I-shaped box hat penetration concrete formed; I-shaped crossbeam 6 periphery adopts steel plate to form accommodating chamber, fills steel concrete in chamber, and the connected mode of itself and both sides case beam can adopt the connected mode of flange and bolt, also can adopt the mode of welding.In magnetic suspension rail building course, two case beams are prefabricated in advance, and then installed fixing by Bridge Erector, between two box beam be arranged in parallel, space is very limited.The horizontal component of I-shape construction is fixedly connected with in the middle part of case beam sides bottom and web, ensures the rigidity in horizontal direction.The vertical portion of I-shape construction is fixedly connected with box girder web, ensures the rigidity in vertical direction.Have employed less material, occupy less volume, rigidity higher can be obtained in horizontal direction and vertical direction.Be applicable to being applied to magnetic suspension rail environment.
Described crossbeam 6 is arranged at directly over described bridge pier 1, and and there is spacing between described bridge pier 1.
The present invention not arranges crossbeam simply and simply superposes with minimizing bearing, but according to the feature of magnetic-levitation traffic, select to arrange crossbeam in bridge pier 1 position, ensure that the attractive in appearance of profile, less on the impact of track form when variations in temperature.Left and right two case beams are by the connection of crossbeam, and its integral rigidity is greatly improved, more than 3 times of rigidity during for arranging separately left and right two panels single-beam.The lifting of the rigidity of structure, deformation when substantially reducing structure stress accordingly, meets magnetic and floats the strict demand of engineering for structural deformation.
The present invention is provided with crossbeam due to position corresponding with bearing on case beam, four bearings of corresponding support box beam can be reduced to two bearings, bridge pier 1 pushes up cap lateral dimension can reduce 35%, and bridge pier 1 overall dimensions reduces saving bottom pile foundation stake simultaneously and is about 25%.Therefore, by optimizing bearing settlement scheme, the manufacturing cost of bearing can be made to reduce 50%, decrease bridge pier 1 cost 35%, decrease bottom pile foundation cost 25%.
Further, described left case beam 2 and described right case beam 3 are hollow structure, and the dead load of case beam greatly reduces, make case beam make, erection all more convenient, box girder integral cost savings are more.
Further, described crossbeam 6, left case beam 2 are concordant with the bottom face of right case beam 3, and left case beam 2 and right case beam 3 are linked together by crossbeam 6, and integral rigidity improves more than 3 times.Crossbeam is concordant with case beam bottom, left and right, and its plastic simplicity is attractive in appearance, can reduce the manufacture difficulty of box girder formwork, saves cost of manufacture.Meanwhile, crossbeam is concordant with case beam bottom, left and right, and the structural stress sudden change avoiding the abrupt change of cross-section to bring, avoids case beam and larger concentrated stress appears in crossbeam connecting portion, and make structure stress even, stress performance is further enhanced.
Further, the height of described crossbeam 6 is 2/5 ~ 4/5 of described left case beam 2 height, the height of described bearing is 1/10 of described crossbeam 6 height, spacing between described crossbeam and described bridge pier 1 is 0.3m ~ 0.5m, in described crossbeam 6, box hat and concrete weight ratio are 0.2:1 ~ 0.5:1, the thickness of described crossbeam 6 is 1/10 ~ 1/5 of its length, its structural volume is comparatively very little relative to left and right two panels case beam, especially beam thickness is thinner, conduct oneself with dignity less, consequently reduce the dead load that left and right case joist support is subject to, also reduce bottom bridge pier simultaneously, the load that pile foundation is born.In addition the profile that crossbeam is slim and graceful, adds daylighting effect under the bridge between two panels case beam, also enhances landscape effect.
Further, the tensile strength of described horizontal gird 6 is greater than 10Mpa, and the compressive strength of described horizontal gird 6 is greater than 15Mpa, to adapt to the requirement of strength of track traffic.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. rail track traffic two-wire rail beam is embraced in a magnetic suspension, it is characterized in that, comprise and be erected at left case beam on bridge pier and right case beam, described left case beam is identical with the structure of right case beam, and described left case beam is arranged on described bridge pier by a left support abutment, described right case beam is arranged on described bridge pier by a right support abutment, and described left support abutment is identical with the structure of right support abutment;
The left side of described left case beam is provided with the left wing plate stretched out obliquely upward, and the right side of described right case beam is provided with the right wing plate stretched out obliquely upward, and described left wing plate and right wing plate symmetrical;
The right side of described left case beam and the crossbeam that passes on left of described right case beam are fixed together, and in addition, the cross section of described crossbeam is I-shaped, its by cross section be in I-shaped box hat penetration concrete formed;
Described crossbeam is arranged at directly over described bridge pier, and and there is spacing between described bridge pier.
2. rail track traffic two-wire rail beam is embraced in a kind of magnetic suspension according to claim 1, it is characterized in that, described left case beam and described right case beam are hollow structure.
3. rail track traffic two-wire rail beam is embraced in a kind of magnetic suspension according to claim 1, it is characterized in that, described crossbeam, left case beam are concordant with the bottom face of right case beam.
