CN106283946A - Medium-and low-speed maglev two-wire excavation location pile foundation is combined framing type support rail beam transition section structure - Google Patents
Medium-and low-speed maglev two-wire excavation location pile foundation is combined framing type support rail beam transition section structure Download PDFInfo
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- CN106283946A CN106283946A CN201610824960.9A CN201610824960A CN106283946A CN 106283946 A CN106283946 A CN 106283946A CN 201610824960 A CN201610824960 A CN 201610824960A CN 106283946 A CN106283946 A CN 106283946A
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- support rail
- rail beam
- pile foundation
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- armored concrete
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
- E01B2/006—Deep foundation of tracks
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/08—Deep or vertical foundation
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Abstract
The invention belongs to that middle low speed magnetic suspension traffic engineering is low puts Line technology field, and disclose medium-and low-speed maglev two-wire excavation location pile foundation and be combined framing type support rail beam transition section structure, including the first pile foundation carrying structure, pile foundation joist composite bearing structure, two placing of reinforcement concrete support rail beam base plates, two placing of reinforcement concrete beam-type structures, support rail beam both sides backfill filler, bridge abutment and headwall, the first pile foundation carrying structure is provided with many；Reinforced concrete beam type structure is accepted on the top of armored concrete support rail beam base plate；Being provided with first row ditch by support rail beam both sides backfill filler, first row ditch is provided with weathering away from the side of support rail beam both sides backfill filler.Long-time stability of the present invention are more preferable, both met the deformation of support rail girder construction and the high request of settlement after construction, meet again the requirement of the controllability of bedding long-time stability, durability and construction quality, effectively realize magnetic suspension elevated structure and the low smoothly transition putting line transition section F rail.
Description
Technical field
The invention belongs to that middle low speed magnetic suspension traffic engineering is low puts Line technology field, more particularly, to middle low speed magnetic
Floating two-wire excavation location pile beam-and-rail transition section structure pattern.
Background technology
Middle low speed magnetic suspension track traffic belongs to a kind of novel traffic mode, and achievement in research both domestic and external is less, the whole world
Open the circuit minority especially of operation.The middle low speed magnetic suspension railway business fortune that the most only in March, 2005, Japan's construction was opened
The middle low speed magnetic suspension railway business operating line that line-the East Hillside Line and in June, 2014, Korea S opened.And the middle low speed of China
Magnetic suspension traffic only National University of Defense technology's test wire, Green City Mountain test wire, Tangshan experiment line at present, but do not put into effect
Formal circuit, and all based on elevated structure, rarely seen relevant elevated structure and the low research put in terms of line transition segment structure and
Application.
In wheel rail high speed railway, there is substantial amounts of bridge changeover portion roadbed, high-speed railway changeover portion roadbed uses mostly
Trapezium structure, have employed cement stabilized graded macabam in trapezoidal scope and fills, and have employed than the non-higher compacting of changeover portion roadbed
Requirement.During built high-speed railway operation, bridge changeover portion scope, often there is non-fragment orbit protuberance, gap, grout
Etc. disease.The reason of this disease, is owing to changeover portion roadbed remains by the earth structure of rock and soil constitution, changeover portion mostly
After roadbed is laid a railway track, still can occur necessarily to settle, there is poor (the specification permission settlement after construction of certain settlement after construction with bridge abutment
Difference is not more than 5mm), owing to high-speed railway uses seamless track steel rail, in the range of specification allows settlement after construction difference, have no effect on
Normal operation, but the diseases such as non-fragment orbit protuberance, gap, grout can be caused, need timely repair and maintenance.
