CN207210848U - Concurrent operation high-speed railway separate type circuit road structure - Google Patents
Concurrent operation high-speed railway separate type circuit road structure Download PDFInfo
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- CN207210848U CN207210848U CN201720367478.7U CN201720367478U CN207210848U CN 207210848 U CN207210848 U CN 207210848U CN 201720367478 U CN201720367478 U CN 201720367478U CN 207210848 U CN207210848 U CN 207210848U
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- shaped groove
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Abstract
It the utility model is related to construction of railways technical field, and in particular to a kind of concurrent operation high-speed railway separate type circuit road structure.Including along the equally distributed multiple rows of cast-in-situ bored pile in width of railway subgrade formation direction, the cast-in-situ bored pile is often arranged including equally distributed multiple along railway bed length direction, also include being arranged at the reinforced concrete U-shaped groove at the top of the cast-in-situ bored pile, at the top of the cast-in-situ bored pile in the embedded reinforced concrete U-shaped trough floor, and be rigidly connected with the reinforced concrete U-shaped trough floor, fill roadbed filling in the reinforced concrete U-shaped groove.Reinforced concrete U-shaped groove plays a part of closing slope, on the one hand reduces construction costs, and additional load intrusion on the other hand can be avoided operation roadbed.
Description
Technical field
It the utility model is related to construction of railways technical field, and in particular to a kind of concurrent operation high-speed railway separate type circuit
Road structure.
Background technology
Indulge four horizontal High-speed Railway Networks and build up substantially in China four.Newly-built high-speed railway, to save construction land, or
Also for existing High-speed Railway Network can be introduced, the technical barrier of concurrent operation high-speed railway is increasingly encountered.Such as business
Hangzhoupro high-speed railway is closed, the problem of many places concurrent operation circuit base be present on Shui Jiahu, Hefei Bei Cheng, Chaohu, Huzhou and other places.
Soft clay area, because geological conditions is weak, soil layer low intensity, compressibility are big, and increase and decrease circuit must use rational
Foundation treatment mode, keeps the stability of ground, while controls the sedimentation of ground.General fast railway, conventional foundation treatment mode
There are flexibility, the half-rigidity piles composite foundations such as mixing pile, rotary churning pile, CFG stakes.The cost of this kind of stake is moderate, by being laid in stake top
Mattress layer, with soft soil foundation form compound foundation, increase the composite modulus of foundation soil, can greatly reduce to increase and build the total heavy of circuit
Drop, and the stability of ground is can guarantee that, the extensive use in general fast Existing Railway Line increase and decrease two wires basement process.
This kind of basement process, can no doubt reduce the sedimentation of increase and decrease circuit, but not be avoided that foundation additional stress spreads
Into operating line roadbed substrate, cause the additional settlement of operating line.Another defect is construction technology problem.Mixing pile,
The construction equipment of CFG stakes is tall and big, is toppled if being produced during construction, will cause severe safety accident；Rotary churning pile spray pressure up to 15~
30MPa, necessarily cause horizontal displacement or the protuberance of operating line roadbed.
When operating line is general fast railway, these defects can be overcome by measures such as speed limit, adjustment railway roadbeds.At a high speed
The settlement Control standard of railway is in grade, very strictly.These treatment measures cause operation roadbed additional settlement to deform
Even offset, be that high-speed railway subgrade institute is unacceptable.Therefore, there is an urgent need to it is a kind of safe and reliable, construction equipment is flexibly light
Just foundation treatment mode, for the increase and decrease roadbed basement process of concurrent operation high-speed railway, the heavy of increase and decrease circuit can be controlled
Drop and stably, and can ensures the operation security of operation high-speed railway subgrade.
Utility model content
In order to solve the above technical problems, the utility model provide it is a kind of can avoid new line construction cause operating line
Additional settlement and the concurrent operation high-speed railway separate type circuit road structure of skew.
