CN102776831A - Bridge bulk mass concrete skewback structure - Google Patents
Bridge bulk mass concrete skewback structure Download PDFInfo
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- CN102776831A CN102776831A CN2012103016089A CN201210301608A CN102776831A CN 102776831 A CN102776831 A CN 102776831A CN 2012103016089 A CN2012103016089 A CN 2012103016089A CN 201210301608 A CN201210301608 A CN 201210301608A CN 102776831 A CN102776831 A CN 102776831A
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Abstract
A bridge bulk mass concrete skewback structure has the advantages of being concise in structure, clear in stress, simple and convenient to construct, economical and reasonable, and can not only well meet the longitudinal and transversal stressing requirements of the skewback structure, but also simultaneously lower influence brought by heat of hydration and concrete shrinkage during construction process. The bridge bulk mass concrete skewback structure comprises a skewback (10) which supports and fixedly connecting a border pier (20) and an arch ring (30), and the whole of the skewback (10) is in a transversal uniform-section step shape and composed of a lower-portion plain concrete casting body (11) and an upper-portion reinforced concrete casting body (12). A transversal breaking joint (13) is arranged in the middle of the plain concrete casting body (11), and steel plates (14) are filled in the transversal breaking joint (13). The border pier (20) and the arch ring (30) are cast on the upper-portion reinforced concrete casting body (12).
Description
Technical field
The present invention relates to bridge, particularly a kind of large-span arch bridge concrete in mass abut that is applicable to " V " type landform of crossing over area, river valley, mountain area.
Background technology
Arch bridge is a kind of ancient bridge type, has very strong vitality, and along with development and national economy, communication is maked rapid progress, in hard and dangerous mountain area, bridge engineering is built in the area, river valley becomes inevitable.And in this type of area, the arch bridge bridge-type has the unsurpassable advantage of other bridge types, no matter be deck type, half-through or lower bearing arch bridge, is a unavoidable big problem to the research and the design of abut.
Common abut pattern has Open-cut Foundation formula, tunnel anchor formula, in addition also has some special-shaped abut patterns.These different abut patterns are more or less some problems of existence all.As far as open cut foundation; Be the impartial design in basic top, bottom mostly, the abut of this form has its reasonability to the arch bridge of medium and small span; But just there are a lot of problems in the big volume abut to long-span arch bridge: the actual loading characteristics and the mechanism of action that do not count abut; Stressed indeterminate, as to have got into " bearing capacity too small-basis increasing-bearing capacity is more little " vicious circle causes the very big waste of masonry material.In addition distinct issues are that the heat of hydration and the concrete blockage effect in the work progress forms the crack easily, and some crack will be given into bridge stage operation security and bring great potential safety hazard if extend to arch ring.
Summary of the invention
Technical problem to be solved by this invention provides a kind of bridge concrete in mass abut structure; Characteristics with succinct, stressed clear and definite, the easy construction of structure, economical rationality; Not only be well positioned to meet vertical, the lateral stressed needs of arch bridge structure, can reduce simultaneously the influence that the heat of hydration and concrete shrinkage in the work progress are brought.
The technical solution adopted for the present invention to solve the technical problems is following:
Bridge concrete in mass abut structure of the present invention; Comprise supporting and the abut that is fixedly connected boundary pier, arch ring; It is characterized in that: said abut integral body is horizontal prismatic step, builds body and upper reinforcement concreting body constitutes by the bottom plain concrete; The middle part that said plain concrete is built body is provided with horizontal breaking joint, is filled by steel plate in this horizontal breaking joint; Said boundary pier, arch ring are built on upper reinforcement concreting body.
The invention has the beneficial effects as follows that abut adopts the step base form, structure is succinct, and easy construction does not receive the restriction of current construction technology, and difficulty of construction is less, and construction risk is less; Loading characteristic according to its arch ring and boundary pier; Abut is divided into the bottom plain concrete builds body, upper reinforcement concreting body two parts, reasonable stress, power transmission is clear and definite; This processing mode that suits loading characteristic can make full use of the rock mass supporting capacity, more helps Load Transfer; The bottom plain concrete is provided with breaking joint in the middle of building body; The heat of hydration effect that can not only reduce effectively in the work progress can also be controlled the crack that concrete shrinkage causes; Reduce the probability that the crack forms, the protection arch ring avoids arch ring and abut connecting portion to produce the crack that can not expect; The bottom plain concrete is built the concrete that body, upper reinforcement concreting body adopt different labels, and adopt different form of reinforcement can bring into play the performance of material to greatest extent, improve the stress deposit in core concrete zone.