The F rail of medium-and low-speed maglev traffic line is to be used fishplate bar scene to be spliced by a short rail successively, and leaves between rail
Seam, meets the ride comfort of the F rail of magnetic-levitation train even running requirement, and under rail to be leaned on, works ensures.Low put circuit location,
Under support rail beam, basis is by the earth structure of rock and soil constitution, is affected by the factor such as landform, geological conditions, and quality is the most easily-controllable
System, is easily generated differential settlement under load and various factor of natural environment effect, can occur unavoidably and elevated structure bridge bridge
The settlement after construction that platform is inconsistent, produces settlement after construction poor, and low circuit of putting occurs in that differential settlement with bridge abutment position, necessarily affects
The ride comfort of F rail, in some instances it may even be possible to cause F rail to produce the problem such as faulting of slab ends, deformation, time serious, will affect the normal fortune of maglev vehicle
Battalion.
Summary of the invention
For disadvantages described above or the Improvement requirement of prior art, the invention provides medium-and low-speed maglev two-wire excavation location stake
Base is combined framing type support rail beam transition section structure, can avoid the low defect putting circuit support rail girder construction of tradition, and construction quality is more held
During easy to control, long-time stability are more preferable, and it both meets, support rail girder construction is become by low speed magnetic suspension traffic engineering track structure
Shape and the high requirement of settlement after construction, meet again bedding long-time stability, durability and the requirement of construction quality controllability.
For achieving the above object, the invention provides medium-and low-speed maglev two-wire excavation location pile foundation and be combined framing type support rail beam
Transition section structure, it is characterised in that include the first pile foundation carrying structure, pile foundation joist composite bearing structure, two placing of reinforcement coagulations
Soil support rail beam base plate, two placing of reinforcement concrete beam-type structures, support rail beam both sides backfill filler, bridge abutment and headwall, wherein,
Described first pile foundation carrying structure and described pile foundation joist composite bearing structure accept described armored concrete jointly
Support rail beam base plate；
Described first pile foundation carrying structure is provided with many, and every described first pile foundation carrying structure is all vertically arranged, and
And every described first pile foundation carrying structure top all accept described armored concrete support rail beam base plate, described first pile foundation is held
The top described armored concrete support rail beam base plate of embedding carrying structure just connects with it；
Reinforced concrete beam type structure described in two rows is accepted at the top of described armored concrete support rail beam base plate, and often arranges
In armored concrete support rail beam base plate, reserved expansion joint between armored concrete support rail beam base plate described in two adjacent sections；
Described pile foundation joist composite bearing structure is provided with multiple, and in every placing of reinforcement concrete support rail beam base plate, phase
It is respectively provided with pile foundation joist composite bearing structure described at the expansion joint of the two adjacent described armored concrete support rail beam base plates of joint, with
For supporting this two adjacent described armored concrete support rail beam base plates of joint, each described pile foundation joist composite bearing structure is all wrapped
Include reinforced concrete supporting beam and the second pile foundation carrying structure, and institute is all accepted on the top of every described second pile foundation carrying structure
Stating reinforced concrete supporting beam, described reinforced concrete supporting beam accepts described armored concrete support rail beam base plate；
The top of described second pile foundation carrying structure embeds described reinforced concrete supporting beam and just connects with it, described reinforced concrete
Soil joist has just connect with described armored concrete support rail beam base plate or has overlapped；
Described in two rows, between armored concrete support rail beam base plate, filler between support rail beam is set；
Arranging wired weathering section described in two rows between reinforced concrete beam type structure, between described line, weathering section has
Cross fall and head fall, for current are introduced two adjacent sections armored concrete support rail beam base plate internode expansion joint and then
Current are discharged；
Described armored concrete support rail beam base plate and described reinforced concrete beam type structural integrity thereon pour molding, from
And collectively form armored concrete support rail beam；
Described in two rows, between armored concrete support rail beam base plate, filler between support rail beam is set；
Described support rail beam both sides backfill filler is arranged on soft stratum, and by described support rail beam both sides backfill filler
Being provided with first row ditch, described first row ditch is provided with weathering away from the side of described support rail beam both sides backfill filler；
Described armored concrete support rail beam base plate is positioned at described support rail beam both sides backfill filler；
The lower end of every described first pile foundation carrying structure is stretched in supporting course, with in weakness after described soft stratum
When stratum produces sedimentation, described first pile foundation carrying structure can bear negative friction, thus to concrete-steel reinforced concrete support rail beam
There is provided stable bearing capacity, in case the differential settlement of support rail beam both sides backfill filler reduces the perpendicular of armored concrete support rail beam
The adverse effect produced to, vertical and horizontal rigidity；
One end of described armored concrete support rail beam base plate is overlapped on described bridge abutment, and both are by pin even
Connect release longitudinal restraint, and limit lateral displacement；
The both sides of one end that described armored concrete support rail beam base plate is overlapped on described bridge abutment are respectively provided with described end
Wall, and the headwall of described every side backfills filler with the support rail beam both sides of respective side respectively and abuts, and protects described support rail for gear
Beam both sides backfill filler；
Being provided with second row ditch by described headwall, described second row ditch is provided with second away from the side of described headwall
Weathering.
