CN106436496A - Composite bearing trail beam transition section structure of pile foundation at fill section of medium-low speed magnetic levitation singlet line - Google Patents
Composite bearing trail beam transition section structure of pile foundation at fill section of medium-low speed magnetic levitation singlet line Download PDFInfo
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- CN106436496A CN106436496A CN201610826186.5A CN201610826186A CN106436496A CN 106436496 A CN106436496 A CN 106436496A CN 201610826186 A CN201610826186 A CN 201610826186A CN 106436496 A CN106436496 A CN 106436496A
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- 230000007704 transition Effects 0.000 title claims abstract description 23
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- 239000000945 filler Substances 0.000 claims abstract description 39
- 238000010276 construction Methods 0.000 claims abstract description 37
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- 239000010410 layer Substances 0.000 claims description 29
- 230000002787 reinforcement Effects 0.000 claims description 22
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Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/008—Drainage of track
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B25/00—Tracks for special kinds of railways
- E01B25/30—Tracks for magnetic suspension or levitation vehicles
- E01B25/305—Rails or supporting constructions
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/34—Foundations for sinking or earthquake territories
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/07—Drainage
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/08—Deep or vertical foundation
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/09—Ballastless systems
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
The invention belongs to the technical field of low-embedded lines of medium-low speed magnetic levitation traffic engineering and discloses a composite bearing trail beam transition section structure of pile foundation at a fill section of a medium-low speed magnetic levitation singlet line. The structure comprises first pile foundation bearing structures, pile foundation joist composite bearing structures, reinforced concrete bearing trail beam baseboards, reinforced concrete beam structures, under-bearing trail beam roadbed filler, bearing trail beam either side backfill filler, a bridge abutment, trapezoidal filling bodies and side walls. Multiple first pile foundation bearing structures are arranged; the reinforced concrete beam structures are borne on the tops of the reinforced concrete bearing trail beam baseboards; and the bearing trail beam either side backfill filler is borne by the under-bearing trail beam roadbed filler. The structure is better in long term stability, the high requirements for distortion and post-construction settlement of bearing trail beam structures are met, the requirements for long term stability and durability of foundation beds as well as controllability of construction quality are met, and the smooth transition between magnetic levitation elevated structures and F tracks at the transition sections of low-embedded lines is effectively realized.
Description
Technical field
The invention belongs to middle low speed magnetic suspension traffic engineering is low puts Line technology field, more particularly, to middle low speed magnetic
Floating single line embankment location 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
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 all based on elevated structure, rarely seen about elevated structure and the low research that puts 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 is adopted mostly
Trapezium structure, employs cement stabilized graded macabam in trapezoidal scope and fills, and employ the compacting higher than non-changeover portion roadbed
Require.During built high-speed railway operation, bridge transition segment limit, often there is non-fragment orbit protuberance, gap, grout
Etc. disease.The reason for this disease, remained by the earth structure of rock and soil constitution, changeover portion due to changeover portion roadbed mostly
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), as 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 rail of medium-and low-speed maglev traffic line is spliced using fishplate bar scene by a short rail successively, and is left between rail
Seam, meets the ride comfort of the F rail of magnetic-levitation train even running requirement, and works under rail will be leaned on substantially to ensure.Low put circuit location,
Under support rail beam, basis is by the earth structure of rock and soil constitution, is affected by factors such as landform, geological conditions, and quality is not relatively easily-controllable
System, is also easy to produce differential settlement under load and the effect of various factor of natural environments, can occur 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 rail, in some instances it may even be possible to cause F rail to produce the problems such as faulting of slab ends, deformation, when serious, by the normal fortune of impact maglev vehicle
Battalion.
