CN105507127A - Arch rib face internal multi-point restrained and distributed tied-arch bridge - Google Patents
Arch rib face internal multi-point restrained and distributed tied-arch bridge Download PDFInfo
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- CN105507127A CN105507127A CN201610020319.XA CN201610020319A CN105507127A CN 105507127 A CN105507127 A CN 105507127A CN 201610020319 A CN201610020319 A CN 201610020319A CN 105507127 A CN105507127 A CN 105507127A
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- arch
- arch rib
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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
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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
- E01D4/00—Arch-type bridges
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- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an arch rib face internal multi-point restrained and distributed tied-arch bridge. A plurality of longitudinal beams connected with an arch rib are arranged below the arch rib, and thus a tie bar capable of resisting constant and live load action of the arch rib and balancing the horizontal thrust in a distributed mode is formed. Vertical stand columns and diagonal web members are arranged on the longitudinal beams and connected with the bottom face of the arch rib, an elastic restraint supporting system is formed in the surface of the arch rib, and thus the integral rigidity and strength of the arch rib are enhanced. Compared with a span arch bridge, the arch rib face internal multi-point restrained and distributed tied-arch bridge has smaller midspan arch rib bending moment and smaller arch springing horizontal thrust, has higher arch rib stability and higher stable bearing capability, and has smaller midspan deformation, and thus travel comfort is improved; in addition, the workload and cost for foundation construction are reduced.
Description
Technical field
The invention belongs to a kind of bowstring arch bridge, particularly multi-point constraint and distributed bowstring arch bridge in a kind of arch rib face.
Background technology
Bowstring arch bridge is combined arch and beam two kinds of basic structure forms, common bearing load, and give full play to beam by curved, that encircle pressurized structural performance and compound action, the horizontal thrust pull bar of arch abutment bears, and makes arch abutment bearing not produce horizontal thrust.At present, with concrete be the arch bridge of main material in operation process, under the load action such as temperature, vehicular load, arch rib span centre often there will be cross-bridges crack, and the obvious lower flexure strain of span centre appears in minority, and supporting capacity and road-ability ability obviously decline.
In prior art, as Chinese patent CN1483895A devises a kind of track traffic bowstring arch bridge integrated with urban road, this bowstring arch bridge to be put more energy into longitudinal and cross beam by setting, longeron of putting more energy into apply longitudinal prestressing to overcome perseverance, arch rib horizontal thrust that mobile load causes, the method materials are more, increase foundation construction expense, not easily construct to old bridge; Chinese patent CN101638883A devises a kind of arch bridge, this arch bridge arranges the component of many transmitted loads between bridge floor and arch ring, the component of transmitted load becomes radiated entends to bridge floor to be used for reducing mid span moment from arch ring, the method increases the moment of flexure of bridge floor, reduces the comfortableness of driving.
Summary of the invention
For the problems referred to above, the invention provides multi-point constraint and distributed bowstring arch bridge in a kind of arch rib face, by setting up longeron, column and diagonal web member under arch rib, reduce arch bridge mid span moment, distortion and impost horizontal thrust, arch bridge is advanced to largest span, and for improving the stressed and supporting capacity of arch bridge, reduce operating expenses simultaneously.
The present invention takes following technical scheme to realize above-mentioned purpose:
In arch rib face, multi-point constraint and distributed bowstring arch bridge arrange longeron (2), column (3) and diagonal web member (4) in arch rib (1) below, longeron (2), diagonal web member (4) and column (3) is utilized to provide multi-point constraint to arch rib (1), longeron (2) is horizontal direction, two ends are connected with arch rib (1), form the tie-rod of distributed opposing arch rib perseverance, live loading and equilibrium water horizontal sliding power; Column (3) top is connected with arch rib (1), and bottom is connected with longeron (2); Diagonal web member (4) is arranged between two columns, diagonal web member (4) top is connected with the intersection point of longeron (2) and column (3), bottom is connected with the intersection point of another column (3) and arch rib (1), forms elastic restraint support system in arch rib face.
Further technical scheme of the present invention is: longeron (2) length and arch rib (1) across footpath ratio between 0.2 ~ 0.5.
