CN106436496B - Medium-and low-speed maglev single line embankment location pile foundation combined type support rail beam transition section structure - Google Patents
Medium-and low-speed maglev single line embankment location pile foundation combined type support rail beam transition section structure Download PDFInfo
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- CN106436496B CN106436496B CN201610826186.5A CN201610826186A CN106436496B CN 106436496 B CN106436496 B CN 106436496B CN 201610826186 A CN201610826186 A CN 201610826186A CN 106436496 B CN106436496 B CN 106436496B
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- rail beam
- pile foundation
- bottom plate
- armored concrete
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- 239000011150 reinforced concrete Substances 0.000 claims abstract description 62
- 238000010276 construction Methods 0.000 claims abstract description 37
- 239000000945 filler Substances 0.000 claims abstract description 37
- 239000002131 composite material Substances 0.000 claims abstract description 19
- 230000002787 reinforcement Effects 0.000 claims description 23
- 230000003014 reinforcing Effects 0.000 claims description 19
- 238000004062 sedimentation Methods 0.000 claims description 15
- 238000005266 casting Methods 0.000 claims description 7
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- 235000005607 chanvre indien Nutrition 0.000 claims description 6
- 239000011487 hemp Substances 0.000 claims description 6
- 235000012765 hemp Nutrition 0.000 claims description 6
- 235000012766 marijuana Nutrition 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims description 4
- 239000004575 stone Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 8
- 239000002689 soil Substances 0.000 description 6
- 238000011105 stabilization Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000005339 levitation Methods 0.000 description 4
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- 238000005056 compaction Methods 0.000 description 2
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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
Abstract
Line technology field is put the invention belongs to middle low speed magnetic suspension traffic engineering is low, and disclose medium-and low-speed maglev single line embankment location pile foundation combined type support rail beam transition section structure, roadbed filling under first pile foundation bearing structure, pile foundation joist composite bearing structure, armored concrete support rail beam bottom plate, reinforced concrete beam type structure, support rail beam and support rail beam both sides backfill filler, bridge abutment, trapezoidal filling body and headwall, the first pile foundation bearing structure are provided with more；Accept the reinforced concrete beam type structure in the top of armored concrete support rail beam bottom plate；Support rail beam both sides backfill filler is accepted by roadbed filling under the support rail beam.Long-time stability of the present invention are more preferable, both the high request to the deformation of support rail girder construction and settlement after construction had been met, meet the requirement of the controllability of bedding long-time stability, durability and construction quality again, effectively realize magnetic suspension elevated structure and the low smoothly transition for putting line transition section F rails.
Description
Technical field
Line technology field is put the invention belongs to middle low speed magnetic suspension traffic engineering is low, 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 was opened at present is transported
The middle low speed magnetic suspension railway business operating line that line-the East Hillside Line and in June, 2014, South Korea opened.And the middle low speed of China
Magnetic suspension traffic only has 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 with
Using.
In wheel rail high speed railway, substantial amounts of bridge changeover portion roadbed be present, high-speed railway changeover portion roadbed uses mostly
Trapezium structure, cement stabilized graded macabam is employed in trapezoidal scope and is filled, and employ the compacting higher than non-changeover portion roadbed
It is required that.During built high-speed railway operation, bridge transition segment limit, non-fragment orbit protuberance, gap, grout often occurs
Etc. disease.The reason for this disease, it is due to that changeover portion roadbed is still earth structure by rock and soil constitution mostly, changeover portion
It after roadbed is laid a railway track, still can occur necessarily to settle, poor (the specification permission settlement after construction of certain settlement after construction be present with bridge abutment
Difference is not more than 5mm), because high-speed railway uses seamless track steel rail, allow in specification within the scope of settlement after construction difference, have no effect on
Normal operation, but the diseases such as non-fragment orbit protuberance, gap, grout can be caused, it is necessary to timely repair and maintenance.