Content of the invention
Disadvantages described above or Improvement requirement for prior art, the invention provides medium-and low-speed maglev single line embankment location is multiple
Box-like support rail beam transition section structure, the structure should meet elevated structure and the low rigidity that puts between circuit and sedimentation transition, protect
Card magnetic suspension traffic engineering elevated structure is required with the low ride comfort for putting line transition section F rail, meets magnetic floating traffic engineering again
The low intensity for putting line transition section sub-rail foundation, long-time stability are required, and construction quality controllability is strong.For realizing above-mentioned mesh
, it is proposed, according to the invention, there is provided medium-and low-speed maglev single line embankment ground stage composite support rail beam transition section structure, it is characterised in that
Including the first pile foundation bearing structure, pile foundation joist composite bearing structure, armored concrete support rail beam base plate, reinforced concrete beam type
Roadbed filling, support rail beam both sides backfill filler, bridge abutment, trapezoidal filling body and headwall under structure, support rail beam, wherein,
The first pile foundation bearing structure and the pile foundation joist composite bearing structure accept the armored concrete jointly
Support rail beam base plate；
The first pile foundation bearing structure is provided with many, is all vertically arranged per the first pile foundation bearing structure described in root, and
And the armored concrete support rail beam base plate is all accepted per the top of the first pile foundation bearing structure described in root, first pile foundation is held
The top of load structure is embedded in the armored concrete support rail beam base plate and is just connect with which；
The reinforced concrete beam type structure, and two adjacent sections are accepted in the top of the armored concrete support rail beam base plate
Expansion joint is reserved between the armored concrete support rail beam base plate；
The pile foundation joist composite bearing structure setting has the multiple and adjacent two piece armored concrete support rail beam
Pile foundation joist composite bearing structure described in one is respectively provided with the expansion joint of base plate, for supporting this two adjacent sections reinforcing bar
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
Structure being carried, and the reinforced concrete supporting beam all being accepted per the top of the second pile foundation bearing structure described in root, the reinforcing bar is mixed
Solidifying soil joist accepts the armored concrete support rail beam base plate；
The top of the second pile foundation bearing structure is embedded in the reinforced concrete supporting beam and is just connect with which, the reinforced concrete
Native joist has just been connect with the armored concrete support rail beam base plate or has overlapped, the armored concrete support rail beam base plate and the reinforcing bar
Concrete beam-type structural integrity pours molding so as to collectively form armored concrete support rail beam；
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；
The reinforced concrete beam type structure, and described first are accepted in the top of the armored concrete support rail beam base plate
The top of pile foundation bearing structure is embedded in the armored concrete support rail beam base plate and is just connect with which, the armored concrete support rail beam bottom
Plate pours molding so as to collectively form armored concrete support rail beam with the reinforced concrete beam type structural integrity；
Under the support rail beam, roadbed filling is arranged between shallow layer reinforcement area and the armored concrete support rail beam base plate, with
Flat for providing construction for the armored concrete support rail beam base plate, reinforced concrete supporting beam and support rail beam both sides backfill filler
Platform, and lateral support is provided for the pile foundation bearing structure；Wherein, the shallow layer reinforcement area is arranged on the superficial of soft stratum
Layer, 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；
Under the support rail beam, roadbed filling and support rail beam both sides backfill filler collectively form filler filling body, described fill out
Material filling body both sides are provided with the first weathering；
Sequentially pass through roadbed filling, the shallow-layer under the support rail beam to add per the lower end of the first pile foundation bearing structure described in root
Stretch in supporting course after Gu Qu and the soft stratum, with soft stratum produce sedimentation when, the first pile foundation bearing structure
Negative friction can be born, so as to stable carrying be provided to armored concrete support rail beam base plate and reinforced concrete beam type structure
Power, with the sedimentation that reduces because of filler filling body vertical, the vertical and horizontal rigidity of armored concrete support rail beam is produced unfavorable
Impact；
One end of the armored concrete support rail beam base plate is overlapped on the bridge abutment, and both are by pin even
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 abutted with the support rail beam both sides backfill filler of respective side respectively, protects the support rail for gear
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 described
Under support rail beam, roadbed filling is abutted near one end of the bridge abutment, 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 first pile foundation bearing structure is that cast-in-situ bored pile, reinforced concrete supporting beam is firm with support rail beam base plate
Connect or overlap, just connect with the first pile foundation bearing structure.
Preferably, overlapped using pin with support rail beam base plate in the position reinforced concrete supporting beam of support rail beam internode seam, its
Remaining position is using just connecing.
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, the first pile foundation bearing structure described in all these is arranged in ranks.
Preferably, the trapezoidal filling body mixes cement production systD using graded broken stone.
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 the present invention compared with prior art, can obtain down and show
Beneficial effect：
(1) the armored concrete support rail beam base plate of the present invention, reinforced concrete beam type structure are all existing using armored concrete
Field one-piece casting, the two composition integral reinforced concrete structure is in order to directly take on the magnetic-levitation train of track load and track transmission
Load, then deadweight and upper load are passed to and its rigidly connected first pile foundation bearing structure, structural reliability height.
