CN209066242U - A kind of Novel steel-concrete composite beam bridge structure - Google Patents
A kind of Novel steel-concrete composite beam bridge structure Download PDFInfo
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- CN209066242U CN209066242U CN201821764500.2U CN201821764500U CN209066242U CN 209066242 U CN209066242 U CN 209066242U CN 201821764500 U CN201821764500 U CN 201821764500U CN 209066242 U CN209066242 U CN 209066242U
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Abstract
The utility model discloses a kind of Novel steel-concrete composite beam bridge structures, including two I-steel girders disposed in parallel, each I-steel girder top flange plate is equipped with several top flange WELDING STUDSs, bottom wing listrium inside upper surface is equipped with several lower flange WELDING STUDSs, two I-steel girder top flange plates are connect by all top flange WELDING STUDSs with bridge floor cast in place concrete plate, it is connected by all lower flange WELDING STUDSs with double combination section cast in place concrete plate between two I-steel girder bottom wing listriums of support region, precast slab is set between two I-steel girder bottom wing listriums in span centre region, precast slab connects all lower flange WELDING STUDSs by cast-in-place wet seam, form closing box structure.With a kind of Novel steel-concrete composite beam bridge structure of the utility model, entire load-carrying members are broken the whole up into parts, primary structural component is resolved into, convenient for manufacture, transport and installation, economic benefit and social benefit are significant.
Description
Technical field
The utility model relates to bridge structure field, in particular to a kind of Novel steel-concrete composite beam bridge structure.
Background technique
In Modern Bridge Engineering, the solidifying native composite structure of steel-concrete has become after reinforced concrete structure, steel construction
Another important bridge structure form.With the fast development of China's communication, the solidifying native composite beam bridge of steel-concrete is superior with its
Performance obtained increasingly extensive application.
Composite beam bridge is a kind of very competitive bridge structure form, it is by two kinds of material shapes of steel and concrete
Formula is combined together, and the superior examining tensile behavior of steel and the extremely strong Compressive Performance of concrete can be given full play to, to take into account structure
The good unification of economy and stress.
General common steel-concrete composite beams bridge is mainly the I-shaped steel-concrete composite beams of open-type and the groove profile of closed type
Steel-concrete composite beams.Both structure types are each advantageous, and I-shaped steel-concrete composite beams, which have, saves steel using amount, structural elements weight
The advantages such as amount is light, is convenient for manufacture transporting and hoisting, speed of application fast, but whole vertical rigidity and torsional rigidity are insufficient；U-steel-
In contrast, the rigidity of structure is big, bending resistance anti-twisting property is strong, but construction weight is big, and transporting and hoisting difficulty is big for concrete combination beam.It is how same
Shi Fahui structure overall stiffness is big, stress performance is good, anti-twisting property is strong, while can greatly save steel again, gives full play to two kinds
Material superiority of effectiveness, while constructing again convenient for quick-assembling, various execution conditions are adapted to, guarantee construction quality, are improved economical
Benefit is of great significance especially in railway, rail traffic and heavily loaded highway.
Utility model content
The purpose of the utility model is to overcome the existing I-shaped steel-concrete composite beams in the presence of the prior art integrally to erect
Insufficient to rigidity and torsional rigidity, existing groove profile steel-concrete composite beams construction weight is big, the big above-mentioned deficiency of transporting and hoisting difficulty,
A kind of Novel steel-concrete composite beam bridge structure is provided.
In order to realize above-mentioned purpose of utility model, the utility model provides following technical scheme:
A kind of Novel steel-concrete composite beam bridge structure, including two I-steel girders disposed in parallel, each I-shaped
Shape steel girder top flange plate is equipped with several top flange WELDING STUDSs, bottom wing listrium inside upper surface is sheared equipped with several lower flanges
Nail, two I-steel girder top flange plates are connected by all top flange WELDING STUDSs and bridge floor cast in place concrete plate
It connects, passes through all lower flange WELDING STUDSs and double combination between the I-steel girder bottom wing listrium of two of support region
Section cast in place concrete plate connects, and precast concrete is arranged between the I-steel girder bottom wing listrium of two of span centre region
Plate, the precast slab connect all lower flange WELDING STUDSs by cast-in-place wet seam, form closing box structure.
