CN106283971B - 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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- CN106283971B CN106283971B CN201610826216.2A CN201610826216A CN106283971B CN 106283971 B CN106283971 B CN 106283971B CN 201610826216 A CN201610826216 A CN 201610826216A CN 106283971 B CN106283971 B CN 106283971B
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- support rail
- pile foundation
- rail beam
- bearing structure
- bottom plate
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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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Abstract
Line technology field is put the invention belongs to middle low speed magnetic suspension traffic engineering is low, and disclose medium-and low-speed maglev traffic engineering single line excavation location pile foundation joist type support rail girder construction, filler is backfilled including pile foundation bearing structure, reinforced concrete supporting beam, armored concrete support rail beam bottom plate, reinforced concrete beam type structure and support rail beam both sides, the pile foundation bearing structure is provided with more, the every pile foundation bearing structure is vertically arranged, and the reinforced concrete supporting beam is accepted on the top of the every pile foundation bearing structure；Accept the reinforced concrete beam type structure in the top of the armored concrete support rail beam bottom plate；Gutter is provided with by the support rail beam both sides backfill filler, the gutter is provided with weathering described in the side away from support rail beam both sides backfill filler.The requirement that low speed magnetic suspension traffic engineering track structure deforms to support rail girder construction during the present invention can meet and settlement after construction is high, and can meets the requirement of bedding long-time stability, durability and construction quality controllability, and economy is more preferably.
Description
Technical field
Line technology field is put the invention belongs to middle low speed magnetic suspension traffic engineering is low, 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
The circuit for opening operation is even more minority.The middle low speed magnetic suspension railway business that only in March, 2005, Japan's construction was opened at present is transported
The middle low speed magnetic suspension railway business operating line that line-the East Hillside Line and in June, 2014, South Korea opened.And the middle low speed of China
Magnetic suspension traffic only has 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 based on elevated structure, it is rarely seen about the low research and application put in terms of circuit support rail girder construction.
Middle low speed magnetic suspension hang traffic civil engineering part mainly comprising bridge, it is low put circuit, station and rolling stock section, it is low to put circuit
It is made up of roadbed under the section of track, support rail beam and 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, be oriented to, drive and braking being required for what is completed on support rail beam.Magnetic
Aerotrain is very high to line construction deformation requirements, because the deformation of structure very little may influence comfortableness even prestige by bus
Traffic safety is coerced, so the design of support rail beam is particularly significant.
Existing support rail girder construction is applied has problems with middle low speed magnetic suspension traffic low put on circuit：
(1) existing low circuit support rail girder construction of putting is arranged on roadbed earth structure, roadbed earth structure by
Filler fills compacting and formed, and compaction quality is difficult to control, and the later stage easily deforms, and settlement after construction is difficult to control.
(2) the low settlement after construction requirement for putting circuit support rail girder construction to roadbed and ground is high, and is routed through the ground in region
Matter condition is typically all complicated and changeable, is difficult to control using the support rail beam structure construction quality of routine.
(3) there is vulnerability because filler fills the low circuit earth structure of putting for being compacted form, and construction quality is not easy
Control, relatively easily produces differential settlement, causes bedding vertical and horizontal bad stability under support rail beam, so that support rail beam
The resistance to overturning of structure is damaged.
The low circuit support rail beam of putting of magnetic suspension is higher to post-construction settlement of subgrade, bedding long-time stability and life requirement, when
When circuit is located at foundation stabilization location, traditional support rail girder construction pattern is taken construction period length to be present, construction quality is not easily-controllable
System, the defects of whole structural stability is poor and less economical.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the invention provides the digging of medium-and low-speed maglev traffic engineering single line
Square location pile foundation joist type support rail girder construction, traditional low the defects of putting circuit support rail girder construction can be avoided, construction quality is easier
Control, long-time stability are more preferable, and its both meet in low speed magnetic suspension traffic engineering track structure to support rail girder construction deform
The high requirement with settlement after construction, meets the requirement of bedding long-time stability, durability and construction quality controllability again.
