CN206127758U - Moderate -low speed magnetic levitation traffic engineering double -line excavation location detached pier column type support rail roof beam transition section structure - Google Patents

Abstract

The utility model belongs to the technical field of the low circuit of putting of well low -speed maglev traffic engineering to moderate -low speed magnetic levitation traffic engineering double -line excavation location detached pier column type support rail roof beam transition section structure is disclosed, backfill filler, bridge abutment and headwall including pile foundation load bearing structure, reinforced concrete support rail breast board, two rows of reinforced concrete beam structure, support rail roof beam both sides, accept on pile foundation load bearing structure's top reinforced concrete support rail breast board, accept on the top of reinforced concrete support rail breast board reinforced concrete beam structure, the other first escape canal that is provided with of packing is backfilled to support rail roof beam both sides, and first escape canal is kept away from support rail roof beam both sides and is backfilled the one side of packing be provided with a draining slope. The utility model discloses long term stability is better, has both satisfied the high requirement to support rail roof beam structural distortion and post -construction settlement, satisfies the requirement of foundation bed long term stability, durability and construction quality's controllability again, effectively realizes magnetic suspension elevated structure and low smooth -going transition of putting circuit changeover portion F rail.

Description

Medium-and low-speed maglev traffic engineering two-wire excavation location independence pier stud type support rail beam changeover portion Structure

Technical field

This 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 floating traffic engineering two-wire excavation location support rail beam transition section structure pattern.

Background technology

Middle low speed magnetic suspension track traffic belongs to a kind of novel traffic mode, and achievement in research both domestic and external is less, the whole world The circuit for opening operation is even more minority.The middle low speed magnetic suspension railway business that only in March, 2005 Japan's construction at present is opened is transported The middle low speed magnetic suspension railway business operating line that line-the East Hillside Line and in June, 2014 Korea open.And the middle low speed of China Magnetic suspension traffic only National University of Defense technology's test wire, Green City Mountain test wire, Tangshan experiment line at present, but do not put into effect Formal circuit, and 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 adopted mostly Trapezium structure, employs cement stabilized graded macabam and fills in trapezoidal scope, and employs the compacting higher than non-changeover portion roadbed Require.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 remained 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 adopts seamless track steel rail, allow in settlement after construction difference scope, to have no effect in specification Normal operation, but the diseases such as non-fragment orbit protuberance, gap, grout can be caused, need timely repair and maintenance.

The F rails of medium-and low-speed maglev traffic line are spliced using fishplate bar scene by a short rail successively, and are left between rail Seam, meets 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, by the earth structure of rock and soil constitution, to be affected by factors such as landform, geological conditions under support rail beam, and quality is not relatively easily-controllable System, under load and the effect of various factor of natural environments differential settlement is also easy to produce, and 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 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 affect the normal fortune of maglev vehicle Battalion.

Utility model content

For the disadvantages described above or Improvement requirement of prior art, it is double that this utility model provides medium-and low-speed maglev traffic engineering Line excavation location independence pier stud type support rail beam transition section structure, the structure should meet elevated structure and it is low put between circuit it is firm Degree and sedimentation transition, it is ensured that magnetic suspension traffic engineering elevated structure and the low ride comfort requirement for putting line transition section F rail, it is full again The low intensity for putting line transition section sub-rail foundation of sufficient magnetic floating traffic engineering, long-time stability are required, and construction quality controllability is strong.

For achieving the above object, this utility model provides medium-and low-speed maglev traffic engineering two-wire excavation location independence pier stud Formula support rail beam transition section structure, it is characterised in that including pile foundation bearing structure, armored concrete support rail beam base plate, two placing of reinforcements Concrete beam-type structure, support rail beam both sides backfill filler, bridge abutment and headwall, wherein,

The pile foundation bearing structure is provided with many, is vertically arranged per pile foundation bearing structure described in root, and the institute per root Accept the armored concrete support rail beam base plate in the top for stating pile foundation bearing structure；

Reinforced concrete beam type structure described in two rows is accepted at the top of the armored concrete support rail beam base plate, and described The top of pile foundation bearing structure is embedded in the armored concrete support rail beam base plate and just connects with it, the armored concrete support rail beam bottom Plate and reinforced concrete beam type structure difference formed by integrally casting molding described in every row, so as to collectively form armored concrete support rail beam；

Wired weathering section is set described in two rows between reinforced concrete beam type structure, and weathering section has between the line Cross fall and head fall, for current are introduced into two adjacent sections armored concrete support rail beam base plate internode expansion joint further Current are discharged；

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, first gutter is provided with the first draining away from the side that the support rail beam both sides backfill filler Slope；

