CN106283942B - Medium-and low-speed maglev traffic engineering two-wire embankment location pile foundation combined type support rail girder construction - Google Patents
Medium-and low-speed maglev traffic engineering two-wire embankment location pile foundation combined type support rail girder construction Download PDFInfo
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- CN106283942B CN106283942B CN201610826060.8A CN201610826060A CN106283942B CN 106283942 B CN106283942 B CN 106283942B CN 201610826060 A CN201610826060 A CN 201610826060A CN 106283942 B CN106283942 B CN 106283942B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B25/00—Tracks for special kinds of railways
- E01B25/30—Tracks for magnetic suspension or levitation vehicles
- E01B25/305—Rails or supporting constructions
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Abstract
Line technology field is put the invention belongs to middle low speed magnetic suspension traffic engineering is low, and disclose medium-and low-speed maglev traffic engineering two-wire embankment location pile foundation combined type support rail girder construction, including roadbed filling under the first pile foundation bearing structure, pile foundation joist composite bearing structure, armored concrete support rail beam bottom plate, two placing of reinforcement concrete beam-type structures, support rail beam and support rail beam both sides backfill filler, the first pile foundation bearing structure is provided with more;Accept the reinforced concrete beam type structure in the top of armored concrete support rail beam bottom plate;Support rail beam both sides backfill filler is accepted by roadbed filling under the support rail beam.The present invention can avoid traditional low the defects of putting circuit support rail girder construction, long-time stability are more preferable, and its both meet in low speed magnetic suspension traffic engineering track structure to support rail girder construction deformation and settlement after construction high request, meet the requirement of the controllability of bedding long-time stability, durability and construction quality again, and economy is more preferably.
Description
Technical field
Line technology field is put the invention belongs to middle low speed magnetic suspension traffic engineering is low, more particularly, to middle low speed magnetic
Floating traffic engineering two-wire embankment location support rail girder construction pattern.
Background technology
Middle low speed magnetic suspension track traffic belongs to a kind of novel traffic mode, and achievement in research both domestic and external is less, the whole world
The circuit for opening operation is even more minority.The middle low speed magnetic suspension railway business that only in March, 2005, Japan's construction was opened at present is transported
The middle low speed magnetic suspension railway business operating line that line-the East Hillside Line and in June, 2014, South Korea opened.And the middle low speed of China
Magnetic suspension traffic only has National University of Defense technology's test wire, Green City Mountain test wire, Tangshan experiment line at present, but do not put into effect
Formal circuit, and based on elevated structure, it is rarely seen about the low research and application put in terms of circuit support rail girder construction.
Middle low speed magnetic suspension hang traffic civil engineering part mainly comprising bridge, it is low put circuit, station and rolling stock section, it is low to put circuit
It is made up of roadbed under the section of track, support rail beam and support rail beam, the support rail beam of supporting track is arranged on the roadbed being made up of earth structure
On, the operation of middle low speed magnetic suspension train includes suspending, be oriented to, drive and braking being required for what is completed on support rail beam.Magnetic
Aerotrain is very high to line construction deformation requirements, because the deformation of structure very little may influence comfortableness even prestige by bus
Traffic safety is coerced, so the design of support rail beam is particularly significant.
Existing support rail girder construction is applied has problems with middle low speed magnetic suspension traffic low put on circuit:
(1) existing low circuit support rail girder construction of putting is arranged on embankment earth structure, embankment earth structure by
Filler fills compacting and formed, and compaction quality is difficult to control, and the later stage easily deforms, and influences the integral rigidity of structure, and after work
Sedimentation is unmanageable.
(2) the low settlement after construction requirement for putting circuit support rail girder construction to roadbed and ground is high, and is routed through the ground in region
Matter condition is typically all complicated and changeable, therefore also needs to carry out consolidation process, roadbed filling slope groundwork to ground simultaneously
Area increase is reinforced, cost is high, long in time limit;And basement process belongs to disguised engineering, arranged using the reinforced soft soil ground of routine
Apply and reinforced, construction quality is difficult to control.
(3) there is vulnerability because filler fills the low circuit earth structure of putting for being compacted form, and construction quality is not easy
Control, relatively easily produces differential settlement, causes bedding vertical and horizontal bad stability under support rail beam, so that support rail beam
The resistance to overturning of structure is damaged.
