CN106283953A - Medium-and low-speed maglev two-wire embankment location pile foundation combined type support rail beam transition section structure - Google Patents
Medium-and low-speed maglev two-wire embankment location pile foundation combined type support rail beam transition section structure Download PDFInfo
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- CN106283953A CN106283953A CN201610826167.2A CN201610826167A CN106283953A CN 106283953 A CN106283953 A CN 106283953A CN 201610826167 A CN201610826167 A CN 201610826167A CN 106283953 A CN106283953 A CN 106283953A
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- rail beam
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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
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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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
- 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
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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 two-wire embankment location pile foundation combined type support rail beam transition section structure, including roadbed filling, support rail beam both sides backfill filler, bridge abutment, trapezoidal filling body and headwall under the first pile foundation carrying structure, pile foundation joist composite bearing structure, armored concrete support rail beam base plate, two placing of reinforcement concrete beam-type structures, support rail beam, the first pile foundation carrying structure is provided with many；Described reinforced concrete beam type structure is accepted on the top of armored concrete support rail beam base plate；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 two-wire embankment location support rail beam 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 two-wire embankment location multiple
Box-like support rail beam transition section structure, this structure should meet elevated structure and the low rigidity put between circuit and sedimentation transition, protect
Card magnetic suspension traffic engineering elevated structure and the low ride comfort requirement putting line transition section F rail, meet magnetic floating traffic engineering again
Low put the intensity of line transition section sub rail foundation, long-time stability requirement, and construction quality controllability is strong.
For achieving the above object, it is proposed, according to the invention, provide medium-and low-speed maglev two-wire embankment ground stage composite support rail beam mistake
Cross segment structure, it is characterised in that include the first pile foundation carrying structure, pile foundation joist composite bearing structure, armored concrete support rail
Roadbed filling, the backfill of support rail beam both sides filler, bridge abutment, ladder under beam base plate, two placing of reinforcement concrete beam-type structures, support rail beam
Shape filling body and headwall, wherein,
Described first pile foundation carrying structure and described pile foundation joist composite bearing structure accept described armored concrete jointly
Support rail beam base plate；
Described first pile foundation carrying structure is provided with many, and every described first pile foundation carrying structure is all vertically arranged, and
And every described first pile foundation carrying structure top all accept described armored concrete support rail beam base plate, described first pile foundation is held
The top described armored concrete support rail beam base plate of embedding carrying structure just connects with it；
Reinforced concrete beam type structure described in two rows is accepted at the top of described armored concrete support rail beam base plate, and adjacent
Two save reserved expansion joint between described armored concrete support rail beam base plate；
Described pile foundation joist composite bearing structure is provided with multiple, and the two adjacent described armored concrete support rail beams of joint
Pile foundation joist composite bearing structure described in one it is respectively provided with, for supporting these two blocks of adjacent described reinforcing bars at the expansion joint of base plate
Concrete support rail beam base plate, each described pile foundation joist composite bearing structure all includes that reinforced concrete supporting beam and the second pile foundation are held
Carrying structure, and described reinforced concrete supporting beam is all accepted on the top of every described second pile foundation carrying structure, described reinforcing bar mixes
Solidifying soil joist accepts described armored concrete support rail beam base plate；
The top of described second pile foundation carrying structure embeds described reinforced concrete supporting beam and just connects with it, described reinforced concrete
Soil joist 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 reinforcing bar
Concrete beam-type structural integrity pours molding thus collectively forms 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 reinforced concrete beam type structure, and described first are accepted in the top of described armored concrete support rail beam base plate
The top of pile foundation carrying structure embeds described armored concrete support rail beam base plate and just connects with it, at the bottom of described armored concrete support rail beam
Plate and described reinforced concrete beam type structural integrity pour molding thus collectively form armored concrete support rail beam；
Arranging wired weathering section described in two rows between reinforced concrete beam type structure, between described line, weathering section has
Cross fall and head fall, for current are introduced two adjacent sections armored concrete support rail beam base plate internode expansion joint and then
Current are discharged；
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 construction flat for described armored concrete support rail beam base plate, reinforced concrete supporting beam and support rail beam both sides backfill filler
Platform, and provide lateral support for described pile foundation carrying structure；Wherein, described shallow layer reinforcement district is arranged on the shallow table of soft stratum
Layer, 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 first pile foundation carrying structure sequentially passes through roadbed filling, described shallow-layer under described support rail beam and adds
Stretching in supporting course after Gu Qu and described soft stratum, with when soft stratum produces sedimentation, described first pile foundation carries structure
Can bear negative friction, thus provide stable carrying to armored concrete support rail beam base plate and reinforced concrete beam type structure
Power, with reduce because of the sedimentation of filler filling body vertical, the vertical and horizontal rigidity of armored concrete support rail beam is produced unfavorable
Impact；
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 first 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.Position joist at support rail beam internode seam uses pin overlap joint with support rail beam base plate, and remaining position is adopted
With just connecing.