Preferably, described first pile foundation carrying structure is cast-in-situ bored pile, and reinforced concrete supporting beam is firm with support rail beam base plate
Connect or overlap, just connect with pile foundation carrying structure.
Preferably, described in all these, the first pile foundation carrying structure is ranks arrangements.
Preferably, between described line, the cross fall of weathering section is 3%～5%, and head fall is not less than 2 ‰.
Preferably, described armored concrete support rail beam base plate is overlapped on one end of described bridge abutment and described bridge abutment
Between be provided with wear-resisting sliding layer.
Preferably, described pin includes pre-buried connection reinforcing bar, Colophonium hemp cut and rustless steel sleeve pipe, described pre-buried connection reinforcing bar
It is positioned at described rustless steel sleeve pipe and is fixedly installed described Colophonium hemp cut between the two.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it is possible to show under acquirement
Benefit effect:
(1) the armored concrete support rail beam base plate of the present invention, reinforced concrete beam type structure all use armored concrete existing
Field one-piece casting, the two composition integral reinforced concrete structure is in order to directly take on track load and the magnetic-levitation train of track transmission
Load, then deadweight and upper load are passed to first pile foundation carrying structure rigidly connected with it, structural reliability is high.
(2) the first pile foundation carrying structure of the present invention is goed deep in supporting course, and roadbed produces when necessarily settling, and the first pile foundation is held
Carry structure still to bear negative friction and stronger bearing capacity is provided, it is to avoid cause because foundation stabilization quality is wayward
The differential settlement impact on support rail beam vertical and horizontal rigidity, structure vertical cross stiffness is more excellent.
(3) the first pile foundation carrying structure control effect of settling of the present invention is preferable, therefore can reduce cutting bedding and change and fill out thickness
Degree, only need to meet the requirement of basic replacement thickness, can investment reduction, the reduction of erection time, there are obvious technology and economic advantages.
(4) reinforced concrete supporting beam that pile foundation carrying structure and reinforced concrete floor are arranged, can be greatly reduced pile foundation
The stress concentration phenomenon of armored concrete support rail beam base plate at carrying structure；Further, since the lateral connection effect of joist, also increase
Add lateral stiffness and the ability of opposing differential settlement deformation of structure, the quantity of transverse pile foundation can have been reduced, reduce investment.
(5) adjacent armored concrete support rail beam base plate shares pile foundation joist composite bearing structure, and at adjacent steel
Reserved expansion joint between reinforced concrete support rail beam base plate, can avoid the section of encorbelmenting by the impact failure of train load, and reduce temperature
Stress and the impact of shrinkage and creep.
(6) armored concrete support rail beam base plate is overlapped on bridge abutment near one end of elevated bridge, passes through pin
Connect, it is to avoid the sedimentation faulting of slab ends that causes because of measures of foundation treatment difference between the two, it is ensured that magnetic float F rail low put circuit with
Bridge abutment connected position will not produce faulting of slab ends, effectively realizes magnetic suspension traffic engineering elevated structure and puts line transition section F with low
The smoothly transition of rail.
