CN106283947B - Medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail girder construction - Google Patents

Medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail girder construction Download PDF

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Publication number
CN106283947B
CN106283947B CN201610825009.5A CN201610825009A CN106283947B CN 106283947 B CN106283947 B CN 106283947B CN 201610825009 A CN201610825009 A CN 201610825009A CN 106283947 B CN106283947 B CN 106283947B
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support rail
rail beam
pile foundation
bottom plate
armored concrete
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CN106283947A (en
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郭建湖
李小和
赵新益
姜鹰
姚洪锡
李巍
王勇刚
杨辉建
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China Railway Siyuan Survey and Design Group Co Ltd
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China Railway Siyuan Survey and Design Group Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2/00General structure of permanent way
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2/00General structure of permanent way
    • E01B2/006Deep foundation of tracks

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 two-wire embankment location pile foundation joist framing type support rail girder construction, including roadbed filling under pile foundation bearing structure, reinforced concrete supporting beam, armored concrete support rail beam bottom plate, reinforced concrete beam type structure, support rail beam and support rail beam both sides backfill filler, 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

Medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail girder construction
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 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 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 easily deforms, and influences the integral rigidity of structure, and after work Sedimentation 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, the invention provides the stake of medium-and low-speed maglev two-wire embankment location Base beam framing 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 and work after The high request of sedimentation, meets the requirement of the controllability of bedding long-time stability, durability and construction quality again, and economy is more It is good.
To achieve the above object, it is proposed, according to the invention, there is provided including pile foundation bearing structure, reinforced concrete supporting beam, two rows Roadbed filling and the backfill of support rail beam both sides under armored concrete support rail beam bottom plate, two placing of reinforcement concrete beam-type structures, support rail beam Filler, wherein,
The pile foundation bearing structure is provided with many, and the every pile foundation bearing structure is vertically arranged, and every institute Accept the reinforced concrete supporting beam in the top for stating pile foundation bearing structure;
The reinforced concrete supporting beam accepts the armored concrete support rail beam bottom plate;
Reinforced beam described in a corresponding row is accepted respectively in the top for often arranging the armored concrete support rail beam bottom plate Formula structure;
The top of the pile foundation bearing structure is embedded in the reinforced concrete supporting beam and its rigid connection, the armored concrete support Beam and the armored concrete support rail beam bottom plate rigid connection or overlap joint, the armored concrete support rail beam bottom plate and the reinforced concrete Native girder structure is integrally formed to collectively form armored concrete support rail beam;
Filler between support rail beam is set between armored concrete support rail beam bottom plate described in two rows;
Weathering section between wired weathering section, the line is set to have between reinforced concrete beam type structure described in two rows 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;
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;
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 pile foundation bearing structure;Wherein, the shallow layer reinforcement area is arranged on the superficial of soft stratum Layer, and roadbed filling and the vertical consistency of the reinforced concrete beam type structure under the shallow layer reinforcement area, the support rail beam;
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 pile foundation bearing structure sequentially passes through roadbed filling under the support rail beam, the shallow layer reinforcement area Stretched into after the soft stratum in supporting course, so that when soft stratum produces sedimentation, the pile foundation bearing structure can bear to bear Frictional resistance, so that stable bearing capacity is provided to armored concrete support rail beam bottom plate and reinforced concrete beam type structure, to reduce The adverse effect produced by the sedimentation of filler filling body to the vertical of armored concrete support rail beam, vertical and horizontal rigidity.
Preferably, the pile foundation bearing structure 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.The position reinforced concrete supporting beam stitched in support rail beam internode is mixed with reinforcing bar Solidifying soil support rail beam bottom plate is overlapped using pin, and 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 pile foundation bearing structures are arranged in ranks.
Preferably, the cross fall of weathering section is 3%~5% between the line, and head fall is not less than 2 ‰.
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 pile foundation bearing structure, structural reliability height.
(2) pile foundation bearing structure of the invention is goed deep into supporting course, when embankment produces certain sedimentation, pile foundation bearing structure according to Can so negative friction be born and stronger bearing capacity is provided, it is to avoid be caused by filling compaction quality is whard to control uneven heavy Influence to support rail beam vertical and horizontal rigidity is dropped, and structure vertical cross stiffness is more excellent.
(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, and roadbed reclamation and roadbed can be effectively controlled with reference to pile foundation bearing structure Settlement after construction.Non- soft soil zone can more avoid the stiffening basic ground of the wide area produced after embankment slope, and Pile foundation bearing structure construction quality is more easy to control, can effectively control construction quality, and investment reduction shortens the duration, with 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 the lateral connection of joist is made With, also increase structure lateral stiffness and resistance differential settlement deformation ability, the quantity of transverse pile foundation can be reduced, reduce Investment.
