CN106283971A - Medium-and low-speed maglev traffic engineering single line excavation location pile foundation joist type support rail girder construction - Google Patents
Medium-and low-speed maglev traffic engineering single line excavation location pile foundation joist type support rail girder construction Download PDFInfo
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- CN106283971A CN106283971A CN201610826216.2A CN201610826216A CN106283971A CN 106283971 A CN106283971 A CN 106283971A CN 201610826216 A CN201610826216 A CN 201610826216A CN 106283971 A CN106283971 A CN 106283971A
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- support rail
- pile foundation
- rail beam
- carrying structure
- reinforced concrete
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B25/00—Tracks for special kinds of railways
- E01B25/30—Tracks for magnetic suspension or levitation vehicles
- E01B25/305—Rails or supporting constructions
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Civil Engineering (AREA)
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Abstract
The invention belongs to that middle low speed magnetic suspension traffic engineering is low puts Line technology field, and disclose medium-and low-speed maglev traffic engineering single line excavation location pile foundation joist type support rail girder construction, including pile foundation carrying structure, reinforced concrete supporting beam, armored concrete support rail beam base plate, reinforced concrete beam type structure and support rail beam both sides backfill filler, described pile foundation carrying structure is provided with many, every described pile foundation carrying structure is all vertically arranged, and described reinforced concrete supporting beam is all accepted on the top of every described pile foundation carrying structure；Described reinforced concrete beam type structure is accepted on the top of described armored concrete support rail beam base plate；Being provided with gutter by described support rail beam both sides backfill filler, described gutter is provided with weathering away from described in the side of support rail beam both sides backfill filler.The present invention can meet the requirement that middle low speed magnetic suspension traffic engineering track structure is high to the deformation of support rail girder construction and settlement after construction, can meet again bedding long-time stability, durability and the requirement of construction quality controllability, and economy is more preferably.
Description
Technical field
The invention belongs to that middle low speed magnetic suspension traffic engineering is low puts Line technology field, more particularly, to middle low speed magnetic
Floating traffic engineering single line excavation location support rail girder construction pattern.
Background technology
Middle low speed magnetic suspension track traffic belongs to a kind of novel traffic mode, and achievement in research both domestic and external is less, the whole world
Open the circuit minority especially of operation.The middle low speed magnetic suspension railway business fortune that the most only in March, 2005, Japan's construction was opened
The middle low speed magnetic suspension railway business operating line that line-the East Hillside Line and in June, 2014, Korea S opened.And the middle low speed of China
Magnetic suspension traffic only National University of Defense technology's test wire, Green City Mountain test wire, Tangshan experiment line at present, but do not put into effect
Formal circuit, and all based on elevated structure, rarely seen about the low research put in terms of circuit support rail girder construction and application.
Middle low speed magnetic suspension hangs traffic civil engineering part and mainly comprises bridge, low circuit, station and the rolling stock section of putting, and low puts circuit
Being made up of with roadbed under support rail beam the section of track, support rail beam, the support rail beam of supporting track is arranged on the roadbed being made up of earth structure
On, the operation of middle low speed magnetic suspension train includes suspending, guide, drive and brake and is required for completing on support rail beam.Magnetic
Aerotrain is the highest to line construction deformation requirements, because the least the deforming it is possible to affect comfortableness even prestige by bus of structure
Side of body traffic safety, so the design of support rail beam is particularly significant.
Existing support rail girder construction is applied and be there is problems in that on circuit middle low speed magnetic suspension traffic low putting
(1) existing low circuit support rail girder construction of putting is arranged on roadbed earth structure, roadbed earth structure by
Filler fills compacting and forms, and compaction quality is wayward, and the later stage is susceptible to deformation, and settlement after construction is difficult to control to.
(2) low circuit support rail girder construction of putting requires height to the settlement after construction of roadbed and ground, and is routed through the ground in region
Matter condition is typically all complicated and changeable, uses conventional support rail beam structure construction difficult quality to control.
