CN106283951A - Medium-and low-speed maglev single line embankment location pile foundation joist type support rail beam transition section structure - Google Patents
Medium-and low-speed maglev single line embankment location pile foundation joist type support rail beam transition section structure Download PDFInfo
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- CN106283951A CN106283951A CN201610826059.5A CN201610826059A CN106283951A CN 106283951 A CN106283951 A CN 106283951A CN 201610826059 A CN201610826059 A CN 201610826059A CN 106283951 A CN106283951 A CN 106283951A
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- Prior art keywords
- support rail
- rail beam
- base plate
- pile foundation
- armored concrete
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Classifications
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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
- E01B2/00—General structure of permanent way
- E01B2/006—Deep foundation of tracks
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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
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
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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
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/008—Drainage of track
-
- 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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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/34—Foundations for sinking or earthquake territories
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/07—Drainage
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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
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/08—Deep or vertical foundation
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/09—Ballastless systems
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 single line embankment location pile foundation joist type support rail beam transition section structure, including roadbed filling under pile foundation carrying structure, reinforced concrete supporting beam, armored concrete support rail beam base plate, reinforced concrete beam type structure, support rail beam and support rail beam both sides backfill filler, bridge abutment, trapezoidal filling body and headwall, described pile foundation carrying structure is provided with many；Described reinforced concrete beam type structure is accepted on the top of described armored concrete support rail beam base plate；Described support rail beam both sides backfill filler is accepted by roadbed filling under described support rail beam.Long-time stability of the present invention are more preferable, both met the deformation of support rail girder construction and the high request of settlement after construction, meet again the requirement of the controllability of bedding long-time stability, durability and construction quality, effectively realize magnetic suspension elevated structure and the low smoothly transition putting line transition section F rail.
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 single line embankment location transition section structure 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 relevant elevated structure and the low research put in terms of line transition segment structure and
Application.
In wheel rail high speed railway, there is substantial amounts of bridge changeover portion roadbed, high-speed railway changeover portion roadbed uses mostly
Trapezium structure, have employed cement stabilized graded macabam in trapezoidal scope and fills, and have employed than the non-higher compacting of changeover portion roadbed
Requirement.During built high-speed railway operation, bridge changeover portion scope, often there is non-fragment orbit protuberance, gap, grout
Etc. disease.The reason of this disease, is owing to changeover portion roadbed remains by the earth structure of rock and soil constitution, changeover portion mostly
After roadbed is laid a railway track, still can occur necessarily to settle, there is poor (the specification permission settlement after construction of certain settlement after construction with bridge abutment
Difference is not more than 5mm), owing to high-speed railway uses seamless track steel rail, in the range of specification allows settlement after construction difference, have no effect on
Normal operation, but the diseases such as non-fragment orbit protuberance, gap, grout can be caused, need timely repair and maintenance.
The F rail of medium-and low-speed maglev traffic line is to be used fishplate bar scene to be spliced by a short rail successively, and leaves between rail
Seam, meets the ride comfort of the F rail of magnetic-levitation train even running requirement, and under rail to be leaned on, works ensures.Low put circuit location,
Under support rail beam, basis is by the earth structure of rock and soil constitution, is affected by the factor such as landform, geological conditions, and quality is the most easily-controllable
System, is easily generated differential settlement under load and various factor of natural environment effect, can occur unavoidably and elevated structure bridge bridge
The settlement after construction that platform is inconsistent, produces settlement after construction poor, and low circuit of putting occurs in that differential settlement with bridge abutment position, necessarily affects
The ride comfort of F rail, in some instances it may even be possible to cause F rail to produce the problem such as faulting of slab ends, deformation, time serious, will affect the normal fortune of maglev vehicle
Battalion.
