CN101550675B - Corrugated steel ventral shield preflex composite beam and construction method thereof - Google Patents
Corrugated steel ventral shield preflex composite beam and construction method thereof Download PDFInfo
- Publication number
- CN101550675B CN101550675B CN2009100264969A CN200910026496A CN101550675B CN 101550675 B CN101550675 B CN 101550675B CN 2009100264969 A CN2009100264969 A CN 2009100264969A CN 200910026496 A CN200910026496 A CN 200910026496A CN 101550675 B CN101550675 B CN 101550675B
- Authority
- CN
- China
- Prior art keywords
- steel plate
- corrugated steel
- composite beam
- ventral shield
- flange steel
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The invention relates to a bridge composite beam structure, in particular to a corrugated steel ventral shield preflex composite beam and a construction method thereof. The corrugated steel ventral shield preflex composite beam consists of an I-shaped girder provided with a corrugated steel ventral shield, and reinforced concrete boards coated outside the margin plates of the upper and the lower wings of the I-shaped girder. The corrugated steel ventral shield preflex composite beam can be applied to urban interchange engineering and high-speed railway bridge engineering. As the rigidity of the longitudinal bridge direction of the corrugated steel ventral shield is very small, which can not absorb preflex force when preflexing the girder, the loss of prestress of the structure under shrinkage and creep effects can be reduced; the excellent shear resistance bearing capacity of the corrugated steel ventral shield avoids cracks of the ventral shield, and the durableness of the structure is good; moreover, the invention also provides the construction method of the corrugated steel ventral shield preflex composite beam.
Description
Technical field
The present invention relates to a kind of bridge combined beam structure, relate in particular to a kind of corrugated steel ventral shield preflex composite beam and job practices thereof.
Background technology
Pre-bent Combination Beam is a kind of structure of distinct characteristics, is applied to medium and small striding in highway directly and the Simple Supported Railway Bridges in bridge engineering usually, also can be used for continuous girder bridge.Compare with the form of structure that prestress box beam, prestressed T beam etc. are common, its steel using amount is big, the single span cost is higher relatively and construction technology is comparatively complicated; But remarkable advantages such as simultaneously it has also that rigidity is big, span ability strong, good endurance, rise-span ratio are little.Before the 1980s,, be difficult in China as bigger structures of this type of steel using amount such as Pre-bent Combination Beam and be able to extensive employing because China's steel output is less.Thereafter along with the increase of steel output, and the improvement of structure design theory, some steel using amounts are big but structural mechanical property is good, the structure of good endurance (for example encased structures, steel concrete combining structure etc.) also begins to be applied and to develop in China.Pre-bent Combination Beam is as a kind of design feature with distinctness of steel concrete combining structure.Though mechanical property is good, comparing with other traditional structures also has weakness and deficiency.At present, this structure is applied to rise-span ratio restriction the have relatively high expectations structure of (as High-speed Railway Bridges) of strict (as mutilevel overpass) or the rigidity of structure comparatively more.For this class formation, Pre-bent Combination Beam not only can well realize its structure function, also has good and economic.Though Pre-bent Combination Beam has many advantages, in recent years at China's slower development.Research for the Pre-bent Combination Beam structure mainly concentrates in minority colleges and universities and the research institution, and the quantity of practical application is also very limited, far fewer than countries such as Belgium, Germany, Japan and France.Trace it to its cause, can be summed up as following 3 points: single span Pre-bent Combination Beam cost is higher relatively; Construction technology is comparatively complicated; Lack corresponding design, job specfication and standard.
Summary of the invention
The technical problem that solves:
The invention provides a kind of corrugated steel ventral shield preflex composite beam, it is higher relatively to have solved above-mentioned described single span Pre-bent Combination Beam cost; Construction technology is comparatively complicated; Lack corresponding design, job specfication and standard.
