CN106801376A - A kind of longitudinal rib overhead steel reinforced concrete composite entity box beam - Google Patents
A kind of longitudinal rib overhead steel reinforced concrete composite entity box beam Download PDFInfo
- Publication number
- CN106801376A CN106801376A CN201710150507.9A CN201710150507A CN106801376A CN 106801376 A CN106801376 A CN 106801376A CN 201710150507 A CN201710150507 A CN 201710150507A CN 106801376 A CN106801376 A CN 106801376A
- Authority
- CN
- China
- Prior art keywords
- plate
- longitudinal rib
- steel
- box beam
- composite entity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for 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
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/268—Composite concrete-metal
-
- 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
Abstract
The invention discloses a kind of longitudinal rib overhead steel reinforced concrete composite entity box beam, the box girder includes that open-topped opening box beam and the steel reinforced concrete for its open top to be closed positioned at opening box back portion combine top board；The steel reinforced concrete combination top board is made up of steel plate and the cast-in-place concrete slab above steel plate, the upper surface of the steel plate is provided with several along vertical bridge to the longitudinal rib with holes for extending, uniform intervals offer several through holes to the longitudinal rib with holes along its length, and described several longitudinal ribs with holes are laterally equipped with PBL shear connectors vertically arranged with longitudinal rib with holes in corresponding through hole.Longitudinal rib overhead steel reinforced concrete composite entity box beam of the invention not only possesses larger span ability and vertical rigidity, long service life, and speed of application is fast, construction cost is relatively low.
Description
Technical field
The invention belongs to the technical field of box girder, in particular to a kind of longitudinal rib overhead steel-mixed composite entity box beam.
Background technology
Current box section form mainly has concrete box girder and orthotropic steel box girder, is applied on bridge and is primarily present
Problems with：1st, from great, span ability is low, and speed of application is slow for conventional concrete box beam；2nd, orthotropic steel box girder, it is orthogonal different
Vertically and horizontally weld seam quantity is more in shape slab bridge face, and stress is complicated, easily produces fatigue crack；3rd, floorings cover plate rigidity is smaller, uses
Short life.
The content of the invention
Deficiency present invention aim to solve above-mentioned background technology, there is provided a kind of both to have possessed larger span ability
With vertical rigidity, long service life, and can a kind of speed of application is fast, construction cost is relatively low longitudinal rib overhead steel-mixed combination it is whole
Body box beam.
To achieve the above object, a kind of longitudinal rib overhead steel designed by the present invention-mixed composite entity box beam, including top
The opening box beam of opening and positioned at opening box back portion for steel-mixed combination top board for closing its open top；It is described
Steel-mixed combination top board is made up of steel plate and the cast-in-place concrete slab above steel plate, and the upper surface of the steel plate is provided with
Several along vertical bridge to extend longitudinal rib with holes, the longitudinal rib with holes along its length uniform intervals offer several lead to
Hole, described several longitudinal ribs with holes are laterally equipped with PBL shear connectors vertically arranged with longitudinal rib with holes in corresponding through hole；
The opening box beam includes that two are put down along vertical bridge between web when arranging in web and positioned at two and with it
The median ventral plate of row arrangement, is fixedly connected, the bottom and midfield of the side web between the bottom of the median ventral plate by flat underside
It is fixedly connected by inclined bottom plate between the bottom of plate, by steel-mixed combination top board between the side web and the top of median ventral plate
It is fixedly connected.
Further, tuyere, a surface side wall and the side web of the tuyere are provided with the outside of two side webs
Lateral wall fit.
Further, it is provided with the tuyere and the vertically arranged envelope mouth reinforcing plate of its inwall.
Further, several bottoms in inverted U for extending longitudinally are provided with the inwall of the flat underside, inclined bottom plate
Plate ribs.
Further, two described are provided with several while abdomens for extending longitudinally in web towards the side of median ventral plate
Plate reinforcing plate, each it is described while web reinforcing plate with while web be mutually perpendicular to arrangement.
Further, two relative sides of the median ventral plate are provided with several median ventral plates for extending longitudinally and strengthen
Plate, each described median ventral plate reinforcing plate is mutually perpendicular to arrangement with median ventral plate.
Further, several WELDING STUDSs are arranged at intervals between the steel plate and concrete slab.
