CN106283955A - Medium-and low-speed maglev traffic engineering single line embankment location pile foundation joist type support rail girder construction - Google Patents
Medium-and low-speed maglev traffic engineering single line embankment location pile foundation joist type support rail girder construction Download PDFInfo
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- CN106283955A CN106283955A CN201610826229.XA CN201610826229A CN106283955A CN 106283955 A CN106283955 A CN 106283955A CN 201610826229 A CN201610826229 A CN 201610826229A CN 106283955 A CN106283955 A CN 106283955A
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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
- E01B2/00—General structure of permanent way
- E01B2/006—Deep foundation of tracks
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/08—Deep or vertical foundation
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Abstract
The invention belongs to that middle low speed magnetic suspension traffic engineering is low puts Line technology field, and disclose medium-and low-speed maglev traffic engineering single line embankment location pile foundation joist type support rail girder construction, including roadbed filling under pile foundation carrying structure, reinforced concrete supporting beam, armored concrete support rail beam base plate, reinforced concrete beam type structure, support rail beam and support rail beam both sides backfill filler, pile foundation carrying structure is provided with many；Described reinforced concrete beam type structure is accepted at the top of armored concrete support rail beam base plate；Support rail beam both sides backfill filler is accepted by roadbed filling under described support rail beam.The present invention can avoid the low defect putting circuit support rail girder construction of tradition, long-time stability are more preferable, and support rail girder construction is deformed and the high request of settlement after construction by low speed magnetic suspension traffic engineering track structure during it both meets, meet again the requirement of the controllability of bedding long-time stability, durability and construction quality, and economy is more preferably.
Description
Technical field
The invention belongs to that middle low speed magnetic suspension traffic engineering is low puts Line technology field, 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
Open the circuit minority especially of operation.The middle low speed magnetic suspension railway business fortune that the most only in March, 2005, Japan's construction was opened
The middle low speed magnetic suspension railway business operating line that line-the East Hillside Line and in June, 2014, Korea S opened.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 all based on elevated structure, rarely seen about the low research put in terms of circuit support rail girder construction and application.
Middle low speed magnetic suspension hangs traffic civil engineering part and mainly comprises bridge, low circuit, station and the rolling stock section of putting, and low puts circuit
Being made up of with roadbed under support rail beam the section of track, 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, guide, drive and brake and is required for completing on support rail beam.Magnetic
Aerotrain is the highest to line construction deformation requirements, because the least the deforming it is possible to affect comfortableness even prestige by bus of structure
Side of body traffic safety, so the design of support rail beam is particularly significant.
Existing support rail girder construction is applied and be there is problems in that on circuit middle low speed magnetic suspension traffic low putting
(1) existing low circuit support rail girder construction of putting is arranged on embankment earth structure, embankment earth structure by
Filler fills compacting and forms, and compaction quality is wayward, and the later stage is susceptible to deformation, and settlement after construction is difficult to control to.
(2) low circuit support rail girder construction of putting requires height to the settlement after construction of roadbed and ground, and is routed through the ground in region
Matter condition is typically all complicated and changeable, therefore also needs to ground be carried out consolidation process simultaneously, and roadbed filling puts slope groundwork
Reinforcing area increases, and cost is high, long in time limit；And basement process belongs to disguised engineering, conventional reinforced soft soil ground is used to arrange
Executing and reinforce, construction quality is wayward.
(3) owing to filler fills the low circuit earth structure of putting being compacted, there is vulnerability, and construction quality is difficult to
Control, relatively easily produce differential settlement, cause bedding vertical and horizontal bad stability under support rail beam, so that support rail beam
The stability in the large of structure is impaired.
Magnetic suspension is low, and to put circuit support rail beam higher to post-construction settlement of subgrade, bedding long-time stability and life requirement, when
When circuit is positioned at foundation stabilization location, taking traditional support rail girder construction pattern to there is the construction period long, construction quality is the most easily-controllable
The defects such as system, whole structural stability are poor and less economical.