The present invention is the technical solution problem by the following technical solutions:
The job practices of a kind of corrugated steel ventral shield preflex composite beam of the present invention, step is as follows,
1) adopt welding that top flange steel plate, bottom flange steel plate and corrugated steel web are welded into I-beam;
2) several shear connectors of welding on top flange steel plate and bottom flange steel plate;
3) stride path position apart from beam two ends 1/4 at I-beam and apply vertical pre-bending power;
4) at bottom flange steel plate placed around longitudinal reinforcement and stirrup and build fist stage concrete;
5) treat that fist stage concrete reaches prescribed strength after, discharge pre-bending power;
6) at top flange steel plate placed around longitudinal reinforcement and stirrup and build the second phase and mix earth; After treating that second stage concrete reaches prescribed strength, finish ripple steel web Pre-bent Combination Beam and set up.
The corrugated steel ventral shield preflex composite beam of making by job practices of the present invention, the top flange steel plate that comprises the fist stage concrete that is cast in around the steel plate of bottom flange, links together with second stage concrete, corrugated steel web, corrugated steel web is arranged between bottom flange steel plate and the top flange steel plate, the three forms the I-beam structure, second stage concrete is cast on the steel plate of top flange, or is connected with the upper surface of top flange steel plate.
Beneficial effect
According to such scheme, the invention provides a kind of corrugated steel ventral shield preflex composite beam, to improve the defective that traditional Pre-bent Combination Beam loss of prestress is big, construction technology is complicated, also can reduce rolled steel dosage simultaneously to a certain extent, reduce structural cost.The outer armored concrete slab of frange plate constitutes by the worker's shape girder steel that has corrugated steel web with about being wrapped in steel I-beam in the present invention, can be applicable in city intersection engineering and the High-speed Railway Bridges engineering.Because the vertical bridge of corrugated steel web is very little to rigidity, can not absorb pre-bending power when girder steel pre-bending, also can reduce the loss of prestress of structure under the shrinkage and creep effect, so its prestressing force efficient height; Because therefore corrugated steel web buckling strength height need not in the welding of web place horizontal or longitudinal stiffener when construction, also need not additionally to be provided with direction across bridge and prop up ejection device, so its easy construction, the duration is short; Corrugated steel web adopts steel plate rolling to form, and can be made into the web of uniform section or variable cross-section height easily according to designing requirement; Because this construction pre-stress efficient height, easy construction, its economy also increases.Corrugated steel ventral shield preflex composite beam is done the time spent being subjected to bending load, and moment of flexure is mainly born by the frange plate up and down of steel I-beam and first phase and second stage concrete, and shearing is mainly born by corrugated steel web.The pre-bending power that is added on steel I-beam in advance can be postponed the appearance in beam body crack, helps giving full play to the characteristics of Materials with High Strength.Owing to adopt steel I-beam that structure is applied prestressing force, compare work progresss such as having avoided being provided with prestress pipe, stretch-draw prestressing force steel bundle, anchoring and duct grouting with traditional prestressed reinforced concrete construction simultaneously.And the shear-carrying capacity that corrugated steel web is good has been avoided the web crack, and structure durability is good.
Description of drawings
Fig. 1 structural representation of the present invention;
Fig. 2 cross-sectional view of the present invention;
Fig. 3 vertical view of the present invention;
Fig. 4 structural change diagrammatic sketch of the present invention;
The structural representation of Fig. 5 concrete listrium of the present invention;
Fig. 6 concrete of the present invention does not superscribe edge of a wing steel plate schematic diagram;
1 is that corrugated steel web, 2 is that top flange steel plate, 3 is that bottom flange steel plate, 4 is that shear connector, 5 is that fist stage concrete, 6 is that second stage concrete, 7 is that longitudinal reinforcement, 8 is that stirrup, L are the corrugated steel ventral shield preflex composite beam beam length among the figure, and L/4 is corrugated steel ventral shield preflex composite beam 1/4 place.
The specific embodiment
Specifically the present invention is described in more detail below in conjunction with description of drawings:
Embodiment 1: a kind of corrugated steel ventral shield preflex composite beam, comprise the fist stage concrete 5 that is cast in bottom flange steel plate 3, the top flange steel plate 2 that is connected with second stage concrete 6, also comprise corrugated steel web 1, corrugated steel web 1 is arranged between bottom flange steel plate 3 and the top flange steel plate 2, and the three forms the I-beam structure.