(2) the first pile foundation bearing structure of the present invention is goed deep in supporting course, and when embankment produces certain sedimentation, the first pile foundation is held
Carry structure still to bear negative friction and stronger bearing capacity is provided, it is to avoid because foundation stabilization and filling compaction quality are difficult
Impact of the differential settlement that control is caused to support rail beam vertical and horizontal rigidity, structure vertical cross stiffness and structural reliability are more
Excellent.
(3) put circuit soft soil zone low, according to embankment stability need necessity is carried out to the superficial layer of soft stratum
Reinforcing, its reinforcement depth by embankment stability control, compared to by tradition when sedimentation and stable Two indices control solely
For base reinforcing mode, shallow layer reinforcement area reinforcement depth is little, in conjunction with the first pile foundation bearing structure can effective control roadbed reclamation and
Post-construction settlement of subgrade.At the foundation stabilization of the wide area that non-soft soil zone is produced after can more avoiding embankment slope
Reason, and the first pile foundation bearing structure construction quality is more easy to control, can effective control construction quality, investment reduction, the reduction of erection time, tool
There are 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 laterally the connecting of reinforced concrete supporting beam
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) adjacent armored concrete support rail beam base plate shares pile foundation joist composite bearing structure, and in adjacent steel
Expansion joint is reserved between reinforced concrete support rail beam base plate, can be avoided impact failure of the section by train load of encorbelmenting, and be reduced temperature
Stress and the impact of shrinkage and creep.
(6) 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 magnetic float F rail low put circuit with
Bridge abutment connected position will not produce faulting of slab ends, effectively realize magnetic suspension traffic engineering elevated structure and put line transition section F with low
The smoothly transition of rail.
Description of the drawings
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 view of pin in the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, and
It is not used in the restriction present invention.As long as additionally, involved technical characteristic in each embodiment of invention described below
Do not constitute conflict each other can just be mutually combined.
With reference to Fig. 1～Fig. 6, medium-and low-speed maglev single line embankment location pile foundation combined type support rail beam transition section structure, including the
One pile foundation bearing structure 3, pile foundation joist composite bearing structure 90, armored concrete support rail beam base plate 2, reinforced concrete beam type knot
Roadbed filling 5, support rail beam both sides backfill 4 bridge abutment 12 of filler, trapezoidal filling body 14 and headwall 13 under structure 1, support rail beam, its
In,
The first pile foundation bearing structure 3 and the pile foundation joist composite bearing structure 90 accept the reinforced concrete jointly
Native support rail beam base plate 2；
The first pile foundation bearing structure 3 is provided with many, is all vertically arranged per the first pile foundation bearing structure 3 described in root,
And the armored concrete support rail beam base plate 2 is all accepted per the top of the first pile foundation bearing structure 3 described in root, described first
The top of base bearing structure 3 is embedded in the armored concrete support rail beam base plate 2 and is just connect with which；
The reinforced concrete beam type structure 1, and adjacent two are accepted in the top of the armored concrete support rail beam base plate 2
Save between the armored concrete support rail beam base plate 2 and reserve expansion joint；
The pile foundation joist composite bearing structure 90 is provided with the two multiple and adjacent sections armored concrete support rail
Pile foundation joist composite bearing structure 90 described in one is respectively provided with the expansion joint of beam base plate 2, for supporting this two adjacent section institute
Armored concrete support rail beam base plate 2 is stated, each described pile foundation joist composite bearing structure 90 all includes reinforced concrete supporting beam 901
With the second pile foundation bearing structure 902, and the reinforced concrete is all accepted per the top of the second pile foundation bearing structure 902 described in root
Native joist 901, the reinforced concrete supporting beam 901 accepts the armored concrete support rail beam base plate 2；
The top of the second pile foundation bearing structure 902 is embedded in the reinforced concrete supporting beam 901 and is just connect with which, the steel
Reinforced concrete joist 901 has just been connect with the armored concrete support rail beam base plate 2 or has overlapped, the armored concrete support rail beam base plate
2 with 1 formed by integrally casting molding of the reinforced concrete beam type structure so as to collectively form armored concrete support rail beam 9；
901 both sides of the reinforced concrete supporting beam are provided with horizontal for limiting the armored concrete support rail beam base plate 2