The low circuit support rail beam of putting of magnetic suspension is higher to post-construction settlement of subgrade, bedding long-time stability and life requirement, when
When circuit is located at foundation stabilization location, traditional support rail girder construction pattern is taken construction period length to be present, construction quality is not easily-controllable
System, the defects of whole structural stability is poor and less economical.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the invention provides medium-and low-speed maglev traffic engineering two-wire to fill out
Square location pile foundation combined type support rail girder construction, traditional low the defects of putting circuit support rail girder construction can be avoided, construction quality is easier
Control, long-time stability are more preferable, and its both meet in low speed magnetic suspension traffic engineering track structure to support rail girder construction deform
With the high request of settlement after construction, meet the requirement of the controllability of bedding long-time stability, durability and construction quality again, and it is economical
Property is more preferably.
To achieve the above object, it is proposed, according to the invention, provide medium-and low-speed maglev traffic engineering two-wire embankment location pile foundation and answer
Box-like support rail girder construction, it is characterised in that including the first pile foundation bearing structure, pile foundation joist composite bearing structure, reinforced concrete
Roadbed filling and support rail beam both sides backfill filler under native support rail beam bottom plate, two placing of reinforcement concrete beam-type structures, support rail beam, its
In,
The first pile foundation bearing structure and the pile foundation joist composite bearing structure accept the armored concrete jointly
Support rail beam bottom plate;
The first pile foundation bearing structure is provided with more, and the every first pile foundation bearing structure is vertically arranged, and
And the armored concrete support rail beam bottom plate is accepted on the top of the every first pile foundation bearing structure, first pile foundation is held
Carry structure and be embedded in the armored concrete support rail beam bottom plate and its rigid connection;
Reinforced concrete beam type structure described in two rows is accepted on the top of the armored concrete support rail beam bottom plate, and adjacent
Expansion joint is set between the two section armored concrete support rail beam bottom plates;
The pile foundation joist composite bearing structure setting has the two multiple and adjacent section armored concrete support rail beams
A pile foundation joist composite bearing structure is respectively provided with the expansion joint of bottom plate, for supporting this two blocks of adjacent reinforcing bar
Concrete support rail beam bottom plate, each pile foundation joist composite bearing structure includes reinforced concrete supporting beam and the second pile foundation is held
Structure is carried, and the reinforced concrete supporting beam is accepted on the top of the every second pile foundation bearing structure, and the reinforcing bar mixes
Solidifying native joist accepts the armored concrete support rail beam bottom plate;
The top of the second pile foundation bearing structure is embedded in the reinforced concrete supporting beam, the reinforced concrete supporting beam with
The armored concrete support rail beam bottom plate rigid connection or overlap joint;
The reinforced concrete supporting beam both sides are provided with for limiting the armored concrete support rail beam bottom plate lateral displacement
Convex block machine;
Accept the reinforced concrete beam type structure, and the reinforcing bar in the top of the armored concrete support rail beam bottom plate
Concrete support rail beam bottom plate and the reinforced concrete beam type structural integrity pouring molding, hold so as to collectively form armored concrete
Beam-and-rail;
Wired weathering section be set between reinforced concrete beam type structure described in two rows, and weathering section has between the line
Cross fall and head fall, for by current introduce two adjacent sections armored concrete support rail beam bottom 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 bottom plate under the support rail beam, with
It is flat for providing construction for the armored concrete support rail beam bottom plate, reinforced concrete supporting beam and support rail beam both sides backfill filler
Platform, and provide lateral support for the first pile foundation bearing structure;Wherein, the shallow layer reinforcement area is arranged on the shallow of soft stratum
Top layer, and the longitudinal direction one of roadbed filling and the reinforced concrete beam type structure under the shallow layer reinforcement area, the support rail beam
Cause;
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 bottom plate, to play protection to the armored concrete support rail beam bottom plate
The transverse shifting of the armored concrete support rail beam bottom 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 weathering;
The lower end of the every first pile foundation bearing structure sequentially passes through roadbed filling, the shallow-layer under the support rail beam and added
Stretched into after Gu Qu and the soft stratum in supporting course, with soft stratum produce sedimentation when, the first pile foundation bearing structure
Negative friction can be born, so as to provide stable carrying to armored concrete support rail beam bottom plate and reinforced concrete beam type structure
Power, the vertical of armored concrete support rail beam, vertical and horizontal rigidity are produced with the differential settlement reduced because of filler filling body
Adverse effect.
