CN206127740U - Moderate -low speed magnetic levitation single line location supporting beam of pile foundation formula support rail roof beam transition section structure that fills - Google Patents

Abstract

The utility model belongs to the technical field of the low circuit of putting of well low -speed maglev traffic engineering to moderate -low speed magnetic levitation single line location supporting beam of pile foundation formula support rail roof beam transition section structure that fills is disclosed, filler, bridge abutment, trapezoidal filling body and headwall are backfilled to roadbed filler and support rail roof beam both sides under pile foundation load bearing structure, reinforced concrete joist, reinforced concrete support rail breast board, reinforced concrete beam structure, support rail roof beam, pile foundation load bearing structure is provided with many, accept on the top of reinforced concrete support rail breast board reinforced concrete beam structure, support rail roof beam both sides are backfilled to pack and are passed through roadbed filler accepts under the support rail roof beam. The utility model discloses long term stability is better, has both satisfied the high requirement to support rail roof beam structural distortion and post -construction settlement, satisfies the requirement of foundation bed long term stability, durability and construction quality's controllability again, effectively realizes magnetic suspension elevated structure and low smooth -going transition of putting circuit changeover portion F rail.

Description

Medium-and low-speed maglev single line embankment location pile foundation joist type support rail beam transition section structure

Technical field

This utility model belongs to that middle low speed magnetic suspension traffic engineering is low to put Line technology field, low more particularly, in Fast magnetic floats single line embankment location transition section structure pattern.

Background technology

Middle low speed magnetic suspension track traffic belongs to a kind of novel traffic mode, and achievement in research both domestic and external is less, the whole world The circuit for opening operation is even more minority.The middle low speed magnetic suspension railway business that only in March, 2005 Japan's construction at present is opened is transported The middle low speed magnetic suspension railway business operating line that line-the East Hillside Line and in June, 2014 Korea open.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 based on elevated structure, it is rarely seen about elevated structure and the low research put in terms of line transition segment structure and Using.

In wheel rail high speed railway, there is substantial amounts of bridge changeover portion roadbed, high-speed railway changeover portion roadbed is adopted mostly Trapezium structure, employs cement stabilized graded macabam and fills in trapezoidal scope, and employs the compacting higher than non-changeover portion roadbed Require.During built high-speed railway operation, often there is non-fragment orbit protuberance, gap, grout in bridge transition segment limit Etc. disease.The reason for this disease, be mostly because changeover portion roadbed is remained by the earth structure of rock and soil constitution, changeover portion After roadbed is laid a railway track, certain sedimentation still can occur, there is poor (the specification permission settlement after construction of certain settlement after construction with bridge abutment Difference is not more than 5mm), because high-speed railway adopts seamless track steel rail, allow in settlement after construction difference scope, to have no effect in specification Normal operation, but the diseases such as non-fragment orbit protuberance, gap, grout can be caused, need timely repair and maintenance.

The F rails of medium-and low-speed maglev traffic line are spliced using fishplate bar scene by a short rail successively, and are left between rail Seam, meets the ride comfort of the F rails of magnetic-levitation train even running requirement, to lean on works under rail to ensure substantially.It is low to put circuit location, Basis is, by the earth structure of rock and soil constitution, to be affected by factors such as landform, geological conditions under support rail beam, and quality is not relatively easily-controllable System, under load and the effect of various factor of natural environments differential settlement is also easy to produce, and can be occurred unavoidably and elevated structure bridge bridge The inconsistent settlement after construction of platform, generation settlement after construction is poor, and low circuit of putting occurs in that differential settlement with bridge abutment position, necessarily affects The ride comfort of F rails, in some instances it may even be possible to cause F rails to produce the problems such as faulting of slab ends, deformation, when serious, will affect the normal fortune of maglev vehicle Battalion.

Utility model content

For the disadvantages described above or Improvement requirement of prior art, this utility model provides medium-and low-speed maglev single line embankment ground Section pile foundation joist type support rail beam transition section structure, can avoid the low defect for putting circuit support rail girder construction of tradition, construction quality from more holding Easy to control, long-time stability are more preferable, and low speed magnetic suspension traffic engineering track structure becomes to support rail girder construction during it both meets The high request of shape and settlement after construction, meets the requirement of the controllability of bedding long-time stability, durability and construction quality, and Jing again Ji property is more preferably.

