CN206219912U - Medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail beam transition section structure - Google Patents
Medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail beam transition section structure Download PDFInfo
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- CN206219912U CN206219912U CN201621057037.9U CN201621057037U CN206219912U CN 206219912 U CN206219912 U CN 206219912U CN 201621057037 U CN201621057037 U CN 201621057037U CN 206219912 U CN206219912 U CN 206219912U
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- base plate
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- 230000007704 transition Effects 0.000 title claims abstract description 17
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Abstract
The utility model belongs to that middle low speed magnetic suspension traffic engineering is low to put Line technology field, and disclose medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail beam transition section structure, including roadbed filling, support rail beam both sides backfill filler, bridge abutment, trapezoidal filling body and headwall under pile foundation bearing structure, two placing of reinforcement concrete support rail beam base plates, reinforced concrete supporting beam, two placing of reinforcement concrete beam-type structures, support rail beam, pile foundation bearing structure is provided with many；Accept the reinforced concrete beam type structure in the top of armored concrete support rail beam base plate；Support rail beam both sides backfill filler is accepted by roadbed filling under the support rail beam.The utility model long-time stability are more preferable, both the high request to the deformation of support rail girder construction and settlement after construction had been met, the requirement of the controllability of bedding long-time stability, durability and construction quality is met again, effectively realizes magnetic suspension elevated structure with the low smoothly transition for putting line transition section F rails.
Description
Technical field
The utility model belongs to that middle low speed magnetic suspension traffic engineering is low to put Line technology field, low more particularly, in
Fast magnetic floats two-wire 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 a small number of.The middle low speed magnetic suspension railway business that only in March, 2005 Japan's construction at present is opened is transported
The middle low speed magnetic suspension railway business operating line that line-the East Hillside Line and in June, 2014 South Korea open.And the middle low speed of China
Magnetic suspension traffic only National University of Defense technology's test wire, Green City Mountain test wire, Tangshan experiment line at present, but do not put into effect
Formal circuit, and based on elevated structure, it is rarely seen about elevated structure and the low research put in terms of line transition segment structure and
Using.
In wheel rail high speed railway, there is substantial amounts of bridge changeover portion roadbed, high-speed railway changeover portion roadbed is used mostly
Trapezium structure, employs cement stabilized graded macabam and fills, and employ the compacting higher than non-changeover portion roadbed in trapezoidal scope
It is required that.During built high-speed railway operation, often there is non-fragment orbit protuberance, gap, grout in bridge transition segment limit
Etc. disease.The reason for this disease, be mostly because changeover portion roadbed is still by the earth structure of rock and soil constitution, changeover portion
After roadbed is laid a railway track, certain sedimentation still can occur, there is poor (the specification permission settlement after construction of certain settlement after construction with bridge abutment
Difference is not more than 5mm), because high-speed railway uses seamless track steel rail, allowed in settlement after construction difference scope in specification, 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 spliced using fishplate bar scene by a short rail successively, and between leaving rail
Seam, meets the ride comfort of the F rails of magnetic-levitation train even running requirement, and works ensures under rail is leaned on substantially.It is low to put circuit location,
Basis is, by the earth structure of rock and soil constitution, to be influenceed by factors such as landform, geological conditions under support rail beam, 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, 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 rails, in some instances it may even be possible to cause F rails to produce the problems such as faulting of slab ends, deformation, when serious, will influence the normal fortune of maglev vehicle
Battalion.
Utility model content
For the disadvantages described above or Improvement requirement of prior art, the utility model provides medium-and low-speed maglev two-wire embankment ground
Section framing pile foundation joist type support rail beam transition section structure, had both met elevated structure and the low rigidity put between circuit and had settled
Cross, it is ensured that magnetic suspension traffic engineering elevated structure and the low ride comfort requirement for putting line transition section F rails, magnetic floating traffic work is met again
The low intensity for putting line transition section sub-rail foundation of journey, long-time stability requirement, and construction quality controllability is strong.