Summary of the invention
For disadvantages described above or the Improvement requirement of prior art, the invention provides medium-and low-speed maglev single line embankment location stake
Base beam type support rail beam transition section structure, can avoid the low defect putting circuit support rail girder construction of tradition, and construction quality is easier to control
System, long-time stability are more preferable, and its both meet in low speed magnetic suspension traffic engineering track structure to the deformation of support rail girder construction and
The high request of settlement after construction, meets again the requirement of the controllability of bedding long-time stability, durability and construction quality, and economy
More preferably.
For achieving the above object, the invention provides the pile foundation joist type support rail beam transition of medium-and low-speed maglev single line embankment location
Segment structure, it is characterised in that include that pile foundation carrying structure, reinforced concrete supporting beam, armored concrete support rail beam base plate, reinforcing bar mix
Roadbed filling and support rail beam both sides backfill filler, bridge abutment, trapezoidal filling body and headwall under solidifying soil girder structure, support rail beam,
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；
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, and in across place pile foundation carry
The top of structure still should embed described armored concrete support rail beam base plate in addition to embedding described reinforced concrete supporting beam and just connect with it,
Described armored concrete support rail beam base plate is with described reinforced concrete beam type structural integrity molding thus collectively forms reinforced concrete
Tu Chengguiliang；
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；
Under described support rail beam, roadbed filling is arranged between shallow layer reinforcement district and described armored concrete support rail beam base plate, with
For providing operation platform for described armored concrete support rail beam base plate, reinforced beam and support rail beam both sides backfill filler,
And provide lateral support for described pile foundation carrying structure；Wherein, described shallow layer reinforcement district is arranged on the shallow top layer of soft stratum, and
And roadbed filling and the vertical consistency of described reinforced concrete beam type structure under described shallow layer reinforcement district, described support rail beam；
Described support rail beam both sides backfill filler is accepted by roadbed filling under described support rail beam, and described support rail beam both sides
Backfill filler props up the both sides of described armored concrete support rail beam base plate, so that described armored concrete support rail beam base plate is risen protection
Act on and retrain the transverse shifting of described armored concrete support rail beam base plate, and maintenance passage is provided；
Under described support rail beam roadbed filling and described support rail beam both sides backfill filler collectively form filler filling body, described in fill out
Material filling body both sides are provided with the first weathering；
The lower end of every described pile foundation carrying structure sequentially passes through roadbed filling under described support rail beam, described shallow layer reinforcement district
Stretching in supporting course with after described soft stratum, with when soft stratum produces sedimentation, described pile foundation carrying structure can be born negative
Frictional resistance, thus provide stable bearing capacity to armored concrete support rail beam base plate and reinforced concrete beam type structure, to reduce
The adverse effect vertical, the vertical and horizontal rigidity of armored concrete support rail beam produced because of the sedimentation of filler filling body；
One end of described armored concrete support rail beam base plate is overlapped on described bridge abutment, and both are by pin even
Connect release longitudinal restraint, and limit lateral displacement；
The both sides of one end that described armored concrete support rail beam base plate is overlapped on described bridge abutment are respectively provided with described end
Wall, and the headwall of described every side backfills filler with the support rail beam both sides of respective side respectively and abuts, and protects described support rail for gear
Beam both sides backfill filler；
Described trapezoidal filling body is arranged between shallow layer reinforcement district and described armored concrete support rail beam base plate, and it is with described
Under support rail beam, roadbed filling abuts near one end of described bridge abutment, for accepting at the bottom of described armored concrete support rail beam
Plate, support rail beam both sides backfill filler and headwall；
Described trapezoidal filling body both sides are provided with second weathering consistent with the described first weathering gradient.
Preferably, described pile foundation carrying structure is cast-in-situ bored pile, reinforced concrete supporting beam and support rail beam base plate just connect or
Overlap joint, just connects with pile foundation carrying structure.Position reinforced concrete supporting beam at support rail beam internode seam uses pin with support rail beam base plate
Nail overlap joint, remaining position uses and just connects.
Preferably, described support rail beam both sides backfill the height of filler and the height phase of described armored concrete support rail beam base plate
Deng.
Preferably, pile foundation carrying structure described in all these is ranks arrangements.
