CN201722598U - Bridge pier mud-rock-flow-impact-resistance structure of railroad bridge - Google Patents
Bridge pier mud-rock-flow-impact-resistance structure of railroad bridge Download PDFInfo
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- CN201722598U CN201722598U CN2010202244224U CN201020224422U CN201722598U CN 201722598 U CN201722598 U CN 201722598U CN 2010202244224 U CN2010202244224 U CN 2010202244224U CN 201020224422 U CN201020224422 U CN 201020224422U CN 201722598 U CN201722598 U CN 201722598U
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- bridge pier
- rock flow
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Abstract
The utility model relates to a bridge pier mud-rock-flow-impact-resistance structure of a railroad bridge, which aims at providing the bridge pier mud-rock-flow-impact-resistance structure of the railroad bridge capable of effectively improving the capability of the bridge pier for resisting the impact damage of the mud-rock flow. The bridge pier comprises a pier body (10) and a base (20) and is characterized in that the lower section of the pier body (10) is provided with a conical flow guide body (30) fixed and combined into one body with the pier body (10) and the base (20) in the direction facing the mud-rock flow, and the front part of the conical flow guide body (30) consists of a circular arc-shaped front end surface (33) and two front side surfaces (31) and (32) inclined towards the center line correspondingly to a transverse bridge of the bridge pier.
Description
Technical field
The utility model relates to bridge pier, and the anti-mud-rock flow of particularly a kind of railroad bridge bridge pier impacts structure.
Background technology
Mud-rock flow is the mountain torrents that contain a large amount of solid matters.It is that a kind of natural calamity of mountain area, upper level is seen and resembled, and is a kind of solid matters such as a large amount of silts, stone that contain, break out, last of short duration, break with tremendous force, have the special mighty torrent of powerful destructive power.China is the country on mountain more than, and the mountain area accounts for 2/3rds of area, is mud-rock flow phenomenon one of country more widely in the world, and mud-rock flow mainly is distributed in China southwest, northwest, a lot of mountain areas, North China, and also there are fragmentary distribution in northeast, province such as Central-South.
In Railway Location Design,, usually can run into and near the close accumulation area in the bottom, Circulation Area of debris flow gully or at the mud-rock flow accumulation area, the situation that bridge passes through to be set owing to the control of front and back railway engineering or in order to satisfy the reasonability of whole circuit scheme.Because these location landform are relatively open, bridge is difficult to leap, needs to be provided with in debris flow gully bridge pier.Because mud-rock flow is a kind of special mighty torrent that contains solid matters such as a large amount of silts, stone, though flow near the accumulation area or accumulation area one band, its flow velocity is a lot of less than the Circulation Area, but the solid matter of the greater particle size of its parcel still has certain destruction to bridge pier structure.
At present, the bridge pier mud-rock flow impact failure that prevents that railroad bridge adopted has following several technical measures:
One, when railway route selection, passes round the zone that influenced by mud-rock flow as far as possible, make railway away from debris flow gully.These technical measures will certainly cause the deterioration of whole line condition, increase line length, strengthen construction investment, and engineering measure is extremely unreasonable or implement the great situation of difficulty sometimes even before and after occurring.
Two, adopt Longspan Bridge one leap debris flow gully, bridge pier is not set in ditch.These technical measures not only can make construction investment increase considerably, sometimes also can be broad because of the groove of next-door neighbour bottom, Circulation Area or accumulation area, be subjected to restrictions such as absolute altitude, landform, and a leap scheme is false or implements cost and increases severely.
Three, debris flow gully is carried out the comprehensive regulation, to mud-rock flow take to block, arrange lead, various engineering measure such as protection renovates.Because the training works of comprehensive regulation mud-rock flow relatively disperses, the comprehensive function of each prevention and cure project performance is difficult to accurate assessment, the prevention and cure project that disperses is difficult to accomplish timely maintenance, and its exclusive feature of different debris flow gully tool, therefore, though carried out the comprehensive regulation, but when mud-rock flow took place, the safety of bridge often still was subjected to serious threat, simultaneously, because the dispersion setting of prevention and cure project has also increased the maintenance difficulties of runing maintenance department greatly.
