CN110055872A - Prestressing force gradient in cross-section UHPC beam bridge - Google Patents
Prestressing force gradient in cross-section UHPC beam bridge Download PDFInfo
- Publication number
- CN110055872A CN110055872A CN201910383753.8A CN201910383753A CN110055872A CN 110055872 A CN110055872 A CN 110055872A CN 201910383753 A CN201910383753 A CN 201910383753A CN 110055872 A CN110055872 A CN 110055872A
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- web
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- section
- uhpc
- prestressing force
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- 239000011374 ultra-high-performance concrete Substances 0.000 title claims abstract description 45
- 238000005524 ceramic coating Methods 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 9
- 238000010276 construction Methods 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 239000004567 concrete Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 244000062793 Sorghum vulgare Species 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
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- 230000007613 environmental effect Effects 0.000 description 2
- 238000009408 flooring Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000019713 millet Nutrition 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 241001282153 Scopelogadus mizolepis Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 229910001653 ettringite Inorganic materials 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
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- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- 238000003756 stirring Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D1/00—Bridges in general
-
- 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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
Abstract
The present invention relates to a kind of prestressing force gradient in cross-section UHPC beam bridges, including superstructure, substructure and the support being arranged between superstructure, substructure；Web of the superstructure by bottom plate and positioned at bottom plate two sides is constituted, and the superstructure is that cross section is U-shaped integral structure and forms using UHPC is prefabricated that the web is equipped with prestress pipe.Use bottom plate different as supporting member from traditional beam bridge structure, girder of the present invention uses U-shaped beam, and web is placed in bridge floor or more, make vertical web as supporting member, the building height of bottom plate can be made to substantially reduce in this way, and lightweight, convenient for prefabricated, transport and lifting.
Description
Technical field
The present invention relates to a kind of prestressing force gradient in cross-section UHPC beam bridges, belong to technical field of bridge construction.
Background technique
Beam bridge is the bridge of main supporting member with beam, and at present in bridge construction, the prefabricated bridge of beam bridge is generallyd use
The structure type of I-beam, π ellbeam or plate-girder, I-beam, π ellbeam or plate-girder mostly use reinforced concrete structure, have structure
Weight lays particular stress on (from great), is unfavorable for transport, hoisting difficulty is larger etc. the shortcomings that not can avoid.In addition, during on-site construction, in advance
It is both needed to that each beam or plate are connected as entirety by way of cast-in-place wet seam between floorings processed, it is common practice that be arranged in bridge
Upper and lower level reinforcing bar in panel stretches out certain length outside prefabricated bridge end, and the upper and lower level reinforcing bar of sponson can be made into
Integrally closed type, to guarantee that cast-in-place wet seam connects the reliability of stress, the protruding bar of general adjacent floorings needs tight mutually
It leans on and welds together (the unilateral protruding bar up to 200 or more-on actually one common beam), so numerous steel
Muscle is both needed to position successfully, proposes very high requirement to the precision of big scale of construction structure hoisting, hoisting process reinforcing bar phase often occurs
Mutually collision fracture in addition prefabricated bridge collided by reinforcing bar after the diseases problem such as arrisdefect defect, influence architecture quality, and scene
The human cost investment of a large amount of welder is needed, therefore the construction period at scene is longer.
Summary of the invention
The invention solves technical problems to be: providing one kind can save that steel bar piece and structure are simple, the site operation period is short
Prestressing force gradient in cross-section UHPC beam bridge.
In order to solve the above-mentioned technical problem, technical solution proposed by the present invention is: a kind of prestressing force gradient in cross-section UHPC beam
Bridge, including superstructure, substructure and the support being arranged between superstructure, substructure；The superstructure by
Bottom plate and positioned at bottom plate two sides web constitute, the superstructure be cross section be U-shaped integral structure and use
UHPC is prefabricated to be formed, and the web is equipped with prestress pipe.
UHPC(ultra-high performance concrete) be have superhigh intensity, high tenacity, low porosity ultra-high-strength cement-based composites.
Its basic principle is: by improve component fineness and activity, do not use coarse aggregate, make inside configuration defect (gap and
Microcrack) it is minimized, to obtain superhigh intensity and high-durability.
