CN103452053B - The antidumping bracing means of Single column pier bridge - Google Patents
The antidumping bracing means of Single column pier bridge Download PDFInfo
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- CN103452053B CN103452053B CN201310363760.4A CN201310363760A CN103452053B CN 103452053 B CN103452053 B CN 103452053B CN 201310363760 A CN201310363760 A CN 201310363760A CN 103452053 B CN103452053 B CN 103452053B
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Abstract
The invention discloses the antidumping bracing means of a kind of Single column pier bridge, include only post bridge pier, widening structure is set in the upper end of described only post bridge pier, the top of described widening structure is provided with bearing. The antidumping bracing means of a kind of Single column pier bridge provided by the invention, in or condition not permission situation limited at space under bridge, by the middle Single column pier width of continuous box girder is set up steel bent cap, steel bent cap changes and sets double support, by the setting of double support, straight bridge is reduced unbalance loading impact, can effectively improve twisting moment for curved, skew bridge, improve bridging apparatus stress, reduce potential safety hazard.
Description
Technical field
The present invention relates to the design of Single column pier bridge substructure pier stud, particularly relate to the antidumping bracing means of a kind of Single column pier bridge.
Background technology
At present, Single column pier Continuous Box Girder Bridge, there is because of it advantages such as saving occupation of land, vision is penetrating, the lines flow smoothly, good looking appearance, be widely used in highway bridge. And also there is succinct, smooth profile, and take the features such as space under bridge is little, then it is light and handy to be equipped with profile, overall bridge attractive in appearance, it is widely used in Urban Bridge and high speed Interchange Ramp.
But along with China's expanding economy, traffic flow, the continuous increase of vehicular load, overweight vehicle unbalance loading causes domestic having recurred a lot of Single column pier box girder bridge in recent years and toppling collapse accident, and the equipment safety problem of existing Single column pier beam bridge becomes increasingly conspicuous.
Single column pier, as a kind of bridge structure form common abroad, is adjusted and loading test if carried out bearing capacity accurately, security incident generally can't be occurred.
But owing to Single column pier adopts single fulcrum support at direction across bridge, under the horizontal uneven loading action of automobile, it is unfavorable that the horizontal antidumping of bridge is stablized, substantial amounts of fact proved, reaching certain value at overload condition, under accidental Under Eccentric Loading, Single column pier bridge is it may happen that horizontal overall collapse. In the face of the basic present situation that highway in China transport overload condition is more serious, the stress defect of Single column pier bridge own, overload of vehicle row, driver partially lack safe driving knowledge, the domestic a large amount of solely post bridge piers being currently in use all are made all to there is certain potential safety hazard, it is thus desirable to pay much attention to, existing Single column pier bridge carries out investigation reinforce, reinforcement bridge use safety, uses less as far as possible newly design bridge, disables Single column pier device.
In order to prevent the tragedy of Single column pier bridge collapse from not recurring, the activity that many provinces, the whole nation all expand Single column pier bridge investigation, reinforce now, main reinforcement measure has two kinds:
If 1 space under bridge allows, column can be set up by former pier stud.
If there being other buildings under 2 bridges, or condition does not allow, and can set up bent cap at former pier stud top, improve device stress.
In practice of construction, the Scheme of Strengthening that reinforcement measure uses, is usually jack-up top beam body after setting up support under existing bridge pier, by an existing bridge pier pier top concrete chisel removal part, set up concrete bent cap, after concrete strength is formed, change single support be designed as double support design.
But this method long construction period, difficulty of construction is bigger.
Summary of the invention
The technical problem to be solved in the present invention is, thering is provided the antidumping bracing means of a kind of Single column pier bridge, Single column pier sets up steel bent cap by spelling width, and the single support on steel bent cap is re-established as double support, unbalance loading impact can be reduced, can effectively improve twisting moment for curved, skew bridge.
In order to solve above-mentioned technical problem, the invention provides the antidumping bracing means of a kind of Single column pier bridge, include only post bridge pier, widening structure is set in the upper end of described only post bridge pier, the top of described widening structure is provided with bearing.
Further, the upper end of described only post bridge pier is provided with steel hoop, and its circumferencial direction of upper end edge of described only post bridge pier is provided with bar planting, and described steel hoop passes through plant anchor in the upper end of only post bridge pier.
Further, described steel hoop is two semicircle steel hoops, and two described semicircle steel hoops constitute an entirety by fastening bolt and welding.
Further, the circumferencial direction of described steel hoop is provided with web.
Further, described web is steel corbel web, and described steel corbel web is welded on steel hoop.
Further, the periphery of described web is closed by terminating plate.
Further, the top of described only post bridge pier is provided with steel top board, and steel hoop and steel corbel web are connected into an entirety by described steel top board.
Further, the top of described steel top board is provided with bearing.
Further, described bearing is two.