(7) i.e. divide two rows to arrange by framing type setting armored concrete support rail beam base plate, can avoid making at train load
It is in multi-direction bending deformation and complex stress condition, the support rail beam increasingly complex compared to tradition stress with lower support rail beam base plate
Right, framing pile foundation joist type support rail beam can reduce buckling deformation to support rail beam base plate and the impact of top girder structure.
Accompanying drawing explanation
Fig. 1 is the schematic longitudinal section of the present invention；
Fig. 2 is the profile in Fig. 1 along I-I line；
Fig. 3 is the profile in Fig. 1 along II-II line；
Fig. 4 is that in the present invention, armored concrete support rail beam base plate is overlapped on the schematic diagram on bridge abutment；
Fig. 5 is that pile foundation joist of the present invention has just connect connection diagram with armored concrete support rail beam base plate.
Fig. 6 is that pile foundation joist of the present invention overlaps connection diagram with armored concrete support rail beam base plate.
Fig. 7 is the cross sectional representation of pin in the present invention.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.If additionally, technical characteristic involved in each embodiment of invention described below
The conflict of not constituting each other just can be mutually combined.
With reference to Fig. 1～Fig. 7, medium-and low-speed maglev two-wire excavation location pile foundation is combined framing type support rail beam transition section structure, bag
Include the first pile foundation carrying structure 3, pile foundation joist composite bearing structure 90, two placing of reinforcement concrete support rail beam base plate 2, two placing of reinforcement
Concrete beam-type structure 1, support rail beam both sides backfill filler 4, bridge abutment 12 and headwall 13, wherein,
Described first pile foundation carrying structure 3 and described pile foundation joist composite bearing structure 90 accept described reinforced concrete jointly
Soil support rail beam base plate 2；
Described first pile foundation carrying structure 3 is provided with many, and every described first pile foundation carrying structure 3 is all vertically arranged,
And described armored concrete support rail beam base plate 2 is all accepted on the top of every described first pile foundation carrying structure 3, described first
The top of base carrying structure 3 embeds described armored concrete support rail beam base plate 2 and just connects with it；
Reinforced concrete beam type structure 1 described in two rows is accepted at the top of described armored concrete support rail beam base plate 2, and often
In placing of reinforcement concrete support rail beam base plate 2, described in two adjacent sections, between armored concrete support rail beam base plate 2, expansion joint is set；
Described pile foundation joist composite bearing structure 90 is provided with multiple, and in every placing of reinforcement concrete support rail beam base plate 2,
It is respectively provided with pile foundation joist composite bearing structure described at the expansion joint of the two adjacent described armored concrete support rail beam base plates 2 of joint
90, for supporting this two adjacent described armored concrete support rail beam base plates 2 of joint, each described pile foundation joist composite bearing is tied
Structure 90 all includes reinforced concrete supporting beam 901 and the second pile foundation carrying structure 902, and every described second pile foundation carrying structure
Described reinforced concrete supporting beam 901 is all accepted on the top of 902, and described reinforced concrete supporting beam 901 accepts described armored concrete
Support rail beam base plate 2；
The top of described second pile foundation carrying structure 902 embeds described reinforced concrete supporting beam 901 and just connects with it, described steel
Reinforced concrete joist 901 has just connect with described armored concrete support rail beam base plate 2 or has overlapped；
Filler 21 between support rail beam is set between armored concrete support rail beam base plate 2 described in two rows；
Described support rail beam both sides backfill filler 4 is accepted by roadbed filling 5 under described support rail beam, and described support rail beam two
Side backfill filler 4 props up the both sides of described armored concrete support rail beam base plate 2, with to described armored concrete support rail beam base plate 2
Shield and retrain the transverse shifting of described armored concrete support rail beam base plate 2, and maintenance passage is provided；
Described reinforced concrete supporting beam 901 both sides are provided with for limiting described armored concrete support rail beam base plate 2 horizontal