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, described in all these, the first pile foundation carrying structure is ranks arrangements.
Preferably, described trapezoidal filling body uses graded broken stone 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 is fixedly installed described Colophonium hemp cut between the two.
Preferably, between described line, the cross fall of weathering section is 3%～5%, and head fall is not less than 2 ‰.
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 first pile foundation carrying structure rigidly connected with it, structural reliability is high.
(2) the first pile foundation carrying structure of the present invention is goed deep in supporting course, and embankment produces when necessarily settling, and the first pile foundation is held
Carry structure still to bear negative friction and stronger bearing capacity is provided, it is to avoid cause because filling compaction quality is wayward
Settling, the impact of vertical and horizontal rigidity vertical on support rail beam, 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, in conjunction with first pile foundation carrying structure can effectively control roadbed reclamation and
Post-construction settlement of subgrade.Non-soft soil zone more can avoid embankment to put at the foundation stabilization of the wide area produced behind slope
Reason, and the first pile foundation carrying structure construction quality is more easy to control, can effectively control construction quality, investment reduction, reduction of erection time, tool
There are obvious 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.
(5) two placing of reinforcement concrete beam-type structures of two-wire are combined by reinforced concrete floor simultaneously, can
To be effectively increased the lateral stiffness of reinforced concrete beam type structure, left and right two joint reinforced concrete beam type structure is made to be placed in rigidity phase
On same reinforced concrete floor, the lateral stability of reinforced concrete beam type structure can be effectively increased, control reinforced concrete
Relative settlement between soil girder structure, is also beneficial to the maintenance during operation and maintenance, and measure construction simple, easy, cost save, effect
The best.
(6) adjacent armored concrete support rail beam base plate shares pile foundation joist composite bearing structure, and at adjacent steel
Reserved expansion joint between reinforced concrete support rail beam base plate, can avoid the section of encorbelmenting by the impact failure of train load, and reduce temperature
Stress and the impact of shrinkage and creep.
(7) 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 joist of the present invention has just connect connection diagram with armored concrete support rail beam base plate.
Fig. 7 is that pile foundation joist 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 two-wire embankment ground stage composite support rail beam transition section structure, including first
Roadbed filling 5 and support rail under base carrying structure 3, armored concrete support rail beam base plate 2, reinforced concrete beam type structure 1, support rail beam
Beam both sides backfill filler 4, wherein,
Described first pile foundation carrying structure 3 and described pile foundation 901 joist composite bearing structure 90 accept described reinforcing bar jointly
Concrete support rail beam base plate 2；
Described first pile foundation carrying structure 3 is provided with many, and every described first pile foundation carrying structure 3 is all vertically arranged,
And described armored concrete support rail beam base plate 2 is all accepted on the top of every described first pile foundation carrying structure 3, described first
The top of base carrying structure 3 embeds described armored concrete support rail beam base plate 2 and just connects with it；
Reinforced concrete beam type structure 1 described in two rows, and phase are accepted in the top of described armored concrete support rail beam base plate 2
Adjacent two save reserved expansion joint between described armored concrete support rail beam base plate 2；
Described pile foundation 901 joist composite bearing structure 90 is provided with the two multiple and adjacent described armored concrete of joint
Being respectively provided with pile foundation 901 joist composite bearing structure 90 described at the expansion joint of support rail beam base plate 2, for supporting, this is adjacent
Two save described armored concrete support rail beam base plate 2, and each described pile foundation 901 joist composite bearing structure 90 all includes reinforced concrete
Soil joist 901 and the second pile foundation carry structure 902, and institute is all accepted on the top of every described second pile foundation carrying structure 902
Stating reinforced concrete supporting beam 901, described reinforced concrete supporting beam 901 accepts described armored concrete support rail beam base plate 2；
The top of described second pile foundation carrying structure 902 embeds described reinforced concrete supporting beam 901 and just connects with it, described steel
Reinforced concrete joist 901 has just connect with described armored concrete support rail beam base plate 2 or has overlapped, described armored concrete support rail beam base plate
2 with described reinforced concrete beam type structure 1 formed by integrally casting molding thus collectively form armored concrete support rail beam 9；
Described reinforced concrete supporting beam 901 both sides are provided with for limiting described armored concrete support rail beam base plate 2 horizontal
The convex gear platform of displacement；
Wired weathering section is set between reinforced concrete beam type structure 1 described in two rows, weathering section tool between described line
There are cross fall and head fall, for current being introduced two adjacent sections armored concrete support rail beam base plate 2 internode expansion joint
And then current are discharged；Between described line, the cross fall of weathering section is 3%～5%, more preferably 4%, and weathering section between line
Head fall not less than 2 ‰, in order to draining.
