CN108589512B - Steel-concrete combined beam structure suitable for heavy-duty railway - Google Patents
Steel-concrete combined beam structure suitable for heavy-duty railway Download PDFInfo
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- CN108589512B CN108589512B CN201810556549.7A CN201810556549A CN108589512B CN 108589512 B CN108589512 B CN 108589512B CN 201810556549 A CN201810556549 A CN 201810556549A CN 108589512 B CN108589512 B CN 108589512B
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- 239000004567 concrete Substances 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 60
- 239000010959 steel Substances 0.000 claims abstract description 60
- 230000007704 transition Effects 0.000 claims abstract description 10
- 239000002131 composite material Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000007689 inspection Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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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- Engineering & Computer Science (AREA)
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- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a steel-concrete combined beam structure suitable for heavy-duty railways, wherein a steel main beam adopts duplex section steel, a stud is welded on the upper surface of the I-shaped steel to connect the steel main beam and a bridge deck into a whole, a beam body adopts a variable cross section design, the height of the beam body at the end part can be adjusted according to requirements, the variable cross section adopts arc transition, stiffening ribs are arranged at the arc transition section and the top beam point of the steel main beam, and a middle cross connection or an end cross connection is arranged between the duplex section steel. The duplex steel girder has open space, so that the inspection and maintenance are convenient; the beam body has a simple structure, can be manufactured in a factory as required and then transported to a bridge site for erection, and can also be assembled at the bridge site for cast-in-place concrete; the requirement of the bridge pier on the limitation of the structure height is met through the variable cross-section design; and the beam body structure is ensured to have enough transverse rigidity by a transverse connection mode.
Description
Technical Field
The invention relates to a beam structure, in particular to a steel-concrete combined beam structure suitable for a heavy-duty railway.
Background
Heavy haul railway transportation is widely regarded by railways of all countries in the world due to large transportation capacity, high efficiency and low transportation cost, and heavy haul trains are started to be operated in large quantities on the mixed passenger and cargo transportation trunk line mainly for passenger transport in Europe through upgrading and reforming existing lines or newly building heavy haul railways of the heavy haul railway in America, Canada, Brazil, Australia, south Africa and the like. A large number of 25t axle load heavy-duty trains are operated on the China Daqin railway, the Shuhuang railway has the capacity of operating 30t axle load heavy-duty trains through reinforced transformation, the newly-built Wari railway and Monghua railway designed according to 30t axle load have the capacity of operating 30t axle load heavy-duty trains, and in addition, the China railway general company develops 27t axle load trains on the existing railway lines.
In railway construction, a bridge has various forms as a structure for crossing barriers such as rivers, roads and the like, including prestressed concrete beams, reinforced concrete beams and steel beams, and a small number of steel-concrete composite beam structures suitable for heavy-duty railways are adopted, such as a deck type steel box girder composite beam, a deck type steel truss girder composite beam and the like. For medium and small spans in the process of newly building a heavy haul railway or strengthening and transforming an existing railway, the existing structural form of the combined beam is adopted, and certain defects exist.
The steel-concrete combined beam structure applied to the existing heavy-duty railway and suitable for the heavy-duty railway is mainly used in newly-built lines, is generally a steel box girder combined beam or a steel truss girder combined beam, has an applicable span of 32m or more, and is complex in structure and large in self weight; it is not suitable for medium and small spans. (1) When the existing steel box girder combination beam is used in a middle and small span bridge, personnel cannot enter the steel box for inspection and maintenance due to the small building height; the combined beam of the lower bearing type steel truss and the main beam has too large building height, large steel and concrete consumption and unnecessary waste. (2) when the existing line is strengthened and reformed, the height or the upper space of the beam body is often limited at the pier, and the existing type combination beam cannot meet the requirement.
Disclosure of Invention
The invention aims to provide a steel-concrete combined beam structure suitable for heavy-duty railways. To solve the above-mentioned drawbacks of the background art.
