CN106283950A - Medium-and low-speed maglev traffic engineering two-wire embankment location pile foundation joist type support rail beam transition section structure - Google Patents

Medium-and low-speed maglev traffic engineering two-wire embankment location pile foundation joist type support rail beam transition section structure Download PDF

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Publication number
CN106283950A
CN106283950A CN201610826057.6A CN201610826057A CN106283950A CN 106283950 A CN106283950 A CN 106283950A CN 201610826057 A CN201610826057 A CN 201610826057A CN 106283950 A CN106283950 A CN 106283950A
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China
Prior art keywords
support rail
rail beam
pile foundation
base plate
armored concrete
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Granted
Application number
CN201610826057.6A
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Chinese (zh)
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CN106283950B (en
Inventor
郭建湖
李小和
赵新益
姜鹰
姚洪锡
李巍
王勇刚
杨辉建
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China Railway Siyuan Survey and Design Group Co Ltd
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China Railway Siyuan Survey and Design Group Co Ltd
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Priority to CN201610826057.6A priority Critical patent/CN106283950B/en
Publication of CN106283950A publication Critical patent/CN106283950A/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2/00General structure of permanent way
    • E01B2/006Deep foundation of tracks
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B1/00Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B1/00Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
    • E01B1/008Drainage of track
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B25/00Tracks for special kinds of railways
    • E01B25/30Tracks for magnetic suspension or levitation vehicles
    • E01B25/305Rails or supporting constructions
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/10Deep foundations
    • E02D27/12Pile foundations
    • E02D27/14Pile framings, i.e. piles assembled to form the substructure
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/34Foundations for sinking or earthquake territories
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2204/00Characteristics of the track and its foundations
    • E01B2204/07Drainage
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2204/00Characteristics of the track and its foundations
    • E01B2204/08Deep or vertical foundation
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2204/00Characteristics of the track and its foundations
    • E01B2204/09Ballastless 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 traffic engineering two-wire 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, two placing of reinforcement concrete beam-type structures, 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 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

Medium-and low-speed maglev traffic engineering two-wire embankment location pile foundation joist type support rail beam changeover portion Structure
Technical field
The invention belongs to that middle low speed magnetic suspension traffic engineering is low puts Line technology field, more particularly, to middle low speed magnetic Floating traffic engineering 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 traffic engineering two-wire and fill out Side's location pile foundation joist type support rail beam transition section structure, had both met elevated structure and the low rigidity put between circuit and had settled Cross, it is ensured that magnetic suspension traffic engineering elevated structure and the low ride comfort requirement putting line transition section F rail, meet again magnetic floating traffic work Journey is low puts 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 traffic engineering two-wire embankment location pile foundation torr Beam type support rail beam transition section structure, it is characterised in that include that pile foundation carrying structure, reinforced concrete supporting beam, armored concrete hold Roadbed filling under beam-and-rail base plate, two placing of reinforcement concrete beam-type structures, support rail beam, 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 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;
The top of described pile foundation carrying structure embeds described reinforced concrete supporting beam and just connects with it, described armored concrete torr Beam has just connect with described armored concrete support rail beam base plate or has overlapped, described armored concrete support rail beam base plate and described reinforced concrete Soil girder structure formed by integrally casting molding thus collectively form armored concrete support rail beam;
Described reinforced concrete supporting beam both sides are provided with for limiting described armored concrete support rail beam base plate lateral displacement Convex gear platform;
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 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 gear Wall, and the barricade 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 barricade;
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.Using pin overlap joint in the position of support rail beam internode seam, 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, between described line, the cross fall of weathering section is 3%~5%, and head fall is not less than 2 ‰.
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 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 that causes because filling compaction quality is wayward is uneven heavy The fall impact on support rail beam vertical and horizontal rigidity, structure vertical cross stiffness is 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) 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, reduces the differential settlement between gauge, is also beneficial to the maintenance during operation and maintenance, measure letter Single, easily construction, cost save, effective.
(5) 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.
(6) 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 traffic engineering two-wire embankment location pile foundation joist type support rail beam changeover portion is tied Structure, mixes base plate 2, two placing of reinforcement concrete beam-type structure 1 including pile foundation carrying structure 3, reinforced concrete supporting beam 90, reinforcing bar, holds Roadbed filling 5, support rail beam both sides backfill filler 4, bridge abutment 12, trapezoidal filling body 14 and headwall 13 under beam-and-rail, 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 reinforced concrete floor 2;
Described reinforced concrete beam type structure 1 is accepted on the top of described reinforced concrete floor 2;
The top of described pile foundation carrying structure 3 embeds described reinforced concrete supporting beam 90 and just connects with it, described reinforced concrete Soil joist 90 has just connect with described reinforced concrete floor 2 or has overlapped, described reinforced concrete floor 2 and described reinforced beam Formula structure 1 formed by integrally casting molding thus collectively form armored concrete support rail beam 9;
It is provided with on described reinforced concrete supporting beam 90 for limiting the described horizontal position of armored concrete support rail beam 9 base plate 2 The convex gear platform 91 moved;
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 is arranged between shallow layer reinforcement district 6 and described reinforced concrete floor 2, with In providing construction flat for described armored concrete support rail beam base plate 2, reinforced concrete supporting beam 90 and support rail beam both sides backfill filler 4 Platform, and provide lateral support for described pile foundation carrying structure 3;Wherein, described shallow layer reinforcement district 6 is arranged on the shallow of soft stratum 7 Roadbed filling 5 and the longitudinal direction of described reinforced concrete beam type structure 1 under top layer, and described shallow layer reinforcement district 6, described support rail beam Unanimously;
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 filler filling body 10 both sides and 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 bearing capacity to reinforced concrete floor 2 and reinforced concrete beam type structure 1, with fall The low adverse effect vertical, the vertical and horizontal rigidity of armored concrete support rail beam 9 produced because of the sedimentation of filler filling body 10;
One end of described reinforced concrete floor 2 is overlapped on described bridge abutment 12, and both are by pin 15 even Connect release longitudinal restraint, and limit lateral displacement;
The both sides of one end that described reinforced concrete floor 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 abut, for gear protect described in hold Beam-and-rail both sides backfill filler 4;
Described trapezoidal filling body 14 is arranged between shallow layer reinforcement district 6 and described reinforced concrete floor 2, and it holds with described Under beam-and-rail, roadbed filling 5 abuts near one end of described bridge abutment 12, for accepting described reinforced concrete floor 2, holding Beam-and-rail 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 is cast-in-situ bored pile, reinforced concrete supporting beam 90 and reinforced concrete floor 2 have just connect or have overlapped, and just connect with pile foundation carrying structure 3.Using pin 15 to overlap in the position of support rail beam internode seam, remaining position is adopted With just connecing.
The height of described support rail beam both sides backfill filler 4 is equal with the height of described armored concrete support rail beam 9 base plate 2, Described in all these, pile foundation carrying structure 3 is arranged in ranks.
Further, described trapezoidal filling body 14 uses cement stabilized graded macabam to make, and described reinforced concrete floor 2 is overlapped on Being provided with wear-resisting sliding layer 16 between one end and the described bridge abutment 12 of described bridge abutment 12, described pin 15 includes pre-buried Connecting reinforcing bar 15.1, Colophonium hemp cut 15.2 and rustless steel sleeve pipe 15.3, described pre-buried connection reinforcing bar 15.1 is positioned at described rustless steel Sleeve pipe 15.3 is interior and arranges 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.
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 of the present invention 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 Difference form removal after intensity, intilted weathering is made and by design requirement in the face that backfills between reinforced concrete beam type structure Carry out top layer waterproof, one-time-concreting molding, carry out all kinds of built-in fitting such as pin, sleeper pedestal connection reinforcing bar, water conservancy diversion rail before pouring The location of 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 (9)