Preferably, described trapezoidal filling body uses cement stabilized graded macabam to mix cement production systD.
Preferably, described armored concrete support rail beam base plate is overlapped on one end of described bridge abutment and described bridge abutment
Between be provided with wear-resisting sliding layer.
Preferably, described pin includes pre-buried connection reinforcing bar, Colophonium hemp cut and rustless steel sleeve pipe, described pre-buried connection reinforcing bar
It is positioned at described rustless steel sleeve pipe and described Colophonium hemp cut is set between the two.
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 embankment 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 because of filling compaction with foundation stabilization quality is wayward causes
The differential settlement impact on support rail beam vertical and horizontal rigidity, structure vertical cross stiffness and structural reliability are more excellent.
(3) put circuit soft soil zone low, according to embankment stability need the shallow top layer of soft stratum is carried out necessity
Reinforcing, its reinforcement depth is by embankment stability control, compared to by settling and stablizing tradition when Two indices controls solely
For base reinforcing mode, shallow layer reinforcement district reinforcement depth is little, can effectively control roadbed reclamation and roadbed in conjunction with pile foundation carrying structure
Settlement after construction.Non-soft soil zone more can avoid embankment to put the stiffening basic ground of the wide area produced behind slope, and
Pile foundation carrying structure construction quality is more easy to control, can effectively control construction quality, investment reduction, reduction of erection time, has significantly
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 laterally the connecting of reinforced concrete supporting beam
Connect effect, too increase lateral stiffness and the ability of opposing differential settlement deformation of structure, the quantity of transverse pile foundation can be reduced,
Reduce investment.
(5) armored concrete support rail beam base plate is overlapped on bridge abutment near one end of elevated bridge, passes through pin
Connect, it is to avoid the sedimentation faulting of slab ends that causes because of measures of foundation treatment difference between the two, it is ensured that magnetic float F rail low put circuit with
Bridge abutment connected position will not produce faulting of slab ends, effectively realizes magnetic suspension traffic engineering elevated structure and puts line transition section F with low
The smoothly transition of rail.
Accompanying drawing explanation
Fig. 1 is the schematic longitudinal section of the present invention；
Fig. 2 is the generalized section in Fig. 1 along I-I line；
Fig. 3 is the generalized section in Fig. 1 along II-II line；
Fig. 4 is the generalized section in Fig. 1 along III-III line；
Fig. 5 is that in the present invention, armored concrete support rail beam base plate is overlapped on the floor map on bridge abutment；
Fig. 6 is that pile foundation reinforced concrete supporting beam of the present invention has just connect connection diagram with armored concrete support rail beam base plate.
Fig. 7 is that pile foundation reinforced concrete supporting beam of the present invention overlaps connection diagram with armored concrete support rail beam base plate.
Fig. 8 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.