Yet further, the steel plate is the clad steel plate being welded by top plate and lower plywood superposition, the upper strata
Plate is stainless steel plate, and the lower plywood is general steel plate.Further, the thickness of the concrete slab is 15~20cm.
Further, the flat underside, side web, inclined bottom plate and median ventral plate are steel plate member.
Compared with prior art, longitudinal rib overhead steel of the invention-mixed composite entity box beam, by overall steel box beam and longitudinal rib
On put steel-mixed combined bridge deck two parts composition, mainly by being put in top board longitudinal rib and bridge floor lays the measures such as concrete slab, solution
The major defect that conventional concrete of having determined box beam, orthotropic steel box girder are applied in bridge field, its advantage and creativeness are main
It is embodied in following several respects：
Compared with concrete box girder, longitudinal rib overhead steel of the invention-mixed composite entity box beam has the following advantages that：
(1) top board of the invention is combined using two kinds of materials of concrete and steel plate, has innovated railway deck system, fully profit
Respective material advantages are used, deadweight is alleviated, construction costs is reduced.
(2) present invention undertakes pulling force by the use of mounted steel plate of baseplate as template instead of reinforcing bar, saves template body
System, reduces amount of reinforcement, eliminates reinforcement fabrication and installs, and accelerates construction speed, shortens construction period.
(3) structure of the invention is mainly steel plate from heavy and light, and energy dissipation capacity is strong, and resistance to overturning and ductility preferably, have
There is good shock resistance.
Compared with orthotropic steel box girder, longitudinal rib overhead steel of the invention-mixed composite entity box beam has the following advantages that：
(1) said from loading angle, steel, concrete material are mutually combined, form combined floorings, force modes are more excellent
More.Because this kind of combined bridge deck is under deck system and cover plate system, the examining tensile behavior and plate of steel bottom wing listrium are make use of
Upper concrete compression performance, has fully played the respective advantage of steel, concrete material, combined bridge deck stress is more closed
Reason, improves the durability of structure.
(2) said from support rail structural point, steel-mix stress entirety of the combined bridge deck as structure, than the conventional orthogonal opposite sex
The cover plate rigidity of floorings wants big many, can be conducive to track stability as having ballast bed and rigid basement without tiny fragments of stone, coal, etc. pedestal.
(3) from for antifatigue angle, longitudinal rib top loaded type combined bridge deck has more preferable anti-fatigue performance, conventional orthogonal
The longitudinal stiffener of different in nature steel bridge deck is typically disposed in inside box beam, at diaphragm plate or tabula position of putting more energy into, longitudinal stiffener
Intersect with diaphragm plate, vertical, horizontal weld seam is more and stress is complicated on steel bridge deck, if the design or construction wrong of detail structure,
Steel box-girder may be caused fatigue problem occur, and put in the longitudinal rib of steel box-girder of the invention, will longitudinal stiffener be located at steel bridge
Outside the top box beam of panel, now diaphragm plate is not in intersect with longitudinal stiffener, simple structure and weld seam at diaphragm plate
Quantity is few, and therefore the fatigue behaviour of steel bridge deck is also improved.
(4) longitudinal rib overhead steel of the invention-mixed combined bridge deck substitutes Orthotropic Steel Bridge Deck, and economy is more excellent,
Longitudinal rib overhead steel-mixed composite entity box beam, is different from the conventional opening of beam in length and breadth deck system, has given full play to steel and has mixed
Two kinds of advantages of material of solidifying soil, section bending resistance torsional moment inertia is big, and bridge floor local stiffness and girder integral rigidity can be significantly
Improve.