(3) owing to filler fills the low circuit earth structure of putting being compacted, there is vulnerability, and construction quality is difficult to
Control, relatively easily produce differential settlement, cause bedding vertical and horizontal bad stability under support rail beam, so that support rail beam
The stability in the large of structure is impaired.
Magnetic suspension is low, and to put circuit support rail beam higher to post-construction settlement of subgrade, bedding long-time stability and life requirement, when
When circuit is positioned at foundation stabilization location, taking traditional support rail girder construction pattern to there is the construction period long, construction quality is the most easily-controllable
The defects such as system, whole structural stability are poor and less economical.
Summary of the invention
For disadvantages described above or the Improvement requirement of prior art, the invention provides medium-and low-speed maglev traffic engineering single line and dig
Side's location pile foundation joist type support rail girder construction, can avoid the low defect putting circuit support rail girder construction of tradition, and construction quality is easier to
During controlling, long-time stability are more preferable, and it both meets, support rail girder construction is deformed by low speed magnetic suspension traffic engineering track structure
The requirement high with settlement after construction, meets again bedding long-time stability, durability and the requirement of construction quality controllability.
For achieving the above object, the invention provides medium-and low-speed maglev traffic engineering single line excavation location pile foundation joist type to hold
Beam-and-rail structure, it is characterised in that include that pile foundation carries structure, reinforced concrete supporting beam, armored concrete support rail beam base plate, reinforcing bar
Concrete beam-type structure and support rail beam both sides backfill filler, wherein,
Described pile foundation carrying structure is provided with many, and every described pile foundation carrying structure is all vertically arranged, and every institute
Described reinforced concrete supporting beam is all accepted on the top stating pile foundation carrying structure；
Described reinforced concrete supporting beam accepts described armored concrete support rail beam base plate；
The top of described pile foundation carrying structure embeds described reinforced concrete supporting beam and just connects with it, described armored concrete torr
Beam has just connect with described armored concrete support rail beam base plate or has overlapped, described armored concrete support rail beam base plate and described reinforced concrete
Soil girder structure formed by integrally casting molding thus collectively form armored concrete support rail beam；
Described reinforced concrete supporting beam both sides are provided with for limiting described armored concrete support rail beam base plate lateral displacement
Convex gear platform；
Described support rail beam both sides backfill filler is arranged on soft stratum, and by described support rail beam both sides backfill filler
Being provided with gutter, described gutter is provided with weathering away from the side of described support rail beam both sides backfill filler；
Described armored concrete support rail beam base plate is positioned at described support rail beam both sides backfill filler；
The lower end of every described pile foundation carrying structure is stretched in supporting course, with at soft stratum after described soft stratum
When producing sedimentation, described pile foundation carrying structure can bear negative friction, thus provides stable to concrete-steel reinforced concrete support rail beam
Bearing capacity, in case the differential settlement of support rail beam both sides backfill filler reduce armored concrete support rail beam vertical, longitudinally and
Lateral stiffness.
Preferably, described pile foundation carrying structure is cast-in-situ bored pile, and joist has just connect with support rail beam base plate or overlapped, with pile foundation
Carrying structure just connects.Using pin overlap joint in the position of support rail beam internode seam, remaining position uses and has just connect or overlapped.
Preferably, pile foundation carrying structure described in all these is ranks arrangements.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it is possible to show under acquirement
Benefit effect:
(1) the armored concrete support rail beam base plate of the present invention, reinforced concrete beam type structure all use armored concrete existing
Field one-piece casting, the two composition integral reinforced concrete structure is in order to directly take on track load and the magnetic-levitation train of track transmission
Load, then deadweight and upper load are passed to pile foundation rigidly connected with it carrying structure, structural reliability is high.
(2) the pile foundation carrying structure of the present invention is goed deep in supporting course, and roadbed produces when necessarily settling, and pile foundation carrying structure depends on
So can bear negative friction and stronger bearing capacity is provided, it is to avoid that causes because foundation stabilization quality is wayward is uneven heavy
The fall impact on support rail beam vertical and horizontal rigidity, structure vertical cross stiffness and structural reliability are more excellent.