A kind of corrugated steel ventral shield preflex composite beam of the present invention, described second stage concrete 6 is cast on the top flange steel plate 2.
A kind of corrugated steel ventral shield preflex composite beam of the present invention, described second stage concrete 6 is connected with six end faces of top flange steel plate 2.Connecting six end faces is appreciated that into second stage concrete 6 and superscribes edge of a wing steel plate 2.
In erection process, adopt second stage concrete 6 to superscribe 2 needs of edge of a wing steel plate and make mould earlier with top flange steel plate 2 parcels, building second stage concrete 6 then, treat that second stage concrete 6 is dismountable mould after reaching prescribed strength, increase the bulk strength of ripple steel web Pre-bent Combination Beam like this, but construction technology is comparatively complicated, and construction cost is higher.
A kind of corrugated steel ventral shield preflex composite beam of the present invention, described top flange steel plate 2 is provided with shear connector 4 with bottom flange steel plate 3.
A kind of corrugated steel ventral shield preflex composite beam of the present invention, described I-beam structure are the constant equal altitudes beam of building height.
The firm web Pre-bent Combination Beam of a kind of ripple of the present invention, described I-beam structure forms degree of uprising beam by changing the corrugated steel web height.
The job practices of a kind of corrugated steel ventral shield preflex composite beam of the present invention, step is as follows:
1) adopt welding that top flange steel plate 2, bottom flange steel plate 3 are welded into I-beam with corrugated steel web 1;
2) several shear connectors 4 of welding on top flange steel plate 2 and bottom flange steel plate 3;
3) stride path position apart from beam two ends 1/4 at I-beam and apply vertical pre-bending power;
4) at bottom flange steel plate 3 placed around longitudinal reinforcements 7 and stirrup 8 and build fist stage concrete 5;
5) treat that fist stage concrete 5 reaches prescribed strength after, discharge pre-bending power;
6) at top flange steel plate 2 placed around longitudinal reinforcements 7 and stirrup 8 and build the second phase and mix earth 6; After treating that second stage concrete 6 reaches prescribed strength, finish ripple steel web Pre-bent Combination Beam and set up.
Embodiment 2: a kind of corrugated steel ventral shield preflex composite beam, comprise the fist stage concrete 5 that is cast in bottom flange steel plate 3, the second stage concrete 6 that is connected top flange steel plate 2, comprise that also corrugated steel web 1, corrugated steel web 1 are arranged between fist stage concrete 5 that is cast in bottom flange steel plate 3 and the second stage concrete 6 that is connected top flange steel plate 2, the three forms the I-beam structure.
A kind of corrugated steel ventral shield preflex composite beam of the present invention, described second stage concrete 6 is cast on the top flange steel plate 2.
A kind of corrugated steel ventral shield preflex composite beam of the present invention, described second stage concrete 6 is connected with top flange steel plate 2 upper surfaces, then adopts second stage concrete 6 not superscribe edge of a wing steel plate 2, only is connected with shear connector 4 on the top flange steel plate 2.
Adopt second stage concrete 6 not superscribe edge of a wing steel plate 2, then need not to make mould, directly pour into a mould second stage concrete in the one side of the shear connector of last a balsh plate 2, the simple cost of construction technology is lower, but the intensity of whole ripple steel web Pre-bent Combination Beam can reduce.
A kind of corrugated steel ventral shield preflex composite beam of the present invention, described top flange steel plate 2 is provided with shear connector 4 with bottom flange steel plate 3.
A kind of corrugated steel ventral shield preflex composite beam that the present invention states, described I-beam structure are the constant equal altitudes beam of building height.
The firm web Pre-bent Combination Beam of a kind of ripple of the present invention, described I-beam structure forms degree of uprising beam by changing the corrugated steel web height.
