CN106283946B - The compound framing type support rail beam transition section structure of medium-and low-speed maglev two-wire excavation location pile foundation - Google Patents
The compound framing type support rail beam transition section structure of medium-and low-speed maglev two-wire excavation location pile foundation Download PDFInfo
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- CN106283946B CN106283946B CN201610824960.9A CN201610824960A CN106283946B CN 106283946 B CN106283946 B CN 106283946B CN 201610824960 A CN201610824960 A CN 201610824960A CN 106283946 B CN106283946 B CN 106283946B
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- support rail
- rail beam
- pile foundation
- bottom plate
- armored concrete
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Classifications
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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
-
- 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
-
- 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
Abstract
Line technology field is put the invention belongs to middle low speed magnetic suspension traffic engineering is low, and disclose the compound framing type support rail beam transition section structure of medium-and low-speed maglev two-wire excavation location pile foundation, first pile foundation bearing structure, pile foundation joist composite bearing structure, two placing of reinforcement concrete support rail beam bottom plates, two placing of reinforcement concrete beam-type structures, support rail beam both sides backfill filler, bridge abutment and headwall, the first pile foundation bearing structure are provided with more；Accept reinforced concrete beam type structure in the top of armored concrete support rail beam bottom plate；The first gutter is provided with by support rail beam both sides backfill filler, side of first gutter away from support rail beam both sides backfill filler is provided with weathering.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 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
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 two-wire excavation location stake
The compound framing type support rail beam transition section structure of base, traditional low the defects of putting circuit support rail girder construction can be avoided, construction quality is more held
Easy to control, long-time stability are more preferable, and its both meet in low speed magnetic suspension traffic engineering track structure to support rail girder construction become
Shape and the high requirement of settlement after construction, meet the requirement of bedding long-time stability, durability and construction quality controllability again.
To achieve the above object, the invention provides the compound framing type support rail beam of medium-and low-speed maglev two-wire excavation location pile foundation
Transition section structure, it is characterised in that including the first pile foundation bearing structure, pile foundation joist composite bearing structure, two placing of reinforcement coagulations
Native support rail beam bottom plate, two placing of reinforcement concrete beam-type structures, support rail beam both sides backfill filler, bridge abutment and headwall, 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；
Reinforced concrete beam type structure described in two rows is accepted at the top of the armored concrete support rail beam bottom plate, and is often arranged
In armored concrete support rail beam bottom plate, internode expansion joint is reserved between armored concrete support rail beam bottom plate described in two adjacent sections；
The pile foundation joist composite bearing structure setting have it is multiple, and per placing of reinforcement concrete support rail beam bottom plate in, phase
A pile foundation joist composite bearing knot is respectively provided with the internode expansion joint of the two adjacent section armored concrete support rail beam bottom plates
Structure, for supporting this two adjacent section armored concrete support rail beam bottom plate, each pile foundation joist composite bearing knot
Structure includes reinforced concrete supporting beam and the second pile foundation bearing structure, and the top of the every second pile foundation bearing structure is equal
The reinforced concrete supporting beam is accepted, the reinforced concrete supporting beam 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；
Filler between setting support rail beam between armored concrete support rail beam bottom plate described in two rows；
Wired weathering section be set between reinforced concrete beam type structure described in two rows, and weathering section has between the line
Cross fall and head fall, enter for current to be introduced to the internode expansion joint of two adjacent sections armored concrete support rail beam bottom plate
And current are discharged；
The armored concrete support rail beam bottom plate and the reinforced concrete beam type structural integrity pouring molding thereon, from
And collectively form armored concrete support rail beam；
Filler between setting support rail beam between armored concrete support rail beam bottom plate described in two rows；
The support rail beam both sides backfill filler is arranged on soft stratum, and by support rail beam both sides backfill filler
The first gutter is provided with, side of first gutter away from support rail beam both sides backfill filler is provided with weathering；
The armored concrete support rail beam bottom plate is located in support rail beam both sides backfill filler；
The lower end of the every first pile foundation bearing structure is stretched into supporting course after passing through the soft stratum, with weakness
When stratum produces sedimentation, the first pile foundation bearing structure can bear negative friction, so as to reinforcing bar armored concrete support rail beam
Stable bearing capacity is provided, the differential settlement to prevent support rail beam both sides backfill filler reduces the perpendicular of armored concrete support rail beam
To adverse effect caused by, vertical and horizontal rigidity；
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 second gutter is provided with by the headwall, the side of second gutter away from the headwall is provided with second
Weathering.