Preferably, the first pile foundation bearing structure is cast-in-situ bored pile, and reinforced concrete supporting beam is held with armored concrete
Beam-and-rail bottom plate rigid connection or overlap joint, with pile foundation bearing structure rigid connection.
Preferably, pin is used with armored concrete support rail beam bottom plate in the position reinforced concrete supporting beam of support rail beam internode seam
Nail overlap joint, remaining position uses rigid connection.
Preferably, the height and the height phase of the armored concrete support rail beam bottom plate of the support rail beam both sides backfill filler
Deng.
Preferably, all these described first pile foundation bearing structures are arranged in ranks.
Preferably, the lower end of the every second pile foundation bearing structure sequentially passes through roadbed filling, institute under the support rail beam
Stretched into after stating shallow layer reinforcement area and the soft stratum in supporting course.
Preferably, the cross fall of weathering section is 3%~5% between the line, and head fall is not less than 2 ‰.
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 present invention compared with prior art, it can obtain down and show
Beneficial effect:
(1) armored concrete support rail beam bottom plate of the invention, reinforced concrete beam type structure are showed using armored concrete
Field one-piece casting, the two forms integral reinforced concrete structure to directly take on the magnetic-levitation train of track load and track transmission
Load, then deadweight and upper load are passed to and its rigidly connected first pile foundation bearing structure, structural reliability height.
(2) the first pile foundation bearing structure of the invention is goed deep into supporting course, and when embankment produces certain sedimentation, the first pile foundation is held
Can still negative friction be born and provide stronger bearing capacity by carrying structure, be avoided because filling compaction and foundation stabilization quality are not easy
Vertical to support rail beam, vertical and horizontal rigidity influence is settled caused by control, structure vertical cross stiffness and structural reliability are more
It is excellent.
(3) circuit soft soil zone is put low, needs the superficial layer progress to soft stratum necessary according to embankment stability
Reinforcing, its reinforcement depth controls by embankment stability, and tradition during compared to by settling and stablize Two indices control is solely
For base reinforcing mode, shallow layer reinforcement area reinforcement depth is small, with reference to the first pile foundation bearing structure can effectively control roadbed reclamation and
Post-construction settlement of subgrade.Non- soft soil zone can be more avoided after embankment slope at the foundation stabilization of caused wide area
Reason, and the first pile foundation bearing structure construction quality is more easy to control, can effectively control construction quality, investment reduction, shorten the duration, tool
There are obvious technology and economic advantages.
(4) while by two placing of reinforcement concrete beam-type structures of two-wire by armored concrete support rail beam floor combination one
Rise, the lateral stiffness of reinforced concrete beam type structure can be effectively increased, left and right two is saved reinforced concrete beam type structure and be placed in
On rigidity identical armored concrete support rail beam bottom plate, the lateral stability of reinforced concrete beam type structure can be effectively increased,
The relative settlement between reinforced concrete beam type structure is controlled, is also beneficial to maintenance and maintenance during operation, measure is simple, easily applies
Work, cost save, effect is good.
(5) reinforced concrete supporting beam that pile foundation bearing structure and armored concrete support rail beam bottom plate are set, can subtract significantly
The stress concentration phenomenon of armored concrete support rail beam bottom plate at small pile foundation bearing structure;Further, since reinforced concrete supporting beam
Lateral connection acts on, and also increases the lateral stiffness of structure and the ability of resistance differential settlement deformation, can reduce transverse pile foundation
Quantity, reduce investment.
(6) adjacent segments armored concrete support rail beam bottom plate internode shares pile foundation joist composite bearing structure, and adjacent
Armored concrete support rail beam bottom plate between reserve expansion joint, impact failure of the section by train load of encorbelmenting can be avoided, and reduce
The influence of temperature stress and shrinkage and creep.
Brief description of the drawings
Fig. 1 is the schematic longitudinal section of the present invention;
Fig. 2 is along the profile of I-I line in Fig. 1;
Fig. 3 is along the profile of II-II line in Fig. 1;
Fig. 4 is the distribution schematic diagram of the first pile foundation bearing structure and pile foundation joist composite bearing structure in the present invention;
Fig. 5 is the connection diagram of armored concrete support rail beam bottom plate and the first pile foundation bearing structure in the present invention.
Fig. 6 is pile foundation reinforced concrete supporting beam of the present invention and armored concrete support rail beam bottom plate rigid connection connection diagram.