Using a kind of Novel steel-concrete composite beam bridge structure described in the utility model, entire load-carrying members are broken the whole up into parts,
Primary structural component is resolved into, convenient for manufacture, transport and installation, economic benefit and social benefit are significant, make using beam bottom concrete plate
For the bottom plate of box structure, whole structural stability, vertical rigidity and torsional rigidity are greatly strengthened, structure is attached in intermediate support
Beam bottom double combination section cast in place concrete plate is set within the scope of nearly certain distance, is partially formed the double-deck bondbeam, can effectively reduce this
Position girder plate thickness, and the position local compression stability is improved, to significantly improve structure hogging moment area stress performance, ensure
Structure is whole and local pressure safety, and the composite beam bridge structure is simple, applies conveniently, works well.
Preferably, along several diaphragm plates of bridge longitudinal direction spaced set between two I-steel girders.
Preferably, each diaphragm plate is in rectangular-ambulatory-plane structure.
Preferably, spaced set several vertical ribbed stiffeners in lateral edge bridge longitudinal direction in each I-steel girder.
Preferably, first longitudinal direction is arranged in side-lower in the I-steel girder web plate of each of described intermediate support region
Ribbed stiffener.
Preferably, each of described span centre region I-steel girder web plate inside front setting second longitudinal direction is put more energy into
Rib.
Using this structure setting, the second longitudinal direction that the first longitudinal direction ribbed stiffener in intermediate support region compares span centre region adds
Strength rib position is low, and when meeting bending resistance of the I-steel girder along bridge longitudinal direction, it is I-shaped that intermediate support region is also greatly improved
Steel girder local compression stability.
Preferably, each I-steel girder shears nail welding with corresponding all top flanges.
Preferably, each I-steel girder shears nail welding with corresponding all lower flanges.
Preferably, along several longitudinally disposed described precast slabs of bridge, the two sides of each precast slab
While being connected to the corresponding I-steel girder, beam bottom plate stitch is equipped between the two neighboring precast slab.
Using this structure setting, beam bottom precast slab along bridge be longitudinally it is discontinuous, on structure longitudinal direction not by
Power, it is only formal in structure section, structure entirety can be effectively improved in the upper stress of structure transverse direction as the bottom plate of box section
Property and stability.
Preferably, the bridge floor cast in place concrete plate replaces with bridge floor precast slab.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are:
1, with a kind of Novel steel-concrete composite beam bridge structure described in the utility model, it is by entire load-carrying membersization are whole
Zero, primary structural component is resolved into, convenient for manufacture, transport and installation, economic benefit and social benefit are significant, use beam bottom concrete plate
As the bottom plate of box structure, whole structural stability, vertical rigidity and torsional rigidity are greatly strengthened, structure is in intermediate support
Beam bottom double combination section cast in place concrete plate is set within the scope of neighbouring certain distance, is partially formed the double-deck bondbeam, can effectively reduce
The position girder plate thickness, and the position local compression stability is improved, to significantly improve structure hogging moment area stress performance, protect
It is whole safe with local pressure structure is hindered, the composite beam bridge structure is simple, applies conveniently, works well；
2, with a kind of Novel steel-concrete composite beam bridge structure described in the utility model, the intermediate support region it is every
First longitudinal direction ribbed stiffener is arranged in side-lower in a I-steel girder web plate, and each of described span centre region is described I-shaped
Second longitudinal direction ribbed stiffener is arranged in steel girder web plate inside front, using this structure setting, the first longitudinal direction in intermediate support region
The second longitudinal direction ribbed stiffener position that ribbed stiffener compares span centre region is low, is meeting I-steel girder along the bending resistance of bridge longitudinal direction
When, intermediate support region I-steel girder local compression stability is also greatly improved；
3, with a kind of Novel steel-concrete composite beam bridge structure described in the utility model, beam bottom precast slab is along bridge
Longitudinal direction be it is discontinuous, do not stress on structure longitudinal direction, it is only formal in structure section, as the bottom plate of box section, tying
The upper stress of structure transverse direction, can effectively improve structural integrity and stability.
