CN105755945A - Y-shaped triangular steel truss beam bridge - Google Patents
Y-shaped triangular steel truss beam bridge Download PDFInfo
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- CN105755945A CN105755945A CN201610210386.8A CN201610210386A CN105755945A CN 105755945 A CN105755945 A CN 105755945A CN 201610210386 A CN201610210386 A CN 201610210386A CN 105755945 A CN105755945 A CN 105755945A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 35
- 239000010959 steel Substances 0.000 title claims abstract description 35
- 238000012986 modification Methods 0.000 abstract description 3
- 230000004048 modification Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 238000009432 framing Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
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
- E01D6/00—Truss-type bridges
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- Engineering & Computer Science (AREA)
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- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
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Abstract
本发明公开了一种适用于跨度200m以下的Y形分肢的三角形钢桁梁桥，包括一个桁架一以及两个桁架二，桁架一的一端和两个桁架二交汇于一点后构成的桥梁主梁，桁架一和两个桁架二的交汇点为桥梁主梁的桁高最高处，桥梁主梁在空间上整体呈一个三角架，桥梁主梁平面呈Y字形，两个桁架二拼接成Y字形的桥梁主梁中呈V形的主桁架分肢部分，这种桥型整体为一个三脚架造型，平面造型呈Y字形分肢，立面造型呈三角形的钢桁梁改型；这种桥型在保证较大跨越能力的前提下，桥面以下厚度小，整体刚度大，抗风抗震性能好，同时其造型新颖美观可以作为城市地标建筑。
The invention discloses a triangular steel truss bridge suitable for Y-shaped split limbs with a span of less than 200m. The intersection point of beam, truss 1 and two truss 2 is the highest truss height of the main beam of the bridge. The main beam of the bridge is a tripod as a whole in space. The plane of the main beam of the bridge is Y-shaped, and the two trusses 2 are joined to form a Y The V-shaped main truss limbs in the main girder of the bridge, this bridge shape is a tripod shape as a whole, the plane shape is Y-shaped limbs, and the facade shape is a triangular steel truss modification; this bridge shape is in the Under the premise of ensuring a large spanning capacity, the thickness below the bridge deck is small, the overall rigidity is large, and the wind and earthquake resistance performance is good. At the same time, its novel and beautiful shape can be used as a city landmark building.
Description
Technical field
The present invention relates to the Half-through Steel Truss of bridge bridge alternatives design field, particularly a kind of Y shape suitable in below span 200m divides the triangle steel truss bridge of limb.
Background technology
Conventional steel truss bridge is widely used in highway, railroad bridge construction, is the bridge structure that a kind of span ability is very strong.Since over half a century, China has built a large amount of steel truss girder bridge, and this bridge type occupies critical role in bridge steel structure.Under the premise of Urban Bridge Construction now, the aesthetic feeling of building is obviously extremely important；Greatly across truss bridge owing to its version is excessively classical, single, it tends to be difficult to the requirement to Bridges.Simultaneously for crossing T-shaped in city, upper island road, the limited specific construction condition such as grade of earth clearance, conventional steel truss bridge is difficult to be applicable to these situations, generally requires the polymorphic structure adopting fork.Based on classical steel truss girder bridge, it is proposed that a kind of suitable in below span 200m, planar design is the Half-through Steel Truss that Y-shaped divides limb, Facade form triangular in shape, i.e. a kind of steel truss girder remodeling；The solution of a kind of better bridge type is provided for the Urban Bridge Construction in above-mentioned situation.
Summary of the invention
The purpose of the present invention, is in that the triangle steel truss bridge providing a kind of Y shape suitable in below span 200m to divide limb, and its planar design is that Y-shaped divides limb, and Facade form is triangular in shape.
This invention address that the solution of its technical problem is: a kind of Y shape divides the triangle steel truss bridge of limb, it is spliced to form truss one and two that cross section is triangle or open trapezoid respectively by purlin sheet two by two panels purlin sheet one by the peaceful connection of indulging of crossbeam including one, crossbeam, form, after flat vertical connection and the splicing of limit longeron, the truss two that cross section is L-shaped, the bridge main beam that one end of described truss one and two truss two are constituted after crossing, the purlin height highest point that summit is bridge main beam of the intersection of truss one and two described truss two, described bridge main beam is spatially overall in a tripod, bridge main beam plane is Y-shaped, two described truss two are spliced in the bridge main beam of Y-shaped V-shaped main couple and divide limb part.
