CN208395634U - A kind of wood-ultra-high performance concrete combined bridge structure - Google Patents
A kind of wood-ultra-high performance concrete combined bridge structure Download PDFInfo
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- CN208395634U CN208395634U CN201820717996.1U CN201820717996U CN208395634U CN 208395634 U CN208395634 U CN 208395634U CN 201820717996 U CN201820717996 U CN 201820717996U CN 208395634 U CN208395634 U CN 208395634U
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Abstract
The utility model discloses a kind of wood-ultra-high performance concrete combined bridge structures, the Prefabricated composite beam element being set side by side including two or more along bridge lateral, Prefabricated composite beam element includes two or more the wooden frames longitudinally extended along bridge and the ultra-high performance concrete floorings that are set on wooden frame, wooden frame is fixedly connected with ultra-high performance concrete floorings by shear key, wooden frame and ultra-high performance concrete floorings are provided with crossbeam at the both ends of bridge longitudinal direction, the two sides of wooden frame are provided with external prestressing steels, and the both ends of external prestressing steels are anchored in crossbeam；Two neighboring Prefabricated composite beam element docks at ultra-high performance concrete floorings, and the cast-in-place seam longitudinally extended along bridge is set at docking location.The wood of the utility model-ultra-high performance concrete combined bridge structural behaviour is excellent, and from heavy and light, endurance quality is good, material is environmentally friendly, assembling degree is high, transport and easy for installation, meets green energy conservation and the great demand of building industrialization.
Description
Technical field
The utility model relates to technical field of bridge engineering more particularly to a kind of wood-ultra-high performance concrete combined bridges
Structure.
Background technique
Timber is one of the construction material that the mankind use earliest in bridge construction.China was just built early in B.C. 1135
At Weihe River wood pontoon bridge, the Song Dynasty has Kaifeng water Hongqiao, Guangxi has shelter bridge, Fujian Zhejiang has and compiles many timber structures such as timber arch bridge
Bridge.In 20th century, as steel, cement become primary building material, the development of timber structure bridge sinks into stagnate.Nearly 40 years
Come, with the processing of modern wood products, the fast development of protection and interconnection technique, modern wood structure bridge is in developed countries such as America and Europes
Start to be used widely.According to the incomplete statistics of document, in the U.S., span is more than in the bridge of 6m, and having 12% is timber structure bridge
Beam, sum is more than 70000；Mileage is more than that the timber structure bridge of 2400km uses in the railway system；Timber structure bridge is
It is widely used among the country road of the highway bridge of medium and small span, especially inferior grade.In the states such as Canada, Japan, wood
Structural bridge is also early widely used.China lags behind European and American developed countries to the research of timber structure bridge at present, lacks corresponding
Technique standard and criterion, only built several modern wood structure bridges on Hunan, Zhejiang, Shanghai and other places.
It is energy consumption and environmental pollution rich and influential family with the manufacturing industry that steel, cement become primary building material, China produces thick
Steel accounts for the half of global yield, and steel and iron industry energy consumption is the 15% of national energy consumption；The cement of production accounts for the 60% of global yield, consumption
More than 100,000,000 tons of standard coal, year discharges more than 8.5 hundred million tons of carbon dioxide.These high energy consumptions, high pollution are seriously polluted to constrain China its people
Economic sustainable development.As being constantly progressive for society emerges various each with economic fast development, science of bridge building industry
The bridge structure of sample type.From the perspective of sustainable development, from build a resource-conserving society, in bridge type design
Using low-carbon, environmental protection, green, economy building materials, being building operation, person need be top-priority, and timber is as environment-friendly material
Receive the highest attention of people, compared to Reinforced Concrete Materials, timber with its have renewable, the high and low energy consumption of strong ratio,
Impact resistance is easily decomposed, the features such as elasticity is good, easy processing, is valued by people again in building materials selection.
