CN103821080A - Girder deflection control device of simply supported girder bridge - Google Patents
Girder deflection control device of simply supported girder bridge Download PDFInfo
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- CN103821080A CN103821080A CN201410060861.9A CN201410060861A CN103821080A CN 103821080 A CN103821080 A CN 103821080A CN 201410060861 A CN201410060861 A CN 201410060861A CN 103821080 A CN103821080 A CN 103821080A
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- main girder
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 32
- 239000010959 steel Substances 0.000 claims abstract description 32
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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Abstract
本发明提供一种简支梁桥的主梁挠度控制装置，包括与主梁平行设置的可压缩螺旋体，所述螺旋体的两端上部分别与支撑主梁的两个桥墩固定连接，下部为自由端；在主梁的跨中位置竖向设置有钢杆，所述钢杆连接在主梁和螺旋体之间；在两个桥墩的前后两侧分别固定有滑轮，所述钢杆上固定有绳索，所述绳索的另一端分别跨过滑轮后交叉固定在螺旋体的下部。本发明提供的简支梁桥的主梁挠度控制装置，结构简单、能有效地控制主梁挠度，而且在极端情况下能提供支撑和耗能作用，从而大大提升了主梁的安全系数，减少生命财产损失。
The invention provides a main girder deflection control device of a simply supported girder bridge, comprising a compressible helix arranged parallel to the main girder, the upper parts of the two ends of the helical body are respectively fixedly connected with two piers supporting the main girder, and the lower part is a free end A steel rod is vertically arranged at the mid-span position of the main girder, and the steel rod is connected between the main girder and the spiral body; pulleys are respectively fixed on the front and rear sides of the two piers, and a rope is fixed on the steel rod, The other ends of the ropes are crossed and fixed on the lower part of the spiral body after crossing the pulleys respectively. The main girder deflection control device of a simply supported girder bridge provided by the present invention has a simple structure, can effectively control the main girder deflection, and can provide support and energy dissipation in extreme cases, thereby greatly improving the safety factor of the main girder and reducing Loss of life and property.
Description
Technical field
The Main Girder Deflection control device of a kind of control device, particularly a kind of simply supported girder bridge in the bridge field the present invention relates to.
Background technology
Simply supported girder bridge has obtained application very widely in infrastructure, is also the multiple colony of accident.In order to ensure the safe operation of simply supported girder bridge, need to the amount of deflection situation of girder be monitored and be controlled, once because excessive amount of deflection appears in girder, can have influence on the normal current of bridge floor, and cause the change of line style, and then change internal force distribution situation, cause structural deterioration.Prior art concentrates on the monitoring aspect to Main Girder Deflection mostly, as the deflection of bridge structure measuring system based on wireless tilt, obtains deflection value with wireless tilt angle sensor and corresponding data processing unit.But it is inadequate only carrying out deflection monitoring, need to cross large deflection to girder and intervene timely and effectively and control and could really guarantee bridge security, be therefore necessary the Main Girder Deflection control device of continual exploitation for simply supported girder bridge.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, the Main Girder Deflection control device of a kind of simple and effective ground simply supported girder bridge is provided.
A Main Girder Deflection control device for simply supported girder bridge, comprises the compressible conveyor screw be arrangeding in parallel with girder, and top, described spirochetal two ends is fixedly connected with two bridge piers of support girder respectively, and bottom is free end; Span centre position at girder is vertically provided with steel pole, and described steel pole is connected between girder and conveyor screw; Both sides, front and back at two bridge piers are fixed with respectively pulley, on described steel pole, are fixed with rope, and after the other end of described rope strides across respectively pulley, intersection is fixed on spirochetal bottom.
Further, the Main Girder Deflection control device of simply supported girder bridge as above, is fixed with 4 ropes on steel pole, and after the other end of these 4 ropes strides across respectively pulley, intersection is fixed on spirochetal bottom.
Further, the Main Girder Deflection control device of simply supported girder bridge as above, described rope is wire rope.