nullFurther improvement as technique scheme，Described purlin sheet one includes purlin sheet one top boom and purlin sheet one lower boom，Purlin sheet one montant and purlin sheet one brace it is provided with between described purlin sheet one top boom and purlin sheet one lower boom，The vertical connection of crossbeam peace in described truss one is between sheet one lower boom of two panels purlin，Described purlin sheet two includes purlin sheet two top boom and purlin sheet two lower boom，Purlin sheet two montant and purlin sheet two brace it is provided with between described purlin sheet two top boom and purlin sheet two lower boom，The vertical connection of crossbeam peace in described truss two is between limit longeron and purlin sheet two lower boom，Lay respectively at the V-shaped inner space being distributed between two panels truss two of the limit longeron in two panels truss two，The upper surface of described crossbeam is equipped with bridge floor，The sheet one lower boom docking of sheet two lower boom purlin adjacent thereto, described purlin，The sheet one top boom docking of sheet two top boom purlin adjacent thereto, described purlin.
Further improvement as technique scheme, be arranged in the crossbeam of described truss one coplanar with purlin sheet one montant in two panels purlin sheet one respectively after truss one steelframe of triangle or open trapezoid, described truss one steelframe connects and composes truss one by purlin sheet one top boom, purlin sheet one lower boom and middle longeron；Being arranged in crossbeam and the coplanar rear composition L-shaped steelframe of purlin sheet two montant of same described truss two, described L-shaped steelframe connects and composes truss two by purlin sheet two top boom, purlin sheet two lower boom and limit longeron.
As the further improvement of technique scheme, it is positioned at described truss one and is connected by connecting rod between truss with the top of the two panels purlin sheet one of the intersection of truss two.
As the further improvement of technique scheme, the plane included angle between the longeron of limit in truss two described in two panels is 50 ~ 70 °, and the plane included angle between described truss one lower boom and its adjacent truss two lower boom is 150 ~ 160 °.
Further improvement as technique scheme, the cross section of described purlin sheet one lower boom, purlin sheet one top boom, purlin sheet two lower boom and purlin sheet two top boom is parallelogram, and the cross section of described crossbeam, purlin sheet one montant, purlin sheet one brace, purlin sheet two montant and purlin sheet two brace is box section or H-shaped cross section.
As the further improvement of technique scheme, the lower surface of described truss one and two panels truss two is separately installed with substructure.
The invention has the beneficial effects as follows:
(1) under the premise ensureing relatively Great span ability, the following structural thickness of bridge type bridge floor in the present invention (road surface to the thickness at the bottom of beam) is less；It is spatially simultaneously in Bifurcation Structure, for there being headroom to limit, and the special city construction condition such as the upper island road of right-in and right-out, T-shaped intersection, the bridge type of this motion has superiority relative to other types beam bridge.
(2) bridge main beam adopts the structure of tripod type, and structure integral rigidity is big, and wind resistance anti-seismic performance is good.When particularly this bridge type is for People's Bank of China's bridge, it is possible to be prevented effectively from the big problem across overpass insufficient rigidity.
(3) this motion bridge-type structure novel form, handsome in appearance, it is possible to is conducive to promoting city image as landmark-type building.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in the embodiment of the present invention, below the accompanying drawing used required during embodiment is described is briefly described.Obviously, described accompanying drawing is a part of embodiment of the present invention, rather than whole embodiment, and those skilled in the art is under the premise not paying creative work, it is also possible to obtain other designs and accompanying drawing according to these accompanying drawings.
Fig. 1 is the side view of the present invention；
Fig. 2 is the top view of the present invention；
Fig. 3 be A-A to sectional view；
Fig. 4 be B-B to sectional view；
Fig. 5 is the graphics of the present invention；
Fig. 6 is the elevation of purlin sheet one；
Fig. 7 is the elevation of purlin sheet two.
Detailed description of the invention
Below with reference to embodiment and accompanying drawing, the technique effect of the design of the present invention, concrete structure and generation is clearly and completely described, to be completely understood by the purpose of the present invention, feature and effect.Obviously; described embodiment is a part of embodiment of the present invention, rather than whole embodiment, based on embodiments of the invention; other embodiments that those skilled in the art obtains under the premise not paying creative work, belong to the scope of protection of the invention.It addition, all connection/annexations being previously mentioned in literary composition, not singly refer to that component directly connects, and refer to and according to being embodied as situation, by adding or reduce connection auxiliary, more excellent draw bail can be formed.