Currently, the configuration of UHPC, production, construction and prefabricating technique have tended to be mature, the application in bridge structure is constantly
It makes further progress, the type of bridge using UHPC material is more and more, but from the point of view of it can read up the literature, both at home and abroad for wood-UHPC
The research for the composite structure that two kinds of materials combine is rarely reported.With being on the rise for environmental problem, the lightness of bridge and
Sustainable development has been to be concerned by more and more people.Comprehensively consider structure tension performance, stock utilization, speed of application, economy
The factors such as benefit, wood-concrete combined structure is as the novel knot developed on the basis of timber structure and concrete structure
Structure can give full play to the tensile property of timber and the compressive property of concrete, at the same have it is environmentally protective, reduce carbon emission, be suitable
In the industrialization development the advantages that.But concrete structure is from great, and the discreteness of timber is big, structural strength and rigidity are relatively small,
How two kinds of biggish materials of property difference to be combined together, play respective advantage, overcomes respective disadvantage, and how
The bonding strength for improving two kinds of materials becomes wood-concrete combined structure a great problem,
Utility model content
The utility model provides a kind of full prefabricated wood-very-high performance to overcome the problems, such as to mention in background above technology
Concrete composite bridge structure, the structure can substantially reduce the self weight of beam body, so as to improve thus bring downwarp situation, together
When, ultra-high performance concrete compression strength is higher compared with normal concrete, and tensile property is also more excellent, and structure overall stiffness can be improved
And span ability.Specific technical solution is as follows.
A kind of wood-ultra-high performance concrete combined bridge structure is set side by side including two or more along bridge lateral pre-
Composite beams processed, the Prefabricated composite beam element include two or more the wooden frames longitudinally extended along bridge and are set to described
Ultra-high performance concrete floorings on wooden frame, the wooden frame and the ultra-high performance concrete floorings are fixed by shear key
Connection, the wooden frame and the ultra-high performance concrete floorings are provided at the both ends of bridge longitudinal direction and extend along bridge lateral
Crossbeam, the two sides of the wooden frame are provided with external prestressing steels, and the both ends of the external prestressing steels are anchored at the cross
In beam；The two neighboring Prefabricated composite beam element docks at ultra-high performance concrete floorings, set at docking location along
The cast-in-place seam that bridge longitudinally extends.Wherein, longitudinal length direction for bridge is laterally the width direction of bridge.
Further, the bottom of the ultra-high performance concrete floorings has longitudinal rib and/or cross rib；Subtracting in this way
While light ultra-high performance concrete floorings weight, the intensity of ultra-high performance concrete floorings ensure that.
Further, the shear key is the steel plate extended along the wooden frame length direction (bridge is longitudinal), the steel
A part of plate is arranged in the wooden frame, and another part is arranged in the ultra-high performance concrete floorings, is provided with
Steel plate in the ultra-high performance concrete floorings has engraved structure.By the way that the shear key of such form is arranged, it is convenient for
The circulation of ultra-high performance concrete guarantees the globality of ultra-high performance concrete floorings and wooden frame, improves wooden frame and bridge floor
The bonding strength of plate.
Further, the crossbeam is made of ultra-high performance concrete, and anchoring has junction steel plate in the crossbeam, described
Junction steel plate is for anchoring the external prestressing steels.Wherein, the crossbeam also uses shear key to connect with the wooden frame, shearing
Part is steel plate, and a part of steel plate is located in the wooden frame, and another part is located in the crossbeam, is provided in crossbeam
Steel plate has engraved structure.
Further, muti-piece wood diaphragm, and muti-piece are set between adjacent two wooden frames of the Prefabricated composite beam element
The wooden diaphragm is arranged along bridge longitudinal gap.The integral strength for being conducive to improve wooden frame in this way, improves the stability of bridge.
Further, connection reinforcing bar is extend into the ultra-high performance concrete floorings of two neighboring Prefabricated composite beam element
In the cast-in-place seam, the longitudinal reinforcement longitudinally disposed along bridge, the longitudinal reinforcement and institute are additionally provided in cast-in-place seam
State the binding of connection reinforcing bar together.It so can greatly improve the intensity of cast-in-place seam.
