CN107119503A - A kind of railway roadbed foundation structure - Google Patents
A kind of railway roadbed foundation structure Download PDFInfo
- Publication number
- CN107119503A CN107119503A CN201710525388.0A CN201710525388A CN107119503A CN 107119503 A CN107119503 A CN 107119503A CN 201710525388 A CN201710525388 A CN 201710525388A CN 107119503 A CN107119503 A CN 107119503A
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- China
- Prior art keywords
- cushion cap
- railway roadbed
- foundation structure
- linking beam
- pile tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000007787 solid Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/58—Prestressed concrete piles
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Foundations (AREA)
Abstract
The invention discloses a kind of railway roadbed foundation structure, it is included along the spaced apart multiple cushion caps in station track direction, each cushion cap length direction and the station track central axis, and cushion cap bottom passes through pile tube support and ground build-in；The linking beam set between the two-by-two cushion cap adjacent along station track direction, linking beam two ends are connected with corresponding cushion cap respectively, and to carry train load as railway roadbed main body, road bed board is arranged on the linking beam, to be supported by the linking beam to road bed board；In this way so that train load can be delivered to cushion cap by the linking beam and transfer the load to pile tube by cushion cap, reliable and stable railway roadbed foundation structure is realized.The railway roadbed foundation structure of the present invention utilizes the combining structure form of pile tube and cushion cap and linking beam, form solid concrete roabed structure, its mechanical behavior and structure type rationally, can make full use of the stress performance and pile tube bearing capacity of beam and cushion cap, reach increase pile tube spacing, reduce the effect of pile tube consumption.
Description
Technical field
The invention belongs in railway traffic engineering field, and in particular to a kind of railway roadbed foundation structure, it is adaptable to track traffic
The solid concrete roabed of PHC pile tubes is used in engineering.
Background technology
All kinds of geological conditions are widely used in using the solid concrete roabed of PHC pipe pile foundations at present, engineer applied extensively, can
Meet the settlement request of station track.But, as illustrated in fig. 1 and 2, this railway roadbed basis generally adds the structure shape of raft plate using pile tube
Formula, pile tube along station track direction 3m to 3.5m, arrange by spacing, and pile tube arrangement is very intensive.Particularly in general vehicle section field, its
Station track number is more, and length is long, and this design pile tube spacing is small so that pile tube arrangement is intensive, therefore can use substantial amounts of pile tube, from
And causing quantities big, cost is high, long in time limit；Moreover, this pile tube and the railway roadbed foundation structure of the hardened conjunction of raft, its overall stress
There is still room for improvement for reasonability, and stress and structure type are not perfect enough, and pile tube bearing capacity is limited.
Therefore, it is necessary to propose a kind of railway roadbed foundation structure based on PHC pile tubes, the above-mentioned of current railway roadbed presence is solved
Problem.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the invention provides a kind of railway roadbed foundation structure, it is used
The structure design of optimization, i.e., using the combining structure form of pile tube and cushion cap and linking beam, form solid concrete roabed structure, its stress
Mechanism and structure type rationally, can make full use of the stress performance and pile tube bearing capacity of beam and cushion cap, reach between increase pile tube
Away from, reduce pile tube consumption effect.
To achieve the above object, it is proposed, according to the invention, provide a kind of railway roadbed foundation structure, it includes：
Along the spaced apart multiple cushion caps in station track direction, each cushion cap length direction and the station track central axis, cushion cap
Bottom is fixed by pile tube support with ground；
Held respectively with corresponding at the linking beam set between the cushion cap two-by-two adjacent along station track direction, the linking beam two ends
Platform is overlapped, and to carry train load as railway roadbed main body, road bed board is arranged on the linking beam, to pass through the linking beam pair
Road bed board is supported；In this way so that train load can be delivered to cushion cap by the linking beam and be transmitted load by cushion cap
To pile tube, reliable and stable railway roadbed foundation structure is realized.
As a further improvement on the present invention, the linking beam between adjacent two cushion cap is two, and it divides along station track center line
Station track both sides are not arranged on.
As a further improvement on the present invention, it is provided with plate in the space between two linking beams between two cushion cap
Body, to carry out drawknot outside plane.
As a further improvement on the present invention, the cushion cap is connected along two sides of station track width with linking beam,
That is two linking beam two ends between two cushion caps are connected on the side of correspondence cushion cap.
As a further improvement on the present invention, the linking beam is reinforced beam.
As a further improvement on the present invention, the plate body is armoured concrete slab, and its thickness, which is less than, links cantilever thickness.
As a further improvement on the present invention, it is supported below each cushion cap by two pile tubes.
As a further improvement on the present invention, it is additionally provided with concrete cushion between the cushion cap and pile tube.