With reference to Fig. 1～Fig. 8, medium-and low-speed maglev single line embankment location pile foundation joist type support rail beam transition section structure, including stake
Base carrying structure 3, reinforced concrete supporting beam 90, armored concrete support rail beam base plate 2, reinforced concrete beam type structure 1, support rail beam
Lower roadbed filling 5, support rail beam both sides backfill filler 4, bridge abutment 12, trapezoidal filling body 14 and headwall 13, 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；
Described reinforced concrete beam type structure 1 is accepted on the top of described armored concrete support rail beam base plate 2；
Described pile foundation carrying structure 3 top embed described reinforced concrete supporting beam 90 just connect with it, and in across locate pile foundation
The top of carrying structure 3 still should embed described armored concrete support rail beam base plate 2 in addition to embedding described reinforced concrete supporting beam 90
Just connecing with it, described armored concrete support rail beam base plate 2 is with described reinforced concrete beam type structure 1 formed by integrally casting molding thus is total to
With constituting 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；
Under described support rail beam roadbed filling 5 be arranged on shallow layer reinforcement district 6 and described armored concrete support rail beam base plate 2 it
Between, provide for for described armored concrete support rail beam base plate 2, reinforced beam 90 and support rail beam both sides backfill filler 4
Operation platform, and provide lateral support for described pile foundation carrying structure 3；Wherein, described shallow layer reinforcement district 6 is arranged on soft stratum
Roadbed filling 5 and described reinforced concrete beam type structure 1 under the shallow top layer of 7, and described shallow layer reinforcement district 6, described support rail beam
Vertical consistency；
Described support rail beam both sides backfill filler 4 is accepted by roadbed filling 5 under described support rail beam, and described support rail beam two
Side backfill filler 4 props up the both sides of described armored concrete support rail beam base plate 2, with to described armored concrete support rail beam base plate 2
Shield and retrain the transverse shifting of described armored concrete support rail beam base plate 2, and maintenance passage is provided；
Under described support rail beam, roadbed filling 5 and described support rail beam both sides backfill filler 4 collectively form filler filling body 10, institute
State and on filler filling body 10, be provided with the first weathering 11；
The lower end of every described pile foundation carrying structure 3 sequentially passes through roadbed filling 5, described shallow layer reinforcement under described support rail beam
Stretching into behind district 6 and described soft stratum 7 in supporting course 8, with when soft stratum 7 produces sedimentation, described pile foundation carrying structure 3 can
Bear negative friction, thus provide stable carrying to armored concrete support rail beam base plate 2 and reinforced concrete beam type structure 1
Power, to reduce because vertical, the vertical and horizontal rigidity of armored concrete support rail beam 9 are produced not by the sedimentation of filler filling body 10
Profit impact；
One end of described armored concrete support rail beam base plate 2 is overlapped on described bridge abutment 12, and both pass through pin
Follow closely 15 Connection Release longitudinal restraints, and limit lateral displacement；
The both sides of one end that described armored concrete support rail beam base plate 2 is overlapped on described bridge abutment 12 are respectively provided with described
Headwall 13, and the headwall 13 of described every side backfills filler 4 with the support rail beam both sides of respective side respectively and abuts, and protects institute for gear
State support rail beam both sides backfill filler 4；
Described trapezoidal filling body 14 is arranged between shallow layer reinforcement district 6 and described armored concrete support rail beam base plate 2, its with
Under described support rail beam, roadbed filling 5 abuts near one end of described bridge abutment 12, holds for accepting described armored concrete
Beam-and-rail base plate 2, support rail beam both sides backfill filler 4 and headwall 13；
Described trapezoidal filling body 14 both sides are provided with second weathering 17 consistent with described first weathering 11 gradient.
Further, described pile foundation carrying structure 3 be cast-in-situ bored pile, reinforced concrete supporting beam and support rail beam base plate just connect or
Overlap joint, just connects with pile foundation carrying structure.Position reinforced concrete supporting beam at support rail beam internode seam uses pin with support rail beam base plate
Nail overlap joint, remaining position uses and just connects.
The height of described support rail beam both sides backfill filler 4 is equal with the height of described armored concrete support rail beam base plate 2, institute
These the described pile foundations carrying structure 3 having is arranged in ranks, and described trapezoidal filling body 14 uses cement stabilized graded macabam to make, described
Armored concrete support rail beam base plate 2 be overlapped on be provided with between one end of described bridge abutment 12 and described bridge abutment 12 wear-resisting
Sliding layer 16.
Described pin 15 includes pre-buried connection reinforcing bar 15.1, Colophonium hemp cut 15.2 and rustless steel sleeve pipe 15.3, described pre-buried
Connect reinforcing bar 15.1 be positioned at described rustless steel sleeve pipe 15.3 and arrange described Colophonium hemp cut 15.2 between the two.
The invention provides medium-and low-speed maglev single line embankment location pile foundation joist type support rail beam transition section structure, can avoid passing
Uniting the low defect putting circuit support rail girder construction, construction quality is easier to control, and long-time stability are more preferable, and it is low in both meeting
Speed magnetic suspension traffic engineering track structure, to the deformation of support rail girder construction and the high request of settlement after construction, meets again bedding steady in a long-term
The requirement of the controllability of property, durability and construction quality, and economy is more preferably.