Further technical scheme of the present invention is: the bending rigidity of longeron (2) and arch rib (1) bending rigidity ratio are between 0.5 ~ 1.0.
Further technical scheme of the present invention is: the axial compression resistance rigidity of column (3) and arch rib (1) axial compression resistance stiffness ratio are between 0.25 ~ 0.5.
Further technical scheme of the present invention is: longeron (2) and column (3) are steel work.
The invention has the beneficial effects as follows:
Pass through repetition test, design multi-point constraint and distributed bowstring arch bridge in a kind of arch rib face, longeron, column and diagonal web member is set up under arch rib, multi-point constraint is provided, improves the force path of arch bridge, by the load special delivery of part in the span of arch on longeron, jointly load is carried by longeron and arch rib, increase supporting capacity and the rigidity of arch bridge, reduce arch rib mid span moment, impost horizontal thrust, increase the stability of arch rib; Reduce the control moment of arch rib span centre, namely same cross section and across under footpath, larger load can be carried; Reduce the maximum defluxion of the arch rib span centre under load action, improve road-ability; Reduce horizontal thrust and the moment of flexure of arch bridge pin, reduce ground foundation engineering amount; In arch rib section situation of the same race, improve arch bridge across footpath; Improve stability and the supporting capacity of arch; With the arch bridge across footpath, multi-point constraint and the better economic benefit of distributed bowstring arch bridge tool in arch rib face.
Accompanying drawing explanation
Fig. 1 is multi-point constraint and distributed tie-rod Deck Arch Bridges structure chart in many longerons arch rib face of the present invention;
Fig. 2 is multi-point constraint and distributed tie-rod lower bearing arch bridge structure chart in many longerons arch rib face of the present invention;
Fig. 3 is multi-point constraint and distributed tie-rod Deck Arch Bridges structure chart in single longeron arch rib face of the present invention;
Fig. 4 is multi-point constraint and distributed tie-rod Deck Arch Bridges structure chart in arch rib face of the present invention.
In figure: 1, arch rib; 2, longeron; 3, column; 4, diagonal web member.
Detailed description of the invention
Below in conjunction with accompanying drawing 1-4 and embodiment 1-3, the present invention will be described.
Embodiment 1:
Arch bridge in embodiment 1 is Deck Arch Bridges, across footpath 100.00m, reinforced concrete box shaped arch rib, clean rise is 11.10m, ratio of rise to span is 1/9, substructure main span is combined type bridge pier, Open-cut Foundation, both sides bridge platform is mortar flag stone buried abutment, Open-cut Foundation, set up longeron (2), column (3) and diagonal web member (4) in arch rib (1) below, arch rib (1) bending rigidity and compressional stiffness are respectively 7.23 × 1011kNm2,1.24 × 108kNm; Span length is respectively the horizontal steel truss longeron (2) of 20m, 35m and 50m, and its bending rigidity and compressional stiffness are 3.62 × 1011kNm2,1.24 × 108kNm respectively, and longeron (2) and arch rib are affixed; Arch rib (1) below arranges the vertical direction steel truss column (3) that 5 compressional stiffness are 3.10 × 107kNm, column (3) top and arch rib (1) are for hinged, bottom and 50m longeron (2) affixed, affixed point is respectively 15m, 20m, 25m, 30m and 35m place, column (3) shaft and another two longerons affixed; Diagonal web member (4) is set between adjacent two columns, the intersection point of diagonal web member (4) top and arch rib (1) and column is hinged, the intersection point of bottom and another column and 50m longeron (2) is affixed, and adjacent diagonal web member is interconnected.In arch rib face, the engineering cost of multi-point constraint and distributed bowstring arch bridge is about same across 73% of footpath existing arch bridge engineering-built expense, namely existing 100m is across the identical expense of the arch bridge engineering-built in footpath, adopt multi-point constraint and distributed bowstring arch bridge in arch rib face can be increased to 120m across footpath, increase supporting capacity and the rigidity of arch bridge simultaneously, reduce arch rib mid span moment, impost horizontal thrust, increase the stability of arch rib.
