CN111764251A - Continuous rigid frame-steel truss combined bridge for highway-railway layering and manufacturing method thereof - Google Patents
Continuous rigid frame-steel truss combined bridge for highway-railway layering and manufacturing method thereof Download PDFInfo
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- CN111764251A CN111764251A CN202010622805.5A CN202010622805A CN111764251A CN 111764251 A CN111764251 A CN 111764251A CN 202010622805 A CN202010622805 A CN 202010622805A CN 111764251 A CN111764251 A CN 111764251A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 85
- 239000010959 steel Substances 0.000 title claims abstract description 85
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000002131 composite material Substances 0.000 claims abstract description 24
- 238000010276 construction Methods 0.000 claims abstract description 24
- 238000003466 welding Methods 0.000 claims abstract description 7
- 230000002262 irrigation Effects 0.000 claims description 6
- 238000003973 irrigation Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 230000032798 delamination Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 6
- 239000000725 suspension Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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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
- E01D12/00—Bridges characterised by a combination of structures not covered as a whole by a single one of groups E01D2/00 - E01D11/00
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a continuous rigid frame-steel truss combined bridge for road and railway layering, which comprises an upper layer bridge deck structure, a lower layer rigid frame structure and steel truss web members, wherein the upper layer bridge deck structure is a steel-concrete combined beam or an orthotropic bridge deck; the lower layer rigid frame mainly comprises a box beam and a rigid frame pier, and the box beam is fixedly connected to the rigid frame pier; the lower ends of the steel truss web members are inserted into the box girder to realize the fixed connection of the steel truss web members and the box girder, shear keys are arranged between the steel truss web members and the box girder, and the upper ends of the steel truss web members and the upper layer bridge deck structure are fixedly connected in a gusset plate welding or bolting mode. The lower layer rigid frame structure adopts the continuous rigid frame, the whole and local rigidity of the structure is large, the stability is good, the temperature connection is small, the construction is convenient, the manufacturing cost is low, the driving comfort of a high-speed railway is favorably improved, the upper layer bridge deck structure adopts a steel-concrete composite beam or orthotropic bridge deck structure which can be flexibly adopted according to construction conditions, the construction method is flexible, and the maintenance in the later period is convenient.
Description
Technical Field
The invention belongs to the technical field of bridge engineering, and particularly relates to a continuous rigid frame-steel truss combined bridge for road and railway layering and a manufacturing method thereof.
Background
At present, the high-speed railway in China develops rapidly, more and more rivers are crossed and the bridge position resources are limited, the combined construction of the highway and the railway is sometimes more advantageous in economy, and the combined construction of the highway and the railway is increasingly adopted for bridges.
Compared with the highway-railway separately constructed bridge, the highway-railway jointly constructed bridge has remarkable technical economy and saves limited bridge position resources. The highway-railway combined bridge is generally arranged in a layered mode, and the steel trussed beam is a common beam type with the highway-railway layered arrangement. However, the double deck structures such as the combined highway and railway construction generally adopt continuous steel trussed beams, and have the following disadvantages:
(1) the continuous steel truss girder has large steel consumption and high construction cost;
(2) the continuous steel truss girder has small local rigidity and low driving comfort;
(3) if the continuous steel truss girder adopts an orthotropic bridge deck structure, the driving noise is large, and the later maintenance workload is large.
Disclosure of Invention
Aiming at the defects or improvement requirements of the prior art, the invention provides a continuous rigid frame-steel truss combined bridge for road-rail layering and a manufacturing method thereof, and the bridge is convenient to construct, high in driving comfort and convenient to maintain in the later period.
To achieve the above object, according to one aspect of the present invention, there is provided a continuous rigid frame-steel truss composite bridge for highway and railway layering, comprising an upper deck structure, a lower rigid frame structure and steel truss web members, wherein:
the upper deck structure is a steel-concrete composite beam or an orthotropic deck slab;
the lower layer rigid frame mainly comprises a box beam and a rigid frame pier, wherein the box beam is positioned above the rigid frame pier and is fixedly connected to the rigid frame pier;
the lower ends of the steel truss web members are inserted into the box girder to realize the fixed connection of the steel truss web members and the box girder, shear keys are arranged between the steel truss web members and the box girder, and the upper ends of the steel truss web members and the upper layer bridge deck structure are fixedly connected in a gusset plate welding or bolting mode.