Armored concrete support rail beam 9 agent structure of the present invention all uses reinforced concrete soil scene one-piece casting, reinforced concrete
Soil support rail beam 9 girder structure is in order to directly take on track load and the magnetic-levitation train load of track transmission, then will conduct oneself with dignity and top
Load passes to pile foundation rigidly connected with it carrying structure 3, and structural reliability is high.Pile foundation carrying structure 3 uses reinforced concrete
Earth boring auger hole pouring pile makes, and transverse direction and longitudinal direction is made up of multiple rows of reinforced concrete bored pile, and vertical cross stiffness is big；And pile foundation
Going deep into reliable supporting course 8, when between the certain sedimentation of embankment generation and armored concrete support rail beam 9, generation is come to nothing, pile foundation carrying is tied
Structure 3 still can bear negative friction and provide stronger bearing capacity, has stronger longitudinal, vertical and lateral stability.
The reinforced concrete supporting beam 90 that pile foundation carrying structure 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；Further, since reinforced concrete supporting beam 90 is horizontal
Interconnection function, too increases lateral stiffness and the ability of opposing differential settlement deformation of structure, can reduce the number of transverse pile foundation
Amount, reduces investment.
Armored concrete support rail beam base plate 2 one end of armored concrete support rail beam 9 is overlapped on bridge abutment 12, and the two leads to
Cross pin 15 to connect, the most releasable temperature stress of pin 15, it is achieved support rail beam stretches longitudinal, laterally limits support rail beam
Displacement, improves the lateral stability of structure.One end of support rail beam overlaps with bridge abutment 12, makes low to put circuit support rail beam and bridge
The sedimentation of abutment 12 lap position is consistent, it is to avoid bridge abutment 12 and low putting produce faulting of slab ends sedimentation between circuit support rail girder construction；Low
Putting circuit armored concrete support rail beam base plate 2 other end to be embedded in and stable low put in line construction, its sedimentation puts circuit with low
Structure is consistent, due to low put line construction through basement process and after filling compacting sedimentation value be in controlled range, therefore, support rail
Sedimentation between beam two ends is at bridge abutment 12 and low puts between line construction, close to linear change, it is achieved thereby that overhead
Bridge structure and the low sedimentation transition put between line construction, it also avoid faulting of slab ends, the smooth-going of changeover portion scope F rail be effectively ensured
Property.
Wear-resisting sliding layer 16 is arranged between armored concrete support rail beam base plate 2 and bridge abutment 12, by resistance to mill sliding
The effect of layer 16, can release the rotation that support rail beam is likely to occur under the load action such as relative settlement, temperature to a certain extent
Retrain, and the dynamic stress that magnetic-levitation train is transferred to bridge abutment 12 plays cushioning effect, it also avoid support rail beam and bridge abutment
Abrasion and stress between 12 are concentrated and are caused the partial pressing of structure to destroy.
Headwall 13 is set by low line side of putting, protects put circuit support rail beam both sides low with bridge abutment 12 joint for gear and return
Filler.Low geotechnique basis of putting under circuit support rail beam is arranged with reference to High-speed Railway Bridges road transition section structure form, and changeover portion is trapezoidal
Filling body 14 uses graded broken stone water mixing mud to fill, and the top layer on trapezoidal filling body 14 top also uses graded broken stone water mixing mud to fill out
Build, meet corresponding compacting requirement and basement process requirement of settlement control simultaneously, set between graded broken stone and bridge abutment 12
Put non-fine concrete loaded filter, drain pipe is set simultaneously water is drawn outside roadbed.