The convex gear platform 91 of displacement；
Described armored concrete support rail beam base plate 2 and described reinforced concrete beam type structure 1 formed by integrally casting molding thereon,
Thus collectively form armored concrete support rail beam 9；
Described support rail beam both sides backfill filler 4 is arranged on soft stratum 5, and backfills filler in described support rail beam both sides
4 sides are provided with first row ditch 7, and described first row ditch 7 is provided with row away from the side of described support rail beam both sides backfill filler 4
Water slope 8；
Described armored concrete support rail beam base plate 2 is positioned at described support rail beam both sides backfill filler 4；
The lower end of every described first pile foundation carrying structure 3 through stretching in supporting course 6 after described soft stratum 5, with
When soft stratum 5 produces sedimentation, described first pile foundation carrying structure 3 can bear negative friction, thus to concrete-steel reinforced concrete
Support rail beam 9 provides stable bearing capacity, in case the differential settlement of support rail beam both sides backfill filler 4 reduces armored concrete support rail
The adverse effect that vertical, the vertical and horizontal rigidity of beam 9 produces；
One end of described armored concrete support rail beam base plate 2 is overlapped on described bridge abutment 12, and both pass through pin
Follow closely 15 Connection Release longitudinal restraints, and limit lateral displacement；
The both sides of one end that described armored concrete support rail beam base plate 2 is overlapped on described bridge abutment 12 are respectively provided with described
Headwall 13, and the headwall 13 of described every side backfills filler 4 with the support rail beam both sides of respective side respectively and abuts, and protects institute for gear
State support rail beam both sides backfill filler 4；
Described headwall 13 is other is provided with second row ditch 17, and described second row ditch 17 sets away from the side of described headwall 13
It is equipped with the second weathering 18.
Further, described first pile foundation carrying structure 3 is cast-in-situ bored pile, and joist 90 has just connect with support rail beam 9 base plate 2 or taken
Connect, just connect with pile foundation carrying structure 3.Position joist 90 at support rail beam internode seam uses pin 15 to take with support rail beam 9 base plate 2
Connecing, remaining position uses and just connects.
Described in all these, the first pile foundation carrying structure 3 is arranged in ranks.
Further, described armored concrete support rail beam base plate 2 is overlapped on one end of described bridge abutment 12 and described bridge
Being provided with wear-resisting sliding layer 16 between abutment 12, described pin 15 includes pre-buried connection reinforcing bar 15.1, Colophonium hemp cut 15.2 and not
Rust steel thimble 15.3, described pre-buried connection reinforcing bar 15.1 is positioned at described rustless steel sleeve pipe 15.3 and is fixedly installed between the two
Described Colophonium hemp cut 15.2.
This structural shape can effectively solve in low speed magnetic suspension traffic engineering low to put circuit tight to post-construction settlement of subgrade requirement
Lattice, engineering that replacement thickness causes greatly is huge, it is big, long in time limit to invest to take traditional cutting to excavate, and backfill filler construction
Quality is wayward, bedding long-time stability and the problem of poor durability, thus improves and low put the reliable of circuit support rail girder construction
Degree, reduces engineering risk.
The armored concrete support rail beam 9 of the present invention uses reinforced concrete soil scene one-piece casting, to directly take on track lotus
Carry and the magnetic-levitation train load of track transmission, then deadweight and upper load are passed to first pile foundation carrying rigidly connected with it
Structure 3, structural reliability is high, can reduce cutting bedding replacement thickness, only need to meet the requirement of basic replacement thickness, can save throwing
Money, the reduction of erection time, has obvious technology and economic advantages.
First pile foundation carrying structure 3 uses cast-in-situ bored pile, transverse direction and longitudinal direction to have and is arranged with many reinforced concrete drills
Hole pouring pile, vertical and horizontal rigidity is big；And first pile foundation carrying structure 3 go deep into supporting course 6, when soft stratum 5 produces sedimentation,
Pile foundation carrying knot still can bear negative friction and provide stronger bearing capacity to armored concrete support rail beam base plate 2.