Further, the ultra-high performance concrete floorings of the Prefabricated composite beam element connect with the cast-in-place seam
End face has the floor that longitudinally extends along bridge, the floor have along bridge longitudinally extend to ultra-high performance concrete bridge
The groove of panel itself recess, the cast-in-place seam is between corresponding two floors.
Further, the single span across footpath of the Prefabricated composite beam element is 20-40m.
Utility model has the advantages that 1. use the UHPC of high-strength and high-ductility as floorings, and floorings are band
The construction of rib thin plate, which has taken into account the intensity and rigidity of structure, compared with traditional structure, significantly reduces self weight, improves
The span ability of bridge, while enhancing the durability of structure；2. being applied with longitudinal prestressing on wooden frame, substantially increase
The cracking resistance of timber structure；3. Prefabricated composite beam element need to can only construct at the scene longitudinal show in the integral prefabricated completion of factory
Pour seam, it is ensured that component production quality, and substantially mitigate work on the spot intensity, in lifting construction efficiency, shorten construction week
There is greater advantage on phase；4. wood-ultra-high performance concrete combined bridge dead load is light, timber damping performance is good, can reduce
The scale of substructure has excellent anti-seismic performance；5. when technique and market-ripe, wood-ultra-high performance concrete combination
The construction cost of bridge structure can be lower than Reinforced Concrete Bridge；6. timber structure is convenient for the replacement of component, easy to maintain, have good
Good adaptability.
To sum up, the wood of the utility model-ultra-high performance concrete combined bridge structural behaviour is excellent, from heavy and light, durability
Can it is good, material is environmentally friendly, assembling degree is high, transport and easy for installation, meet green energy conservation and the great demand of building industrialization.It should
Structure is suitable for the construction of city small bridge, can be used for freely-supported or continuous system bridge, has broad application prospects.
Detailed description of the invention
Fig. 1 is wood-ultra-high performance concrete combined bridge structure schematic view of the front view；
Fig. 2 is the overlooking structure diagram of structure shown in Fig. 1 (lower part is divided into cross-sectional view, and top is divided into top view)；
Fig. 3 is in Fig. 1 I-I to schematic cross-sectional view；
Fig. 4 is in Fig. 1 II-II to schematic cross-sectional view；
Fig. 5 is the schematic diagram of shear key steel plate.
In figure: 1- floorings, 2- crossbeam, 3- wooden frame, 4- wood diaphragm, 5- external prestressing steels, the cast-in-place seam of 6-, 7-
Shear key.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
Referring to Fig. 1-5, the full prefabricated wood of the present embodiment-ultra-high performance concrete combined bridge structure, including two along bridge
The Prefabricated composite beam element laterally docked, Prefabricated composite beam element are mixed by double wooden frames 3 and the very-high performance being supported on wooden frame
Floorings 1 are integral prefabricated forms for solidifying soil, and apply external prestressing steels, and double wooden frames 3 are longitudinally arranged in parallel along bridge
Two rectangle wooden frames, floorings 1 are the thin plate that lower part has longitudinal rib and cross rib, in wooden frame 3 and floorings 1 longitudinal two
End arranges that cast-in-place ultra-high performance concrete crossbeam 2, wooden frame 3 and floorings 1 are fixedly connected using shear key 7, external pre-
Stress rib 5 is arranged in 3 two sides of wooden frame, and the junction steel plate (not shown) being anchored on crossbeam 2, external prestressing steels 5 both may be used
Give conveniently, being also highly resistant to the pressure that wooden frame tension is transmitted on crossbeam to apply external prestressing, plays very-high performance
Concrete is better than the compressive property of conventional concrete.Two adjacent Prefabricated combined beam units dock at floorings 1, docking location
Place sets cast-in-place seam 6, and reinforcing bar extends in cast-in-place seam 6 as connection reinforcing bar in floorings 1.