(3) the pile foundation carrying structure control effect of settling of the present invention is preferable, therefore can save cutting bedding foundation stabilization and
Reduce cutting bedding replacement thickness, only need to meet the requirement of basic replacement thickness, can investment reduction, the reduction of erection time, have substantially
Technology and economic advantages.
(4) reinforced concrete supporting beam that pile foundation carrying structure and reinforced concrete floor are arranged, can be greatly reduced pile foundation
The stress concentration phenomenon of armored concrete support rail beam base plate at carrying structure；Further, since the lateral connection effect of joist, also increase
Add lateral stiffness and the ability of opposing differential settlement deformation of structure, the quantity of transverse pile foundation can have been reduced, reduce investment.
Accompanying drawing explanation
Fig. 1 is the schematic cross-sectional view of the present invention；
Fig. 2 is the schematic longitudinal section of the present invention；
Fig. 3 is the plane distribution schematic diagram of pile foundation of the present invention carrying structure；
Fig. 4 is the connection diagram that pile foundation joist of the present invention has just connect with armored concrete support rail beam base plate.
Fig. 5 is that pile foundation joist of the present invention overlaps connection diagram with armored concrete support rail beam base plate.
Fig. 6 is the cross sectional representation of pin in the present invention.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.If additionally, technical characteristic involved in each embodiment of invention described below
The conflict of not constituting each other just can be mutually combined.
Reference Fig. 1～Fig. 6, medium-and low-speed maglev traffic engineering single line excavation location pile foundation joist type support rail girder construction, including
Pile foundation carries structure 3, reinforced concrete supporting beam 90, armored concrete support rail beam base plate 2, reinforced concrete beam type structure 1 and holds
Beam-and-rail both sides backfill filler 4, wherein,
Described pile foundation carrying structure 3 is provided with many, and every described pile foundation carrying structure 3 is all vertically arranged, and every
Described reinforced concrete supporting beam 90 is all accepted on the top of described pile foundation carrying structure 3；
Described reinforced concrete supporting beam 90 accepts described armored concrete support rail beam base plate 2；
The top of described pile foundation carrying structure 3 embeds described reinforced concrete supporting beam 90 and just connects with it, described reinforced concrete
Soil joist 90 has just connect with described armored concrete support rail beam base plate 2 or has overlapped, and described armored concrete support rail beam base plate 2 is with described
Reinforced concrete beam type structure 1 is one-body molded thus collectively forms armored concrete support rail beam 9；
It is provided with on described reinforced concrete supporting beam 90 for limiting described armored concrete support rail beam base plate 2 lateral displacement
Convex gear platform 91；
Described support rail beam both sides backfill filler 4 is arranged on soft stratum 5, and backfills filler in described support rail beam both sides
4 sides are provided with gutter 7, and described gutter 7 is provided with weathering 8 away from the side of described support rail beam both sides backfill filler 4；
Described armored concrete support rail beam base plate 2 is positioned at described support rail beam both sides backfill filler 4；
The lower end of every described pile foundation carrying structure 3 is stretched in supporting course 6, with in weakness after described soft stratum 5
When stratum 5 produces sedimentation, described pile foundation carrying structure 3 can bear negative friction, thus carries to concrete-steel reinforced concrete support rail beam 9
For stable bearing capacity, in case the differential settlement of support rail beam both sides backfill filler 4 reduces the perpendicular of armored concrete support rail beam 9
To, vertical and horizontal rigidity.
Further, described pile foundation carrying structure 3 is cast-in-situ bored pile, and joist has just connect with support rail beam base plate or overlapped, with stake
Base carrying structure just connects.Using pin overlap joint in the position of support rail beam internode seam, remaining position uses and just connects.
