CN206467512U - Foundation in deep soft sediment section road and bridge connected structure - Google Patents
Foundation in deep soft sediment section road and bridge connected structure Download PDFInfo
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- CN206467512U CN206467512U CN201720142619.5U CN201720142619U CN206467512U CN 206467512 U CN206467512 U CN 206467512U CN 201720142619 U CN201720142619 U CN 201720142619U CN 206467512 U CN206467512 U CN 206467512U
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Abstract
The utility model discloses a kind of foundation in deep soft sediment section road and bridge connected structure, the scope of road and bridge connected structure postpones to the twice hazard to bridge's pier length of road from bridge abutment structure, including the powder-spray pile roadbed section for the encryption arrangement being arranged at after bridge abutment structure in foundation in deep soft sediment, the stake spacing minimum value arrangement as defined in specification is provided between multiple powder-spray piles, adjacent powder-spray pile in the powder-spray pile roadbed section of encryption arrangement；The powder-spray pile roadbed section for encrypting arrangement is arised from place of bridge abutment structure is doubled in Powder-jet Pile electrical path length, is terminated in place of the twice hazard to bridge's pier length of bridge abutment structure；Graded broken stone layer is equipped with the top of the powder-spray pile for encrypting arrangement.The utility model enhances the intensity and globality of road and bridge joining place roadbed, reduce the differential settlement between bridge and road foundation, so as to effectively eliminate the vehicle bump at bridge ends of foundation in deep soft sediment section road and bridge joining place, the normal working performance of traffic safety and bridge structure has been ensured, bridge service life is extended.
Description
Technical field
The utility model is related to road and bridge construction technical field, more particularly to a kind of foundation in deep soft sediment section road and bridge connected structure.
Background technology
Position that bridge is connected with road causes its joining place to occur wrong often due to the sedimentation of bridge and roadbed is inconsistent
Platform, so that vehicle travels the phenomenon that generation is jolted, jumped during at this, referred to as bumping at bridge-head.Vehicle bump at bridge ends not only shadow
The security and comfortableness driven has been rung, the service life of vehicle has been reduced, and larger rush is produced during due to bumping at bridge-head
Load is hit, frequent destruction is caused to bridge and road joining place structure, and then have influence on the normal working performance of bridge structure.Often
On rule, by handling roadbed after platform, the appearance that hazard to bridge's pier avoids vehicle bump at bridge ends is then set up on roadbed.
Roadbed Treatment has following several after conventional platform：
Cushion：First excavate present situation soft foundation, change to fill out and carry out structure construction after graded broken stone or dirt again.The method is often
Suitable for shallower roadbed treatment.
Preloading：First banketed, using piling prepressing or by the use of heavy vehicle as prefabricating load, treated in this place
Ground reached after some strength, then cut out and banketed, and carries out structure construction.The method is long in time limit, to soft layer compared with Hou Ruanji roads
Less, surplus value of subsidence is big by Duan Xiaoguo.
Heavy-tamping method：Very heavy hammer ram is lifted to certain altitude using crane gear, its free-falling is allowed, its generation is utilized
Larger impact energy to soil layer carry out strong compaction, with improve soil layer intensity, reduction compressibility.This method is to surrounding building shadow
Ring big, easily cause destruction.
But, when roadbed after platform geology for depth up to ten meters of even muck soils of tens meters of depths when, it is conventional more than
Processing method, it is difficult to reach design requirement.
When the roadbed of road is the deeper muddy soft soil of depth, Soft Ground is generally carried out using powder-spray pile.
Powder-spray pile be by the use of materials such as cement, lime as curing agent, it is on the spot that weak soil and curing agent is strong by special Mixing Machine
System stirring, using a series of physical produced between curing agent and weak soil, chemical reaction, makes the integral property of weak soil scleroma, water
Stability and the higher high-quality ground of intensity.
But when being constructed according to prior art, powder-spray pile is only implemented to attachment strap terminal position, and this results in road and bridge joining place
Subgrade settlement rate is still inconsistent, and bumping at bridge-head situation is transferred to attachment strap distal portion.
Utility model content
In view of the drawbacks described above of prior art, technical purpose of the present utility model is to provide a kind of foundation in deep soft sediment section
Road and bridge connected structure, improvement is existing can not completely the same caused end of the bridge jump in foundation in deep soft sediment section road and bridge joining place sedimentation rate
The defects such as car.