Summary of the invention
For disadvantages described above or the Improvement requirement of prior art, the invention provides medium-and low-speed maglev traffic engineering single line and fill out
Side's location pile foundation joist type support rail girder construction, can avoid the low defect putting circuit support rail girder construction of tradition, and construction quality is easier to
During controlling, long-time stability are more preferable, and it both meets, support rail girder construction is deformed by low speed magnetic suspension traffic engineering track structure
With the high request of settlement after construction, meet again the requirement of the controllability of bedding long-time stability, durability and construction quality, and economical
Property is more preferably.
For achieving the above object, the invention provides medium-and low-speed maglev traffic engineering single line embankment location pile foundation joist type to hold
Beam-and-rail structure, it is characterised in that include that pile foundation carries structure, reinforced concrete supporting beam, armored concrete support rail beam base plate, reinforcing bar
Roadbed filling and support rail beam both sides backfill filler under concrete beam-type structure, support rail beam, wherein,
Described pile foundation carrying structure is provided with many, and every described pile foundation carrying structure is all vertically arranged, and every institute
Described reinforced concrete supporting beam is all accepted on the top stating pile foundation carrying structure；
Described reinforced concrete supporting beam accepts described armored concrete support rail beam base plate；
Described reinforced concrete beam type structure is accepted at the top of described armored concrete support rail beam base plate；
The top of described pile foundation carrying structure embeds described reinforced concrete supporting beam and just connects with it, described armored concrete torr
Beam has just connect with described armored concrete support rail beam base plate or has overlapped, described armored concrete support rail beam base plate and described reinforced concrete
Soil girder structure formed by integrally casting molding thus collectively form armored concrete support rail beam；
Described reinforced concrete supporting beam both sides are provided with for limiting described armored concrete support rail beam base plate lateral displacement
Convex gear platform；
Under described support rail beam, roadbed filling is arranged between shallow layer reinforcement district and described armored concrete support rail beam base plate, with
For providing construction flat for described armored concrete support rail beam base plate, reinforced concrete supporting beam and support rail beam both sides backfill filler
Platform, and provide lateral support for described pile foundation carrying structure；Wherein, described shallow layer reinforcement district is arranged on the shallow table of soft stratum
Layer, and roadbed filling and the vertical consistency of described reinforced concrete beam type structure under described shallow layer reinforcement district, described support rail beam；
Described support rail beam both sides backfill filler is accepted by roadbed filling under described support rail beam, and described support rail beam both sides
Backfill filler props up the both sides of described armored concrete support rail beam base plate, so that described armored concrete support rail beam base plate is risen protection
Act on and retrain the transverse shifting of described armored concrete support rail beam base plate, and maintenance passage is provided；
Under described support rail beam roadbed filling and described support rail beam both sides backfill filler collectively form filler filling body, described in fill out
Material filling body both sides are provided with weathering；
The lower end of every described pile foundation carrying structure sequentially passes through roadbed filling under described support rail beam, described shallow layer reinforcement district
Stretching in supporting course with after described soft stratum, with when soft stratum produces sedimentation, described pile foundation carrying structure can be born negative
Frictional resistance, thus provide stable bearing capacity to armored concrete support rail beam base plate and reinforced concrete beam type structure, to reduce
The adverse effect vertical, the vertical and horizontal rigidity of armored concrete support rail beam produced because of the sedimentation of filler filling body.
Preferably, described pile foundation carrying structure is cast-in-situ bored pile, reinforced concrete supporting beam and support rail beam base plate just connect or
Overlap joint, just connects with pile foundation carrying structure.Using pin overlap joint in the position of support rail beam internode seam, remaining position uses and just connects.
Preferably, described support rail beam both sides backfill the height of filler and the height phase of described armored concrete support rail beam base plate
Deng.
Preferably, pile foundation carrying structure described in all these is ranks arrangements.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it is possible to show under acquirement
Benefit effect:
(1) the armored concrete support rail beam base plate of the present invention, reinforced concrete beam type structure all use armored concrete existing
Field one-piece casting, the two composition integral reinforced concrete structure is in order to directly take on track load and the magnetic-levitation train of track transmission
Load, then deadweight and upper load are passed to pile foundation rigidly connected with it carrying structure, structural reliability is high.