Armored concrete support rail beam base plate 2 one end of armored concrete support rail beam 9 is overlapped on bridge abutment 12, and the two leads to
Cross pin 15 to connect, the most releasable temperature stress of pin 15, it is achieved support rail beam stretches longitudinal, laterally limits support rail beam
Displacement, improves the lateral stability of structure.One end of support rail beam overlaps with bridge abutment 12, makes low to put circuit support rail beam and bridge
The sedimentation of abutment 12 lap position is consistent, it is to avoid bridge abutment 12 and low putting produce faulting of slab ends sedimentation between circuit support rail girder construction；Low
Putting circuit armored concrete support rail beam base plate 2 other end to be embedded in and stable low put in line construction, its sedimentation puts circuit with low
Structure is consistent, due to low put line construction through basement process and after filling compacting sedimentation value be in controlled range, therefore, support rail
Sedimentation between beam two ends is at bridge abutment 12 and low puts between line construction, close to linear change, it is achieved thereby that overhead
Bridge structure and the low sedimentation transition put between line construction, it also avoid faulting of slab ends, the smooth-going of changeover portion scope F rail be effectively ensured
Property.
Wear-resisting sliding layer 16 is arranged between armored concrete support rail beam base plate 2 and bridge abutment 12, by resistance to mill sliding
The effect of layer 16, can release the rotation that support rail beam is likely to occur under the load action such as relative settlement, temperature to a certain extent
Retrain, and the dynamic stress that magnetic-levitation train is transferred to bridge abutment 12 plays cushioning effect, it also avoid support rail beam and bridge abutment
Abrasion and stress between 12 are concentrated and are caused the partial pressing of structure to destroy.
Adjacent armored concrete support rail beam base plate 2 shares pile foundation joist composite bearing structure, and at adjacent reinforcing bar
Reserved expansion joint between concrete support rail beam base plate 2, can avoid the section of encorbelmenting by the impact failure of train load, and reduce temperature should
Power and the impact of shrinkage and creep.
The reinforced concrete supporting beam 90 that pile foundation carrying structure 3 and reinforced concrete floor 2 are arranged, can be greatly reduced pile foundation
The stress concentration phenomenon of armored concrete support rail beam base plate 2 at carrying structure；Further, since the lateral connection effect of joist, also
Add lateral stiffness and the ability of opposing differential settlement deformation of structure, the quantity of transverse pile foundation can be reduced, reduce investment.
Being arranged by framing type by armored concrete support rail beam base plate 2 i.e. divides two rows to arrange, and can avoid at High-speed Train Loads
Under compared to the tradition increasingly complex support rail beam of stress for, framing pile foundation joist type support rail beam can reduce buckling deformation to support rail
Beam base plate and the impact of top beam type 1 structure.
The making step that the present invention is concrete is as follows:
(1) construction overhead bridge structure abutment, pours bridge abutment body concrete, abutment of constructing, and backfills abutment foundation foundation ditch；
The location of pin should be performed before abutment concreting and bury work underground；
(2) excavating cut slope side slope is to designing at road bed absolute altitude, requires that the bedding carrying out necessity changes according to design and fills out；Ground
After process completes, low after filling platform by changeover portion design requirement put under circuit support rail beam geotechnique basis, geotechnique under platform consequence beam-and-rail
Basis filling construction Tong Bu with abutment cone.According to each position wire feeding and compaction requirement when filling, changeover portion scope with
Non-changeover portion district is synchronous layered fills, and next layer fills and fills last layer after detection meets the requirements again, until armored concrete holds
At the absolute altitude of beam-and-rail base plate bottom surface；
(3) it is in subgrade cross section, vertical section direction construction drill bored concrete pile at reinforced concrete floor bottom surface absolute altitude, i.e.
