CN207891713U - Medium-and low-speed maglev traffic combination beam element, medium-and low-speed maglev traffic combination beam, rail system - Google Patents

Abstract

The utility model discloses a kind of medium-and low-speed maglev traffic combination beam elements, the composite beams are U-shaped structure, it includes the lower wing plate and two pieces of upper flanges of reinforced concrete structure, it is the Wavelike steel webplate for curving setback shape that web described in web is installed between the lower wing plate and two pieces of upper flanges, the Wavelike steel webplate includes the straight panel section and tilted plate section that polylith is connected with each other, and the straight panel section is along vertical bridge to arrangement.The utility model also provides a kind of combination beam and rail system that said combination beam element obtains.It is good that the utility model takes full advantage of concrete anti-compression performance, the high advantage of Wavelike steel webplate shearing resistance yield strength, improve the service efficiency of material, and structure stress is clear, dead load can be significantly reduced, so that dead load is mitigated about 20% 30%, while having saved the quantities of bridge superstructure and substructure, is widely portable to the medium and small span bridge of 20 ~ 35m of medium-and low-speed maglev traffic or so.

Description

Medium-and low-speed maglev traffic combination beam element, medium-and low-speed maglev traffic combination beam, track System

Technical field

The utility model belongs to civil engineering bridge technology field more particularly to a kind of composite beams, combination beam, track System.

Background technology

Medium-and low-speed maglev traffic is after traditional railway technology develops more than 100 years, and optimization on its basis creates Novel rail mode.Medium-and low-speed maglev traffic has that low noise, low vibration, Low emissivity, low cost, climbing capacity are strong, turn The advantages such as curved radius is small, have not only saved a large amount of land resource, but also provide safety for the development of urban track traffic Reliable and energy-saving and environment-friendly new selection, is field of urban rail new development direction.In recent years, both at home and abroad in medium-and low-speed maglev Traffic theory is studied and achieves huge achievement in engineer application, to push the application of medium-and low-speed maglev traffic to provide important skill Art supports.

Existing medium-and low-speed maglev traffic elevated bridge mostly uses deck type concrete box-beam bridge structure, and sectional space utilizes Rate is not high, and ride height is big, cannot provide secondary protection for derailment of magnetic levitation train.In addition it is also necessary in box beam upper flange Between the holder of steel construction is additionally set as evacuation platform.

Although traditional city track traffic U type beam can pass through certain improvement（Inside wing plate height higher than outside or Increase deck-molding）And remove additional evacuation platform setting from, but this U-shaped beam is generally concrete material, the disadvantage is that from great, Stock utilization is low.Well known U-shaped beam patent, such as Publication No. CN100585081C, entitled " city track traffic U type beam " Chinese patent, disclose a kind of city track traffic U type beam, it is curved arc shape that beam body, which uses asymmetric U-shaped construction, side, Equal wall thickness web, side are curved arc shape not uniform thickness web, and member section changes greatly, so that web regular reinforcement need to be pre-bent to arc Shape, and reinforcing bar need to use some additional location measures, complicated construction technique, construction quality to be relatively difficult to guarantee.In addition, web area Account for about the 20%-30% of total cross-section, and web is smaller to the contribution of longitudinal rigidity, material use is less efficient.In addition, Publication No. The Chinese patent of CN104963275A, entitled " the compound U-shaped beam of PSC corrugated steels of steel ", disclose a kind of compound PSC ripples of steel The U-shaped beam of steel plate, the web form for using upside to be inclined outwardly, when being such as applied to medium-and low-speed maglev traffic, laterally using double U beams It is arranged in juxtaposition, when lower wing plate meets medium-and low-speed maglev track arrangement, driving limit, left and right sides wing plate can be increased Spacing, so that web is had the tendency that the deformation of lateral flare, be unfavorable for structure stress.In addition, upper limb board size is smaller, can not adapt to The needs of medium-and low-speed maglev traffic.

