CN107724225B - Suspension type single-rail large-span track beam system - Google Patents
Suspension type single-rail large-span track beam system Download PDFInfo
- Publication number
- CN107724225B CN107724225B CN201711168498.2A CN201711168498A CN107724225B CN 107724225 B CN107724225 B CN 107724225B CN 201711168498 A CN201711168498 A CN 201711168498A CN 107724225 B CN107724225 B CN 107724225B
- Authority
- CN
- China
- Prior art keywords
- tower
- bridge
- main beam
- rail
- bridge tower
- 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
Images
Classifications
-
- 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
-
- 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
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention belongs to the technical field of rail transit, and discloses a suspension type single-rail large-span rail beam system, which comprises a main beam and a steel box rail beam, wherein the longitudinal direction of the main beam extends along the front-rear direction, the main beam comprises a top beam and two side boxes, and the two side boxes are parallel to each other and are respectively arranged at the left end and the right end of the bottom of the top beam; the left side box and the right side box respectively penetrate through the bridge tower at the corresponding side and are embedded on the bridge tower at the corresponding side, so that the fixed connection between the bridge tower and the main beam is realized; in addition, each side box is connected with a bridge tower at the corresponding side through stay cables; the steel box track beams are arranged in two, the longitudinal direction of each steel box track beam extends along the front-rear direction, each steel box track beam is respectively hung on the top beam, and the two steel box track beams are located between the two side boxes. The invention has the characteristics of simple structure and definite stress, and solves the requirements of structural safety and use functions of the suspended single-rail large-span track beam.
Description
Technical Field
The invention belongs to the technical field of rail transit, and particularly relates to a suspension type single-rail large-span rail beam system.
Background
The suspended type single track traffic belongs to a novel technology of the track traffic, the suspended type track traffic has no technical specification and less data for reference, the suspended type track traffic has a long history in developed nations abroad, but the suspended type single track of each country is mainly provided with a conventional span (the span is less than or equal to 30 m). At present, only two test lines in China are arranged in a conventional span mode, so that a suspended type single-rail large-span track beam system is an urgent task of the conventional suspended type single rail.
The domestic test line adopts the small-section steel box rail beam structure with the opening of the bottom plate abroad, and the steel rail beam has the problems of small width-span ratio, easy buckling, small bearing capacity, large deformation, easy corrosion and the like, and the rail beam structure is single to prevent the popularization of the suspension type rail.
After the span of the conventional steel box track beam structure exceeds 35m, the vertical deflection of the track beam is difficult to meet the requirement on the maximum allowable deflection of the bridge structure in the railway bridge and culvert design Specification (TB 10002-2017) and the subway design Specification (GB 50157-2013).
At present, research on rail beams at home and abroad is mainly focused on research on conventional suspension type bridge structure systems, and the conventional span suspension type single-rail bridge structure system has a large occupation ratio in construction, but because of the diversity of crossing obstacles in cities or scenic spots, the suspension type single-rail large-span rail beam is indispensable and sometimes becomes a key node of suspension type implementation or not, so that the problem that the suspension type single-rail large-span rail beam system is an urgent task is solved.
In summary, although the suspended type monorail transportation system has been in the past century abroad, but the research data available for reference at home and abroad are very few, the current domestic test lines all adopt small-section steel box rail beams with bottom plates open, systematic research on the suspended type monorail transportation system has not been carried out at home, and some problems to be solved are still existed.
Disclosure of Invention
Aiming at the defects or improvement demands of the prior art, the invention provides a suspension type single-rail large-span track beam system which has the characteristics of simple structure and definite stress, and solves the requirements of structural safety and use functions of the suspension type single-rail large-span track beam.
In order to achieve the above object, according to the present invention, there is provided a suspended monorail large-span rail girder system, characterized by comprising a main girder and a steel box rail girder, wherein,
the longitudinal direction of the main beam extends along the front-back direction, the main beam comprises a top beam and two side boxes, the two side boxes are parallel to each other, and each side box is respectively arranged at the left end and the right end of the bottom of the top beam, so that the main beam is in an inverted U shape; the left side box and the right side box respectively penetrate through the bridge tower at the corresponding side and are embedded on the bridge tower at the corresponding side, so that the fixed connection between the bridge tower and the main beam is realized; in addition, each side box is connected with a bridge tower at the corresponding side through stay cables;
the steel box track beams are arranged in two, the longitudinal direction of each steel box track beam extends along the front-rear direction, each steel box track beam is respectively hung on the top beam, and the two steel box track beams are located between the two side boxes.
Preferably, the part of the bridge tower above the top beam is an upper tower column, and the bridge tower is fixedly connected with the top beam and the left and right upper bridge towers in a transverse connection manner.