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, all these described first pile foundation bearing structures are arranged in ranks.
Preferably, the cross fall of weathering section is 3%~5% between the line, and head fall is not less than 2 ‰.
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 fixedly installed 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 roadbed 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 caused by foundation stabilization quality is whard to control
Influence of the differential settlement to support rail beam vertical and horizontal rigidity, structure vertical cross stiffness are more excellent.
(3) the first pile foundation bearing structure control settlement effect of the invention is preferable, therefore can reduce cutting bedding and change and fill out thickness
Degree, need to only meet the requirement of basic replacement thickness, can investment reduction, shorten the duration, there are obvious technology and economic advantages.
(4) reinforced concrete supporting beam that pile foundation bearing structure and armored concrete support rail beam bottom plate are set, can subtract significantly
The stress concentration phenomenon of armored concrete support rail beam bottom plate at small pile foundation bearing structure；Further, since reinforced concrete supporting beam
Lateral connection acts on, and also increases the lateral stiffness of structure and the ability of resistance differential settlement deformation, can reduce transverse pile foundation
Quantity, reduce investment.
(5) adjacent armored concrete support rail beam bottom plate shares pile foundation joist composite bearing structure, and in adjacent steel
Internode 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
The influence of temperature 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.
(7) setting armored concrete support rail beam bottom plate by framing type is divided to two rows to set, and can avoid making in train load
Multi-direction bending deformation and complex stress condition are in lower armored concrete support rail beam bottom plate, it is increasingly complex compared to traditional stress
Support rail beam pair, framing pile foundation joist type support rail beam can reduce buckling deformation to armored concrete support rail beam bottom plate and top beam type
The influence of structure.
Brief description of the drawings
Fig. 1 is the schematic longitudinal section of the present invention；
Fig. 2 is along the profile of I-I line in Fig. 1；
Fig. 3 is along the profile of II-II line in Fig. 1；
Fig. 4 is that armored concrete support rail beam bottom plate is overlapped on the schematic diagram on bridge abutment in the present invention；
Fig. 5 is pile foundation joist of the present invention and armored concrete support rail beam bottom plate rigid connection connection diagram.
Fig. 6 is pile foundation joist of the present invention and armored concrete support rail beam bottom plate overlap joint connection diagram.
Fig. 7 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. 7 of reference picture, the compound framing type support rail beam transition section structure of medium-and low-speed maglev two-wire excavation location pile foundation, bag
Include the first pile foundation bearing structure 3, pile foundation joist composite bearing structure 90, two placing of reinforcement concrete support rail beam bottom plates 2, two placing of reinforcements
Concrete beam-type structure 1, support rail beam both sides backfill filler 4, bridge abutment 12 and headwall 13, wherein,
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；
Reinforced concrete beam type structure 1 described in two rows is accepted at the top of the armored concrete support rail beam bottom plate 2, and often
In placing of reinforcement concrete support rail beam bottom plate 2, internode is set to stretch between armored concrete support rail beam bottom plate 2 described in two adjacent sections
Seam；
The pile foundation joist composite bearing structure 90 be provided with it is multiple, and per in placing of reinforcement concrete support rail beam bottom plate 2,
A pile foundation joist composite bearing is respectively provided with the internode expansion joint of the two adjacent section armored concrete support rail beam bottom plates 2
Structure 90, for supporting this two adjacent section armored concrete support rail beam bottom plate 2, each the pile foundation joist is compound holds
Carrying structure 90 includes the pile foundation bearing structure 902 of reinforced concrete supporting beam 901 and second, and the every second pile foundation carrying
The reinforced concrete supporting beam 901 is accepted on the top of structure 902, and the reinforced concrete supporting beam 901 is accepted the reinforcing bar and mixed
Coagulate native 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；
Filler 21 between setting support rail beam between armored concrete support rail beam bottom plate 2 described in two rows；