Embodiment 2:
Arch bridge in embodiment 2 is lower bearing arch bridge, across the reinforced concrete box shaped arch rib of footpath 100.00m, clean rise is 11.10m, ratio of rise to span is 1/9, set up longeron (2), column (3) and diagonal web member (4) in arch rib (1) below, arch rib (1) bending rigidity and compressional stiffness are respectively 7.23 × 1011kNm2,1.24 × 108kNm; Span length is respectively the horizontal steel truss longeron (2) of 20m, 40m and 50m, and its bending rigidity and compressional stiffness are 5.10 × 1011kNm2,1.24 × 108kNm respectively, and longeron (2) and arch rib are affixed; Arch rib (1) below arranges the vertical direction steel truss column (3) that 6 compressional stiffness are 4.95 × 107kNm, column (3) top and arch rib (1) are for hinged, bottom and 50m longeron (2) affixed, affixed point is respectively 15m, 19m, 23m, 27m, 31m and 35m place, column (3) shaft and another two longerons affixed; Diagonal web member (4) is set between adjacent two columns, the intersection point of diagonal web member (4) top and arch rib (1) and column is hinged, the intersection point of bottom and another column and 50m longeron (2) is affixed, and adjacent diagonal web member is interconnected.In arch rib face, the engineering cost of multi-point constraint and distributed bowstring arch bridge is about same across 75% of footpath existing arch bridge engineering-built expense, namely existing 100m is across the identical expense of the arch bridge engineering-built in footpath, adopt multi-point constraint and distributed bowstring arch bridge in arch rib face can be increased to 118m across footpath, increase supporting capacity and the rigidity of arch bridge simultaneously, reduce arch rib mid span moment, impost horizontal thrust, increase the stability of arch rib.
Embodiment 3:
Arch bridge in embodiment 3 is Deck Arch Bridges, across footpath 100.00m, reinforced concrete box shaped arch rib, clean rise is 11.10m, ratio of rise to span is 1/9, substructure main span is combined type bridge pier, Open-cut Foundation, both sides bridge platform is mortar flag stone buried abutment, Open-cut Foundation, set up longeron (2), column (3) and diagonal web member (4) in arch rib (1) below, arch rib (1) bending rigidity and compressional stiffness are respectively 7.23 × 1011kNm2,1.24 × 108kNm; Span length be 45m, bending rigidity and compressional stiffness be respectively 7.23 × 1011kNm2,1.24 × 108kNm horizontal steel truss as longeron (2), longeron (2) and arch rib are affixed; Arch rib (1) below arranges the vertical direction steel truss column (3) that 4 compressional stiffness are 6.20 × 107kNm, column (3) top and arch rib (1) are for hinged, bottom and longeron (2) affixed, affixed point is respectively 18m, 23m, 27m and 32m place, diagonal web member (4) is set between adjacent two columns, the intersection point of diagonal web member (4) top and arch rib (1) and column is hinged, the intersection point of bottom and another column and 50m longeron (2) is affixed, and adjacent diagonal web member is interconnected.In arch rib face, the engineering cost of multi-point constraint and distributed bowstring arch bridge is about same across 80% of footpath existing arch bridge engineering-built expense, namely existing 100m is across the identical expense of the arch bridge engineering-built in footpath, adopt multi-point constraint and distributed bowstring arch bridge in arch rib face can be increased to 115m across footpath, increase supporting capacity and the rigidity of arch bridge simultaneously, reduce arch rib mid span moment, impost horizontal thrust, increase the stability of arch rib.
The stressed parameter comparison of embodiment 1-3 and prior art is as following table:
Claims (5)
1. multi-point constraint and distributed bowstring arch bridge in arch rib face, it is characterized in that: in arch rib (1) below, longeron (2), column (3) and diagonal web member (4) are set, described longeron (2) is horizontal direction, and two ends are connected with arch rib (1); Column (3) top is connected with arch rib (1), and bottom is connected with longeron (2); Diagonal web member (4) is arranged between two columns, and diagonal web member (4) top is connected with the intersection point of arch rib (1) and column, and bottom is connected with the intersection point of another column and longeron (2).