The F rails of medium-and low-speed maglev traffic lines are to be spliced by a short rail successively using fishplate bar scene, and are left between rail
Seam, meet 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 the earth structure by rock and soil constitution under support rail beam, is influenceed by factors such as landform, geological conditions, and quality is not relatively easily-controllable
System, differential settlement is also easy to produce under load and the effect of various factor of natural environment, 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 differential settlement occurs with bridge abutment position, necessarily affects
The ride comfort of F rails, in some instances it may even be possible to the problems such as causing F rails generation faulting of slab ends, deform, when serious, the normal fortune of maglev vehicle will be influenceed
Battalion.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the invention provides medium-and low-speed maglev single line embankment location to answer
Box-like support rail beam transition section structure, the structure should meet elevated structure and the low rigidity put between circuit and sedimentation transition, protect
Magnetic suspension traffic engineering elevated structure and the low ride comfort requirement for putting line transition section F rails are demonstrate,proved, meets magnetic floating traffic engineering again
The low intensity for putting line transition section sub-rail foundation, long-time stability requirement, and construction quality controllability is strong.To realize above-mentioned mesh
, it is proposed, according to the invention, with providing medium-and low-speed maglev single line embankment 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 bottom 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 bottom plate；
The first pile foundation bearing structure is provided with more, and the every first pile foundation bearing structure is vertically arranged, and
And the armored concrete support rail beam bottom plate is accepted on the top of the every first pile foundation bearing structure, first pile foundation is held
The top for carrying structure is embedded in the armored concrete support rail beam bottom plate and its rigid connection；
Accept the reinforced concrete beam type structure, and two adjacent sections in the top of the armored concrete support rail beam bottom plate
Expansion joint is reserved between the armored concrete support rail beam bottom plate；
The pile foundation joist composite bearing structure setting has the armored concrete support rail beam of multiple and adjacent two pieces
A pile foundation joist composite bearing structure is respectively provided with the expansion joint of bottom plate, for supporting this two adjacent section reinforcing bar
Concrete support rail beam bottom plate, each pile foundation joist composite bearing structure includes reinforced concrete supporting beam and the second pile foundation is held
Structure is carried, and the reinforced concrete supporting beam is accepted on the top of the every second pile foundation bearing structure, and the reinforcing bar mixes
Solidifying native joist accepts the armored concrete support rail beam bottom plate；
The top of the second pile foundation bearing structure is embedded in the reinforced concrete supporting beam and its rigid connection, the reinforced concrete
Native joist and the armored concrete support rail beam bottom plate rigid connection or overlap joint, the armored concrete support rail beam bottom plate and the reinforcing bar
Concrete beam-type structural integrity pouring molding is so as to collectively forming armored concrete support rail beam；
The reinforced concrete supporting beam both sides are provided with for limiting the armored concrete support rail beam bottom plate lateral displacement
Convex block machine；
Accept the reinforced concrete beam type structure, and described first in the top of the armored concrete support rail beam bottom plate
The top of pile foundation bearing structure is embedded in the armored concrete support rail beam bottom plate and its rigid connection, the armored concrete support rail beam bottom
Plate and the reinforced concrete beam type structural integrity pouring molding are so as to collectively forming armored concrete support rail beam；
Roadbed filling is arranged between shallow layer reinforcement area and the armored concrete support rail beam bottom plate under the support rail beam, with
It is flat for providing construction for the armored concrete support rail beam bottom plate, reinforced concrete supporting beam and support rail beam both sides backfill filler
Platform, and provide lateral support for the first pile foundation bearing structure；Wherein, the shallow layer reinforcement area is arranged on the shallow of soft stratum
Top layer, and the longitudinal direction one of roadbed filling and the reinforced concrete beam type structure under the shallow layer reinforcement area, the support rail beam
Cause；
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 bottom plate, to play protection to the armored concrete support rail beam bottom plate
The transverse shifting of the armored concrete support rail beam bottom plate is acted on and 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, described to fill out
Material filling body both sides are provided with the first weathering；
The lower end of the every first pile foundation bearing structure sequentially passes through roadbed filling, the shallow-layer under the support rail beam and added
Stretched into after Gu Qu and the soft stratum in supporting course, with soft stratum produce sedimentation when, the first pile foundation bearing structure
Negative friction can be born, so as to provide stable carrying to armored concrete support rail beam bottom plate and reinforced concrete beam type structure
Power, to reduce because the sedimentation of filler filling body is to unfavorable caused by the vertical of armored concrete support rail beam, vertical and horizontal rigidity
Influence；
One end of the armored concrete support rail beam bottom 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 bottom plate is overlapped on the bridge abutment set the end respectively
Wall, and the headwall per side is abutted with the support rail beam both sides backfill filler of respective side respectively, and the support rail is protected 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 bottom plate, its with it is described
Roadbed filling abuts close to 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 first pile foundation bearing structure is cast-in-situ bored pile, and reinforced concrete supporting beam is held with armored concrete
Beam-and-rail bottom plate rigid connection or overlap joint, with the second pile foundation bearing structure rigid connection.