Preferably, when the upper deck structure is a steel-concrete composite beam, the upper deck structure comprises a steel upper chord and a concrete deck slab mounted on the steel upper chord, and the upper end of the steel truss web member is fixedly connected with the steel upper chord by means of gusset plate welding or bolting.
Preferably, the steel truss web member is generally triangular, or is formed by N-shaped member elements.
Preferably, the holes of the bridge are symmetrically arranged across the bridge and the section of the lower rigid frame according to the terrain condition and the construction condition.
Preferably, the height of a plurality of said rigid frame piers is the same.
Preferably, the heights of the plurality of rigid piers are different, and the longitudinal rigidity of the rigid piers is consistent so as to improve the stress of the rigid piers.
Preferably, the box girder of the rigid frame adopts a variable cross section, and hanging baskets are adopted for symmetrically suspending irrigation.
According to another aspect of the invention, there is also provided a method for manufacturing a continuous rigid frame-steel truss composite bridge for male and female iron layering, which is characterized by comprising the following steps:
1) firstly, constructing rigid frame piers, and respectively and symmetrically suspending and filling box girders to two sides by taking the rigid frame piers as fulcrums;
2) installing one to two beam sections of the steel upper chord and the steel truss web member lagging the box girder, and installing the rest of the steel upper chord and the steel truss web member after the box girder of the lower layer rigid frame is closed;
3) and (4) installing a concrete bridge deck, and combining the concrete bridge deck and the steel upper chord to form the steel-concrete composite beam.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
1) the lower layer rigid frame structure adopts a continuous rigid frame, the whole and local rigidity of the structure is high, the stability is good, the temperature connection is small, the construction is convenient, the manufacturing cost is low, and the driving comfort of the high-speed railway is improved.
2) The upper deck structure can flexibly adopt steel-concrete composite beams or orthotropic deck structures according to construction conditions, the construction method is flexible, and maintenance in later period is convenient.
3) The upper layer structure and the lower layer structure are connected by the steel truss web members, the technology is mature, the structure is reliable, the permeability is good, and wind resistance and the landscape effect are first-class.
4) The lower layer rigid frame structure adopts hanging baskets to symmetrically suspend and irrigate; and the steel truss web members and the steel upper chords are installed between one to two sections after the suspension irrigation, and finally the upper bridge deck slab is prefabricated, assembled or poured or the steel bridge deck slab is installed, so that the construction is convenient and fast, the erection is convenient and fast, and the construction period is short.
Drawings
FIG. 1 is a schematic view of a middle and upper deck structure of the present invention being a steel-concrete composite beam;
FIG. 2 is a cross-sectional view of a middle and upper deck structure of the present invention being a steel-concrete composite beam;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 and 2, a continuous rigid frame-steel truss composite bridge for highway and railway layering comprises an upper deck structure 2, a lower rigid frame structure 1 and steel truss web members 3, wherein:
the upper layer bridge deck structure 2 is a steel-concrete composite beam or an orthotropic bridge deck;
the lower layer rigid frame mainly comprises box beams 11 and rigid frame piers 12, wherein the box beams 11 are fixedly connected to the rigid frame piers 12;
the lower ends of the steel truss web members 3 are inserted into the box girder 11 to realize the fixed connection of the steel truss web members and the box girder, shear keys 31 are arranged between the steel truss web members and the box girder 11, and the upper ends of the steel truss web members 3 are fixedly connected with the upper layer bridge deck structure 2 in a gusset plate welding or bolting mode.
Further, when the upper deck structure 2 is preferably a steel-concrete composite beam, the upper deck structure 2 includes a steel upper chord 22 and a concrete deck plate 21 mounted on the steel upper chord 22, and the upper ends of the steel truss web members 3 are fixedly connected with the steel upper chord 22 by means of gusset plate welding or bolting.
Further, the steel truss web member 3 is entirely triangular, or is formed by N-shaped member units.
Further, according to the terrain condition and the construction condition, the hole span of the bridge is arranged and the section of the lower rigid frame is symmetrically arranged.
Further, the heights of the plurality of rigid frame piers 12 are the same.
Further, the heights of the rigid frame piers 12 are different, and the longitudinal rigidity of the rigid frame piers 12 is consistent, so that the stress of the rigid frame piers 12 is improved.