To achieve the above object, the utility model provides a kind of foundation in deep soft sediment section road and bridge connected structure, the road and bridge
The scope of connected structure postpones to the twice hazard to bridge's pier length of road from bridge abutment structure, including is arranged at after bridge abutment structure
Provided with the spray of multiple powder in the powder-spray pile roadbed section of encryption arrangement in foundation in deep soft sediment, the powder-spray pile roadbed section of the encryption arrangement
Stake spacing minimum value is arranged as defined in specification between stake, the adjacent powder-spray pile；The powder-spray pile roadbed of the encryption arrangement
Section is arised to be doubled in place of the Powder-jet Pile electrical path length apart from the bridge abutment structure, is terminated in twice apart from the bridge abutment structure
In place of the hazard to bridge's pier length；Graded broken stone layer is equipped with the top of the powder-spray pile of the encryption arrangement.
Further, the quantity of the graded broken stone layer is to be equipped with one layer between multilayer, every layer of graded broken stone layer
Steel moulds grid, and the length of the steel modeling grid is more than the length of the powder-spray pile roadbed section of the encryption arrangement.In graded broken stone layer
Top laying steel modeling grid
Further, the thickness of the graded broken stone layer is 50cm.
The beneficial effects of the utility model：
The utility model has the advantages that as a result of said structure design：The utility model is apart from bridge
Powder-spray pile encryption arrangement processing is proceeded by twice of hazard to bridge's pier length of platform structure until apart from one times of powder-spray pile of bridge abutment structure
In place of stake electrical path length, the intensity and globality of road and bridge joining place roadbed are enhanced, it is heavy between bridge and road foundation to reduce
Drop is poor, so as to effectively eliminate the vehicle bump at bridge ends of foundation in deep soft sediment section road and bridge joining place, has ensured traffic safety and bridge
The normal working performance of structure, extends bridge service life.
The technique effect of design of the present utility model, concrete structure and generation is made furtherly below with reference to accompanying drawing
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
Brief description of the drawings
Fig. 1 is the structural representation of a preferred embodiment of the present utility model.
In figure, 1 foundation in deep soft sediment section road and bridge connected structure；The powder-spray pile roadbed section of 2 encryption arrangements；21 powder-spray piles；3 grades are matched somebody with somebody
Metalling；4 steel mould grid；5 bridge abutment structures；The 6 powder-spray pile roadbed sections normally arranged；7 hazard to bridge's pier.
Embodiment
As shown in figure 1, a specific embodiment of the present utility model, a kind of foundation in deep soft sediment section road and bridge connected structure 1, including
The powder-spray pile roadbed section 2 for the encryption arrangement being arranged at after bridge abutment structure 5 in foundation in deep soft sediment, encrypts the powder-spray pile roadbed section of arrangement
It is provided between multiple powder-spray piles 21, adjacent powder-spray pile 21 and is arranged according to stake spacing minimum value as defined in specification in 2；Encryption arrangement
Powder-spray pile roadbed section 2 arise from place of bridge abutment structure is doubled in Powder-jet Pile electrical path length S2, terminate in apart from 5 liang of bridge abutment structure
In place of times length S1 of hazard to bridge's pier 7；The top of powder-spray pile roadbed section 2 for encrypting arrangement is equipped with graded broken stone layer 3；Graded broken stone
The quantity of layer 3 is multilayer, and per level, the thickness with metalling 3 is 50cm, in order to strengthen the roadbed globality of road and bridge joining section, often
Level is equipped with one layer of steel modeling grid 4 between matching somebody with somebody metalling 3, and the length of steel modeling grid 4 is more than the powder-spray pile roadbed of encryption arrangement
The length of section 2.Correspondingly, it is then normal that foundation in deep soft sediment section road and bridge connected structure 1, which is closed under the deep mud roadbed of road direction,
The powder-spray pile roadbed section 6 of arrangement.
The number of plies of graded broken stone layer determines that difference in height is bigger by the difference in height on powder-spray pile top to the road surface of encryption arrangement, level
The number of plies with metalling is more, on the contrary then the number of plies is fewer.
The utility model enhances the intensity and globality of road and bridge joining place roadbed, reduces between bridge and road foundation
Differential settlement so that effectively eliminate foundation in deep soft sediment section road and bridge joining place vehicle bump at bridge ends, ensured traffic safety and
The normal working performance of bridge structure, extends bridge service life.