To achieve the above object, the utility model holds there is provided medium-and low-speed maglev two-wire embankment location framing pile foundation joist type
Beam-and-rail transition section structure, it is characterised in that including pile foundation bearing structure, two placing of reinforcement concrete support rail beam base plates, reinforced concrete
Roadbed filling, support rail beam both sides backfill filler, bridge abutment, ladder under native joist, two placing of reinforcement concrete beam-type structures, support rail beam
Shape filling body and headwall, wherein,
The pile foundation bearing structure is provided with many, and the every pile foundation bearing structure is vertically arranged, and every institute
Accept the reinforced concrete supporting beam in the top for stating pile foundation bearing structure；
Reinforced beam described in a corresponding row is accepted respectively in the top for often arranging the armored concrete support rail beam base plate
Formula structure；
Accept the reinforced concrete beam type structure in the top of the armored concrete support rail beam base plate；
The top of the pile foundation bearing structure is embedded in the reinforced concrete supporting beam and its rigid connection, the armored concrete support
Beam and the armored concrete support rail beam base plate rigid connection or overlap joint, the armored concrete support rail beam base plate and the reinforced concrete
Native girder structure formed by integrally casting shaping is so as to collectively form armored concrete support rail beam；
Filler between support rail beam is set between armored concrete support rail beam base plate described in two rows；
The reinforced concrete supporting beam both sides are provided with for limiting the armored concrete support rail beam base plate lateral displacement
Convex gear platform；
Weathering section between wired weathering section, the line is set between reinforced concrete beam type structure described in two rows to be had
Cross fall and head fall, for by current introduce two adjacent sections armored concrete support rail beam base plate internode expansion joint and then
Current are discharged；
Roadbed filling is arranged between shallow layer reinforcement area and the armored concrete support rail beam base plate under the support rail beam, with
For being put down for the armored concrete support rail beam base plate, reinforced concrete supporting beam and support rail beam both sides backfill filler provide construction
Platform, and for the pile foundation bearing structure provides lateral support；Wherein, the shallow layer reinforcement area is arranged on the superficial of soft stratum
Layer, and under the shallow layer reinforcement area, the support rail beam roadbed filling and the reinforced concrete beam type structure vertical consistency；
The support rail beam both sides backfill filler is accepted by roadbed filling under the support rail beam, and the support rail beam both sides
Backfill filler props up the both sides of the armored concrete support rail beam base plate, and protection is played with to the armored concrete support rail beam base plate
The transverse shifting of the armored concrete support rail beam base 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 pile foundation bearing structure sequentially passes through roadbed filling, the shallow layer reinforcement area under the support rail beam
Stretched into supporting course with after the soft stratum, so that when soft stratum produces sedimentation, the pile foundation bearing structure can bear to bear
Frictional resistance, so as to provide the bearing capacity of stabilization to armored concrete support rail beam base plate and reinforced concrete beam type structure, to reduce
Because of the adverse effect that the sedimentation of filler filling body is produced to the vertical of armored concrete support rail beam, vertical and horizontal rigidity；
One end of the armored concrete support rail beam base plate is overlapped on the bridge abutment, and both are connected by pin
Release longitudinal restraint is connect, and limits lateral displacement；
The both sides of one end that the armored concrete support rail beam base plate is overlapped on the bridge abutment are respectively provided with the end
Wall, and the headwall per side 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 base plate, its with it is described
Roadbed filling is abutted near one end of the bridge abutment under support rail beam, for accepting the armored concrete support rail beam bottom
Plate, the backfill of support rail beam both sides filler and headwall；
The trapezoidal filling body both sides are provided with second weathering consistent with the first weathering gradient.
Preferably, the pile foundation bearing structure is cast-in-situ bored pile, joist and support rail beam base plate rigid connection or overlap joint, with pile foundation
Bearing structure rigid connection.Overlapped using pin with support rail beam base plate in the position joist of support rail beam internode seam, remaining position is using firm
Connect.