The armored concrete support rail beam base plate is located in support rail beam both sides backfill filler；

Lower end per pile foundation bearing structure described in root is stretched in supporting course through after the soft stratum, with soft stratum When producing sedimentation, the pile foundation bearing structure can bear negative friction, so as to provide stable to reinforcing bar armored concrete support rail beam Bearing capacity, in case support rail beam both sides backfill filler differential settlement reduce armored concrete support rail beam it is vertical, longitudinal direction and The adverse effect that lateral stiffness is produced；

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 abuts respectively with the support rail beam both sides backfill filler of respective side, and for gear the support rail is protected Beam both sides backfill filler；

The second gutter is provided with by the headwall, second gutter is provided with second away from the side of the headwall Weathering.

Preferably, the pile foundation bearing structure is cast-in-situ bored pile, and the armored concrete support rail beam bottom is stretched on its top In plate and the steel reinforcement cage of cast-in-situ bored pile is also stretched in the armored concrete support rail beam base plate.

Preferably, pile foundation bearing structure described in all these is 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 base plate is overlapped on one end of the bridge abutment and the bridge abutment Between be provided with wear-resisting sliding layer.

Preferably, the pin includes pre-buried connection reinforcing bar, Colophonium hemp cut and stainless steel sleeve pipe, the pre-buried connection reinforcing bar The Colophonium hemp cut is fixedly installed in the stainless steel sleeve pipe and between the two.

In general, by the contemplated above technical scheme of this utility model compared with prior art, can obtain down Row beneficial effect：

(1) armored concrete support rail beam base plate is overlapped on bridge abutment, by pin near one end of elevated bridge Connection, it is to avoid between the two because of sedimentation faulting of slab ends that measures of foundation treatment difference causes, it is ensured that 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 the flat of circuit F rails with low Along transition.

(2) armored concrete support rail beam adopt reinforced concrete soil scene one-piece casting, to directly take on track load and The magnetic-levitation train load of track transmission, then deadweight and upper load are passed to and its rigidly connected pile foundation bearing structure, tie Structure reliability is high.

(3) pile foundation bearing structure of the present utility model is goed deep in supporting course, and when roadbed produces certain sedimentation, pile foundation carries knot Structure can still bear negative friction and provide stronger bearing capacity, it is to avoid because of the wayward inequality for causing of foundation stabilization quality Even impact of the sedimentation to support rail beam vertical and horizontal rigidity, structure vertical cross stiffness and structural reliability it is more excellent.

(4) pile foundation bearing structure control settlement effect of the present utility model preferably, 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, the reduction of erection time, with obvious technology and economic advantages.

(5) while two placing of reinforcement concrete beam-type structures of two-wire are combined by reinforced concrete floor, can To be effectively increased the lateral stiffness of reinforced concrete beam type structure, make left and right two save reinforced concrete beam type structure and be placed in rigidity phase On same reinforced concrete floor, the lateral stability of reinforced concrete beam type structure can be effectively increased, control reinforced concrete Relative settlement between native girder structure, reduce gauge between differential settlement, also beneficial to operation during maintenance with safeguard, measure letter Single, easily construction, cost province, effect is good.

Description of the drawings

Fig. 1 is this utility model schematic longitudinal section；

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 the floor map that armored concrete support rail beam base plate is overlapped on bridge abutment in this utility model；

Fig. 5 is the cross-sectional view of pin in this 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 enforcement Example, is further elaborated to this utility model.It should be appreciated that specific embodiment described herein is only to explain This utility model, is not used to limit this utility model.Additionally, institute in this utility model disclosed below each embodiment As long as the technical characteristic being related to does not constitute each other conflict and just can be mutually combined.

With reference to Fig. 1～Fig. 5, medium-and low-speed maglev traffic engineering two-wire excavation location independence pier stud type support rail beam changeover portion knot Structure, including pile foundation bearing structure 3, armored concrete support rail beam base plate 2, two placing of reinforcement concrete beam-type structures 1, support rail beam both sides Backfill filler 4, bridge abutment 12 and headwall 13, wherein,

The pile foundation bearing structure 3 is provided with many, is vertically arranged per pile foundation bearing structure 3 described in root, and per root Accept the armored concrete support rail beam base plate 2 in the top of the pile foundation bearing structure 3；

Accept reinforced concrete beam type structure 1 described in two rows, and institute in the top of the armored concrete support rail beam base plate 2 The top for stating pile foundation bearing structure 3 is embedded in the armored concrete support rail beam base plate 2 and just connects with it, the armored concrete support rail Beam base plate 2 and the formed by integrally casting molding of reinforced concrete beam type structure described in every row 1, so as to collectively form armored concrete support rail beam 9；

