CN206157481U - Compound framing type support rail roof beam transition section structure of moderate -low speed magnetic levitation double -line excavation location pile foundation - Google Patents

Compound framing type support rail roof beam transition section structure of moderate -low speed magnetic levitation double -line excavation location pile foundation Download PDF

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Publication number
CN206157481U
CN206157481U CN201621057108.5U CN201621057108U CN206157481U CN 206157481 U CN206157481 U CN 206157481U CN 201621057108 U CN201621057108 U CN 201621057108U CN 206157481 U CN206157481 U CN 206157481U
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China
Prior art keywords
support rail
rail beam
pile foundation
base plate
bearing structure
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CN201621057108.5U
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Chinese (zh)
Inventor
郭建湖
李小和
赵新益
姜鹰
姚洪锡
李巍
王勇刚
杨辉建
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China Railway Siyuan Survey and Design Group Co Ltd
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China Railway Siyuan Survey and Design Group Co Ltd
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Abstract

The utility model belongs to the technical field of the low circuit of putting of well low -speed maglev traffic engineering to compound framing type support rail roof beam transition section structure of moderate -low speed magnetic levitation double -line excavation location pile foundation is disclosed, backfill filler, bridge abutment and headwall including first pile foundation load bearing structure, the compound load bearing structure of supporting beam of pile foundation, two rows of reinforced concrete support rail breast boards, two rows of reinforced concrete beam structure, support rail roof beam both sides, first pile foundation load bearing structure is provided with many, reinforced concrete beam structure is accepted on the top of reinforced concrete support rail breast board, the other first escape canal that is provided with of packing is backfilled to support rail roof beam both sides, and one side that support rail roof beam both sides backfill filler was kept away from in first escape canal is provided with 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

The compound framing type support rail beam transition section structure of medium-and low-speed maglev two-wire excavation location pile foundation
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 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 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 lines 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 environment 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, the utility model provides medium-and low-speed maglev two-wire excavation ground The compound framing type support rail beam transition section structure of section pile foundation, can avoid the low defect for putting circuit support rail girder construction of tradition, construction quality Easily control, long-time stability are more preferable, and low speed magnetic suspension traffic engineering track structure is tied to support rail beam during it both meets Structure deforms and the high requirement of settlement after construction, and the requirement of bedding long-time stability, durability and construction quality controllability is met again.
For achieving the above object, the utility model provides the compound framing type of medium-and low-speed maglev two-wire excavation location pile foundation and holds Beam-and-rail transition section structure, it is characterised in that including the first pile foundation bearing structure, pile foundation joist composite bearing structure, two placing of reinforcements Concrete support rail beam base plate, two placing of reinforcement concrete beam-type structures, support rail beam both sides backfill filler, bridge abutment and headwall, its In,
The first pile foundation bearing structure and the pile foundation joist composite bearing structure accept the armored concrete jointly Support rail beam base plate;
The first pile foundation bearing structure is provided with many, is vertically arranged per the first pile foundation bearing structure described in root, and And the armored concrete support rail beam base plate is accepted on the top per the first pile foundation bearing structure described in root, first pile foundation is held The top of load structure is embedded in the armored concrete support rail beam base plate and just connects with it;
Reinforced concrete beam type structure described in two rows is accepted at the top of the armored concrete support rail beam base plate, and is often arranged In armored concrete support rail beam base plate, expansion joint is reserved described in two adjacent sections between armored concrete support rail beam base plate;
The pile foundation joist composite bearing structure setting has multiple, and in every placing of reinforcement concrete support rail beam base plate, phase Pile foundation joist composite bearing structure described in one is respectively provided with the expansion joint of the adjacent two sections armored concrete support rail beam base plate, with For the two sections armored concrete support rail beam base plate for supporting this adjacent, each described pile foundation joist composite bearing structure is wrapped Reinforced concrete supporting beam and the second pile foundation bearing structure are included, and institute is accepted on the top per the second pile foundation bearing structure described in root Reinforced concrete supporting beam is stated, the reinforced concrete supporting beam accepts the armored concrete support rail beam base plate;
The top of the second pile foundation bearing structure is embedded in the reinforced concrete supporting beam and just connects with it, the reinforced concrete Native joist has just connect or has overlapped with the armored concrete support rail beam base plate;
Filler between support rail beam is set described in two rows between armored concrete support rail beam base plate;
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 armored concrete support rail beam base plate pours shaping with the reinforced concrete beam type structural integrity thereon, from And collectively form armored concrete support rail beam;
Filler between support rail beam is set described in two rows between armored concrete support rail beam base plate;
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 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 the first pile foundation bearing structure described in root is stretched in supporting course through after 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, in case the differential settlement of support rail beam both sides backfill filler reduces the perpendicular of armored concrete support rail beam To the adverse effect that, vertical and horizontal rigidity 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 first pile foundation bearing structure is cast-in-situ bored pile, and reinforced concrete supporting beam is firm with support rail beam base plate Connect or overlap, just connect with pile foundation bearing structure.