Narrow slot is longitudinally opened along bridge in 3 top of wooden frame, and steel plate is embedding wherein as shear key 7, and the setting of steel plate top is engraved
Emptying aperture, steel plate top are located in floorings 1, and hollow hole is convenient for the circulation of ultra-high performance concrete, and lower part total cross-section is fixedly arranged at wood
In beam 3, to guarantee that ultra-high performance concrete floorings and wooden frame form entirety；The connection type and bridge floor of crossbeam 2 and wooden frame 3
Plate 1 is identical with the connection type of wooden frame 3.
The settable span quartile of the wooden diaphragm 4(and span centre point are arranged along bridge longitudinal gap between double wooden frames), increase wood
Lateral stiffness between beam.
The connection reinforcing bar that two neighboring Prefabricated composite beam element stretches out is in cast-in-place seam crossing and is arranged in cast-in-place seam
Longitudinal reinforcement binding, can contribute to the promotion of the longitudinally connected intensity of bridge.
The end face that the ultra-high performance concrete floorings of Prefabricated composite beam element connect with the cast-in-place seam has along bridge
The floor that beam longitudinally extends, floor have along bridge longitudinally extend to the recessed of ultra-high performance concrete floorings inner recess
Slot, the cast-in-place seam is between corresponding two floors.
The beam section longitudinal length of Prefabricated composite beam element is 31.7m, transverse width 7.2m in the present embodiment.At other
In embodiment, longitudinal length maximum visual concrete condition selects within the scope of 0-40m.
The wood of the present embodiment-ultra-high performance concrete combined bridge structure construction method, mainly comprises the steps that
1) it, makes wooden frame 3 and the wooden diaphragm 4, and wooden frame 3 and the wooden diaphragm 4 is linked as a whole structure, in wooden frame
Longitudinal narrow slot is opened at 3 tops, opens up end narrow slot in two ends of wooden frame 3, shear key 7 is embedded into longitudinal narrow slot and end is narrow
In slot, binder-treatment is done；
2), in the top of wooden frame 3 and end formwork arrangement of reinforcement, junction steel plate is set in the end of wooden frame 3, then pours superelevation
Performance concrete carries out the high temperature steam curing between 90 DEG C -100 DEG C of temperature, prefabricated group after the completion of maintenance after initial set to it
Beam element is closed to complete；
3), in the two sides tensioning external prestressing steels 5 of wooden frame 3, the both ends of external prestressing steels 5 are anchored at crossbeam 2 respectively
Interior junction steel plate；
4), hoisting prefabricated composite beams, two neighboring Prefabricated composite beam element is at ultra-high performance concrete floorings 1
It docks, there are the reinforcing bars extended in cast-in-place seam 6 in Prefabricated combined beam unit floorings 1 as connection reinforcing bar, connects cast-in-place
Longitudinal reinforcement is arranged in seam and binds after-pouring ultra-high performance concrete, 90 DEG C -100 DEG C of high temperature steam curing is carried out, wait support
Shield reaches demoulding after requirement, completes the production of full prefabricated wood-ultra-high performance concrete combined bridge structure.
The embodiments of the present invention are described above in conjunction with attached drawing, in the absence of conflict, this is practical new
The feature in embodiment and embodiment in type can be combined with each other.For sake of convenience, the "upper" that above occurs, "lower" word
Sample only indicates consistent with the upper and lower direction of attached drawing itself, does not play restriction effect to structure.The utility model is not limited to
Above-mentioned specific embodiment, the above mentioned embodiment is only schematical, rather than limitation, this field it is general
Logical technical staff is not departing from the utility model aims and scope of the claimed protection feelings under the enlightenment of the utility model
Under condition, many forms can be also made, these are belonged within the protection scope of the utility model.