With reference to Fig. 1～Fig. 7, a kind of Y shape divides the triangle steel truss bridge of limb, it is spliced to form truss 1 and two that cross section is triangle or open trapezoid respectively by purlin sheet 2 24 by two panels purlin sheet 1 by the vertical connection 4 of crossbeam 8 peace including one, crossbeam 8, form, after flat vertical connection 4 and limit longeron 5 splicing, the truss 22 that cross section is L-shaped, the bridge main beam that one end of described truss 1 and two panels truss 22 are constituted after crossing, the summit of the intersection of truss 22 described in truss 1 and two panels is the purlin height highest point of bridge main beam, described bridge main beam is spatially overall in a tripod, bridge main beam plane is Y-shaped, truss 22 described in two panels is spliced in the bridge main beam of Y-shaped V-shaped main couple and divides limb part.
nullIt is further used as preferred embodiment，Described purlin sheet 1 includes purlin sheet one top boom 10 and purlin sheet one lower boom 13，Purlin sheet one montant 12 and purlin sheet one brace 11 it is provided with between described purlin sheet one top boom 10 and purlin sheet one lower boom 13，The vertical connection 4 of crossbeam 8 peace in described truss 1 is between two panels purlin sheet one lower boom 13，Described purlin sheet 2 24 includes purlin sheet two top boom 20 and purlin sheet two lower boom 23，Purlin sheet two montant 22 and purlin sheet two brace 21 it is provided with between described purlin sheet two top boom 20 and purlin sheet two lower boom 23，The vertical connection 4 of crossbeam 8 peace in described truss 22 is between limit longeron 5 and purlin sheet two lower boom 23，Lay respectively at the V-shaped inner space being distributed between two panels truss 22 of the limit longeron 5 in two panels truss 22，The upper surface of described crossbeam 8 is equipped with bridge floor 7，Sheet two lower boom 23 purlin adjacent thereto, described purlin sheet one lower boom 13 docks，Sheet two top boom 20 purlin adjacent thereto, described purlin sheet one top boom 10 docks.
It is further used as preferred embodiment, be arranged in the crossbeam 8 of described truss 1 coplanar with purlin sheet one montant 12 in two panels purlin sheet 1 respectively after truss one steelframe of triangle or open trapezoid, described truss one steelframe connects and composes truss 1 by purlin sheet one top boom 10, purlin sheet one lower boom 13 and middle longeron 6；Being arranged in crossbeam 8 and the coplanar rear composition L-shaped steelframe of purlin sheet two montant 24 of same described truss 22, described L-shaped steelframe connects and composes truss 22 by purlin sheet two top boom 20, purlin sheet two lower boom 23 and limit longeron 5.
It is further used as preferred embodiment, being positioned at the cross section triangularity that truss 1 after described truss 1 is connected by connecting rod between truss becomes in the intersection of truss 1 with truss 22 with the top of the two panels purlin sheet 1 of the intersection of truss 22, in truss 1, the cross section of all the other positions is the triangular section that upper end is uncovered.
In transverse section, sheet 1 introversion of two panels purlin, see accompanying drawing 4, triangle or open trapezoid section；Bridge floor 7 is supported on crossbeam 8, and crossbeam 8 is connected with purlin sheet one lower boom 13, and the force path of this section of load is: sheet one lower boom 13 → purlin, bridge floor 7 → crossbeam 8 → purlin sheet one 14 → substructure.Girder divides limb section (see accompanying drawing 3), and crossbeam 8 semi-cantilever is connected on purlin sheet 2 24, constitutes a L-shaped section.This section of crossbeam 8 is coplanar with purlin sheet two montant 22, constitutes a series of L-shaped steelframe not of uniform size, and these steelframes are then coupled together by purlin sheet two lower boom 23 and limit longeron 5, collectively form main couple V-shaped in the bridge main beam of Y-shaped and divide limb part.The force path of this section of load is: bridge floor 7 → crossbeam 8 → purlin sheet two lower boom 23 and longeron 5 → purlin, limit sheet 2 24 → substructure.
Being further used as preferred embodiment, the plane included angle between limit longeron 5 in truss 22 described in two panels is 50 ~ 70 °, it is preferable that the plane included angle between limit longeron 5 in two panels truss 22 is 60 °；Plane included angle between described truss 1 lower boom and its adjacent truss 22 lower boom is 150 ~ 160 °, it is preferable that the plane included angle between truss 1 lower boom and its adjacent truss 22 lower boom is 153 °.