Preferably, in the position reinforced concrete supporting beam and armored concrete support rail beam of armored concrete support rail beam internode seam
Bottom plate is overlapped using pin, and remaining position uses rigid connection.
Preferably, the height and the height phase of the armored concrete support rail beam bottom plate of the support rail beam both sides backfill filler
Deng.
Preferably, all these described first pile foundation bearing structures are arranged in ranks.
Preferably, the trapezoidal filling body mixes cement production systD using graded broken stone.
Preferably, the armored concrete support rail beam bottom 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, pitch hemp cut and stainless steel sleeve pipe, the pre-buried connection reinforcing bar
The pitch 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, it can obtain down and show
Beneficial effect：
(1) armored concrete support rail beam bottom plate of the invention, reinforced concrete beam type structure are showed using armored concrete
Field one-piece casting, the two forms integral reinforced concrete structure 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 invention is goed deep into supporting course, and when embankment produces certain sedimentation, the first pile foundation is held
Can still negative friction be born and provide stronger bearing capacity by carrying structure, be avoided because foundation stabilization and filling compaction quality are not easy
Influence of the differential settlement caused by control to support rail beam vertical and horizontal rigidity, structure vertical cross stiffness and structural reliability are more
It is excellent.
(3) circuit soft soil zone is put low, needs the superficial layer progress to soft stratum necessary according to embankment stability
Reinforcing, its reinforcement depth controls by embankment stability, and tradition during compared to by settling and stablize Two indices control is solely
For base reinforcing mode, shallow layer reinforcement area reinforcement depth is small, with reference to the first pile foundation bearing structure can effectively control roadbed reclamation and
Post-construction settlement of subgrade.Non- soft soil zone can be more avoided after embankment slope at the foundation stabilization of caused wide area
Reason, and the first pile foundation bearing structure construction quality is more easy to control, can effectively control construction quality, investment reduction, shorten the duration, tool
There are obvious technology and economic advantages.
The reinforced concrete supporting beam that (4) first pile foundation bearing structures and armored concrete support rail beam bottom plate are set, Ke Yi great
The big stress concentration phenomenon for reducing armored concrete support rail beam bottom plate at the first pile foundation bearing structure；Further, since reinforced concrete
The lateral connection effect of native joist, the lateral stiffness of structure and the ability of resistance differential settlement deformation are also increased, can be reduced
The quantity of transverse pile foundation, reduce investment.
(5) adjacent armored concrete support rail beam bottom plate shares pile foundation joist composite bearing structure, and in adjacent steel
Expansion joint is reserved between reinforced concrete support rail beam bottom plate, impact failure of the section by train load of encorbelmenting can be avoided, and reduce temperature
The influence of stress and shrinkage and creep.
(6) armored concrete support rail beam bottom plate is overlapped on bridge abutment close to one end of elevated bridge, passes through pin
Connection, avoid and settle faulting of slab ends caused by measures of foundation treatment difference between the two, it is ensured that magnetic float F rails 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.
Brief description of the drawings
Fig. 1 is the schematic longitudinal section of the present invention；
Fig. 2 is along the diagrammatic cross-section of I-I line in Fig. 1；
Fig. 3 is along the diagrammatic cross-section of II-II line in Fig. 1；
Fig. 4 is along the diagrammatic cross-section of III-III line in Fig. 1；
Fig. 5 is that armored concrete support rail beam bottom plate is overlapped on the floor map on bridge abutment in the present invention；
Fig. 6 is pile foundation reinforced concrete supporting beam of the present invention and armored concrete support rail beam bottom plate rigid connection connection diagram.
Fig. 7 is pile foundation reinforced concrete supporting beam of the present invention and armored concrete support rail beam bottom plate overlap joint connection diagram.
Fig. 8 is the cross-sectional view of pin in the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Conflict can is not formed each other to be mutually combined.