First pile foundation carrying structure 3, drilled pile construction should use the construction technology little to the most filling roadbed disturbance；Reach at cast-in-situ bored pile
After desired strength, amputate pile crown, colligation concrete floor and the connection reinforcing bar with stake by code requirement；
It is (3) long to armored concrete support rail beam base plate 2 and reinforced concrete beam type structure 1 merogenesis formwork erection according to design joint,
One-time-concreting molding, carries out all kinds of built-in fitting such as sleeper pedestal and connects the location of reinforcing bar, water conservancy diversion rail bearing built-in fitting etc. before pouring
With installation；
(4) according to design attitude to reinforced concrete supporting beam 90, convex gear platform 91 formwork erection, one-time-concreting molding, before pouring
Carry out all kinds of built-in fitting such as pin 10 and with pile foundation connect the location of reinforcing bar and installation, concrete is removed after reaching design strength
Template；
It is (5) long to armored concrete support rail beam base plate 2 and reinforced concrete beam type structure 1 merogenesis formwork erection according to design joint,
Intilted weathering is made in the face that backfills between reinforced concrete beam type structure and to carry out top layer waterproof by design requirement, once waters
Build up type, carry out before pouring all kinds of built-in fitting such as pin, sleeper pedestal connect reinforcing bar, water conservancy diversion rail bearing built-in fitting etc. location with
Install；
(6) constructing and low put both sides, circuit bridge abutment 12 joint headwall 13, headwall 13 uses concrete one-piece casting to execute
Work, waits headwall 13 concrete to reach form removal after design strength, then puts circuit graded broken stone top by design requirement construction is low
The backfill layer in face, confining bed, associated satellite structures, by design and construction bridge abutment 12 cone end face confining bed etc., limit of constructing
Slope protection, drainage system etc..
(7) carry out low circuit and the elevated structure section of track put to lay and the installation of associated satellite engineering and construction, construct complete
After.
As it will be easily appreciated by one skilled in the art that and the foregoing is only presently preferred embodiments of the present invention, not in order to
Limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, all should comprise
Within protection scope of the present invention.
Claims (7)
1. medium-and low-speed maglev two-wire excavation location pile foundation is combined framing type support rail beam transition section structure, it is characterised in that include
One pile foundation carrying structure, pile foundation joist composite bearing structure, two placing of reinforcement concrete support rail beam base plates, two placing of reinforcement beams of concretes
Formula structure, support rail beam both sides backfill filler, bridge abutment and headwall, wherein,
Described first pile foundation carrying structure and described pile foundation joist composite bearing structure accept described armored concrete support rail jointly
Beam base plate；
Described first pile foundation carrying structure is provided with many, and every described first pile foundation carrying structure is all vertically arranged, and often
Described armored concrete support rail beam base plate, described first pile foundation carrying knot are all accepted in the top of the first pile foundation carrying structure described in root
The top of structure embeds described armored concrete support rail beam base plate and just connects with it；
Reinforced concrete beam type structure described in two rows, and every placing of reinforcement are accepted in the top of described armored concrete support rail beam base plate
In concrete support rail beam base plate, described in two adjacent sections, between armored concrete support rail beam base plate, expansion joint is set；
Described pile foundation joist composite bearing structure is provided with multiple, and in every placing of reinforcement concrete support rail beam base plate, adjacent
It is respectively provided with described pile foundation joist composite bearing structure, for propping up at two expansion joints saving described armored concrete support rail beam base plate
Supportting this two adjacent described armored concrete support rail beam base plates of joint, each described pile foundation joist composite bearing structure all includes reinforcing bar
Concrete joist and the second pile foundation carry structure, and described reinforcing bar is all accepted on the top of every described second pile foundation carrying structure
Concrete joist, described reinforced concrete supporting beam accepts described armored concrete support rail beam base plate；
The top of described second pile foundation carrying structure embeds described reinforced concrete supporting beam and just connects with it, described armored concrete torr