Preferably, the cross fall of weathering section is 3%~5% between the line, and head fall is not less than 2 ‰.
Preferably, the support rail beam both sides backfill the height of filler and the height phase of the armored concrete support rail beam base plate
Deng.
Preferably, pile foundation bearing structure described in all these is arranged in ranks.
Preferably, the trapezoidal filling body mixes cement production systD using graded broken stone.
Preferably, the armored concrete support rail beam base plate is overlapped on one end of the bridge abutment and the bridge abutment
Between be provided with wear-resisting sliding layer.
Preferably, the pin includes pre-buried connection reinforcing bar, 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 utility model compared with prior art, can obtain down
Row beneficial effect：
(1) armored concrete support rail beam base plate of the present utility model, reinforced concrete beam type structure use reinforced concrete
Soil scene one-piece casting, the two composition integral reinforced concrete structure is used to directly take on track load and the magnetic of track transmission is floated
Train load, then will deadweight and upper load pass to its rigidly connected pile foundation bearing structure, structural reliability is high.
(2) pile foundation bearing structure of the present utility model is goed deep into supporting course, and when embankment produces certain sedimentation, pile foundation carries knot
Structure can still bear negative friction and provide stronger bearing capacity, it is to avoid inequality caused by filling compaction quality is difficult to control
Influence of the even sedimentation to support rail beam vertical and horizontal rigidity, structure vertical cross stiffness is more excellent.
(3) circuit soft soil zone is put low, necessity is carried out according to the superficial layer the need for embankment stability to soft stratum
Reinforcing, its reinforcement depth by embankment stability control, compared to by settle and tradition when stabilization Two indices are controlled solely
For base reinforcing mode, shallow layer reinforcement area reinforcement depth is small, and roadbed reclamation and roadbed can be effectively controlled with reference to pile foundation bearing structure
Settlement after construction.Non- soft soil zone can more avoid the stiffening basic ground of the wide area produced after embankment slope, and
Pile foundation bearing structure construction quality is more easy to control, can effectively control construction quality, and investment reduction shortens the duration, with obvious
Technology and economic advantages.
(4) reinforced concrete supporting beam that pile foundation bearing structure and reinforced concrete floor are set, can greatly reduce pile foundation
The stress concentration phenomenon of armored concrete support rail beam base plate at bearing structure；Further, since the lateral connection effect of joist, also increases
Add the lateral stiffness of structure and the ability of resistance differential settlement deformation, the quantity of transverse pile foundation can have been reduced, reduce investment.
(5) armored concrete support rail beam base plate is overlapped on bridge abutment near one end of elevated bridge, by pin
Connection, it is to avoid sedimentation faulting of slab ends between the two caused by measures of foundation treatment difference, it is ensured that the floating F rails of magnetic it is low put circuit with
Bridge abutment connected position will not produce faulting of slab ends, effectively realize that magnetic suspension traffic engineering elevated structure puts line transition section F with low
The smoothly transition of rail.
(6) armored concrete support rail beam base plate is pressed framing type and set is divided to two rows to set, and can avoid making in train load
Multi-direction bending is in lower support rail beam base plate to deform and complex stress condition, the support rail beam increasingly complex compared to traditional stress,
Framing pile foundation joist type support rail beam can reduce influence of the buckling deformation to support rail beam base plate and top girder structure.
Brief description of the drawings
Fig. 1 is schematic longitudinal section of the present utility model；
Fig. 2 is the generalized section along I-I line in Fig. 1；
Fig. 3 is the generalized section along II-II line in Fig. 1；
Fig. 4 is the generalized section along III-III line in Fig. 1；
Fig. 5 is the floor map that armored concrete support rail beam base plate is overlapped on bridge abutment in the utility model；
Fig. 6 is the utility model pile foundation joist and armored concrete support rail beam base plate rigid connection connection diagram.
Fig. 7 is that the utility model pile foundation joist overlaps connection diagram with armored concrete support rail beam base plate.