Preferably, the first 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, 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 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 adopt reinforced concrete Soil scene one-piece casting, the two composition integral reinforced concrete structure is floated to the magnetic for directly taking on track load and track transmission Train load, then deadweight and upper load are passed to and its rigidly connected first pile foundation bearing structure, structural reliability is high.
(2) the first pile foundation bearing structure of the present utility model is goed deep in supporting course, when roadbed produces certain sedimentation, first Base bearing structure can still bear negative friction and provide stronger bearing capacity, it is to avoid make because foundation stabilization quality is wayward Into impact of the differential settlement to support rail beam vertical and horizontal rigidity, structure vertical cross stiffness is more excellent.
(3) the first pile foundation bearing structure control settlement effect of the present utility model preferably, therefore can reduce cutting bedding and change Fill out thickness, need to only meet the requirement of basic replacement thickness, can investment reduction, it is the reduction of erection time, excellent with obvious technology and economy Gesture.
(4) reinforced concrete supporting beam that pile foundation bearing structure and reinforced concrete floor are arranged, 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 opposing differential settlement deformation, the quantity of transverse pile foundation can have been reduced, reduce investment.
(5) adjacent armored concrete support rail beam base plate shares pile foundation joist composite bearing structure, and in adjacent steel Expansion joint is reserved between reinforced concrete support rail beam base plate, impact failure of the section by train load of encorbelmenting can be avoided, and reduce temperature The impact of stress and shrinkage and creep.
(6) 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 line transition section F with low The smoothly transition of rail.
(7) arranging armored concrete support rail beam base plate by framing type is divided to two rows to arrange, and can avoid making in train load Deformed in multi-direction bending with lower support rail beam base plate and complex stress condition, the support rail beam increasingly complex compared to traditional stress Right, framing pile foundation joist type support rail beam can reduce impact of the buckling deformation to support rail beam base plate and top girder structure.
Description of the drawings
Fig. 1 is schematic longitudinal section of the present utility model;
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 schematic diagram that armored concrete support rail beam base plate is overlapped on bridge abutment in the utility model;
Fig. 5 is that the utility model pile foundation joist has just connect connection diagram with armored concrete support rail beam base plate.
Fig. 6 is that the utility model pile foundation joist overlaps connection diagram with armored concrete support rail beam base plate.
