CN203639802U - Large-span railway cable-stayed bridge girder structure - Google Patents
Large-span railway cable-stayed bridge girder structure Download PDFInfo
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- CN203639802U CN203639802U CN201320745123.9U CN201320745123U CN203639802U CN 203639802 U CN203639802 U CN 203639802U CN 201320745123 U CN201320745123 U CN 201320745123U CN 203639802 U CN203639802 U CN 203639802U
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Abstract
The utility model discloses a large-span railway cable-stayed bridge girder structure which comprises steel box edge beams, a vertical and horizontal beam bridge floor system and a horizontal K support, wherein the steel box edge beams are positioned on two sides of a section; the vertical and horizontal beam bridge system is positioned at the middle part of the section, and comprises vertical beams and horizontal beams, connected in a crossed manner; cross ribs connected with the vertical beams in a crossed manner are arranged between the horizontal beams; a concrete bridge floor is arranged at the top of the vertical and horizontal beam bridge system; the vertical and horizontal beam bridge system is connected with the side parts of the steel box edge beams through the horizontal K support. A cable-stayed bridge girder comprises the steel box edge beams, the vertical and horizontal beam bridge floor system and the horizontal K support. Compared with a conventional steel box girder, a larger bridge floor width can be provided, and meanwhile, the steel box edge beams are distributed on the two sides of the section, so that the transverse stiffness of the bridge is improved greatly, and the technical problem of low transverse stiffness of the cable-stayed bridge is solved; compared with a conventional steel trussed beam, the wind resistance of the girder and the operating wind speed threshold value of a train are improved, and the steel consumption is reduced.
Description
Technical field
The utility model relates to bridge construction technical field, specifically the Long-Span Railway Cable-Stayed Bridge main beam structure of a kind of 500～900 meters.
Background technology
500 meters of above Railway Cable-stayed Bridge girders of main span all adopt steel truss girder at present, or are improved on this basis steel case trusses, do not apply steel case beam.
In Railway Cable-stayed Bridge in main span more than 500 meters, do not adopt steel case beam be mainly because conventional steel case beam in the time that bridge floor is only arranged two alignment cars, bridge deck width is narrower, still, strengthens simply bridge deck width, can make stock utilization greatly reduce, and has increased cost.Can not meet again the requirement of train travel to lateral stiffness simultaneously.
Although steel truss girder technology maturation, but be applied in and on super-span (500～900 meters) railroad bridge, still have following problem: first, when bridge span is larger, girder needs larger lateral stiffness to ensure traffic safety and the comfortableness of driving, this just requires to increase breadth of section, but in the case of only having that railway arranges, widen steel truss girder bridge deck width and can cause the globality of bridge reduce and waste more material; Secondly, steel truss girder global sections height is large, and rod member is many, and air resistance coefficient is large, and bluff body cross section wind resistance is poor, low at the driving wind speed threshold values of coastal typhoon prone areas train, need establish paravent and ensure travel safety; Finally, because joint structure, bolt hole weaken and the factor such as scab is more, steel truss girder stock utilization is not high, and steel using amount is large.
Utility model content
The utility model is applied the required series of problems of facing for existing steel truss girder and conventional steel case beam in super-span (500～900 meters) Railway Cable-stayed Bridge, a kind of larger lateral stiffness that both possessed is proposed, better wind resistance can be obtained again, the Long-Span Railway Cable-Stayed Bridge main beam structure of stock utilization reduction construction costs can also be improved.
The technical solution adopted in the utility model is: Long-Span Railway Cable-Stayed Bridge main beam structure, is characterized in that: comprise steel case side bar, in length and breadth beam bridge floor system and horizontal K support; Described steel case side bar is positioned at both sides, cross section; Described beam bridge floor is in length and breadth to be positioned at middle part, cross section, and described beam bridge floor is in length and breadth to comprise cross-coupled longitudinal and cross beam, is also provided with and the cross-coupled cross rib of longeron between described crossbeam, and described beam bridge floor is in length and breadth that top is concrete bridge deck; Described bridge deck is in length and breadth connected with described steel case side bar sidepiece by horizontal K support.