Fig. 8 is the cross-sectional view of pin in the utility model.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and implementation
Example, is further elaborated to the utility model.It should be appreciated that specific embodiment described herein is only used to explain
The utility model, is not used to limit the utility model.Additionally, institute in the utility model disclosed below each implementation method
As long as the technical characteristic being related to does not constitute conflict and can just be mutually combined each other.
1~Fig. 8 of reference picture, medium-and low-speed maglev two-wire embankment location framing pile foundation joist type support rail girder construction, including pile foundation
Bearing structure 3, reinforced concrete supporting beam 90, two placing of reinforcement concrete support rail beam base plates 2, two placing of reinforcement concrete beam-type structures 1,
Roadbed filling 5, support rail beam both sides backfill filler 4, bridge abutment 12, trapezoidal filling body 14 and headwall 13 under support rail beam, wherein,
The pile foundation bearing structure 3 is provided with many, and the every pile foundation bearing structure 3 is vertically arranged, and every
Accept the reinforced concrete supporting beam 90 in the top of the pile foundation bearing structure 3；
The reinforced concrete supporting beam 90 accepts the armored concrete support rail beam base plate 2；
Reinforced beam described in a corresponding row is accepted respectively in the top for often arranging the armored concrete support rail beam base plate 2
Formula structure 1；
The top of the pile foundation bearing structure 3 is embedded in the reinforced concrete supporting beam 90 and its rigid connection, the reinforced concrete
Native joist 90 and the rigid connection of armored concrete support rail beam base plate 2 or overlap joint, the armored concrete support rail beam base plate 2 with it is described
The formed by integrally casting of reinforced concrete beam type structure 1 is molded so as to collectively form armored concrete support rail beam 9；
Filler 21 between support rail beam is set between armored concrete support rail beam base plate 2 described in two rows；
Weathering section tool between wired weathering section, the line is set between reinforced concrete beam type structure 1 described in two rows
There are cross fall and head fall, for current are introduced into the internode expansion joint of two adjacent sections armored concrete support rail beam base plate 2
And then discharge current；The cross fall of weathering section is weathering section between 3%~5%, more preferably 4%, line between the line
Head fall be not less than 2 ‰, in order to draining.
The both sides of the reinforced concrete supporting beam 90 are provided with for limiting the horizontal position of the armored concrete support rail beam base plate 2
The convex gear platform 91 of shifting；
Under the support rail beam roadbed filling 5 be arranged on shallow layer reinforcement area 6 and the armored concrete support rail beam base plate 2 it
Between, for be the armored concrete support rail beam base plate 2, reinforced concrete supporting beam 90 and support rail beam both sides backfill filler 4 carry
For operation platform, and for the pile foundation bearing structure 3 provides lateral support；Wherein, the shallow layer reinforcement area 6 is arranged on flabbily
The superficial layer of layer 7, and roadbed filling 5 and the reinforced concrete beam type structure under the shallow layer reinforcement area 6, the support rail beam
1 vertical consistency；
The support rail beam both sides backfill filler 4 is accepted by roadbed filling 5 under the support rail beam, and the support rail beam two
Side backfill filler 4 props up the both sides of the armored concrete support rail beam base plate 2, with to the armored concrete support rail beam base plate 2
The transverse shifting of the armored concrete support rail beam base plate 2 is shielded and constrained, and maintenance passage is provided；
Roadbed filling 5 and support rail beam both sides backfill filler 4 collectively form filler filling body 10, institute under the support rail beam
State the both sides of filler filling body 10 and be provided with weathering 11；
The lower end of the every pile foundation bearing structure 3 sequentially passes through roadbed filling 5, the shallow layer reinforcement under the support rail beam
Stretched into supporting course 8 after area 6 and the soft stratum 7, so that when soft stratum 7 produces sedimentation, the pile foundation bearing structure 3 can
Negative friction is born, so as to provide the carrying of stabilization to armored concrete support rail beam base plate 2 and reinforced concrete beam type structure 1
Power, is produced not with the sedimentation reduced because of filler filling body 10 to the vertical of armored concrete support rail beam 9, vertical and horizontal rigidity
Profit influence；
One end of the armored concrete support rail beam base plate 2 is overlapped on the bridge abutment 12, and both pass through pin
15 Connection Release longitudinal restraints are followed closely, and limits lateral displacement；
