CN203403373U - Antidumping reinforcing device of single-column pier bridge - Google Patents
Antidumping reinforcing device of single-column pier bridge Download PDFInfo
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- CN203403373U CN203403373U CN201320508520.4U CN201320508520U CN203403373U CN 203403373 U CN203403373 U CN 203403373U CN 201320508520 U CN201320508520 U CN 201320508520U CN 203403373 U CN203403373 U CN 203403373U
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- overturning
- slip resistance
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Abstract
The utility model discloses an antidumping reinforcing device of a single-column pier bridge. The antidumping reinforcing device comprises a single-column pier. A widening structure is arranged at the upper end of the single-column pier, and supports are arranged at the top end of the widening structure. According to the antidumping reinforcing device of the single-column pier bridge, under the condition that space under the bridge is limited or conditions are not met, the certain middle single-column pier of a continuous box girder is additionally provided with a steel covering girder, the two supports are arranged on the steel covering girder in an improved mode, as the two supports are arranged, unbalance loading influences on the linear bridge are reduced, the torsional torque of the curved bridge and the skew bridge can be effectively improved, the stress on the antidumping reinforcing device is improved, and the potential safety hazards are reduced.
Description
Technical field
The utility model relates to only stub bridge substructure pier stud design, relates in particular to a kind of overturning or slip resistance analysis bracing means of only stub bridge.
Background technology
At present, solely stub Continuous Box Girder Bridge, has the advantages such as the occupation of land of saving, vision is penetrating, the lines flow smoothly, good looking appearance because of it, in highway bridge, is widely used.And there is succinct, smooth profile, and take the features such as space under bridge is little, then it being light and handy to be equipped with profile, whole bridge attractive in appearance, is widely used in Urban Bridge and high speed Interchange Ramp.
But along with China's expanding economy, the magnitude of traffic flow, the continuous increase of vehicular load, overweight vehicle unbalance loading causes domestic a lot of only stub box girder bridges collapse accident that topples that recurred in recent years, and the equipment safety problem of existing only stub beam bridge becomes increasingly conspicuous.
Solely stub, as a kind of common bridge construction form abroad, is adjusted and loading test if carried out supporting capacity accurately, generally can't occur security incident.
But because only stub adopts single fulcrum support at direction across bridge, under the horizontal uneven loading action of automobile, it is unfavorable that the horizontal overturning or slip resistance analysis of bridge is stablized, a large amount of fact proved, in overload situation, reach certain value, accidentally, under Under Eccentric Loading, may there is transverse integral unstability in stub bridge solely.In the face of the more serious basic real national conditions of highway in China transportation overload situation, solely row, driver lack safe driving knowledge partially for the stressed defect of stub bridge itself, overload of vehicle, all make the domestic a large amount of solely post bridge piers that using all have certain potential safety hazard, therefore need to pay much attention to, existing only stub bridge is investigated to reinforcing, strengthen bridge and use safety, to new design bridge as far as possible few with, forbid only stub device.
For the tragedy that prevents only stub bridge collapse is not being recurred, the activity that many provinces, the whole nation have all been launched only stub bridge investigation, reinforced now, main reinforcement measure has two kinds:
If 1 space under bridge allows, can be at the other column of setting up of former pier stud.
If there are other buildings under 2 bridges, or condition do not allow, and can set up bent cap at former pier stud top, improves device stressed.
In practice of construction, the Scheme of Strengthening that reinforcement measure is used, is generally jack-up top beam body set up support under existing bridge pier after, by an existing bridge pier pier top concrete chisel removal part, set up concrete bent cap, after concrete strength forms, change single support and be designed to double support design.
But this method long construction period, difficulty of construction is larger.
Utility model content
The technical problems to be solved in the utility model is, a kind of overturning or slip resistance analysis bracing means of only stub bridge is provided, and solely stub, by spelling the wide steel bent cap of setting up, is re-established as double support by the single support on steel bent cap, unbalance loading impact can be reduced, for curved, skew bridge, twisting moment can be effectively improved.
In order to solve the problems of the technologies described above, the utility model provides a kind of overturning or slip resistance analysis bracing means of only stub bridge, includes only post bridge pier, in the upper end of described only post bridge pier, widening structure is set, and on 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 the upper end edge of described only post bridge pier is provided with bar planting, and described steel hoop is anchored at the upper end of only post bridge pier by bar planting.
Further, described steel hoop is two semicircle steel hoops, and two described semicircle steel hoops form an integral body by fastening bolt and welding.
Further, on the circumferencial direction of described steel hoop, be 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 sealed by end-blocking plate.
