CN202369913U - Reconstruction structure for overline slant-legged rigid frame bridge in road widening project - Google Patents
Reconstruction structure for overline slant-legged rigid frame bridge in road widening project Download PDFInfo
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- CN202369913U CN202369913U CN 201120538599 CN201120538599U CN202369913U CN 202369913 U CN202369913 U CN 202369913U CN 201120538599 CN201120538599 CN 201120538599 CN 201120538599 U CN201120538599 U CN 201120538599U CN 202369913 U CN202369913 U CN 202369913U
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- bridge
- slant
- symmetrically arranged
- reconstruction
- rigid frame
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Abstract
The utility model relates to a reconstruction structure for an overline slant-legged rigid frame bridge in a road widening project. During widening reconstruction of freeways and arterial highways, slant-legged rigid frame bridges are dismantled because slant legs occupy the space of roads under the bridges instead of structure damage. The reconstruction structure comprises foundations, slant legs and a bridge deck, wherein beam bodies are symmetrically arranged on the bridge deck, supporting columns are symmetrically arranged outside the foundations, and a second steering device is arranged on the upper part of each supporting column; counterweight blocks are symmetrically arranged outside the supporting columns, and backstays are arranged between the counterweight blocks and the second steering devices; and first steering devices are symmetrically arranged on the bridge bodies of the bridge deck, a horizontal balancing cable is arranged between the beam bodies, and supporting cables are arranged between the first steering devices and the second steering devices. The slant-legged rigid frame bridge is not dismantled during widening reconstruction, a supporting system substitutes the slant legs to bear the entire load of the upper part of the bridge, and only a slant leg structure which affects the pass clearance of new lanes is dismantled in the construction process, so great waste can be avoided.
Description
Technical field
The utility model relates to the design and the technical field of construction of highway bridge, is specifically related to the reconstruction structure of cross-line battered leg steel structure bridge in a kind of road widening project.
Background technology
Battered leg steel structure bridge is a kind of bridge type that China generally uses, and its important use is striden speedway or arterial highway on being, transportation industry has also been published the standard drawing of this type bridge specially, in order to the popularization of this kind bridge construction.Because design maturation, reliable in structure, easy construction, handsome in appearance, the existence in a large number on the speedway of China or arterial highway of battered leg steel structure bridge.Battered leg steel structure bridge generally includes symmetrically arranged basis and battered leg, and bridge floor is set up on basis and the battered leg.
Along with the transportation industry of China is flourish, the traffic volume sharply increases, and a lot of speedways and arterial highway are badly in need of widening transformation, because the battered leg of battered leg steel structure bridge has been occupied path space under the bridge, widening of road is affected.According to present conventional way, generally can bed rearrangement battered leg steel structure bridge be removed, build new bridge crossing again at former bridge location then.
But widen the battered leg steel structure bridge that is removed when transforming at speedway and arterial highway; Usually not to be removed because of the structure disease; But since battered leg steel structure bridge support pier---battered leg has been occupied path space under the bridge, make the current headroom in the track of widening not enough, finally be removed.After removing battered leg steel structure bridge, in order to guarantee the current of overpass road, relevant departments also will be at the newly-built bridge of striding the footpath more greatly of former bridge location.This helpless way is not only wasted huge, of a high price, and long construction period, needs long-time blocking-up traffic, and social influence is big.
Summary of the invention
The utility model provides the reconstruction structure of cross-line battered leg steel structure bridge in a kind of road widening project, to overcome the problem of huge, the of a high price and long construction period of waste that prior art exists.
For overcoming the problem that prior art exists; The technical scheme that the utility model provides is: the reconstruction structure of cross-line battered leg steel structure bridge in a kind of road widening project; Comprise basis, battered leg and bridge floor; Be symmetrically arranged with the beam body on the bridge floor, it is characterized in that: the outside, basis is symmetrical set support column, and the top of support column is provided with second steering gear; The support column outside is symmetrically arranged with balancing weight, between the balancing weight and second steering gear, is provided with dorsal funciculus; Be symmetrically arranged with first steering gear on the beam body of bridge floor, be provided with the horizontal equilibrium rope between the beam body, be provided with supporting cables between first steering gear and second steering gear.
Compared with prior art, the utility model has the advantages that:
1, widens when transforming at speedway or arterial highway; Do not remove whole battered leg steel structure bridges; But adopt a kind of novel support system, and substitute the effect of battered leg, bear whole bridge upper loads; Therefore only get final product in the work progress, therefore can avoid very big waste with the battered leg structure of removing the current headroom in the newly-increased track of influence;
2, the normal current of bridge crossing can be guaranteed in construction period, interruption of communication can be do not caused;
3, all increase the construction of member newly, and are very little to the speedway or the arterial highway influence of being crossed over, and can not cause speedway or arterial highway interruption of communication;
4, the remodeling method of the utility model utilizes the original structure thing as far as possible, under the prerequisite of not removing these works, can practice thrift a large amount of construction costs;
5, only remove the battered leg structure that influences the current headroom of widening road in the remodeling method of the utility model, the whole construction period shortens significantly.
Description of drawings:
Fig. 1 is the structural representation of common cross-line battered leg steel structure bridge;
Fig. 2 is the influence figure of cross-line battered leg steel structure bridge to road widening;
Fig. 3 is the constructing structure figure of the utility model.