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；
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 91 of displacement；
The armored concrete support rail beam bottom plate 2 is molded with the formed by integrally casting of reinforced concrete beam type structure 1 thereon,
So as to collectively form armored concrete support rail beam 9；
The support rail beam both sides backfill filler 4 is arranged on soft stratum 5, and backfills filler in the support rail beam both sides
The first gutter 7 is provided with by the of 4, side of first gutter 7 away from support rail beam both sides backfill filler 4 is provided with row
Water slope 8；
The armored concrete support rail beam bottom plate 2 is located in support rail beam both sides backfill filler 4；
The lower end of the every first pile foundation bearing structure 3 pass through the soft stratum 5 after stretch into supporting course 6, with
When soft stratum 5 produces sedimentation, the first pile foundation bearing structure 3 can bear negative friction, so as to reinforcing bar armored concrete
Support rail beam 9 provides stable bearing capacity, and the differential settlement to prevent support rail beam both sides backfill filler 4 reduces armored concrete support rail
Adversely affected caused by the vertical of beam 9, vertical and horizontal rigidity；
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 second gutter 17 is provided with by the headwall 13, side of second gutter 17 away from the headwall 13 is set
It is equipped with the second weathering 18.
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.Stretched in the internode of armored concrete support rail beam
The position reinforced concrete supporting beam 901 and armored concrete support rail beam bottom plate 2 of contracting seam are overlapped using pin 15, and remaining position uses
Rigid connection.
All these described first pile foundation bearing structures 3 are arranged in ranks.
Further, the armored concrete support rail beam bottom plate 2 is overlapped on one end of the bridge abutment 12 and the bridge
It is provided with wear-resisting sliding layer 16 between abutment 12, the pin 15 includes pre-buried connection reinforcing bar 15.1, pitch hemp cut 15.2 and not
Become rusty steel sleeve 15.3, and the pre-buried connection reinforcing bar 15.1 is located in the stainless steel sleeve pipe 15.3 and is fixedly installed between the two
The pitch hemp cut 15.2.
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, taking traditional cutting to excavate, replacement thickness engineering caused greatly is huge, investment is big, long in time limit, and backfill filler construction
Quality is whard to control, bedding long-time stability and the problem of poor durability, and low the reliable of circuit support rail girder construction is put so as to improve
Degree, reduce 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 will deadweight and upper load passes to and its rigidly connected first pile foundation carries
Structure 3, structural reliability is high, can reduce cutting bedding replacement thickness, need to only meet the requirement of basic replacement thickness, can save throwing
Money, shorten the duration, there are obvious technology and economic advantages.
First pile foundation bearing structure 3 uses cast-in-situ bored pile, and transverse direction and longitudinal direction, which has, is arranged with more reinforced concrete drills
Hole pouring pile, vertical and horizontal rigidity are big；And first pile foundation bearing structure 3 go deep into supporting course 6, when soft stratum 5 produces sedimentation,
Pile foundation carrying knot can still bear negative friction and provide stronger bearing capacity to armored concrete support rail beam bottom plate 2.
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, support rail
Sedimentation between beam both ends be located at bridge abutment 12 and it is low put line construction between, 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 transition segment limit F rails have been effectively ensured
Property.
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 support rail beam and bridge abutment
Abrasion and stress concentration between 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
Internode 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 reduce temperature
Spend the influence of stress and shrinkage and creep.
The reinforced concrete supporting beam 901 that pile foundation bearing structure 3 and armored concrete support rail beam bottom plate 2 are set, can be significantly
Reduce the stress concentration phenomenon of armored concrete support rail beam bottom plate 2 at pile foundation bearing structure；Further, since reinforced concrete supporting beam
Lateral connection effect, also increase structure lateral stiffness and resistance differential settlement deformation ability, horizontal stake can be reduced
The quantity of base, reduce investment.