The both sides of one end that the armored concrete support rail beam base plate 2 is overlapped on the bridge abutment 12 are respectively provided with described
Headwall 13, and the headwall 13 per side abuts with the support rail beam both sides backfill filler 4 of respective side respectively, for gear shield institute
State support rail beam both sides backfill filler 4；
The trapezoidal filling body 14 is arranged between shallow layer reinforcement area 6 and the armored concrete support rail beam base plate 2, its with
Roadbed filling 5 is abutted near one end of the bridge abutment 12 under the support rail beam, is held for accepting the armored concrete
Beam-and-rail base plate 2, the backfill of support rail beam both sides 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, joist 90 and the rigid connection of 9 base plate of support rail beam 2 or is taken
Connect, with the rigid connection of pile foundation bearing structure 3.Taken using pin 15 with the base plate 2 of support rail beam 9 in the position joist 90 of support rail beam internode seam
Connect, remaining position uses rigid connection.
Further, the cross fall of weathering section is 3%~5% between the line, and head fall is typically no less than 2 ‰.
The height of the support rail beam both sides backfill filler 4 and highly equal, the institute of the armored concrete support rail beam base plate 2
These the described first pile foundation bearing structures 3 having are arranged in ranks.
Further, the trapezoidal filling body 14 mixes cement production systD, the armored concrete support rail beam bottom using graded broken stone
Plate 2 is overlapped on and wear-resisting sliding layer 16, the pin is provided between one end of the bridge abutment 12 and the bridge abutment 12
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 set 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 that engineering caused by traditional foundation stabilization measure is huge, invest big, long in time limit, and basement process and embankment
Construction quality is whard to control, the problem of bedding long-time stability and poor durability, so as to improve low circuit support rail girder construction of putting
Reliability, reduces the engineering risk of traditional structure pattern.
Armored concrete support rail beam 9 of the present utility model uses reinforced concrete soil scene one-piece casting, to directly take on rail
Road load and the magnetic-levitation train load of track transmission, then deadweight and upper load are passed to and its rigidly connected first pile foundation
Bearing structure 3, structural reliability is high, can save the large area stiffening basic ground produced after traditional embankment slope.
First pile foundation bearing structure 3 uses cast-in-situ bored pile, and transverse direction and longitudinal direction has and is arranged with many reinforced concrete drills
Hole pouring pile, vertical and horizontal rigidity is big；And first pile foundation bearing structure 3 go deep into supporting course 8, when soft stratum 7 produces sedimentation,
First pile foundation bearing structure 3 can still bear negative friction and provide stronger bearing capacity to armored concrete support rail beam base plate 2.
It is low put circuit by soft soil zone when, should according to the need for embankment stability to ground superficial layer carry out it is necessary plus
Gu, form shallow layer reinforcement area 6., by embankment stability control, its reinforcement depth should be according to embankment for the reinforcement depth in shallow layer reinforcement area 6
Raising, foundation condition are determined by stability calculation.Compared to traditional single ground when being controlled by sedimentation and stabilization Two indices
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, invests small, and more conducively after construction quality and work
The control of sedimentation, and save cost and shorten the duration.
One end of armored concrete support rail beam base plate 2 of armored concrete support rail beam 9 is overlapped on bridge abutment 12, and the two leads to
Cross pin 15 to connect, the releasable temperature stress in the longitudinal direction of pin 15 realizes that support rail beam, in the flexible of longitudinal direction, laterally limits support rail beam
Displacement, improves the lateral stability of structure.One end of support rail beam overlaps with bridge abutment 12, makes low to put circuit support rail beam and bridge
The sedimentation of the lap position of abutment 12 is consistent, it is to avoid bridge abutment 12 and it is low put circuit support rail girder construction between produce faulting of slab ends sedimentation；It is low
Put the other end of circuit armored concrete support rail beam base plate 2 and be embedded in the low of stabilization and put line construction, its sedimentation 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 two ends be located at bridge abutment 12 and it is low put 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, and the smooth-going of transition segment limit F rails has been effectively ensured
Property.