(2) the pile foundation carrying structure of the present invention is goed deep in supporting course, and embankment produces when necessarily settling, and pile foundation carrying structure depends on
So can bear negative friction and stronger bearing capacity is provided, it is to avoid because of filling compaction with foundation stabilization quality is wayward causes
Differential settlement is vertical on support rail beam, the impact of vertical and horizontal rigidity, structure vertical cross stiffness and structural reliability are more excellent.
(3) put circuit soft soil zone low, according to embankment stability need the shallow top layer of soft stratum is carried out necessity
Reinforcing, its reinforcement depth is by embankment stability control, compared to by settling and stablizing tradition when Two indices controls solely
For base reinforcing mode, shallow layer reinforcement district reinforcement depth is little, can effectively control roadbed reclamation and roadbed in conjunction with pile foundation carrying structure
Settlement after construction.Non-soft soil zone more can avoid embankment to put the stiffening basic ground of the wide area produced behind slope, and
Pile foundation carrying structure construction quality is more easy to control, can effectively control construction quality, investment reduction, reduction of erection time, has significantly
Technology and economic advantages.
(4) reinforced concrete supporting beam that pile foundation carrying structure and reinforced concrete floor are arranged, can be greatly reduced pile foundation
The stress concentration phenomenon of armored concrete support rail beam base plate at carrying structure；Further, since laterally the connecting of reinforced concrete supporting beam
Connect effect, too increase lateral stiffness and the ability of opposing differential settlement deformation of structure, the quantity of transverse pile foundation can be reduced,
Reduce investment.
Accompanying drawing explanation
Fig. 1 is the schematic cross-sectional view of the present invention；
Fig. 2 is the schematic longitudinal section of the present invention；
Fig. 3 is the distribution schematic diagram of pile foundation of the present invention carrying structure；
Fig. 4 is that pile foundation reinforced concrete supporting beam of the present invention has just connect connection diagram with armored concrete support rail beam base plate.
Fig. 5 is that pile foundation reinforced concrete supporting beam of the present invention overlaps connection diagram with armored concrete support rail beam base plate.
Fig. 6 is the cross sectional representation of pin in the present invention.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.If additionally, technical characteristic involved in each embodiment of invention described below
The conflict of not constituting each other just can be mutually combined.
Reference Fig. 1～Fig. 6, medium-and low-speed maglev traffic engineering single line embankment location pile foundation joist type support rail girder construction, including
Pile foundation carrying structure 3, reinforced concrete supporting beam 90, armored concrete support rail beam base plate 2, reinforced concrete beam type structure 1, support rail
Roadbed filling 5 and support rail beam both sides backfill filler 4 under beam, wherein,
Described pile foundation carrying structure 3 is provided with many, and every described pile foundation carrying structure 3 is all vertically arranged, and every
Described reinforced concrete supporting beam 90 is all accepted on the top of described pile foundation carrying structure 3；
Described reinforced concrete supporting beam 90 accepts described armored concrete support rail beam base plate 2；
Described reinforced concrete beam type structure 1 is accepted on the top of described armored concrete support rail beam base plate 2；
The top of described pile foundation carrying structure 3 embeds described reinforced concrete supporting beam 90 and just connects with it, described reinforced concrete
Soil joist 90 has just connect with described armored concrete support rail beam base plate 2 or has overlapped, and described armored concrete support rail beam base plate 2 is with described
Reinforced concrete beam type structure 1 is one-body molded thus collectively forms armored concrete support rail beam 9；
It is provided with on described reinforced concrete supporting beam 90 for limiting described armored concrete support rail beam base plate 2 lateral displacement
Convex gear platform 91；
Under described support rail beam roadbed filling 5 be arranged on shallow layer reinforcement district 6 and described armored concrete support rail beam base plate 2 it