Utility model content

Technical problem to be solved in the utility model is to overcome the shortcomings of to mention in background above technology and defect, is provided It is a kind of suitable for the composite beams of medium-and low-speed maglev traffic, combination beam, rail system.It is mixed that said combination beam can solve deck type Solidifying soil box girder bridge scetion utilization is low, the U-shaped beam material utilization amount of conventional concrete is big and the existing U-shaped beam stress of Wavelike steel webplate The problems such as unreasonable.In order to solve the above technical problems, the utility model proposes technical solution be：

A kind of medium-and low-speed maglev traffic combination beam element, the composite beams are U-shaped structure comprising armored concrete The lower wing plate of structure and two pieces of upper flanges, web is installed between the lower wing plate and two pieces of upper flanges（Preferably, web is vertical It is fixedly arranged between lower wing plate and two pieces of upper flanges）, the web is the Wavelike steel webplate for curving setback shape, the waveform steel abdomen Plate includes the straight panel section and tilted plate section that polylith is connected with each other, and the straight panel section is along vertical bridge to arrangement.Curve the shape after setback shape At straight panel section and tilted plate section put more energy into mutually, steel plate shearing buckling strength can be improved, the setting of stiffener can be saved.

In above-mentioned medium-and low-speed maglev traffic combination beam element, it is preferred that the length of the length a and tilted plate section of the straight panel section B is equal, and the wavelength X of the Wavelike steel webplate is 1000mm, 1200mm or 1600mm, and the thickness of the Wavelike steel webplate is 12-28mm。

In above-mentioned medium-and low-speed maglev traffic combination beam element, it is preferred that the Wavelike steel webplate is set at the bearing of bridge pier It is equipped with inner lining concrete, weldering nail connector, and the inner lining concrete are equipped between the inner lining concrete and Wavelike steel webplate Length d be not less than the medium-and low-speed maglev traffic combination beam element height h.Liner coagulation is set at composite beams fulcrum Soil, which forms compound web plate, can improve structure partial stress and stability.The weldering being equipped between inner lining concrete and Wavelike steel webplate Nail connector can guarantee the compactness connected between inner lining concrete and Wavelike steel webplate.It is mixed that liner is set on Wavelike steel webplate When solidifying soil, one layer can be poured in several weldering nail connectors of Wavelike steel webplate surface soldered, then on Wavelike steel webplate surface first Concrete.

In above-mentioned medium-and low-speed maglev traffic combination beam element, it is preferred that the two sides and bottom of the upper flange are respectively provided with Have by one piece of steel plate punched form or three blocks of steel plates be welded to each other made of upper encased steel plate, the upper end of the Wavelike steel webplate is solid It is connected on the upper encased steel plate；The root edge both sides of the lower wing plate are also equipped with lower encased steel plate, the Wavelike steel webplate Lower end is fixed on the lower encased steel plate.Upper flange is combined with Wavelike steel webplate and can be increased by encased steel plate with lower wing plate The contact area of Wavelike steel webplate and upper flange, lower wing plate, can fully resist cutting between Wavelike steel webplate and upper and lower wing plate Power, while can play the role of preventing upper and lower wing plate from vertically detaching between Wavelike steel webplate.In addition, the outsourcing at upper and lower wing plate Steel plate is alternatively arranged as the template of upper and lower wing plate construction, facilitates the construction of upper and lower wing plate.

In above-mentioned medium-and low-speed maglev traffic combination beam element, it is preferred that be equipped with bellows, the ripple in the lower wing plate Longitudinal prestressing steel beam is equipped in pipe, the longitudinal prestressing steel beam is to be open to the parabola shaped of the composite beams center Shape.It is made after fully considering medium-and low-speed maglev traffic combination girder construction stress equipped with longitudinal prestressing steel beam in lower wing plate Selection, longitudinal prestressing steel beam in the especially U-shaped lower flange of girder plate parabolically shape in lower wing plate, can make full use of pre- answer The compressive pre-stress that power beam puts down curved offer offsets the parts transversely tensile stress that load generates, and optimizes structure tension performance.

The technical concept total as one, the utility model also provide a kind of medium-and low-speed maglev traffic combination beam, including two A above-mentioned medium-and low-speed maglev traffic combination beam element, two medium-and low-speed maglev traffic combination beam elements are along bridge width side Upward laid out in parallel（In double U parallel fashions）, and the height positioned at the height of the upper flange of inside than the upper flange positioned at outside High 300-400mm.

The technical concept total as one, the utility model also provide a kind of medium-and low-speed maglev traffic combination beam, including two A above-mentioned medium-and low-speed maglev traffic combination beam element, two medium-and low-speed maglev traffic combination beam elements are along bridge width side Upward laid out in parallel, and the adjacent medium-and low-speed maglev traffic combination beam element share the same Wavelike steel webplate with it is same on Wing plate（In " mountain " font）, be located inside upper flange height it is higher 300-400mm than the height of the upper flange positioned at outside.