1. medium-and low-speed maglev traffic engineering two-wire embankment location pile foundation joist type support rail beam transition section structure, it is characterised in that bag Include pile foundation carrying structure, reinforced concrete supporting beam, armored concrete support rail beam base plate, two placing of reinforcement concrete beam-type structures, hold Roadbed filling, support rail beam both sides backfill filler, bridge abutment, trapezoidal filling body and headwall under beam-and-rail, wherein,
Described pile foundation carrying structure is provided with many, and every described pile foundation carrying structure is all vertically arranged, and every described stake Described reinforced concrete supporting beam is all accepted on the top of base carrying structure;
Described reinforced concrete supporting beam accepts described armored concrete support rail beam base plate;
Described reinforced concrete beam type structure is accepted on the top of described armored concrete support rail beam base plate;
Described pile foundation carrying structure top embed described reinforced concrete supporting beam just connect with it, described reinforced concrete supporting beam and Described armored concrete support rail beam base plate has just connect or has overlapped, described armored concrete support rail beam base plate and described reinforced beam Formula structural integrity pours molding thus collectively forms armored concrete support rail beam;
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 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 barricade, and And the barricade 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 barricade;
Described trapezoidal filling body both sides are provided with second weathering consistent with the described first weathering gradient.
Medium-and low-speed maglev traffic engineering two-wire embankment location the most according to claim 1 pile foundation joist type support rail beam changeover portion Structure, it is characterised in that 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.
Medium-and low-speed maglev traffic engineering two-wire embankment location the most according to claim 1 pile foundation joist type support rail girder construction, It is characterized in that, position reinforced concrete supporting beam and support rail beam base plate at support rail beam internode seam use pin overlap joint, remaining position Put employing just to connect.
Medium-and low-speed maglev traffic engineering two-wire embankment location the most according to claim 1 pile foundation drags joist type support rail beam transition Segment structure, it is characterised in that the height of described support rail beam both sides backfill filler and the height of described armored concrete support rail beam base plate Spend equal.
Medium-and low-speed maglev traffic engineering two-wire embankment location the most according to claim 1 pile foundation drags joist type support rail beam transition Segment structure, it is characterised in that pile foundation carrying structure described in all these is ranks arrangements.
Medium-and low-speed maglev traffic engineering two-wire embankment location the most according to claim 1 pile foundation drags joist type support rail beam transition Segment structure, it is characterised in that between described line, the cross fall of weathering section is 3%~5%, head fall is not less than 2 ‰.
Medium-and low-speed maglev two-wire 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 two-wire 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 two-wire 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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