The present invention makes full use of the excellent properties of UHPC, eliminates reinforcing bar etc., also avoids steel bar corrosion bring peace
Full hidden danger.The present invention uses bottom plate as holding by using the prefabricated superstructure being integrated of UHPC, with traditional beam bridge structure
It is different to reconstruct part, girder of the present invention uses U-shaped beam, and web is placed in bridge floor or more, and make vertical web as supporting member, this
Sample can be such that the building height of bottom plate substantially reduces, and more conventional beam bridge building height reduces by 70%~80%, for example as overpass
When the most thin reachable 20cm of bottom plate, and conventional armored concrete overline bridge thickness can thus reduce pedestrian usually at 1 meter or more
It creeps the height of overline bridge.
Meanwhile structural elements size is all substantially to reduce in the present invention, and lightweight, convenient for prefabricated, transport and lifting.
Compared with the steel bridge of same span, due to using concrete structure, the rigidity of structure is larger, and natural frequency of structures is easily met rule
Model requirement, no setting is required damper also avoid the maintenance of later period damper.
In addition, by adjusting match ratio, UHPC can be made into entire body different colors (such as white, red, grey, etc.
Deng), accomplish inside and outside solid colour, concrete surface avoids ordinary concrete member and steel structure without oil paint coating is used
The part outer surface coating later period is easy the problem of peeling off, and is truly realized non-maintaining.
Compared with conventional concrete beam bridge, UHPC beam bridge has higher ultimate strength, rigidity and cracking resistance.Do not having
In the case where stirrup, the excellent shock resistance of UHPC beam slab, UHPC fine strain of millet only generates many tiny cracks under impact load,
Ductility bending failure occurs.Compared with normal concrete beam bridge, UHPC beam bridge can not only biggish reduction structural elements size, mix
Solidifying soil dosage reduces nearly 2/3, but also can reduce the ratio of reinforcement of structural elements, it might even be possible to fully phase out reinforcing bar.And have
The steel construction of same bearing capacity is compared, and the cost of UHPC structure is also relatively cheap, since the durability of UHPC is more preferable, service life
It can be longer.
Compared with steel construction beam bridge, the advantage of UHPC beam bridge structure is high-durability and almost without maintenance cost, with
Traditional rc beam bridge structure is compared, and the UHPC beam bridge structure service life can significantly improve.According to theory analysis, existing sudden and violent
Dew test and Practical Project inspection result, it is contemplated that UHPC structural life-time can achieve in non-corrosive environment (such as urban architecture)
1000, under normal use environmental condition, the design working life of UHPC structure was more than 100 years.
The further improvement of above-mentioned technical proposal is: the intermediate height of the web, both ends are low, become its cross section in gradient
Change.The present invention by above-mentioned improvement, with it is conventional get higher beam on the contrary, using bridge floor under, camber line is in the side of upper (upward circular arc line)
Case, it is not only handsome in appearance, sense of depression of pedestrian's walking on bridge floor is reduced, and more meet mechanical characteristic, i.e., span centre is curved
Square maximum, smallest shearing force, web takes thin herein, and the deck-molding of web takes large values；Two end shear of web is big, and moment of flexure is small, and web thickeies,
The deck-molding of web gets the small value.Preferably, the cross section of the web is in I-shaped.
In view of the special material performance of UHPC, web thickness is reduced more than half, and structure seems more frivolous.Cause
The further improvement of this above-mentioned technical proposal is: in addition railing is not arranged in bridge, and in the web top surface of variable cross-section, setting is got higher
It spends railing and has both saved bridge floor space so that railing is combined into one with web, while also forming one of unique scenery line.
Preferably, it is contemplated that web height is 40~80cm, and pedestrian's walking crystalistic sense between two blocks of webs is slightly worse, and also to drop
Low big face block bring dullness sense, the present invention, which is used, opens up hole on web to increase the crystalistic sense of structure, while also dashing forward
The slim of web is gone out.
There are two types of preferred embodiments for the railing, and one is use UHPC to be made, and prefabricated for integrated knot with web
Structure, another is made of using metal, and the periphery of the railing is coated with ceramic coating.Ceramic coating refers to coating material for pottery
The spray coating of porcelain, the materials such as main ingredient silica, calcium oxide, magnesia, titanium oxide, aluminium oxide, sodium oxide molybdena.
Ceramic coating is the general name for being covered on the inorganic protective layer or film of substrate surface, it can change the pattern of matrix surface, structure and
The composition of its chemical component, while but also base material has wear-resisting, corrosion-resistant, anti-sticking, high rigidity, high temperature resistant, insulation etc.
Feature.Ceramic coating has very big owe relative to traditional paint it may be said that changing the utilization pattern of many coating in environmental protection
It lacks, ceramic coating is environment-protecting and non-poisonous.Secondly, ceramic coating have acid-alkali-corrosive-resisting, salt spray resistance, heatproof it is high, it is wear-resisting, prevent it is dirty, insulate
The features such as.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings.