The technical concept total as one, the utility model also provide a kind of medium-and low-speed maglev traffic combination beam orbit system System, including multiple above-mentioned medium-and low-speed maglev traffic combination beam elements or at least one above-mentioned medium-and low-speed maglev traffic combination beam （Combination beam can be double U parallel fashions or " mountain " font）, the medium-and low-speed maglev traffic combination beam element or medium-and low-speed maglev Track, the section of track are equipped in the U-shaped channel of combination beam, for electric installation and communication device, the track is back-off under described U-shaped steel tendon concrete structure on wing plate, the section of track are fixedly arranged on the track, described equal with communication device for electric installation It is fixedly arranged on the inner surface of the Wavelike steel webplate.

In above-mentioned rail system, it is preferred that be equipped with strong concrete block, the section of track between the track and the section of track The billet and electro-insulating rubber pad for finely tuning section of track elevation are equipped between strong concrete block.

In above-mentioned rail system, it is preferred that the medium-and low-speed maglev composite beams and track be pour at twice and At.The utility model medium-and low-speed maglev traffic combination beam element is to pour at twice with track, during track is not involved in Low speed magnetic floating traffic combination beam element structure entirety stress.

In above-mentioned rail system, the longitudinal platform that 2cm wide is arranged every 12-13m of track stitches, longitudinally disposed between the adjacent section of track The rail gap of 15-30mm is deformed with adapting to section of track longitudinal extension caused by temperature.

In above-mentioned rail system, it is preferred that the structure centre line of the medium-and low-speed maglev traffic combination beam element is floating with magnetic Train center line should coincide with same vertical plane as far as possible.

In above-mentioned rail system, it is preferred that foundation bolt can be embedded on the upper flange positioned inside, be used for affixed shield Column.

Above-mentioned rail system is uplink and downlink two teams, magnetic-levitation train one-way traffic in combination beam.Using the rail of " mountain " font Road system can reduce the engineering quantity of Wavelike steel webplate, cost-effective, in addition, can also mitigate the dead weight of structure to a certain extent. When needing maintenance or emergency evacuation, maintenance personal or passenger can walk on the upper flange positioned inside, and setting guardrail can Improve security performance.

The technical concept total as one, the utility model also provide a kind of applying for medium-and low-speed maglev traffic combination beam element Work method, includes the following steps：

（1）Tie with reinforcing bar is carried out on pedestal, and arranges bellows in the framework of steel reinforcement of lower wing plate；

（2）Wavelike steel webplate, upper encased steel plate and the installation of lower encased steel plate is in place, the Side Template of composite beams is installed With the side template of inner lining concrete；

（3）The concrete and inner lining concrete of upper flange and lower wing plate are poured, scene maintenance to concrete strength reaches 90% or more design value；

（4）Side Template is removed, tensioning longitudinal prestressing steel beam is completed among the above using C50 non-shrinkage concrete sealing off and covering anchorages The construction of low speed magnetic floating traffic combination beam element.

After completing the construction of said combination beam element, then follows the steps below and complete applying for entire combination beam and rail system Work：

（5）Track internal model and external mold are installed, bind regular reinforcement, and pour track concrete, maintenance to concrete Intensity reaches form removal after 80% or more design value；

（6）It lifts on U beams to the bearing of bridge pier；

（7）The section of track is installed, after the section of track is accurately positioned, cast-in-place strong concrete block completes entire combination beam and track The construction of system.

For medium-and low-speed maglev traffic combination beam element in the utility model as a kind of base-supporting beam bridge unit, section is empty Between utilization rate it is high, lower wing plate can reduce support rail countertop absolute altitude as the support member of track.Web, which removes, is used as stress Outside component, noise barrier can be doubled as simultaneously（When more demanding to ambient noise, gobo is added on upper flange that can be on the outside Barrier）, inner surface can also lay for electric installation and communication device.Structure in the utility model is handed over existing medium-and low-speed maglev The logical deck type box bridge structure used（As Changsha magnetic floats cable release engineering separate type without edge of a wing small box girder, Beijing medium-and low-speed maglev Traffic demonstration line S1 line monoblock types have edge of a wing box beam）It is compared with traditional track traffic U type beam, it is with the obvious advantage.

Compared with prior art, the utility model has the advantage of：

1, the utility model belongs to the U-shaped combination beam of Wavelike steel webplate, and it is good to take full advantage of concrete anti-compression performance, waveform steel Two kinds of materials of steel and concrete are effectively combined, improve the use of material by the high advantage of web shearing resistance yield strength Efficiency, and structure stress is clear, the problem of avoiding cracking in webs.

