CN104452568A - Steel plate girder pedestrian overbridge - Google Patents
Steel plate girder pedestrian overbridge Download PDFInfo
- Publication number
- CN104452568A CN104452568A CN201410706595.2A CN201410706595A CN104452568A CN 104452568 A CN104452568 A CN 104452568A CN 201410706595 A CN201410706595 A CN 201410706595A CN 104452568 A CN104452568 A CN 104452568A
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- Prior art keywords
- bridge
- plate girder
- iron
- steel
- girder
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/02—Bridges characterised by the cross-section of their bearing spanning structure of the I-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
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/103—Parapets, railings ; Guard barriers or road-bridges
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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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a steel plate girder pedestrian overbridge. The steel plate girder pedestrian overbridge comprises a bridge and ladder ways arranged at the two ends of the bridge; the bridge is of a through type structure of open type longitudinal and cross beams formed by splicing and welding I-shaped steel; the longitudinal and cross beams are fixedly connected to form a main ladder-shaped beam; two I-shaped steel beams formed by welding steel boards are adopted as stress longitudinal beams; the two longitudinal beams are connected through multiple small I-shaped steel cross beams; a profiled steel sheet concrete combined bridge panel is laid on the cross beams and used for transmitting live loads of bridge surface crowds. The steel plate girder pedestrian overbridge has the advantages of being simple in structure, reasonable in stress, easy to build, comfortable to use, small in work amount, low in manufacturing cost, economical, convenient to maintain, attractive in modeling and the like.
Description
Technical field
The present invention relates to a kind of pedestrian overcrossing, particularly a kind of take plate girder as the plate girder pedestrian overcrossing of girder.
Background technology
City overhead pedestrian crossing construction amount is huge, requires that its form of structure is simple, quick construction, view are good, cost economic.Steel box girder, because its rigidity is large, construction technology is ripe, is present stage the most frequently used overline bridge main beam structure.And have " national building standard design atlas. urban road---pedestrian overcrossing " adopt for design and construction.Steel box-girder relies on the closed box-type section with certain depth of section to support its deadweight and pedestrian load, belongs to deck type structure.Large-span Steel Box Beam overline bridge, depth of section is higher, and under the Qiao Xia garage Clearance requirement of satisfied regulation, floor elevation distance ground is higher, and pedestrian's higher and longer ladder access that need climb realized street.The comfortableness used is poor, and its applicability reduces.The engineering quantity of steel girder and ladder access beam is comparatively large, and economy is poor; Steel box-girder is closed cross-section, and in case, space is little, and steel work processing is inconvenient, and the section form simultaneously closed is made troubles to late maintaining and maintenance, and its steel work durability should not ensure.Because its section form is single, deck-molding is higher again, and its view is also general.
Therefore, need a kind of novel pedestrian overcrossing, can have floor elevation low, ladder access length is short, and structure stress is reasonable, and material usage is economized, and section form is simple, making and installation, maintenance feature easily.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of plate girder pedestrian overcrossing, have floor elevation low, ladder access length is short, and structure stress is reasonable, and material usage is economized, and section form is simple, making and installation, maintenance feature easily.
Plate girder pedestrian overcrossing of the present invention, comprises bridge and is arranged at the ladder access at bridge two ends, and described bridge is by the assembled lower support type structure being welded into open type beam in length and breadth of i shaped steel; Described longitudinal and cross beam is fixedly connected to form ladder shape girder.
Further, described bridge comprises the longeron i iron I of vertical symmetry setting and is connected and fixed on wing plate, web the crossbeam i iron II that longeron i iron I bottom is formed crossbeam;
Further, described crossbeam lays profiled sheet concrete combined bridge deck;
Further, described i iron I is variable cross-section i shaped steel;
Further, the longeron i iron I of corresponding crossbeam is provided with the stiffener for web;
Further, the upper flange of described longeron i iron I arranges accommodation rail.
Beneficial effect of the present invention: plate girder pedestrian overcrossing of the present invention, two panels is adopted to be stressed longeron by the i-shape steel beam of Plate Welding, connected by multiple little I-shaped gooseneck between two panels longeron, crossbeam upper berth profiled sheet concrete combined bridge deck, transmit bridge floor crowd mobile load; Have simple for structure, reasonable stress, construction simple, use the advantages such as comfortable, engineering quantity is little, cost economic, maintenance are convenient, handsome in appearance.With 24m span for standard, with " national building standard designs atlas. urban road---pedestrian overcrossing " in steel box-girder compare, there is following advantage:
(1) structure stress is reasonable, and material usage is economized.I iron girder facade and the simply supported beam bending moment diagram of And of Varying Depth match, mid span moment maximum, and depth of section is the highest, maximized performance cross section and material property.24m is 25.06t across plate girder scheme steel using amount, and steel box-girder scheme steel using amount is 29.88t, can saving steel 4.82t.