Fig. 7 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 enforcement Example, is further elaborated to the utility model.It should be appreciated that specific embodiment described herein is only to explain The utility model, is not used to limit the utility model.Additionally, institute in the 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. 7, 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 base 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 base plate 2;
The first pile foundation bearing structure 3 is provided with many, is vertically arranged per the first pile foundation bearing structure 3 described in root, And accept the armored concrete support rail beam base plate 2 per the top of the first pile foundation bearing structure 3 described in root, described first The top of base bearing structure 3 is embedded in the armored concrete support rail beam base plate 2 and just connects with it;
Reinforced concrete beam type structure 1 described in two rows of top undertaking of the armored concrete support rail beam base plate 2, and often In placing of reinforcement concrete support rail beam base plate 2, expansion joint is set between armored concrete support rail beam base plate 2 described in two adjacent sections;
The pile foundation joist composite bearing structure 90 be provided with it is multiple, and per placing of reinforcement concrete support rail beam base plate 2 in, Pile foundation joist composite bearing structure described in one is respectively provided with the expansion joint of the adjacent two sections armored concrete support rail beam base plate 2 90, for the two sections armored concrete support rail beam base plate 2 for supporting this adjacent, each described pile foundation joist composite bearing knot Structure 90 includes the pile foundation bearing structure 902 of reinforced concrete supporting beam 901 and second, and per the second pile foundation bearing structure described in root The reinforced concrete supporting beam 901 is accepted on 902 top, and the reinforced concrete supporting beam 901 accepts the armored concrete Support rail beam base plate 2;
The top of the second pile foundation bearing structure 902 is embedded in the reinforced concrete supporting beam 901 and just connects with it, the steel Reinforced concrete joist 901 has just connect or has overlapped with the armored concrete support rail beam base plate 2;
Filler 21 between support rail beam is set described in two rows between armored concrete support rail beam base plate 2;
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;
The both sides of the reinforced concrete supporting beam 901 are provided with horizontal for limiting the armored concrete support rail beam base plate 2 The convex gear platform 91 of displacement;
The armored concrete support rail beam base plate 2 and the formed by integrally casting of reinforced concrete beam type structure 1 shaping 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, first gutter 7 is provided with row away from the side that the support rail beam both sides backfill filler 4 Water slope 8;
The armored concrete support rail beam base plate 2 is located in support rail beam both sides backfill filler 4;
Lower end per the first pile foundation bearing structure 3 described in root through stretching in supporting course 6 after the soft stratum 5, 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, in case the differential settlement of support rail beam both sides backfill filler 4 reduces armored concrete support rail The adverse effect that the vertical of beam 9, vertical and horizontal rigidity are 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 first pile foundation bearing structure 3 is cast-in-situ bored pile, and joist 90 has just connect or taken with the base plate 2 of support rail beam 9 Connect, just connect with 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 adopts and just connects.
First pile foundation bearing structure 3 described in all these is arranged in ranks.
Further, the armored concrete support rail beam base 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 Rust steel sleeve 15.3, 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 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.
Armored concrete support rail beam 9 of the present utility model adopts 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 reduce cutting bedding replacement thickness, need to only meet the requirement of basic replacement thickness, can save About invest, the reduction of erection time, with obvious technology and economic advantages.
First pile foundation bearing structure 3 adopts 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 6, when soft stratum 5 produces sedimentation, Pile foundation carries knot and can still bear negative friction and provide stronger bearing capacity to armored concrete support rail beam base plate 2.
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.
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 impact of power and shrinkage and creep.
The reinforced concrete supporting beam 90 that pile foundation bearing structure 3 and reinforced concrete floor 2 are arranged, 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, The lateral stiffness of structure and the ability of opposing differential settlement deformation are increased, the quantity of transverse pile foundation can be reduced, reduce investment.
Armored concrete support rail beam base plate 2 is arranged by framing type is divided to two rows to arrange, 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 support rail The impact of beam base plate and the structure of top beam type 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) 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., First pile foundation bearing structure 3, drilled pile construction should adopt the construction technology little to filling roadbed disturbance;Reach in cast-in-situ bored pile To after desired strength, by code requirement pile crown, colligation concrete floor and the connection reinforcing bar with stake are amputated;
It is (3) long to armored concrete support rail beam base plate 2 and the merogenesis formwork erection of reinforced concrete beam type structure 1 according to design section, 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) 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 reaches and removed after design strength Template;
It is (5) long to armored concrete support rail beam base plate 2 and the merogenesis formwork erection of reinforced concrete beam type structure 1 according to design section, 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, carry out before pouring all kinds of built-in fittings such as pin, sleeper pedestal connection reinforcing bar, the positioning of water conservancy diversion rail bearing built-in fitting etc. with Install;