Further, the box girder 11 of the rigid frame adopts a variable cross section and adopts a hanging basket for symmetrical suspension irrigation.
According to another aspect of the invention, there is also provided a method for manufacturing a continuous rigid frame-steel truss composite bridge for highway and railway layering, comprising the following steps:
1) firstly, constructing a rigid frame pier 12, and respectively and symmetrically suspending and filling box girders 11 to two sides by taking the rigid frame pier 12 as a fulcrum;
2) the steel upper chord 22 and the steel truss web members 3 are installed after one to two beam sections of the box girder 11 are lagged, and the rest steel upper chord 22 and the steel truss web members 3 are installed after the box girder 11 of the lower rigid frame is closed;
3) and installing a concrete bridge deck 21, and combining the concrete bridge deck 21 and the steel upper chord 22 to form the steel-concrete composite beam.
The combined bridge of the invention has the following advantages:
1) the lower layer structure adopts a continuous rigid frame, the whole and local rigidity of the structure is high, the stability is good, the temperature connection is small, the construction is convenient, the manufacturing cost is low, and the driving comfort of the high-speed railway is improved.
2) The upper layer structure can flexibly adopt the steel-concrete composite beam 2 or the orthotropic bridge deck structure according to the construction conditions, the construction method is flexible, and the maintenance in the later period is convenient.
3) The upper layer and the lower layer are connected by the steel truss web members 3, the technology is mature, the structure is reliable, the permeability is good, and wind resistance and the landscape effect are first-class.
4) The rigid frame part adopts a hanging basket for symmetrical hanging irrigation; and (3) installing the steel truss web members 3 and the steel upper chord 22 between two sections after the suspension irrigation, and finally prefabricating and assembling or pouring an upper bridge deck or installing a steel bridge deck. The construction is convenient, the erection is convenient and fast, and the construction period is short.
The invention is a double-deck bridge structure, the lower layer is a railway, adopts a concrete continuous rigid frame, the upper layer is a highway, can flexibly adopt a steel-concrete composite beam 2 or an orthotropic steel structure, and the lower layer and the upper layer are connected by steel truss web members 3, so that the invention has the advantages of large rigidity, good stability, convenient construction, steel consumption saving, low construction cost, small temperature connection and the like while meeting the requirements of highway and railway layered arrangement and structural stress
The invention creatively combines the continuous rigid frame and the trussed girder together to form a double-layer bridge deck structure, has the advantages of good integrity, small steel consumption, small temperature connection, strong stability, high driving comfort, convenient construction, convenient maintenance and the like, and has a new choice of good mechanical property, low engineering cost, convenient construction and convenient maintenance. With the rapid development of high-speed railways in China, more and more roads and railways are selected to be jointly built under the limitation of limited bridge resources, and the application prospect is wide.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The utility model provides a continuous rigid frame-steel purlin combination bridge for public railway layering which characterized in that includes upper deck structure, lower floor's rigid frame structure and steel purlin web member, wherein:
the upper deck structure is a steel-concrete composite beam or an orthotropic deck slab;
the lower layer rigid frame mainly comprises a box beam and a rigid frame pier, wherein the box beam is positioned above the rigid frame pier and is fixedly connected to the rigid frame pier;
the lower ends of the steel truss web members are inserted into the box girder to realize the fixed connection of the steel truss web members and the box girder, shear keys are arranged between the steel truss web members and the box girder, and the upper ends of the steel truss web members and the upper layer bridge deck structure are fixedly connected in a gusset plate welding or bolting mode.
2. The continuous rigid frame-steel truss composite bridge for highway/railway layering of claim 1, wherein when the upper deck structure is a steel-concrete composite beam, the upper deck structure comprises a steel upper chord and a concrete deck slab mounted on the steel upper chord, and the upper ends of the steel truss web members are fixedly connected with the steel upper chord by means of gusset plate welding or bolting.
3. The continuous rigid frame-steel truss composite bridge for highway/railway layering according to claim 2, wherein the steel truss web members are triangular in whole or are formed by N-shaped member elements.
4. The continuous rigid frame-steel truss composite bridge for the road-railway layering of claim 1, wherein the holes of the bridge are symmetrically arranged across the cross section of the underlying rigid frame according to the terrain conditions and construction conditions.