Further, the Main Girder Deflection control device of simply supported girder bridge as above, described conveyor screw is steel conveyor screw.
The Main Girder Deflection control device of simply supported girder bridge provided by the invention, simple in structure, can effectively control Main Girder Deflection, and under extreme case, can provide support and power consumption effect, thus greatly promote the safety factor of girder, reduce life and property loss.
Accompanying drawing explanation
Fig. 1 is the Main Girder Deflection control device structural representation of simply supported girder bridge of the present invention;
Fig. 2 is the top view of Fig. 1.
The specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the Main Girder Deflection control device structural representation of simply supported girder bridge of the present invention; Fig. 2 is the top view of Fig. 1, as shown in Figures 1 and 2, the Main Girder Deflection control device of simply supported girder bridge provided by the invention comprises the compressible steel conveyor screw 2 be arrangeding in parallel with girder 1, the top, two ends of described steel conveyor screw 2 is fixedly connected with two bridge piers 3 of support girder 1 respectively, and bottom is free end; Span centre position at girder 1 is vertically provided with steel pole 4, and described steel pole 4 is connected between girder 1 and conveyor screw 2; Be fixed with respectively pulley 5 (shown in Fig. 2) in the both sides, front and back of two bridge piers 3, be fixed with 4 wire rope on described steel pole 4, the other end of these 4 wire rope strides across respectively the rear intersection of pulley 5 and is fixed on the bottom of steel conveyor screw 2.
Particularly, first arrange steel conveyor screw 2 in the lower parallel of girder 1, steel conveyor screw 2 does not fit tightly together, can be compressed, the top of every end is separately fixed on two bridge piers 3 of support girder 1, there is the steel pole 4 of vertical layout to connect girder 1 and steel conveyor screw 2 in the span centre position of girder 1, on two bridge piers 3, be fixed with respectively two pulleys 5, after the pulley 5 of two wire rope 6 in steel pole 4 left sides by left side, be separately fixed at the both sides of steel conveyor screw 2 right-hand member bottoms, after the pulley 5 of two wire rope 7 on steel pole 4 right sides by right side, be separately fixed at the both sides of steel conveyor screw 2 left end bottoms.
Operating principle: in the time that there is downwarp at the span centre place of girder 1, the steel pole 4 being fixed on herein can be along with decline, wire rope 6 and 7 to the left and right sides produces pulling force, this pulling force passes to the other end of wire rope 6 and 7 by pulley 5, the namely lower position of steel conveyor screw 2 left and right end portions, makes the bottom pressurized of conveyor screw 2 and compresses.In the time that the bottom of steel conveyor screw 2 is compressed to the limit, will stops the decline of steel pole 4, and then make girder 1 that downwarp no longer occur.
The present invention is under the extreme cases such as severe earthquake action, even if there is fracture or fall in girder, the pulling force that wire rope is subject to simultaneously makes its fracture, here the steel conveyor screw of arranging also can play good support and power consumption effect to girder, avoids causing people current on girder or vehicle to produce very large loss.
This device simple in structure, can effectively control Main Girder Deflection, and under extreme case, can provide support and power consumption effect, thereby greatly promote the safety factor of girder, reduce life and property loss.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (4)
1. the Main Girder Deflection control device of a simply supported girder bridge, it is characterized in that, comprise the compressible conveyor screw (2) be arrangeding in parallel with girder (1), the top, two ends of described conveyor screw (2) is fixedly connected with two bridge piers (3) of support girder (1) respectively, and bottom is free end; Vertically be provided with steel pole (4) in the span centre position of girder (1), described steel pole (4) is connected between girder (1) and conveyor screw (2); Be fixed with respectively pulley (5) in the both sides, front and back of two bridge piers (3), described steel pole is fixed with rope on (4), and the other end of described rope strides across respectively to intersect after pulley (5) and is fixed on the bottom of conveyor screw (2).
2. the Main Girder Deflection control device of simply supported girder bridge according to claim 1, it is characterized in that, on steel pole (4), be fixed with 4 ropes, the other end of these 4 ropes strides across respectively to intersect after pulley (5) and is fixed on the bottom of conveyor screw (2).