(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 the 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 (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 the One pile foundation bearing structure, pile foundation joist composite bearing structure, two placing of reinforcement concrete support rail beam base plates, two placing of reinforcement beams of concretes Formula structure, support rail beam both sides backfill filler, bridge abutment and headwall, wherein,
The first pile foundation bearing structure and the pile foundation joist composite bearing structure accept the armored concrete support rail jointly Beam base plate;
The first pile foundation bearing structure is provided with many, is vertically arranged per the first pile foundation bearing structure described in root, and often The armored concrete support rail beam base plate is accepted on the top of the first pile foundation bearing structure described in root, and first pile foundation carries knot The top of structure is embedded in the armored concrete support rail beam base plate and just connects with it;
Reinforced concrete beam type structure described in two rows is accepted at the top of the armored concrete support rail beam base plate, and per placing of reinforcement In concrete support rail beam base plate, expansion joint is set between armored concrete support rail beam base plate described in two adjacent sections;
The pile foundation joist composite bearing structure setting has multiple, and in every placing of reinforcement concrete support rail beam base plate, it is adjacent The pile foundation joist composite bearing structure is respectively provided with the expansion joint of the two sections armored concrete support rail beam base plate, for propping up This adjacent two sections armored concrete support rail beam base plate is supportted, each described pile foundation joist composite bearing structure includes reinforcing bar Concrete joist and the second pile foundation bearing structure, and the reinforcing bar is accepted on the top per the second pile foundation bearing structure described in root Concrete joist, the reinforced concrete supporting beam accepts the armored concrete support rail beam base plate;
The top of the second pile foundation bearing structure is embedded in the reinforced concrete supporting beam and just connects with it, the armored concrete support Beam has just connect or has overlapped with the armored concrete support rail beam base plate;
Filler between support rail beam is set described in two rows between armored concrete support rail beam base plate;
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 convex for limiting the armored concrete support rail beam base plate lateral displacement is provided with the reinforced concrete supporting beam Gear platform;
The armored concrete support rail beam base plate pours shaping with the reinforced concrete beam type structural integrity 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 arranged by support rail beam both sides backfill filler There is the first gutter, first gutter is provided with 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 the first pile foundation bearing structure described in root is stretched in supporting course through after the soft stratum, with soft stratum When producing sedimentation, the first pile foundation bearing structure can bear negative friction, so as to provide to reinforcing bar armored concrete support rail beam Stable bearing capacity, in case the differential settlement of support rail beam both sides backfill filler reduces the vertical, vertical of armored concrete support rail beam To the adverse effect produced with lateral stiffness;
One end of the armored concrete support rail beam base plate is overlapped on the bridge abutment, and both are released by pin connection Longitudinal restraint is put, and limits lateral displacement;
The both sides of one end that the armored concrete support rail beam 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. pile foundation compound framing type support rail beam changeover portion in medium-and low-speed maglev two-wire excavation location according to claim 1 is tied Structure, it is characterised in that the first pile foundation bearing structure is cast-in-situ bored pile, reinforced concrete supporting beam just connects with support rail beam base plate Or overlap joint, just connect with pile foundation bearing structure.
3. pile foundation compound framing type support rail beam changeover portion in medium-and low-speed maglev two-wire excavation location according to claim 1 is tied Structure, it is characterised in that overlapped using pin in position reinforced concrete supporting beam and the support rail beam base plate of support rail beam internode seam, remaining Position adopts and just connects or overlap.
4. pile foundation compound framing type support rail beam changeover portion in medium-and low-speed maglev two-wire excavation location according to claim 1 is tied Structure, it is characterised in that the first pile foundation bearing structure described in all these is arranged in ranks.
5. pile foundation compound framing type support rail beam changeover portion in medium-and low-speed maglev two-wire excavation location according to claim 1 is tied 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. pile foundation compound framing type support rail beam changeover portion in medium-and low-speed maglev two-wire excavation location according to claim 1 is tied 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.
7. pile foundation compound framing type support rail beam changeover portion in medium-and low-speed maglev two-wire excavation location according to claim 1 is tied 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.
CN201621057108.5U 2016-09-15 2016-09-15 Compound framing type support rail roof beam transition section structure of moderate -low speed magnetic levitation double -line excavation location pile foundation Withdrawn - After Issue CN206157481U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106283946A (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 excavation location pile foundation is combined framing type support rail beam transition section structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106283946A (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 excavation location pile foundation is combined framing type support rail beam transition section structure

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