CN105603890A - Extradosed type external cable reinforced girder bridge - Google Patents
Extradosed type external cable reinforced girder bridge Download PDFInfo
- Publication number
- CN105603890A CN105603890A CN201610133392.8A CN201610133392A CN105603890A CN 105603890 A CN105603890 A CN 105603890A CN 201610133392 A CN201610133392 A CN 201610133392A CN 105603890 A CN105603890 A CN 105603890A
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- China
- Prior art keywords
- bridge
- tower
- girder
- external cable
- girders
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- 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.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to an extradosed type external cable reinforced girder bridge, comprising left stay cables, right stay cables, bridge girders and piers. Pylons are cast on the bridge girders or piers that are fixed to the pylons, and the left stay cables and the right stay cables are in anchored connection with the bridge girders two sides of the pylons, respectively. The eccentric distances of the external stay cables can be increased through pylon heights; as the eccentric distances may be increased by 3-4 times when compared to a reinforcing method of adding external prestress into the girders, external cable staying is higher with better effect; particularly for the problem of vertical displacement in girder span, great vertical component force may be provided using external cable staying, and the problem of excess deformation is basically solved. After the girder bridge is reinforced by external cable staying, it is possible to optimize stress bearing for the girders, restrain crack development, reduce intra-span flexibility, improve bridge linearity, increase structural bearing capacity and prolong the service life.
Description
Technical field
The present invention relates to a kind of bridge, be specifically related to a kind of external drag-line and reinforce beam bridge.
Background technology
The beam bridges such as continuous bridge, continuous rigid frame bridge and the T-shaped rigid frame bridge built in early days, after long-term use, all there is in various degree beam cracks, be out of shape the problems such as excessive, cause the problem of structural entity bearing capacity deficiency more and more serious, become security incident hidden danger, need badly and reinforce and safeguard.
Beam system bridge main is stressed, and its main member is beam, and reinforcement means is mainly in beam body and adds external prestressing at present, secondly show consideration for carbon cloth or steel plate at beam, but consolidation effect is all very good, is particularly out of shape problems of too, can not get fine solution. After having a lot of bridge strengthening, solve because distortion problems of too does not have essence, still have potential safety hazard, even occur, abroad some reinforces the example just collapsing soon.
Summary of the invention
The object of the invention is to, provide a kind of external drag-line of short tower cable-stayed type of new reinforcing construction to reinforce beam bridge, for solving above technical problem.
The present invention solves Compiling Technique technical scheme that problem adopts:
The external drag-line of a kind of short tower cable-stayed type is reinforced beam bridge, comprise left suspension cable, right suspension cable, girder bridge main beam, bridge pier, on described girder bridge main beam or bridge pier, build tower, and girder bridge main beam or bridge pier and tower are consolidated, described left suspension cable, right suspension cable respectively with the girder bridge main beam anchor connection that is positioned at tower both sides, and be connected with tower, form Yi Ta, beam, the stressed combined system of Suo Gongtong.
Described girder bridge main beam is continuous beam or Continuous Rigid-framed Girder or cantilever beam.
The invention has the beneficial effects as follows: new combining structure of the present invention is because external drag-line can increase eccentric throw by tower height, with in beam body, increase external prestress strengthening method and compare, because eccentric throw can increase by 3 ~ 4 times, thereby external drag-line efficiency is higher, better effects if, particularly, for the vertical displacement problem of beam body span centre, the larger vertical force component that can utilize external drag-line to provide, fundamentally solves the excessive problem of distortion. External drag-line can be optimized beam body stressed after beam bridge is reinforced, and containment crack progressing, reduces mid-span deflection, improves bridge line style, improves the bearing capacity of structure, increases the service life.
Brief description of the drawings
Fig. 1 is that the external drag-line of cable-stayed type with continuous beam is reinforced the structural map in beam bridge;
Fig. 2 is the structural map with the external drag-line reinforcing of the cable-stayed type beam bridge of Continuous Rigid-framed Girder;
Fig. 3 is the structural map with the external drag-line reinforcing of the cable-stayed type beam bridge of cantilever beam;
Fig. 4 has the external drag-line reinforcing of the cable-stayed type beam bridge structural map of building tower on continuous beam and former bridge bridge pier.
Detailed description of the invention
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, further set forth the present invention below in conjunction with concrete diagram.
With reference to Fig. 1, the external drag-line of a kind of cable-stayed type is reinforced the structure example of beam bridge, comprise suspension cable 1, suspension cable 2, tower 3, continuous beam 4, bridge pier 5, continuous beam 4 is main force structures of old bridge, on former continuous beam girder, builds tower 3, and drag-line 1 and drag-line 2 are anchored on continuous beam 4 and tower 3, form combination stressed system, new combined system Yi Ta, beam, pier are main bearing member.
With reference to Fig. 2, the external drag-line of a kind of cable-stayed type is reinforced the structure example of beam bridge, comprise left suspension cable 1, right suspension cable 2, tower 3, Continuous Rigid-framed Girder 6, bridge pier 5, Continuous Rigid-framed Girder 6 is main force structures of old bridge, builds tower 3 on the girder of former Continuous Rigid-framed Girder 6, Zola's rope 1 and or drag-line 2 be anchored on Continuous Rigid-framed Girder 6 and tower 3, form combination stressed system, new combined system Yi Ta, beam, pier are main bearing member. (fixed, seamless between bridge pier 5 and girder 6 in Fig. 2).
With reference to Fig. 3, the external drag-line of a kind of cable-stayed type is reinforced the structure example of beam bridge, comprise that left suspension cable 1, right suspension cable 2, tower 3, cantilever beam 7, bridge pier 5, drop in beam 8, cantilever beam 7 are main force structures of old bridge, on the girder of former cantilever beam 7, build tower 3, Zola's rope 1 and right drag-line 2 are anchored on cantilever beam 7 and tower 3, form combination stressed system, new combined system Yi Ta, beam, pier are main bearing member.