Wear-resisting sliding layer 16 is arranged between armored concrete support rail beam base plate 2 and bridge abutment 12, by resistance to mill sliding
The effect of layer 16, can to a certain extent release the rotation that support rail beam is likely to occur under the load actions such as relative settlement, temperature
Constraint, and the dynamic stress cushioning effect of bridge abutment 12 is transferred to magnetic-levitation train, it also avoid support rail beam and bridge abutment
Abrasion and stress concentration between 12 cause the partial pressing of structure to destroy.
Adjacent armored concrete support rail beam base plate 2 shares pile foundation joist composite bearing structure, and in adjacent reinforcing bar
Expansion joint is reserved between concrete support rail beam base plate 2, can avoid encorbelmenting impact failure of the section by train load, and reduce temperature should
The influence of power and shrinkage and creep.
The reinforced concrete supporting beam 90 that pile foundation bearing structure 3 and reinforced concrete floor 2 are set, can greatly reduce pile foundation
The stress concentration phenomenon of armored concrete support rail beam base plate 2 at bearing structure；Further, since the lateral connection effect of joist 90,
The lateral stiffness of structure and the ability of resistance differential settlement deformation are also increased, the quantity of transverse pile foundation can be reduced, reduced and throw
Money.
Armored concrete support rail beam base plate 2 is pressed framing type and set is divided to two rows to set, and can avoid in High-speed Train Loads
Lower support rail beam base plate 2 is in multi-direction bending and deforms and complex stress condition, the support rail beam increasingly complex compared to traditional stress, point
Width pile foundation joist type support rail beam can reduce influence of the buckling deformation to support rail beam base plate 2 and top girder structure 1.
The specific making step of the utility model is as follows：
(1) construction overhead bridge structure abutment, pours bridge abutment body concrete, abutment of constructing, and backfills abutment foundation foundation ditch；
The positioning of pin and embedded work should be performed before abutment concreting；
(2) it is low after smooth platform to put circuit location construction site, carried out at necessary shallow layer foundation reinforcing according to design requirement
Reason, after the completion of basement process, is filled by changeover portion design requirement and low after platform puts geotechnique basis, support rail beam after platform under circuit support rail beam
Lower geotechnique basis filling construction synchronous with abutment cone.According to each position wire feeding and compaction requirement, changeover portion when filling
Scope is synchronous layered with non-changeover portion area to be filled, and next layer is filled after detection meets the requirements and fills last layer again, until reinforcing bar is mixed
At the absolute altitude of solidifying soil support rail beam base plate bottom surface；
(3) embankment subgrade cross section, vertical section direction construction drill is in reinforced concrete floor bottom surface absolute altitude to irrigate
Stake, i.e. the first pile foundation bearing structure 3, drilled pile construction should disturb small construction technology using to railway embankment, exist if necessary
Steel pile casting is set in embankment altitude range or draws hole；After cast-in-situ bored pile reaches desired strength, amputated by code requirement
Pile crown, colligation concrete floor and the connection reinforcing bar with stake；
(4) formwork erection of platform 91, one-time-concreting shaping, before pouring are kept off to reinforced concrete supporting beam 90, convex according to design attitude
Carry out all kinds of built-in fittings such as pin 10 and the positioning with the connection reinforcing bar of pile foundation and install, concrete is removed after reaching design strength
Template；
(5) high-strength wearable sliding layer is laid on abutment in armored concrete support rail beam and abutment overlap joint, according to design
Section is long to armored concrete support rail beam base plate 2 and the merogenesis formwork erection of reinforced concrete beam type structure 1, and each part concrete reaches design
Backfill face between form removal, reinforced concrete beam type structure is distinguished after intensity and makes intilted weathering and longitudinal drainage slope
And top layer waterproof is carried out by design requirement, such as pin, sleeper the pedestal connection of all kinds of built-in fittings is carried out in one-time-concreting shaping before pouring
The positioning of reinforcing bar, water conservancy diversion rail bearing built-in fitting etc. and installation；
(6) construction is low puts the joint both sides headwall 13 of circuit bridge abutment 12, and headwall 13 is applied using concrete one-piece casting
Work, waits the concrete of headwall 13 to reach form removal after design strength, then puts circuit graded broken stone top by design requirement construction is low
The backfill layer in face, confining bed, associated satellite structures, by cone top surface confining bed of design and construction bridge abutment 12 etc., side of constructing
Slope protection, drainage system etc..