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, carry for for described armored concrete support rail beam base plate 2, reinforced concrete supporting beam 90 and support rail beam both sides backfill filler 4
For operation platform, and provide lateral support for described pile foundation carrying structure 3；Wherein, described shallow layer reinforcement district 6 is arranged on flabbily
The shallow top layer of layer 7, and roadbed filling 5 and described reinforced concrete beam type structure under described shallow layer reinforcement district 6, described support rail beam
The vertical consistency of 1；
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 5 and described support rail beam both sides backfill filler 4 collectively form filler filling body 10, institute
State filler filling body 10 both sides and be provided with the first weathering 11；
The lower end of every described first pile foundation carrying structure 3 sequentially passes through roadbed filling 5, described shallow-layer under described support rail beam
Stretching into behind stabilization zone 6 and described soft stratum 7 in supporting course 8, with when soft stratum 7 produces sedimentation, described first pile foundation is held
Carry structure 3 and can bear negative friction, thus provide steady to armored concrete support rail beam base plate 2 and reinforced concrete beam type structure 1
Fixed bearing capacity, to reduce the sedimentation vertical, the vertical and horizontal rigidity to armored concrete support rail beam 9 because of filler filling body 10
The adverse effect produced；
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 first pile foundation carrying structure 3 is cast-in-situ bored pile, and joist 90 has just connect with support rail beam 9 base plate 2 or taken
Connect, just connect with pile foundation carrying structure 3.Using pin 15 to overlap in the position of support rail beam internode seam, 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 first pile foundation carrying structures 3 having are arranged in ranks.
Further, described trapezoidal filling body 14 uses graded broken stone to mix cement production systD, at the bottom of described armored concrete support rail beam
Plate 2 is overlapped between one end of described bridge abutment 12 and described bridge abutment 12 and is provided with wear-resisting sliding layer 16, described pin
15 include that pre-buried connection reinforcing bar 15.1, Colophonium hemp cut 15.2 and rustless steel sleeve pipe 15.3, described pre-buried connection reinforcing bar 15.1 are positioned at
Described rustless steel sleeve pipe 15.3 is interior and is fixedly installed described Colophonium hemp cut 15.2 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, the engineering taking traditional foundation stabilization measure to cause is huge, it is big, long in time limit to invest, and basement process and embankment
Construction quality is wayward, bedding long-time stability and the problem of poor durability, thus improves low circuit support rail girder construction of putting
Reliability, reduces the engineering risk of traditional structure pattern.
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.Two lines
Reinforced concrete beam type structure is connected by shared base plate, further increases lateral stiffness and the stability of structure.
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.
Adjacent armored concrete support rail beam base plate 2 shares pile foundation joist composite bearing structure, and at adjacent reinforcing bar
Reserved expansion joint between concrete support rail beam base plate 2, can avoid the section of encorbelmenting by the impact failure of train load, and reduce temperature should
Power and the impact of shrinkage and creep.
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；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.