To achieve 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 including pile foundation bearing structure, reinforced concrete supporting beam, armored concrete support rail beam bottom plate, reinforcing bar
Concrete beam-type structure and support rail beam both sides backfill filler, wherein,
The pile foundation bearing structure is provided with more, and the every pile foundation bearing structure is vertically arranged, and every institute
Accept the reinforced concrete supporting beam in the top for stating pile foundation bearing structure；
The reinforced concrete supporting beam accepts the armored concrete support rail beam bottom plate；
Accept the reinforced concrete beam type structure in the top of the armored concrete support rail beam bottom plate；
The top of the pile foundation bearing structure is embedded in the reinforced concrete supporting beam and its rigid connection, the armored concrete support
Beam and the armored concrete support rail beam bottom plate rigid connection or overlap joint, the armored concrete support rail beam bottom plate and the reinforced concrete
Native girder structure formed by integrally casting is molded so as to collectively form armored concrete support rail beam；
It is provided with the reinforced concrete supporting beam for limiting the armored concrete support rail beam bottom plate lateral displacement
Convex block machine；
The support rail beam both sides backfill filler is arranged on soft stratum, and by support rail beam both sides backfill filler
Gutter is provided with, side of the gutter away from support rail beam both sides backfill filler is provided with weathering；
The armored concrete support rail beam bottom plate is located in support rail beam both sides backfill filler；
The lower end of the every pile foundation bearing structure is stretched into supporting course after passing through the soft stratum, with soft stratum
When producing sedimentation, the pile foundation bearing structure can bear negative friction, stable so as to be provided to reinforcing bar armored concrete support rail beam
Bearing capacity, to prevent support rail beam both sides backfill filler differential settlement reduce armored concrete support rail beam it is vertical, longitudinal direction and
Lateral stiffness.
Preferably, the pile foundation bearing structure is cast-in-situ bored pile, reinforced concrete supporting beam and armored concrete support rail beam
Bottom plate rigid connection or overlap joint, with pile foundation bearing structure rigid connection.
Preferably, the pile foundation bearing structure is cast-in-situ bored pile, joist and armored concrete support rail beam bottom plate rigid connection or
Overlap joint, with pile foundation bearing structure rigid connection.
Preferably, all these described pile foundation bearing structures are arranged in ranks.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it can obtain down and show
Beneficial effect：
(1) armored concrete support rail beam bottom plate of the invention, reinforced concrete beam type structure are showed using armored concrete
Field one-piece casting, the two forms integral reinforced concrete structure to directly take on the magnetic-levitation train of track load and track transmission
Load, then deadweight and upper load are passed to and its rigidly connected pile foundation bearing structure, structural reliability height.
(2) pile foundation bearing structure of the invention is goed deep into supporting course, when roadbed produces certain sedimentation, pile foundation bearing structure according to
Can so negative friction be born and stronger bearing capacity is provided, it is uneven heavy caused by foundation stabilization quality is whard to control to avoid
Influence to support rail beam vertical and horizontal rigidity is dropped, and structure vertical cross stiffness and structural reliability are more excellent.
(3) pile foundation bearing structure control settlement effect of the invention is preferable, thus can save the foundation stabilization of cutting bedding and
Reduce cutting bedding replacement thickness, need to only meet the requirement of basic replacement thickness, can investment reduction, shorten the duration, have obvious
Technology and economic advantages.
(4) reinforced concrete supporting beam that pile foundation bearing structure and armored concrete support rail beam bottom plate are set, can subtract significantly
The stress concentration phenomenon of armored concrete support rail beam bottom plate at small pile foundation bearing structure；Further, since the lateral connection of joist is made
With also increasing the lateral stiffness of structure and the ability of resistance differential settlement deformation, the quantity of transverse pile foundation can be reduced, reduced
Investment.
Brief description of the drawings
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 bearing structure of the present invention；
Fig. 4 is the connection diagram of pile foundation joist of the present invention and armored concrete support rail beam bottom plate rigid connection.
Fig. 5 is pile foundation joist of the present invention and armored concrete support rail beam bottom plate overlap joint connection diagram.
Fig. 6 is the cross-sectional view of pin in the present invention.
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
Conflict can is not formed each other to be mutually combined.
