CN109137713A - A kind of large span combination folding abdomen steel box-girder and construction method that horizontal support structure is set - Google Patents
A kind of large span combination folding abdomen steel box-girder and construction method that horizontal support structure is set Download PDFInfo
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- CN109137713A CN109137713A CN201811316481.1A CN201811316481A CN109137713A CN 109137713 A CN109137713 A CN 109137713A CN 201811316481 A CN201811316481 A CN 201811316481A CN 109137713 A CN109137713 A CN 109137713A
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- box beam
- steel
- folding
- support structure
- horizontal support
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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
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention discloses a kind of large span combination folding abdomen box beam and construction method that horizontal support structure is arranged, including box beam concrete top plate, box beam concrete bottom plate, folding shape steel web, steel truss and connecting plate；Connecting plate is welded on the interior lateral of two sides folding shape steel web, and the both ends of steel truss are connected by connecting plate and the folding shape steel web of two sides；Steel truss and connecting plate form horizontal support structure；Box beam concrete top plate and box beam concrete bottom plate are cast in the top and bottom of folding shape steel web respectively.The large span combination folding abdomen box beam of the horizontal support structure of setting of the invention, horizontal brace main structure is steel truss, and rod piece is light-weight, easy to process, simple structure, and construction operability is good, is easily guaranteed that construction quality, has economy and practicability；Abdomen box beam is rolled in the combination simultaneously, and structure innovation improves folding shape steel web complete buckling limit stress by the way that horizontal support structure is arranged, increases substantially the span of folding shape steel web bridge.
Description
Technical field
The present invention relates to technical field of bridge engineering, more particularly to a kind of large span combination folding that horizontal support structure is arranged
Abdomen steel box-girder and construction method.
Background technique
Combination folding abdomen box beam has fundamentally avoided beam root (beam-ends) abdomen existing for general prestressed concrete box-beam bridge
Plate cracking and mid-span deflection continue to decline two kinds of Common Diseases problems, reasonably combine two kinds of steel, concrete materials, improve
Stability, intensity and the materials'use efficiency of structure.Therefore, theoretically combination folding abdomen box girder bridge can be more than concrete web beam
Bridge reaches bigger span, and prestressed concrete beam bridge maximum span alreadys exceed 300m at present, and abdomen case is rolled in built combination
Beam bridge maximum span is 164m, which is also far from reaching the maximum span of built concrete web beam bridge, does not have more
Reach the Limit Span of combination folding abdomen box girder bridge.
With being gradually increased for span of bridge, box beam height is also increased accordingly, the buckling stability problem of Wavelike steel webplate
Become especially prominent, becomes and restrict one of the principal element that combination folding abdomen box girder bridge across footpath increases.With 1600 types of plate thickness 30mm
For waveform steel abdomen, when combination folding abdomen box girder bridge across footpath is more than 180m, i.e., when folding shape steel web height h is more than 6.9m, steel
Web complete buckling limit stress is located at the non-resilient domain of steel, buckling stress is less than yield stress, with web height after
Continuous to increase, complete buckling limit stress will substantially reduce, and material is not in full use.Currently, to improve folding shape steel web
Complete buckling stability, main method are to increase folding shape steel web thickness or concrete lining is arranged on the inside of steel web to be formed
Compound web plate.Increase steel plate thickness, it is not significant for improving folding shape steel web complete buckling stabilizing effect, and material can be made
Material use is uneconomical, while increasing processing and installation difficulty.Inner lining concrete is arranged on the inside of steel web can reduce folding shape
Steel web shear stress improves the stability of folding shape steel web, but inner lining concrete is arranged and will limit the pleat of folding shape steel web
Wrinkle effect, reduces the prestress application efficiency of combination folding abdomen box girder bridge, while increasing bridge self weight, obstruction combination folding abdomen box girder bridge
The increase of across footpath.
Summary of the invention
The object of the present invention is to provide a kind of large span combination folding abdomen box beams and construction method that horizontal support structure is arranged, can
To better solve large span folding shape steel Buckling of Web stable problem, the span of combination folding abdomen box girder bridge is increased substantially, more
Fully play the advantage of combination folding abdomen box girder bridge.
To achieve the above object, the present invention provides following schemes: the present invention, which provides, a kind of is arranged the big of horizontal support structure
Span combination folding abdomen box beam, including box beam concrete top plate, box beam concrete bottom plate, folding shape steel web, steel truss and connecting plate；
The connecting plate is welded on the interior lateral of folding shape steel web described in two sides, and the both ends of the steel truss pass through the connecting plate and two
The folding shape steel web of side connects；The steel truss and the connecting plate form horizontal support structure；The box beam concrete top
Plate and box beam concrete bottom plate are cast in the top and bottom of the folding shape steel web respectively.