1~Fig. 6 of reference picture, 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 bottom plate 2, reinforced concrete beam type knot
Roadbed filling 5, support rail beam both sides backfill filler 4 bridge abutment 12, 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 bottom plate 2；
The first pile foundation bearing structure 3 is provided with more, and the every first pile foundation bearing structure 3 is vertically arranged,
And the armored concrete support rail beam bottom plate 2 is accepted on the top of the every first pile foundation bearing structure 3, described first
The top of base bearing structure 3 is embedded in the armored concrete support rail beam bottom plate 2 and its rigid connection；
Accept the reinforced concrete beam type structure 1, and adjacent two in the top of the armored concrete support rail beam bottom plate 2
Save and expansion joint is reserved between the armored concrete support rail beam bottom plate 2；
The pile foundation joist composite bearing structure 90 is provided with the two multiple and adjacent section armored concrete support rails
A pile foundation joist composite bearing structure 90 is respectively provided with the expansion joint of beam bottom plate 2, for supporting this two adjacent section institute
Armored concrete support rail beam bottom plate 2 is stated, each pile foundation joist composite bearing structure 90 includes reinforced concrete supporting beam 901
The reinforced concrete is accepted with the top of the second pile foundation bearing structure 902, and the every second pile foundation bearing structure 902
Native joist 901, the reinforced concrete supporting beam 901 accept the armored concrete support rail beam bottom plate 2；
The top of the second pile foundation bearing structure 902 is embedded in the reinforced concrete supporting beam 901 and its rigid connection, the steel
Reinforced concrete joist 901 and the rigid connection of armored concrete support rail beam bottom plate 2 or overlap joint, the armored concrete support rail beam bottom plate
2 are molded with the formed by integrally casting of reinforced concrete beam type structure 1 so as to collectively form armored concrete support rail beam 9；
The both sides of reinforced concrete supporting beam 901 are provided with for limiting the armored concrete support rail beam bottom plate 2 laterally
The convex block machine of displacement；
The reinforced concrete beam type structure 1 is accepted at the top of the armored concrete support rail beam bottom plate 2, and described the
The top of one pile foundation bearing structure 3 is embedded in the armored concrete support rail beam bottom plate 2 and its rigid connection, the armored concrete support rail
Beam bottom plate 2 is molded with the formed by integrally casting of reinforced concrete beam type structure 1 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 bottom plate 2 it
Between, carried for backfilling filler 4 for the armored concrete support rail beam bottom plate 2, reinforced concrete supporting beam 901 and support rail beam both sides
Lateral support is provided for construction platform, and for the first pile foundation bearing structure 3；Wherein, the shallow layer reinforcement area 6 is arranged on soft
The superficial layer on weak stratum 7, and roadbed filling 5 and the reinforced concrete beam type under the shallow layer reinforcement area 6, the support rail beam
The vertical consistency of structure 1；
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 bottom plate 2, with to the armored concrete support rail beam bottom plate 2
The transverse shifting of the armored concrete support rail beam bottom 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 the both sides of filler filling body 10 and be provided with the first weathering 11；
The lower end of the every first pile foundation bearing structure 3 sequentially passes through roadbed filling 5, the shallow-layer under the support rail beam
Stretched into after 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
Negative friction can be born by carrying structure 3, so as to be provided surely to armored concrete support rail beam bottom plate 2 and reinforced concrete beam type structure 1
Fixed bearing capacity, to reduce the sedimentation because of filler filling body 10 to vertical, the vertical and horizontal rigidity of armored concrete support rail beam 9
Caused adverse effect；
One end of the armored concrete support rail beam bottom plate 2 is overlapped on the bridge abutment 12, and both pass through pin
15 Connection Release longitudinal restraints are followed closely, and limit lateral displacement；
The both sides of one end that the armored concrete support rail beam bottom plate 2 is overlapped on the bridge abutment 12 set described respectively
Headwall 13, and the headwall 13 per side is abutted with the support rail beam both sides backfill filler 4 of respective side respectively, and institute is protected for gear
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 bottom plate 2, its with
Roadbed filling 5 abuts close to one end of the bridge abutment 12 under the support rail beam, is held for accepting the armored concrete
Beam-and-rail bottom 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 first pile foundation bearing structure 3 is cast-in-situ bored pile, reinforced concrete supporting beam 901 and reinforced concrete
The native rigid connection of support rail beam bottom plate 2 or overlap joint, with the rigid connection of the second pile foundation bearing structure 902.In the internode of armored concrete support rail beam 9 seam
Position reinforced concrete supporting beam 901 is overlapped with the armored concrete support rail beam bottom plate 2 using pin 15, and remaining position is using firm
Connect.