Between, carry for for described armored concrete support rail beam base plate 2, reinforced concrete supporting beam 90 and support rail beam both sides backfill filler 4
For operation platform, and provide lateral support for described pile foundation carrying structure 3；Wherein, described shallow layer reinforcement district 6 is arranged on flabbily
The shallow top layer of layer 7, and roadbed filling 5 and described reinforced concrete beam type structure under described shallow layer reinforcement district 6, described support rail beam
The vertical consistency of 1；
Described support rail beam both sides backfill filler 4 is accepted by roadbed filling 5 under described support rail beam, and described support rail beam two
Side backfill filler 4 props up the both sides of described armored concrete support rail beam base plate 2, with to described armored concrete support rail beam base plate 2
Shield and retrain the transverse shifting of described armored concrete support rail beam base plate 2, and maintenance passage is provided；
Under described support rail beam, roadbed filling 5 and described support rail beam side backfill filler 4 collectively form filler filling body 10, described
Filler filling body 10 both sides are provided with weathering 11；
The lower end of every described pile foundation carrying structure 3 sequentially passes through roadbed filling 5, described shallow layer reinforcement under described support rail beam
Stretching into behind district 6 and described soft stratum 7 in supporting course 8, with when soft stratum 7 produces sedimentation, described pile foundation carrying structure 3 can
Bear negative friction, thus provide stable carrying to armored concrete support rail beam base plate 2 and reinforced concrete beam type structure 1
Power, to reduce because vertical, the vertical and horizontal rigidity of armored concrete support rail beam 9 are produced not by the sedimentation of backfill packing section 10
Profit impact.
Further, described pile foundation carrying structure 3 be cast-in-situ bored pile, reinforced concrete supporting beam and support rail beam base plate just connect or
Overlap joint, just connects with pile foundation carrying structure.Position reinforced concrete supporting beam at support rail beam internode seam uses pin with support rail beam base plate
Nail overlap joint, remaining position uses and just connects.
Described pin 10 includes pre-buried connection reinforcing bar 10.1, Colophonium hemp cut 10.2 and rustless steel sleeve pipe 10.3, described pre-buried
Connect reinforcing bar 10.1 be positioned at described rustless steel sleeve pipe 10.3 and arrange described Colophonium hemp cut 10.2 between the two.
The height of described support rail beam both sides backfill filler 4 is equal with the height of described armored concrete support rail beam base plate 2, institute
These the described pile foundations carrying structure 3 having is arranged in ranks.
This structural shape can effectively solve in low speed magnetic suspension traffic engineering low to put circuit tight to post-construction settlement of subgrade requirement
Lattice, the engineering taking traditional foundation stabilization measure to cause is huge, it is big, long in time limit to invest, and basement process and embankment
Construction quality is wayward, bedding long-time stability and the problem of poor durability, thus improves 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 the magnetic-levitation train load of track transmission, then deadweight and upper load are passed to pile foundation rigidly connected with it carrying structure
3, structural reliability is high, can save the large area stiffening basic ground produced after traditional embankment puts slope.
Pile foundation carrying structure 3 uses cast-in-situ bored pile, transverse direction and longitudinal direction to have and is arranged with many reinforced concrete drillings fillings
Note stake, vertical and horizontal rigidity is big；And pile foundation carries structure 3 and gos deep into supporting course 8, when soft stratum 7 produces sedimentation, pile foundation carries
Structure 3 still can be born negative friction and be provided stronger bearing capacity to armored concrete support rail beam base plate 2.
The reinforced concrete supporting beam 90 that pile foundation carrying structure 3 and reinforced concrete floor 2 are arranged, can be greatly reduced pile foundation
The stress concentration phenomenon of armored concrete support rail beam base plate 2 at carrying structure 3；Further, since the horizontal stroke of reinforced concrete supporting beam 90
To interconnection function, too increase lateral stiffness and the ability of opposing differential settlement deformation of structure, transverse pile foundation can be reduced
Quantity, reduces investment.