The construction method step of a kind of corrugated steel ventral shield preflex composite beam of the present invention is as follows:
1) adopt welding that top flange steel plate 2, bottom flange steel plate 3 are welded into I-beam with corrugated steel web 1;
2) several shear connectors 4 of welding on top flange steel plate 2 and bottom flange steel plate 3;
3) stride path position apart from beam two ends 1/4 at I-beam and apply vertical pre-bending power;
4) at bottom flange steel plate 3 placed around longitudinal reinforcements 7 and stirrup 8 and build fist stage concrete 5;
5) treat that fist stage concrete 5 reaches prescribed strength after, discharge pre-bending power;
6) at top flange steel plate 2 placed around longitudinal reinforcements 7 and stirrup 8 and build the second phase and mix earth 6; After treating that second stage concrete 6 reaches prescribed strength, finish ripple steel web Pre-bent Combination Beam and set up.
Claims (2)
1. the job practices of a corrugated steel ventral shield preflex composite beam, it is characterized in that: step is as follows,
1) adopt welding that top flange steel plate (2), bottom flange steel plate (3) are welded into I-beam with corrugated steel web (1);
2) go up welding several shear connectors (4) at top flange steel plate (2) and bottom flange steel plate (3);
3) stride path position apart from beam two ends 1/4 at I-beam and apply vertical pre-bending power;
4) at bottom flange steel plate (3) placed around longitudinal reinforcement (7) and stirrup (8) and build fist stage concrete (5);
5) treat that fist stage concrete (5) reaches prescribed strength after, discharge pre-bending power;
6) at top flange steel plate (2) placed around longitudinal reinforcement (7) and stirrup (8) and build the second phase and mix earth (6); After treating that second stage concrete (6) reaches prescribed strength, finish corrugated steel ventral shield preflex composite beam and set up.
2. the corrugated steel ventral shield preflex composite beam of making by the described job practices of claim 1, it is characterized in that: comprise the top flange steel plate (2) that is cast on every side fist stage concrete (5) of bottom flange steel plate (3), links together with second stage concrete (6), corrugated steel web (1), corrugated steel web (1) is arranged between bottom flange steel plate (3) and the top flange steel plate (2), the three forms the I-beam structure, second stage concrete (6) is cast on the top flange steel plate (2), or is connected with the upper surface of top flange steel plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100264969A CN101550675B (en) | 2009-04-22 | 2009-04-22 | Corrugated steel ventral shield preflex composite beam and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100264969A CN101550675B (en) | 2009-04-22 | 2009-04-22 | Corrugated steel ventral shield preflex composite beam and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101550675A CN101550675A (en) | 2009-10-07 |
| CN101550675B true CN101550675B (en) | 2010-12-29 |
Family
ID=41155147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100264969A Expired - Fee Related CN101550675B (en) | 2009-04-22 | 2009-04-22 | Corrugated steel ventral shield preflex composite beam and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101550675B (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100958014B1 (en) * | 2010-01-29 | 2010-05-17 | 변형균 | Construction method of steel composite girder bridge |
| CN102561202B (en) * | 2012-02-15 | 2013-11-13 | 中南大学 | Construction method of preloaded and prestressed bridge |
| CN102877417B (en) * | 2012-10-26 | 2014-12-03 | 中铁上海设计院集团有限公司 | Anchoring method of girder suspender of continuous camber composite bridge |
| CN103498527B (en) * | 2013-07-18 | 2015-10-14 | 浙江中隧桥波形钢腹板有限公司 | After Wavelike steel webplate, prestressed combined structure construction technology is shunk in weldering |
| CN103422618B (en) * | 2013-07-18 | 2016-04-20 | 浙江中隧桥波形钢腹板有限公司 | Wavelike steel webplate steel-concrete combined structure simply supported l beam |
| CN103422617B (en) * | 2013-07-18 | 2016-04-20 | 浙江中隧桥波形钢腹板有限公司 | The continuous i beam of Wavelike steel webplate steel-concrete combined structure |
| CN103982004A (en) * | 2014-03-31 | 2014-08-13 | 浙江杭萧钢构股份有限公司 | Steel tube bundle combination structure with I-shaped web |