Preferably, both sides are steel case side bar, and described steel case side bar comprises top board and base plate, is provided with endosternum and outer web between top board and base plate, and described outer web is provided with tuyere;
Further preferred, described endosternum is provided with junction plate, and described horizontal K support one end is connected with described junction plate.Like this, be convenient to the installation of horizontal K support.
Preferably, described horizontal K support comprises the tie-beam that multiple horizontally disposed diagonal braces arrange with parallel described crossbeam; Described diagonal brace one end is connected with described cross rib, and one end is connected with described junction plate; Described tie-beam one end is connected with described crossbeam, and one end is connected with described junction plate.
Preferably, described crossbeam bottom is provided with crossbeam base plate, and described crossbeam base plate is connected with the base plate of described steel case side bar.
The beneficial effects of the utility model are: cable-stayed bridge main-beam is divided into steel case side bar, in length and breadth beam bridge floor system and three parts of horizontal K support, thereby make no longer the superpose second system stress of bridge deck of steel case side bar, avoided conventional steel case beam and steel truss girder to cause stock utilization phenomenon on the low side because of the impact of two system stress stacks, stock utilization is high; Compare traditional steel case beam larger bridge deck width can be provided, meanwhile, steel case side bar is distributed in both sides, cross section and has greatly improved the lateral stiffness of bridge, has solved the little technical problem of cable stayed bridge lateral stiffness; Compare steel truss girder, improved again girder wind resistance and train operation wind speed threshold values, save steel using amount.
Brief description of the drawings
Fig. 1 is main TV structure schematic diagram of the present utility model
Fig. 2 is local schematic top plan view of the present utility model
Detailed description of the invention
As depicted in figs. 1 and 2, large span stayed-cable bridge main beam structure, both sides are steel case side bar 1, middle part for beam bridge floor be in length and breadth 2, beam bridge floor is 2 to be connected with the sidepiece of described steel case side bar 1 by horizontal K support 3 in length and breadth; Described steel case side bar 1 comprises top board 1.1 and base plate 1.2, is provided with endosternum 1.3 and outer web 1.4 between top board 1.1 and base plate 1.2, and described outer web 1.4 is provided with tuyere 1.5; Described endosternum 1.3 is provided with junction plate 1.6, and described junction plate 1.6 parts embed in described steel case side bar 1, are convenient to like this connection with other members; Described beam bridge floor is in length and breadth 2 to comprise cross-coupled longeron 2.1 and crossbeam 2.2, is also provided with and the cross-coupled cross rib 2.3 of longeron 2.1 between described crossbeam 2.2, and described beam bridge floor is in length and breadth that 2 tops are concrete bridge deck 2.4; Described bridge deck in length and breadth 2 is connected with described steel case side bar 1 by horizontal K support 3.
Preferably, described horizontal K support 3 comprises the tie-beam 3.2 that multiple horizontally disposed diagonal braces 3.1 arrange with parallel described crossbeam 2.2; Described diagonal brace 3.1 one end are connected with described cross rib 2.3, and one end is connected with described junction plate 1.6; Described tie-beam 3.2 one end are connected with described crossbeam 2.2, and one end is connected with described junction plate 1.6.
In order to reduce windage, improve wind resistance, described crossbeam 2.2 bottoms are provided with crossbeam base plate 2.21, and described crossbeam base plate 2.21 is connected with the base plate 1.2 of described steel case side bar 1, and forms arc.
Railway Cable-stayed Bridge girder is divided into three relatively independent parts, i.e. steel case side bar, in length and breadth bridge deck and horizontal K support, three parts can not manufactured production, are then transported to separately on-the-spot installation.
Employing horizontal K support connection steel case side bar and in length and breadth beam bridge floor system, ensured between the two can transmit vertical load, can transmit again the shearing in horizontal plane, thus when ensureing girder globality, increase bridge deck width, further improved the horizontal bending rigidity in cross section simultaneously.Like this, lateral stiffness and bridge floor rigidity are guaranteed.