Armored concrete support rail beam bottom plate 2 is set by framing type is divided to two rows to set, and can avoid in High-speed Train Loads
Under for the support rail beam increasingly complex compared to traditional stress, framing pile foundation joist type support rail beam can reduce buckling deformation to reinforcing bar
The influence of concrete support rail beam bottom plate and the structure of top beam type 1.
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) excavating cut slope side slope is changed according to the necessary bedding of design requirement progress and filled out to designing at road bed absolute altitude；Ground
After the completion of processing, by changeover portion design requirement fill it is low after platform put geotechnique basis under circuit support rail beam, geotechnique under support rail beam after platform
Basis filling construction synchronous with abutment cone.According to each position wire feeding and compaction requirement when filling, transition segment limit with
Non- changeover portion area is synchronous layered to fill, and next layer fills after detection meets the requirements and fills last layer again, until armored concrete is held
At the absolute altitude of beam-and-rail bottom plate bottom surface；
(3) in armored concrete support rail beam bottom plate bottom surface, absolute altitude is in subgrade cross section, vertical section direction construction drill fills
Stake, i.e. the first pile foundation bearing structure 3 are noted, drilled pile construction should use the construction technology small to filling roadbed disturbance；Drilling
After bored concrete pile reaches desired strength, pile crown, assembling reinforcement concrete support rail beam bottom plate and the connection with stake are amputated by code requirement
Reinforcing bar；
(3) grown according to design section to armored concrete support rail beam bottom plate 2 and the merogenesis formwork erection of reinforced concrete beam type structure 1,
One-time-concreting is molded, and the positioning of all kinds of built-in fittings such as sleeper pedestal connection reinforcing bar, water conservancy diversion rail bearing built-in fitting etc. is carried out before pouring
With installation；
(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) grown according to design section to armored concrete support rail beam bottom plate 2 and the merogenesis formwork erection of reinforced concrete beam type structure 1,
Face is backfilled between reinforced concrete beam type structure to make intilted weathering and carry out top layer waterproof by design requirement, is once poured
Build up type, carried out before pouring such as positioning of pin, sleeper pedestal connection reinforcing bar, water conservancy diversion rail bearing built-in fitting etc. of all kinds of built-in fittings with
Installation；
(6) construction is low puts the joint both sides headwall 13 of circuit bridge abutment 12, and headwall 13 is applied using concrete one-piece casting
Work, 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 (7)
1. the compound framing type support rail beam transition section structure of medium-and low-speed maglev two-wire excavation location pile foundation, it is characterised in that including
One pile foundation bearing structure, pile foundation joist composite bearing structure, two placing of reinforcement concrete support rail beam bottom plates, two placing of reinforcement beams of concretes
Formula structure, support rail beam both sides backfill filler, bridge abutment and headwall, 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；
Reinforced concrete beam type structure described in two rows is accepted at the top of the armored concrete support rail beam bottom plate, and per placing of reinforcement
In concrete support rail beam bottom plate, internode expansion joint is set between armored concrete support rail beam bottom plate described in two adjacent sections；
The pile foundation joist composite bearing structure setting have it is multiple, and per placing of reinforcement concrete support rail beam bottom plate in, it is adjacent
Be respectively provided with the pile foundation joist composite bearing structure at the internode expansion joint of the two section armored concrete support rail beam bottom plates, with
In supporting this two adjacent section armored concrete support rail beam bottom plate, each pile foundation joist composite bearing structure includes
Reinforced concrete supporting beam and the second pile foundation bearing structure, and the top of the every second pile foundation bearing structure accept it is described
Reinforced concrete supporting beam, the reinforced concrete supporting beam accept 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；
Filler between setting support rail beam between armored concrete support rail beam bottom plate described in two rows；
Wired weathering section be set between reinforced concrete beam type structure described in two rows, and weathering section has laterally between the line
The gradient and head fall, for current to be introduced to the internode expansion joint of two adjacent sections armored concrete support rail beam bottom plate and then are incited somebody to action
Current are discharged；
The convex for limiting the armored concrete support rail beam bottom plate lateral displacement is provided with the reinforced concrete supporting beam
Block machine；
The armored concrete support rail beam bottom plate and the reinforced concrete beam type structural integrity pouring molding thereon, so as to altogether
With composition armored concrete support rail beam；
The support rail beam both sides backfill filler is arranged on soft stratum, and is set by support rail beam both sides backfill filler
There is the first gutter, side of first gutter away from support rail beam both sides backfill filler is provided with weathering；
The armored concrete support rail beam bottom plate is located in support rail beam both sides backfill filler；
The lower end of the every first pile foundation bearing structure is stretched into supporting course after passing through the soft stratum, with soft stratum
When producing sedimentation, the first pile foundation bearing structure can bear negative friction, so as to be provided to reinforcing bar armored concrete support rail beam
Stable bearing capacity, the differential settlement to prevent support rail beam both sides backfill filler reduce the vertical, vertical of armored concrete support rail beam
To with lateral stiffness caused by adverse effect；
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.