Brief description of the drawings
Fig. 1 is a kind of structural representation of longitudinal rib overhead steel of the invention-mixed composite entity box beam；
Fig. 2 is the mplifying structure schematic diagram at A in the present invention；
Wherein：1- steel-mixed combination top board, 1.1- steel plates, 1.2- concrete slabs, 2- flat undersides, 3- sides web, 4- are oblique
Base plate, 5- median ventral plates, 6- longitudinal ribs with holes, 7- WELDING STUDSs, 8- tuyeres, 9- envelope mouths reinforcing plate, 10- base plates ribs, 11- sides web
Reinforcing plate, 12- median ventral plates reinforcing plate, 13-PBL shear connectors, 14- openings box beam.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
A kind of longitudinal rib overhead steel as depicted-mixed composite entity box beam, including open-topped opening box beam 14 and
Positioned at opening box beam 14 top top board 1 is combined for the steel-mixed for close its open top.Steel-mixed combination top board 1 is by steel plate
1.1 and the cast-in-place concrete slab 1.2 in the top of steel plate 1.1 constitute, such steel, concrete material are mutually combined, formation group
Mould assembly floorings, force modes are more superior.The upper surface of steel plate 1.1 is provided with several along vertical bridge to the longitudinal rib with holes for extending
6, longitudinal rib with holes 6 is rectangle, and uniform intervals offer several through holes to longitudinal rib with holes 6 along its length, and through hole is circle
Shape through hole.PBL shear connectors 13 vertically arranged with longitudinal rib with holes 6 are equipped with the horizontal corresponding through hole of several longitudinal ribs with holes 6,
PBL shear connectors 13 transversely link all longitudinal ribs with holes 6 as lateral connection shear connector.Between steel sole plate and concrete slab
It is longitudinally arranged to form longitudinal rib with holes 6 as combined shear key using the steel plate of perforate, forms lattice, makes full use of respective material
Advantage, alleviates deadweight, reduces construction costs.Opening box beam 14 is including two along vertical bridge is to the side web 3 of arrangement and is located at
Between two side webs 3 and arrangement in parallel median ventral plate 5, median ventral plate 5 and side web 3 along vertical bridge to length it is identical, in
Web 5 and the top of side web 3 are located on same horizontal plane, the vertical length of the vertical length more than side web 3 of median ventral plate 5.
It is fixedly connected by flat underside 2 between two bottoms of median ventral plate 5, is passed through between the bottom of side web 3 and the bottom of median ventral plate 5
Inclined bottom plate 4 is fixedly connected, and is fixedly connected by steel-mixed combination top board 1 between the top of side web 3 and median ventral plate 5.Steel plate 1.1
It is the clad steel plate being welded by top plate and lower plywood superposition, top plate is stainless steel plate, and lower plywood is general steel plate.It is mixed
The thickness of solidifying soil floorings 1.2 is 15~20cm.Flat underside 2, side web 3, inclined bottom plate 4 and median ventral plate 5 are steel plate structure
Part, is arranged at intervals with several WELDING STUDSs 7 between steel plate 1.1 and concrete slab 1.2.So, using steel plate 1.1 as bridge
Face base plate, as template, pours 15~20cm concrete slabs 1.2 thereon, because this kind of combined bridge deck is in deck system
Under cover plate system, concrete compression performance on the examining tensile behavior and plate of steel bottom wing listrium is make use of, fully played steel
The respective advantage of material, concrete material, makes combined bridge deck stress more reasonable.
In above-mentioned technical proposal, the outside of two side webs 3 is provided with tuyere 8, a surface side wall and the side web of tuyere 8
3 lateral wall fits, and is provided with and the vertically arranged envelope mouth reinforcing plate 9 of its inwall in tuyere 8.Flat underside 2, inclined bottom plate 4
Several base plate ribs 10 in inverted U for extending longitudinally are provided with inwall.Two side webs 3 are towards median ventral plate 5
Side is provided with that several extend longitudinally side web reinforcing plate 11, each while web reinforcing plate 11 with while web 3 it is mutual
It is arranged vertically.Two relative sides of median ventral plate 5 are provided with several median ventral plate reinforcing plates 12 for extending longitudinally, in each
Web reinforcing plate 12 is mutually perpendicular to arrangement with median ventral plate 5.
More than, specific embodiment only of the invention, it is noted that any those of ordinary skill in the art are in this hair
In bright disclosed technical scope, the change or replacement that can be readily occurred in should all be included within the scope of the present invention.