The technical problem solved by the invention is realized by adopting the following technical scheme:
a steel-concrete composite beam structure suitable for heavy-duty railways is characterized in that a steel girder adopts duplex section steel, the steel girder and a bridge deck are connected into a whole, a ballast blocking wall is arranged on the bridge deck, a beam body of the steel girder adopts a variable cross section design, the height of the beam body at the end part is lower than that of a middle beam body, the variable cross section is in arc transition, and the duplex section steel is connected by a transverse connection; the transverse connection comprises a middle transverse connection and an end transverse connection arranged at the support; the steel main beam and the bridge deck are connected into a whole by welding studs or shear nails on the upper surface of the duplex steel;
the steel main beam structures are connected through a web plate, and stiffening ribs are arranged on the outer side of the web plate; the middle part of the beam is transversely communicated with the high-strength bolt and the gusset plate and is connected with the two I-shaped steel girder web stiffening ribs;
stiffening ribs are arranged at the arc transition section, the top beam point and the support of the steel main beam, and the stiffening ribs are along the extension direction of the steel main beam structure;
the end cross-connection plate is equal to the I-shaped steel main beam in height, the upper flange of the end cross-connection is connected with the upper edge of the steel main beam through a ceramic liner butt welding seam, the end cross-connection web plate is connected with the steel main beam stiffening rib at the support through a high-strength bolt, and the end cross-connection lower flange is connected with the lower flange of the steel main beam through a high-strength bolt.
The invention has the beneficial effects that: the structure is simple, the dead weight is light, the construction is convenient, the beam can be replaced by a hoisting frame beam or an elevated platform after prefabrication, and a concrete bridge deck can also be cast in situ at the bridge position; the beam body variable cross-section design has good adaptability to the height limitation of the existing line pier and attractive appearance; the variable cross section adopts arc line transition, and a group of short stiffening ribs are arranged, so that the concentrated stress can be effectively reduced; the connection mode of the end transverse connection and the steel main beam improves the fatigue stress performance of the beam end.
Drawings
FIG. 1 is a schematic elevation view of a steel-concrete composite beam structure suitable for heavy-duty railways
FIG. 2 is a cross-sectional view of the present invention 1-1 (beam end having no cross-connection)
FIG. 3 is a cross-sectional view taken along line 2-2 of the present invention (at the cross-section of the end portion)
FIG. 4 is a cross-sectional view of the present invention taken along line 3-3 (at the middle cross-section)
FIG. 5 is a sectional view of the present invention taken along line 4-4 (without cross-linking in the middle)
FIG. 6 is a cross-sectional view taken along line 5-5 of the present invention (at a cross-over junction)
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
As shown in the figure: the utility model provides a steel-concrete composite beam structure suitable for heavy-duty railway, steel girder 3 is through surface welding stud or shear force nail 8, connects steel girder 3 and decking 2 as whole, and steel girder 3 adopts duplex shaped steel, is equipped with on the decking and keeps off tiny fragments of stone, coal, etc. wall 1. The roof beam body adopts the variable cross section design, and the tip roof beam body height can be adjusted as required, and the tip roof beam body height is less than the height of the middle roof beam body, and variable cross section department adopts the pitch arc transition, and steel girder arc transition section department is equipped with stiffening rib 5, and roof beam point department stiffening rib 6, steel girder structure pass through the web and connect, and the outside of web is provided with stiffening rib 7, and stiffening rib is along the extending direction of 3 structures of steel girder. The middle part of the beam is transversely communicated with the high-strength bolt and the gusset plate 9 and is connected with the two I-shaped steel girder web stiffening ribs 4; the height of the end cross connection 10 at the support is equal to that of the I-shaped steel main beam 3, the upper flange of the end cross connection 10 is connected with the upper edge of the steel main beam through a ceramic liner butt welding seam 11, and the web of the end cross connection 10 is connected with the steel main beam stiffening rib 7 at the support, the lower flange of the end cross connection 10 and the lower flange of the steel main beam through high-strength bolts.