In general, by the contemplated above technical scheme of the present invention compared with prior art, with following beneficial effect
Really：
(1) in railway roadbed foundation structure of the invention, directly held along station track direction arrangement reinforced beam below track
Train load is carried on a shoulder pole, using the form of pile tube+cushion cap+linking beam, load main body supporting structure, lotus are used as by the use of linking beam and cushion cap
Carry and cushion cap is delivered to by reinforced beam, then pile tube, its basic structure of this solid concrete roabed are transferred the load to by cushion cap
Rationally, carrying and settlement Control are reliable and stable for form mechanical behavior and structure type；
(2) railway roadbed foundation structure of the invention takes full advantage of the stress performance of each component, and Roadbed subsidence is by conventional stake
The control of raft foundation bulk settling is changed into beam deflection and pile foundation support table settlement Control, and then can increase the spacing of undercouch tube stake,
Reach the effect for reducing pile tube consumption, reducing cost, shortening the duration.
Brief description of the drawings
Fig. 1 is the floor plan of the railway roadbed foundation structure of use pile tube of the prior art and the hardened structure of raft；
Fig. 2 is the A-A profiles of railway roadbed foundation structure in Fig. 1；
Fig. 3 links the horizontal layout of girder construction solid concrete roabed foundation structure for the use pile tube+cushion cap+of the embodiment of the present invention
Figure；
Fig. 4 is the B-B profiles of railway roadbed foundation structure in Fig. 3；
In all of the figs, same reference represents identical technical characteristic, is specially：1- railway roadbed rafts plate, 2- rails
Road center line, 3- reinforced beams, 4- armoured concrete slabs, 5- cushion caps, 6- pile for prestressed pipe, 7- concrete cushions.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As long as in addition, technical characteristic involved in each embodiment of invention described below is each other not
Constituting conflict can just be mutually combined.
Fig. 3 links the horizontal layout of girder construction solid concrete roabed foundation structure for the use pile tube+cushion cap+of the embodiment of the present invention
Figure, Fig. 4 is the B-B profiles of railway roadbed foundation structure in Fig. 3.
Fig. 3 and Fig. 4 is the railway roadbed base form attachment structure of pile tube+cushion cap+linking beam of one embodiment of the invention, should
Foundation structure is included along the spaced apart multiple cushion caps 5 in station track direction, and it is set along station track direction is spaced apart, forms edge
Station track direction one arranges the queue arranged, and the distance between cushion cap can specifically be determined according to actual conditions.The length side of cushion cap 5
To vertical with track centerline, and the length direction of cushion cap 5 is station track width.Each cushion cap 5 each passes through prestressed pipe
Stake 6 is supported, and cushion cap 5 is carried by inserting the pile for prestressed pipe 6 of ground.
In the preferred embodiment, each bottom of cushion cap 5 is supported by two pile tubes 6, in so whole railway roadbed basis
Pile tube quantity is only 2 times of cushion cap quantity, and because cushion cap spacing can be set farther out, and cushion cap quantity in foundation structure
Seldom, therefore entirely pile tube quantity can be greatly reduced in foundation structure.
As shown in Figures 3 and 4, two-by-two between adjacent cushion cap 5, linking beam 3 is provided with, linking beam 3 is preferably string configuration,
Be respectively erected in along its length along between the adjacent cushion cap two-by-two 5 in station track direction, the two ends of linking beam 3 respectively with corresponding cushion cap
5 overlap joints, to carry train load as railway roadbed main body.
Linking beam 3 is preferably reinforced beam 3.In a preferred embodiment, the linking beam between adjacent two cushion cap
For two, it is separately positioned on station track both sides along station track center line.It is highly preferred that the sky between two linking beams between two cushion caps
Plate body 4 is provided with gap, to carry out drawknot outside plane, with further reinforcement structure resistance to overturning.Preferably, armored concrete
The back absolute altitude of beam 3 is identical with the floor elevation of armoured concrete slab 4.
Plate body 4 is preferably armoured concrete slab 4, and it is less than the size of linking beam 3 in the size of thickness direction.
Preferably, what two sides of the cushion cap 5 along station track width were provided between overlap joint platform, two cushion caps 5 two links
The respective two ends of beam 3 ride upon on the overlap joint platform of correspondence cushion cap 5 respectively.
The railway roadbed foundation structure of the present invention along station track direction below track by arranging that reinforced beam directly takes on
Train load, using the form of pile tube+cushion cap+linking beam, load main body supporting structure, load are used as by the use of linking beam and cushion cap
Cushion cap is delivered to by reinforced beam, then pile tube, its basic structure shape of this solid concrete roabed are transferred the load to by cushion cap
Rationally, carrying and settlement Control are reliable and stable for formula mechanical behavior and structure type.The structure takes full advantage of the stress of each component
Performance, Roadbed subsidence is changed into beam deflection and pile foundation support table settlement Control, Jin Erneng from conventional pile-raft foundation bulk settling control
Enough the spacing of increase road undercouch tube stake, reaches the effect for reducing pile tube consumption, reducing cost, shortening the duration.