(2) floor elevation is low, and ladder access length is short.Under same under-clearance requires, reduce floor elevation 0.6m than steel box-girder scheme.The ladder access of gradient 1:2 can reduce length 1.2m, and length 7.2m can be reduced in the ramp of gradient 1:12.While ladder access and gradient engineering quantity reduce, improve comfortableness and the efficiency of pedestrian crossing.In the intensive location of underground utilities, ladder access floor space reduces, and also reduces the engineering quantity that underground utilities are removed.
(3) section form is simple, and making and installation, maintenance are convenient.Plate girder becomes simple i shaped cross section by Plate Welding, then is assembled into the girder construction in length and breadth opened wide.Welding job amount is little, working space large, it is simple and convenient to make.Due to lighter in weight, in-site installation is also more convenient.The section form opened wide, maintenance and the maintenance of girder steel are more convenient, and its durability can ensure.
(4) structural facades modern design, building height is low.Half moon-shaped girder is the combination of power and beauty, and girder simultaneously as guardrail, can form the real and empty facade combined with succinct railing of stainless steel tubes.The various primary structure member of structure all exposes, and also mitigates the thick and heavy sense of structure while embodying component U.S..
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is plate girder pedestrian overcrossing span centre section structure schematic diagram of the present invention;
Fig. 2 is plate girder pedestrian overcrossing facade structures schematic diagram of the present invention.
Detailed description of the invention
Fig. 1 is plate girder pedestrian overcrossing span centre section structure schematic diagram of the present invention; Fig. 2 is plate girder pedestrian overcrossing facade structures schematic diagram of the present invention, as shown in the figure: plate girder pedestrian overcrossing of the present invention, comprise the ladder access that bridge is arranged at bridge two ends, described bridge is by the assembled lower support type structure being welded into open type beam in length and breadth of i shaped steel; Described longitudinal and cross beam forms ladder shape girder in the mode be fixedly connected with; Adopt two panels to be stressed longeron by the i-shape steel beam of Plate Welding, connected by multiple little I-shaped gooseneck between two panels longeron.
The present embodiment, described girder comprises the longeron i iron I 1 of vertical symmetry setting and is connected and fixed on wing plate, web 14 the crossbeam i iron II 2 that longeron i iron I 1 bottom is formed crossbeam; Longeron i iron I 1 is carrying main beam.The upper flange of crossbeam i iron II 2 is connected with profiled sheet concrete combined bridge deck 4, transmits bridge floor load to longeron i iron I 1.
In the present embodiment, described crossbeam is laid profiled sheet concrete combined bridge deck 4; Structural strength is high, durable in use.
In the present embodiment, described i iron I 1 is variable cross-section i shaped steel; Plate girder becomes simple i shaped cross section by Plate Welding, then is assembled into the girder construction in length and breadth opened wide.Welding job amount is little, working space large, it is simple and convenient to make.Due to lighter in weight, in-site installation is also more convenient.The section form opened wide, maintenance and the maintenance of girder steel are more convenient, and its durability can ensure.
In the present embodiment, described girder longeron i iron I 1 is provided with the stiffener 12 for web 14 in each crossbeam position; The upper flange 13 of described girder i iron I 1 arranges accommodation rail 3; Structural facades modern design, building height is low.Half moon-shaped girder is the combination of power and beauty, and girder simultaneously as guardrail, can form the real and empty facade combined with succinct railing of stainless steel tubes handrail.The various primary structure member of structure all exposes, and also mitigates the thick and heavy sense of structure while embodying component U.S..
In the present embodiment, described girder i iron I 1 is And of Varying Depth i iron.I-shaped steel longitudinal beam facade and the simply supported beam bending moment diagram of And of Varying Depth match, mid span moment maximum, and depth of section is the highest, maximized performance cross section and material property.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (6)
1. a plate girder pedestrian overcrossing, is characterized in that: comprise bridge and be arranged at the ladder access at bridge two ends, and described bridge is by the assembled lower support type structure being welded into open type beam in length and breadth of i shaped steel; Described longitudinal and cross beam is fixedly connected to form ladder shape girder.