2. the compound framing type support rail beam changeover portion knot of medium-and low-speed maglev two-wire excavation location according to claim 1 pile foundation
Structure, it is characterised in that 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. the compound framing type support rail beam changeover portion knot of medium-and low-speed maglev two-wire excavation location according to claim 1 pile foundation
Structure, it is characterised in that position reinforced concrete supporting beam and armored concrete at the internode expansion joint of armored concrete support rail beam
Support rail beam bottom plate is overlapped using pin, and remaining position uses rigid connection or overlap joint.
4. the compound framing type support rail beam changeover portion knot of medium-and low-speed maglev two-wire excavation location according to claim 1 pile foundation
Structure, it is characterised in that all these described first pile foundation bearing structures are arranged in ranks.
5. the compound framing type support rail beam changeover portion knot of medium-and low-speed maglev two-wire excavation location according to claim 1 pile foundation
Structure, it is characterised in that the cross fall of weathering section is 3%~5% between the line, and head fall is not less than 2 ‰.
6. the compound framing type support rail beam changeover portion knot of medium-and low-speed maglev two-wire excavation location according to claim 1 pile foundation
Structure, it is characterised in that 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.
7. the compound framing type support rail beam changeover portion knot of medium-and low-speed maglev two-wire excavation location according to claim 1 pile foundation
Structure, it is characterised in that 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 fixedly installed in the stainless steel sleeve pipe and between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| CN106283946A CN106283946A (en) | 2017-01-04 |
| CN106283946B true CN106283946B (en) | 2017-11-17 |
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| CN112211040A (en) * | 2020-09-29 | 2021-01-12 | 同济大学 | Composite pile plate structure of track-joining engineering roadbed and construction method |
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| KR101504106B1 (en) * | 2013-05-06 | 2015-03-19 | 한국철도기술연구원 | Guideway structure of bracket burying type for maglev levitation train, and constructing method for the same |
| CN104452483B (en) * | 2014-12-09 | 2016-08-17 | 中铁第四勘察设计院集团有限公司 | Middle low speed magnetic suspension traffic engineering is low puts route curve support rail girder construction |
| WO2016138776A1 (en) * | 2015-03-02 | 2016-09-09 | 中铁第四勘察设计院集团有限公司 | Lowly disposed line structure used in medium-low speed magnetic levitation traffic engineering fill section |
| CN105672067B (en) * | 2016-01-21 | 2017-04-26 | 中铁第四勘察设计院集团有限公司 | Bearing-rail beam low track and viaduct transition section structure of medium-low-speed magnetic suspension traffic engineering |
| CN105714626B (en) * | 2016-01-21 | 2017-05-10 | 中铁第四勘察设计院集团有限公司 | Joggle joint type bearing rail beam structure for middle and low-speed magnetic suspension traffic engineering low line |
| CN105887586A (en) * | 2016-04-29 | 2016-08-24 | 中铁第四勘察设计院集团有限公司 | Low implantation line double-wire section terminal spine type bearing rail beam limiting structure in medium and low speed magnetic levitation transportation engineering |
| 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 |
| CN206157481U (en) * | 2016-09-15 | 2017-05-10 | 中铁第四勘察设计院集团有限公司 | Compound framing type support rail roof beam transition section structure of moderate -low speed magnetic levitation double -line excavation location pile foundation |
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