Fig. 7 is pile foundation reinforced concrete supporting beam of the present invention and armored concrete support rail beam bottom plate overlap joint connection diagram.
Fig. 8 is the cross-sectional view of pin in the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Conflict can is not formed each other to be mutually combined.
1~Fig. 5 of reference picture, medium-and low-speed maglev traffic engineering two-wire embankment location pile foundation combined type support rail girder construction, including
First pile foundation bearing structure 3, pile foundation joist composite bearing structure 90, armored concrete support rail beam bottom plate 2, two placing of reinforcement concrete
Roadbed filling 5 and support rail beam side two backfill filler 4 under girder structure 1, support rail beam, wherein,
The first pile foundation bearing structure 3 and the pile foundation joist composite bearing structure 90 accept the reinforced concrete jointly
Native support rail beam bottom plate 2;
The first pile foundation bearing structure 3 is provided with more, and the every first pile foundation bearing structure 3 is vertically arranged,
And the armored concrete support rail beam bottom plate 2 is accepted on the top of the every first pile foundation bearing structure 3, described first
The top of base bearing structure 3 is embedded in the armored concrete support rail beam bottom plate 2 and its rigid connection;
Accept reinforced concrete beam type structure 1 described in two rows, and phase in the top of the armored concrete support rail beam bottom plate 2
Expansion joint is set between the section of the neighbour two armored concrete support rail beam bottom plate 2;
The pile foundation joist composite bearing structure 90 is provided with the two multiple and adjacent section armored concrete support rails
A pile foundation joist composite bearing structure 90 is respectively provided with the expansion joint of beam bottom plate 2, for supporting this two pieces of adjacent institute
Armored concrete support rail beam bottom plate 2 is stated, each pile foundation joist composite bearing structure 90 includes reinforced concrete supporting beam 901
The reinforced concrete is accepted with the top of the second pile foundation bearing structure 902, and the every second pile foundation bearing structure 902
Native joist 901, the reinforced concrete supporting beam 901 accept the armored concrete support rail beam bottom plate 2;
The top of the second pile foundation bearing structure 902 is embedded in the reinforced concrete supporting beam 901 and its rigid connection, except two sections
Outside at the expansion joint of armored concrete support rail beam bottom plate 2, the top of remaining position the second pile foundation bearing structure 902 should still be embedded in reinforcing bar
The rigid connection therewith of concrete support rail beam bottom plate 2;
The both sides of reinforced concrete supporting beam 901 are provided with for limiting the armored concrete support rail beam bottom plate 2 laterally
The convex block machine 91 of displacement;
Accept the reinforced concrete beam type structure 1, and the steel in the top of the armored concrete support rail beam bottom plate 2
Reinforced concrete support rail beam bottom plate 2 is molded with the formed by integrally casting of reinforced concrete beam type structure 1, so as to collectively form reinforced concrete
Native support rail beam 9;
Wired weathering section be set between reinforced concrete beam type structure 1 described in two rows, and weathering section has 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 bottom plate 2
And then current are discharged;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.
Under the support rail beam roadbed filling 5 be arranged on shallow layer reinforcement area 6 and the armored concrete support rail beam bottom plate 2 it
Between, carried for backfilling filler 4 for the armored concrete support rail beam bottom plate 2, reinforced concrete supporting beam 901 and support rail beam both sides
Lateral support is provided for construction platform, and for the pile foundation bearing structure 3;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 bottom plate 2, with to the armored concrete support rail beam bottom plate 2
The transverse shifting of the armored concrete support rail beam bottom plate 2 is shielded and constrained, and maintenance passage is provided;
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 first pile foundation bearing structure 3 sequentially passes through roadbed filling 5, the shallow-layer under the support rail beam
Stretched into after stabilization zone 6 and the soft stratum 7 in supporting course 8, so that when soft stratum 7 produces sedimentation, first pile foundation is held
Negative friction can be born by carrying structure 3, so as to be provided surely to armored concrete support rail beam bottom plate 2 and reinforced concrete beam type structure 1
Fixed bearing capacity, to reduce the sedimentation because of filler filling body 10 to vertical, the vertical and horizontal rigidity of armored concrete support rail beam 9
Caused adverse effect.
Further, the first pile foundation bearing structure 3 is cast-in-situ bored pile, and reinforced concrete supporting beam is held with armored concrete
Beam-and-rail bottom plate rigid connection or overlap joint, with pile foundation bearing structure rigid connection.Overlapped in the position of support rail beam internode seam using pin, remaining position
Put and use rigid connection.