2. plate girder pedestrian overcrossing according to claim 1, is characterized in that: described bridge comprises the longeron i iron I of vertical symmetry setting and is connected and fixed on wing plate, web the crossbeam i iron II that longeron i iron I bottom is formed crossbeam.
3. plate girder pedestrian overcrossing according to claim 2, is characterized in that: described crossbeam is laid profiled sheet concrete combined bridge deck.
4. plate girder pedestrian overcrossing according to claim 3, is characterized in that: described i iron I is variable cross-section i shaped steel.
5. plate girder pedestrian overcrossing according to claim 4, is characterized in that: the longeron i iron I of corresponding crossbeam is provided with the stiffener for web.
6. plate girder pedestrian overcrossing according to claim 5, is characterized in that: the upper flange of described longeron i iron I arranges accommodation rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410706595.2A CN104452568A (en) | 2014-11-28 | 2014-11-28 | Steel plate girder pedestrian overbridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410706595.2A CN104452568A (en) | 2014-11-28 | 2014-11-28 | Steel plate girder pedestrian overbridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104452568A true CN104452568A (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410706595.2A Pending CN104452568A (en) | 2014-11-28 | 2014-11-28 | Steel plate girder pedestrian overbridge |
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| CN (1) | CN104452568A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714670A (en) * | 2016-04-19 | 2016-06-29 | 林同棪国际工程咨询（中国）有限公司 | Single-piece joist type annular passenger overcrossing |
| CN106284044A (en) * | 2016-08-29 | 2017-01-04 | 武汉理工大学 | A kind of Novel steel concrete composite bridge and construction method thereof |
| CN108193591A (en) * | 2017-12-30 | 2018-06-22 | 贵阳铝镁设计研究院有限公司 | A kind of aluminum alloy pedestrian bridge steel bridge pier on the anti-edge of extended position band |
| CN108360363A (en) * | 2018-03-10 | 2018-08-03 | 杭州桥非桥工程咨询有限公司 | Steel braced girder composite structure |
| CN110582609A (en) * | 2018-04-11 | 2019-12-17 | 潘迪 维拉萨米·塔瓦马尼 | Construction system and method for combined U-shaped reinforcing beam bridge floor |
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| CN2878478Y (en) * | 2005-10-26 | 2007-03-14 | 同济大学 | Fabricated grooved beam for rear extending pre-stress segment pre-formation |
| CN101200874A (en) * | 2007-12-19 | 2008-06-18 | 中铁二局股份有限公司 | Box-beam steel bar centralized tying and integral hoisting construction method |
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2014
- 2014-11-28 CN CN201410706595.2A patent/CN104452568A/en active Pending
Patent Citations (8)
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| CN2878478Y (en) * | 2005-10-26 | 2007-03-14 | 同济大学 | Fabricated grooved beam for rear extending pre-stress segment pre-formation |
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| CN101200874A (en) * | 2007-12-19 | 2008-06-18 | 中铁二局股份有限公司 | Box-beam steel bar centralized tying and integral hoisting construction method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714670A (en) * | 2016-04-19 | 2016-06-29 | 林同棪国际工程咨询（中国）有限公司 | Single-piece joist type annular passenger overcrossing |
| CN105714670B (en) * | 2016-04-19 | 2017-04-05 | 林同棪国际工程咨询（中国）有限公司 | Monolithic purlin formula Annular Pedestrian Overpass |
| CN106284044A (en) * | 2016-08-29 | 2017-01-04 | 武汉理工大学 | A kind of Novel steel concrete composite bridge and construction method thereof |
| CN108193591A (en) * | 2017-12-30 | 2018-06-22 | 贵阳铝镁设计研究院有限公司 | A kind of aluminum alloy pedestrian bridge steel bridge pier on the anti-edge of extended position band |
| CN108360363A (en) * | 2018-03-10 | 2018-08-03 | 杭州桥非桥工程咨询有限公司 | Steel braced girder composite structure |
| CN110582609A (en) * | 2018-04-11 | 2019-12-17 | 潘迪 维拉萨米·塔瓦马尼 | Construction system and method for combined U-shaped reinforcing beam bridge floor |
| CN110582609B (en) * | 2018-04-11 | 2021-04-27 | 潘迪 维拉萨米·塔瓦马尼 | Construction system and method for combined U-shaped reinforcing beam bridge floor |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |
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| RJ01 | Rejection of invention patent application after publication |