Further, being provided with bearing pad stone between described bearing and steel top board, described bearing pad stone is the bearing pad stone of steel, and described bearing pad stone is welded on steel top board.
The present invention provides the antidumping bracing means of a kind of Single column pier bridge, in or condition not permission situation limited at space under bridge, by the middle Single column pier width of continuous box girder is set up steel bent cap, steel bent cap changes and sets double support, by the setting of double support, straight bridge is reduced unbalance loading impact, can effectively improve twisting moment for curved, skew bridge, improve bridging apparatus stress, reduce potential safety hazard.
Accompanying drawing explanation
Fig. 1 is the antidumping bracing means elevational schematic view of Single column pier bridge of the present invention;
Fig. 2 is the antidumping bracing means floor map of Single column pier bridge of the present invention.
In figure, 1. only post bridge pier, 2. steel hoop, 3. bar planting, 4. web, 5. fastening bolt, 6. steel top board, 7. end-blocking plate, 8. bearing.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described, so that those skilled in the art can be better understood from the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
The present invention provides the antidumping bracing means of the Single column pier bridge of a kind of armored concrete, as depicted in figs. 1 and 2, the upper end of described only post bridge pier 1 is provided with widening structure, the top of described widening structure is provided with bearing 8.
The upper end of described only post bridge pier 1 is provided with steel hoop 2, two steel hoops constitute an entirety by fastening bolt 5 and welding, its circumferencial direction of upper end edge of described only post bridge pier 1 is provided with bar planting 3, described steel hoop 2 is anchored at the upper end of only post bridge pier 1 by bar planting 3, only post bridge pier 1 is existing bridge pier, circumference at only post bridge pier 1 carries out chemically-planted steel bar 3, and steel hoop 2 welds with chemically-planted steel bar 3 and be fixed on the outer surface of only post bridge pier 1.
Described steel hoop 2 is two semicircle steel hoops, and two described semicircle steel hoops first pass through fastening and are bolted together, then the butt seam of two semicircle steel hoops welds. Welding is connected into an entirety by two semicircles by steel hoop 2, to be conducive to steel bent cap and concrete Single column pier cooperative bearing.
The circumferencial direction of described steel hoop 2 is provided with web 4, described web 4 is steel corbel web, described steel corbel web uniform welding is on steel hoop 2, each block of steel corbel web is thus made all to go stress and stress is equal in magnitude, ensure that the broadening structure stress of whole only post bridge pier 1 is uniform, the periphery of described web 2 is closed by terminating plate 7, to increase overall structure air-tightness.
Complete steel bent cap of constructing is a locking device, it is ensured that the air-tightness of device, favourable anticorrosion.
The top of described only post bridge pier 1 is provided with steel top board 6, and steel hoop 2 and steel corbel web are connected into an entirety by described steel top board 6. The top of described steel top board 6 is provided with bearing 8, and described bearing 8 is two. Thus the single support device of only post bridge pier 1 is become double support device, reduce the unbalance loading impact of straight bridge, reduce potential safety hazard.
Being provided with bearing pad stone between described bearing 8 and steel top board 6, described bearing pad stone is the bearing pad stone of steel, and described bearing pad stone is welded on steel top board 6.
Specific embodiments of the invention, existing only post bridge pier 1 is set up two semicircle steel hoops 2, two steel hoops are by fastening bolt 5 and constituting an entirety to welding, steel hoop is anchored on existing only post bridge pier 1 by chemically-planted steel bar 3, steel corbel web 4 is welded on steel hoop 2, arranging steel top board 6 on the capital of only post bridge pier, connect as a whole by steel top board 6 by both sides steel hoop 2 and steel corbel web, steel corbel web is closed again through end-blocking plate 7. Arranging two bearings 8 on steel top board, be provided with bearing pad stone between described bearing 8 and steel top board 6, described bearing pad stone is the bearing pad stone of steel, and described bearing pad stone is welded on steel top board 6.
By adding steel bent cap to only post bridge pier is broadening, steel bent cap is changed by single support and sets double support, by arranging of double support, straight bridge can be reduced unbalance loading impact, twisting moment is effectively improved for curved, skew bridge, improve bridging apparatus stress, reduce potential safety hazard.
Embodiment described above is only the preferred embodiment lifted for absolutely proving the present invention, and protection scope of the present invention is not limited to this. Equivalent replacement that those skilled in the art make on basis of the present invention or conversion, all within protection scope of the present invention. Protection scope of the present invention is as the criterion with claims.
Claims (5)
1. the antidumping bracing means of a Single column pier bridge, include only post bridge pier, it is characterized in that, in the upper end of described only post bridge pier, widening structure is set, two bearings it are provided with on the top of described widening structure, the upper end of described only post bridge pier is provided with steel hoop, its circumferencial direction of upper end edge of described only post bridge pier is provided with bar planting, described steel hoop passes through plant anchor in the upper end of only post bridge pier, described steel hoop is two semicircle steel hoops, two described semicircle steel hoops constitute an entirety by fastening bolt and welding, the circumferencial direction of described steel hoop is provided with web, the top of described only post bridge pier is provided with steel top board, steel hoop and web are connected into an entirety by described steel top board.