Described pin 10 includes pre-buried connection reinforcing bar 10.1, Colophonium hemp cut 10.2 and rustless steel sleeve pipe 10.3, described pre-buried
Connect reinforcing bar 10.1 be positioned at described rustless steel sleeve pipe 10.3 and be fixedly installed described Colophonium hemp cut 10.2 between the two.
This structural shape can effectively solve in low speed magnetic suspension traffic engineering low to put circuit tight to post-construction settlement of subgrade requirement
Lattice, engineering that replacement thickness causes greatly is huge, it is big, long in time limit to invest to take traditional cutting to excavate, and backfill filler construction
Quality is wayward, bedding long-time stability and the problem of poor durability, thus improves and low put the reliable of circuit support rail girder construction
Degree, reduces engineering risk.
The armored concrete support rail beam 9 of the present invention uses reinforced concrete soil scene one-piece casting, to directly take on track lotus
Carrying and the magnetic-levitation train load of track transmission, then deadweight and upper load pass to the pile foundation carrying structure 3 of lower section, structure can
High by property, cutting bedding replacement thickness can be reduced, only need to meet the requirement of basic replacement thickness, can investment reduction, the reduction of erection time,
There are obvious technology and economic advantages.
Pile foundation carrying structure 3 uses cast-in-situ bored pile, transverse direction and longitudinal direction to have and is arranged with many reinforced concrete drillings fillings
Note stake, vertical and horizontal rigidity is big；And pile foundation carries structure 3 and gos deep into supporting course 6, when soft stratum 5 produces sedimentation, pile foundation carries
Knot still can bear negative friction and provide stronger bearing capacity to armored concrete support rail beam base plate 2.
The reinforced concrete supporting beam 90 that pile foundation carrying structure 3 and reinforced concrete floor 2 are arranged, can be greatly reduced pile foundation
The stress concentration phenomenon of armored concrete support rail beam base plate 2 at carrying structure 3；Further, since the lateral connection effect of joist 90,
Too increase lateral stiffness and the ability of opposing differential settlement deformation of structure, the quantity of transverse pile foundation can be reduced, reduce and throw
Money.
The making step that the present invention is concrete is as follows:
(1) excavating cut slope side slope is to designing at road bed absolute altitude, requires that the bedding carrying out necessity changes according to design and fills out；
(2) it is in subgrade cross section, vertical section direction construction drill bored concrete pile at reinforced concrete floor bottom surface absolute altitude, i.e.
Pile foundation carrying structure 3, drilled pile construction should use the construction technology little to the most filling roadbed disturbance；Reach to want at cast-in-situ bored pile
After seeking intensity, amputate pile crown, colligation concrete floor and the connection reinforcing bar with stake by code requirement；
(3) long to joist 90, convex gear platform 91, armored concrete support rail beam base plate 2 and armored concrete according to design joint
Girder structure 1 merogenesis formwork erection, one-time-concreting molding, carry out before pouring all kinds of built-in fitting such as pin 10, sleeper pedestal connect reinforcing bar,
The location of water conservancy diversion rail bearing built-in fitting etc. and installation；
(4) difference form removal after each parts concrete reaches design strength, then by armored concrete support rail beam base plate 2
In thickness range, bedding filler backfills, and outward-dipping weathering 8 is made in backfill face, carries out top layer by design requirement waterproof, and
Carry out weathering 8 on gutter 7 and gutter 7, i.e. form one for middle low speed magnetic suspension traffic engineering is low and put circuit list
Line excavation location detached pier pillar support rail girder construction.
As it will be easily appreciated by one skilled in the art that and the foregoing is only presently preferred embodiments of the present invention, not in order to
Limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, all should comprise
Within protection scope of the present invention.