With reference to Fig. 4, the external drag-line of a kind of cable-stayed type is reinforced the structure example of beam bridge, comprise left suspension cable 1, right suspension cable 2, tower 3, continuous beam 4, bridge pier 5, continuous beam 4 is main force structures of old bridge, on former bridge bridge pier 5, builds tower 3, Zola's rope 1 and or drag-line 2 be anchored on continuous beam 4 and tower 3, form combination stressed system, new combined system Yi Ta, beam, pier are main bearing member.
Claims (2)
1. the one kind short external drag-line of tower cable-stayed type is reinforced beam bridge, comprise left suspension cable (1), right suspension cable (2), girder bridge main beam, bridge pier (5), it is characterized in that: on described girder bridge main beam or bridge pier (5), build tower (3), and girder bridge main beam or bridge pier (5) are consolidated with tower (3), described left suspension cable (1), right suspension cable (2) respectively with the girder bridge main beam anchor connection that is positioned at tower (3) both sides, and be connected with tower (3), form Yi Ta, beam, the stressed combined system of Suo Gongtong.
2. the external drag-line of short tower cable-stayed type according to claim 1 is reinforced beam bridge, it is characterized in that: described girder bridge main beam is continuous beam (4) or Continuous Rigid-framed Girder (6) or cantilever beam (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610133392.8A CN105603890A (en) | 2015-11-16 | 2016-03-09 | Extradosed type external cable reinforced girder bridge |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015209122362 | 2015-11-16 | ||
| CN201520912236 | 2015-11-16 | ||
| CN201610133392.8A CN105603890A (en) | 2015-11-16 | 2016-03-09 | Extradosed type external cable reinforced girder bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105603890A true CN105603890A (en) | 2016-05-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610133392.8A Pending CN105603890A (en) | 2015-11-16 | 2016-03-09 | Extradosed type external cable reinforced girder bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105603890A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106012872A (en) * | 2016-06-28 | 2016-10-12 | 山东大学 | Dorsal-funiculus-free cable-stayed reinforcing system of continuous rigid frame bridge and construction method |
| CN107574747A (en) * | 2017-09-27 | 2018-01-12 | 中铁第四勘察设计院集团有限公司 | A kind of structural system of combined highway and metro multi pylon cable stayed bridge |
| CN109024319A (en) * | 2018-09-21 | 2018-12-18 | 湖北省交通规划设计院股份有限公司 | A kind of the low-pylon cable-stayed bridge ruggedized construction and construction method of double width continuous rigid frame bridge |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69204584T2 (en) * | 1991-07-01 | 1996-02-22 | Razel Freres Entreprise | Procedure for expanding a bridge field. |
| JP2011032651A (en) * | 2009-07-30 | 2011-02-17 | Yokohama National Univ | Bridge reinforcing structure and bridge reinforcing method |
| CN103266574A (en) * | 2013-05-02 | 2013-08-28 | 浙江大学 | Simply-supported box girder bridge strengthening method with oblique cables |
| CN104652293A (en) * | 2015-02-01 | 2015-05-27 | 北京工业大学 | Cable-stayed bridge structure used for reinforcing PSC (Pre-stressed Concrete) continuous box girder bridge and construction method |
-
2016
- 2016-03-09 CN CN201610133392.8A patent/CN105603890A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69204584T2 (en) * | 1991-07-01 | 1996-02-22 | Razel Freres Entreprise | Procedure for expanding a bridge field. |
| JP2011032651A (en) * | 2009-07-30 | 2011-02-17 | Yokohama National Univ | Bridge reinforcing structure and bridge reinforcing method |
| CN103266574A (en) * | 2013-05-02 | 2013-08-28 | 浙江大学 | Simply-supported box girder bridge strengthening method with oblique cables |
| CN104652293A (en) * | 2015-02-01 | 2015-05-27 | 北京工业大学 | Cable-stayed bridge structure used for reinforcing PSC (Pre-stressed Concrete) continuous box girder bridge and construction method |
Non-Patent Citations (2)
| Title |
|---|
| 马健中 等: "风陵渡黄河大桥的加固研究和设计", 《公路》 * |
| 黄海东 等: "大跨径连续刚构桥新型加固体系研究", 《公路》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106012872A (en) * | 2016-06-28 | 2016-10-12 | 山东大学 | Dorsal-funiculus-free cable-stayed reinforcing system of continuous rigid frame bridge and construction method |
| CN106012872B (en) * | 2016-06-28 | 2019-03-12 | 山东大学 | Continuous rigid frame bridge without dorsal funciculus oblique pull reinforcement system and construction method |
| CN107574747A (en) * | 2017-09-27 | 2018-01-12 | 中铁第四勘察设计院集团有限公司 | A kind of structural system of combined highway and metro multi pylon cable stayed bridge |
| CN107574747B (en) * | 2017-09-27 | 2023-07-14 | 中铁第四勘察设计院集团有限公司 | Structure system of highway-railway co-construction multi-tower cable-stayed bridge |
| CN109024319A (en) * | 2018-09-21 | 2018-12-18 | 湖北省交通规划设计院股份有限公司 | A kind of the low-pylon cable-stayed bridge ruggedized construction and construction method of double width continuous rigid frame bridge |
| CN109024319B (en) * | 2018-09-21 | 2023-12-15 | 湖北省交通规划设计院股份有限公司 | Low-tower cable-stayed bridge reinforcing structure of double-amplitude continuous rigid frame bridge and construction method |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
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Application publication date: 20160525 |