CN106283972B - Medium-and low-speed maglev traffic engineering single line embankment location pile foundation combined type support rail girder construction - Google Patents
Medium-and low-speed maglev traffic engineering single line embankment location pile foundation combined type support rail girder construction Download PDFInfo
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- CN106283972B CN106283972B CN201610826228.5A CN201610826228A CN106283972B CN 106283972 B CN106283972 B CN 106283972B CN 201610826228 A CN201610826228 A CN 201610826228A CN 106283972 B CN106283972 B CN 106283972B
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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 single line 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, reinforced concrete beam type structure, support rail beam and support rail beam both sides backfill filler, the first pile foundation bearing structure is provided with many；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 the low defect for putting circuit support rail girder construction of tradition, 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 and settlement after construction high request, the requirement of the controllability of bedding long-time stability, durability and construction quality is met 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 single line 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 a small number of.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 does 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
Roadbed is constituted under the section of track, support rail beam and support rail beam, and 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 is easily deformed, and settlement after construction is difficult to control to.
(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 conventional reinforced soft soil ground
Apply and reinforced, construction quality is difficult to control.
(3) because the low circuit earth structure of putting that filler fills compacting has vulnerability, and construction quality is difficult
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, taking traditional support rail girder construction pattern to exist, the construction period is long, and construction quality is not easily-controllable
System, the defect such as whole structural stability is poor and less economical.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, filled out the invention provides medium-and low-speed maglev traffic engineering single line
Square location pile foundation combined type support rail girder construction, can avoid the low defect for putting circuit support rail girder construction of tradition, and construction quality is easier
Control, long-time stability more preferably, 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, the requirement of the controllability of bedding long-time stability, durability and construction quality is met again, and it is economical
Property is more preferably.
To achieve the above object, it is proposed, according to the invention, multiple there is provided medium-and low-speed maglev traffic engineering single line embankment location pile foundation
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, reinforced concrete beam type structure, support rail beam, wherein,
The first pile foundation bearing structure and the pile foundation joist composite bearing structure accept the armored concrete jointly
Support rail beam bottom plate；
The first pile foundation bearing structure is provided with many, and the every first pile foundation bearing structure is vertically arranged, and
And the armored concrete support rail beam bottom plate is accepted at the top of the every first pile foundation bearing structure, first pile foundation is held
The top for carrying structure is embedded in the armored concrete support rail beam bottom plate and its rigid connection；
Accept the reinforced concrete beam type structure, and two adjacent sections in the top of the armored concrete support rail beam bottom plate
Expansion joint is set between the armored concrete support rail beam bottom plate；
The pile foundation joist composite bearing structure setting has multiple, and the two adjacent section armored concrete support rail beams
Pile foundation joist composite bearing structure described in one is respectively provided with the expansion joint of bottom plate, for supporting two blocks of reinforcing bars that this is adjacent
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 is mixed
Solidifying soil 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 and its rigid connection, the reinforced concrete
Native joist and 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 gear platform；
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 pours shaping with the reinforced concrete beam type structural integrity, is held so as to collectively form armored concrete
Beam-and-rail；
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
The longitudinal direction one of roadbed filling and the reinforced concrete beam type structure under top layer, and 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, it is unfavorable with reduce that the sedimentation because of filler filling body produces to the vertical of armored concrete support rail beam, vertical and horizontal rigidity
Influence.
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, the position reinforced concrete supporting beam and armored concrete support rail beam bottom plate stitched in support rail beam internode uses pin
Nail overlap joint, remaining position uses rigid connection.
Preferably, the support rail beam both sides backfill the height and the height phase of the armored concrete support rail beam bottom plate of filler
Deng.
Preferably, all these described first pile foundation bearing structures are arranged in ranks.
Preferably, the lower end of the every first 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 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, magnetic-levitation train of the two composition integral reinforced concrete structure to directly take on 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, it is to avoid because filling compaction and foundation stabilization quality are difficult
The differential settlement that control is caused is vertical to support rail beam, vertical and horizontal rigidity influence, and structure vertical cross stiffness and structure can
It is more excellent by property.