In the foundation structure of the present invention, Roadbed subsidence should meet《Metro design code》(GB 50157) relevant regulations, have
Tiny fragments of stone, coal, etc. track circuit is no less than 200mm, and fastener, which is not to be exceeded, in the settling amount of non-fragment orbit circuit allows the amount of heightening.
The content that this specification is not described in detail belongs to prior art known to professional and technical personnel in the field.This area
Technical staff be readily appreciated that the foregoing is merely illustrative of the preferred embodiments of the present invention, be not intended to limit the invention, it is all
Any modifications, equivalent substitutions and improvements made within the spirit and principles in the present invention etc., should be included in the protection of the present invention
Within the scope of.
Claims (8)
1. a kind of railway roadbed foundation structure, it includes：
Along the spaced apart multiple cushion caps in station track direction, each cushion cap length direction and the station track central axis, cushion cap bottom
Fixed by pile tube support with ground；
Along the linking beam set between the adjacent cushion cap two-by-two in station track direction, the linking beam two ends are taken with corresponding cushion cap respectively
Connect, to carry train load as railway roadbed main body, road bed board is arranged on the linking beam, with by the linking beam to road
Bed board is supported；In this way so that train load can be delivered to cushion cap by the linking beam and be transferred the load to by cushion cap
Pile tube, realizes reliable and stable railway roadbed foundation structure.
2. railway roadbed foundation structure according to claim 1, wherein, the linking beam between adjacent two cushion cap is two,
It is separately positioned on station track both sides along station track center line.
3. railway roadbed foundation structure according to claim 2, wherein, the space between two linking beams between two cushion cap
In be provided with plate body, to carry out drawknot outside plane.
4. railway roadbed foundation structure according to any one of claim 1 to 3, wherein, the cushion cap is along station track width
Two sides be connected with linking beam, i.e. two linking beam two ends between two cushion caps be connected to correspondence cushion cap side
On.
5. railway roadbed foundation structure according to any one of claim 1 to 3, wherein, the linking beam is armored concrete
Beam.
6. railway roadbed foundation structure according to any one of claim 1 to 3, wherein, the plate body is armoured concrete slab,
Its thickness, which is less than, links cantilever thickness.
7. railway roadbed foundation structure according to any one of claim 1 to 3, wherein, pass through two below each cushion cap
Individual pile tube is supported.
8. railway roadbed foundation structure according to any one of claim 1 to 3, wherein, also set between the cushion cap and pile tube
It is equipped with concrete cushion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710525388.0A CN107119503A (en) | 2017-06-30 | 2017-06-30 | A kind of railway roadbed foundation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710525388.0A CN107119503A (en) | 2017-06-30 | 2017-06-30 | A kind of railway roadbed foundation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107119503A true CN107119503A (en) | 2017-09-01 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710525388.0A Pending CN107119503A (en) | 2017-06-30 | 2017-06-30 | A kind of railway roadbed foundation structure |
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| CN (1) | CN107119503A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108824160A (en) * | 2018-05-03 | 2018-11-16 | 成都天府轨谷科技有限公司 | Integrated continuous supporting track system and its construction method |
| CN113931013A (en) * | 2021-10-22 | 2022-01-14 | 中铁第六勘察设计院集团有限公司 | Railway cylinder foundation beam plate type structure and design method thereof |
| CN114893037A (en) * | 2022-05-30 | 2022-08-12 | 中铁第四勘察设计院集团有限公司 | Train overhauls trench |
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| CN201433334Y (en) * | 2009-06-10 | 2010-03-31 | 京沪高速铁路股份有限公司 | Frame beam type ballastless track |
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- 2017-06-30 CN CN201710525388.0A patent/CN107119503A/en active Pending
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108824160A (en) * | 2018-05-03 | 2018-11-16 | 成都天府轨谷科技有限公司 | Integrated continuous supporting track system and its construction method |
| CN113931013A (en) * | 2021-10-22 | 2022-01-14 | 中铁第六勘察设计院集团有限公司 | Railway cylinder foundation beam plate type structure and design method thereof |
| CN113931013B (en) * | 2021-10-22 | 2023-09-15 | 中铁第六勘察设计院集团有限公司 | Railway barrel base beam plate type structure and design method thereof |
| CN114893037A (en) * | 2022-05-30 | 2022-08-12 | 中铁第四勘察设计院集团有限公司 | Train overhauls trench |
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Application publication date: 20170901 |