(7) carry out it is low put circuit and the laying of the elevated structure section of track and the installation of associated satellite engineering and construction, construction finishes
Afterwards.
As it will be easily appreciated by one skilled in the art that preferred embodiment of the present utility model is the foregoing is only, not
It is used to limit the utility model, all any modifications made within spirit of the present utility model and principle, equivalent and changes
Enter, should be included within protection domain of the present utility model.
Claims (9)
1. medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail beam transition section structure, it is characterised in that including stake
Base bearing structure, two placing of reinforcement concrete support rail beam base plates, reinforced concrete supporting beam, two placing of reinforcement concrete beam-type structures, hold
Roadbed filling, support rail beam both sides backfill filler, bridge abutment, trapezoidal filling body and headwall under beam-and-rail, wherein,
The pile foundation bearing structure is provided with many, and the every pile foundation bearing structure is vertically arranged, and the every stake
Accept the reinforced concrete supporting beam in the top of base bearing structure；
Reinforced concrete beam type knot described in a corresponding row is accepted respectively in the top for often arranging the armored concrete support rail beam base plate
Structure；
Accept the reinforced concrete beam type structure in the top of the armored concrete support rail beam base plate；
The top of the pile foundation bearing structure is embedded in the reinforced concrete supporting beam and its rigid connection, the reinforced concrete supporting beam with
The armored concrete support rail beam base plate rigid connection or overlap joint, the armored concrete support rail beam base plate and the reinforced beam
Formula structural integrity pours shaping so as to collectively form armored concrete support rail beam；
Filler between support rail beam is set between armored concrete support rail beam base plate described in two rows；
The reinforced concrete supporting beam both sides are provided with for limiting the convex of the armored concrete support rail beam base plate lateral displacement
Type keeps off platform；
Weathering section between wired weathering section, the line is set between reinforced concrete beam type structure described in two rows to be had laterally
The gradient and head fall, for current are introduced into two adjacent sections armored concrete support rail beam base plate internode expansion joint and then by water
Stream discharge；
Roadbed filling is arranged between shallow layer reinforcement area and the armored concrete support rail beam base plate under the support rail beam, for
For the armored concrete support rail beam base plate, reinforced concrete supporting beam and support rail beam both sides backfill filler provide operation platform, and
For the pile foundation bearing structure provides lateral support；Wherein, the shallow layer reinforcement area is arranged on the superficial floor of soft stratum, and
The vertical consistency of roadbed filling and the reinforced concrete beam type structure under the shallow layer reinforcement area, the support rail beam；
The support rail beam both sides backfill filler is accepted by roadbed filling under the support rail beam, and the support rail beam both sides backfill
Filler props up the both sides of the armored concrete support rail beam base plate, is shielded with to the armored concrete support rail beam base plate
And the transverse shifting of the armored concrete support rail beam base plate is constrained, and maintenance passage is provided；
Roadbed filling and support rail beam both sides backfill filler collectively form filler filling body under the support rail beam, and described filler is filled out
The first weathering is provided with building body；
The lower end of the every pile foundation bearing structure sequentially passes through roadbed filling, the shallow layer reinforcement area and institute under the support rail beam
Stretched into supporting course after stating soft stratum, so that when soft stratum produces sedimentation, the pile foundation bearing structure can bear negative frictional resistance
Power, so as to provide the bearing capacity of stabilization to armored concrete support rail beam base plate and reinforced concrete beam type structure, to reduce because filling out
Expect the adverse effect that the sedimentation of filling body is produced to the vertical of armored concrete support rail beam, vertical and horizontal rigidity；
One end of the armored concrete support rail beam base plate is overlapped on the bridge abutment, and both are connected by pin and released