Preferred embodiment of the present utility model described in detail above.It should be appreciated that the ordinary skill people of this area
Member just can make many modifications and variations without creative work according to design of the present utility model.Therefore, all this technology necks
Technical staff passes through logic analysis, reasoning or limited reality on the basis of existing technology according to design of the present utility model in domain
Available technical scheme is tested, all should be in the protection domain being defined in the patent claims.
Claims (3)
1. a kind of foundation in deep soft sediment section road and bridge connected structure, it is characterised in that the scope of the road and bridge connected structure is from abutment knot
Structure is postponed to the twice hazard to bridge's pier length of road, including the encryption arrangement being arranged at after bridge abutment structure in foundation in deep soft sediment
Powder-spray pile roadbed section, be provided with multiple powder-spray piles in the powder-spray pile roadbed section of the encryption arrangement, the adjacent powder-spray pile it
Between as defined in specification stake spacing minimum value arrange；The powder-spray pile roadbed section of the encryption arrangement is arised from apart from the bridge abutment structure
It is doubled in place of the Powder-jet Pile electrical path length, terminates in place of the twice hazard to bridge's pier length of the bridge abutment structure；
Graded broken stone layer is equipped with the top of the powder-spray pile of the encryption arrangement.
2. foundation in deep soft sediment section road and bridge connected structure according to claim 1, it is characterised in that the graded broken stone layer
Quantity is to be equipped with one layer of steel modeling grid between multilayer, every layer of graded broken stone layer, and the length of the steel modeling grid is more than institute
State the length of the powder-spray pile roadbed section of encryption arrangement.
3. foundation in deep soft sediment section road and bridge connected structure according to claim 2, it is characterised in that the graded broken stone layer
Thickness is 50cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720142619.5U CN206467512U (en) | 2017-02-17 | 2017-02-17 | Foundation in deep soft sediment section road and bridge connected structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720142619.5U CN206467512U (en) | 2017-02-17 | 2017-02-17 | Foundation in deep soft sediment section road and bridge connected structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206467512U true CN206467512U (en) | 2017-09-05 |
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ID=59708767
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720142619.5U Active CN206467512U (en) | 2017-02-17 | 2017-02-17 | Foundation in deep soft sediment section road and bridge connected structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110904823A (en) * | 2019-11-27 | 2020-03-24 | 昆山市交通工程质量监督站 | Bridge head bump treatment construction structure and construction method in high soft soil filling area |
| CN111549598A (en) * | 2020-04-26 | 2020-08-18 | 武汉理工大学 | Collapsible loess area highway reinforced bridgehead roadbed and construction method |
| JP2021031985A (en) * | 2019-08-27 | 2021-03-01 | 株式会社テノックス九州 | Soil improvement body, and construction method of the same |
| CN113512945A (en) * | 2021-04-20 | 2021-10-19 | 中交第三公路工程局有限公司 | Variable-rigidity splicing device and method for road bridge and road tunnel connecting sections |
-
2017
- 2017-02-17 CN CN201720142619.5U patent/CN206467512U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021031985A (en) * | 2019-08-27 | 2021-03-01 | 株式会社テノックス九州 | Soil improvement body, and construction method of the same |
| WO2021038894A1 (en) * | 2019-08-27 | 2021-03-04 | 株式会社テノックス九州 | Ground improving body and construction method therefor |
| CN110904823A (en) * | 2019-11-27 | 2020-03-24 | 昆山市交通工程质量监督站 | Bridge head bump treatment construction structure and construction method in high soft soil filling area |
| CN111549598A (en) * | 2020-04-26 | 2020-08-18 | 武汉理工大学 | Collapsible loess area highway reinforced bridgehead roadbed and construction method |
| CN111549598B (en) * | 2020-04-26 | 2021-07-20 | 武汉理工大学 | Construction method of highway reinforced bridgehead roadbed in collapsible loess region |
| CN113512945A (en) * | 2021-04-20 | 2021-10-19 | 中交第三公路工程局有限公司 | Variable-rigidity splicing device and method for road bridge and road tunnel connecting sections |
| CN113512945B (en) * | 2021-04-20 | 2023-05-05 | 中交第三公路工程局有限公司 | Variable-rigidity splicing device and method for road bridge and road tunnel connecting section |
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