The utility model content
Technical problem to be solved in the utility model provides the anti-mud-rock flow of a kind of railroad bridge bridge pier and impacts structure, can improve the impact failure ability of bridge pier opposing mud-rock flow effectively.
The technical scheme that its technical problem that solves the utility model adopts is as follows:
The anti-mud-rock flow of railroad bridge bridge pier of the present utility model impacts structure, bridge pier comprises pier shaft and basis, it is characterized in that: the mud-rock flow direction is provided with pier shaft, the basis is fixed be the taper baffle of one to the hypomere of described pier shaft meeting, and the front portion of this taper baffle is made of two leading flanks and the circular arc front end face with respect to the inclination of bridge pier direction across bridge center line.
The beneficial effects of the utility model are that the flow section that makes bridge pier structure occupy the river course farthest reduces, and not only saves construction investment, also helps the smooth drainage of mud-rock flow, reduces the impact force that the mud-rock flow solid matter produces structure greatly; Baffle and bridge pier main body structurally unite two into one, and under the situation that does not change epimere pier shaft structure substantially, bridge pier also can satisfy the requirement that the opposing mud-rock flow impacts and railway is normally runed, and have improved the security performance of crossing over the debris flow gully bridge greatly; Simple for structure, be convenient to the management of design and construction and routine servicing.
Description of drawings
This manual comprises following four width of cloth accompanying drawings:
Fig. 1 is that the anti-mud-rock flow of the utility model railroad bridge bridge pier impacts the direction across bridge facade structures schematic diagram of constructed embodiment 1;
Fig. 2 is the sectional drawing along A-A line among Fig. 1;
Fig. 3 is that the anti-mud-rock flow of the utility model railroad bridge bridge pier impacts the direction across bridge facade structures schematic diagram of constructed embodiment 2;
Fig. 4 is the sectional drawing along B-B line among Fig. 3.
Member shown in the figure, position and pairing mark: pier shaft 10, basis 20, taper baffle 30, leading flank 31, leading flank 32, circular arc end face 33.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
See figures.1.and.2, the anti-mud-rock flow of the utility model railroad bridge bridge pier impacts structure, and bridge pier comprises pier shaft 10 and basis 20.The hypomere of described pier shaft 10 is provided with pier shaft 10, basis 20 are fixed and be the taper baffle 30 of one meeting the mud-rock flow direction, and the front portion of this taper baffle 30 is made of two leading flanks 31,32 and the circular arc front end face 33 with respect to the inclination of bridge pier direction across bridge center line.The flow section that taper baffle 30 makes bridge pier structure occupy the river course reduces, and not only saves construction investment, also helps the smooth drainage of mud-rock flow, reduces the impact force that the mud-rock flow solid matter produces structure greatly.Taper baffle 30 structurally unites two into one with the bridge pier main body, under the situation that does not change pier shaft 10 epimeres structure substantially, bridge pier also can satisfy the requirement that the opposing mud-rock flow impacts and railway is normally runed, and has improved the security performance of crossing over the debris flow gully bridge greatly.
With reference to Fig. 3 and Fig. 4, big or mudflow speed is bigger for solid matter particle diameter in the mud-rock flow, under the situation that the impact force that mud-rock flow produced is big or pier shaft 10 scale of constructions are little, the hypomere of the rear portion parcel pier shaft 10 of described taper baffle 30.
With reference to Fig. 1 and Fig. 3, the end face of described this taper baffle 30 should exceed design mud position absolute altitude usually.With reference to Fig. 3 and Fig. 4, described two leading flanks 31,32 are not less than 4: 1 usually with respect to the admedian slope of bridge pier cross-bridges.For further improving pier shaft 10 hypomere anti-impact output capacities, described taper baffle 30 can be buried the mask reinforcing bar underground in the inboard of two leading flanks 31,32 and circular arc front end face 33.According to the geological condition of bridge, described basic 20 can adopt open cut foundation, Embed based or pile foundation.