| KR101476290B1 (en) * | 2014-05-09 | 2014-12-24 | 우경기술주식회사 | Steel composite PSC corrugated steel plate U girder |
| CN104988844B (en) * | 2015-05-19 | 2016-08-24 | 河南省交通规划设计研究院股份有限公司 | Two times tensioning prestressing force assembled Wavelike steel webplate combination beam |
| CN105019595A (en) * | 2015-07-30 | 2015-11-04 | 东南大学 | Corrugated steel web with steel-concrete composite structure |
| CN106284046A (en) * | 2016-10-09 | 2017-01-04 | 北京市市政工程设计研究总院有限公司 | Bridge steel concrete equals curved combination beam manufacture method |
| CN108130852A (en) * | 2016-12-01 | 2018-06-08 | 上海浦东建筑设计研究院有限公司 | A kind of steel reinforced concrete combined board structure of Short/Medium Span Bridge |
| CN107386088A (en) * | 2017-08-31 | 2017-11-24 | 中国铁路设计集团有限公司 | A kind of groove-shaped steel reinforcement beams of concrete overbridge structure |
| CN108457195B (en) * | 2018-03-16 | 2020-09-11 | 广州市市政工程设计研究总院有限公司 | Pre-bending construction method for steel-concrete combined beam bridge |
| CN109267469A (en) * | 2018-10-22 | 2019-01-25 | 上海市政工程设计研究总院（集团）有限公司 | A kind of steel-ultra-high performance concrete preflex composite beam bridge and its construction method |
| CN109356017B (en) * | 2018-10-30 | 2023-06-27 | 南昌大学 | Concrete continuous box girder bridge with self-recovery limiting and prestress loss reducing combined structure |
| CN110607737B (en) * | 2019-09-25 | 2020-12-01 | 深圳市市政设计研究院有限公司 | Corrugated steel web composite beam structure with multi-section stiffening ribs and construction method thereof |
-
2009
- 2009-04-22 CN CN2009100264969A patent/CN101550675B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101550675A (en) | 2009-10-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101550675B (en) | Corrugated steel ventral shield preflex composite beam and construction method thereof | |
| CN106894326B (en) | The construction method of assembled pretensioned prestressing corrugated steel web plate composite box girder | |
| CN203768784U (en) | Super toughness concrete plate-steel beam light combined bridge structure | |
| CN108677685B (en) | Ultra-high-performance concrete-part steel beam combined bent cap and construction method thereof | |
| CN103696355B (en) | The light-duty combined bridge structure of a kind of superhigh tenacity concrete slab-girder steel | |
| CN101691737B (en) | Corrugated steel web pre-flex assembled groove shape beam and manufacturing method thereof | |
| Shim et al. | Cyclic behavior of prefabricated circular composite columns with low steel ratio | |
| CN108221634A (en) | The Wavelike steel webplate I-shaped composite beam bridge of maximum assembling | |
| CN106906748B (en) | Based on the construction method for mixing prestressed assembled corrugated steel web plate composite box girder | |
| CN103669194B (en) | Based on the continuous rigid frame bridge of steel truss-concrete slab composite beam | |
| CN108385503A (en) | A kind of assembled light combination beam freely-supported structure changes continuous structure and its construction method | |
| CN103031926B (en) | With the double-T compound beam and preparation method thereof of pre-stressed steel pipe concrete plug | |
| CN208717744U (en) | A kind of assembled steel reinforced concrete combination prefabricated bridge | |
| CN201411626Y (en) | Corrugated steel web pre-bending composite beam | |
| CN206570671U (en) | Based on the prestressed assembled corrugated steel web plate composite box girder of mixing | |
| CN207878254U (en) | A kind of assembled light combination beam freely-supported structure changes continuous structure | |
| CN203639804U (en) | Continuous rigid frame bridge based on steel truss and concrete slab composite beam | |
| CN101230659A (en) | Force-bearing type underplate component | |
| CN101798856B (en) | Steel-concrete combined beam and construction method thereof | |
| CN202990244U (en) | Dual-T shaped composite beam with prestress concrete filled steel tube core bar | |
| CN206570674U (en) | Assembled pretensioned prestressing corrugated steel web plate composite box girder | |
| CN210596966U (en) | Large-span steel-concrete composite bridge structure | |
| CN112282207A (en) | Combined beam, spliced beam and subway station | |
| CN202990196U (en) | Partially prestressed prefabricated thin plate | |
| CN101230667A (en) | Force-bearing type superposed component |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20150422 |
|
| EXPY | Termination of patent right or utility model |