2, compared to traditional concrete U-type beam, web is replaced with corrugated sheet steel by the utility model by armored concrete, Dead load can be significantly reduced, dead load is made to mitigate about 20%-30%, while having saved bridge superstructure and substructure The problems such as quantities can also improve prestressing force efficiency, avoid cracking in webs improves bridge overall durability.Meanwhile waveform steel After web substitutes concrete web, web templates are eliminated, Wavelike steel webplate is alternatively arranged as lower wing plate side form, reduces engineering and makes Valence.In addition, mitigating dead load is conducive to prefabricated assembled construction, the requirement to transport is reduced, speed of application is further speeded up.

3, the utility model eliminates the stretching process of the processing of web regular reinforcement, binding and prestressing tendon, to contract Casual labourer's phase reduces construction cost.

4, upper flange is set as not contour form in the utility model, using upper flange on the inside of combination beam as access path or Evacuation platform can save steel structure support.

5, the main material of the rail system of the utility model is corrugated sheet steel, prestressed concrete and reinforced concrete Soil organically combines structure stress, economic performance, sound insulation and noise reduction, beauty, operation maintenance etc., is a kind of environmental-friendly The structure type of type and resource-conserving can achieve the effect that reduce structure height and reduce vision, noise pollution simultaneously.

Description of the drawings

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is this Some embodiments of utility model, for those of ordinary skill in the art, without creative efforts, also It can be obtain other attached drawings according to these attached drawings.

Fig. 1 is the cross-sectional configuration schematic diagram of embodiment middle orbit system.

Fig. 2 is the cross-sectional configuration schematic diagram of another rail system in embodiment.

Fig. 3 is side structure schematic diagram in Fig. 1（It is not shown in figure noise barrier and magnetic-levitation train）.

Fig. 4 is the cross-section diagram in the faces B-B in Fig. 3.

Fig. 5 is the partial enlarged view of B in Fig. 1.

Fig. 6 is the partial enlarged view of C in Fig. 1.

Fig. 7 is the partial enlarged view of A in Fig. 1.

Fig. 8 is the partial enlarged view of D in Fig. 1.

Fig. 9 is the cross-section diagram in the faces C-C in Fig. 8.

Figure 10 is the dimensional structure diagram of embodiment middle orbit system.

Marginal data：

1, noise barrier；2, upper flange；201, outside upper flange；202, inside upper flange；3, Wavelike steel webplate；31, straight Plate section；32, tilted plate section；4, inner lining concrete；5, lower wing plate；6, longitudinal prestressing steel beam；61, bellows；7, for electric installation； 71, power supply electric wire；72, power supply wire rack；8, communication device；81, communication cable；82, communication cable holder；9, bearing；10、 Bridge pier；11, weldering nail connector；12, the section of track；121, tablet；122, F steel rail；123, H-type sleeper；124, high-strength bolt； 16, strong concrete block；18, track；20, guardrail；21, magnetic-levitation train；N26, girder construction center line；N27, magnetic-levitation train Center line；29, upper encased steel plate；N30, reference line；33, lower encased steel plate；40, billet；41, electro-insulating rubber pad.

Specific implementation mode

For the ease of understanding the utility model, below in conjunction with Figure of description and preferred embodiment to the utility model Work more comprehensively, meticulously describes, but the scope of protection of the utility model is not limited to embodiment in detail below.

Unless otherwise defined, all technical terms used hereinafter and the normally understood meaning of those skilled in the art It is identical.Technical term used herein is intended merely to the purpose of description specific embodiment, is not intended to and limits this practicality Novel protection domain.

Unless otherwise specified, various raw material used in the utility model etc. can be commercially available by market or Person can be prepared by existing method.

Embodiment：

As shown in Figure 1, Figure 2, shown in Figure 10, the medium-and low-speed maglev traffic combination beam element of the present embodiment, composite beams are U-shaped Structure comprising the lower wing plate 5 of reinforced concrete structure and two pieces of upper flanges 2, it is fixed between lower wing plate 5 and two pieces of upper flanges 2 It is the Wavelike steel webplate 3 for curving setback shape to have web, web, and Wavelike steel webplate 3 includes the straight panel section 31 that polylith is connected with each other With tilted plate section 32, straight panel section 31 is along vertical bridge to arrangement.In the present embodiment, Wavelike steel webplate 3 is thin-walled steel plate, it is preferred that waveform Steel web 3 is vertical with upper flange 2, lower wing plate 5.