Low when putting circuit by 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 its reinforcement depth should be according to embankment
Raising, foundation condition are determined by stability calculation.Compared to by settling and stablizing the single ground of tradition when Two indices controls
For reinforcing mode, shallow layer reinforcement district 6 reinforcement depth is little, in conjunction with first pile foundation carrying structure 3 can effectively control roadbed reclamation and
Post-construction settlement of subgrade.By contrast, this new structure foundation stabilization quantity is little, invests little, and more conducively after construction quality and work
The control of sedimentation, 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, the i.e. first pile foundation carrying structure 3, drilled pile construction should use the construction technology little to railway embankment disturbance, exist if desired
Steel pile casting is set in embankment altitude range or draws hole；After cast-in-situ bored pile reaches desired strength, amputate by code requirement
Pile crown, 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
Difference form removal after intensity, the face that backfills between reinforced concrete beam type structure is made intilted transverse drainage slope and longitudinally arranges
Water slope to carry out top layer waterproof by design requirement, one-time-concreting molding, carries out all kinds of built-in fitting such as pin, sleeper pedestal before pouring
Connect location and the installation of reinforcing bar, water conservancy diversion rail bearing built-in fitting etc.；
(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 (9)
1. medium-and low-speed maglev two-wire embankment location pile foundation combined type support rail beam transition section structure, it is characterised in that include first
Base carrying structure, pile foundation joist composite bearing structure, armored concrete support rail beam base plate, two placing of reinforcement concrete beam-type structures,
Roadbed filling, support rail beam both sides backfill filler, bridge abutment, trapezoidal filling body and headwall under support rail beam, wherein,
Described first pile foundation carrying structure and described pile foundation joist composite bearing structure accept described armored concrete support rail jointly
Beam base plate；
Described first pile foundation carrying structure is provided with many, and every described first pile foundation carrying structure is all vertically arranged, and often
Described armored concrete support rail beam base plate, described first pile foundation carrying knot are all accepted in the top of the first pile foundation carrying structure described in root
The top of structure embeds described armored concrete support rail beam base plate and just connects with it；
Reinforced concrete beam type structure described in two rows, and two adjacent sections are accepted in the top of described armored concrete support rail beam base plate
Between described armored concrete support rail beam base plate, expansion joint is set；
Described pile foundation joist composite bearing structure is provided with multiple, and two pieces of adjacent described armored concrete support rail beam base plates
Expansion joint at be respectively provided with pile foundation joist composite bearing structure described in, for supporting this adjacent two described reinforced concretes of joint
Soil support rail beam base plate, each described pile foundation joist composite bearing structure all includes reinforced concrete supporting beam and the second pile foundation carrying knot
Structure, and every described second pile foundation carrying structure top all accept described reinforced concrete supporting beam, described armored concrete
Joist accepts described armored concrete support rail beam base plate；
The top of described second 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 the convex of described armored concrete support rail beam base plate lateral displacement
Type gear platform；
Arranging wired weathering section described in two rows between reinforced concrete beam type structure, between described line, weathering section has laterally
The gradient and head fall, for current introducing two adjacent sections armored concrete support rail beam base plate internode expansion joint and then by water
Stream is discharged；
Under described support rail beam, roadbed filling is arranged between shallow layer reinforcement district and described armored concrete support rail beam base plate, for
Operation platform is provided for described armored concrete support rail beam base plate, reinforced concrete supporting beam and support rail beam both sides backfill filler, and
Lateral support is provided for described pile foundation carrying structure；Wherein, described shallow layer reinforcement district is arranged on the shallow top layer of soft stratum, 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 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 first 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 first pile foundation carrying structure can be held
By negative friction, thus provide stable bearing capacity to armored concrete support rail beam base plate and reinforced concrete beam type structure, with
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 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 two-wire embankment location the most according to claim 1 pile foundation combined type support rail beam transition section structure, its
Being characterised by, described first pile foundation carrying structure is cast-in-situ bored pile, and joist has just connect with support rail beam base plate or overlapped, and holds with pile foundation
Carry structure just to connect.
Medium-and low-speed maglev single line embankment location the most according to claim 1 pile foundation combined type support rail beam transition section structure, its
Being characterised by, position joist and support rail beam base plate at support rail beam internode seam use pin overlap joint, and remaining position uses and just connects.
Medium-and low-speed maglev two-wire embankment location the most according to claim 1 pile foundation combined 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 two-wire embankment location the most according to claim 1 pile foundation combined type support rail beam transition section structure, its
Being characterised by, described in all these, the first pile foundation carrying structure is ranks arrangements.
Medium-and low-speed maglev two-wire embankment location the most according to claim 1 pile foundation combined 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 two-wire embankment location the most according to claim 1 pile foundation combined 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 two-wire embankment location the most according to claim 1 pile foundation combined 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.
Medium-and low-speed maglev traffic engineering two-wire embankment location the most according to claim 1 detached pier pillar support rail girder construction,
It is characterized in that, between described line, the cross fall of weathering section is 3%～5%, and head fall is not less than 2 ‰.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114134794A (en) * | 2021-12-13 | 2022-03-04 | 交通运输部公路科学研究所 | Abutment way back end base reinforcing column fishplate bar structure |
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