For achieving the above object, this utility model provides medium-and low-speed maglev single line embankment location pile foundation joist type support rail beam Transition section structure, it is characterised in that including pile foundation bearing structure, reinforced concrete supporting beam, armored concrete support rail beam base plate, steel Roadbed filling and support rail beam both sides backfill filler, bridge abutment, trapezoidal filling body and end under reinforced concrete beam type structure, support rail beam Wall, wherein,

The pile foundation bearing structure is provided with many, is vertically arranged per pile foundation bearing structure described in root, and the institute per root Accept the reinforced concrete supporting beam in the top for stating pile foundation bearing structure；

The reinforced concrete supporting beam accepts the armored concrete support rail beam base plate；

Accept the reinforced concrete beam type structure in the top of the armored concrete support rail beam base plate；

The top of the pile foundation bearing structure is embedded in the reinforced concrete supporting beam and just connects with it, and in across place pile foundation carry The top of structure should still be embedded in the armored concrete support rail beam base plate and just connect with it in addition to the reinforced concrete supporting beam is embedded in, The armored concrete support rail beam base plate and reinforced concrete beam type structural integrity molding are so as to collectively forming reinforced concrete Tu Chengguiliang；

The reinforced concrete supporting beam both sides are provided with for limiting the armored concrete support rail beam base plate lateral displacement Convex gear platform；

Roadbed filling is arranged between shallow layer reinforcement area and the armored concrete support rail beam base plate under the support rail beam, with For providing operation platform for the armored concrete support rail beam base plate, reinforced beam and support rail beam both sides backfill filler, And provide lateral support for the pile foundation bearing structure；Wherein, the shallow layer reinforcement area is arranged on the superficial floor of soft stratum, and And under the shallow layer reinforcement area, the support rail beam roadbed filling and the reinforced concrete beam type structure vertical consistency；

The support rail beam both sides backfill filler is accepted by roadbed filling under the support rail beam, and the support rail beam both sides Backfill filler props up the both sides of the armored concrete support rail beam base plate, to play protection to the armored concrete support rail beam base plate Act on and constrain the transverse shifting of the armored concrete support rail beam base plate, and maintenance passage is provided；

Roadbed filling and support rail beam both sides backfill filler collectively form filler filling body under the support rail beam, described to fill out Material filling body both sides are provided with the first weathering；

Roadbed filling under the support rail beam, the shallow layer reinforcement area are sequentially passed through per the lower end of pile foundation bearing structure described in root With stretch into after the soft stratum in supporting course, with soft stratum produce sedimentation when, the pile foundation bearing structure can bear negative Frictional resistance, so as to provide stable bearing capacity to armored concrete support rail beam base plate and reinforced concrete beam type structure, to reduce Because of the adverse effect that the sedimentation of filler filling body is produced to the vertical of armored concrete support rail beam, vertical and horizontal rigidity；

One end of the armored concrete support rail beam base plate is overlapped on the bridge abutment, and both are connected by pin Release longitudinal restraint is connect, and limits lateral displacement；

The both sides of one end that the armored concrete support rail beam base plate is overlapped on the bridge abutment are respectively provided with the end Wall, and the headwall per side abuts respectively with the support rail beam both sides backfill filler of respective side, and for gear the support rail is protected Beam both sides backfill filler；

The trapezoidal filling body is arranged between shallow layer reinforcement area and the armored concrete support rail beam base plate, its with it is described Roadbed filling is abutted near one end of the bridge abutment under support rail beam, for accepting the armored concrete support rail beam bottom Plate, support rail beam both sides backfill filler and headwall；

The trapezoidal filling body both sides are provided with second weathering consistent with the first weathering gradient.

Preferably, the pile foundation bearing 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 bearing structure.Pin is adopted in the position reinforced concrete supporting beam of support rail beam internode seam with support rail beam base plate Nail overlap joint, remaining position adopts and just connects.

Preferably, the support rail beam both sides backfill the height of filler and the height phase of the armored concrete support rail beam base plate Deng.

Preferably, pile foundation bearing structure described in all these is arranged in ranks.

Preferably, the trapezoidal filling body mixes cement production systD using cement stabilized graded macabam.