As shown in Figure 3, Figure 4, in the present embodiment, the length a of straight panel section 31 and the length b of tilted plate section 32 are equal, and waveform The wavelength X of steel web 3 is 1000mm, 1200mm or 1600mm, and the thickness of Wavelike steel webplate 3 is 12-28mm.

As shown in figure 4, in the present embodiment, Wavelike steel webplate 3 is arranged at medium-and low-speed maglev traffic combination beam element bearing 9 There is inner lining concrete 4, weldering nail connector 11, and the length of inner lining concrete 4 are equipped between inner lining concrete 4 and Wavelike steel webplate 3 It spends d and is not less than medium-and low-speed maglev traffic combination beam element height h.The formation of inner lining concrete 4 is set at composite beams fulcrum Compound web plate can improve structure partial stress and stability.Weldering nail connector 11 can guarantee inner lining concrete 4 and waveform steel abdomen The compactness connected between plate 3.It, first can be on 3 surface of Wavelike steel webplate when inner lining concrete 4 is arranged on Wavelike steel webplate 3 Several weldering nail connectors 11 are welded, then a layer concrete is cast on 3 surface of Wavelike steel webplate.

As shown in Figure 5, Figure 6, in the present embodiment, the two sides and bottom of upper flange 2 are both provided with by one piece of steel plate punched Form or three blocks of steel plates be welded to each other made of upper encased steel plate 29, the upper end of Wavelike steel webplate 3 is welded in encased steel plate 29 On；The root edge both sides of lower wing plate 5 are also equipped with lower encased steel plate 33, and the lower end of Wavelike steel webplate 3 is welded in lower encased steel plate 33 On.Upper flange 2 and lower wing plate 5 by upper encased steel plate 29, lower encased steel plate 33 is combined with Wavelike steel webplate 3 can increase waveform The contact area of steel web 3 and upper flange 2, lower wing plate 5, can fully resist Wavelike steel webplate 3 and upper flange 2, lower wing plate 5 it Between shearing, while can play the role of preventing from vertically detaching between upper flange 2, lower wing plate 5 and Wavelike steel webplate 3.In addition, upper limb The template that encased steel plate at plate 2, lower wing plate 5 is alternatively arranged as upper flange 2, lower wing plate 5 is constructed, facilitates upper flange 2, lower wing plate 5 Construction.

As shown in Figure 8, Figure 9, in the present embodiment, bellows 61 is equipped in lower wing plate 5, be equipped with longitudinal direction in bellows 61 answers in advance Power steel beam 6, longitudinal prestressing steel beam 6 are parabolic shape of the opening to composite beams center.Longitudinal prestressing steel beam 6 is compared In reference line N30 parabolically shapes, the compressive pre-stress that prestressing force puts down curved offer can be made full use of to offset the portion that load generates Divide horizontal tensile stress, optimizes structure tension performance.

As shown in Figure 1, also provide a kind of medium-and low-speed maglev traffic combination beam in the present embodiment, including two it is above-mentioned in it is low Fast magnetic floating traffic composite beams, two medium-and low-speed maglev traffic combination beam elements laid out in parallel along bridge width direction, and Upper flange 2 positioned inside（Inside upper flange 202）Height than the upper flange 2 positioned at outside（Outside upper flange 201）Height Spend high 300-400mm.

As shown in Fig. 2, also provide another medium-and low-speed maglev traffic combination beam in the present embodiment, including during two above-mentioned Low speed magnetic floating traffic combination beam element, two medium-and low-speed maglev traffic combination beam elements laid out in parallel along bridge width direction, And adjacent medium-and low-speed maglev traffic combination beam element shares same Wavelike steel webplate 3 and same upper flange 2（Inside upper flange 202）, be located inside upper flange 2 height it is higher 300-400mm than the height of the upper flange 2 positioned at outside.

A kind of medium-and low-speed maglev traffic combination beam orbit system, including multiple above-mentioned middle low speed are also provided in the present embodiment Magnetic floating traffic composite beams or multiple above-mentioned medium-and low-speed maglev traffic combination beams, medium-and low-speed maglev traffic combination beam element or Track 18, the section of track 12 are equipped in the U-shaped channel of medium-and low-speed maglev traffic combination beam, for electric installation 7（Including power supply electric wire 71 with Power supply wire rack 72）With communication device 8（Including communication cable 81 and communication cable holder 82）, track 18 is back-off under U-shaped steel tendon concrete structure on wing plate 5, the section of track 12 are fixedly arranged on track 18, fixed with communication device 8 for electric installation 7 In the inner surface of Wavelike steel webplate 3.