Detailed description of the invention
Fig. 1 is a kind of elevational schematic view of Novel steel-concrete composite beam bridge structure described in the utility model；
Fig. 2 is the broken section top view of Fig. 1；
Fig. 3 is A-A cross-sectional view in Fig. 1；
Fig. 4 is B-B cross-sectional view in Fig. 1；
Fig. 5 is C-C cross-sectional view in Fig. 1.
Marked in the figure: 1- I-steel girder, the top flange 11- WELDING STUDS, the lower flange 12- WELDING STUDS, 2- bridge floor are cast-in-place mixed
Concrete board, 3- double combination section cast in place concrete plate, 4- precast slab, 41- beam bottom plate stitch, the cast-in-place wet seam of 5-, 6- tabula
Plate, the vertical ribbed stiffener of 7-, 8- first longitudinal direction ribbed stiffener, 9- second longitudinal direction ribbed stiffener.
Specific embodiment
The utility model is described in further detail below with reference to test example and specific embodiment.But it should not be by this
The range for being interpreted as the above-mentioned theme of the utility model is only limitted to embodiment below, all to be realized based on the content of the present invention
Technology belongs to the scope of the utility model.
Embodiment
As shown in Figs. 1-5, a kind of Novel steel described in the utility model-concrete composite beam bridge structure, including two set in parallel
The I-steel girder 1 of the 2.8m high set.
As in Figure 3-5, each 1 top flange plate of I-steel girder weld several top flange WELDING STUDSs 11, under
Flange plate inside upper surface welds several lower flange WELDING STUDSs 12, and two 1 top flange plates of I-steel girder pass through institute
There is the top flange WELDING STUDS 11 to connect with bridge floor cast in place concrete plate 2, cast in place concrete plate 2 the width 12.6m, thick 0.3m-
0.5m, two 1 lower flanges of I-steel girder of support region (at bearing along the longitudinal total 7m length range in front and back of bridge)
It is connected between plate by all lower flange WELDING STUDSs 12 and double combination section cast in place concrete plate 3, the double combination section is cast-in-place
3 thickness 0.15m of concrete slab, 1m range is locally thickeied to 0.3m, two I-shapeds in span centre region near steel girder web plate
Precast slab 4, the 4 thickness 0.15m of precast slab, the concrete are set between 1 bottom wing listrium of shape steel girder
Native plate 4 connects all lower flange WELDING STUDSs 12 by cast-in-place wet seam 5, forms the box structure of the wide 6m of fully sheathed case.
As shown in Figs. 1-2, a diaphragm plate 6 is arranged in the 8m that is longitudinally averaged between two I-steel girders 1 along bridge, often
A diaphragm plate 6 is in rectangular-ambulatory-plane structure；Lateral edge bridge is longitudinally averaged 4m setting one vertically in each I-steel girder 1
Ribbed stiffener 7.
As shown in Fig. 1,3-5, side-lower is arranged in 1 web of I-steel girder of each of described intermediate support region
First longitudinal direction ribbed stiffener 8, each of described span centre region 1 web inside front of I-steel girder setting second longitudinal direction add
Strength rib 9, using this structure setting, the second longitudinal direction that the first longitudinal direction ribbed stiffener 8 in intermediate support region compares span centre region adds
9 position of strength rib is low, and when meeting bending resistance of the I-steel girder 1 along bridge longitudinal direction, intermediate support region I-shaped is also greatly improved
1 local compression stability of shape steel girder.
As shown in Fig. 2, along several longitudinally disposed described precast slabs 4 of bridge, each precast slab 4
Two sides are connected to the corresponding I-steel girder 1, are equipped with beam bottom plate stitch between the two neighboring precast slab 4
41, using this structure setting, beam bottom precast slab 4 along bridge be longitudinally it is discontinuous, do not stress on structure longitudinal direction, only
It is formal in structure section, as the bottom plate of box section, in the lateral upper stress of structure, structural integrity and steady can be effectively improved
It is qualitative.