The height of the support rail beam both sides backfill filler 4 is equal with the height of the armored concrete support rail beam bottom plate 2, institute
These the described first pile foundation bearing structures 3 having are arranged in ranks.
Further, the trapezoidal filling body 14 mixes cement production systD, the armored concrete support rail beam bottom using graded broken stone
Plate 2, which is overlapped between one end of the bridge abutment 12 and the bridge abutment 12, is provided with wear-resisting sliding layer 16, the pin
15 include pre-buried connection reinforcing bar 15.1, pitch hemp cut 15.2 and stainless steel sleeve pipe 15.3, and the pre-buried connection reinforcing bar 15.1 is located at
The pitch hemp cut 15.2 is fixedly installed in the stainless steel sleeve pipe 15.3 and between the two.
The low circuit of putting of low speed magnetic suspension traffic engineering is tight to post-construction settlement of subgrade requirement during the structural shape can be solved effectively
Lattice, take traditional foundation stabilization measure caused by engineering is huge, investment is big, long in time limit, and basement process and embankment
Construction quality is whard to control, bedding long-time stability and the problem of poor durability, so as to improve low circuit support rail girder construction of putting
Reliability, reduce the engineering risk of traditional structure pattern.
The agent structure of armored concrete support rail beam 9 of the present invention uses reinforced concrete soil scene one-piece casting, reinforced concrete
The native girder structure of support rail beam 9, then will deadweight and top directly taking on the magnetic-levitation train load of track load and track transmission
Load passes to high with its rigidly connected first pile foundation bearing structure 3, structural reliability.First pile foundation bearing structure 3 uses
Reinforced concrete bored pile is made, and transverse direction and longitudinal direction is made up of multiple rows of reinforced concrete bored pile, vertical cross stiffness
Greatly；And the deep reliable supporting course 8 of pile foundation, embankment occurs to produce between certain sedimentation and armored concrete support rail beam 9 when coming to nothing, the
One pile foundation bearing structure 3 can still bear negative friction and provide stronger bearing capacity, have stronger longitudinal, vertical and horizontal
Stability.
One end of armored concrete support rail beam bottom plate 2 of armored concrete support rail beam 9 is overlapped on bridge abutment 12, and the two is logical
Cross pin 15 to connect, the releasable temperature stress in the longitudinal direction of pin 15, realize support rail beam stretching in longitudinal direction, laterally limit support rail beam
Displacement, improve 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, avoids bridge abutment 12 and low generation faulting of slab ends sedimentation between putting circuit support rail girder construction；It is low
Put the other end of circuit armored concrete support rail beam bottom plate 2 be embedded in it is stable it is low put in line construction, it is settled puts circuit with low
Structure is consistent, due to it is low put line construction through basement process and fill compacting after sedimentation value be in controlled range, therefore, reinforcing bar
Sedimentation between the both ends of concrete support rail beam 9 be located at bridge abutment 12 and it is low put line construction between, close to linear change, so as to
Overhead bridge structure and the low sedimentation transition put between line construction are realized, faulting of slab ends is it also avoid, changeover portion model has been effectively ensured
Enclose the ride comfort of F rails.
Wear-resisting sliding layer 16 is arranged between armored concrete support rail beam bottom plate 2 and bridge abutment 12, passes through 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
Constraint, and the dynamic stress that bridge abutment 12 is transferred to magnetic-levitation train plays cushioning effect, it also avoid armored concrete support rail beam 9
Abrasion and stress concentration between bridge abutment 12 cause the partial pressing of structure to destroy.
Adjacent armored concrete support rail beam bottom plate 2 shares pile foundation joist composite bearing structure, and in adjacent reinforcing bar
Expansion joint is reserved between concrete support rail beam bottom plate 2, impact failure of the section by train load of encorbelmenting can be avoided, and reduces temperature and answers
The influence of power and shrinkage and creep.
The reinforced concrete supporting beam 901 that first pile foundation bearing structure 3 and armored concrete support rail beam bottom plate 2 are set, can be with
Greatly reduce the stress concentration phenomenon of armored concrete support rail beam bottom plate 2 at pile foundation bearing structure；Further, since armored concrete
The lateral connection effect of joist 901, the lateral stiffness of structure and the ability of resistance differential settlement deformation are also increased, can be reduced
The quantity of transverse pile foundation, reduce investment.