Preferably, the side box comprises a tower beam consolidation section, a main beam gradual change section and a main beam standard section, wherein the tower beam consolidation Duan Qianru is arranged in the bridge tower and both ends of the tower beam consolidation section are exposed out of the bridge tower, the thickness of the tower beam consolidation section is larger than that of the main beam standard section, and the tower beam consolidation section and the main beam standard section are connected and transited through the main beam gradual change section.
Preferably, the part of the bridge tower below the top beam is a lower tower column, and the lower cross beam of the bridge tower fixedly connects the left bridge tower and the right bridge tower together.
In general, the above technical solutions conceived by the present invention, compared with the prior art, enable the following beneficial effects to be obtained:
1) The invention provides a bridge-under-bridge structure concept of a suspension type single-rail large-span track beam system, namely the structure of a main beam is divided into two layers, the upper layer is a large-span main bridge structure, and the lower layer is a suspension type track beam. The bridge-under-bridge structure concept has the characteristics of simple structure and definite stress, and solves the requirements of structural safety and use functions of the suspension type single-rail large-span track beam.
2) The tower girder is fixedly connected with the inverted U-shaped cable-stayed bridge suspension type single-rail large-span track system, the multi-point elastic support system of the cable-stayed bridge ensures the requirements of stress, deformation and rigidity of a large-span structure, and the tower girder is fixedly connected with the requirements of earthquake resistance, driving safety and comfort in high-intensity areas.
3) The construction method of the suspension type single-rail large-span track beam system is mature, convenient and quick: the system can adopt any one of a cantilever method, a swivel and a bracket cast-in-situ construction method according to the site situation, and the construction method can select an economic and safe method according to the site situation.
4) The suspended type single-rail large-span track beam structure has the advantages of small combined height, small occupied volume, space saving and convenient installation.
5) The suspended type single-rail large-span structure is convenient to overhaul and maintain.
Drawings
FIG. 1 is a cross-sectional view of a large-span main beam of the present invention;
FIG. 2 is a cross-sectional view of a tower beam consolidation according to the present invention;
FIG. 3 is a cross-sectional view of a tower beam in accordance with the present invention;
fig. 4 is a schematic elevational view of a cable-stayed bridge according to the invention.
In the figure: 1-a steel box track beam; 2-top beam; 3-side box; 4-stay cables; 5-vehicle confinement; 6-tower beam consolidation structure; 7, fixedly connecting a bridge tower in a transverse connection manner; 8-a lower cross beam of the bridge tower; 9-loading a tower column; 10-lower tower column; 11-a standard section of the main girder; 12-a tower beam consolidation section; 13-a main girder gradual change section; 14-bridge tower.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Referring to fig. 1-4, a suspended monorail large span rail beam system comprises a main beam and a steel box rail beam 1, wherein,
the longitudinal direction of the main beam extends along the front-rear direction, the main beam comprises a top beam 2 and two side boxes 3, the two side boxes 3 are parallel to each other, and each side box 3 is respectively arranged at the left end and the right end of the bottom of the top beam 2, so that the main beam is in an inverted U shape; the left side box 3 and the right side box 3 respectively penetrate through and are embedded into bridge towers 14 at the corresponding sides, so that a tower beam consolidation structure 6 is formed at the intersection; in addition, each side box 3 is connected with a bridge tower 14 at the corresponding side through stay cables 4;
the steel box track beams 1 are arranged in two, the longitudinal direction of each steel box track beam 1 extends along the front-back direction, each steel box track beam 1 is respectively hung on the top beam 2, and the two steel box track beams 1 are positioned between the two side boxes 3. The steel box track beam 1 is used for suspending air trains, and when two air trains are combined, attention is paid to leaving a vehicle limit 5.
Further, the part of the bridge tower 14 above the top beam 2 is an upper tower column 9, and the bridge tower fixedly connected cross-link 7 fixedly connects the top beam 2 with the left upper tower column 9 and the right upper tower column 9.
Further, the side box 3 comprises a tower beam consolidation section 12, a girder gradual change section 13 and a girder standard section 11, the tower beam consolidation section 12 is embedded into the bridge tower 14, both ends of the tower beam consolidation section are exposed out of the bridge tower 14, the thickness of the tower beam consolidation section 12 is larger than that of the girder standard section 11, and the tower beam consolidation section 12 and the girder standard section 11 are connected and transited through the girder gradual change section 13.
Further, the portion of the bridge tower 14 below the top beam 2 is a lower tower column 10, and the lower bridge tower cross beam 8 fixedly connects the left and right lower tower columns 10 together.
Aiming at the fact that the existing built suspension type track beam adopts a bridge span structural form of a steel box with an opening of a bottom plate, a concrete feasible scheme of a suspension type single-rail large-span track beam system is provided, and specific technical measures are as follows:
(1) the invention adopts the inverted U-shaped section, the two oppositely arranged box bodies and the top plate are utilized to form the inverted U-shaped section, the hanging plate for hanging the track beam is embedded below the top plate between the two box bodies, and the hanging track beam can be hung below the top plate between the two box bodies.