(5) setting armored concrete support rail beam bottom plate by framing type is divided to two rows to set, and can avoid making in train load Multi-direction bending is in lower armored concrete support rail beam bottom plate to deform and complex stress condition, it is increasingly complex compared to traditional stress Support rail beam for, framing pile foundation joist type support rail beam can reduce buckling deformation to armored concrete support rail beam bottom plate and upper beam The influence of formula structure.
Brief description of the drawings
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 plane distribution schematic diagram of pile foundation bearing structure of the present invention;
Fig. 4 is pile foundation joist of the present invention and armored concrete support rail beam bottom plate rigid connection connection diagram.
Fig. 5 is that pile foundation joist of the present invention overlaps connection diagram with armored concrete support rail beam bottom plate.
Fig. 6 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. 6 of reference picture, medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail girder construction, including pile foundation Bearing structure 3, reinforced concrete supporting beam 90, two placing of reinforcement concrete support rail beam bottom plates 2, two placing of reinforcement concrete beam-type structures 1, Roadbed filling 5 and support rail beam both sides backfill filler 4 under support rail beam, wherein,
The pile foundation bearing structure 3 is provided with many, and the every pile foundation bearing structure 3 is vertically arranged, and every Accept the reinforced concrete supporting beam 90 in the top of the pile foundation bearing structure 3;
The reinforced concrete supporting beam 90 accepts the armored concrete support rail beam bottom plate 2;
Reinforced beam described in a corresponding row is accepted respectively in the top for often arranging the armored concrete support rail beam bottom plate 2 Formula structure 1;
The top of the pile foundation bearing structure 3 is embedded in the reinforced concrete supporting beam 90 and its rigid connection, the reinforced concrete Native joist 90 and the rigid connection of armored concrete support rail beam bottom plate 2 or overlap joint, the armored concrete support rail beam bottom plate 2 with it is described The shaping of the formed by integrally casting of reinforced concrete beam type structure 1 is so as to collectively form armored concrete support rail beam 9;
Filler 21 between support rail beam is set between armored concrete support rail beam bottom plate 2 described in two rows;
Weathering section tool between wired weathering section, the line is set between reinforced concrete beam type structure 1 described in two rows 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 discharge current;The cross fall of weathering section is weathering section between 3%~5%, more preferably 4%, line between the line Head fall be not less than 2 ‰, in order to draining.
The both sides of reinforced concrete supporting beam 90 are provided with for limiting the horizontal position of the armored concrete support rail beam bottom plate 2 The convex gear platform 91 of shifting;
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 90 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 pile foundation bearing structure 3 sequentially passes through roadbed filling 5, the shallow layer reinforcement under the support rail beam Stretched into after area 6 and the soft stratum 7 in supporting course 8, so that when soft stratum 7 produces sedimentation, the pile foundation bearing structure 3 can Negative friction is born, so as to provide stable carrying to armored concrete support rail beam bottom plate 2 and reinforced concrete beam type structure 1 Power, is produced not with the sedimentation reduced because of filler filling body 10 to the vertical of armored concrete support rail beam 9, vertical and horizontal rigidity Profit influence.
Further, the pile foundation bearing structure 3 is cast-in-situ bored pile, reinforced concrete supporting beam 90 and armored concrete support rail The rigid connection of beam bottom plate 2 or overlap joint, with the rigid connection of pile foundation bearing structure 3.The reinforced concrete supporting beam 90 and reinforcing bar stitched in support rail beam internode The position of concrete support rail beam bottom plate 2 is overlapped using pin 12, and 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 sets the pitch hemp cut 12.2 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 pile foundation bearing structures 3 having are arranged in ranks.
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 90 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 pass to reinforced concrete supporting beam 90 and be delivered to stake again Base bearing structure 3, structural reliability is high, can save the large area stiffening basic ground produced after traditional embankment slope.
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 drilling fillings Stake is noted, vertical and horizontal rigidity is big;And pile foundation bearing structure 3 gos deep into supporting course 8, when soft stratum 7 produces sedimentation, pile foundation carrying Structure 3 can still bear negative friction and provide stronger bearing capacity to armored concrete support rail beam bottom plate 2.
Armored concrete support rail beam bottom plate 2 is set by framing type is divided to two rows to set, and can avoid in High-speed Train Loads Lower armored concrete support rail beam bottom plate 2 is in multi-direction bending and deformed and complex stress condition, increasingly complex compared to traditional stress Support rail beam for, framing pile foundation joist type support rail beam can reduce buckling deformation to armored concrete support rail beam bottom plate 2 and top The influence of girder structure.