The duplex steel girder has open space, and is convenient to inspect and maintain; the beam body has a simple structure, can be manufactured in a factory as required and then transported to a bridge site for erection, and can also be assembled at the bridge site for cast-in-place concrete; the requirement of limiting the height of the structure at the pier is met through the design of the variable cross section, the variable cross section adopts arc transition, and a group of short stiffening ribs are arranged, so that the concentrated stress can be effectively reduced; and the beam body structure is ensured to have enough transverse rigidity by a transverse connection mode.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. A steel-concrete composite beam structure suitable for heavy-duty railways is characterized in that a steel girder adopts duplex section steel, the steel girder and a bridge deck are connected into a whole, a ballast blocking wall is arranged on the bridge deck, a beam body of the steel girder adopts a variable cross section design, the height of the beam body at the end part is lower than that of a middle beam body, the variable cross section is in arc transition, and the duplex section steel is connected by a transverse connection; the transverse connection comprises a middle transverse connection and an end transverse connection arranged at the support; the steel main beam and the bridge deck are connected into a whole by welding studs or shear nails on the upper surface of the duplex steel;
the steel main beam structures are connected through a web plate, and stiffening ribs are arranged on the outer side of the web plate; the middle part of the beam is transversely communicated with the high-strength bolt and the gusset plate and is connected with the two I-shaped steel girder web stiffening ribs;
stiffening ribs are arranged at the arc transition section, the top beam point and the support of the steel main beam, and the stiffening ribs are along the extension direction of the steel main beam structure;
the end cross-connection plate is equal to the I-shaped steel main beam in height, the upper flange of the end cross-connection is connected with the upper edge of the steel main beam through a ceramic liner butt welding seam, the end cross-connection web plate is connected with the steel main beam stiffening rib at the support through a high-strength bolt, and the end cross-connection lower flange is connected with the lower flange of the steel main beam through a high-strength bolt.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810556549.7A CN108589512B (en) | 2018-05-31 | 2018-05-31 | Steel-concrete combined beam structure suitable for heavy-duty railway |
| BR112020024195-4A BR112020024195B1 (en) | 2018-05-31 | 2018-06-05 | CONCRETE AND STEEL BAR STRUCTURE SUITABLE FOR A HEAVY TRANSPORT RAILWAY |
| PCT/CN2018/090002 WO2019227516A1 (en) | 2018-05-31 | 2018-06-05 | Steel-concrete composite beam structure suitable for heavy haul railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810556549.7A CN108589512B (en) | 2018-05-31 | 2018-05-31 | Steel-concrete combined beam structure suitable for heavy-duty railway |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108589512A CN108589512A (en) | 2018-09-28 |
| CN108589512B true CN108589512B (en) | 2020-06-26 |
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| CN201810556549.7A Active CN108589512B (en) | 2018-05-31 | 2018-05-31 | Steel-concrete combined beam structure suitable for heavy-duty railway |
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| Country | Link |
|---|---|
| CN (1) | CN108589512B (en) |
| BR (1) | BR112020024195B1 (en) |
| WO (1) | WO2019227516A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523067A (en) * | 2020-12-02 | 2021-03-19 | 广州大学 | Combined beam |
| CN114351572A (en) * | 2022-01-26 | 2022-04-15 | 山东省交通规划设计院集团有限公司 | Bridge system for small-angle crossing of operation road without interrupting traffic construction |
| CN114790706A (en) * | 2022-04-27 | 2022-07-26 | 中铁大桥局集团第五工程有限公司 | Construction method for detachable support of cantilever cast-in-place plate of steel-concrete composite beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5039490B2 (en) * | 2007-09-27 | 2012-10-03 | 株式会社Ｉｈｉインフラシステム | Method and apparatus for post-installation of water-stopping material |
| CN201155080Y (en) * | 2008-02-14 | 2008-11-26 | 黄诚 | Large-span V-shaped continuous rigid frame bridge |
| KR100891924B1 (en) * | 2008-05-16 | 2009-04-08 | (주)미래기술단 | Variable section u-type girder for temporary bridge |
| KR101434898B1 (en) * | 2012-10-26 | 2014-08-27 | 이엔이건설주식회사 | Arch-type deck plate for structure, and method for constructing structure using the same |
| CN104314007B (en) * | 2014-10-09 | 2016-03-23 | 中铁十局集团有限公司 | A kind of dilatory with large span heavy duty slipway beam |
| CN205421019U (en) * | 2016-03-17 | 2016-08-03 | 河海大学 | Pretension steel-concrete composite beam bridge deck |
| CN206189249U (en) * | 2016-07-22 | 2017-05-24 | 邵旭东 | Steel light -duty combination beam of an ultra high performance concrete letter change continuous structure structure |
| CN208328661U (en) * | 2018-05-31 | 2019-01-04 | 中国铁道科学研究院铁道建筑研究所 | A kind of steel-concrete composite beam structure suitable for heavy haul railway |
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2018
- 2018-05-31 CN CN201810556549.7A patent/CN108589512B/en active Active
- 2018-06-05 WO PCT/CN2018/090002 patent/WO2019227516A1/en active Application Filing
- 2018-06-05 BR BR112020024195-4A patent/BR112020024195B1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019227516A1 (en) | 2019-12-05 |
| BR112020024195A2 (en) | 2021-02-17 |
| CN108589512A (en) | 2018-09-28 |
| BR112020024195B1 (en) | 2021-09-28 |
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