Further, the top of described only post bridge pier is provided with steel top board, and described steel top board connects into an integral body by steel hoop and steel corbel web.
Further, the top of described steel top board is provided with bearing.
Further, described bearing is two.
Further, between described bearing and steel top board, be provided with bearing pad stone, the bearing pad stone that described bearing pad stone is steel, described bearing pad stone is welded on steel top board.
The utility model provides a kind of overturning or slip resistance analysis bracing means of only stub bridge, at space under bridge in limited or not permission of condition situation, by to the only wide steel bent cap of setting up of stub in the middle of continuous box girder, on steel bent cap, change and establish double support, by the setting of double support, straight bridge has been reduced to unbalance loading impact, for curved, skew bridge, can effectively improve twisting moment, improve bridging apparatus stressed, reduced potential safety hazard.
Accompanying drawing explanation
Fig. 1 is the overturning or slip resistance analysis bracing means elevational schematic view of the only stub bridge of the utility model;
Fig. 2 is the overturning or slip resistance analysis bracing means floor map of the only stub bridge of the utility model.
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.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, so that those skilled in the art can better understand the utility model being implemented, but illustrated embodiment is not as to restriction of the present utility model.
The utility model provides a kind of overturning or slip resistance analysis bracing means of only stub bridge of steel concrete, as depicted in figs. 1 and 2, in the upper end of described only post bridge pier 1, is provided with widening structure, on 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 form an integral body by fastening bolt 5 and welding, its circumferencial direction of the 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, solely 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 and chemically-planted steel bar 3 weld and be fixed on the external surface of only post bridge pier 1.
Described steel hoop 2 is two semicircle steel hoops, and first two described semicircle steel hoops link together by fastening bolt, then the butt seam of two semicircle steel hoops welds.Steel hoop 2 is connected into an integral body by two semicircles to welding, to be conducive to the only stub cooperative bearing of steel bent cap and concrete.
On the circumferencial direction of described steel hoop 2, be provided with web 4, described web 4 is steel corbel web, described steel corbel web uniform welding is on steel hoop 2, so just make each piece steel corbel web all remove stressed and stressed equal and opposite in direction, the broadening structure stress that has guaranteed whole only post bridge pier 1 is even, the periphery of described web 2 is sealed by end-blocking plate 7, to increase overall structure tightness.
The complete steel bent cap of constructing is a locking device, has guaranteed the tightness of device, favourable anticorrosion.
The top of described only post bridge pier 1 is provided with steel top board 6, and described steel top board 6 connects into an integral body by steel hoop 2 and steel corbel web.The top of described steel top board 6 is provided with bearing 8, and described bearing 8 is two.So just the single support device of only post bridge pier 1 has been become to double support device, reduced the unbalance loading impact of straight bridge, reduced potential safety hazard.
Between described bearing 8 and steel top board 6, be provided with bearing pad stone, the bearing pad stone that described bearing pad stone is steel, described bearing pad stone is welded on steel top board 6.
Specific embodiment of the utility model, on existing only post bridge pier 1, set up two semicircle steel hoops 2, two steel hoops form an integral body by fastening bolt 5 and subtend 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, on the capital of only post bridge pier, steel top board 6 is set, by steel top board 6, both sides steel hoop 2 and the connection of steel corbel web is as a whole, steel corbel web seals by end-blocking plate 7 again.Two bearings 8 are set on steel top board, between described bearing 8 and steel top board 6, are provided with bearing pad stone, the bearing pad stone that described bearing pad stone is steel, described bearing pad stone is welded on steel top board 6.
By to only post bridge pier, broadening adds steel bent cap, on steel bent cap, by single support, changed and established double support, by arranging of double support, on straight bridge, can reduce unbalance loading affects, and for curved, skew bridge, has effectively improved twisting moment, improve bridging apparatus stressed, reduced potential safety hazard.
The above embodiment is only the preferred embodiment for absolutely proving that the utility model is lifted, and protection domain of the present utility model is not limited to this.Being equal to that those skilled in the art do on the utility model basis substitutes or conversion, all within protection domain of the present utility model.Protection domain of the present utility model is as the criterion with claims.
Claims (10)
1. an overturning or slip resistance analysis bracing means for only stub bridge, includes only post bridge pier, it is characterized in that, in the upper end of described only post bridge pier, widening structure is set, and on the top of described widening structure, is provided with bearing.
2. the overturning or slip resistance analysis bracing means of only stub bridge according to claim 1, it is characterized in that, the upper end of described only post bridge pier is provided with steel hoop, and its circumferencial direction of the upper end edge of described only post bridge pier is provided with bar planting, and described steel hoop is anchored at the upper end of only post bridge pier by bar planting.