When changeover portion is positioned at soft soil zone, top layer shallow to ground should be needed to carry out necessity add according to embankment stability
Gu, form shallow layer reinforcement district 6.The reinforcement depth in shallow layer reinforcement district 6 is by embankment stability control, and whether it reinforces and reinforcement depth
Should be determined by stability calculation according to embankment raising, foundation condition.Compared to by settling and stablizing biography when Two indices controls
Uniting for single ground reinforcing mode, shallow layer reinforcement district 6 reinforcement depth is little, can effectively control embankment in conjunction with pile foundation carrying structure 3
Stablize and post-construction settlement of subgrade.By contrast, this structural strengthening quantity is little, invests little, and more conducively heavy after construction quality and work
The control of fall, and save cost and reduction of erection time.
The making step that the present invention is concrete is as follows:
(1) construction overhead bridge structure abutment, pours bridge abutment body concrete, abutment of constructing, and backfills abutment foundation foundation ditch；
The location of pin should be performed before abutment concreting and bury work underground；
(2) low after smooth platform put construction site, circuit location, require according to design to carry out at the shallow layer foundation reinforcing of necessity
Reason, after basement process completes, low after filling platform by changeover portion design requirement puts under circuit support rail beam geotechnique basis, platform consequence beam-and-rail
Lower geotechnique basis filling construction Tong Bu with abutment cone.According to each position wire feeding and compaction requirement, changeover portion when filling
Scope is synchronous layered with non-changeover portion district fills, and next layer fills and fills last layer after detection meets the requirements again, until reinforcing bar mixes
At the absolute altitude of solidifying soil support rail beam base plate bottom surface；
(3) it is in embankment subgrade cross section, the perfusion of vertical section direction construction drill at reinforced concrete floor bottom surface absolute altitude
Stake, i.e. pile foundation carrying structure 3, drilled pile construction should use the construction technology little to railway embankment disturbance, if desired at embankment
Steel pile casting is set in the range of filled height or draws hole；After cast-in-situ bored pile reaches desired strength, amputate pile crown by code requirement,
Colligation concrete floor and the connection reinforcing bar with stake；
(4) according to design attitude to reinforced concrete supporting beam 90, convex gear platform 91 formwork erection, one-time-concreting molding, before pouring
Carry out all kinds of built-in fitting such as pin 10 and with pile foundation connect the location of reinforcing bar and installation, concrete is removed after reaching design strength
Template；
(5) laying high-strength wearable sliding layer it is on abutment at armored concrete support rail beam with abutment overlap joint, according to design
Joint is long to armored concrete support rail beam base plate 2 and reinforced concrete beam type structure 1 merogenesis formwork erection, and each parts concrete reaches design
Respectively form removal, one-time-concreting molding after intensity, carry out before pouring all kinds of built-in fitting such as pin, sleeper pedestal connection reinforcing bar,
The location of water conservancy diversion rail bearing built-in fitting etc. and installation；
(6) constructing and low put both sides, circuit bridge abutment 12 joint headwall 13, headwall 13 uses concrete one-piece casting to execute
Work, waits headwall 13 concrete to reach form removal after design strength, then puts circuit graded broken stone top by design requirement construction is low
The backfill layer in face, confining bed, associated satellite structures, by design and construction bridge abutment 12 cone end face confining bed etc., limit of constructing
Slope protection, drainage system etc..
(7) carry out low circuit and the elevated structure section of track put to lay and the installation of associated satellite engineering and construction, construct complete
After.