Claims (8)
1. a kind of wood-ultra-high performance concrete combined bridge structure, it is characterised in that: arranged side by side along bridge lateral including two or more
The Prefabricated composite beam element of setting, the Prefabricated composite beam element include two or more the wooden frames longitudinally extended along bridge (3)
With the ultra-high performance concrete floorings (1) being set on the wooden frame (3), the wooden frame (3) and the very-high performance coagulation
Native floorings (1) are fixedly connected by shear key (7), and the wooden frame (3) and the ultra-high performance concrete floorings (1) are in bridge
The both ends of beam longitudinal direction are provided with the crossbeam (2) extended along bridge lateral, and the two sides of the wooden frame (3) are provided with answers in advance in vitro
Power muscle (5), the both ends of the external prestressing steels (5) are anchored in the crossbeam (2)；The two neighboring Prefabricated combined beam list
Member is docked at ultra-high performance concrete floorings (1), and the cast-in-place seam (6) longitudinally extended along bridge is set at docking location.
2. a kind of wood according to claim 1-ultra-high performance concrete combined bridge structure, which is characterized in that described super
The bottom of high performance concrete floorings (1) has longitudinal rib and/or cross rib.
3. a kind of wood according to claim 1-ultra-high performance concrete combined bridge structure, which is characterized in that described to cut
Power part (7) is the steel plate extended along the wooden frame length direction, and a part setting of the steel plate is interior in the wooden frame (3),
Another part setting is provided in the ultra-high performance concrete floorings (1) in the ultra-high performance concrete bridge floor
Steel plate in plate (1) has engraved structure.
4. a kind of wood according to claim 1-ultra-high performance concrete combined bridge structure, which is characterized in that the cross
Beam (2) is made of ultra-high performance concrete, and anchoring has junction steel plate in the crossbeam, and the junction steel plate is described for anchoring
External prestressing steels (5).
5. a kind of wood according to claim 1-ultra-high performance concrete combined bridge structure, which is characterized in that described pre-
Muti-piece wood diaphragm (4) are set between adjacent two wooden frames (3) of composite beams processed, and muti-piece wood diaphragm (4) is along bridge
Longitudinal gap arrangement.
6. a kind of wood according to claim 1-ultra-high performance concrete combined bridge structure, which is characterized in that adjacent two
Connection reinforcing bar is extend into the cast-in-place seam (6) in the ultra-high performance concrete floorings (1) of a Prefabricated composite beam element, existing
It pours and is additionally provided with the longitudinal reinforcement longitudinally disposed along bridge in seam (6), the longitudinal reinforcement and connection reinforcing bar binding
Together.
7. a kind of wood according to claim 1-ultra-high performance concrete combined bridge structure, which is characterized in that described pre-
The end face that the ultra-high performance concrete floorings (1) of composite beams processed connect with the cast-in-place seam (6) has vertical along bridge
To the floor of extension, the floor have along bridge longitudinally extend to the recessed of ultra-high performance concrete floorings inner recess
Slot, the cast-in-place seam is between corresponding two floors.
8. a kind of wood according to claim 1-ultra-high performance concrete combined bridge structure, which is characterized in that described pre-
The single span across footpath of composite beams processed is 20-40m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820717996.1U CN208395634U (en) | 2018-05-15 | 2018-05-15 | A kind of wood-ultra-high performance concrete combined bridge structure |
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| CN201820717996.1U CN208395634U (en) | 2018-05-15 | 2018-05-15 | A kind of wood-ultra-high performance concrete combined bridge structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425313A (en) * | 2018-05-15 | 2018-08-21 | 中南林业科技大学 | A kind of wood-ultra-high performance concrete combination beam and its construction method |
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2018
- 2018-05-15 CN CN201820717996.1U patent/CN208395634U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425313A (en) * | 2018-05-15 | 2018-08-21 | 中南林业科技大学 | A kind of wood-ultra-high performance concrete combination beam and its construction method |
| CN108425313B (en) * | 2018-05-15 | 2024-04-26 | 中南林业科技大学 | Wood-ultra-high performance concrete composite beam and construction method thereof |
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