Wired weathering section is set described in two rows between reinforced concrete beam type structure 1, weathering section tool between the line 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 in current；The cross fall of weathering section is 3%～5%, more preferably 4% between the line, weathering section between line Head fall be not less than 2 ‰, in order to draining；

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 It is provided with the first gutter 7 by the of 4, first gutter 7 is provided with the away from the side that the support rail beam both sides backfill filler 4 One weathering 8；

The armored concrete support rail beam base plate 2 is located in support rail beam both sides backfill filler 4；

Stretch in supporting course 6, with weakness through after the soft stratum 5 lower end per pile foundation bearing structure 3 described in root When stratum 5 produces sedimentation, the pile foundation bearing structure 3 can bear negative friction, so as to carry to reinforcing bar armored concrete support rail beam 9 For stable bearing capacity, in case the differential settlement of support rail beam both sides backfill filler 4 reduces the perpendicular of armored concrete support rail beam 9 To the adverse effect that, vertical and horizontal rigidity is produced；

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 respectively with the support rail beam both sides backfill filler 4 of respective side, for gear shield institute State support rail beam both sides backfill filler 4；

The second gutter 17 is provided with by the headwall 13, second gutter 17 sets away from the side of the headwall 13 It is equipped with the second weathering 18.

Further, the pile foundation bearing structure 3 is cast-in-situ bored pile, and the armored concrete support rail beam bottom is stretched on its top In plate 2 and the steel reinforcement cage of cast-in-situ bored pile is also stretched in the armored concrete support rail beam base plate 2, stake described in all these Base bearing structure 3 is arranged in ranks.

The structural shape can in effectively solving the low circuit of putting of low speed magnetic suspension traffic engineering it is tight to post-construction settlement of subgrade requirement Lattice, take traditional cutting excavate replacement thickness it is big caused by engineering is huge, invest big, long in time limit, and backfill filler construction Quality is wayward, the problem of bedding long-time stability and poor durability, so as to improve the low reliability for putting circuit support rail girder construction Degree, reduces engineering risk.

The agent structure of this utility model armored concrete support rail beam 9 adopts reinforced concrete soil scene one-piece casting, reinforcing bar The girder structure of concrete support rail beam 9 to directly take on track load and track transmission magnetic-levitation train load, then will deadweight and Upper load is passed to and its rigidly connected pile foundation bearing structure 3, and structural reliability is high.Pile foundation bearing structure 3 adopts reinforcing bar Concrete drilling bored concrete pile makes, and transverse direction and longitudinal direction is made up of multiple rows of reinforced concrete bored pile, and vertical cross stiffness is big；And The deep reliable supporting course 8 of pile foundation, embankment occurs to be produced between certain sedimentation and armored concrete support rail beam 9 when coming to nothing, and pile foundation is held Carrying structure 3 can still bear negative friction and provide stronger bearing capacity, with stronger longitudinal, vertical and lateral stability. Two line reinforced concrete beam type structures are connected by sharing base plate, further increase the lateral stiffness and stability of structure.

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 low putting produce between circuit support rail girder construction faulting of slab ends sedimentation；It is low Put the other end of circuit armored concrete support rail beam base plate 2 be embedded in it is stable it is low put in line construction, its sedimentation puts circuit with low Structure is consistent, is put line construction Jing basement process and is filled after compacting sedimentation value in controlled range due to low, therefore, support rail Sedimentation between beam two ends be located at bridge abutment 12 and it is low put between line construction, close 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 causes the partial pressing of structure to destroy.

The specific making step of this 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) excavating cut slope side slope carries out necessary bedding and changes to fill out to designing at road bed absolute altitude according to design requirement；Ground After the completion of process, by changeover portion design requirement fill it is low after platform put under circuit support rail beam geotechnique basis, 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 is filled and fill again after detection meets the requirements last layer, until armored concrete holds At the absolute altitude of beam-and-rail base plate bottom surface；

(3) subgrade cross section, vertical section direction construction drill bored concrete pile are in reinforced concrete floor bottom surface absolute altitude, i.e., Pile foundation bearing structure 3, drilled pile construction should adopt the construction technology little to filling roadbed disturbance；Reaching in cast-in-situ bored pile will After seeking intensity, by code requirement pile crown, colligation concrete floor and the connection reinforcing bar with stake are amputated；