(2) Stay cables 4 are anchored in the box girders at both sides of the structural section to form a multi-point elastic support system structure.
(3) To reduce the structural section size, the cable-stayed bridge tower 14 is retracted, two side boxes 3 with inverted U-shaped section are 'inserted' into the tower columns to form tower beam rigid connection, a transverse link is arranged on the beam in the wide range of the tower, and a transverse link is also arranged below the travelling limit of the suspended train to form a transverse frame system of the bridge tower 14.
(4) The two ends of the bridge span are fixedly connected with the tower beams and can be locally heightened in section.
(5) The top plate with the inverted U-shaped section and the two side boxes 3 are provided with longitudinal prestress steel bundles to meet the stress requirements of operation and construction, and the top plate with the inverted U-shaped section is also provided with transverse prestress steel bundles.
The technical problem of the large span of the suspension type monorail is solved through the measures, the rigidity and the stability of the large span structure are guaranteed, meanwhile, sufficient space is provided for equipment installation, the beam top of the structure can be used as a maintenance and evacuation platform, and the large span structure is convenient to construct.
The suspension type monorail large-span track beam system provided by the invention can adopt a cantilever method, a swivel and a bracket cast-in-situ construction method. Firstly, the construction method firstly finishes pile foundation construction, then pours a bearing platform, then adopts a climbing form to cast-in-situ construction of the bridge tower 14, and reserves a girder longitudinal prestressed pipeline, a reinforcing steel bar and the like of a tower beam concreted part. The swivel and the support cast-in-situ are used for constructing the inverted U-shaped beam by taking the support, tensioning the girder, connecting the tensioning stay cable 4 after the girder construction is completed, dismantling the track beam under the support mounting bridge, and finally adjusting the bridge cable force and completing other accessory mounting. The construction method of cantilever casting is adopted, a pier-side bracket and a template are arranged at a main tower after the construction of a bridge tower 14 is completed, steel bars are bound, a cast-in-place section below the casting tower is cast, after the strength of concrete meets the requirement, an end mould, a side mould and an inner mould are removed, a longitudinal and transverse prestressed beam is tensioned, guy cable hanging baskets are symmetrically assembled on a main girder, guy cables 4 and prestress of corresponding sections are tensioned by utilizing the guy cable hanging baskets to symmetrically cast the two sides of the tower in a hanging way section by section, a side span falsework casting side hole cast-in-place section is reasonably arranged, after the construction of the main girder structure is completed, a track beam under the bridge is installed, and finally bridge cable force is adjusted and other accessory installation is completed. In a word, the whole structural arrangement makes the suspended single-rail large-span track beam compact in structure, small in body quantity, simple in construction and attractive in structure.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (2)
1. A suspension type single-rail large-span track beam system is characterized by comprising a main beam and a steel box track beam, wherein,
the longitudinal direction of the main beam extends along the front-back direction, the main beam comprises a top beam and two side boxes, the two side boxes are parallel to each other, and each side box is respectively arranged at the left end and the right end of the bottom of the top beam, so that the main beam is in an inverted U shape; the left side box and the right side box respectively penetrate through the bridge tower at the corresponding side and are embedded on the bridge tower at the corresponding side, so that the fixed connection between the bridge tower and the main beam is realized; in addition, each side box is connected with a bridge tower at the corresponding side through stay cables; the bridge tower is fixedly connected with the top beam and the left and right upper tower columns in a transverse connection manner; the part of the bridge tower below the top beam is a lower tower column, and a lower cross beam of the bridge tower fixedly connects the left lower tower column and the right lower tower column together;
the steel box track beams are arranged in two, the longitudinal direction of each steel box track beam extends along the front-rear direction, each steel box track beam is respectively hung on the top beam, and the two steel box track beams are located between the two side boxes.