The pin 12 includes pre-buried connection reinforcing bar 12.1, pitch hemp cut 12.2 and stainless steel sleeve pipe 12.3, described pre-buried
Connection reinforcing bar 12.1 is located in the stainless steel sleeve pipe 12.3 and the pitch hemp cut 12.2 is fixedly installed between the two.
The height of the support rail beam both sides backfill filler 4 is equal with the height of the armored concrete support rail beam bottom plate 2, institute
These the described first pile foundation bearing structures 3 having are arranged in ranks.The lower end of the every second pile foundation bearing structure 902 is successively
Stretched under through the support rail beam after roadbed filling 5, the shallow layer reinforcement area 6 and the soft stratum 7 in supporting course 8.
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 traditional foundation stabilization measure caused by engineering is huge, investment is big, long in time limit, and basement process and embankment
Construction quality is whard to control, bedding long-time stability and the problem of poor durability, so as to improve low circuit support rail girder construction of putting
Reliability, reduce the engineering risk of traditional structure pattern.
The armored concrete support rail beam 9 of the present invention uses reinforced concrete soil scene one-piece casting, to directly take on track lotus
Carry and the magnetic-levitation train load of track transmission, then will deadweight and upper load passes to and its rigidly connected first pile foundation carries
Structure 3, structural reliability is high, can save caused large area stiffening basic ground after traditional embankment slope.
First pile foundation bearing structure 3 uses cast-in-situ bored pile, and transverse direction and longitudinal direction, which has, is arranged with more reinforced concrete drills
Hole pouring pile, vertical and horizontal rigidity are big;And first pile foundation bearing structure 3 go deep into supporting course 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 bottom plate 2.
Simultaneously by two placing of reinforcement concrete beam-type structures of two-wire by armored concrete support rail beam floor combination together,
The lateral stiffness of reinforced concrete beam type structure can be effectively increased, left and right two is saved reinforced concrete beam type structure and is placed in rigidity
On identical armored concrete support rail beam bottom plate, the lateral stability of reinforced concrete beam type structure can be effectively increased, is controlled
Relative settlement between reinforced concrete beam type structure, is also beneficial to maintenance and maintenance during operation, measure is simple, easily construction,
Cost saves, effect is good.
The reinforced concrete supporting beam 901 that pile foundation bearing structure 3 and armored concrete support rail beam bottom plate 2 are set, can be significantly
Reduce the stress concentration phenomenon of armored concrete support rail beam bottom plate 2 at pile foundation bearing structure 3;Further, since armored concrete support
The lateral connection effect of beam 901, the lateral stiffness of structure and the ability of resistance differential settlement deformation are also increased, horizontal stroke can be reduced
To the quantity of pile foundation, investment is reduced.
The internode of adjacent segments armored concrete support rail beam bottom plate 2 shares pile foundation joist composite bearing structure, and adjacent
Expansion joint is reserved between armored concrete support rail beam bottom plate, impact failure of the section by train load of encorbelmenting can be avoided, and reduce temperature
Spend the influence of stress and shrinkage and creep.
It is low when putting circuit and passing through soft soil zone, should according to embankment stability need to carry out ground superficial layer it is necessary plus
Gu form shallow layer reinforcement area 6.The reinforcement depth in shallow layer reinforcement area 6 is controlled by embankment stability, and its reinforcement depth should be according to embankment
Raising, foundation condition are determined by stability calculation.Compared to by settling and stablizing traditional single ground during Two indices control
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, and investment is small, and more conducively after construction quality and work
The control of sedimentation, and save cost and shorten the duration.