5. The continuous rigid frame-steel truss composite bridge for male-female delamination as claimed in claim 1, wherein the height of a plurality of said rigid frame piers is the same.
6. The continuous rigid frame-steel truss composite bridge for the road-railway layering of claim 1, wherein the heights of the rigid frame piers are different, and the longitudinal rigidity of the rigid frame piers is consistent so as to improve the stress of the rigid frame piers.
7. The continuous rigid frame-steel truss combined bridge for the road-railway layering of claim 1, wherein the box girder of the rigid frame adopts a variable cross section and adopts a hanging basket for symmetrical hanging irrigation.
8. The method for manufacturing the continuous rigid frame-steel truss combined bridge for the road-railway layering as claimed in any one of claims 2 to 7, wherein the method comprises the following steps:
1) firstly, constructing rigid frame piers, and respectively and symmetrically suspending and filling box girders to two sides by taking the rigid frame piers as fulcrums;
2) installing one to two beam sections of the steel upper chord and the steel truss web member lagging the box girder, and installing the rest of the steel upper chord and the steel truss web member after the box girder of the lower layer rigid frame is closed;
3) and (4) installing a concrete bridge deck, and combining the concrete bridge deck and the steel upper chord to form the steel-concrete composite beam. .
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010622805.5A CN111764251A (en) | 2020-07-01 | 2020-07-01 | Continuous rigid frame-steel truss combined bridge for highway-railway layering and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010622805.5A CN111764251A (en) | 2020-07-01 | 2020-07-01 | Continuous rigid frame-steel truss combined bridge for highway-railway layering and manufacturing method thereof |
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| CN111764251A true CN111764251A (en) | 2020-10-13 |
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| CN202010622805.5A Pending CN111764251A (en) | 2020-07-01 | 2020-07-01 | Continuous rigid frame-steel truss combined bridge for highway-railway layering and manufacturing method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003119718A (en) * | 2001-10-09 | 2003-04-23 | Haltec:Kk | Bridge |
| JP2003313815A (en) * | 2002-04-19 | 2003-11-06 | Nippon Steel Corp | Rigid connecting structure between steel girder and steel pipe pier |
| CN103437274A (en) * | 2013-09-09 | 2013-12-11 | 中铁第一勘察设计院集团有限公司 | Bridge structure with combination of stiffening steel truss and concrete beam |
| CN103485272A (en) * | 2013-10-11 | 2014-01-01 | 中铁第一勘察设计院集团有限公司 | Continuous rigid frame-steel truss combined bridge structure |
| CN110359355A (en) * | 2019-07-31 | 2019-10-22 | 中铁二院工程集团有限责任公司 | Combine beam section in the case of rail-road mixed-arrangement-purlin |
| CN212452237U (en) * | 2020-07-01 | 2021-02-02 | 中铁第四勘察设计院集团有限公司 | Continuous rigid frame-steel truss combined bridge for highway-railway layering |
-
2020
- 2020-07-01 CN CN202010622805.5A patent/CN111764251A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003119718A (en) * | 2001-10-09 | 2003-04-23 | Haltec:Kk | Bridge |
| JP2003313815A (en) * | 2002-04-19 | 2003-11-06 | Nippon Steel Corp | Rigid connecting structure between steel girder and steel pipe pier |
| CN103437274A (en) * | 2013-09-09 | 2013-12-11 | 中铁第一勘察设计院集团有限公司 | Bridge structure with combination of stiffening steel truss and concrete beam |
| CN103485272A (en) * | 2013-10-11 | 2014-01-01 | 中铁第一勘察设计院集团有限公司 | Continuous rigid frame-steel truss combined bridge structure |
| CN110359355A (en) * | 2019-07-31 | 2019-10-22 | 中铁二院工程集团有限责任公司 | Combine beam section in the case of rail-road mixed-arrangement-purlin |
| CN212452237U (en) * | 2020-07-01 | 2021-02-02 | 中铁第四勘察设计院集团有限公司 | Continuous rigid frame-steel truss combined bridge for highway-railway layering |
Non-Patent Citations (1)
| Title |
|---|
| 曾满良;王甜;孙秀贵;张晋瑞;: "杭瑞高速公路洞庭湖大桥主桥设计及关键技术研究", 铁道建筑, no. 02, 20 February 2020 (2020-02-20) * |
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