4. rail track traffic two-wire rail beam is embraced in a kind of magnetic suspension according to claim 1, it is characterized in that, described horizontal depth of beam is 2/5 ~ 4/5 of described left case depth of beam.
5. rail track traffic two-wire rail beam is embraced in a kind of magnetic suspension according to claim 1, and it is characterized in that, the height of described bearing is 1/11 ~ 1/9 of described beam height.
6. rail track traffic two-wire rail beam is embraced in a kind of magnetic suspension according to claim 1, and it is characterized in that, the spacing between described crossbeam and described bridge pier is 0.3m ~ 0.5m.
7. rail track traffic two-wire rail beam is embraced in a kind of magnetic suspension according to claim 1, and it is characterized in that, in described crossbeam, box hat and concrete weight ratio are 0.2:1 ~ 0.5:1.
8. rail track traffic two-wire rail beam is embraced in a kind of magnetic suspension according to claim 1, and it is characterized in that, the tensile strength of described crossbeam is greater than 10MPa.
9. rail track traffic two-wire rail beam is embraced in a kind of magnetic suspension according to claim 1, and it is characterized in that, the compressive strength of described crossbeam is greater than 15MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510952988.6A CN105568789B (en) | 2015-12-17 | 2015-12-17 | Rail track traffic two-wire track girder is embraced in a kind of magnetic suspension |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510952988.6A CN105568789B (en) | 2015-12-17 | 2015-12-17 | Rail track traffic two-wire track girder is embraced in a kind of magnetic suspension |
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| CN105568789A true CN105568789A (en) | 2016-05-11 |
| CN105568789B CN105568789B (en) | 2017-09-22 |
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| CN201510952988.6A Active CN105568789B (en) | 2015-12-17 | 2015-12-17 | Rail track traffic two-wire track girder is embraced in a kind of magnetic suspension |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017101767A1 (en) * | 2015-12-17 | 2017-06-22 | 中铁第四勘察设计院集团有限公司 | Double-track beam for magnetic-levitation rail-wrap-type rail transit |
| WO2017101768A1 (en) * | 2015-12-17 | 2017-06-22 | 中铁第四勘察设计院集团有限公司 | Double-track beam for rail-wrap-type rail transit |
| CN114134765A (en) * | 2021-11-26 | 2022-03-04 | 中铁第四勘察设计院集团有限公司 | Track beam supporting system and installation method |
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| KR20130089620A (en) * | 2012-02-02 | 2013-08-12 | 위드현 주식회사 | Steel box girder bridge having cross beam enhanced stiffness and construction method thereof |
| CN203654157U (en) * | 2013-12-05 | 2014-06-18 | 深圳市市政设计研究院有限公司 | Track beam structure supported by double-layer rods |
| CN203834337U (en) * | 2014-05-12 | 2014-09-17 | 上海市隧道工程轨道交通设计研究院 | Elevated rail traffic station integrated bridge structure |
| CN204282185U (en) * | 2014-11-28 | 2015-04-22 | 中铁第四勘察设计院集团有限公司 | A kind of armful rail magnetic levitation track traffic bridge |
| CN104594173A (en) * | 2014-11-28 | 2015-05-06 | 中铁第四勘察设计院集团有限公司 | Rail holding type electromagnetic suspension track traffic box girder |
| CN104912004A (en) * | 2015-06-25 | 2015-09-16 | 中铁第四勘察设计院集团有限公司 | Hold rail-type track transportation bridge evacuation maintenance platform |
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2015
- 2015-12-17 CN CN201510952988.6A patent/CN105568789B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20130089620A (en) * | 2012-02-02 | 2013-08-12 | 위드현 주식회사 | Steel box girder bridge having cross beam enhanced stiffness and construction method thereof |
| CN203654157U (en) * | 2013-12-05 | 2014-06-18 | 深圳市市政设计研究院有限公司 | Track beam structure supported by double-layer rods |
| CN203834337U (en) * | 2014-05-12 | 2014-09-17 | 上海市隧道工程轨道交通设计研究院 | Elevated rail traffic station integrated bridge structure |
| CN204282185U (en) * | 2014-11-28 | 2015-04-22 | 中铁第四勘察设计院集团有限公司 | A kind of armful rail magnetic levitation track traffic bridge |
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| CN104912004A (en) * | 2015-06-25 | 2015-09-16 | 中铁第四勘察设计院集团有限公司 | Hold rail-type track transportation bridge evacuation maintenance platform |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017101767A1 (en) * | 2015-12-17 | 2017-06-22 | 中铁第四勘察设计院集团有限公司 | Double-track beam for magnetic-levitation rail-wrap-type rail transit |
| WO2017101768A1 (en) * | 2015-12-17 | 2017-06-22 | 中铁第四勘察设计院集团有限公司 | Double-track beam for rail-wrap-type rail transit |
| CN114134765A (en) * | 2021-11-26 | 2022-03-04 | 中铁第四勘察设计院集团有限公司 | Track beam supporting system and installation method |
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| Publication number | Publication date |
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| CN105568789B (en) | 2017-09-22 |
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