Description of drawings
This manual comprises following seven width of cloth accompanying drawings:
Fig. 1 is the lateral view of bridge concrete in mass abut structure of the present invention;
Fig. 2 is the vertical view of bridge concrete in mass abut structure of the present invention;
Fig. 3 is the lateral view that bridge concrete in mass abut structure of the present invention bottom plain concrete is built body;
Fig. 4 is the vertical view that bridge concrete in mass abut structure of the present invention bottom plain concrete is built body;
Fig. 5 is along A-A line sectional view among Fig. 4;
Fig. 6 is the profile that bridge concrete in mass abut structure of the present invention top steel concrete is built body;
Fig. 7 is the figure that bows that bridge concrete in mass abut structure of the present invention top steel concrete is built body.
Position shown in the figure, parts and pairing mark: abut 10, bottom plain concrete are built body 11, right side wall 11a, left side wall 11b, rear wall 11c, bottom 11d, upper reinforcement concreting body 12, horizontal breaking joint 13, steel plate 14, transverse prestress steel bundle 15, boundary pier 20, arch ring 30.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
See figures.1.and.2; Bridge concrete in mass abut structure of the present invention; Comprise and supporting and the abut 10 that is fixedly connected boundary pier 20, arch ring 30 that said abut 10 integral body are horizontal prismatic step, build body 11 by the bottom plain concrete and constitute with upper reinforcement concreting body 12; Double dot dash line is built the line of demarcation of body 11, upper reinforcement concreting body 12 for the bottom plain concrete among the figure, and said boundary pier 20, arch ring 30 are built on upper reinforcement concreting body 12.Abut is divided into two parts up and down, reasonable stress, power transmission is clear and definite, and this processing mode that suits loading characteristic can make full use of the rock mass supporting capacity, more helps Load Transfer.
With reference to Fig. 2 and Fig. 4, Fig. 5, the middle part that said plain concrete is built body 11 is provided with horizontal breaking joint 13, is filled by steel plate 14 in this horizontal breaking joint 13.The heat of hydration effect that the setting of horizontal breaking joint 13 can not only reduce in the work progress effectively can also be controlled the crack that concrete shrinkage causes, reduces the probability that the crack forms, and the protection arch ring avoids arch ring and abut connecting portion to produce the crack that can not expect.
With reference to Fig. 3 to Fig. 5; Said bottom plain concrete is built body 11 and is made up of bottom 11d and right side wall 11a, left side wall 11b, rear wall 11c; The inwall of bottom 11d upper surface and right side wall 11a, left side wall 11b, rear wall 11c forms a pit, and upper reinforcement concreting body 12 is built in this pit.Usually, the bottom plain concrete is built body 11 and is adopted the C30 plain concrete, and upper reinforcement concreting body 12 adopts C40 steel concrete, and the bottom plain concrete is built body 11 simultaneously, upper reinforcement concreting body 12 is taked different reinforcement manners.The bottom plain concrete is built body 11, and 11d surface and rear wall 11c surface are provided with the mask reinforcing bar in the bottom.With reference to Fig. 6 and Fig. 7; Because the vertical broad of upper reinforcement concreting body 12 parts, and link to each other, ftracture for preventing abut 10 with arch ring 30; Upper reinforcement concreting body 12 is except that intensive arrangement of reinforcement; Also dispose transverse prestress steel bundle 15 in it, utilize 15 pairs of upper reinforcement concreting of transverse prestress steel bundle body 12 to carry out precompressed, to increase its stress deposit.During site operation; Build the bottom plain concrete earlier and build the bottom 11d and the rear wall 11c of body 11; Build upper reinforcement concreting body 12 then; After treating that 15 stretch-draw of transverse prestress steel bundle apply the prestressing force completion, build the bottom plain concrete more at last and build the right side wall 11a of body 11, left side wall 11b, closed upper portion steel concrete is built the both ends of the surface of body 12.
That bridge concrete in mass abut of the present invention structure has is simple for structure, reasonable stress, easy construction and characteristics handsome in appearance.The applicant successfully is applied in design of building Shanghai Kun Keyunzhuanxianbei dish river grand bridge (main span 445m) and cloud osmanthus railway Nanpanjiang River grand bridge (main span 416m) and construction.Wherein grand bridge design speed per hour in the specially northern dish of Shanghai elder brother visitor river is 350km/h, is main span 445m deck type reinforced concrete arch bridge, is concrete arch-type bridge the biggest in the world after building up, and cloud osmanthus railway Nanpanjiang River grand bridge main span is a 416m deck type concrete arch-type bridge.The enforcement on the abut basis of this two arch bridge has obtained favorable economic benefit and good social benefit.
Some principles of the above bridge concrete in mass abut structure of the present invention that just explains through diagrams; Be not be want the present invention be confined to shown in described concrete structure and the scope of application in; So every the response modification and equivalent that might be utilized, the claim that all belongs to the present invention and applied for.