The convex gear platform of displacement；
The reinforced concrete beam type structure 1 is accepted at the top of the armored concrete support rail beam base plate 2, and described the
The top of one pile foundation bearing structure 3 is embedded in the armored concrete support rail beam base plate 2 and is just connect with which, the armored concrete support rail
Beam base plate 2 is with 1 formed by integrally casting molding of the reinforced concrete beam type structure so as to collectively form armored concrete support rail beam 9；
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 being that the armored concrete support rail beam base plate 2, reinforced concrete supporting beam 90 and support rail beam both sides backfill filler 4 are carried
For operation platform, and lateral support is provided for the pile foundation bearing structure 3；Wherein, the shallow layer reinforcement area 6 is arranged on flabbily
The superficial layer of layer 7, and roadbed filling 5 and the reinforced concrete beam type structure under the shallow layer reinforcement area 6, the support rail beam
1 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
Shield and constrain the transverse shifting of the armored concrete support rail beam base plate 2, and maintenance passage is provided；
Under the support rail beam, roadbed filling 5 and support rail beam both sides backfill filler 4 collectively form filler filling body 10, institute
State 10 both sides of filler filling body and be provided with the first weathering 11；
Roadbed filling 5, the shallow-layer under the support rail beam is sequentially passed through per the lower end of the first pile foundation bearing structure 3 described in root
Stretch into behind stabilization zone 6 and the soft stratum 7 in supporting course 8, so that when soft stratum 7 produces sedimentation, first pile foundation is held
Carry structure 3 and negative friction can be born, so as to provide surely to armored concrete support rail beam base plate 2 and reinforced concrete beam type structure 1
Fixed bearing capacity, to reduce vertical, vertical and horizontal rigidity of the sedimentation to armored concrete support rail beam 9 because of filler filling body 10
The adverse effect of generation；
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 abutted with the support rail beam both sides backfill filler 4 of respective side respectively, 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
Under the support rail beam, roadbed filling 5 is abutted near one end of the bridge abutment 12, is held for accepting the armored concrete
Beam-and-rail base plate 2, support rail beam both sides backfill filler 4 and headwall 13；
14 both sides of trapezoidal filling body are provided with second weathering 17 consistent with 11 gradient of the first weathering.
Further, the first pile foundation bearing structure 3 is cast-in-situ bored pile, reinforced concrete supporting beam 90 and 9 bottom of support rail beam
Plate 2 has just connect or has overlapped, and just connects with pile foundation bearing structure 3.Support rail beam internode seam position reinforced concrete supporting beam 901 with described
Armored concrete support rail beam base plate 2 is overlapped using pin 15, and remaining position is using just connecing.
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 first pile foundation bearing structures 3 having are arranged in ranks.
Further, the trapezoidal filling body 14 mixes cement production systD using graded broken stone, the armored concrete support rail beam bottom
Plate 2 is overlapped between one end of the bridge abutment 12 and the bridge abutment 12 and is provided with wear-resisting sliding layer 16, the pin
15 include pre-buried connection reinforcing bar 15.1, Colophonium hemp cut 15.2 and stainless steel sleeve pipe 15.3, and the pre-buried connection reinforcing bar 15.1 is located at
The stainless steel sleeve pipe 15.3 is interior and the Colophonium hemp cut 15.2 is fixedly installed between the two.
The structural shape can in effectively solving the low circuit of putting of low speed magnetic suspension traffic engineering tight to post-construction settlement of subgrade requirement
Lattice, take that the engineering that traditional foundation stabilization measure causes is huge, invest big, long in time limit, and basement process and embankment
Construction quality is wayward, the problem of bedding long-time stability and poor durability, so as to improve low circuit support rail girder construction of putting
Reliability, reduces the engineering risk of traditional structure pattern.
9 agent structure of armored concrete support rail beam of the present invention is all using reinforced concrete soil scene one-piece casting, reinforced concrete
Native 9 girder structure of support rail beam in order to directly take on track load and track transmission magnetic-levitation train load, then will deadweight and top
Load is passed to and its rigidly connected pile foundation bearing structure 3, structural reliability height.Pile foundation bearing structure 3 adopts 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
Go deep into reliability supporting course 8, when generation is come to nothing between the certain sedimentation of embankment generation and armored concrete support rail beam 9, pile foundation is carried to be tied
Structure 3 still can bear negative friction and provide stronger bearing capacity, with stronger longitudinal, vertical and lateral stability.