Fig. 1 is the structural schematic diagram of the embodiment of the present invention.
Fig. 2 is A-A in Fig. 1 to schematic cross-section.
Appended drawing reference: superstructure 1, substructure 2, support 3, bottom plate 4, web 5, railing 6, ladder access 7, hole 8.
Specific embodiment
Embodiment
The present embodiment is illustrated by taking an overpass in certain city as an example, since the bridge location is in urban central zone, is
Reduce the influence to urban transportation, therefore using the bridge that is prefabricated in the factory, the form of construction work of live integral hoisting installation.
As depicted in figs. 1 and 2, intermediate beam bridge of the prestressing force gradient in cross-section UHPC beam bridge of the present embodiment as overline bridge, packet
Include superstructure 1, substructure 2 and the support 3 being arranged between superstructure 1, substructure 2；The superstructure 1 by
Bottom plate 4 and web 5 positioned at 4 two sides of bottom plate are constituted, and the superstructure 1 is that cross section is U-shaped integral structure and to adopt
It is formed with UHPC is prefabricated, the web 1 is equipped with prestress pipe (not shown).The intermediate beam bridge two sides of overline bridge are additionally provided with
Prior art, such as steel construction ladder access etc. can be used in ladder access 7, ladder access 7, and substructure 2 and support 3 are also the prior art, can be joined
Pertinent literature is examined, is repeated no more.
The present embodiment can pass through the thickness for reducing U-shaped fine strain of millet web and bottom plate by the very-high performance using UHPC, maximum
The reduction dead load of degree, it is final to reduce lifting weight, and have the advantages that high-durability and almost non-maintaining.
UHPC does not have the problem of Frozen-thawed cycled, alkali-aggregate reaction (AAR) and delayed ettringite formation (DEF) destroy；In nothing
Crack state, the endurance qualities such as the anti-carbonation of UHPC, resisting chloride ion penetration intrusion, resisting erosion of sulfate, resist chemical, wear-resisting refer to
Mark, compared with traditional high-strength high-performance concrete, there is the raising of the order of magnitude or multiple.
UHPC has extraordinary microcrack self-healing ability.Since water-cement ratio is very low, UHPC mixes and stirs water and is only capable of for portion
Divide hydrated cementitious.The inside of most cement granules is in no hydrated state.Therefore, water or steam enter splitting for UHPC
Seam, the unhydrated part of cement granules for being exposed to fracture faces " will continue " aquation；Combine the hydrated product of outside moisture
Volume is greater than clinker volume, and extra volume can cram crack, and test and engineering verification show the crack of UHPC certainly
More microcrack, which can not only be closed, to be reduced permeability and keeps good durability, while also playing " cementing " crack, can be one
Determine to restore the mechanical property that concrete is reduced by crack in degree.
UHPC beam bridge can be made into different colors other than with the above excellent properties, on the basis of white products,
It can be made into a variety of different colors, and customizable special color by the proportion of different materials, avoid normal concrete structure
Part and steel member outer surface coating later period are easy the problem of peeling off, and are truly realized non-maintaining.
The present embodiment can also make following improve:
1) as shown in Figure 1, the intermediate high of the web 5, both ends are low, change its cross section in gradient.By above-mentioned improvement, originally
The facade configuration of embodiment is circular arc type, and using bridge floor under, camber line is in upper structure type, i.e., the centre of the described web
Height, both ends are low, change its cross section in gradient.And conventional bridge using circular arc line is mostly Loads of Long-span Bridges, such as: (1) greatly across
Variable cross-section continuous beam, using bridge floor in upper, camber line (upward circular arc line) under；(2) large span T beam, using bridge floor in upper, arc
Line (downward circular arc line) under.The circular arc type structure of the present embodiment obviously more meets mechanical characteristic, i.e., mid span moment is maximum, shears
Minimum, web takes thin herein, and the deck-molding of web takes large values；Two end shear of web is big, and moment of flexure is small, and web thickeies, the deck-molding of web
It gets the small value.This makes it possible to save material on the basis of ensuring compliance with force request, and it is handsome in appearance.
Preferably, the cross section of the web is in I-shaped.
2) there are two types of preferred embodiments for railing 6, and one is use UHPC to be made, and prefabricated for integrated knot with web 5
Structure, another is made of using metal, and the periphery of the railing 6 is coated with ceramic coating.
3) web 5 is equipped with several holes 8.Increase the crystalistic sense of structure, while material can be saved.