(3) circuit soft soil zone is put low, it is necessary according to being carried out to the superficial layer of soft stratum the need for embankment stability
Reinforcing, its reinforcement depth by embankment stability control, compared to by settle and tradition during stable Two indices control 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 more avoid the foundation stabilization work of the wide area produced after embankment slope
Journey, and the first pile foundation bearing structure construction quality is more easy to control, can effectively control construction quality, investment reduction shortens the duration, tool
There are obvious technology and economic advantages.
(4) reinforced concrete supporting beam that pile foundation bearing structure and armored concrete support rail beam bottom plate are set, can subtract significantly
The stress concentration phenomenon of armored concrete support rail beam bottom plate at small pile foundation bearing structure；Further, since reinforced concrete supporting beam
Lateral connection is acted on, and is also increased the lateral stiffness of structure and the ability of resistance differential settlement deformation, can be reduced transverse pile foundation
Quantity, reduce investment.
(5) 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 the profile along I-I line in Fig. 1；
Fig. 3 is the profile along II-II line in Fig. 1；
Fig. 4 is the plane 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 reinforced concrete supporting beam and pile foundation bearing structure rigid connection connection diagram in the present invention.
Fig. 7 is reinforced concrete supporting beam and pile foundation bearing structure overlap joint connection diagram in the present invention.
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
Not constituting conflict each other can just be mutually combined.
1~Fig. 8 of reference picture, medium-and low-speed maglev traffic engineering single line embankment location pile foundation combined type support rail girder construction, including
Roadbed filling 5 under first pile foundation bearing structure 3, armored concrete support rail beam bottom plate 2, reinforced concrete beam type structure 1, support rail beam
Filler 4 is backfilled with support rail beam both sides, 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 many, and the every first pile foundation bearing structure 3 is vertically arranged,
And the armored concrete support rail beam bottom plate 2, described first are accepted in the top of the every first pile foundation bearing structure 3
The top of base bearing structure 3 is embedded in the armored concrete support rail beam bottom plate 2 and its rigid connection；
Accept the reinforced concrete beam type structure 1, and adjacent two in the top of the armored concrete support rail beam bottom plate 2
Save and expansion joint is set between the 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
Pile foundation joist composite bearing structure 90 described in one is respectively provided with, for supporting two pieces of institutes that this is adjacent at the expansion joint of beam bottom plate 2
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 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 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 gear platform 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；
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 carried for the armored concrete support rail beam bottom plate 2, reinforced concrete supporting beam 901 and support rail beam both sides backfill filler 4
Lateral support is provided for operation 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 vertical, vertical and horizontal rigidity of the sedimentation because of filler filling body 10 to armored concrete support rail beam 9
The adverse effect of generation.
Further, the first pile foundation bearing structure 3 is cast-in-situ bored pile, and reinforced concrete supporting beam is held with armored concrete
The rigid connection of beam-and-rail bottom plate 2 or overlap joint, with pile foundation bearing structure rigid connection.The position stitched in support rail beam internode is overlapped using pin, remaining
Position uses 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 caused by traditional foundation stabilization measure that engineering is huge, invest 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, reduces 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 track transmission magnetic-levitation train load, then will deadweight and upper load is passed to and its rigidly connected first pile foundation is carried
Structure 3, structural reliability is high, can save the large area stiffening basic ground produced after traditional embankment slope.
First pile foundation bearing structure 3 uses cast-in-situ bored pile, and transverse direction and longitudinal direction, which has, is arranged with many reinforced concrete drills
Hole pouring pile, vertical and horizontal rigidity is big；And first pile foundation bearing structure 3 go deep into supporting course 8, when soft stratum 7 produces sedimentation,
First pile foundation bearing structure 3 can still bear negative friction and provide stronger bearing capacity to armored concrete support rail beam bottom plate 2.
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, also increases the lateral stiffness of structure and the ability of resistance differential settlement deformation, can reduce horizontal stroke
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 2, impact failure of the section by train load of encorbelmenting can be avoided, and reduce temperature
Spend the influence of stress and shrinkage and creep.