Longitudinal restraint is put, and limits lateral displacement；
The both sides of one end that the armored concrete support rail beam base plate is overlapped on the bridge abutment are respectively provided with the headwall, and
And the headwall per side is abutted with the support rail beam both sides backfill filler of respective side respectively, for the gear shield support rail beam both sides
Backfill filler；
The trapezoidal filling body is arranged between shallow layer reinforcement area and the armored concrete support rail beam base plate, itself and the support rail
Roadbed filling is abutted near one end of the bridge abutment under beam, for accepting the armored concrete support rail beam base plate, holding
Beam-and-rail both sides backfill filler and headwall；
The trapezoidal filling body both sides are provided with second weathering consistent with the first weathering gradient.
2. medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail beam changeover portion knot according to claim 1
Structure, it is characterised in that the pile foundation bearing structure is cast-in-situ bored pile joist and support rail beam base plate rigid connection or overlap joint, is held with pile foundation
Carry structure rigid connection.
3. medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail beam changeover portion knot according to claim 1
Structure, it is characterised in that overlapped using pin in position joist and the support rail beam base plate of support rail beam internode seam, remaining position is using firm
Connect.
4. medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail beam changeover portion knot according to claim 1
Structure, it is characterised in that the height of the support rail beam both sides backfill filler and the height phase of the armored concrete support rail beam base plate
Deng.
5. medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail beam changeover portion knot according to claim 1
Structure, it is characterised in that pile foundation bearing structure described in all these is arranged in ranks.
6. medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail beam changeover portion knot according to claim 1
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 ‰.
7. medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail beam changeover portion knot according to claim 1
Structure, it is characterised in that the trapezoidal filling body mixes cement production systD using graded broken stone.
8. medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail beam changeover portion knot according to claim 1
Structure, it is characterised in that the armored concrete support rail beam base plate is overlapped on one end of the bridge abutment and the bridge abutment
Between be provided with wear-resisting sliding layer.
9. medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail beam changeover portion knot according to claim 1
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 set in the stainless steel sleeve pipe and between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621057037.9U CN206219912U (en) | 2016-09-15 | 2016-09-15 | Medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail beam transition section structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621057037.9U CN206219912U (en) | 2016-09-15 | 2016-09-15 | Medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail beam transition section structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206219912U true CN206219912U (en) | 2017-06-06 |
Family
ID=58782231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621057037.9U Withdrawn - After Issue CN206219912U (en) | 2016-09-15 | 2016-09-15 | Medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail beam transition section structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206219912U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106283967A (en) * | 2016-09-15 | 2017-01-04 | 中铁第四勘察设计院集团有限公司 | Medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail beam transition section structure |
| CN111636256A (en) * | 2020-06-24 | 2020-09-08 | 中铁四院集团西南勘察设计有限公司 | Subgrade structure and construction method of straddle-type monorail low-lying line |
-
2016
- 2016-09-15 CN CN201621057037.9U patent/CN206219912U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106283967A (en) * | 2016-09-15 | 2017-01-04 | 中铁第四勘察设计院集团有限公司 | Medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail beam transition section structure |
| CN106283967B (en) * | 2016-09-15 | 2017-10-13 | 中铁第四勘察设计院集团有限公司 | Medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail beam transition section structure |
| CN111636256A (en) * | 2020-06-24 | 2020-09-08 | 中铁四院集团西南勘察设计有限公司 | Subgrade structure and construction method of straddle-type monorail low-lying line |
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