Low when putting circuit by soft soil zone, top layer shallow to ground should be needed to carry out necessity add according to embankment stability
Gu, form shallow layer reinforcement district 6.The reinforcement depth in shallow layer reinforcement district 6 is by embankment stability control, and its reinforcement depth should be according to embankment
Raising, foundation condition are determined by stability calculation.Compared to by settling and stablizing the single ground of tradition when Two indices controls
For reinforcing mode, shallow layer reinforcement district 6 reinforcement depth is little, can effectively control roadbed reclamation and roadbed in conjunction with pile foundation carrying structure 3
Settlement after construction.By contrast, this new structure foundation stabilization quantity is little, invests little, and more conducively construction quality and settlement after construction
Control, and save cost and reduction of erection time.
The making step that the present invention is concrete is as follows:
(1) smooth construction site, requires to carry out the shallow layer foundation consolidation process of necessity, forms shallow layer reinforcement district according to design
6, then require placement in layers according to embankment and be densified to reinforced concrete floor bottom surface absolute altitude；
(2) it is in embankment subgrade cross section, the perfusion of vertical section direction construction drill at reinforced concrete floor bottom surface absolute altitude
Stake, i.e. pile foundation carrying structure 3, drilled pile construction should use the construction technology little to railway embankment disturbance, if desired at embankment
Steel pile casting is set in the range of filled height or draws hole；After cast-in-situ bored pile reaches desired strength, amputate pile crown by code requirement,
Assembling reinforcement concrete joist and the connection reinforcing bar with stake；
(3) according to design attitude to reinforced concrete supporting beam 90, convex gear platform 91 formwork erection, one-time-concreting molding, before pouring
Carry out all kinds of built-in fitting such as pin 10 and with pile foundation connect the location of reinforcing bar and installation, concrete is removed after reaching design strength
Template；
It is (4) long to armored concrete support rail beam base plate 2 and reinforced concrete beam type structure 1 merogenesis formwork erection according to design joint,
One-time-concreting molding, carries out all kinds of built-in fitting such as sleeper pedestal and connects reinforcing bar, water conservancy diversion rail bearing built-in fitting, pile foundation connection before pouring
The location of reinforcing bar etc. and installation；
(5) difference form removal after each parts concrete reaches design strength, then by armored concrete support rail beam base plate 2
Bedding filler backfill in thickness range, outward-dipping weathering is made in backfill face and to carry out top layer by design requirement waterproof i.e.
Can.
As it will be easily appreciated by one skilled in the art that and the foregoing is only presently preferred embodiments of the present invention, not in order to
Limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, all should comprise
Within protection scope of the present invention.
Claims (6)
1. medium-and low-speed maglev traffic engineering single line embankment location pile foundation joist type support rail girder construction, it is characterised in that include pile foundation
Carrying structure (3), reinforced concrete supporting beam (90), armored concrete support rail beam base plate (2), reinforced concrete beam type structure (1),
Roadbed filling (5) and support rail beam both sides backfill filler (4) under support rail beam, wherein,
Described pile foundation carrying structure (3) is provided with many, and every described pile foundation carrying structure (3) is all vertically arranged, and every
Described reinforced concrete supporting beam (90) is all accepted on the top of described pile foundation carrying structure (3)；
Described reinforced concrete supporting beam (90) accepts described armored concrete support rail beam base plate (2)；
Described reinforced concrete beam type structure (1) is accepted on the top of described armored concrete support rail beam base plate (2)；
The top of described pile foundation carrying structure (3) embeds described reinforced concrete supporting beam (90) and just connects with it, described reinforced concrete
Soil joist (90) has just connect with described armored concrete support rail beam base plate (2) or has overlapped, described armored concrete support rail beam base plate (2)
With the formed by integrally casting molding of described reinforced concrete beam type structure (1) thus collectively form armored concrete support rail beam (9)；
Described reinforced concrete supporting beam (90) both sides are provided with for limiting described armored concrete support rail beam base plate (2) laterally position
Convex gear platform (91) moved；