Beam has just connect with described armored concrete support rail beam base plate or has overlapped；
Described in two rows, between armored concrete support rail beam base plate, filler between support rail beam is set；
Arranging wired weathering section described in two rows between reinforced concrete beam type structure, between described line, weathering section has laterally
The gradient and head fall, for current introducing two adjacent sections armored concrete support rail beam base plate internode expansion joint and then by water
Stream is discharged；
The convex for limiting described armored concrete support rail beam base plate lateral displacement it is provided with on described reinforced concrete supporting beam
Gear platform；
Described armored concrete support rail beam base plate and described reinforced concrete beam type structural integrity thereon pour molding, thus are total to
With constituting armored concrete support rail beam；
Described support rail beam both sides backfill filler is arranged on soft stratum, and in the other setting of backfill filler of described support rail beam both sides
Having first row ditch, described first row ditch is provided with weathering away from the side of described support rail beam both sides backfill filler；
Described armored concrete support rail beam base plate is positioned at described support rail beam both sides backfill filler；
The lower end of every described first pile foundation carrying structure is stretched in supporting course, with at soft stratum after described soft stratum
When producing sedimentation, described first pile foundation carrying structure can bear negative friction, thus provides to concrete-steel reinforced concrete support rail beam
Stable bearing capacity, in case the differential settlement of support rail beam both sides backfill filler reduces the vertical, vertical of armored concrete support rail beam
To the adverse effect produced with lateral stiffness；
One end of described armored concrete support rail beam base plate is overlapped on described bridge abutment, and both are released by pin connection
Put longitudinal restraint, and limit lateral displacement.
Medium-and low-speed maglev two-wire excavation location the most according to claim 1 pile foundation is combined framing type support rail beam changeover portion knot
Structure, it is characterised in that described first pile foundation carrying structure is cast-in-situ bored pile, and reinforced concrete supporting beam just connects with support rail beam base plate
Or overlap joint, just connect with pile foundation carrying structure.
Medium-and low-speed maglev two-wire excavation location the most according to claim 1 pile foundation is combined framing type support rail beam changeover portion knot
Structure, it is characterised in that position reinforced concrete supporting beam and support rail beam base plate at support rail beam internode seam use pin overlap joint, remaining
Position uses and has just connect or overlapped.
Medium-and low-speed maglev two-wire excavation location the most according to claim 1 pile foundation is combined framing type support rail beam changeover portion knot
Structure, it is characterised in that described in all these, the first pile foundation carrying structure is ranks arrangements.
Medium-and low-speed maglev two-wire excavation location the most according to claim 1 pile foundation is combined framing type support rail beam changeover portion knot
Structure, it is characterised in that between described line, the cross fall of weathering section is 3%～5%, head fall is not less than 2 ‰.
Medium-and low-speed maglev two-wire excavation location the most according to claim 1 pile foundation is combined framing type support rail beam changeover portion knot
Structure, it is characterised in that described armored concrete support rail beam base plate is overlapped on one end of described bridge abutment and described bridge abutment
Between be provided with wear-resisting sliding layer.
Medium-and low-speed maglev two-wire excavation location the most according to claim 1 pile foundation is combined framing type support rail beam changeover portion knot
Structure, it is characterised in that described pin includes pre-buried connection reinforcing bar, Colophonium hemp cut and rustless steel sleeve pipe, described pre-buried connection reinforcing bar
It is positioned at described rustless steel sleeve pipe and is fixedly installed described Colophonium hemp cut between the two.
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| CN201610824960.9A CN106283946B (en) | 2016-09-15 | 2016-09-15 | The compound framing type support rail beam transition section structure of medium-and low-speed maglev two-wire excavation location pile foundation |
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| CN201610824960.9A CN106283946B (en) | 2016-09-15 | 2016-09-15 | The compound framing type support rail beam transition section structure of medium-and low-speed maglev two-wire excavation location pile foundation |
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| CN106283946B (en) | 2017-11-17 |
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