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, and roadbed reclamation and roadbed can be effectively controlled with reference to pile foundation bearing structure 3 Settlement after construction.By contrast, the new structure foundation stabilization quantity is small, invests small, and more conducively construction quality and settlement after construction Control, 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 armored concrete support rail beam bottom plate bottom surface absolute altitude to bore Hole pouring pile, i.e. pile foundation bearing structure 3, drilled pile construction should use and small construction technology disturbed to railway embankment, if necessary Steel pile casting is set in embankment altitude range or draws hole;After cast-in-situ bored pile reaches desired strength, cut by code requirement Except pile crown, assembling reinforcement concrete support rail beam bottom plate 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 90, 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 all kinds of built-in fittings are carried out before pouring such as pin, sleeper pedestal connection reinforcing bar, water conservancy diversion rail bearing built-in fitting etc. Positioning is with installing;
(5) each part concrete reaches to distinguish after design strength and backfilled between form removal, reinforced concrete beam type structure lines Intilted transverse drainage slope and longitudinal drainage slope are made in face, then by the thickness range of armored concrete support rail beam bottom plate 2 Bedding filler is backfilled, and backfill face makes outward-dipping weathering and carries out top layer waterproof by design requirement.
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 two-wire embankment location pile foundation joist framing type support rail girder construction, it is characterised in that including pile foundation carrying Structure (3), reinforced concrete supporting beam (90), two placing of reinforcement concrete support rail beam bottom plates (2), two placing of reinforcement concrete beam-type structures (1), roadbed filling (5) and support rail beam both sides backfill filler (4) under support rail beam, wherein,
The pile foundation bearing structure (3) is provided with many, and the every pile foundation bearing structure (3) is vertically arranged, and every Accept the reinforced concrete supporting beam (90) in the top of the pile foundation bearing structure (3);
The reinforced concrete supporting beam (90) accepts the armored concrete support rail beam bottom plate (2);
Reinforced concrete beam type described in a corresponding row is accepted respectively in the top for often arranging the armored concrete support rail beam bottom plate (2) Structure (1);
The top of the pile foundation bearing structure (3) is embedded in the reinforced concrete supporting beam (90) and its rigid connection, the reinforced concrete Native joist (90) and armored concrete support rail beam bottom plate (2) rigid connection or overlap joint, the armored concrete support rail beam bottom plate (2) It is molded to collectively form armored concrete support rail beam (9) with reinforced concrete beam type structure (1) formed by integrally casting;
Filler (21) between support rail beam is set between armored concrete support rail beam bottom plate (2) described in two rows;
Weathering section between wired weathering section, the line is set to have between reinforced concrete beam type structure (1) described in two rows 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 discharge current;
Reinforced concrete supporting beam (90) both sides are provided with for limiting the horizontal position of the armored concrete support rail beam bottom plate (2) The convex gear platform (91) of shifting;
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 backfilling filler for the armored concrete support rail beam bottom plate (2), reinforced concrete supporting beam (90) and support rail beam both sides (4) operation platform is provided, and lateral support is provided for the pile foundation bearing structure (3);Wherein, the shallow layer reinforcement area (6) sets Put the superficial layer in soft stratum (7), and roadbed filling (5) and described under the shallow layer reinforcement area (6), the support rail beam The vertical consistency of 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 pile foundation bearing structure (3) sequentially passes through roadbed filling (5), the shallow layer reinforcement under the support rail beam Stretched into behind area (6) and the soft stratum (7) in supporting course (8), so that when soft stratum (7) produces sedimentation, the pile foundation is held Negative friction can be born by carrying structure (3), so as to armored concrete support rail beam bottom plate (2) and reinforced concrete beam type structure (1) Stable bearing capacity is provided, to reduce the sedimentation because of filler filling body (10) to the vertical, longitudinal of armored concrete support rail beam (9) The adverse effect produced with lateral stiffness.
2. pile foundation joist framing type support rail girder construction in medium-and low-speed maglev two-wire embankment location according to claim 1, it is special Levy and be, the pile foundation bearing structure (3) is cast-in-situ bored pile, reinforced concrete supporting beam (90) and armored concrete support rail beam bottom Plate (2) rigid connection or overlap joint, with pile foundation bearing structure rigid connection.
3. pile foundation joist framing type support rail girder construction in medium-and low-speed maglev two-wire embankment location according to claim 1, it is special Levy and be, the position reinforced concrete supporting beam (90) stitched in support rail beam internode is taken with armored concrete support rail beam bottom plate using pin Connect, remaining position uses rigid connection.
4. pile foundation joist framing type support rail girder construction in medium-and low-speed maglev two-wire embankment location according to claim 1, it is special Levy and be, the height and the height phase of the armored concrete support rail beam bottom plate (2) of the support rail beam both sides backfill filler (4) Deng.
5. pile foundation joist framing type support rail girder construction in medium-and low-speed maglev two-wire embankment location according to claim 1, it is special Levy and be, all these described pile foundation bearing structures (3) are arranged in ranks.
6. pile foundation joist framing type support rail girder construction in medium-and low-speed maglev two-wire embankment location according to claim 3, it is special Levy and be, 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 described The pitch hemp cut is set in stainless steel sleeve pipe and between the two.
7. pile foundation joist framing type support rail girder construction in medium-and low-speed maglev two-wire embankment location according to claim 1, it is special Levy and be, the cross fall of weathering section is 3%~5% between the line, and head fall is not less than 2 ‰.
CN201610825009.5A 2016-09-15 2016-09-15 Medium-and low-speed maglev two-wire embankment location pile foundation joist framing type support rail girder construction Active CN106283947B (en)

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