2 one end of armored concrete support rail beam base plate of armored concrete support rail beam 9 is overlapped on bridge abutment 12, and the two leads to
Crossing pin 15 to connect, the releasable temperature stress in 15 longitudinal direction of pin, support rail beam is realized in the flexible of longitudinal direction, laterally limit support rail beam
Displacement, improves the lateral stability of structure.One end of support rail beam is overlapped with bridge abutment 12, makes low to put circuit support rail beam and bridge
The sedimentation of 12 lap position of abutment is consistent, it is to avoid bridge abutment 12 produces faulting of slab ends sedimentation with low putting between circuit support rail girder construction；Low
Put 2 other end of circuit armored concrete support rail beam base plate be embedded in stable low put in line construction, its sedimentation puts circuit with low
Structure is consistent, as low line construction of putting through basement process and fills after compacting sedimentation value in controlled range, therefore, support rail
Sedimentation between beam two ends is put between line construction with low positioned at bridge abutment 12, is close to linear change, it is achieved thereby that overhead
Bridge structure and the low sedimentation transition that puts between line construction, it also avoid faulting of slab ends, the smooth-going of transition segment limit F rail have 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 release the rotation that support rail beam is likely to occur under the load actions such as relative settlement, temperature to a certain extent
Constraining, and the dynamic stress of bridge abutment 12 is transferred to magnetic-levitation train and play cushioning effect, it also avoid support rail beam with bridge abutment
Abrasion and stress concentration between 12 causes the partial pressing of structure to destroy.
Adjacent armored concrete support rail beam base plate 2 shares pile foundation joist composite bearing structure, and in adjacent reinforcing bar
Reserve expansion joint between concrete support rail beam base plate 2, can avoid encorbelmenting impact failure of the section by train load, and reduce temperature should
Power and the impact of shrinkage and creep.
The reinforced concrete supporting beam 90 that pile foundation bearing structure 3 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.
Low put circuit by soft soil zone when, should according to embankment stability need ground superficial layer is carried out necessary plus
Gu, form shallow layer reinforcement area 6.The reinforcement depth in shallow layer reinforcement area 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 the single ground of tradition when sedimentation and the control of stable Two indices
For reinforcing mode, 6 reinforcement depth of shallow layer reinforcement area is little, in conjunction with the first pile foundation bearing structure 3 can effective control roadbed reclamation and
Post-construction settlement of subgrade.By contrast, the new structure foundation stabilization quantity is little, invest little, and more conducively after construction quality and work
The control of sedimentation, and save cost and reduction of erection time.
The specific 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 positioning of pin and embedded work should be performed before abutment concreting；
(2) low after smooth platform 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 geotechnique basis and abutment cone synchronization filling construction.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 after detection meets the requirements and fills last layer again, 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. the first pile foundation bearing structure 3, drilled pile construction should adopt the construction technology little to the disturbance of railway embankment, exist if necessary
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) 91 formwork erection of platform is kept off to reinforced concrete supporting beam 90, convex according to design attitude, one-time-concreting molding, before pouring
All kinds of built-in fittings such as pin 10 and the positioning with the connection reinforcing bar of pile foundation and installation is carried out, concrete is removed after reaching design strength
Template；
(5) on abutment, high-strength wearable sliding layer is laid with abutment overlap joint in armored concrete support rail beam, according to design
Section is long to armored concrete support rail beam base plate 2 and 1 merogenesis formwork erection of reinforced concrete beam type structure, 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 12 joint both sides headwall 13 of circuit bridge abutment, and headwall 13 is applied using concrete one-piece casting
Work, waits 13 concrete of headwall 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 12 cone top surface confining bed of design and construction bridge abutment etc., side of constructing
Slope protection, drainage system etc..
(7) carry out low put circuit and the laying of the elevated structure section of track and installation and the construction of associated satellite engineering, construction finishes
Afterwards.
As it will be easily appreciated by one skilled in the art that the foregoing is only presently preferred embodiments of the present invention, not in order to
The restriction present invention, all any modification, equivalent and improvement that is made within the spirit and principles in the present invention etc., all should include
Within protection scope of the present invention.