Preferably, the armored concrete support rail beam base plate is overlapped on one end of the bridge abutment and the bridge abutment Between be provided with wear-resisting sliding layer.

Preferably, the pin includes pre-buried connection reinforcing bar, Colophonium hemp cut and stainless steel sleeve pipe, the pre-buried connection reinforcing bar The Colophonium hemp cut is set in the stainless steel sleeve pipe and between the two.

In general, by the contemplated above technical scheme of this utility model compared with prior art, can obtain down Row beneficial effect：

(1) armored concrete support rail beam base plate of the present utility model, reinforced concrete beam type structure adopt reinforced concrete Soil scene one-piece casting, the two composition integral reinforced concrete structure is floated to the magnetic for directly taking on track load and track transmission Train load, then deadweight and upper load are passed to and its rigidly connected pile foundation bearing structure, structural reliability is high.

(2) pile foundation bearing structure of the present utility model is goed deep in supporting course, and when embankment produces certain sedimentation, pile foundation carries knot Structure can still bear negative friction and provide stronger bearing capacity, it is to avoid because filling compaction and foundation stabilization quality it is wayward Impact of the differential settlement for causing to support rail beam vertical and horizontal rigidity, structure vertical cross stiffness and structural reliability it is more excellent.

(3) put circuit soft soil zone low, according to embankment stability need necessity is carried out to the superficial layer of soft stratum Reinforcing, its reinforcement depth by embankment stability control, compared to by settle and tradition when stable Two indices are controlled solely For base reinforcing mode, shallow layer reinforcement area reinforcement depth is little, can effective control roadbed reclamation and roadbed with reference to pile foundation bearing structure Settlement after construction.Non- soft soil zone can more avoid the stiffening basic ground of the wide area produced after embankment slope, and Pile foundation bearing structure construction quality is more easy to control, can effective control construction quality, investment reduction, the reduction of erection time, with obvious Technology and economic advantages.

(4) reinforced concrete supporting beam that pile foundation bearing structure and reinforced concrete floor are arranged, can greatly reduce pile foundation The stress concentration phenomenon of armored concrete support rail beam base plate at bearing structure；Further, since reinforced concrete supporting beam laterally connects Effect is connect, the lateral stiffness of structure and the ability of opposing differential settlement deformation is also increased, the quantity of transverse pile foundation can be reduced, Reduce investment.

(5) armored concrete support rail beam base plate is overlapped on bridge abutment, by pin near one end of elevated bridge Connection, it is to avoid between the two because of sedimentation faulting of slab ends that measures of foundation treatment difference causes, it is ensured that the floating F rails of magnetic it is low put circuit with Bridge abutment connected position will not produce faulting of slab ends, effectively realize that magnetic suspension traffic engineering elevated structure puts line transition section F with low The smoothly transition of rail.

Description of the drawings

Fig. 1 is schematic longitudinal section of the present utility model；

Fig. 2 is along the generalized section of I-I line in Fig. 1；

Fig. 3 is along the generalized section of II-II line in Fig. 1；

Fig. 4 is along the generalized section of III-III line in Fig. 1；

Fig. 5 is the floor map that armored concrete support rail beam base plate is overlapped on bridge abutment in this utility model；

Fig. 6 is that this utility model pile foundation reinforced concrete supporting beam has just connect connection signal with armored concrete support rail beam base plate Figure.

Fig. 7 is that this utility model pile foundation reinforced concrete supporting beam overlaps connection signal with armored concrete support rail beam base plate Figure.

Fig. 8 is the cross-sectional view of pin in this utility model.

Specific embodiment

In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and enforcement Example, is further elaborated to this utility model.It should be appreciated that specific embodiment described herein is only to explain This utility model, is not used to limit this utility model.Additionally, institute in this utility model disclosed below each embodiment As long as the technical characteristic being related to does not constitute each other conflict and just can be mutually combined.