1~Fig. 6 of reference picture, medium-and low-speed maglev traffic engineering single line excavation location pile foundation joist type support rail girder construction, including
Pile foundation bearing structure 3, reinforced concrete supporting beam 90, armored concrete support rail beam bottom plate 2, reinforced concrete beam type structure 1 and hold
Beam-and-rail both sides backfill filler 4, wherein,
The pile foundation bearing structure 3 is provided with more, and the every pile foundation bearing structure 3 is vertically arranged, and every
Accept the reinforced concrete supporting beam 90 in the top of the pile foundation bearing structure 3；
The reinforced concrete supporting beam 90 accepts the armored concrete support rail beam bottom plate 2；
The top of the pile foundation bearing structure 3 is embedded in the reinforced concrete supporting beam 90 and its rigid connection, the reinforced concrete
Native joist 90 and the rigid connection of armored concrete support rail beam bottom plate 2 or overlap joint, the armored concrete support rail beam bottom plate 2 with it is described
Reinforced concrete beam type structure 1 is integrally formed so as to collectively form armored concrete support rail beam 9；
It is provided with the reinforced concrete supporting beam 90 for limiting the lateral displacement of armored concrete support rail beam bottom plate 2
Convex block machine 91；
The support rail beam both sides backfill filler 4 is arranged on soft stratum 5, and backfills filler in the support rail beam both sides
Gutter 7 is provided with by the of 4, side of the gutter 7 away from support rail beam both sides backfill filler 4 is provided with weathering 8；
The armored concrete support rail beam bottom plate 2 is located in support rail beam both sides backfill filler 4；
The lower end of the every pile foundation bearing structure 3 is stretched into supporting course 6 after passing through the soft stratum 5, with weakness
When stratum 5 produces sedimentation, the pile foundation bearing structure 3 can bear negative friction, so as to be carried to reinforcing bar armored concrete support rail beam 9
For stable bearing capacity, the differential settlement to prevent support rail beam both sides backfill filler 4 reduces the perpendicular of armored concrete support rail beam 9
To, vertical and horizontal rigidity.
Further, the pile foundation bearing structure 3 is cast-in-situ bored pile, reinforced concrete supporting beam and armored concrete support rail beam
The rigid connection of bottom plate 2 or overlap joint, with pile foundation bearing structure rigid connection.Overlapped in the position of support rail beam internode seam using pin, remaining position
Using rigid connection.
The pin 10 includes pre-buried connection reinforcing bar, pitch hemp cut and stainless steel sleeve pipe, and the pre-buried connection reinforcing bar is located at
The pitch hemp cut is fixedly installed in the stainless steel sleeve pipe and between the two.
The low circuit of putting of low speed magnetic suspension traffic engineering is tight to post-construction settlement of subgrade requirement during the structural shape can be solved effectively
Lattice, taking traditional cutting to excavate, replacement thickness engineering caused greatly is huge, investment is big, long in time limit, and backfill filler construction
Quality is whard to control, bedding long-time stability and the problem of poor durability, and low the reliable of circuit support rail girder construction is put so as to improve
Degree, reduce 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
Carry and track transmission magnetic-levitation train load, then by conduct oneself with dignity and upper load pass to lower section pile foundation bearing structure 3, structure can
It is high by property, cutting bedding replacement thickness can be reduced, need to only meet the requirement of basic replacement thickness, can investment reduction, shorten the duration,
With obvious technology and economic advantages.
Pile foundation bearing structure 3 uses cast-in-situ bored pile, and transverse direction and longitudinal direction, which has, is arranged with more reinforced concrete drillings fillings
Stake is noted, vertical and horizontal rigidity is big；And pile foundation bearing structure 3 gos deep into supporting course 6, when soft stratum 5 produces sedimentation, pile foundation carrying
Knot can still bear negative friction and provide stronger bearing capacity to armored concrete support rail beam bottom plate 2.
The reinforced concrete supporting beam 90 that pile foundation bearing structure 3 and armored concrete support rail beam bottom plate 2 are set, can subtract significantly
The stress concentration phenomenon of armored concrete support rail beam bottom plate 2 at small pile foundation bearing structure 3；Further, since reinforced concrete supporting beam
90 lateral connection effect, the lateral stiffness of structure and the ability of resistance differential settlement deformation are also increased, transverse direction can be reduced
The quantity of pile foundation, reduce investment.