Description of reference numerals is following:
The 1-supporting cables, 2-dorsal funciculus, 3-horizontal equilibrium rope, 4-support column, 5-balancing weight, 6-first steering gear, 7-second steering gear, 8-basis, 9-battered leg, 10-bridge floor.
The specific embodiment:
To combine accompanying drawing and embodiment that the utility model is at length explained below.
Referring to Fig. 1 and Fig. 2, common battered leg steel structure bridge generally include symmetrically arranged basic 8 with battered leg 9, bridge floor 10 be set up in the basis 8 with battered leg 9 on.But battered leg steel structure bridge support pier---battered leg 9 has been occupied path space under the bridge, make the current headroom in the track of widening not enough, widening of road is affected.
Referring to Fig. 3, the reconstruction structure of cross-line battered leg steel structure bridge in a kind of road widening project that the utility model provides comprises support column 4, balancing weight 5, basis 8, battered leg 9 and bridge floor 10, is symmetrically arranged with the beam body on the bridge floor 10.Said basic 8 outsides are symmetrical set support column 4, and the top of support column 4 is provided with second steering gear 7; Support column 4 outsides are symmetrically arranged with balancing weight 5, between the balancing weight 5 and second steering gear 7, are provided with dorsal funciculus 2; Be symmetrically arranged with first steering gear 6 on the beam body of bridge floor 10, be provided with between the beam body between 3, the first steering gears 6 of horizontal equilibrium rope and second steering gear 7 and be provided with supporting cables 1.
Member function introduction wherein is following:
Supporting cables 1---replace the effect of battered leg, support all loads on bridge top;
Dorsal funciculus 2---connect the balancing weight 5 and second steering gear 7, the horizontal force that balanced support rope 1 produces;
Horizontal equilibrium rope 3---connect two supporting cables 1, the horizontal force that balanced support rope 1 produces;
The vertical force of support column 4---balanced support rope 1 and dorsal funciculus 2 generations;
Horizontal force and vertical force that balancing weight 5---balance dorsal funciculus 2 produces;
First steering gear 6---be arranged at Liang Tishang, the internal force between balanced support rope 1 and the horizontal equilibrium rope 3;
Second steering gear 7---be arranged at support column 4 tops, the internal force between balanced support rope 1 and the dorsal funciculus 2.
Construction comprises the steps:
1, is symmetrical set support column 4 in basic 8 outsides, second steering gear 7 is set on the top of support column 4;
2, symmetry is installed balancing weight 5 in the outside of support column 4;
3, dorsal funciculus 2 is installed between the balancing weight 5 and second steering gear 7;
4, symmetry is installed first steering gear 6 at the beam body place of bridge floor 10;
5, horizontal equilibrium rope 3 is installed between the beam body of bridge floor 10;
6, supporting cables 1 is installed on first steering gear 6 and the bridge floor between the end of horizontal equilibrium rope 3;
7, adopt interim supporting way, be supported on two side positions of each battered leg 9, remove battered leg 9; Simultaneously, symmetrical stage by stage stretch-draw supporting cables 1, dorsal funciculus 2 and horizontal equilibrium rope 3;
8, adjust the Suo Li value of supporting cables 1, dorsal funciculus 2 and horizontal equilibrium rope 3;
9, cleaning construction plant, final acceptance of construction.
Claims (1)
1. the reconstruction structure of cross-line battered leg steel structure bridge in the road widening project comprises basis (8), battered leg (9) and bridge floor (10), and bridge floor is symmetrically arranged with the beam body on (10), it is characterized in that:
The outside, basis (8) is symmetrical set support column (4), and the top of support column (4) is provided with second steering gear (7); Support column (4) outside is symmetrically arranged with balancing weight (5), between balancing weight (5) and second steering gear (7), is provided with dorsal funciculus (2); Be symmetrically arranged with first steering gear (6) on the beam body of bridge floor (10), be provided with horizontal equilibrium rope (3) between the beam body, be provided with supporting cables (1) between first steering gear (6) and second steering gear (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120538599 CN202369913U (en) | 2011-12-21 | 2011-12-21 | Reconstruction structure for overline slant-legged rigid frame bridge in road widening project |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120538599 CN202369913U (en) | 2011-12-21 | 2011-12-21 | Reconstruction structure for overline slant-legged rigid frame bridge in road widening project |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202369913U true CN202369913U (en) | 2012-08-08 |
Family
ID=46593622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120538599 Expired - Fee Related CN202369913U (en) | 2011-12-21 | 2011-12-21 | Reconstruction structure for overline slant-legged rigid frame bridge in road widening project |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202369913U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266574A (en) * | 2013-05-02 | 2013-08-28 | 浙江大学 | Simply-supported box girder bridge strengthening method with oblique cables |
| CN105256720A (en) * | 2015-09-17 | 2016-01-20 | 中铁大桥科学研究院有限公司 | Partial ground anchor balancing cable cable-stayed bridge |
-
2011
- 2011-12-21 CN CN 201120538599 patent/CN202369913U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266574A (en) * | 2013-05-02 | 2013-08-28 | 浙江大学 | Simply-supported box girder bridge strengthening method with oblique cables |
| CN103266574B (en) * | 2013-05-02 | 2015-06-03 | 浙江大学 | Simply-supported box girder bridge strengthening method with oblique cables |
| CN105256720A (en) * | 2015-09-17 | 2016-01-20 | 中铁大桥科学研究院有限公司 | Partial ground anchor balancing cable cable-stayed bridge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20201221 |