It is further used as preferred embodiment, the cross section of described purlin sheet one lower boom 13, purlin sheet one top boom 10, purlin sheet two lower boom 23 and purlin sheet two top boom 20 is parallelogram, and the cross section of described crossbeam 8, purlin sheet one montant 12, purlin sheet one brace 11, purlin sheet two montant 22 and purlin sheet two brace 21 is box section or H-shaped cross section.
Bridge-type structure system in the present invention can adopt one across freely-supported trusses or two kinds of basic structure systems of two Span Continuous trusses.In addition when arranging the structural system that middle pier adopts two Span Continuous, purlin sheet one brace 11 and purlin sheet two brace 21 are pull bar, and then stayed structure can be made, and optimize Internal Force of Truss distribution by adjusting Suo Li, whole bridge becomes truss-drag-line combined system further.These structural systems each all have pluses and minuses, generally consider the many factors such as construction costs, structure stress, under-clearance during specific design, and Integrated comparative is to determine optimum structure system.This motion trusses bar cross section type can take various forms.Except considering good looking appearance, chord member is proposed with outside parallelogram section, and other components can adopt the cross section of box, H type or other forms.Main beam member connected mode can adopt all welded type, it would however also be possible to employ high-strength bolt connects.Bridge floor 7 structure can adopt the version of separate type Orthotropic Steel Bridge Deck, plate girder formula Orthotropic Steel Bridge Deck, steel-concrete composite beams.During Specific construction, according to conditions such as site traffic transports, the multiple construction method constructions such as full framing, pushing tow, cantilever lifting can be adopted.Diversified selection is provided for Bridge Design, workmen.
Being further used as preferred embodiment, the lower surface of described truss 1 and two panels truss 22 is separately installed with substructure 3.
The following is a currently preferred embodiment:
This bridge is the bridge of the Zhong Shang island road in a city, and its major function is to connect certain Binjiang Road and certain island.This bridge bridge type is the half through triangle steel truss simply supported girder bridge that Y shape divides limb, in side, city, fork is two limbs, span is 155m, high 0 ~ the 18m in purlin, whole bridge plane is " Y-shaped ", bridge floor 7 adopts orthotropic plate to lay bridge floor 7, and design bridge floor 7 width is Ce Liang tracks, 7.8 ~ 15.6m(island), 2 bicycle roads of side, 4.4m(city).Main truss adopts " N-type " truss, and the purlin sheet that truss is uprised by 4 trianglees forms, wherein two panels purlin sheet 1 and two panels purlin sheet 2 24, and truss panel length is 8.88m.Main couple divides the angle of two points of limbs in limb part to be 60 °, and main couple divides the angle of cut that limb part and main couple do not divide limb part lower boom to be 153 °.Triangular truss summit is golden section proportion 1:0.618 to two fulcrum span ratios.
Purlin sheet one top boom 10, purlin sheet two top boom 20, purlin sheet one lower boom 13, purlin sheet two lower boom 23, purlin sheet one montant 12, purlin sheet two montant 22, purlin sheet one brace 11, purlin sheet two brace 21 and limit longeron 5 component adopt box section；Flat vertical connection 4, middle longeron 6 and crossbeam 8 adopt H type section.Chord member adopts Q500qENH steel, and rod member height 1910mm, the wide 1207mm of purlin sheet one top boom 10 and purlin sheet two top boom 20, for box beam parallelogram section；Cross section brace angle is consistent with purlin sheet introversion angle, is 68.3 °, thickness of slab 36 ~ 54mm.Rod member height 2047mm, the wide 1225mm of purlin sheet one lower boom 13 and purlin sheet two lower boom 23, for box beam parallelogram section；Chord member thickness of slab 28 ~ 50mm.Bridge adopts monoblock type entirely to weld node, and namely every section of upper and lower chord member is a prefabricated node, purlin sheet one lower boom 13 and the every segment length 8875mm of purlin sheet two lower boom 23, the every segment length 8892mm of purlin sheet one top boom 10, the every segment length 8912mm of purlin sheet two top boom 20.Purlin sheet one montant 12 and purlin sheet two montant 22 adopt Q420qE steel, box section, high 1138mm, wide 666mm, thickness