It is to be noted, above the anti-mud-rock flow of described the utility model railroad bridge bridge pier that just explains through diagrams some principles of impacting structure because the those of ordinary skill in constructed field is easy to carry out on this basis some modifications and change.Therefore, this manual be not be the utility model to be confined to shown in and in described concrete structure and the scope of application, so every the corresponding modify and equivalent that might be utilized all belongs to the claim that the utility model is applied for.
Claims (5)
1. the anti-mud-rock flow of railroad bridge bridge pier impacts structure, bridge pier comprises pier shaft (10) and basis (20), it is characterized in that: the mud-rock flow direction is provided with pier shaft (10), basis (20) is fixed be the taper baffle (30) of one to the hypomere of described pier shaft (10) meeting, and the front portion of this taper baffle (30) is by two leading flanks (31,32) that tilt with respect to bridge pier direction across bridge center line and circular arc front end face (33) formation.
2. the anti-mud-rock flow of railroad bridge bridge pier as claimed in claim 1 impacts structure, it is characterized in that: the hypomere of the rear portion parcel pier shaft (10) of described taper baffle (30).
3. the anti-mud-rock flow of railroad bridge bridge pier as claimed in claim 1 impacts structure, it is characterized in that: described two leading flanks (31,32) with respect to the admedian slope of bridge pier cross-bridges for being not less than 4: 1.
4. the anti-mud-rock flow of railroad bridge bridge pier as claimed in claim 1 impacts structure, and it is characterized in that: described taper baffle (30) is embedded with the mask reinforcing bar in the inboard of two leading flanks (31,32) and circular arc front end face (33).
5. impact structure as claim 1,2, the anti-mud-rock flow of 3 or 4 described railroad bridge bridge piers, it is characterized in that: the end face of described this taper baffle (30) exceeds design mud position absolute altitude.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202244224U CN201722598U (en) | 2010-06-11 | 2010-06-11 | Bridge pier mud-rock-flow-impact-resistance structure of railroad bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202244224U CN201722598U (en) | 2010-06-11 | 2010-06-11 | Bridge pier mud-rock-flow-impact-resistance structure of railroad bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201722598U true CN201722598U (en) | 2011-01-26 |
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ID=43490913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202244224U Expired - Lifetime CN201722598U (en) | 2010-06-11 | 2010-06-11 | Bridge pier mud-rock-flow-impact-resistance structure of railroad bridge |
Country Status (1)
| Country | Link |
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| CN (1) | CN201722598U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631307A (en) * | 2013-11-07 | 2015-05-20 | 成都凯裕电子电器有限公司 | Impact-prevention drainage device of pier |
| CN107766613A (en) * | 2017-09-09 | 2018-03-06 | 中铁二院工程集团有限责任公司 | The anti-mud-rock flow boulder impact design method of bridge pier |
| CN108009363A (en) * | 2017-12-04 | 2018-05-08 | 中铁二院工程集团有限责任公司 | A kind of mud-rock flow washes away the computational methods of bridge pier |
-
2010
- 2010-06-11 CN CN2010202244224U patent/CN201722598U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631307A (en) * | 2013-11-07 | 2015-05-20 | 成都凯裕电子电器有限公司 | Impact-prevention drainage device of pier |
| CN107766613A (en) * | 2017-09-09 | 2018-03-06 | 中铁二院工程集团有限责任公司 | The anti-mud-rock flow boulder impact design method of bridge pier |
| CN108009363A (en) * | 2017-12-04 | 2018-05-08 | 中铁二院工程集团有限责任公司 | A kind of mud-rock flow washes away the computational methods of bridge pier |
| CN108009363B (en) * | 2017-12-04 | 2021-02-02 | 中铁二院工程集团有限责任公司 | Calculation method for scouring bridge piers by debris flow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110126 |
|
| CX01 | Expiry of patent term |