3. the Main Girder Deflection control device of simply supported girder bridge according to claim 1 and 2, is characterized in that, described rope is wire rope.
4. the Main Girder Deflection control device of simply supported girder bridge according to claim 1 and 2, is characterized in that, described conveyor screw (2) is steel conveyor screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410060861.9A CN103821080B (en) | 2014-02-24 | 2014-02-24 | The Main Girder Deflection control device of simply supported girder bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410060861.9A CN103821080B (en) | 2014-02-24 | 2014-02-24 | The Main Girder Deflection control device of simply supported girder bridge |
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| Publication Number | Publication Date |
|---|---|
| CN103821080A true CN103821080A (en) | 2014-05-28 |
| CN103821080B CN103821080B (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410060861.9A Expired - Fee Related CN103821080B (en) | 2014-02-24 | 2014-02-24 | The Main Girder Deflection control device of simply supported girder bridge |
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| CN (1) | CN103821080B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411797A (en) * | 2018-02-09 | 2018-08-17 | 广西交通科学研究院有限公司 | Vault amount of deflection control method in Catenary arch arch springing increasing section strengthening construction |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020021620A (en) * | 2001-10-09 | 2002-03-21 | 주식회사 오케이컨설턴트 | Method and its devices to shrengthen a bridge by exfermal presfressing cable |
| KR100768725B1 (en) * | 2007-03-29 | 2007-10-19 | 주식회사 동진이엔지 | Girder of temporary bridge using round tube |
| CN101215824A (en) * | 2008-01-07 | 2008-07-09 | 重庆交通大学 | External transverse tension prestressing device for late-stage deflection control of long-span continuous steel bridges |
| JP4310379B2 (en) * | 2003-11-04 | 2009-08-05 | 三井住友建設株式会社 | How to build a bridge |
| JP2011179299A (en) * | 2010-02-26 | 2011-09-15 | Kunihiko Tanabe | Hybrid prestressed tubing steel (hbpts or hbp tubing steel) floor slab using hbp tubing steel 5 |
| CN203307734U (en) * | 2013-05-24 | 2013-11-27 | 许宏元 | External prestress tensioning and controlling system |
-
2014
- 2014-02-24 CN CN201410060861.9A patent/CN103821080B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020021620A (en) * | 2001-10-09 | 2002-03-21 | 주식회사 오케이컨설턴트 | Method and its devices to shrengthen a bridge by exfermal presfressing cable |
| JP4310379B2 (en) * | 2003-11-04 | 2009-08-05 | 三井住友建設株式会社 | How to build a bridge |
| KR100768725B1 (en) * | 2007-03-29 | 2007-10-19 | 주식회사 동진이엔지 | Girder of temporary bridge using round tube |
| CN101215824A (en) * | 2008-01-07 | 2008-07-09 | 重庆交通大学 | External transverse tension prestressing device for late-stage deflection control of long-span continuous steel bridges |
| JP2011179299A (en) * | 2010-02-26 | 2011-09-15 | Kunihiko Tanabe | Hybrid prestressed tubing steel (hbpts or hbp tubing steel) floor slab using hbp tubing steel 5 |
| CN203307734U (en) * | 2013-05-24 | 2013-11-27 | 许宏元 | External prestress tensioning and controlling system |
Non-Patent Citations (3)
| Title |
|---|
| 徐伟炜等: "无粘结只能预应力简支梁的力学性能研究", 《工程力学》 * |
| 王景全等: "铁路梁桥挠度智能主动控制", 《交通运输工程学报》 * |
| 马中军: "钢纤维钢筋混凝土短梁的弯曲性能试验研究", 《水利水电技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411797A (en) * | 2018-02-09 | 2018-08-17 | 广西交通科学研究院有限公司 | Vault amount of deflection control method in Catenary arch arch springing increasing section strengthening construction |
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| Publication number | Publication date |
|---|---|
| CN103821080B (en) | 2015-08-26 |
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