With reference to Fig. 1～Fig. 8, medium-and low-speed maglev single line embankment location pile foundation joist type support rail beam transition section structure, including stake Base bearing structure 3, reinforced concrete supporting beam 90, armored concrete support rail beam base plate 2, reinforced concrete beam type structure 1, support rail beam Lower roadbed filling 5, support rail beam both sides backfill filler 4, bridge abutment 12, trapezoidal filling body 14 and headwall 13, wherein,

The pile foundation bearing structure 3 is provided with many, is vertically arranged per pile foundation bearing structure 3 described in root, and per root Accept the reinforced concrete supporting beam 90 in the top of the pile foundation bearing structure 3；

The reinforced concrete supporting beam 90 accepts the armored concrete support rail beam base plate 2；

Accept the reinforced concrete beam type structure 1 in the top of the armored concrete support rail beam base plate 2；

The top of the pile foundation bearing structure 3 is embedded in the reinforced concrete supporting beam 90 and just connects with it, and in across place pile foundation The top of bearing structure 3 should still be embedded in the armored concrete support rail beam base plate 2 in addition to the embedded reinforced concrete supporting beam 90 Just connect with it, the armored concrete support rail beam base plate 2 is with the formed by integrally casting molding of the reinforced concrete beam type structure 1 so as to altogether With composition armored concrete support rail beam 9；

It is provided with the reinforced concrete supporting beam 90 for limiting the lateral displacement of armored concrete support rail beam base plate 2 Convex gear platform 91；

Under the support rail beam roadbed filling 5 be arranged on shallow layer reinforcement area 6 and the armored concrete support rail beam base plate 2 it Between, for be the armored concrete support rail beam base plate 2, reinforced beam 90 and support rail beam both sides backfill filler 4 provide Operation platform, and provide lateral support for the pile foundation bearing structure 3；Wherein, the shallow layer reinforcement area 6 is arranged on soft stratum Roadbed filling 5 and the reinforced concrete beam type structure 1 under 7 superficial layer, and the shallow layer reinforcement area 6, the support rail beam Vertical consistency；

The support rail beam both sides backfill filler 4 is accepted by roadbed filling 5 under the support rail beam, and the support rail beam two Side backfill filler 4 props up the both sides of the armored concrete support rail beam base plate 2, with to the armored concrete support rail beam base plate 2 The transverse shifting of the armored concrete support rail beam base plate 2 is shielded and constrained, and maintenance passage is provided；

Roadbed filling 5 and support rail beam both sides backfill filler 4 collectively form filler filling body 10, institute under the support rail beam State and the first weathering 11 is provided with filler filling body 10；

Roadbed filling 5, the shallow layer reinforcement under the support rail beam are sequentially passed through per the lower end of pile foundation bearing structure 3 described in root Stretch into behind area 6 and the soft stratum 7 in supporting course 8, so that when soft stratum 7 produces sedimentation, the pile foundation bearing structure 3 can Negative friction is born, so as to provide stable carrying to armored concrete support rail beam base plate 2 and reinforced concrete beam type structure 1 Power, is produced not with the sedimentation reduced because of filler filling body 10 to the vertical of armored concrete support rail beam 9, vertical and horizontal rigidity Profit affects；

One end of the armored concrete support rail beam base plate 2 is overlapped on the bridge abutment 12, and both pass through pin 15 Connection Release longitudinal restraints are followed closely, and limits lateral displacement；

The both sides of one end that the armored concrete support rail beam base plate 2 is overlapped on the bridge abutment 12 are respectively provided with described Headwall 13, and the headwall 13 per side abuts respectively with the support rail beam both sides backfill filler 4 of respective side, for gear shield institute State support rail beam both sides backfill filler 4；

The trapezoidal filling body 14 is arranged between shallow layer reinforcement area 6 and the armored concrete support rail beam base plate 2, its with Roadbed filling 5 is abutted near one end of the bridge abutment 12 under the support rail beam, is held for accepting the armored concrete Beam-and-rail base plate 2, support rail beam both sides backfill filler 4 and headwall 13；

The both sides of trapezoidal filling body 14 are provided with second weathering 17 consistent with the gradient of the first weathering 11.

Further, the pile foundation bearing structure 3 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 bearing structure.Pin is adopted in the position reinforced concrete supporting beam of support rail beam internode seam with support rail beam base plate Nail overlap joint, remaining position adopts and just connects.

The height of the support rail beam both sides backfill filler 4 and highly equal, the institute of the armored concrete support rail beam base plate 2 These the described pile foundation bearing structures 3 having are arranged in ranks, and the trapezoidal filling body 14 is made using cement stabilized graded macabam, described Armored concrete support rail beam base plate 2 be overlapped between one end of the bridge abutment 12 and the bridge abutment 12 be provided with it is wear-resisting Sliding layer 16.