With a kind of Novel steel-concrete composite beam bridge structure described in the utility model, with general common opening fashioned iron-concrete
Composite beam bridge structure is compared, and structural steel amount is suitable, though structural concrete increases by 22%, structure tension performance is more preferable, main span
Mid-span deflection reduces, and whole vertical rigidity increases 12%, beam-ends corner and reduces 5%, steel girder Fatigue Stress Amplitude reduction 11%；With
General common closed type steel-concrete composite beams bridge structure is compared, under the conditions of meeting structure same stress performance, structural steel amount
29% is reduced, structural concrete increases by 22%, and steel cost is much higher than concrete, and final total cost will significantly reduce；It will be entire
Load-carrying members break the whole up into parts, and resolve into primary structural component, and convenient for manufacture, transport and installation, economic benefit and social benefit are significant, use
Bottom plate of the beam bottom concrete plate 4 as box structure, greatly strengthen whole structural stability, vertical rigidity and it is antitorque just
Beam bottom double combination section cast in place concrete plate 3 is arranged near the intermediate support, is partially formed bilayer for degree, structure within the scope of certain distance
Bondbeam can effectively reduce the position girder plate thickness, and improve the position local compression stability, so that it is negative to significantly improve structure
Moment of flexure area stress performance has ensured that structure is whole and local pressure is safe, and the composite beam bridge structure is simple, and structural elements is lighter,
Construction is more convenient, flexibly, quick, working measure expense and 10% can be reduced by facing facility expense greatly.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1. a kind of Novel steel-concrete composite beam bridge structure, which is characterized in that including two I-steel girders (1) disposed in parallel,
Each I-steel girder (1) top flange plate is equipped with several top flange WELDING STUDSs (11), bottom wing listrium inside upper surface
Equipped with several lower flange WELDING STUDSs (12), two I-steel girder (1) top flange plates pass through all top flanges
WELDING STUDS (11) is connect with bridge floor cast in place concrete plate (2), I-steel girder (1) bottom wing of two of intermediate support region
It is connected between listrium by all lower flange WELDING STUDSs (12) and double combination section cast in place concrete plate (3), span centre region
Precast slab (4) are set between two I-steel girder (1) bottom wing listriums, the precast slab (4) is logical
It crosses cast-in-place wet seam (5) and connects all lower flange WELDING STUDSs (12).
2. steel-concrete composite beams bridge structure according to claim 1, which is characterized in that two I-steel girders (1)
Between along several diaphragm plates (6) of bridge longitudinal direction spaced set.
3. steel-concrete composite beams bridge structure according to claim 2, which is characterized in that each diaphragm plate (6) is in Back Word
Shape structure.
4. steel-concrete composite beams bridge structure according to claim 1, which is characterized in that each I-steel girder (1)
Several vertical ribbed stiffeners (7) of interior lateral edge bridge longitudinal direction spaced set.
5. steel-concrete composite beams bridge structure according to claim 1, which is characterized in that each of described intermediate support region
Side-lower setting first longitudinal direction ribbed stiffener (8) in I-steel girder (1) web.
6. steel-concrete composite beams bridge structure according to claim 1, which is characterized in that each of described span centre region is described
Second longitudinal direction ribbed stiffener (9) are arranged in I-steel girder (1) web inside front.
7. steel-concrete composite beams bridge structure according to claim 1, which is characterized in that each I-steel girder (1)
It is welded with corresponding all top flange WELDING STUDSs (11).
8. steel-concrete composite beams bridge structure according to claim 1, which is characterized in that each I-steel girder (1)
It is welded with corresponding all lower flange WELDING STUDSs (12).
9. steel-concrete composite beams bridge structure according to claim 1, which is characterized in that longitudinally disposed described in several along bridge
The two sides of precast slab (4), each precast slab (4) are connected to the corresponding I-steel girder
(1), beam bottom plate stitch (41) are equipped between the two neighboring precast slab (4).
10. -9 described in any item steel-concrete composite beams bridge structures according to claim 1, which is characterized in that the bridge floor is cast-in-place mixed
Concrete board (2) replaces with bridge floor precast slab.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821764500.2U CN209066242U (en) | 2018-10-29 | 2018-10-29 | A kind of Novel steel-concrete composite beam bridge structure |
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| CN201821764500.2U CN209066242U (en) | 2018-10-29 | 2018-10-29 | A kind of Novel steel-concrete composite beam bridge structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235223A (en) * | 2018-10-29 | 2019-01-18 | 中铁二院工程集团有限责任公司 | A kind of Novel steel-concrete composite beam bridge structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235223A (en) * | 2018-10-29 | 2019-01-18 | 中铁二院工程集团有限责任公司 | A kind of Novel steel-concrete composite beam bridge structure |
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