A kind of concurrent operation high-speed railway separate type circuit road structure of the utility model, its technical scheme are：Including edge
The equally distributed multiple rows of cast-in-situ bored pile in width of railway subgrade formation direction, often arranging the cast-in-situ bored pile is included along railway bed length
Direction is equally distributed multiple, in addition to is arranged at the reinforced concrete U-shaped groove at the top of the cast-in-situ bored pile, and the drilling fills
Note stake top portion to be embedded in the reinforced concrete U-shaped trough floor, and be rigidly connected with the reinforced concrete U-shaped trough floor, institute
State in reinforced concrete U-shaped groove and filled roadbed filling.
Further, the cast-in-situ bored pile bottom penetrates hard stratum or rock stratum of the Soft Soil Layer to bottom.
Further, steel pile casting, the steel shield are provided with outside the cast-in-situ bored pile of operation high-speed railway subgrade side
Cylinder bottom penetrates Soft Soil Layer bottom.
Further, the steel pile casting thickness is 6~12mm.
The beneficial effects of the utility model：
1st, drilled pile construction can use shorter and smaller portable appliance, avoid equipment from invading limit, jeopardize the safety of operating line.
2nd, the row hole drilling stake of operating line one is closed on using steel pile casting retaining wall to Soft Soil Layer bottom, and can prevent should in boring procedure
Power discharges the sedimentation and skew for causing operating line.
Embankment load, can be transferred to ground depths by the 3rd, hard stratum or rock stratum of the saturating Soft Soil Layer in drilled pile bottom to bottom,
Avoid causing operating line additional deformation.
4th, reinforced concrete U-shaped groove plays a part of closing slope, on the one hand reduces construction costs, on the other hand can avoid adding
Load intrusion is operation roadbed.
Brief description of the drawings
Fig. 1 is concurrent operation high-speed railway separate type circuit road structure schematic diagram；
Fig. 2 is the utility model cast-in-situ bored pile and reinforced concrete U-shaped groove connection diagram；
In figure：1-operation high-speed railway subgrade, 2-newly built railway roadbed, 3-cast-in-situ bored pile, 4-steel pile casting, 5-
Reinforced concrete U-shaped groove, 6-separation net, 7-steel reinforcement cage.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail：
As shown in figure 1, concurrent operation high-speed railway separate type circuit road structure is included along the width side of newly built railway roadbed 1
To equally distributed multiple rows of cast-in-situ bored pile 3, include per gang drill hole pouring pile 3 equally distributed more along railway bed length direction
It is individual.The bottom of cast-in-situ bored pile 3 penetrates hard stratum or rock stratum of the Soft Soil Layer to bottom, and the top of cast-in-situ bored pile 3 is equipped with 0.1~
Concrete cushion thick 0.2m, reinforced concrete U-shaped groove 5 is provided with concrete cushion, described in the top of cast-in-situ bored pile 3 is embedded
In the bottom plate of reinforced concrete U-shaped groove 5, and it is rigidly connected with the bottom plate of reinforced concrete U-shaped groove 5, is filled out in reinforced concrete U-shaped groove 5
Roadbed filling is built.Wherein, steel pile casting 4, the bottom of steel pile casting 4 are provided with outside the cast-in-situ bored pile 3 of operation high-speed railway side
Portion penetrates Soft Soil Layer bottom.The wall thickness of steel pile casting 4 is according to the difference of weak soil thickness, typically using 6~12mm, steel pile casting when weak soil is thin
Thin, steel pile casting is thick during weak soil thickness.Reinforced concrete U-shaped groove 5 is poured by mould laying U-type groove reinforcing bar and formed.