The pin 15 includes pre-buried connection reinforcing bar 15.1, Colophonium hemp cut 15.2 and stainless steel sleeve pipe 15.3, described pre-buried Connection reinforcing bar 15.1 is located in the stainless steel sleeve pipe 15.3 and arranges between the two the Colophonium hemp cut 15.2.

This utility model provides medium-and low-speed maglev single line embankment location pile foundation joist type support rail beam transition section structure, can keep away Exempt from the low defect for putting circuit support rail girder construction of tradition, construction quality is easily controlled, and long-time stability are more preferable, and it both meets Middle low speed magnetic suspension traffic engineering track structure meets bedding long-term again to the deformation of support rail girder construction and the high request of settlement after construction The requirement of the controllability of stability, durability and construction quality, and economy is more preferably.

The agent structure of this utility model armored concrete support rail beam 9 adopts reinforced concrete soil scene one-piece casting, reinforcing bar The girder structure of concrete support rail beam 9 to directly take on track load and track transmission magnetic-levitation train load, then will deadweight and Upper load is passed to and its rigidly connected pile foundation bearing structure 3, and structural reliability is high.Pile foundation bearing structure 3 adopts reinforcing bar Concrete drilling bored concrete 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 The deep reliable supporting course 8 of pile foundation, embankment occurs to be produced between certain sedimentation and armored concrete support rail beam 9 when coming to nothing, and pile foundation is held Carrying structure 3 can still bear negative friction and provide stronger bearing capacity, with stronger longitudinal, vertical and lateral stability.

The reinforced concrete supporting beam 90 that pile foundation bearing structure and reinforced concrete floor 2 are arranged, can greatly reduce pile foundation The stress concentration phenomenon of armored concrete support rail beam base plate 2 at bearing structure；Further, since reinforced concrete supporting beam 90 is horizontal Interconnection function, also increases the lateral stiffness of structure and the ability of opposing differential settlement deformation, can reduce the number of transverse pile foundation Amount, reduces investment.

One end of armored concrete support rail beam base plate 2 of armored concrete support rail beam 9 is overlapped on bridge abutment 12, and the two leads to Cross pin 15 to connect, the releasable temperature stress in the longitudinal direction of pin 15 realizes that support rail beam, in the flexible of longitudinal direction, 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 the lap position of abutment 12 is consistent, it is to avoid bridge abutment 12 and low putting produce between circuit support rail girder construction faulting of slab ends sedimentation；It is low Put the other end of circuit armored concrete support rail beam base plate 2 be embedded in it is stable it is low put in line construction, its sedimentation puts circuit with low Structure is consistent, is put line construction Jing basement process and is filled after compacting sedimentation value in controlled range due to low, therefore, support rail Sedimentation between beam two ends be located at bridge abutment 12 and it is low put between line construction, close 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, and the smooth-going of transition segment limit F rails has been 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 to a certain extent release the rotation that support rail beam is likely to occur under the load actions such as relative settlement, temperature Constraint, and the dynamic stress cushioning effect of bridge abutment 12 is transferred to magnetic-levitation train, it also avoid support rail beam and bridge abutment Abrasion and stress concentration between 12 causes the partial pressing of structure to destroy.

Headwall 13 is set by low line side of putting, is returned for gear shield circuit support rail beam both sides of putting low with the joint of bridge abutment 12 Filler.Low to put geotechnique basis reference High-speed Railway Bridges road transition section structure form setting under circuit support rail beam, changeover portion is trapezoidal Filling body 14 is filled using graded broken stone water mixing mud, and the top layer on the top of trapezoidal filling body 14 is also filled out using graded broken stone water mixing mud Build, while meeting corresponding compacting requirement and basement process requirement of settlement control, set between graded broken stone and bridge abutment 12 Non-fine concrete loaded filter is put, while arrange drain pipe water is drawn outside roadbed.