Preferably, the folding abdomen box beam is arranged in continuous beam or continuous rigid frame bridge, and box beam is high at left and right sides of intermediate main pier
Spend big section.
Preferably, height the bending according to the folding shape steel web of upper limb of the steel truss apart from the folding shape steel web
Bent stable calculation result determines.
Preferably, the height of upper limb of the steel truss apart from the folding shape steel web is 5-7m.
Preferably, the connecting plate at the both ends and two sides of the steel truss by welding or is bolted fixation.
Preferably, the rod piece of the steel truss is made of angle steel or channel steel or rectangular steel pipe or round steel pipe.
Preferably, the shape and structure of the steel truss is K-type or triangle or X-type.
Preferably, the steel plate thickness of the connecting plate is 16-30mm.
The present invention also provides a kind of construction methods of large span combination folding abdomen box beam that horizontal support structure is arranged, and are applied to upper
The large span combination folding abdomen box beam of the horizontal support structure of the setting stated, comprising the following steps:
Processing folding shape steel web and steel truss in the factory, and connecting plate and the folding shape steel web are subjected to welding group
It closes, then transports to construction site；
The folding shape steel web is installed in place by equipment such as Hanging Basket, Bridge Erectors, then the steel truss is installed, and by institute
Steel truss is stated to be fixed temporarily with the folding shape steel web；
The spatial position that folding the shape steel web and steel truss are accurately adjusted according to Bridge Design absolute altitude, then by the steel
Truss is firm by welding or being bolted with connecting plate；
The reinforcing bar for binding box beam concrete top plate and box beam concrete bottom plate, pours the box beam concrete top plate and box beam
Concrete floor forms the large span combination folding abdomen box beam system that horizontal support structure is arranged after concrete setting.
The present invention achieves following technical effect compared with the existing technology:
1, the large span combination folding abdomen box beam of the horizontal support structure of setting of the invention, structure innovation, by the way that horizontal brace is arranged
Structure improves folding shape steel web complete buckling limit stress, increases substantially the span of folding shape steel web bridge.
2, horizontal brace main structure is steel truss, and for steel truss rod piece using conventional Steel section member, rod piece is light-weight, is easy to
Processing, steel truss is rolled over to take between shape steel web in direction across bridge by connecting plate and box beam to be welded to connect or is bolted, structure
It makes simply, construction operability is good, is easily guaranteed that construction quality, has economy and practicability.
3, the interim positioning stull that horizontal support structure can be used as in the box beam folding rigid web installation process of shape uses, and realizes interim
The unification of structure and permanent structure facilitates construction, saves material.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the large span combination folding abdomen box beam side elevation schematic diagram that horizontal support structure is arranged in the present invention；
Fig. 2 is the large span combination folding abdomen box beam schematic cross-sectional view that horizontal support structure is arranged in the present invention；
Fig. 3 is the A-A section horizontal brace structural plan schematic diagram 1 along Fig. 2；
Fig. 4 is the A-A section horizontal brace structural plan schematic diagram 2 along Fig. 2；
Fig. 5 is the A-A section horizontal brace structural plan schematic diagram 3 along Fig. 2；
Fig. 6 connect full-page proof schematic diagram with the folding rigid web of shape by connecting plate for steel truss；
Wherein, 1 is box beam concrete top plate, and 2 be box beam concrete bottom plate, and 3 be folding shape steel web, and 4 be steel truss, and 5 are
Connecting plate.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of large span combination folding abdomen box beams and construction method that horizontal support structure is arranged, can
To better solve large span folding shape steel Buckling of Web stable problem, the span of combination folding abdomen box girder bridge is increased substantially, more
Fully play the advantage of combination folding abdomen box girder bridge.
Based on this, the large span combination folding abdomen box beam of the horizontal support structure of setting provided by the invention, including box beam concrete
Top plate, box beam concrete bottom plate, folding shape steel web, steel truss and connecting plate；Connecting plate is welded on the interior of two sides folding shape steel web
Laterally, the both ends of steel truss are connected by connecting plate and the folding shape steel web of two sides；Steel truss and connecting plate form horizontal brace knot
Structure；Box beam concrete top plate and box beam concrete bottom plate are cast in the top and bottom of folding shape steel web respectively.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Please refer to Fig. 1-6, wherein Fig. 1 is the large span combination folding abdomen box beam side elevation that horizontal support structure is arranged in the present invention
Schematic diagram；Fig. 2 is the large span combination folding abdomen box beam schematic cross-sectional view that horizontal support structure is arranged in the present invention；Fig. 3 is along Fig. 2
A-A section horizontal brace structural plan schematic diagram 1；Fig. 4 is the A-A section horizontal brace structural plan schematic diagram 2 along Fig. 2；Fig. 5 is edge
A-A section horizontal brace structural plan schematic diagram 3 in Fig. 2；Fig. 6 connect full-page proof with the folding rigid web of shape by connecting plate for steel truss and shows
It is intended to.