The present invention is not limited to the above embodiment the specific technical solution, and in addition to the implementation, the present invention may be used also
To there is other embodiments.For those skilled in the art, all within the spirits and principles of the present invention, made
The technical solution of the formation such as what modification, equivalent replacement, improvement, should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of prestressing force gradient in cross-section UHPC beam bridge, including superstructure, substructure and setting are in superstructure, lower part
Support between structure；It is characterized by: web of the superstructure by bottom plate and positioned at bottom plate two sides is constituted, it is described on
Portion's structure is that cross section is U-shaped integral structure and forms using UHPC is prefabricated that the web is equipped with prestress pipe.
2. prestressing force gradient in cross-section UHPC beam bridge according to claim 1, it is characterised in that: the intermediate height of the web,
Both ends are low, change its cross section in gradient.
3. prestressing force gradient in cross-section UHPC beam bridge according to claim 1, it is characterised in that: the top of the web is equipped with
Railing.
4. prestressing force gradient in cross-section UHPC beam bridge according to claim 1, it is characterised in that: the web is equipped with several
Hole.
5. prestressing force gradient in cross-section UHPC beam bridge according to claim 3, it is characterised in that: the railing uses UHPC system
At, and with web is prefabricated is integrated.
6. prestressing force gradient in cross-section UHPC beam bridge according to claim 3, it is characterised in that: the railing uses made of metal
At the periphery of the railing is coated with ceramic coating.
7. prestressing force gradient in cross-section UHPC beam bridge according to claim 1 or 2, it is characterised in that: the web it is cross-section
Face is in I-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910383753.8A CN110055872A (en) | 2019-05-08 | 2019-05-08 | Prestressing force gradient in cross-section UHPC beam bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910383753.8A CN110055872A (en) | 2019-05-08 | 2019-05-08 | Prestressing force gradient in cross-section UHPC beam bridge |
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| Publication Number | Publication Date |
|---|---|
| CN110055872A true CN110055872A (en) | 2019-07-26 |
Family
ID=67322683
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910383753.8A Pending CN110055872A (en) | 2019-05-08 | 2019-05-08 | Prestressing force gradient in cross-section UHPC beam bridge |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111729618A (en) * | 2020-07-22 | 2020-10-02 | 中国石油化工股份有限公司 | Equal-stress supporting beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000345515A (en) * | 1999-06-07 | 2000-12-12 | Pc Bridge Co Ltd | High-strength light composite girder bridge and construction method therefor |
| CN104831617A (en) * | 2015-05-26 | 2015-08-12 | 福州大学 | Steel-super high performance concrete composite beam based on ribbed plate type bridge deck and construction method |
| KR20160127234A (en) * | 2015-04-24 | 2016-11-03 | 한국철도기술연구원 | U-type girder of lower route bridge for decreasing noise, and construction method for the same |
| CN109057148A (en) * | 2018-09-29 | 2018-12-21 | 中路杜拉国际工程股份有限公司 | Ultra-high performance concrete is without regular reinforcement Prestressed U type beam and its construction method |
| CN210117638U (en) * | 2019-05-08 | 2020-02-28 | 江苏东南结构防灾工程有限公司 | UHPC beam bridge with prestress gradient section |
-
2019
- 2019-05-08 CN CN201910383753.8A patent/CN110055872A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000345515A (en) * | 1999-06-07 | 2000-12-12 | Pc Bridge Co Ltd | High-strength light composite girder bridge and construction method therefor |
| KR20160127234A (en) * | 2015-04-24 | 2016-11-03 | 한국철도기술연구원 | U-type girder of lower route bridge for decreasing noise, and construction method for the same |
| CN104831617A (en) * | 2015-05-26 | 2015-08-12 | 福州大学 | Steel-super high performance concrete composite beam based on ribbed plate type bridge deck and construction method |
| CN109057148A (en) * | 2018-09-29 | 2018-12-21 | 中路杜拉国际工程股份有限公司 | Ultra-high performance concrete is without regular reinforcement Prestressed U type beam and its construction method |
| CN210117638U (en) * | 2019-05-08 | 2020-02-28 | 江苏东南结构防灾工程有限公司 | UHPC beam bridge with prestress gradient section |
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| Title |
|---|
| 邵旭东;曹君辉;: "面向未来的高性能桥梁结构研发与应用", 建筑科学与工程学报, no. 05, pages 41 - 58 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111729618A (en) * | 2020-07-22 | 2020-10-02 | 中国石油化工股份有限公司 | Equal-stress supporting beam |
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