Specific making step of the invention is as follows:
(1) smooth construction site, necessary shallow layer foundation consolidation process is carried out according to design requirement, forms shallow layer reinforcement area
6, placement in layers is then required according to embankment and is densified to armored concrete support rail beam bottom plate bottom surface absolute altitude;
(2) in armored concrete support rail beam bottom plate bottom surface, absolute altitude is in embankment subgrade cross section, the construction of vertical section direction is bored
Hole pouring pile, i.e. the first pile foundation bearing structure 3, drilled pile construction should use and small construction technology disturbed to railway embankment, must
Steel pile casting is set in embankment altitude range when wanting or draws hole;, will by specification after cast-in-situ bored pile reaches desired strength
Ask amputation pile crown, assembling reinforcement concrete support rail beam bottom plate and the connection reinforcing bar with stake;
(3) according to design attitude to reinforced concrete supporting beam 901, the formwork erection of convex block machine 91, one-time-concreting shaping, before pouring
Carry out all kinds of built-in fittings such as pin 12 and positioning and installation with the connection reinforcing bar of pile foundation, concrete are removed after reaching design strength
Template;
(4) grown according to design section to armored concrete support rail beam bottom plate 2 and the merogenesis formwork erection of reinforced concrete beam type structure 1,
Face is backfilled between reinforced concrete beam type structure to make intilted transverse drainage slope and longitudinal drainage slope and do by design requirement
Good top layer waterproof, one-time-concreting shaping, it is pre-buried that all kinds of built-in fittings such as sleeper pedestal connection reinforcing bar, water conservancy diversion rail bearing are carried out before pouring
The positioning and installation of part etc.;
(5) each part concrete distinguishes form removal after reaching design strength, then by armored concrete support rail beam bottom plate 2
Bedding filler backfills in thickness range, and backfill face makes outward-dipping weathering and carries out top layer waterproof i.e. by design requirement
Can.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., all should be included
Within protection scope of the present invention.
Claims (8)
1. medium-and low-speed maglev traffic engineering two-wire embankment location pile foundation combined type support rail girder construction, it is characterised in that including first
Pile foundation bearing structure (3), pile foundation joist composite bearing structure (90), armored concrete support rail beam bottom plate (2), two placing of reinforcement coagulations
Roadbed filling (5) and support rail beam both sides backfill filler (4) under native girder structure (1), support rail beam, wherein,
The first pile foundation bearing structure (3) and the pile foundation joist composite bearing structure (90) accept the reinforced concrete jointly
Native support rail beam bottom plate (2);
The first pile foundation bearing structure (3) is provided with more, and the every first pile foundation bearing structure (3) is vertically arranged,
And the armored concrete support rail beam bottom plate (2) is accepted on the top of the every first pile foundation bearing structure (3), described
The embedded armored concrete support rail beam bottom plate (2) of one pile foundation bearing structure (3) and its rigid connection;
Accept reinforced concrete beam type structure (1) described in two rows, and phase in the top of the armored concrete support rail beam bottom plate (2)
Expansion joint is set between the section of the neighbour two armored concrete support rail beam bottom plate (2);
The pile foundation joist composite bearing structure (90) is provided with the two multiple and adjacent section armored concrete support rail beams
A pile foundation joist composite bearing structure (90) is respectively provided with the expansion joint of bottom plate (2), for supporting this adjacent two pieces
The armored concrete support rail beam bottom plate (2), each pile foundation joist composite bearing structure (90) include armored concrete
Joist (901) and the second pile foundation bearing structure (902), and the top of the every second pile foundation bearing structure (902) is held
The reinforced concrete supporting beam (901) is connect, the reinforced concrete supporting beam (901) accepts the armored concrete support rail beam bottom plate
(2);
The top of the second pile foundation bearing structure (902) is embedded in the reinforced concrete supporting beam (901), the armored concrete
Joist (901) and armored concrete support rail beam bottom plate (2) rigid connection or overlap joint;
Reinforced concrete supporting beam (901) both sides are provided with for limiting the armored concrete support rail beam bottom plate (2) laterally
The convex block machine (91) of displacement;
Accept the reinforced concrete beam type structure (1), and the steel in the top of the armored concrete support rail beam bottom plate (2)
Reinforced concrete support rail beam bottom plate (2) is molded with reinforced concrete beam type structure (1) formed by integrally casting, so as to collectively form reinforcing bar
Concrete support rail beam (9);
Wired weathering section be set between reinforced concrete beam type structure (1) described in two rows, 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 bottom plate (2) internode expansion joint
And then current are discharged;