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 (8)
1. medium-and low-speed maglev single line embankment location pile foundation joist type support rail beam transition section structure, it is characterised in that include that pile foundation is held
Carry roadbed under structure, reinforced concrete supporting beam, armored concrete support rail beam base plate, reinforced concrete beam type structure, support rail beam to fill out
Material, support rail beam both sides backfill filler, bridge abutment, trapezoidal filling body and headwall, 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 molding thus collectively form armored concrete support rail beam；
Described reinforced concrete supporting beam both sides are provided with for limiting the convex of described armored concrete support rail beam base plate lateral displacement
Type gear platform；
Under described support rail beam, roadbed filling is arranged between shallow layer reinforcement district and described armored concrete support rail beam base plate, for
There is provided operation platform for described armored concrete support rail beam base plate, reinforced beam and support rail beam both sides backfill filler, and be
Described pile foundation carrying structure provides lateral support；Wherein, described shallow layer reinforcement district is arranged on the shallow top layer of soft stratum, and institute
State roadbed filling and the vertical consistency of described reinforced concrete beam type structure under shallow layer reinforcement district, described support rail beam；
Described support rail beam both sides backfill filler is accepted by roadbed filling under described support rail beam, and the backfill of described support rail beam both sides
Filler props up the both sides of described armored concrete support rail beam base plate, to shield described armored concrete support rail beam base plate
And retrain the transverse shifting of described armored concrete support rail beam base plate, and provide maintenance passage；
Under described support rail beam, roadbed filling and described support rail beam both sides backfill filler collectively form filler filling body, and described filler is filled out
Building body both sides are provided with the first weathering；
The lower end of every described pile foundation carrying structure sequentially passes through roadbed filling under described support rail beam, described shallow layer reinforcement district and institute
Stretching into after stating soft stratum in supporting course, with when soft stratum produces sedimentation, described pile foundation carrying structure can bear negative frictional resistance
Power, thus provide stable bearing capacity to armored concrete support rail beam base plate and reinforced concrete beam type structure, to reduce because filling out
The adverse effect that vertical, the vertical and horizontal rigidity of armored concrete support rail beam are produced by the sedimentation of material filling body；
One end of described armored concrete support rail beam base plate is overlapped on described bridge abutment, and both are released by pin connection
Put longitudinal restraint, and limit lateral displacement；
The both sides of one end that described armored concrete support rail beam base plate is overlapped on described bridge abutment are respectively provided with described headwall, and
And the headwall of described every side backfills filler with the support rail beam both sides of respective side respectively and abuts, protect described support rail beam both sides for gear
Backfill filler；
Described trapezoidal filling body is arranged between shallow layer reinforcement district and described armored concrete support rail beam base plate, itself and described support rail
Under beam, roadbed filling abuts near one end of described bridge abutment, for accepting described armored concrete support rail beam base plate, holding
Beam-and-rail both sides backfill filler and headwall；
Described trapezoidal filling body both sides are provided with second weathering consistent with the described first weathering gradient.
Medium-and low-speed maglev single line embankment location the most according to claim 1 pile foundation joist type support rail beam transition section structure, its
Being characterised by, 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, with
Pile foundation carrying structure just connects.
Medium-and low-speed maglev single line embankment location the most according to claim 1 pile foundation joist type support rail beam transition section structure, its
Being characterised by, position reinforced concrete supporting beam and support rail beam base plate at support rail beam internode seam use pin overlap joint, remaining position
Just connect.
Medium-and low-speed maglev single line embankment location the most according to claim 1 pile foundation joist type support rail beam transition section structure, its
Being characterised by, the height of described support rail beam both sides backfill filler is equal with the height of described armored concrete support rail beam base plate.
Medium-and low-speed maglev single line embankment location the most according to claim 1 pile foundation joist type support rail beam transition section structure, its
Being characterised by, pile foundation carrying structure described in all these is ranks arrangements.
Medium-and low-speed maglev single line embankment location the most according to claim 1 pile foundation joist type support rail beam transition section structure, its
Being characterised by, described trapezoidal filling body uses graded broken stone to mix cement production systD.
Medium-and low-speed maglev single line embankment location the most according to claim 1 pile foundation joist type support rail beam transition section structure, its
Being characterised by, described armored concrete support rail beam base plate is overlapped between one end of described bridge abutment and described bridge abutment and sets
It is equipped with wear-resisting sliding layer.
Medium-and low-speed maglev single line embankment location the most according to claim 1 pile foundation joist type support rail beam transition section structure, its
Being characterised by, 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 institute
State in rustless steel sleeve pipe and described Colophonium hemp cut is set between the two.
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| CN106283951B (en) | 2017-11-14 |
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