CN103993554B - Cable passage steel bridge is linked with outside lower support type English truss - Google Patents

Cable passage steel bridge is linked with outside lower support type English truss Download PDF

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Publication number
CN103993554B
CN103993554B CN201410130085.5A CN201410130085A CN103993554B CN 103993554 B CN103993554 B CN 103993554B CN 201410130085 A CN201410130085 A CN 201410130085A CN 103993554 B CN103993554 B CN 103993554B
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chord
cable passage
outside
linked
support type
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CN103993554A (en
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刘松
刘声树
田仲
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CCCC Second Harbor Consultants Co Ltd
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CCCC Second Harbor Consultants Co Ltd
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Abstract

The invention provides outside a kind of lower support type English truss and be linked with cable passage steel bridge.Comprise three chord members be parallel to each other, three strings pole-footing is divided into two lower chords and a upper chord according to locus, between every two parallel chord members, the strut supported is carried out in welding, strut between every two parallel chord members joins end to end, form the supporting surface of multiple triangular structure, three supporting surfaces are combined into firm triangular truss space-load system; The band cable passage extended along lower chord direction is hung with outside the outside of in described lower chord; Described upper chord, in the vertical orthography in bottom support face, is in eccentric position, and near being linked with cable passage side outward.The present invention is safe and reliable, easy to use, cheap, succinctly attractive in appearance, construct convenient, there is better corrosion resistance and application life, and can for convenience detachly change.

Description

Cable passage steel bridge is linked with outside lower support type English truss
Technical field
The present invention relates to steel structure bridge technical field of construction, refer more particularly to outside a kind of lower support type English truss and be linked with cable passage steel bridge.
Background technology
Along with the development that port works is built, in the district of port, large span steel structure band cable passage steel bridge application demand increases.Traditional truss-like, arch purlin formula band cable steel bridge, lack the overall planning of the using function to structure, construction costs, convenience for construction, working service performance, is difficult to accomplish that economical rationality takes into account construction convenient.
Traditional parallel chord truss formula steel bridge, the main stressed member of truss is welded by shaped steel, and piece table area is large and there is the more close gap being difficult to safeguard, is unfavorable for that the durability of structure and operating period safeguard for harbour engineering; Tradition arch purlin formula steel bridge, scantling is various, cross section is thin, for harbour engineering to construction and working service all more unfavorable; Conventional belt cable steel bridge arranges two and is independently with cable passage, walkwaies, and be with cable object and the passage bridge that arranges relative to being mainly between harbour engineering pier and pier, bridge floor functional areas arrange burden, materials waste and maintenance cost is larger.
Summary of the invention
Technical problem to be solved by this invention is just to the technical deficiency of above-mentioned existence, provide a kind of safe and reliable, easy to use, cheap, succinctly attractive in appearance, constructing is linked with cable passage steel bridge outside lower support type English truss easily.
The technical solution adopted for the present invention to solve the technical problems is:
Cable passage steel bridge is linked with outside a kind of lower support type English truss, it is characterized in that: comprise three chord members be parallel to each other, three strings pole-footing is divided into two lower chords and a upper chord according to locus, the strut carrying out supporting is welded with between every two parallel chord members, strut between every two parallel chord members joins end to end, form the supporting surface of multiple triangular structure, three supporting surfaces are combined into firm triangular truss space-load system; The band cable passage extended along lower chord direction is hung with outside the outside of in described lower chord; Described upper chord, in the vertical orthography in bottom support face, is in eccentric position, and near being linked with cable passage side outward
In such scheme, what described chord member and the strut between chord member adopted is pass through mutually to weld directly to weld.
In such scheme, described band cable passage includes the in length and breadth beam of bottom for supporting, and is arranged on the bridge floor above beam in length and breadth.
In such scheme, described beam in length and breadth includes the supporting surface structure of passage crossbeam and passage longeron composition, and beam directly welds with lower chord in length and breadth.
In such scheme, the bridge floor of described band cable passage is horizontal plane, and bridge floor is set to removable steel grating structure, and is provided with railing in bridge floor both sides.
In such scheme, described chord member and strut are hollow round steel pipe.
Beneficial effect of the present invention is:
1, main stress component is lower support type parallel chords steel pipe triangular truss.English truss space-load system, can provide enough bending resistances, torsional rigidity for plug-in band cable passage.
2, English truss number of components is few, is conducive to construction and operating period maintenance.
3, be with outside cable passage and be hung on outside English truss lower chord, and unite two into one with walkway, make structure design more economical, succinct, reasonable.
4, English truss and band cable channel aspect beam are steel tube section, and exposed surface area is minimum, and design period is reserved rational corrosion thickness and provided paint Corrosion prevention scheme, can ensure total life cycle structural safety, and requires that necessary engineering cost is minimum because corroding.
6, be with cable passage bridge floor to be changeable type steel grating, safety guarantee reliably can be provided more rationally for structure in the operating period.
Accompanying drawing explanation
Fig. 1 is the three-dimensional perspective schematic diagram of the embodiment of the present invention;
Fig. 2 is the front view of the embodiment of the present invention;
Fig. 3 is the structure section figure of the embodiment of the present invention;
Fig. 4 is the top view of the embodiment of the present invention;
In figure: 1, upper chord, 2, bottom right chord member, 3, lower-left chord member, 4, right strut, 5, left strut, 6, lower supporting rod, 7, passage crossbeam, 8, passage longeron, 9, railing, 10, bridge floor.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is further illustrated:
Cable passage steel bridge is linked with outside lower support type English truss as shown in Figures 1 to 4, comprise three chord members be parallel to each other, three strings pole-footing is divided into bottom right chord member 2, lower-left chord member 3 and a upper chord 1 according to locus, the strut carrying out supporting is welded with between every two parallel chord members, be respectively: right strut 4, left strut 5, lower supporting rod 6, strut between every two parallel chord members joins end to end, form the supporting surface of multiple triangular structure, three supporting surfaces are combined into firm triangular truss space-load system; The band cable passage extended along bottom right chord member 2 direction is hung with outside the outside of described bottom right chord member 2; Described upper chord 1, in the vertical orthography in bottom support face, is in eccentric position, and near being linked with cable passage side outward.
In the present embodiment, what described chord member and each strut between chord member adopted is pass through mutually to weld directly to weld.
In the present embodiment, described band cable passage includes the in length and breadth beam of bottom for supporting, and is arranged on the bridge floor 10 above beam in length and breadth.
In the present embodiment, described beam in length and breadth includes the supporting surface structure of passage crossbeam 7 and passage longeron 8 composition, and beam directly welds with bottom right chord member 2 in length and breadth.
In the present embodiment, the bridge floor 10 of described band cable passage is horizontal plane, and bridge floor 10 is set to removable steel grating structure, and is provided with railing 9 in bridge floor both sides.
In the present embodiment, described each chord member and each strut are hollow round steel pipe.
During concrete construction, material therefor is as follows:
A certain 56m is across sea port dock band cable passage bridge, and lower support type triangle steel tubular truss height is 4 meters, and bottom right chord member 2 is 3.0m with the center distance of lower-left chord member 3, and bottom right chord member 2 is 1.4m with the center distance of passage longeron 8.
Upper chord 1 selects φ 457mm wall thickness 12mm round steel pipe, and φ 457mm wall thickness 12mm round steel pipe selected by bottom right chord member 2, and φ 356mm wall thickness 10mm round steel pipe selected by lower-left chord member 3; φ 219mm wall thickness 8mm round steel pipe selected by right strut 4, and φ 140mm wall thickness 8mm round steel pipe selected by left strut 5, and lower supporting rod 6 selects φ 140mm wall thickness 8mm round steel pipe; Passage crossbeam 7 and passage longeron 8 select φ 140mm wall thickness 8mm round steel pipe; Bridge floor 10 is select WB325/1 to soak zinc steel grating.After above-mentioned optimization, full-bridge steel using amount 45t.
Protection scope of the present invention is not limited to the above embodiments, and obviously, those skilled in the art can carry out various change and distortion to the present invention and not depart from the scope of the present invention and spirit.If these are changed and distortion belongs in the scope of the claims in the present invention and equivalent technologies thereof, then the intent of the present invention also comprises these changes and distortion.