Under the support rail beam roadbed filling (5) be arranged on shallow layer reinforcement area (6) and the armored concrete support rail beam bottom plate (2) it
Between, for being filled out for the armored concrete support rail beam bottom plate (2), reinforced concrete supporting beam (901) and support rail beam both sides
Expect that (4) provide construction platform, and lateral support is provided for the first pile foundation bearing structure (3);Wherein, the shallow layer reinforcement area
(6) be arranged on the superficial layer of soft stratum (7), and under the shallow layer reinforcement area (6), the support rail beam roadbed filling (5) and
The vertical consistency of the reinforced concrete beam type structure (1);
The support rail beam both sides backfill filler (4) is accepted by roadbed filling (5) under the support rail beam, and the support rail beam two
Side backfill filler (4) props up the both sides of the armored concrete support rail beam bottom plate (2), with to the armored concrete support rail beam bottom
Plate (2) shields and constrained the transverse shifting of the armored concrete support rail beam bottom plate (2), and provides maintenance and lead to
Road;
Roadbed filling (5) and support rail beam both sides backfill filler (4) collectively form filler filling body (10) under the support rail beam,
Filler filling body (10) both sides are provided with weathering (11);
The lower end of the every first pile foundation bearing structure (3) sequentially passes through roadbed filling (5), the shallow-layer under the support rail beam
Stretched into behind stabilization zone (6) and the soft stratum (7) in supporting course (8), with when soft stratum (7) produces sedimentation, described the
One pile foundation bearing structure (3) can bear negative friction, so as to armored concrete support rail beam bottom plate (2) and reinforced concrete beam type
Structure (1) provides stable bearing capacity, to reduce because the differential settlement of filler filling body (10) is to armored concrete support rail beam
(9) vertical, the caused adverse effect of vertical and horizontal rigidity.
2. pile foundation combined type support rail girder construction in medium-and low-speed maglev traffic engineering two-wire embankment location according to claim 1,
Characterized in that, the first pile foundation bearing structure (3) is cast-in-situ bored pile, reinforced concrete supporting beam and armored concrete support rail
Beam bottom plate rigid connection or overlap joint, with pile foundation bearing structure rigid connection.
3. pile foundation combined type support rail girder construction in medium-and low-speed maglev traffic engineering two-wire embankment location according to claim 1,
Characterized in that, the position reinforced concrete supporting beam in support rail beam internode seam is taken with armored concrete support rail beam bottom plate using pin
Connect, remaining position uses rigid connection.
4. pile foundation combined type support rail girder construction in medium-and low-speed maglev traffic engineering two-wire embankment location according to claim 1,
Characterized in that, the height and the height of the armored concrete support rail beam bottom plate (2) of the support rail beam both sides backfill filler (4)
It is equal.
5. pile foundation combined type support rail girder construction in medium-and low-speed maglev traffic engineering two-wire embankment location according to claim 1,
Characterized in that, all these described first pile foundation bearing structures (3) are arranged in ranks.
6. pile foundation combined type support rail girder construction in medium-and low-speed maglev traffic engineering two-wire embankment location according to claim 1,
Characterized in that, the lower end of the every second pile foundation bearing structure (902) sequentially passes through roadbed filling under the support rail beam
(5), stretched into after the shallow layer reinforcement area (6) and the soft stratum (7) in supporting course (8).
7. pile foundation combined type support rail girder construction in medium-and low-speed maglev traffic engineering two-wire embankment location according to claim 1,
Characterized in that, the cross fall of weathering section is 3%~5% between the line, head fall is not less than 2 ‰.
8. pile foundation combined type support rail girder construction in medium-and low-speed maglev traffic engineering two-wire embankment location according to claim 3,
Characterized in that, the pin includes pre-buried connection reinforcing bar, pitch hemp cut and stainless steel sleeve pipe, the pre-buried connection reinforcing bar is located at
The pitch hemp cut is set in the stainless steel sleeve pipe and between the two.
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CN104452483B (en) * | 2014-12-09 | 2016-08-17 | 中铁第四勘察设计院集团有限公司 | Middle low speed magnetic suspension traffic engineering is low puts route curve support rail girder construction |
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CN105714626B (en) * | 2016-01-21 | 2017-05-10 | 中铁第四勘察设计院集团有限公司 | Joggle joint type bearing rail beam structure for middle and low-speed magnetic suspension traffic engineering low line |
CN105672067B (en) * | 2016-01-21 | 2017-04-26 | 中铁第四勘察设计院集团有限公司 | Bearing-rail beam low track and viaduct transition section structure of medium-low-speed magnetic suspension traffic engineering |
CN105887586A (en) * | 2016-04-29 | 2016-08-24 | 中铁第四勘察设计院集团有限公司 | Low implantation line double-wire section terminal spine type bearing rail beam limiting structure in medium and low speed magnetic levitation transportation engineering |
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