2. multi-point constraint and distributed bowstring arch bridge in arch rib face according to claim 1, is characterized in that, described longeron (2) length and arch rib (1) across footpath ratio between 0.2 ~ 0.5.
3. multi-point constraint and distributed bowstring arch bridge in arch rib face according to claim 1, is characterized in that, the bending rigidity of described longeron (2) and arch rib (1) bending rigidity ratio are between 0.5 ~ 1.0.
4. multi-point constraint and distributed bowstring arch bridge in the arch rib face according to any one in claim 1-3, it is characterized in that, the axial compression resistance rigidity of described column (3) and arch rib (1) axial compression resistance stiffness ratio are between 0.25 ~ 0.5.
5. multi-point constraint and distributed bowstring arch bridge in arch rib face according to claim 1, is characterized in that, described longeron (2) and column (3) are steel work.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610020319.XA CN105507127A (en) | 2016-01-13 | 2016-01-13 | Arch rib face internal multi-point restrained and distributed tied-arch bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610020319.XA CN105507127A (en) | 2016-01-13 | 2016-01-13 | Arch rib face internal multi-point restrained and distributed tied-arch bridge |
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| CN105507127A true CN105507127A (en) | 2016-04-20 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677079A (en) * | 2017-01-09 | 2017-05-17 | 广西交通科学研究院有限公司 | Continuous arch bridge reinforcing method based on reduction of horizontal thrust of arch supports of arch bridge |
| CN106702913A (en) * | 2017-01-09 | 2017-05-24 | 广西交通科学研究院有限公司 | Reinforcement method for reverse-arch structure based on decreasing of mid-span moment of arch bridge |
| CN108411760A (en) * | 2018-04-09 | 2018-08-17 | 广西大学 | Pull rod arch bridge |
| CN108547212A (en) * | 2018-07-02 | 2018-09-18 | 西北农林科技大学 | A kind of arch bridge structure that can prevent buckling deformation in arch rib face |
| CN108677682A (en) * | 2018-08-09 | 2018-10-19 | 广西大学 | Novel Deck Arch Bridges |
| CN111032959A (en) * | 2017-08-24 | 2020-04-17 | 维也纳工业大学 | Method for manufacturing integral bridge and integral bridge |
-
2016
- 2016-01-13 CN CN201610020319.XA patent/CN105507127A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677079A (en) * | 2017-01-09 | 2017-05-17 | 广西交通科学研究院有限公司 | Continuous arch bridge reinforcing method based on reduction of horizontal thrust of arch supports of arch bridge |
| CN106702913A (en) * | 2017-01-09 | 2017-05-24 | 广西交通科学研究院有限公司 | Reinforcement method for reverse-arch structure based on decreasing of mid-span moment of arch bridge |
| CN106677079B (en) * | 2017-01-09 | 2018-06-01 | 广西交通科学研究院有限公司 | The continuous arch bridge reinforcement means reduced based on arch bridge impost horizontal thrust |
| CN106702913B (en) * | 2017-01-09 | 2018-06-01 | 广西交通科学研究院有限公司 | The antiarch structural strengthening method reduced based on arch bridge mid span moment |
| CN111032959A (en) * | 2017-08-24 | 2020-04-17 | 维也纳工业大学 | Method for manufacturing integral bridge and integral bridge |
| CN111032959B (en) * | 2017-08-24 | 2021-10-08 | 维也纳工业大学 | Method for manufacturing integral bridge and integral bridge |
| CN108411760A (en) * | 2018-04-09 | 2018-08-17 | 广西大学 | Pull rod arch bridge |
| CN108411760B (en) * | 2018-04-09 | 2023-10-03 | 广西大学 | Pull rod arch bridge |
| CN108547212A (en) * | 2018-07-02 | 2018-09-18 | 西北农林科技大学 | A kind of arch bridge structure that can prevent buckling deformation in arch rib face |
| CN108677682A (en) * | 2018-08-09 | 2018-10-19 | 广西大学 | Novel Deck Arch Bridges |
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