As shown in figures 1 to 6, in the case where not increasing folding shape steel 3 thickness of web, a kind of setting proposed by the present invention is horizontal
The large span combination folding abdomen box beam of support structure can greatly improve steel web Out-of Plane Stiffness, and the buckling for improving steel web is stablized
Property, so that the across footpath of combination folding abdomen box girder bridge be greatly improved.
The large span combination folding abdomen box beam of horizontal support structure, including box beam concrete top plate 1, box beam concrete bottom plate are set
2, shape steel web 3, steel truss 4 and connecting plate 5 are rolled over；Connecting plate 5 is welded on the interior lateral of two sides folding shape steel web 3, steel truss 4
Both ends are connect by connecting plate 5 with the folding shape steel web 3 of two sides；Steel truss 4 and connecting plate 5 form horizontal support structure；Box beam is mixed
Solidifying soil top plate 1 and box beam concrete bottom plate 2 are cast in the top and bottom of folding shape steel web 3 respectively.
Combination folding abdomen box beam is arranged in continuous beam or continuous rigid frame bridge, and box beam height is biggish at left and right sides of intermediate main pier
Section, horizontal brace structure are laterally connect with folding shape steel web 3.Height of the steel truss 4 apart from web upper limb can be according to folding shape steel abdomen
The buckling stability calculated result of plate 3 determines, generally can use 5-7m.
To mitigate box beam weight, horizontal brace main structure is steel truss 4, and two sides are connected by connecting plate 5 and folding shape steel web 3
It connects, connecting plate 5 and folding shape steel web 3 weld, and steel truss 4 can be by welding or being bolted with connecting plate 5.
Steel truss 4 can choose K-type (Fig. 3) or triangle (Fig. 4) or X-type (Fig. 5) etc..Connecting plate 5 and folding shape steel
Web 3 is welded, and steel truss 4 and connecting plate 5 can take welding or bolted mode, 5 steel plate thickness of connecting plate
Can be determined according to calculating, generally 16-30mm, the fashioned iron rod piece in 4 structure of steel truss can take angle steel or channel steel,
Or rectangular steel pipe or round steel pipe, size can be determined according to calculating.
The present invention also provides a kind of construction methods of large span combination folding abdomen box beam that horizontal support structure is arranged, and are applied to upper
The large span combination folding abdomen box beam of the horizontal support structure of the setting stated, comprising the following steps:
Processing folding shape steel web 3 and steel truss 4 in the factory, and connecting plate 5 and folding shape steel web 3 are subjected to welding group
It closes, then transports to construction site；
Folding shape steel web 3 is installed in place by equipment such as Hanging Basket, Bridge Erectors, then steel truss 4 is installed, and by steel truss 4
It is fixed temporarily with folding shape steel web 3；
The spatial position that folding shape steel web 3 and steel truss 4 is accurately adjusted according to Bridge Design absolute altitude, then by steel truss 4
It is firm by welding or being bolted with connecting plate 5；
The reinforcing bar for binding box beam concrete top plate 1 and box beam concrete bottom plate 2, pours box beam concrete top plate 1 and box beam
Concrete floor 2 forms the large span combination folding abdomen box beam system that horizontal support structure is arranged after concrete setting.
It should be noted that the large span combination folding abdomen box beam of the horizontal support structure of setting in the present invention, above-described embodiment
In the selections of correlation values only represent a kind of embodiment that may be implemented, in actual use can as the case may be into
The calculating and selection of row adaptability, also within the scope of the present invention；As long as in addition, with the basic principle phase in the present invention
It together, is only the simple replacement or additions and deletions of single component, equally also within the scope of the present invention.
Specific examples are applied in the present invention, and principle and implementation of the present invention are described, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to
According to thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification
It should not be construed as limiting the invention.
Claims (9)
1. a kind of large span combination folding abdomen box beam that horizontal support structure is arranged, it is characterised in that: including box beam concrete top plate, case
Beam concrete floor, folding shape steel web, steel truss and connecting plate；The connecting plate is welded on the interior of folding shape steel web described in two sides
Laterally, the both ends of the steel truss are connected by the connecting plate and the folding shape steel web of two sides；The steel truss and institute
State the horizontal support structure of connecting plate composition；The box beam concrete top plate and box beam concrete bottom plate are cast in the folding shape steel respectively
The top and bottom of web.