Claims (4)
1. bridge concrete in mass abut is constructed; Comprise and supporting and the abut (10) that is fixedly connected boundary pier (20), arch ring (30); It is characterized in that: said abut (10) integral body is horizontal prismatic step, builds body (11) and upper reinforcement concreting body (12) formation by the bottom plain concrete; The middle part that said plain concrete is built body (11) is provided with horizontal breaking joint (13), is filled by steel plate (14) in this horizontal breaking joint (13); Said boundary pier (20), arch ring (30) are built on upper reinforcement concreting body (12).
2. bridge concrete in mass abut structure as claimed in claim 1; It is characterized in that: said bottom plain concrete is built body (11) and is made up of with right side wall (11a), left side wall (11b), rear wall (11c) bottom (11d); The inwall of bottom (11d) upper surface and right side wall (11a), left side wall (11b), rear wall (11c) forms a pit, and upper reinforcement concreting body (12) is built in this pit.
3. bridge concrete in mass abut structure as claimed in claim 2, it is characterized in that: said bottom plain concrete is built body (11) and is adopted the C30 plain concrete, and (11d) surface and lateral rear wall (11c) surface are provided with the mask reinforcing bar in the bottom.
4. bridge concrete in mass abut structure as claimed in claim 2, it is characterized in that: said upper reinforcement concreting body (12) adopts C40 steel concrete, except that intensive arrangement of reinforcement, also disposes transverse prestress steel bundle (15) in it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103016089A CN102776831A (en) | 2012-08-23 | 2012-08-23 | Bridge bulk mass concrete skewback structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103016089A CN102776831A (en) | 2012-08-23 | 2012-08-23 | Bridge bulk mass concrete skewback structure |
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| CN102776831A true CN102776831A (en) | 2012-11-14 |
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| CN2012103016089A Pending CN102776831A (en) | 2012-08-23 | 2012-08-23 | Bridge bulk mass concrete skewback structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107761541A (en) * | 2017-12-20 | 2018-03-06 | 广西大学 | A kind of construction method suitable for large span arch bridge basis |
| CN107842032A (en) * | 2017-12-20 | 2018-03-27 | 广西大学 | A kind of large span arch bridge basis |
| CN108625274A (en) * | 2018-06-27 | 2018-10-09 | 中铁二院工程集团有限责任公司 | A kind of arch bridge skewback construction improving basic bearing capacity |
| CN111074781A (en) * | 2019-12-31 | 2020-04-28 | 中铁大桥局集团有限公司 | Method for quickly excavating suspension bridge tunnel anchor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010185233A (en) * | 2009-02-13 | 2010-08-26 | Yoshimoto Honke Sekizaiten:Kk | Structure for reinforcing balustrade of stone bridge |
| CN102425103A (en) * | 2011-08-22 | 2012-04-25 | 彭凯 | Reinforced combined arch ring for arch bridge |
| CN202688861U (en) * | 2012-08-23 | 2013-01-23 | 中铁二院工程集团有限责任公司 | Large-sized concrete arch bridge structure for bridge |
-
2012
- 2012-08-23 CN CN2012103016089A patent/CN102776831A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010185233A (en) * | 2009-02-13 | 2010-08-26 | Yoshimoto Honke Sekizaiten:Kk | Structure for reinforcing balustrade of stone bridge |
| CN102425103A (en) * | 2011-08-22 | 2012-04-25 | 彭凯 | Reinforced combined arch ring for arch bridge |
| CN202688861U (en) * | 2012-08-23 | 2013-01-23 | 中铁二院工程集团有限责任公司 | Large-sized concrete arch bridge structure for bridge |
Non-Patent Citations (3)
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| 刘健恒: "大体积砼温度裂缝产生的原因及控制措施", 《科技经济市场》, no. 9, 30 September 2006 (2006-09-30), pages 21 - 22 * |
| 邵东辉: "南盘江特大桥设计要点及主要施工方案初步研究", 《四川建材》, vol. 37, no. 5, 30 June 2011 (2011-06-30), pages 131 - 133 * |
| 项后军等: "特大拱桥拱座-基岩稳定性分析", 《公路交通科技（应用技术版）》, no. 2, 28 February 2011 (2011-02-28), pages 117 - 119 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107761541A (en) * | 2017-12-20 | 2018-03-06 | 广西大学 | A kind of construction method suitable for large span arch bridge basis |
| CN107842032A (en) * | 2017-12-20 | 2018-03-27 | 广西大学 | A kind of large span arch bridge basis |
| CN107761541B (en) * | 2017-12-20 | 2019-02-26 | 广西大学 | A kind of construction method suitable for large span arch bridge basis |
| CN108625274A (en) * | 2018-06-27 | 2018-10-09 | 中铁二院工程集团有限责任公司 | A kind of arch bridge skewback construction improving basic bearing capacity |
| CN111074781A (en) * | 2019-12-31 | 2020-04-28 | 中铁大桥局集团有限公司 | Method for quickly excavating suspension bridge tunnel anchor |
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Application publication date: 20121114 |