Claims (5)
1. medium-and low-speed maglev traffic engineering single line excavation location pile foundation joist type support rail girder construction, it is characterised in that include pile foundation
Carrying structure, reinforced concrete supporting beam, armored concrete support rail beam base plate, reinforced concrete beam type structure and support rail beam both sides are returned
Filler, wherein,
Described pile foundation carrying structure is provided with many, and every described pile foundation carrying structure is all vertically arranged, and every described stake
Described reinforced concrete supporting beam is all accepted on the top of base carrying structure；
Described reinforced concrete supporting beam accepts described armored concrete support rail beam base plate；
Described reinforced concrete beam type structure is accepted on the top of described armored concrete support rail beam base plate；
Described pile foundation carrying structure top embed described reinforced concrete supporting beam just connect with it, described reinforced concrete supporting beam and
Described armored concrete support rail beam base plate has just connect or has overlapped, described armored concrete support rail beam base plate and described reinforced beam
Formula structural integrity pours molding thus collectively forms armored concrete support rail beam；
The convex for limiting described armored concrete support rail beam base plate lateral displacement it is provided with on described reinforced concrete supporting beam
Gear platform；
Described support rail beam both sides backfill filler is arranged on soft stratum, and in the other setting of backfill filler of described support rail beam both sides
Having gutter, described gutter is provided with weathering away from the side of described support rail beam both sides backfill filler；
Described armored concrete support rail beam base plate is positioned at described support rail beam both sides backfill filler；
The lower end of every described pile foundation carrying structure is stretched in supporting course after described soft stratum, to produce at soft stratum
During sedimentation, described pile foundation carrying structure can bear negative friction, thus provides stable holding to concrete-steel reinforced concrete support rail beam
Load power, in case the differential settlement of support rail beam both sides backfill filler reduces vertical, the vertical and horizontal of armored concrete support rail beam
Rigidity.
Medium-and low-speed maglev traffic engineering single line excavation location the most according to claim 1 pile foundation joist type support rail girder construction,
It is characterized in that, described pile foundation carrying structure is cast-in-situ bored pile, and reinforced concrete supporting beam has just connect with support rail beam base plate or overlapped,
Just connect with pile foundation carrying structure.
Medium-and low-speed maglev traffic engineering single line excavation location the most according to claim 1 pile foundation joist type support rail girder construction,
It is characterized in that, described pile foundation carrying structure (3) is cast-in-situ bored pile, and joist has just connect with support rail beam base plate or overlapped, with pile foundation
Carrying structure just connects.
Medium-and low-speed maglev traffic engineering single line excavation location the most according to claim 1 pile foundation joist type support rail girder construction,
It is characterized in that, pile foundation carrying structure described in all these is ranks arrangements.
Medium-and low-speed maglev traffic engineering two-wire embankment location the most according to claim 1 pile foundation joist type support rail girder construction,
It is characterized in that, described pin includes that pre-buried connection reinforcing bar, Colophonium hemp cut and rustless steel sleeve pipe, described pre-buried connection reinforcing bar are positioned at
Described rustless steel sleeve pipe is interior and is fixedly installed described Colophonium hemp cut between the two.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610826216.2A CN106283971B (en) | 2016-09-15 | 2016-09-15 | Medium-and low-speed maglev traffic engineering single line excavation location pile foundation joist type support rail girder construction |
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| CN201610826216.2A CN106283971B (en) | 2016-09-15 | 2016-09-15 | Medium-and low-speed maglev traffic engineering single line excavation location pile foundation joist type support rail girder construction |
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| CN106283971B CN106283971B (en) | 2017-11-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111270570A (en) * | 2020-03-16 | 2020-06-12 | 中铁二院工程集团有限责任公司 | Overhead soilless roadbed structure, roadbed assembly, roadbed system and construction method |
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| CN206157494U (en) * | 2016-09-15 | 2017-05-10 | 中铁第四勘察设计院集团有限公司 | Moderate -low speed magnetic levitation traffic engineering single line excavation location supporting beam of pile foundation formula support rail girder construction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111270570A (en) * | 2020-03-16 | 2020-06-12 | 中铁二院工程集团有限责任公司 | Overhead soilless roadbed structure, roadbed assembly, roadbed system and construction method |
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