Specific making step of the invention is as follows：
(1) excavating cut slope side slope is changed according to the necessary bedding of design requirement progress and filled out to designing at road bed absolute altitude；
(2) in armored concrete support rail beam bottom plate bottom surface, absolute altitude is in subgrade cross section, vertical section direction construction drill fills
Stake, i.e. pile foundation bearing structure 3 are noted, drilled pile construction should use the construction technology small to filling roadbed disturbance；In drill-pouring
After stake reaches desired strength, pile crown, assembling reinforcement concrete support rail beam bottom plate 2 and the connection steel with stake are amputated by code requirement
Muscle；
(3) it is long to reinforced concrete supporting beam 90, convex block machine 91, the and of armored concrete support rail beam bottom plate 2 according to design section
The merogenesis formwork erection of reinforced concrete beam type structure 1, one-time-concreting shaping, carries out all kinds of built-in fittings such as pin 10, sleeper platform before pouring
The positioning and installation of seat connection reinforcing bar, water conservancy diversion rail bearing built-in fitting etc.；
(4) each part concrete distinguishes form removal after reaching design strength, then by armored concrete support rail beam bottom plate 2
Bedding filler backfills in thickness range, and backfill face makes outward-dipping weathering 8, top layer waterproof is carried out by design requirement, and
Weathering 8 on gutter 7 and gutter 7 is carried out, that is, is formed and a kind of is used for that middle low speed magnetic suspension traffic engineering is low to put circuit list
Line excavation location independence pier stud type support rail girder construction.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., all should be included
Within protection scope of the present invention.
Claims (4)
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 including pile foundation
Bearing structure, reinforced concrete supporting beam, armored concrete support rail beam bottom plate, reinforced concrete beam type structure and support rail beam both sides are returned
Filler, wherein,
The pile foundation bearing structure is provided with more, and the every pile foundation bearing structure is vertically arranged, and the every stake
Accept the reinforced concrete supporting beam in the top of base bearing structure；
The reinforced concrete supporting beam accepts the armored concrete support rail beam bottom plate；
Accept the reinforced concrete beam type structure in the top of the armored concrete support rail beam bottom plate；
The top of the pile foundation bearing structure is embedded in the reinforced concrete supporting beam and its rigid connection, the reinforced concrete supporting beam with
The armored concrete support rail beam bottom plate rigid connection or overlap joint, the armored concrete support rail beam bottom plate and the reinforced beam
Formula structural integrity pouring molding is so as to collectively forming armored concrete support rail beam；
The convex for limiting the armored concrete support rail beam bottom plate lateral displacement is provided with the reinforced concrete supporting beam
Block machine；
The support rail beam both sides backfill filler is arranged on soft stratum, and is set by support rail beam both sides backfill filler
There is gutter, side of the gutter away from support rail beam both sides backfill filler is provided with weathering；
The armored concrete support rail beam bottom plate is located in support rail beam both sides backfill filler；
The lower end of the every pile foundation bearing structure is stretched into supporting course after passing through the soft stratum, to be produced in soft stratum
During sedimentation, the pile foundation bearing structure can bear negative friction, so as to provide stable hold to reinforcing bar armored concrete support rail beam
Power is carried, vertical, the vertical and horizontal of armored concrete support rail beam are reduced to prevent the differential settlement of support rail beam both sides backfill filler
Rigidity.
2. pile foundation joist type support rail girder construction in medium-and low-speed maglev traffic engineering single line excavation location according to claim 1,
Characterized in that, the pile foundation bearing structure is cast-in-situ bored pile, reinforced concrete supporting beam and armored concrete support rail beam bottom plate
Rigid connection or overlap joint, with pile foundation bearing structure rigid connection.
3. pile foundation joist type support rail girder construction in medium-and low-speed maglev traffic engineering single line excavation location according to claim 1,
Characterized in that, the pile foundation bearing structure is cast-in-situ bored pile, joist and armored concrete support rail beam bottom plate rigid connection or overlap joint,
With pile foundation bearing structure rigid connection.
4. pile foundation joist type support rail girder construction in medium-and low-speed maglev traffic engineering single line excavation location according to claim 1,
Characterized in that, all these described pile foundation bearing structures are arranged in ranks.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 true CN106283971B (en) | 2017-11-17 |
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| CN111270570B (en) * | 2020-03-16 | 2024-06-18 | 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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2016
- 2016-09-15 CN CN201610826216.2A patent/CN106283971B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005057380A1 (en) * | 2005-11-30 | 2007-06-06 | Walter Sobolewski | Tubular, hollow, solid roadway |
| CN201473871U (en) * | 2009-08-26 | 2010-05-19 | 铁道第三勘察设计院集团有限公司 | Rail track of maglev train with middle and low-speed |
| CN203546524U (en) * | 2013-09-29 | 2014-04-16 | 中铁二院工程集团有限责任公司 | Medium-and-low-speed magnetically-suspended traffic integral-type road-bed track structure |
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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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