Changeover portion be located at soft soil zone when, should according to embankment stability need ground superficial layer is carried out it is necessary plus Gu, form shallow layer reinforcement area 6.By embankment stability control, whether it reinforces and reinforcement depth the reinforcement depth in shallow layer reinforcement area 6 Should be determined by stability calculation according to embankment raising, foundation condition.Compared to biography when being controlled by sedimentation and stable Two indices Unite for single ground reinforcing mode, the reinforcement depth of shallow layer reinforcement area 6 is little, can effective control embankment with reference to pile foundation bearing structure 3 Stable and post-construction settlement of subgrade.By contrast, the structural strengthening quantity is little, invests little, and more conducively sinks after construction quality and work The control of drop, and save cost and reduction of erection time.

The specific making step of this utility model is as follows：

(1) construction overhead bridge structure abutment, pours bridge abutment body concrete, abutment of constructing, and backfills abutment foundation foundation ditch； The positioning of pin and embedded work should be performed before abutment concreting；

(2) it is low after smooth platform to put circuit location construction site, carried out at necessary shallow layer foundation reinforcing according to design requirement Reason, after the completion of basement process, is filled by changeover portion design requirement and low after platform puts under circuit support rail beam geotechnique basis, support rail beam after platform Lower geotechnological basic filling construction synchronous with abutment cone.According to each position wire feeding and compaction requirement, changeover portion when filling Scope is synchronous layered with non-changeover portion area to fill, and next layer is filled and fill again after detection meets the requirements last layer, until reinforcing bar is mixed At the absolute altitude of solidifying soil support rail beam base plate bottom surface；

(3) irrigate in embankment subgrade cross section, vertical section direction construction drill in reinforced concrete floor bottom surface absolute altitude Stake, i.e. pile foundation bearing structure 3, drilled pile construction should be adopted and disturb little construction technology to railway embankment, if necessary in embankment Steel pile casting is set in the range of filled height or draws hole；After cast-in-situ bored pile reaches desired strength, pile crown is amputated by code requirement, Colligation concrete floor and the connection reinforcing bar with stake；

(4) formwork erection of platform 91, one-time-concreting molding, before pouring are kept off to reinforced concrete supporting beam 90, convex according to design attitude Carry out all kinds of built-in fittings such as pin 10 and the positioning with the connection reinforcing bar of pile foundation and install, concrete reaches and removed after design strength Template；

(5) high-strength wearable sliding layer is laid on abutment in armored concrete support rail beam and abutment overlap joint, according to design Section is long to armored concrete support rail beam base plate 2 and the merogenesis formwork erection of reinforced concrete beam type structure 1, and each part concrete reaches design After intensity distinguish form removal, one-time-concreting molding, carry out before pouring all kinds of built-in fittings such as pin, sleeper pedestal connect reinforcing bar, The positioning of water conservancy diversion rail bearing built-in fitting etc. and installation；

(6) construction is low puts the joint both sides headwall 13 of circuit bridge abutment 12, and headwall 13 is applied using concrete one-piece casting Work, waits the concrete of headwall 13 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 cone top surface confining bed of design and construction bridge abutment 12 etc., side of constructing Slope protection, drainage system etc..

(7) carry out it is low put circuit and the laying of the elevated structure section of track and the installation of associated satellite engineering and construction, construction finishes Afterwards.

As it will be easily appreciated by one skilled in the art that preferred embodiment of the present utility model is the foregoing is only, not To limit this utility model, all any modifications made within spirit of the present utility model and principle, equivalent and change Enter, should be included within protection domain of the present utility model.

Claims (8)

1. medium-and low-speed maglev single line embankment location pile foundation joist type support rail beam transition section structure, it is characterised in that hold including pile foundation Carry roadbed under structure, reinforced concrete supporting beam, armored concrete support rail beam base plate, reinforced concrete beam type structure, support rail beam to fill out Material, support rail beam both sides backfill filler, bridge abutment, trapezoidal filling body and headwall, wherein,

The pile foundation bearing structure is provided with many, is vertically arranged per pile foundation bearing structure described in root, and per stake described in root Accept the reinforced concrete supporting beam in the top of base bearing structure；

The reinforced concrete supporting beam accepts the armored concrete support rail beam base plate；

Accept the reinforced concrete beam type structure in the top of the armored concrete support rail beam base plate；

The top of the pile foundation bearing structure is embedded in the reinforced concrete supporting beam and just connects with it, the reinforced concrete supporting beam with The armored concrete support rail beam base plate has just connect or has overlapped, the armored concrete support rail beam base plate and the reinforced beam The molding of formula structural integrity is so as to collectively forming armored concrete support rail beam；