It is low when putting circuit and passing through soft soil zone, should according to embankment stability need to carry out ground superficial layer it is necessary plus
Gu form shallow layer reinforcement area 6.The reinforcement depth in shallow layer reinforcement area 6 is controlled by embankment stability, and its reinforcement depth should be according to embankment
Raising, foundation condition are determined by stability calculation.Compared to by settling and stablizing traditional single ground during Two indices control
For reinforcing mode, the reinforcement depth of shallow layer reinforcement area 6 is small, with reference to the first pile foundation bearing structure 3 can effectively control roadbed reclamation and
Post-construction settlement of subgrade.By contrast, the new structure foundation stabilization quantity is small, and investment is small, and more conducively after construction quality and work
The control of sedimentation, and save cost and shorten the duration.
Specific making step of the invention is as follows：
(1) construction overhead bridge structure abutment, bridge abutment body concrete is poured, abutment of constructing, 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 according to design requirement at necessary shallow layer foundation reinforcing
Reason, after the completion of basement process, by changeover portion design requirement fill it is low after platform put geotechnique basis under circuit support rail beam, support rail beam after platform
The lower basic filling construction synchronous with abutment cone of geotechnique.According to each position wire feeding and compaction requirement, changeover portion when filling
Scope with non-changeover portion area is synchronous layered fills, next layer fills after detection meets the requirements and fills last layer again, until reinforcing bar mixes
At solidifying native support rail beam bottom plate bottom surface absolute altitude；
(3) in armored concrete support rail beam bottom plate bottom surface, absolute altitude is in embankment subgrade cross section, the construction of vertical section direction is bored
Hole pouring pile, i.e. the first pile foundation bearing structure 3, drilled pile construction should use and small construction technology disturbed to railway embankment, must
Steel pile casting is set in embankment altitude range when wanting or draws hole；, will by specification after cast-in-situ bored pile reaches desired strength
Ask amputation pile crown, assembling reinforcement concrete support rail beam bottom plate and the connection reinforcing bar with stake；
(4) according to design attitude to reinforced concrete supporting beam 901, the formwork erection of convex block machine 91, one-time-concreting shaping, before pouring
Carry out all kinds of built-in fittings such as pin 15 and positioning and installation with the connection reinforcing bar of pile foundation, concrete are removed after reaching design strength
Template；
(5) high-strength wearable sliding layer is laid on abutment in armored concrete support rail beam 9 and abutment overlap joint, according to design
Section length reaches design to armored concrete support rail beam bottom plate 2 and the merogenesis formwork erection of reinforced concrete beam type structure 1, each part concrete
After intensity distinguish form removal, one-time-concreting shaping, carried out before pouring all kinds of built-in fittings for example pin, sleeper pedestal connection reinforcing bar,
The positioning and installation of water conservancy diversion rail bearing built-in fitting etc.；
(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, wait the concrete of headwall 13 to reach form removal after design strength, then put circuit graded broken stone top by design requirement construction is low
Backfill layer, confining bed, the associated satellite structures in face, by design and construction cone top surface confining bed of 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 and construction of associated satellite engineering, construction finishes
Afterwards.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., all should be included
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 bottom 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 bottom plate；
The first pile foundation bearing structure is provided with more, and the every first pile foundation bearing structure is vertically arranged, and often
Accept the armored concrete support rail beam bottom plate, the first pile foundation carrying knot in the top of first pile foundation bearing structure described in root
The top of structure is embedded in the armored concrete support rail beam bottom plate and its rigid connection；
The reinforced concrete beam type structure is accepted at the top of the armored concrete support rail beam bottom plate, and described in two adjacent sections
Expansion joint is reserved between armored concrete support rail beam bottom plate；
The pile foundation joist composite bearing structure setting has the two multiple and adjacent section armored concrete support rail beam bottom plates
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 bottom plate, each pile foundation joist composite bearing structure include reinforced concrete supporting beam and the second pile foundation carrying knot
Structure, and the reinforced concrete supporting beam, the armored concrete are accepted in the top of the every second pile foundation bearing structure
Joist accepts the armored concrete support rail beam bottom plate；
The top of the second pile foundation bearing structure is embedded in the reinforced concrete supporting beam and its rigid connection, the armored concrete support