The vertical rigidity of Railway Cable-stayed Bridge is mainly provided by suspension cable, the vertical bending rigidity of girder is very little for overall vertical rigidity impact, therefore adopt the just relatively little steel case side bar of vertical bending resistance very little on overall vertical rigidity impact, can not affect vertical rigidity.Meanwhile, bridge deck adopts the superimposed certain thickness concrete slab of beam system in length and breadth in length and breadth, can increase bridge deck weight, and then the section area of raising suspension cable, increase drag-line stress, reduce the impact of geometrical non-linearity, thereby further improve overall vertical rigidity.Like this, vertical rigidity is guaranteed.
Steel case side bar adopts existing streamlined section, there is windage little, when the advantages such as wind resistance is good, adopt horizontal K support connected mode, therefore can form many places hollow out at steel case side bar with on the linkage section that beam bridge floor is in length and breadth, further improve the wind resistance of main beam section, ensure the bridge construction self in the multiple district of typhoon and the traffic safety of train.Like this, wind resistance promotes greatly.
Steel case side bar and vehicle-driving in length and breadth bridge deck separate, back is without the effect of wheel load second system, the only stressed effect of the first system entirety, girder permissible stress can improve greatly, thereby reduces girder steel using amount; Meanwhile, compare steel truss girder, this main beam structure form can be well and concrete beam combination, and end bay can adopt concrete box girder like this, forms hybrid beam Railway Cable-stayed Bridge, greatly reduces full-bridge steel using amount, reduction cost.
Claims (5)
1. Long-Span Railway Cable-Stayed Bridge main beam structure, is characterized in that: comprise steel case side bar (1), beam bridge floor system (2) and horizontal K support (3) in length and breadth; Described steel case side bar (1) is positioned at both sides, cross section; The described system of beam bridge floor in length and breadth (2) is positioned at middle part, cross section, the described system of beam bridge floor in length and breadth (2) comprises cross-coupled longeron (2.1) and crossbeam (2.2), between described crossbeam (2.2), be also provided with and the cross-coupled cross rib of longeron (2.1) (2.3), the described system of beam bridge floor in length and breadth (2) top is concrete bridge deck (2.4); Described bridge deck is in length and breadth connected with described steel case side bar (1) sidepiece by horizontal K support (3).
2. Long-Span Railway Cable-Stayed Bridge main beam structure according to claim 1, it is characterized in that: both sides are steel case side bar (1), described steel case side bar (1) comprises top board (1.1) and base plate (1.2), between top board (1.1) and base plate (1.2), be provided with endosternum (1.3) and outer web (1.4), described outer web (1.4) is provided with tuyere (1.5).
3. Long-Span Railway Cable-Stayed Bridge main beam structure according to claim 2, is characterized in that: described endosternum (1.3) is provided with junction plate (1.6), and described horizontal K support (3) is connected with described junction plate (1.6).
4. Long-Span Railway Cable-Stayed Bridge main beam structure according to claim 3, is characterized in that: described horizontal K support (3) comprises the tie-beam (3.2) that multiple horizontally disposed diagonal braces (3.1) arrange with parallel described crossbeam (2.2); Described diagonal brace (3.1) one end is connected with described cross rib (2.3), and one end is connected with described junction plate (1.6); Described tie-beam (3.2) one end is connected with described crossbeam (2.2), and one end is connected with described junction plate (1.6).