The reinforced concrete supporting beam both sides are provided with for limiting the convex of the armored concrete support rail beam base plate lateral displacement Type keeps off platform；

Roadbed filling is arranged between shallow layer reinforcement area and the armored concrete support rail beam base plate under the support rail beam, for Operation platform is provided for the armored concrete support rail beam base plate, reinforced beam and support rail beam both sides backfill filler, and is The pile foundation bearing structure provides lateral support；Wherein, the shallow layer reinforcement area is arranged on the superficial floor of soft stratum, and institute State the vertical consistency of roadbed filling and the reinforced concrete beam type structure under shallow layer reinforcement area, the support rail beam；

The support rail beam both sides backfill filler is accepted by roadbed filling under the support rail beam, and the support rail beam both sides backfill Filler props up the both sides of the armored concrete support rail beam base plate, to shield to the armored concrete support rail beam base plate And the transverse shifting of the armored concrete support rail beam base plate is constrained, and maintenance passage is provided；

Roadbed filling and support rail beam both sides backfill filler collectively form filler filling body under the support rail beam, and described filler is filled out Building body both sides are provided with the first weathering；

Roadbed filling under the support rail beam, the shallow layer reinforcement area and institute are sequentially passed through per the lower end of pile foundation bearing structure described in root State and stretch into after soft stratum in supporting course, so that when soft stratum produces sedimentation, the pile foundation bearing structure can bear negative frictional resistance Power, so as to 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 the sedimentation of material filling body is produced to the vertical of armored concrete support rail beam, vertical and horizontal rigidity；

One end of the armored concrete support rail beam base plate is overlapped on the bridge abutment, and both are released by pin connection Longitudinal restraint is put, and limits lateral displacement；

The both sides of one end that the armored concrete support rail beam base plate is overlapped on the bridge abutment are respectively provided with the headwall, and And the headwall per side is abutted respectively with the support rail beam both sides backfill filler of respective side, for the gear shield support rail beam both sides Backfill filler；

The trapezoidal filling body is arranged between shallow layer reinforcement area and the armored concrete support rail beam base plate, itself and the support rail Roadbed filling is abutted near one end of the bridge abutment under beam, for accepting the armored concrete support rail beam base plate, holding Beam-and-rail both sides backfill filler and headwall；

The trapezoidal filling body both sides are provided with second weathering consistent with the first weathering gradient.

2. pile foundation joist type support rail beam transition section structure in medium-and low-speed maglev single line embankment location according to claim 1, its It is characterised by, the pile foundation bearing structure is cast-in-situ bored pile, reinforced concrete supporting beam has just connect or overlapped with support rail beam base plate, with Pile foundation bearing structure just connects.

3. pile foundation joist type support rail beam transition section structure in medium-and low-speed maglev single line embankment location according to claim 1, its It is characterised by, is overlapped using pin in position reinforced concrete supporting beam and the support rail beam base plate of support rail beam internode seam, remaining position Just connect.

4. pile foundation joist type support rail beam transition section structure in medium-and low-speed maglev single line embankment location according to claim 1, its It is characterised by, the height of the support rail beam both sides backfill filler is highly equal with the armored concrete support rail beam base plate.

5. pile foundation joist type support rail beam transition section structure in medium-and low-speed maglev single line embankment location according to claim 1, its It is characterised by, pile foundation bearing structure described in all these is arranged in ranks.

6. pile foundation joist type support rail beam transition section structure in medium-and low-speed maglev single line embankment location according to claim 1, its It is characterised by, the trapezoidal filling body mixes cement production systD using graded broken stone.

7. pile foundation joist type support rail beam transition section structure in medium-and low-speed maglev single line embankment location according to claim 1, its It is characterised by, the armored concrete support rail beam base plate is overlapped between one end of the bridge abutment and the bridge abutment and sets It is equipped with wear-resisting sliding layer.

8. pile foundation joist type support rail beam transition section structure in medium-and low-speed maglev single line embankment location according to claim 1, its It is characterised by, the pin includes pre-buried connection reinforcing bar, Colophonium hemp cut and stainless steel sleeve pipe, the pre-buried connection reinforcing bar is located at institute State in stainless steel sleeve pipe and arrange between the two the Colophonium hemp cut.