(4) high-strength wearable sliding layer is laid on abutment in armored concrete support rail beam and abutment overlap joint, using entirety Template carries out formwork erection to armored concrete support rail beam, and each part concrete reaches and distinguish after design strength form removal, according to setting Meter section is long to vertical to joist 90, convex gear platform 91, armored concrete support rail beam base plate 2 and the merogenesis of reinforced concrete beam type structure 1 Mould, the face that backfills between reinforced concrete beam type structure is made intilted weathering and carries out top layer waterproof by design requirement, complete Into the installation of the grade built-in fitting of pin 15, one-time-concreting molding, all kinds of built-in fittings such as sleeper pedestal connection reinforcing bar is carried out before pouring, is led The positioning of trajectory bearing built-in fitting etc. and installation；

(5) wear-resisting sliding layer is laid on bridge abutment 12 in armored concrete support rail beam 9 and the overlap joint of bridge abutment 12 16, formwork erection, and one-time-concreting base plate and girder structure concrete are carried out to armored concrete support rail beam 9 using integral mold plate, pour The positioning of built-in fitting (sleeper pedestal connection reinforcing bar, water conservancy diversion rail bearing built-in fitting etc.) is carried out before building and is installed；

(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 To limit this utility model, all any modifications made within spirit of the present utility model and principle, equivalent and change Enter, should be included within protection domain of the present utility model.

Claims (6)

1. medium-and low-speed maglev traffic engineering two-wire excavation location independence pier stud type support rail beam transition section structure, it is characterised in that bag Include pile foundation bearing structure, armored concrete support rail beam base plate, two placing of reinforcement concrete beam-type structures, support rail beam both sides to fill out Material, bridge abutment and headwall, wherein,

The pile foundation bearing structure is provided with many, is vertically arranged per pile foundation bearing structure described in root, and per stake described in root Accept the armored concrete support rail beam base plate in the top of base bearing structure；

The reinforced concrete beam type structure is accepted on the top of the armored concrete support rail beam base plate, and the pile foundation is carried The top of structure is embedded in the armored concrete support rail beam base plate and just connects with it, the armored concrete support rail beam base plate with it is described Reinforced concrete beam type structural integrity pours molding so as to collectively form armored concrete support rail beam；

Wired weathering section is set described in two rows between reinforced concrete beam type structure, and weathering section has horizontal between the line The gradient and head fall, for current are introduced into two adjacent sections armored concrete support rail beam base plate internode expansion joint further by water Stream is discharged；

The support rail beam both sides backfill filler is arranged on soft stratum, and is arranged by support rail beam both sides backfill filler There is the first gutter, first gutter is provided with the first weathering away from the side that the support rail beam both sides backfill filler；

The armored concrete support rail beam base plate is located in support rail beam both sides backfill filler；

Lower end per pile foundation bearing structure described in root is stretched in supporting course through after the soft stratum, to produce in soft stratum During sedimentation, the pile foundation bearing structure can bear negative friction, so as to provide stable holding to reinforcing bar armored concrete support rail beam Power is carried, in case the differential settlement of support rail beam both sides backfill filler reduces vertical, the vertical and horizontal of armored concrete support rail beam The adverse effect that rigidity is produced；

One end of the armored concrete support rail beam base plate is overlapped on the bridge abutment, and both are vertical by pin release To constraint, and limit 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 respectively with the support rail beam both sides backfill filler of respective side, for the gear shield support rail beam both sides Backfill filler；

The second gutter is provided with by the headwall, second gutter is provided with the second draining away from the side of the headwall Slope.

2. independence pier stud type support rail beam changeover portion in medium-and low-speed maglev traffic engineering two-wire excavation location according to claim 1 Structure, it is characterised in that the pile foundation bearing structure is cast-in-situ bored pile, and the armored concrete support rail beam bottom is stretched on its top In plate and the steel reinforcement cage of cast-in-situ bored pile is also stretched in the armored concrete support rail beam base plate.

3. independence pier stud type support rail beam changeover portion in medium-and low-speed maglev traffic engineering two-wire excavation location according to claim 1 Structure, it is characterised in that pile foundation bearing structure described in all these is arranged in ranks.

4. independence pier stud type support rail beam changeover portion in medium-and low-speed maglev traffic engineering two-wire excavation location 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 ‰.

5. independence pier stud type support rail beam changeover portion in medium-and low-speed maglev traffic engineering two-wire excavation location 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 bridge Wear-resisting sliding layer is provided between platform.

6. independence pier stud type support rail beam changeover portion in medium-and low-speed maglev traffic engineering two-wire excavation location according to claim 1 Structure, it is characterised in that the pin includes pre-buried connection reinforcing bar, Colophonium hemp cut and stainless steel sleeve pipe, the pre-buried connection steel Muscle is located in the stainless steel sleeve pipe and is fixedly installed between the two the Colophonium hemp cut.