2. the large span combination folding abdomen box beam of the horizontal support structure of setting according to claim 1, it is characterised in that: the folding
Abdomen box beam is arranged in continuous beam or continuous rigid frame bridge, the big section of box beam height at left and right sides of intermediate main pier.
3. the large span combination folding abdomen box beam of the horizontal support structure of setting according to claim 1, it is characterised in that: the steel
The height of upper limb of the truss apart from the folding shape steel web is determined according to the buckling stability calculated result of the folding shape steel web.
4. the large span combination folding abdomen box beam of the horizontal support structure of setting according to claim 1, it is characterised in that: the steel
The height of upper limb of the truss apart from the folding shape steel web is 5-7m.
5. the large span combination folding abdomen box beam of the horizontal support structure of setting according to claim 1, it is characterised in that: the steel
The both ends of truss and the connecting plate of two sides by welding or are bolted fixation.
6. the large span combination folding abdomen box beam of the horizontal support structure of setting according to claim 1, it is characterised in that: the steel
The rod piece of truss is made of angle steel or channel steel or rectangular steel pipe or round steel pipe.
7. the large span combination folding abdomen box beam of the horizontal support structure of setting according to claim 1, it is characterised in that: the steel
The shape and structure of truss is K-type or triangle or X-type.
8. the large span combination folding abdomen box beam of the horizontal support structure of setting according to claim 1, it is characterised in that: the company
The steel plate thickness of fishplate bar is 16-30mm.
9. a kind of construction method for the large span combination folding abdomen box beam that horizontal support structure is arranged, is applied to appoint in claim 1-8
The large span combination folding abdomen box beam of the horizontal support structure of setting described in one, it is characterised in that: the following steps are included:
Processing folding shape steel web and steel truss in the factory, and connecting plate is subjected to welding with the folding shape steel web and is combined, so
After transport to construction site；
The folding shape steel web is installed in place by equipment such as Hanging Basket, Bridge Erectors, then the steel truss is installed, and by the steel
Truss is fixed temporarily with the folding shape steel web；
The spatial position that folding the shape steel web and steel truss are accurately adjusted according to Bridge Design absolute altitude, then by the steel truss
It is firm by welding or being bolted with connecting plate；
The reinforcing bar for binding box beam concrete top plate and box beam concrete bottom plate, pours the box beam concrete top plate and box beam coagulation
Native bottom plate forms the large span combination folding abdomen box beam system that horizontal support structure is arranged after concrete setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811316481.1A CN109137713A (en) | 2018-11-07 | 2018-11-07 | A kind of large span combination folding abdomen steel box-girder and construction method that horizontal support structure is set |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811316481.1A CN109137713A (en) | 2018-11-07 | 2018-11-07 | A kind of large span combination folding abdomen steel box-girder and construction method that horizontal support structure is set |
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| CN109137713A true CN109137713A (en) | 2019-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811316481.1A Pending CN109137713A (en) | 2018-11-07 | 2018-11-07 | A kind of large span combination folding abdomen steel box-girder and construction method that horizontal support structure is set |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113605208A (en) * | 2021-08-11 | 2021-11-05 | 长安大学 | Corrugated steel web PC box girder, internal support external pulling device and construction method of support before lining |
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| KR20170121815A (en) * | 2016-04-26 | 2017-11-03 | 주식회사 승주이엔씨 | Corrugated Steel Plate Web-PSC beam And Bridge Construction Method Thereof |
| CN209024940U (en) * | 2018-11-07 | 2019-06-25 | 深圳市市政设计研究院有限公司 | A kind of large span combination folding abdomen steel box-girder that horizontal support structure is set |
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2018
- 2018-11-07 CN CN201811316481.1A patent/CN109137713A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200985489Y (en) * | 2006-12-27 | 2007-12-05 | 重庆交通大学 | Built-in inclined support rigid frame prestressed concrete variable cross-section box beam bridge |
| CN101424075A (en) * | 2008-11-24 | 2009-05-06 | 重庆交通大学 | Concrete box girder bridge widening and reinforced structure and construction method thereof |
| CN103741582A (en) * | 2013-12-30 | 2014-04-23 | 郑州大学 | Corrugated steel web polycarbonate (PC) combination box beam and construction method thereof |
| CN203977274U (en) * | 2014-01-16 | 2014-12-03 | 天环建设集团有限公司 | A kind of Truss Steel case beam |
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| KR20170121815A (en) * | 2016-04-26 | 2017-11-03 | 주식회사 승주이엔씨 | Corrugated Steel Plate Web-PSC beam And Bridge Construction Method Thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113605208A (en) * | 2021-08-11 | 2021-11-05 | 长安大学 | Corrugated steel web PC box girder, internal support external pulling device and construction method of support before lining |
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