CN103741579A - Corrugated steel web combination curve beam bridge with horizontal partition plates - Google Patents
Corrugated steel web combination curve beam bridge with horizontal partition plates Download PDFInfo
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- CN103741579A CN103741579A CN201310725581.0A CN201310725581A CN103741579A CN 103741579 A CN103741579 A CN 103741579A CN 201310725581 A CN201310725581 A CN 201310725581A CN 103741579 A CN103741579 A CN 103741579A
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Abstract
The invention discloses a corrugated steel web combination curve beam bridge with horizontal partition plates. The thickness of every horizontal partition plate at the position of a bridge pier in the corrugated steel web combination curve beam bridge is set to be 2.5m, the thickness of every horizontal partition plate at the position of a bridge abutment is set to be 1.5m, and the thickness of every horizontal partition plate at the position of a midspan is set to be 0.3m. The corrugated steel web combination curve beam bridge is characterized in that the elasticity modulus of main body material concrete of a curve box beam structure is no larger than the elasticity modulus of every horizontal partition plate, and the thickness of an upper concrete plate and the thickness of a lower concrete plate are no large than that of every horizontal partition plate. In design of the corrugated steel web combination curve beam bridge, distortion of the box beam can be restrained by arranging a certain number of horizontal partition plates on the basis of guaranteeing that the self weight is not increased excessively, and structure warping normal stress is reduced under the effect of an eccentric load.
Description
technical field:
The present invention relates to a kind of Wavelike steel webplate build-up curve beam bridge with diaphragm, it belongs to bridge technology research field.
background technology:
In modern bridge construction, apply most often prestressed concrete box shape structure, the main advantage of this class formation shows: can adapt to the torsional rigidity in the construction method in various modern times, the ability with the positive hogging moment of opposing, cross section larger etc.Wavelike steel webplate build-up curve case beam, its cross section torsional rigidity is smaller, and under the acting in conjunction of cross section distortion, Torsion Coupling, Shear Lag and buckling deformation, this class formation spatial character is good, stressed more complicated.In order to limit longitudinal normal stress and transverse bending distorting stress, improve Load Transverse Distribution, about area of beam is reversed.Thereby textural, can play a role by adding diaphragm.Therefore, diaphragm is set and in the design of Wavelike steel webplate build-up curve case beam, is absolutely necessary, but because position distribution and the quantity of diaphragm lack certain rationale, be usually to try to achieve by tentative calculation.
summary of the invention:
The invention provides a kind of Wavelike steel webplate build-up curve beam bridge with diaphragm, it is by researching and analysing the impact of the position that draws diaphragm on Wavelike steel webplate build-up curve beam bridge.
The present invention adopts following technical scheme: a kind of Wavelike steel webplate build-up curve beam bridge with diaphragm, the thickness of establishing diaphragm in described Wavelike steel webplate build-up curve beam bridge at bridge pier place is 2.5m, the thickness of establishing diaphragm at Abutment is 1.5m, the thickness of establishing diaphragm at span centre place is 0.3m, the concrete modulus of elasticity of material of main part of described curved box girder structure is not more than the modulus of elasticity of diaphragm, and the thickness of upper and lower concrete slab is not more than the thickness of diaphragm.
Described diaphragm is divided into flexible diaphragm and rigidity diaphragm.
The present invention has following beneficial effect: in the curved bridge design of Wavelike steel webplate build-up curve case beam of the present invention, in assurance deadweight, exceed under the basis of increase, can suppress by adding the diaphragm of some the distortion distortion of case beam, effect is to make it under Under Eccentric Loading, and the warped normal strain of structure reduces.
accompanying drawing explanation:
Fig. 1 is the structure chart of Wavelike steel webplate build-up curve beam bridge of the present invention.
Wherein:
1-abutment; 2-bridge pier.
the specific embodiment:
Diaphragm in Wavelike steel webplate build-up curve beam bridge of the present invention is divided into flexible diaphragm and rigidity diaphragm.What generally, in Wavelike steel webplate concrete pre-stress build-up curve case beam, arrange is rigidity diaphragm.Diaphragm is wherein set and can resists the torsion in cross section, can also make warpage distortion rigidity increase and the thickness of diaphragm of curved box girder relevant with distortion with the stress sensitive degree of curved box girder, relation is: the less distortion distortion that just can limit cross section of thickness of diaphragm, increase the thickness of diaphragm, the stress of curved box girder and distortion do not have obvious variation.
Choosing of diaphragm should be followed several principles below: the concrete modulus of elasticity of material of main part of curved box girder structure is not more than the modulus of elasticity of diaphragm, and the thickness of upper and lower concrete slab is not more than the thickness of diaphragm.
Please refer to shown in Fig. 1, the thickness of establishing diaphragm at bridge pier place is 2.5m, and the thickness of establishing diaphragm at Abutment is 1.5m, and the thickness of establishing diaphragm at span centre place is 0.3m.
In order to make the Stress Control of span centre underplate concrete in elastic range, therefore to select appropriate load mode and heap(ed) capacity.Choose two kinds of situations of asymmetrical load and bias-load here.Along along the bridge, the distortion of the curved bridge of Wavelike steel webplate build-up curve case beam varies in size, and structure is maximum in the distortion of the place of load action, so only need calculate tangential normal stress.As show 4-4 given at span centre place, the tangential normal stress under the different load condition of different diaphragm quantity is set.
The tangential normal stress of base plate during diaphragm number change in table 1-1
In note table, unit of stress is MPa.