Beam and the armored concrete support rail beam bottom plate rigid connection or overlap joint, the armored concrete support rail beam bottom plate and the reinforced concrete
Native girder structure formed by integrally casting is molded 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 bottom plate lateral displacement
Type block machine；
Accept the reinforced concrete beam type structure, and first pile foundation in the top of the armored concrete support rail beam bottom plate
The top of bearing structure is embedded in the armored concrete support rail beam bottom plate and its rigid connection, the armored concrete support rail beam bottom plate with
The reinforced concrete beam type structural integrity pouring molding is so as to collectively forming armored concrete support rail beam；
Roadbed filling is arranged between shallow layer reinforcement area and the armored concrete support rail beam bottom plate under the support rail beam, for
Filler is backfilled for the armored concrete support rail beam bottom plate, reinforced concrete supporting beam and support rail beam both sides, and construction platform is provided, and
Lateral support is provided for the first pile foundation bearing structure；Wherein, the shallow layer reinforcement area is arranged on the superficial floor of soft stratum,
And roadbed filling and the vertical consistency of 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 the support rail beam both sides backfill
Filler props up the both sides of the armored concrete support rail beam bottom plate, to be shielded to the armored concrete support rail beam bottom plate
And the transverse shifting of the constraint armored concrete support rail beam bottom 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, and the filler is filled out
Building body both sides are provided with the first weathering；
The lower end of the every first pile foundation bearing structure sequentially passes through roadbed filling under the support rail beam, the shallow layer reinforcement area
Stretched into after the soft stratum in supporting course, so that when soft stratum produces sedimentation, the first pile foundation bearing structure can be held
By negative friction, so that stable bearing capacity is provided to armored concrete support rail beam bottom plate and reinforced concrete beam type structure, with
The sedimentation because of filler filling body is reduced to adverse effect caused by the vertical of armored concrete support rail beam, vertical and horizontal rigidity；
One end of the armored concrete support rail beam bottom 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 bottom plate is overlapped on the bridge abutment set the headwall respectively, and
And the headwall per side is abutted with the support rail beam both sides backfill filler of respective side respectively, and the support rail beam both sides are protected for gear
Backfill filler；
The trapezoidal filling body is arranged between shallow layer reinforcement area and the armored concrete support rail beam bottom plate, itself and the support rail
Roadbed filling abuts close to one end of the bridge abutment under beam, for accepting the armored concrete support rail beam bottom 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 cast-in-situ bored pile, reinforced concrete supporting beam and armored concrete support rail beam bottom
Plate rigid connection or overlap joint, with the second pile foundation bearing structure rigid connection.
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 adopted in the position reinforced concrete supporting beam of armored concrete support rail beam internode seam with armored concrete support rail beam bottom plate
Overlapped with pin, remaining position uses rigid connection.
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 equal with the height of the armored concrete support rail beam bottom 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, all these described first pile foundation bearing structures are arranged in ranks.
6. 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 trapezoidal filling body mixes cement production systD using graded broken stone.
7. 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 armored concrete support rail beam bottom plate is overlapped between one end of the bridge abutment and the bridge abutment and set
It is equipped with wear-resisting sliding layer.
8. 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 pin includes pre-buried connection reinforcing bar, pitch hemp cut and stainless steel sleeve pipe, and the pre-buried connection reinforcing bar is located at institute
State in stainless steel sleeve pipe and the pitch hemp cut is set between the two.
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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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| DE102005057380B4 (en) * | 2005-11-30 | 2009-12-03 | Walter Sobolewski | Tubular, hollow, solid track carrier |
| 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 |
| CN203546524U (en) * | 2013-09-29 | 2014-04-16 | 中铁二院工程集团有限责任公司 | Medium-and-low-speed magnetically-suspended traffic integral-type road-bed track structure |
| CN104480803B (en) * | 2014-12-11 | 2017-01-11 | 中铁第四勘察设计院集团有限公司 | Medium-and-low speed magnetic levitation railway low route continuous arched supporting rail beam structure and construction method |
| CN105887587B (en) * | 2016-04-29 | 2017-06-13 | 中铁第四勘察设计院集团有限公司 | A kind of low circuit switch area of putting of medium-and low-speed maglev is with non-switch area transition section structure |
| CN206157487U (en) * | 2016-09-15 | 2017-05-10 | 中铁第四勘察设计院集团有限公司 | Moderate -low speed magnetic levitation single line location pile foundation combined type support rail roof beam transition section structure that fills |
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