2. A suspended monorail large span rail beam system according to claim 1, wherein said side box comprises a tower beam consolidation section, a main beam transition section and a main beam standard section, said tower beam consolidation Duan Qianru is in said bridge tower and both ends thereof are exposed to said bridge tower, said tower beam consolidation section has a thickness greater than said main beam standard section, said tower beam consolidation section and said main beam standard section are joined and transited by said main beam transition section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711168498.2A CN107724225B (en) | 2017-11-21 | 2017-11-21 | Suspension type single-rail large-span track beam system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711168498.2A CN107724225B (en) | 2017-11-21 | 2017-11-21 | Suspension type single-rail large-span track beam system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107724225A CN107724225A (en) | 2018-02-23 |
| CN107724225B true CN107724225B (en) | 2023-05-16 |
Family
ID=61216599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711168498.2A Active CN107724225B (en) | 2017-11-21 | 2017-11-21 | Suspension type single-rail large-span track beam system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107724225B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108505427A (en) * | 2018-04-03 | 2018-09-07 | 中铁第四勘察设计院集团有限公司 | A kind of anchor and the oblique pull suspension type monorail using the anchor |
| US20210323583A1 (en) * | 2018-09-03 | 2021-10-21 | Beijing Jiaotong University | Logistic monorail transportation system |
| CN113605211A (en) * | 2021-07-05 | 2021-11-05 | 中铁第四勘察设计院集团有限公司 | Suspension type monorail continuous rigid frame arch bridge |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203603023U (en) * | 2013-11-19 | 2014-05-21 | 中铁第四勘察设计院集团有限公司 | Cable-stayed bridge tower beam pier consolidation structure |
| CN105714625A (en) * | 2015-11-10 | 2016-06-29 | 北京交通大学 | Suspension type monorail transportation concrete structure suspension system |
| CN205387644U (en) * | 2016-03-15 | 2016-07-20 | 四川中德空铁科技有限公司 | Improvement structure of monorail train large -span foundation pile |
| WO2017052352A1 (en) * | 2015-09-21 | 2017-03-30 | Mercado Mendoza Luis Ricardo | Structure of interconnected suspension cables for elevated monorail |
| CN207812257U (en) * | 2017-11-21 | 2018-09-04 | 中铁第四勘察设计院集团有限公司 | A kind of suspension type monorail Long span track girder system |
-
2017
- 2017-11-21 CN CN201711168498.2A patent/CN107724225B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203603023U (en) * | 2013-11-19 | 2014-05-21 | 中铁第四勘察设计院集团有限公司 | Cable-stayed bridge tower beam pier consolidation structure |
| WO2017052352A1 (en) * | 2015-09-21 | 2017-03-30 | Mercado Mendoza Luis Ricardo | Structure of interconnected suspension cables for elevated monorail |
| CN105714625A (en) * | 2015-11-10 | 2016-06-29 | 北京交通大学 | Suspension type monorail transportation concrete structure suspension system |
| CN205387644U (en) * | 2016-03-15 | 2016-07-20 | 四川中德空铁科技有限公司 | Improvement structure of monorail train large -span foundation pile |
| CN207812257U (en) * | 2017-11-21 | 2018-09-04 | 中铁第四勘察设计院集团有限公司 | A kind of suspension type monorail Long span track girder system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107724225A (en) | 2018-02-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108505405B (en) | Combined construction structure of suspension type monorail and highway bridge | |
| CN107724225B (en) | Suspension type single-rail large-span track beam system | |
| CN105735101B (en) | A kind of high-speed railway repairing beam and its emergency repair method that can be exchanged into permanent bridge structure | |
| CN205295820U (en) | Heavy load type monorail train | |
| CN217104732U (en) | Sectional type crossbeam construction structures of strideing across existing railway line gate-type pier | |
| CN105568786B (en) | Overhanging combination box track roof beam suspension system of suspension type monorail transit bottom plate | |
| CN103046463A (en) | Assembly type saddle-shell-shaped bottom plate continuous box girder bridge and construction method thereof | |
| CN113652948A (en) | High-speed railway cable-stayed bridge with improved rigidity | |
| CN107905043B (en) | Combined rail beam system of steel web truss with suspended bottom plate opening | |
| CN109930469B (en) | Steel box girder thin-wall pier rigid frame cable-stayed bridge suitable for straddle type monorail | |
| CN105586813B (en) | Suspended monorail traffic bottom plate opening combined box type track beam suspension system | |
| CN212533553U (en) | Rubber-tyred trolley car guide rail, rail and road | |
| CN211815595U (en) | Lower tower column tension and compression structure for cable tower | |
| CN207314053U (en) | Support device based on empty rail train rail | |
| CN108824484B (en) | Vehicle section covered steel frame and covered reinforced concrete frame mixed structure | |
| CN207812257U (en) | A kind of suspension type monorail Long span track girder system | |
| CN208472473U (en) | A kind of suspension type monorail and highway bridge build structure jointly | |
| CN215669003U (en) | Be applied to anti-wind guardrail device of composite beam | |
| CN111893816A (en) | Rubber-tyred trolley car guide rail, rail and road | |
| CN211815522U (en) | External prestress steering structure | |
| CN211772868U (en) | Pier temporary consolidation device in large-span continuous beam | |
| CN113584962A (en) | Rubber-tyred tramcar double-box steel-concrete combined track beam structure and construction method thereof | |
| CN114182620A (en) | Partial cable-stayed bridge structure system of large cantilever core steel box and construction method | |
| CN210712511U (en) | Straddle type monorail transit long-span simply-supported arch bridge | |
| CN210917010U (en) | Tube-in-tube bridge tower of space mixed cable net suspension bridge with parabolic arched tower cap |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |