CN201627138U - Bridge abutment protecting structure - Google Patents
Bridge abutment protecting structure Download PDFInfo
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- CN201627138U CN201627138U CN2010201535951U CN201020153595U CN201627138U CN 201627138 U CN201627138 U CN 201627138U CN 2010201535951 U CN2010201535951 U CN 2010201535951U CN 201020153595 U CN201020153595 U CN 201020153595U CN 201627138 U CN201627138 U CN 201627138U
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Abstract
The utility model discloses a bridge abutment protecting structure, which is characterized by comprising a plurality of rows of protecting piles arranged on one side of a bridge abutment beside water. The upper ends of the protecting piles surpass a designed flood level. Preferably, four rows of the protecting piles are respectively and slantingly arranged towards an upstream side river bank and a downstream side river bank on the side of the bridge abutment close to river; the distance from the four rows of upstream protecting piles to the bridge abutment is larger that that from the four rows of downstream protecting piles to the bridge abutment; and filling sand bags are arranged at the middle positions of the upstream side protecting piles and the downstream side protecting piles and at the position between each protecting pile and the bridge abutment. Compared with the prior art, the bridge abutment protecting structure has better protecting effect, and is particularly suitable for being applied to wide and shallow wandering river reaches.
Description
Technical field
The utility model relates to a kind of bridge guard technology field, especially a kind of abutment protection structure.
Background technology
Abutment refers to the supporting superstructure that is positioned at the bridge two ends and is connected with roadbed and bears the banket structure of lateral pressure of end of the bridge.Wash away the abutment of more serious section bridge at river, generally must build preventive works and protect, common preventive works generally have following four classes:
1. its effect of diversion structure is smooth-going and change the direction of a stream of water slowly, and current are imported bridge opening, prevents current lateral erosion scour, outflanks the bridge way of escape.The diversion structure angle of cut common and current is less, and little and gentle to the current compression, so be commonly referred to as vertical preventive works, the building that belongs to this class has trraning pole, longitudinal dike, embankment (river levee) and cut-off dam etc.Adopt longitudinal dike to carry out dredging waterway, can make current steadily unimpeded, many rivers all adopt this pattern, and its effect is more satisfactory.Put below the scour depth but require whole longitudinal dike basis all must build, cost height, engineering quantity are greatly conspicuous, and certain geological conditions requirement is arranged.
2. choose stream building choose stream building change the direction of a stream of water tempestuously on demand, current are partly or entirely chosen from the riverbank of being washed away, structure influence to current is bigger, and the form of structure of choosing the stream building is a transverse barrier, so be commonly referred to as horizontal preventive works.The building that belongs to this class has groynes, permeable spur (campshed permeable dike, Ma Cha) and forestation against flood etc.Usually the effect of permeable spur still clearly.
3. admittedly for building to prevent the bed scour incision at the bottom of the basic skill or training Cheng Gu, the building that make the riverbed remain on certain elevation, to belong to this class has ground sills (groynes that end face is lower than the riverbed face or flushes with the riverbed face), check dam and chooses bank etc.Its effect system cooperates protection foundation scourings such as shallow foundation pier, trraning pole.
4. the slope reinforcement building is used to protect trraning pole, bridge approach embankment and bridge site upstream and downstream riverbank, need carries out the part of protective reinforcing because of being subjected to current scour, floating ice and floating thing bump and stormy waves invasion and attack etc.The building that belongs to this class grouts or dry-laid rubble, iron wire gabion and jackstone, bank protection and barricade etc.
Above-mentioned existing safeguard structure is not only to design at abutment, but can be widely used in various riparian protections, possesses certain protection effect, but is not particularly suitable for the protection of abutment.Particularly in some wide shallow riverbeds, type section of going around, the riverbank mostly is thin sand and soil, the again plumes that become to concentrate of current more, the swing of plume direction is indefinite, sometimes be the bigger angle of cut or even crossing current with the bank slope protection engineering, the plume scour is just even more serious, and scour depth is very dark, causes comparatively difficulty of abutment protection.Effect is relatively poor when adopting above-mentioned preventive means that abutment is protected in this wide shallow type section of going around, and causes bridge to collapse easily.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of protection effect good abutment protection structure in order to overcome above-mentioned the deficiencies in the prior art.
In order to solve the problems of the technologies described above, adopted following technical scheme in the utility model:
A kind of abutment protection structure, its characteristics are, comprise being arranged at the abutment number row protection stake of a side near water, and described protection stake upper end surpasses design flood level.
The applicant has studied safeguard structure of the prior art, and it mainly is divided into two kinds, and a kind of is to build fixed obstacle, thereby current are led out the impact of avoiding abutment by force; A kind of is to take the reinforcing means, with abutment below bed stabilization, it can be resisted wash away.In the dual mode, safeguard structure all is the impacts that are arranged at riverbed surface and resist current by force, so after the river washes away for a long time, the riverbed earth of safeguard structure below can be washed away, safeguard structure is loosening to be fallen thereby cause, and then causes bridge to collapse.This defective is particularly evident in some wide shallow type sections of going around of Xinjiang of China upstream.So adopting in the technical solution of the present invention to be provided with protects stake that abutment is protected; the protection stake does not stop by force to current; but the effect of playing buffer deceleration consumes the impact force of water flow degree; significantly slow down through the water velocity of overprotection stake and promptly no longer to have destructiveness; it is following to guarantee himself stability that the riverbed face can be goed deep in the lower end of protection stake simultaneously; this on the principle altered protected mode, be particularly suitable in the wide shallow type section of going around, practicing.
As optimization; abutment by river one side respectively upstream side riverbank and riverbank, downstream each obliquely be provided with four row protection stakes; upstream four row's protection stake and abutment distance are greater than downstream four row's protection stakes and abutment distances, and the position is provided with filled sandbags between upstream side protection stake and protection stake centre position, downstream and protection stake and abutment.Described four row's protection stakes are meant generally and can be set to four rows, also can increase and decrease according to the river actual conditions certainly when specifically implementing; Clear distance is no more than 3 times of stakes footpath between every campshed, between the same campshed laterally clear distance also should not stake above 3 times directly; The cross section type of stake is advisable with side's stake; In addition; in this structure; upstream four row's protection stakes and abutment distance are greater than downstream four row's protection stake and abutment distances; the position is provided with filled sandbags between upstream side protection stake and protection stake centre position, downstream and protection stake and abutment, is for its bridge that is adapted at having built up below is implemented.Because bridge floor is not high apart from the riverbed face; therefore remove the following protection stake of bridge floor; for avoiding causing the abominable fluidised form in bridge floor position washing away to abutment owing to the not closure of protection pilework; adopt asymmetric pilework form; and adopt protection stake back and bridge floor to fill sandbag with upper/lower positions; guarantee that the abutment forward position do not have flowing water and pass through, thereby avoided the erosion damage of oblique flow abutment.Whole protection form of structure is reasonable in design, and protection effect is obvious, has reached to prevent that oblique flow from directly washing away the abutment purpose, has avoided the generation of bridge disaster by flood phenomenon, and it is good to have a protection effect, the advantage of construction simple and convenient.
In sum, than prior art, this abutment protection structural shielding effect is more excellent, is particularly suitable for practicing in the wide shallow type section of going around.
Description of drawings
Fig. 1 is the utility model main body structure schematic diagram, and figure is for overlooking direction.
1 is abutment among the figure, and 2 are the protection stake, and 3 is sandbag, and 4 is the riverbank.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
During concrete enforcement, as shown in Figure 1, a kind of abutment protection structure comprises being arranged at the abutment 1 number row protection stake 2 of a side near water that described protection stake 2 lower ends are rooted in the bottom, riverbed, and protection stake upper end surpasses design water level.
More particularly; during enforcement can abutment by river one side respectively upstream side riverbank and riverbank, downstream each obliquely be provided with four row protection stakes 2; upstream four row's protection stake and abutment distance are greater than downstream four row's protection stakes and abutment distances, and the position is provided with filled sandbags 3 between upstream side protection stake and protection stake centre position, downstream and protection stake and abutment.Label 4 is the riverbank among Fig. 1.
In the time of concrete enforcement, described protection stake pilespacing and array pitch even row's number etc. all can be adjusted according to actual conditions, makes it play maximum buffering flow action; When if the abutment position exists bigger oblique flow to impact simultaneously, can set up number row long distance protection stake slightly at a distance along the oblique flow direction, the impact dynamics that guides and slow down oblique flow one step ahead plays the better protection effect.
Claims (2)
1. an abutment protection structure is characterized in that, comprises being arranged at the abutment number row protection stake of a side near water, and described protection stake upper end surpasses design flood level.
2. abutment protection structure as claimed in claim 1; it is characterized in that; abutment by river one side respectively upstream side riverbank and riverbank, downstream each obliquely be provided with four row protection stakes; upstream four row's protection stake and abutment distance are greater than downstream four row's protection stakes and abutment distances, and the position is provided with filled sandbags between upstream side protection stake and protection stake centre position, downstream and protection stake and abutment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201535951U CN201627138U (en) | 2010-04-08 | 2010-04-08 | Bridge abutment protecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201535951U CN201627138U (en) | 2010-04-08 | 2010-04-08 | Bridge abutment protecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201627138U true CN201627138U (en) | 2010-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201535951U Expired - Fee Related CN201627138U (en) | 2010-04-08 | 2010-04-08 | Bridge abutment protecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201627138U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864754A (en) * | 2012-09-10 | 2013-01-09 | 重庆交通大学 | Measuring and controlling method of scouring depth of training wall of river reach of bridge site |
-
2010
- 2010-04-08 CN CN2010201535951U patent/CN201627138U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864754A (en) * | 2012-09-10 | 2013-01-09 | 重庆交通大学 | Measuring and controlling method of scouring depth of training wall of river reach of bridge site |
| CN102864754B (en) * | 2012-09-10 | 2016-01-20 | 重庆交通大学 | The investigating method of a kind of bridge location section trraning pole scour depth |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101110 Termination date: 20120408 |