Under described support rail beam roadbed filling (5) be arranged on shallow layer reinforcement district (6) and described armored concrete support rail beam base plate (2) it
Between, backfill filler for for described armored concrete support rail beam base plate (2), reinforced concrete supporting beam (90) and support rail beam both sides
(4) provide operation platform, and be that described pile foundation carrying structure (3) provides lateral support；Wherein, described shallow layer reinforcement district (6) sets
Put roadbed filling (5) and described steel under the shallow top layer at soft stratum (7), and described shallow layer reinforcement district (6), described support rail beam
Reinforced concrete beam type structure (1) vertical consistency；
Described support rail beam both sides backfill filler (4) are accepted by roadbed filling (5) under described support rail beam, and described support rail beam two
Side backfill filler (4) props up the both sides of described armored concrete support rail beam base plate (2), with at the bottom of described armored concrete support rail beam
Plate (2) shields and retrains the transverse shifting of described armored concrete support rail beam base plate (2), and provides maintenance to lead to
Road；
Under described support rail beam, roadbed filling (5) and described support rail beam both sides backfill filler (4) collectively form filler filling body (10),
Described filler filling body (10) both sides are provided with weathering (11)；
The lower end of every described pile foundation carrying structure (3) sequentially passes through roadbed filling (5), described shallow layer reinforcement under described support rail beam
Stretching in supporting course (8) behind district (6) and described soft stratum (7), with when soft stratum (7) produces sedimentation, described pile foundation is held
Carry structure (3) and negative friction can be born, thus be armored concrete support rail beam base plate (2) and reinforced concrete beam type structure (1)
There is provided stable bearing capacity, to reduce vertical, longitudinally to armored concrete support rail beam (9) of the sedimentation because of filler filling body (10)
The adverse effect produced with lateral stiffness.
Medium-and low-speed maglev traffic engineering single line embankment location the most according to claim 1 pile foundation joist type support rail girder construction,
It is characterized in that, described pile foundation carrying structure (3) is cast-in-situ bored pile, and reinforced concrete supporting beam has just connect with support rail beam base plate or taken
Connect, just connect with pile foundation carrying structure.
Medium-and low-speed maglev traffic engineering single line embankment location the most according to claim 1 pile foundation joist type support rail girder construction,
It is characterized in that, position reinforced concrete supporting beam and support rail beam base plate at support rail beam internode seam use pin overlap joint, remaining position
Put employing just to connect.
Medium-and low-speed maglev traffic engineering single line embankment location the most according to claim 1 pile foundation joist type support rail girder construction,
It is characterized in that, the height of described support rail beam both sides backfill filler (4) and the height of described armored concrete support rail beam base plate (2)
Equal.
Medium-and low-speed maglev traffic engineering single line embankment location the most according to claim 1 pile foundation joist type support rail girder construction,
It is characterized in that, described in all these, pile foundation carrying structure (3) is arranged in ranks.
Medium-and low-speed maglev traffic engineering single line embankment location the most according to claim 1 pile foundation joist type support rail girder construction,
It is characterized in that, described pin includes that pre-buried connection reinforcing bar, Colophonium hemp cut and rustless steel sleeve pipe, described pre-buried connection reinforcing bar are positioned at
Described rustless steel sleeve pipe is interior and arranges described Colophonium hemp cut between the two.
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| CN111235969A (en) * | 2020-03-16 | 2020-06-05 | 中铁二院工程集团有限责任公司 | Overhead roadbed structure, roadbed assembly, roadbed system and construction method |
| CN113502847A (en) * | 2021-07-15 | 2021-10-15 | 天津城建大学 | Assembly type rigid support protection foundation structure for buried pipeline |
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| CN105887587A (en) * | 2016-04-29 | 2016-08-24 | 中铁第四勘察设计院集团有限公司 | Turnout zone and non-turnout zone transition section structure for medium and low-speed magnetic levitation low implantation line |
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| CN111235969A (en) * | 2020-03-16 | 2020-06-05 | 中铁二院工程集团有限责任公司 | Overhead roadbed structure, roadbed assembly, roadbed system and construction method |
| CN113502847A (en) * | 2021-07-15 | 2021-10-15 | 天津城建大学 | Assembly type rigid support protection foundation structure for buried pipeline |
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