of slab 18mm, montant length 3590mm ~ 16966mm.Purlin sheet one brace 11 and purlin sheet two brace 21 adopt Q420qE steel, box section, high 1138mm, wide 450mm, thickness of slab 18mm, brace length 10350mm ~ 19959mm.Limit longeron 59 adopts Q420qE steel, box section, high 1599 ~ 1687mm, wide 888mm, thickness of slab 16 ~ 24mm, designs by flexural member, every segmental length 8891mm.The pressurized plate of all box-type section rod members is respectively provided with and the ribbed stiffener of motherboard uniform thickness.Being provided with limit longeron 5 between crossbeam 8 in truss 1, its section is H type section, deck-molding 1471mm, edge of a wing width 600mm, thick 32mm.Crossbeam 8 is H type section, and deck-molding 1299 ~ 1617mm is changed by deck-molding and arranges horizontal wall inscription, edge of a wing width 800mm, thick 32mm.Longeron 6 and purlin sheet two lower boom 23 node in the connection of flat vertical connection 4, adopt N row to arrange.Flat vertical connection 4 cross sections are high 500mm, edge of a wing width 650mm, the H type cross section of thick 28mm.Flat vertical connection 4, middle longeron 6 and crossbeam 8 all adopt Q370qE steel.Bridge floor 7 adopts orthotropic plate bridge deck, adopts U-shaped ribbed stiffener, Q370qE steel, floorings thickness 16mm.Deck paving is 5.5cm bituminous epoxy concrete.
Bridge pier is the board-like pier of thin-walled, adopts rectangular cross section.Single row pillars basis, adopts and bores (punching) hole pouring pile, and stake footpath is 1.2m.Cushion cap is four pile framings and eight pile framings.Different according to stake footpath, the thickness of cushion cap is different therewith, and stake footpath is the thickness of 120cm cushion cap is 1.6m, and stake footpath is the thickness of 180cm cushion cap is 2.4m.Pile foundation adopts cast-in-situ bored pile or Punching Borehole Cast-in-place Concrete Pile, and diameter has 120 and 180cm two kinds, and bearing capacity of single pile is 4500kN, 11000kN respectively.Average stake is about 40m.
It is embodied as step as follows:
(1) substructure 3 that inserted to play steel pile casting erection construction platform completes girder is adopted to construct.
(2) truss prefabrication part-structure is transported to on-the-spot interim platform for lining, carries out the Site Welding of prefabricated section.
(3) bridge floor erection crane walking passageway, bridge steel structure is installed from side to opposite side order with crane walking, sets up temporary support in river course simultaneously, and temporary support synchronizes erection along with bridge steel structure installation progress.
(4) complete main couple to install, Site Welding Orthotropic Steel Bridge Deck.
(5) lay deck paving, affiliated facility is installed.
It is above the better embodiment of the present invention has been illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent modifications or replacement under the premise without prejudice to spirit of the present invention, and these equivalent modification or replacement are all contained in the application claim limited range.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610210386.8A CN105755945B (en) | 2016-04-06 | 2016-04-06 | A kind of triangle steel truss bridge of Y shape point limb |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610210386.8A CN105755945B (en) | 2016-04-06 | 2016-04-06 | A kind of triangle steel truss bridge of Y shape point limb |
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| CN105755945A true CN105755945A (en) | 2016-07-13 |
| CN105755945B CN105755945B (en) | 2017-06-13 |
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| CN106988224A (en) * | 2017-05-17 | 2017-07-28 | 广州市市政工程机械施工有限公司 | The arch rib installation system and installation method of bridge |
| CN110184890A (en) * | 2019-06-28 | 2019-08-30 | 同济大学建筑设计研究院(集团)有限公司 | A kind of bridge span structure |
| CN112431111A (en) * | 2020-11-25 | 2021-03-02 | 广州市市政工程设计研究总院有限公司 | Plate and truss combined system landscape bridge and construction method thereof |
| CN113481825A (en) * | 2021-07-21 | 2021-10-08 | 上海市政工程设计研究总院（集团）有限公司 | Large-span bridge structure of Y-shaped girder |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113481825B (en) * | 2021-07-21 | 2023-02-28 | 上海市政工程设计研究总院（集团）有限公司 | Large-span bridge structure of Y-shaped girder |
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| Publication number | Publication date |
|---|---|
| CN105755945B (en) | 2017-06-13 |
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