3. the overturning or slip resistance analysis bracing means of only stub bridge according to claim 2, is characterized in that, described steel hoop is two semicircle steel hoops, and two described semicircle steel hoops form an integral body by fastening bolt and welding.
4. the overturning or slip resistance analysis bracing means of only stub bridge according to claim 3, is characterized in that, on the circumferencial direction of described steel hoop, is provided with web.
5. the overturning or slip resistance analysis bracing means of only stub bridge according to claim 4, is characterized in that, described web is steel corbel web, and described steel corbel web is welded on steel hoop.
6. the overturning or slip resistance analysis bracing means of only stub bridge according to claim 5, is characterized in that, the periphery of described web is sealed by end-blocking plate.
7. the overturning or slip resistance analysis bracing means of only stub bridge according to claim 6, is characterized in that, the top of described only post bridge pier is provided with steel top board, and described steel top board connects into an integral body by steel hoop and steel corbel web.
8. the overturning or slip resistance analysis bracing means of only stub bridge according to claim 7, is characterized in that, the top of described steel top board is provided with bearing.
9. the overturning or slip resistance analysis bracing means of only stub bridge according to claim 8, is characterized in that, described bearing is two.
10. the overturning or slip resistance analysis bracing means of only stub bridge according to claim 9, is characterized in that, between described bearing and steel top board, is provided with bearing pad stone, the bearing pad stone that described bearing pad stone is steel, and described bearing pad stone is welded on steel top board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320508520.4U CN203403373U (en) | 2013-08-20 | 2013-08-20 | Antidumping reinforcing device of single-column pier bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320508520.4U CN203403373U (en) | 2013-08-20 | 2013-08-20 | Antidumping reinforcing device of single-column pier bridge |
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| Publication Number | Publication Date |
|---|---|
| CN203403373U true CN203403373U (en) | 2014-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320508520.4U Expired - Lifetime CN203403373U (en) | 2013-08-20 | 2013-08-20 | Antidumping reinforcing device of single-column pier bridge |
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| CN (1) | CN203403373U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452053A (en) * | 2013-08-20 | 2013-12-18 | 中铁第四勘察设计院集团有限公司 | Anti-overturning reinforcing device of single-column-pier bridge |
| CN105672145A (en) * | 2016-03-18 | 2016-06-15 | 大连理工大学 | Structure for broadening bridge by additionally arranging steel cap beam on top of pier |
| CN106012874A (en) * | 2016-07-25 | 2016-10-12 | 东南大学 | Anti-overturning reinforcing and supporting device of single-column pier girder bridge |
| CN106049290A (en) * | 2016-07-21 | 2016-10-26 | 中铁第勘察设计院集团有限公司 | Widening processing structure of prefabricated channel steel of prefabricated erected simply-supported beam between tunnels and construction method thereof |
| CN109024311A (en) * | 2018-07-16 | 2018-12-18 | 张继莹 | A kind of bridge strengthening device |
-
2013
- 2013-08-20 CN CN201320508520.4U patent/CN203403373U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452053A (en) * | 2013-08-20 | 2013-12-18 | 中铁第四勘察设计院集团有限公司 | Anti-overturning reinforcing device of single-column-pier bridge |
| CN103452053B (en) * | 2013-08-20 | 2016-06-08 | 中铁第四勘察设计院集团有限公司 | The antidumping bracing means of Single column pier bridge |
| CN105672145A (en) * | 2016-03-18 | 2016-06-15 | 大连理工大学 | Structure for broadening bridge by additionally arranging steel cap beam on top of pier |
| CN105672145B (en) * | 2016-03-18 | 2017-10-13 | 大连理工大学 | A kind of pier top sets up the structure that steel lid beam widens bridge |
| CN106049290A (en) * | 2016-07-21 | 2016-10-26 | 中铁第勘察设计院集团有限公司 | Widening processing structure of prefabricated channel steel of prefabricated erected simply-supported beam between tunnels and construction method thereof |
| CN106012874A (en) * | 2016-07-25 | 2016-10-12 | 东南大学 | Anti-overturning reinforcing and supporting device of single-column pier girder bridge |
| CN106012874B (en) * | 2016-07-25 | 2017-08-25 | 东南大学 | A kind of Single column pier beam bridge antidumping reinforced support device |
| CN109024311A (en) * | 2018-07-16 | 2018-12-18 | 张继莹 | A kind of bridge strengthening device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140122 |
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| CX01 | Expiry of patent term |