Claims (10)
1. a kind of longitudinal rib overhead steel-mixed composite entity box beam, it is characterised in that：Including it is open-topped opening box beam (14),
With steel-mixed combination top board (1) at the top of opening box beam (14) for its open top to be closed；The steel-mixed combination
Top board (1) is made up of steel plate (1.1) and the cast-in-place concrete slab (1.2) above steel plate (1.1), the steel plate (1.1)
Upper surface be provided with several along vertical bridge to the longitudinal rib with holes (6) for extending, the longitudinal rib (6) with holes is uniform along its length
Interval offers several through holes, is equipped with and longitudinal rib with holes (6) in the horizontal corresponding through hole of several longitudinal ribs (6) with holes
Vertically arranged PBL shear connectors (13)；
Opening box beam (14) including two along vertical bridge to arrangement in web (3) and positioned at two while web (3) between and
The median ventral plate (5) of arrangement in parallel, is fixedly connected, the side abdomen between the bottom of the median ventral plate (5) by flat underside (2)
It is fixedly connected by inclined bottom plate (4) between the bottom of plate (3) and the bottom of median ventral plate (5), the side web (3) and median ventral plate
(5) it is fixedly connected by steel-mixed combination top board (1) between top.
2. longitudinal rib overhead steel according to claim 1-mixed composite entity box beam, it is characterised in that：Two side abdomens
Tuyere (8) is provided with the outside of plate (3), a surface side wall and the lateral wall of side web (3) of the tuyere (8) fit.
3. longitudinal rib overhead steel according to claim 2-mixed composite entity box beam, it is characterised in that：In the tuyere (8)
It is provided with and the vertically arranged envelope mouth reinforcing plate (9) of its inwall.
4. the longitudinal rib overhead steel according to claim 1 or 2 or 3-mixed composite entity box beam, it is characterised in that：It is described flat
Several base plate ribs (10) in inverted U for extending longitudinally are provided with base plate (2), the inwall of inclined bottom plate (4).
5. the longitudinal rib overhead steel according to claim 1 or 2 or 3-mixed composite entity box beam, it is characterised in that：Two institutes
State while web (3) towards the side of median ventral plate (5) be provided with that several extend longitudinally while web reinforcing plate (11), each
It is described while web reinforcing plate (11) with while web (3) be mutually perpendicular to arrangement.
6. the longitudinal rib overhead steel according to claim 1 or 2 or 3-mixed composite entity box beam, it is characterised in that：Two institutes
State the relative side of median ventral plate (5) and be provided with several median ventral plate reinforcing plates (12) for extending longitudinally, each described midfield
Plate reinforcing plate (12) is mutually perpendicular to arrangement with median ventral plate (5).
7. the longitudinal rib overhead steel according to claim 1 or 2 or 3-mixed composite entity box beam, it is characterised in that：The steel
Plate (1.1) is the clad steel plate being welded by top plate and lower plywood superposition, and the top plate is stainless steel plate, the lower floor
Plate is general steel plate.
8. the longitudinal rib overhead steel according to claim 1 or 2 or 3-mixed composite entity box beam, it is characterised in that：The steel
Several WELDING STUDSs (7) are arranged at intervals between plate (1.1) and concrete slab (1.2).
9. the longitudinal rib overhead steel according to claim 1 or 2 or 3-mixed composite entity box beam, it is characterised in that：It is described mixed
The thickness of solidifying soil floorings (1.2) is 15~20cm.
10. the longitudinal rib overhead steel according to claim 1 or 2 or 3-mixed composite entity box beam, it is characterised in that：It is described flat
Base plate (2), side web (3), inclined bottom plate (4) and median ventral plate (5) are steel plate member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710150507.9A CN106801376A (en) | 2017-03-14 | 2017-03-14 | A kind of longitudinal rib overhead steel reinforced concrete composite entity box beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710150507.9A CN106801376A (en) | 2017-03-14 | 2017-03-14 | A kind of longitudinal rib overhead steel reinforced concrete composite entity box beam |
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| Publication Number | Publication Date |
|---|---|
| CN106801376A true CN106801376A (en) | 2017-06-06 |
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ID=58988265
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710150507.9A Pending CN106801376A (en) | 2017-03-14 | 2017-03-14 | A kind of longitudinal rib overhead steel reinforced concrete composite entity box beam |
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| CN (1) | CN106801376A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107227682A (en) * | 2017-07-20 | 2017-10-03 | 长安大学 | A kind of PBL puts more energy into type flat steel case concrete plate arch and its construction method |
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2017
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107227682A (en) * | 2017-07-20 | 2017-10-03 | 长安大学 | A kind of PBL puts more energy into type flat steel case concrete plate arch and its construction method |
| CN107227682B (en) * | 2017-07-20 | 2023-11-07 | 长安大学 | PBL stiffening type flat steel box concrete slab arch and construction method thereof |
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