From table, 1-1 can find out, when the curved bridge of Wavelike steel webplate build-up curve case beam is not placed diaphragm, when warpage distortion normal stress can reach symmetrical loading 29% of flexural stress.The continuous increase of middle diaphragm number, warpage distortion normal stress just reduces gradually, and when the quantity of central diaphragm is increased to 4 road, warpage distortion normal stress has declined 9% with the ratio of corresponding flexural stress, and therefore, the effect of diaphragm is very necessary.
In sum, in the curved bridge design of Wavelike steel webplate build-up curve case beam, in assurance deadweight, exceed under the basis of increase, can suppress by adding the diaphragm of some the distortion distortion of case beam, effect is to make it under Under Eccentric Loading, and the warped normal strain of structure reduces.In addition, diaphragm can also make the torsional rigidity of case beam increase so that load cross direction profiles.According to the requirement of Bar Anchorage, in order to make the warping stress of arbitrary section in elastic range, the number needs of diaphragm will reasonably arrange.
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, can also make under the premise without departing from the principles of the invention some improvement, and these improve and also should be considered as protection scope of the present invention.
Claims (2)
1. one kind has the Wavelike steel webplate build-up curve beam bridge of diaphragm, the thickness of establishing diaphragm in described Wavelike steel webplate build-up curve beam bridge at bridge pier place is 2.5m, the thickness of establishing diaphragm at Abutment is 1.5m, the thickness of establishing diaphragm at span centre place is 0.3m, it is characterized in that: the concrete modulus of elasticity of material of main part of described curved box girder structure is not more than the modulus of elasticity of diaphragm, the thickness of upper and lower concrete slab is not more than the thickness of diaphragm.
2. the Wavelike steel webplate build-up curve beam bridge with diaphragm as claimed in claim 1, is characterized in that: described diaphragm is divided into flexible diaphragm and rigidity diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725581.0A CN103741579A (en) | 2013-12-25 | 2013-12-25 | Corrugated steel web combination curve beam bridge with horizontal partition plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725581.0A CN103741579A (en) | 2013-12-25 | 2013-12-25 | Corrugated steel web combination curve beam bridge with horizontal partition plates |
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| Publication Number | Publication Date |
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| CN103741579A true CN103741579A (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310725581.0A Pending CN103741579A (en) | 2013-12-25 | 2013-12-25 | Corrugated steel web combination curve beam bridge with horizontal partition plates |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104652206A (en) * | 2015-02-02 | 2015-05-27 | 中铁西北科学研究院有限公司 | Assembled urban interchange system |
| CN105821753A (en) * | 2016-05-18 | 2016-08-03 | 中铁第四勘察设计院集团有限公司 | Novel railway curve leaning tower cable-stayed bridge |
| CN108763667A (en) * | 2018-05-15 | 2018-11-06 | 北京交通大学 | Deep camber curve steel-concrete combined box beam bridge simplifies design method |
Citations (5)
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| JP2007239270A (en) * | 2006-03-07 | 2007-09-20 | Ps Mitsubishi Construction Co Ltd | Pc box girder bridge |
| CN101187197A (en) * | 2007-12-03 | 2008-05-28 | 湖南大学 | Steel-concrete combined structure double-deck continuous girder bridge |
| CN202644840U (en) * | 2012-06-15 | 2013-01-02 | 湖北弘毅钢结构工程有限公司 | Corrugated web steel box girder |
| CN102877407A (en) * | 2012-10-30 | 2013-01-16 | 河南省交通规划勘察设计院有限责任公司 | Concrete continuous box girder of corrugated steel web for curved bridge |
| CN103388375A (en) * | 2013-08-20 | 2013-11-13 | 河南江河重工集团有限公司 | H-shaped steel |
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2013
- 2013-12-25 CN CN201310725581.0A patent/CN103741579A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| JP2007239270A (en) * | 2006-03-07 | 2007-09-20 | Ps Mitsubishi Construction Co Ltd | Pc box girder bridge |
| CN101187197A (en) * | 2007-12-03 | 2008-05-28 | 湖南大学 | Steel-concrete combined structure double-deck continuous girder bridge |
| CN202644840U (en) * | 2012-06-15 | 2013-01-02 | 湖北弘毅钢结构工程有限公司 | Corrugated web steel box girder |
| CN102877407A (en) * | 2012-10-30 | 2013-01-16 | 河南省交通规划勘察设计院有限责任公司 | Concrete continuous box girder of corrugated steel web for curved bridge |
| CN103388375A (en) * | 2013-08-20 | 2013-11-13 | 河南江河重工集团有限公司 | H-shaped steel |
Non-Patent Citations (1)
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| 宫思维: "波形钢腹板组合曲梁的力学性能", 《工程科技Ⅱ辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104652206A (en) * | 2015-02-02 | 2015-05-27 | 中铁西北科学研究院有限公司 | Assembled urban interchange system |
| CN105821753A (en) * | 2016-05-18 | 2016-08-03 | 中铁第四勘察设计院集团有限公司 | Novel railway curve leaning tower cable-stayed bridge |
| CN108763667A (en) * | 2018-05-15 | 2018-11-06 | 北京交通大学 | Deep camber curve steel-concrete combined box beam bridge simplifies design method |
| CN108763667B (en) * | 2018-05-15 | 2022-03-11 | 北京交通大学 | Simplified design method of large-curvature curve steel-concrete combined box girder bridge |
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Application publication date: 20140423 |