2. the antidumping bracing means of Single column pier bridge according to claim 1, it is characterised in that described web is steel corbel web, described steel corbel web is welded on steel hoop.
3. the antidumping bracing means of Single column pier bridge according to claim 2, it is characterised in that the periphery of described web is closed by terminating plate.
4. the antidumping bracing means of Single column pier bridge according to claim 3, it is characterised in that the top of described steel top board is provided with bearing.
5. the antidumping bracing means of Single column pier bridge according to claim 4, it is characterised in that be provided with bearing pad stone between described bearing and steel top board, described bearing pad stone is the bearing pad stone of steel, and described bearing pad stone is welded on steel top board.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310363760.4A CN103452053B (en) | 2013-08-20 | 2013-08-20 | The antidumping bracing means of Single column pier bridge |
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| CN201310363760.4A CN103452053B (en) | 2013-08-20 | 2013-08-20 | The antidumping bracing means of Single column pier bridge |
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| CN103452053A CN103452053A (en) | 2013-12-18 |
| CN103452053B true CN103452053B (en) | 2016-06-08 |
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| CN103774555B (en) * | 2013-12-30 | 2016-04-27 | 江苏省交通工程集团有限公司 | Bridge pier shaft widens template |
| CN103774546A (en) * | 2014-01-20 | 2014-05-07 | 南通东南公路工程有限公司 | Anti-inclination bridge structure |
| CN104631300B (en) * | 2014-12-23 | 2016-08-17 | 浙江工业大学 | A kind of Single column pier beam bridge antidumping bearing capacity computation method |
| CN104514202B (en) * | 2014-12-23 | 2016-08-24 | 浙江工业大学 | A kind of Single column pier beam bridge antidumping reinforcement means |
| CN105970799B (en) * | 2016-05-18 | 2018-04-10 | 清华大学 | A kind of construction for preventing bridge lateral from toppling and its construction method |
| CN108532474B (en) * | 2018-03-29 | 2020-05-15 | 中冶华天工程技术有限公司 | Overturn-preventing reinforcing device and installation method for single-column pier bridge |
| CN110499701A (en) * | 2018-05-18 | 2019-11-26 | 李竑靓 | A kind of bridge construction ruggedized construction and its reinforcement means |
| CN109322893A (en) * | 2018-12-12 | 2019-02-12 | 保定华铁电气化供电器材设备有限公司 | A kind of bolt anti-corrosion protective device |
| CN109989360A (en) * | 2019-03-26 | 2019-07-09 | 中铁七局集团有限公司 | A kind of Railway Bridges And Piers Vertical Cracks bracing means and its reinforcement means |
| CN110863422A (en) * | 2019-11-26 | 2020-03-06 | 上海市基础工程集团有限公司 | Tool type overturn-preventing reinforcing device for precast concrete box girder with anti-collision wall |
| CN110835889B (en) * | 2019-12-20 | 2021-04-20 | 招商局重庆交通科研设计院有限公司 | Single-column pier type viaduct reinforcing device |
| CN112342896A (en) * | 2020-10-28 | 2021-02-09 | 中铁桥隧技术有限公司 | Anti-overturning structure of single-column pier bridge and construction method thereof |
| CN112376409A (en) * | 2020-12-04 | 2021-02-19 | 张家港保税区金港建设工程质量检测有限公司 | Composite reinforced pier with circular single-column pier sleeved with horn-shaped straight-line curved-surface column and construction method thereof |
| CN112575696A (en) * | 2020-12-16 | 2021-03-30 | 无锡市政设计研究院有限公司 | Anti-overturning reinforcing structure applied to single-column pier bridge and installation method |
| CN114214969A (en) * | 2021-12-01 | 2022-03-22 | 广州市市政工程设计研究总院有限公司 | Width splicing structure and method of width splicing bridge |
| CN114703768B (en) * | 2022-03-10 | 2024-01-30 | 东南大学 | Anti-overturning and safety early warning device for existing single-pier bridge |
| CN114575272A (en) * | 2022-04-06 | 2022-06-03 | 交通运输部公路科学研究所 | Single-column pier transverse bridge anti-overturning reinforcing limiting device |
| CN114775461A (en) * | 2022-04-07 | 2022-07-22 | 清华大学 | Concrete bridge widening and reinforcing structure and construction method thereof |
| CN115058988A (en) * | 2022-08-03 | 2022-09-16 | 悉地（苏州）勘察设计顾问有限公司 | Transformation method of overhead single-column pier bridge |
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