Specific construction process is as follows：
Before construction, separation net 6 or separation wall are set in operation high-speed railway subgrade 1 side, workmen is prevented and sets
It is standby to enter on operation line, crisis operating line safety.Steel pile casting 4 is pressed into Soft Soil Layer bottom, construction and closes on operation high-speed iron
One gang drill hole pouring pile of the side of road roadbed 1 is to stake bottom absolute altitude is designed, and being put into steel reinforcement cage 7, (depth of steel reinforcement cage 7 is more than weak soil thickness
Degree), and the penetration concrete in steel reinforcement cage 7.Wherein, the processing of newly built railway roadbed 2 is using at reinforced concrete bored pile
Reason, more than strength grade of concrete C30.Cast-in-situ bored pile 3 uses rectangle or quincuncial arrangement, and stake spacing need to calculate according to load
It is determined that.After the row hole drilling cast-in-place pile concrete intensity for closing on operation high-speed railway subgrade 1 side reaches more than 70%, successively
The construction of remaining cast-in-situ bored pile 3 is finished；Laid below the top rebars concrete U-type groove 5 of cast-in-situ bored pile 3 design bottom absolute altitude
Concrete cushion (not shown), the concrete cushion of laying is 0.1~0.2m；The mould of the good reinforced concrete U-shaped groove 5 of branch
Plate, colligation U-type groove reinforcing bar, and the top of 3 steel reinforcement cage of cast-in-situ bored pile 7 is goed deep into reinforced concrete U-shaped groove 5；Then pour mixed
Solidifying soil, after the inner concrete intensity of reinforced concrete U-shaped groove 5 reaches more than 70%, placement in layers roadbed filling.Wherein, except facing
One gang drill hole pouring pile of nearly operation high-speed railway subgrade 1 side retains steel pile casting 4, after remaining bored pile construction,
4 are taken to go out steel pile casting.
It is described above, only specific embodiment of the present utility model, it is noted that any to be familiar with those skilled in the art
Member is in the technical scope disclosed by the utility model, and the change or replacement that can readily occur in should all be covered in the utility model
Protection domain within.
Claims (3)
1. a kind of concurrent operation high-speed railway separate type circuit road structure, including it is equally distributed along width of railway subgrade formation direction
Multiple rows of cast-in-situ bored pile (3), the cast-in-situ bored pile (3) is often arranged including equally distributed multiple along railway bed length direction,
It is characterized in that：Also include being arranged at the reinforced concrete U-shaped groove (5) at the top of the cast-in-situ bored pile (3), the drill-pouring
At the top of stake (3) in embedded reinforced concrete U-shaped groove (5) bottom plate, and it is rigid with reinforced concrete U-shaped groove (5) bottom plate
Connection, the interior drilling filled roadbed filling, closed on operation high-speed railway subgrade (1) side of the reinforced concrete U-shaped groove (5)
Steel pile casting (4) is provided with outside bored concrete pile (3), steel pile casting (4) bottom penetrates Soft Soil Layer bottom.
2. concurrent operation high-speed railway separate type circuit road structure as claimed in claim 1, it is characterised in that：The drilling fills
Note stake (3) bottom penetrates hard stratum or rock stratum of the Soft Soil Layer to bottom.
3. concurrent operation high-speed railway separate type circuit road structure as claimed in claim 1, it is characterised in that：The steel pile casting
(4) thickness is 6~12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720367478.7U CN207210848U (en) | 2017-04-10 | 2017-04-10 | Concurrent operation high-speed railway separate type circuit road structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720367478.7U CN207210848U (en) | 2017-04-10 | 2017-04-10 | Concurrent operation high-speed railway separate type circuit road structure |
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| Publication Number | Publication Date |
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| CN207210848U true CN207210848U (en) | 2018-04-10 |
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| CN201720367478.7U Active CN207210848U (en) | 2017-04-10 | 2017-04-10 | Concurrent operation high-speed railway separate type circuit road structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107034744A (en) * | 2017-04-10 | 2017-08-11 | 中铁第四勘察设计院集团有限公司 | Concurrent operation high-speed railway separate type circuit road structure and its construction method |
| CN108642975A (en) * | 2018-03-08 | 2018-10-12 | 中国铁路设计集团有限公司 | A method of for being lifted Settlement diseases railway bed |
-
2017
- 2017-04-10 CN CN201720367478.7U patent/CN207210848U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107034744A (en) * | 2017-04-10 | 2017-08-11 | 中铁第四勘察设计院集团有限公司 | Concurrent operation high-speed railway separate type circuit road structure and its construction method |
| CN108642975A (en) * | 2018-03-08 | 2018-10-12 | 中国铁路设计集团有限公司 | A method of for being lifted Settlement diseases railway bed |
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