5. according to arbitrary described Long-Span Railway Cable-Stayed Bridge main beam structure in claim 1 – 4, it is characterized in that: described crossbeam (2.2) bottom is provided with crossbeam base plate (2.21), and described crossbeam base plate (2.21) is connected with the base plate (1.2) of described steel case side bar (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320745123.9U CN203639802U (en) | 2013-11-21 | 2013-11-21 | Large-span railway cable-stayed bridge girder structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320745123.9U CN203639802U (en) | 2013-11-21 | 2013-11-21 | Large-span railway cable-stayed bridge girder structure |
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| Publication Number | Publication Date |
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| CN203639802U true CN203639802U (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320745123.9U Withdrawn - After Issue CN203639802U (en) | 2013-11-21 | 2013-11-21 | Large-span railway cable-stayed bridge girder structure |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103556566A (en) * | 2013-11-21 | 2014-02-05 | 中铁第四勘察设计院集团有限公司 | Main girder structure of cable-stayed bridge of large-span railway |
| CN104652246A (en) * | 2015-02-13 | 2015-05-27 | 中铁第四勘察设计院集团有限公司 | Sandwich board type steel-concrete combined cross section cable-stayed bridge main beam |
| CN105507146A (en) * | 2015-11-27 | 2016-04-20 | 中铁大桥勘测设计院集团有限公司 | Glass bridge floor stiffening girder used for pedestrian suspension bridge |
| CN106758815A (en) * | 2016-12-29 | 2017-05-31 | 中铁第四勘察设计院集团有限公司 | Bridge floor bridge tower structure is worn in one kind |
| CN106951668A (en) * | 2017-05-04 | 2017-07-14 | 中铁二院工程集团有限责任公司 | The stiffness reliability method and cable-stayed bridge of a kind of Long Span Railway cable-stayed bridge |
| CN107145664A (en) * | 2017-05-04 | 2017-09-08 | 中铁二院工程集团有限责任公司 | A kind of method that Long Span Railway cable-stayed bridge rigidity is controlled by suspension cable |
| CN109056493A (en) * | 2018-09-25 | 2018-12-21 | 中铁二院工程集团有限责任公司 | A kind of railway deck system that horizontal truss is combined with orthotropic steel bridge deck |
-
2013
- 2013-11-21 CN CN201320745123.9U patent/CN203639802U/en not_active Withdrawn - After Issue
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103556566A (en) * | 2013-11-21 | 2014-02-05 | 中铁第四勘察设计院集团有限公司 | Main girder structure of cable-stayed bridge of large-span railway |
| CN103556566B (en) * | 2013-11-21 | 2015-08-19 | 中铁第四勘察设计院集团有限公司 | Long-Span Railway Cable-Stayed Bridge main beam structure |
| CN104652246A (en) * | 2015-02-13 | 2015-05-27 | 中铁第四勘察设计院集团有限公司 | Sandwich board type steel-concrete combined cross section cable-stayed bridge main beam |
| CN104652246B (en) * | 2015-02-13 | 2016-06-15 | 中铁第四勘察设计院集团有限公司 | The board-like Steel-Concrete Composite Sections cable-stayed bridge main-beam of sandwich |
| CN105507146A (en) * | 2015-11-27 | 2016-04-20 | 中铁大桥勘测设计院集团有限公司 | Glass bridge floor stiffening girder used for pedestrian suspension bridge |
| CN106758815A (en) * | 2016-12-29 | 2017-05-31 | 中铁第四勘察设计院集团有限公司 | Bridge floor bridge tower structure is worn in one kind |
| CN106758815B (en) * | 2016-12-29 | 2018-12-14 | 中铁第四勘察设计院集团有限公司 | Bridge floor bridge tower structure is worn in one kind |
| CN106951668A (en) * | 2017-05-04 | 2017-07-14 | 中铁二院工程集团有限责任公司 | The stiffness reliability method and cable-stayed bridge of a kind of Long Span Railway cable-stayed bridge |
| CN107145664A (en) * | 2017-05-04 | 2017-09-08 | 中铁二院工程集团有限责任公司 | A kind of method that Long Span Railway cable-stayed bridge rigidity is controlled by suspension cable |
| CN109056493A (en) * | 2018-09-25 | 2018-12-21 | 中铁二院工程集团有限责任公司 | A kind of railway deck system that horizontal truss is combined with orthotropic steel bridge deck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140611 Effective date of abandoning: 20150819 |
|
| RGAV | Abandon patent right to avoid regrant |