Claims (8)
1. medium-and low-speed maglev single line embankment location pile foundation combined type support rail beam transition section structure, it is characterised in that including first
Base bearing structure, pile foundation joist composite bearing structure, armored concrete support rail beam base plate, reinforced concrete beam type structure, support rail
Roadbed filling, support rail beam both sides backfill filler, bridge abutment, trapezoidal filling body and headwall under beam, wherein,
The first pile foundation bearing structure and the pile foundation joist composite bearing structure accept the armored concrete support rail jointly
Beam base plate；
The first pile foundation bearing structure is provided with many, is all vertically arranged per the first pile foundation bearing structure described in root, and per
The armored concrete support rail beam base plate is all accepted on the top of the first pile foundation bearing structure described in root, and first pile foundation carries knot
The top of structure is embedded in the armored concrete support rail beam base plate and is just connect with which；
The reinforced concrete beam type structure is accepted at the top of the armored concrete support rail beam base plate, and described in two adjacent sections
Expansion joint is reserved between armored concrete support rail beam base plate；
The pile foundation joist composite bearing structure setting has the two multiple and adjacent sections armored concrete support rail beam base plate
Expansion joint at be respectively provided with the pile foundation joist composite bearing structure, for supporting this adjacent two section armored 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 carry knot
Structure, and the reinforced concrete supporting beam, the armored concrete is all accepted per the top of the second pile foundation bearing structure described in root
Joist accepts the armored concrete support rail beam base plate；
The top of the second pile foundation bearing structure is embedded in the reinforced concrete supporting beam and is just connect with which, the armored concrete support
Beam has just been connect with the armored concrete support rail beam base plate or has overlapped, the armored concrete support rail beam base plate and the reinforced concrete
The molding of native girder structure formed by integrally casting is so as to collectively form 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；
The reinforced concrete beam type structure, and first pile foundation are accepted in the top of the armored concrete support rail beam base plate
The top of bearing structure is embedded in the armored concrete support rail beam base plate and is just connect with which, the armored concrete support rail beam base plate with
The reinforced concrete beam type structural integrity pours molding so as to collectively form armored concrete support rail beam；
Under the support rail beam, roadbed filling is arranged between shallow layer reinforcement area and the armored concrete support rail beam base plate, for
Operation platform is provided for the 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 the pile foundation bearing structure；Wherein, the shallow layer reinforcement area is arranged on the superficial floor of soft stratum, and
The vertical consistency of roadbed filling and the reinforced concrete beam type structure under the 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 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 constraint armored concrete support rail beam base plate, and provide maintenance passage；
Under the support rail beam, roadbed filling and 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；
Roadbed filling under the support rail beam, the shallow layer reinforcement area are sequentially passed through per the lower end of the first pile foundation bearing structure described in root
With stretch into after the soft stratum in supporting course, with soft stratum produce sedimentation when, the first pile foundation bearing structure can be held
By negative friction, so as to provide stable bearing capacity to armored concrete support rail beam base plate and reinforced concrete beam type structure, with
Reduce the adverse effect for vertical, the vertical and horizontal rigidity of armored concrete support rail beam being produced because of the sedimentation of filler filling body；
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 with the support rail beam both sides backfill filler of respective side respectively, 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
Under beam, roadbed filling is abutted near one end of the bridge abutment, 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 combined 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 first pile foundation bearing structure is that cast-in-situ bored pile, reinforced concrete supporting beam has just been connect with support rail beam base plate or taken
Connect, just connect with the first pile foundation bearing structure.
3. pile foundation combined 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
Using just connecing.
4. pile foundation combined 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 combined 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 first pile foundation bearing structure described in all these is arranged in ranks.
6. pile foundation combined type support rail girder construction in medium-and low-speed maglev traffic engineering single line embankment location according to claim 1,
Characterized in that, the trapezoidal filling body mixes cement production systD using graded broken stone.
7. medium-and low-speed maglev traffic engineering single line embankment according to claim 1 ground stage composite support rail girder construction, which is special
Levy and be, the armored concrete support rail beam base plate is overlapped between one end of the bridge abutment and the bridge abutment and arranges
There is wear-resisting sliding layer.
8. medium-and low-speed maglev traffic engineering single line embankment according to claim 1 ground stage composite support rail girder construction, which is special
Levy and be, 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 described
Stainless steel sleeve pipe is interior and arranges the Colophonium hemp cut between the two.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610826186.5A CN106436496B (en) | 2016-09-15 | 2016-09-15 | Medium-and low-speed maglev single line embankment location pile foundation combined type support rail beam transition section structure |
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| CN201610826186.5A CN106436496B (en) | 2016-09-15 | 2016-09-15 | Medium-and low-speed maglev single line embankment location pile foundation combined type support rail beam transition section structure |
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Cited By (1)
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| CN112144340A (en) * | 2020-10-13 | 2020-12-29 | 福建中设工程咨询有限公司 | Prevention and control structure for vehicle bump at bridge head of highway and construction method |
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| DE102005057380A1 (en) * | 2005-11-30 | 2007-06-06 | Walter Sobolewski | Tubular, hollow, solid roadway |
| CN201473871U (en) * | 2009-08-26 | 2010-05-19 | 铁道第三勘察设计院集团有限公司 | Rail track of maglev train with middle and low-speed |
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