Claims (6)

1. be linked with cable passage steel bridge outside a lower support type English truss, it is characterized in that: comprise three chord members be parallel to each other, three strings pole-footing is divided into two lower chords and a upper chord according to locus, the strut carrying out supporting is welded with between every two parallel chord members, strut between every two parallel chord members joins end to end, form the supporting surface of multiple triangular structure, three supporting surfaces are combined into firm triangular truss space-load system; The band cable passage extended along lower chord direction is hung with outside the outside of in described lower chord; Described upper chord, in the vertical orthography in bottom support face, is in eccentric position, and near being linked with cable passage side outward.
2. be linked with cable passage steel bridge outside lower support type English truss as claimed in claim 1, it is characterized in that: what described chord member and the strut between chord member adopted is pass through mutually to weld directly to weld.
3. be linked with cable passage steel bridge outside lower support type English truss as claimed in claim 1, it is characterized in that: described band cable passage includes the in length and breadth beam of bottom for supporting, and be arranged on the bridge floor above beam in length and breadth.
4. be linked with cable passage steel bridge outside lower support type English truss as claimed in claim 3, it is characterized in that: described beam in length and breadth includes the supporting surface structure of passage crossbeam and passage longeron composition, and beam directly welds with lower chord in length and breadth.
5. be linked with cable passage steel bridge outside lower support type English truss as claimed in claim 1, it is characterized in that: the bridge floor of described band cable passage is horizontal plane, and bridge floor is set to removable steel grating structure, and is provided with railing in bridge floor both sides.
6. be linked with cable passage steel bridge outside lower support type English truss as claimed in claim 1, it is characterized in that: described chord member and strut are hollow round steel pipe.
CN201410130085.5A 2014-04-02 2014-04-02 Cable passage steel bridge is linked with outside lower support type English truss Active CN103993554B (en)

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CN103993554B true CN103993554B (en) 2016-04-13

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112227733A (en) * 2020-10-30 2021-01-15 中冶建工集团重庆钢结构有限公司 Installation method of three-way pipe truss

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09310311A (en) * 1996-05-22 1997-12-02 Sumitomo Heavy Ind Ltd Reinforcing structure of truss bridge
KR100848869B1 (en) * 2007-08-28 2008-07-29 노윤근 The truss temporary construction bridge was used triangle unit truss
CN102535327B (en) * 2012-02-03 2014-06-04 西安中交土木科技有限公司 Through prestress steel truss and concrete combined continuous steel structure bridge and construction method thereof
CN202787047U (en) * 2012-07-13 2013-03-13 中铁工程设计咨询集团有限公司 Deck type triangular steel truss composite beam
CN102776829A (en) * 2012-08-16 2012-11-14 安徽省交通规划设计研究院有限公司 Steel pipe concrete combined truss bridge
CN202899016U (en) * 2012-10-23 2013-04-24 湖北华舟重工应急装备股份有限公司 Arched steel truss bridge with slide rails
CN203795295U (en) * 2014-04-02 2014-08-27 中交第二航务工程勘察设计院有限公司 Steel bridge with through triangular truss and external cable passage

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