It is low when putting circuit by soft soil zone, should according to ground superficial layer is carried out the need for embankment stability it is necessary plus
Gu, form shallow layer reinforcement area 6.The reinforcement depth in shallow layer reinforcement area 6 is by embankment stability control, and its reinforcement depth should be according to embankment
Raising, foundation condition are determined by stability calculation.Traditional single ground during compared to by settling and stable Two indices are controlled
For reinforcing mode, the reinforcement depth of shallow layer reinforcement area 6 is small, with reference to the first pile foundation bearing structure 3 can effectively control roadbed reclamation and
Post-construction settlement of subgrade.By contrast, the new structure foundation stabilization quantity is small, invests small, and more conducively after construction quality and work
The control of sedimentation, and save cost and shorten the duration.
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 the bottom surface absolute altitude of armored concrete support rail beam bottom plate 2 is densified to；
(2) embankment subgrade cross section, the construction of vertical section direction is in the bottom surface absolute altitude of armored concrete support rail beam bottom plate 2 to bore
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 2 and the connection reinforcing bar with stake；
(3) formwork erection of platform 91, one-time-concreting shaping, before pouring are kept off to reinforced concrete supporting beam 901, convex according to design attitude
All kinds of built-in fittings such as pin 12 and positioning and installation with the connection reinforcing bar of pile foundation are carried out, concrete reaches to be removed after design strength
Template；
It is (4) long to armored concrete support rail beam bottom 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；
(5) each part concrete, which reaches, distinguishes form removal after design strength, then by armored concrete support rail beam bottom plate 2
Bedding filler is backfilled 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, it is not used to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the invention etc., it all should include
Within protection scope of the present invention.
Claims (7)
1. medium-and low-speed maglev traffic engineering single line 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), reinforced beam
Roadbed filling (5) and support rail beam both sides backfill filler (4) under formula 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 many, and the every first pile foundation bearing structure (3) is vertically arranged,
And the armored concrete support rail beam bottom plate (2), described are accepted in the top of the every first pile foundation bearing structure (3)
The top of one pile foundation bearing structure (3) is embedded in the armored concrete support rail beam bottom plate (2) and its rigid connection；
Accept the reinforced concrete beam type structure (1), and adjacent two in the top of the armored concrete support rail beam bottom plate (2)
Save and expansion joint is set between the 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
Pile foundation joist composite bearing structure (90) described in one is respectively provided with the expansion joint of bottom plate (2), for support that this is adjacent two pieces
The armored concrete support rail beam bottom plate (2), each pile foundation joist composite bearing structure (90) includes armored concrete
Joist (901) and the second pile foundation bearing structure (902), and the top of the every second pile foundation bearing structure (902) holds
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) and its rigid connection, the steel
Reinforced 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 gear platform (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)；
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 operation platform, and lateral support is provided for the first pile foundation bearing structure (3)；Wherein, the shallow layer reinforcement area
(6) be arranged on soft stratum (7) superficial layer, 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 it is logical to provide maintenance
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, and armored concrete support rail beam (9) is erected with the sedimentation reduced because of filler filling body (10)
The adverse effect produced to, vertical and horizontal rigidity.
2. pile foundation combined type support rail girder construction in medium-and low-speed maglev traffic engineering single line 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 (2) rigid connection or overlap joint, with the second pile foundation bearing structure rigid connection.
3. pile foundation combined type support rail girder construction in medium-and low-speed maglev traffic engineering single line embankment location according to claim 1,
Characterized in that, the position reinforced concrete supporting beam and armored concrete support rail beam bottom plate (2) that are stitched in support rail beam internode use pin
Nail overlap joint, remaining position uses rigid connection.
4. pile foundation combined type support rail girder construction in medium-and low-speed maglev traffic engineering single line 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 single line 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 single line embankment location according to claim 1,
Characterized in that, the lower end of the every first pile foundation bearing structure (3) sequentially pass through roadbed filling (5) under the support rail beam,
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 single line 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610826228.5A CN106283972B (en) | 2016-09-15 | 2016-09-15 | Medium-and low-speed maglev traffic engineering single line embankment location pile foundation combined type support rail girder construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610826228.5A CN106283972B (en) | 2016-09-15 | 2016-09-15 | Medium-and low-speed maglev traffic engineering single line embankment location pile foundation combined type support rail girder construction |
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| Publication Number | Publication Date |
|---|---|
| CN106283972A CN106283972A (en) | 2017-01-04 |
| CN106283972B true CN106283972B (en) | 2017-10-31 |
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