As shown in fig. 7, in the rail system of the present embodiment, strong concrete block is equipped between track 18 and the section of track 12 16, the billet 40 and electro-insulating rubber pad for finely tuning 12 elevation of the section of track are equipped between the section of track 12 and strong concrete block 16 41。

In the rail system of the present embodiment, the section of track 12 is by tablet 121, F shaped steel rails 122, H-type sleeper 123 and high-strength spiral shell Bolt 124 forms, and 123 spacing of H-type sleeper is 1.0-1.2m, and 12 long 12.5m of the section of track is installed using monoblock type.Track 18 and rail Row 12 between be equipped with strong concrete block 16, the section of track 12 be connected to by high-strength bolt 124 be embedded in it is high-strength on track platform It spends on concrete block 16.

In the rail system of the present embodiment, medium-and low-speed maglev traffic combination beam element and track 18 be pour at twice and At.Medium-and low-speed maglev traffic combination beam element is to pour at twice with track 18, and track 18 is not involved in middle low speed magnetic Floating traffic combination beam element structure entirety stress.

In the rail system of the present embodiment, the girder construction center line N26 and magnetic of medium-and low-speed maglev traffic combination beam element are floating The magnetic-levitation train center line N27 of train 21 should coincide with same vertical plane as far as possible.

In the rail system of the present embodiment, the longitudinal platform seam that 2cm wide is set every 12-13m of track 18.The adjacent section of track 12 Between longitudinally disposed 15-30mm rail gap, with adapt to the section of track caused by temperature longitudinal extension deform.

In the rail system of the present embodiment, when more demanding to noise circumstance, sound insulation can be set on outside upper flange 201 Barrier 1.

As shown in Figure 1 and Figure 2, in the rail system of the present embodiment, it is embedded with ground on the inside upper flange 202 of rail system Foot bolt, for being connected with guardrail 20.When needing maintenance or emergency evacuation, maintenance personal or passenger can be in inside upper flanges It walks on 202, setting guardrail 20 can improve safety.

The construction method of the medium-and low-speed maglev traffic combination beam element of the present embodiment, includes the following steps：

（1）Tie with reinforcing bar is carried out on pedestal, and bellows 61 is arranged in the framework of steel reinforcement of lower wing plate 5；

（2）Wavelike steel webplate 3, upper encased steel plate 29 and lower encased steel plate 33 are installed in place, composite beams are installed The side template of Side Template and inner lining concrete 4；

（3）The concrete and inner lining concrete 4 of upper flange 2 and lower wing plate 5 are poured, scene maintenance to concrete strength reaches To 90% or more design value；

（4）Side Template is removed, tensioning longitudinal prestressing steel beam 6 is completed among the above using C50 non-shrinkage concrete sealing off and covering anchorages The construction of low speed magnetic floating traffic combination beam element.

After completing the construction of said combination beam element, then follows the steps below and complete applying for entire combination beam and rail system Work：

（5）18 internal model of track and external mold are installed, bind regular reinforcement, and pour 18 concrete of track, is conserved to mixed Solidifying soil intensity reaches form removal after 80% or more design value；

（6）It lifts on U beams to the bearing 9 of bridge pier 10；

（7）The section of track 12 is installed, after the section of track 12 is accurately positioned, cast-in-place strong concrete block 16 completes entire combination beam With the construction of rail system.

Medium-and low-speed maglev traffic combination beam element in the present embodiment is as a kind of base-supporting beam bridge unit, sectional space profit With rate height, lower wing plate 5 can reduce the absolute altitude of 18 top surface of track, medium-and low-speed maglev as the support member of track 18 Traffic combination beam element can double as noise barrier simultaneously（Noise barrier 1 can be increased on upper flange 201 on the outside）.The present embodiment is A kind of environmentally friendly and resource-conserving structure type, can reach simultaneously reduces structure height and reduction vision, noise The effect of pollution.Medium-and low-speed maglev traffic combination beam element in the present embodiment belongs to reinforced concrete U-shaped combination beam, beam body Main material is Wavelike steel webplate 3, prestressed concrete, armored concrete and shear connector, takes full advantage of coagulation Native resistance to compression, the high advantage of 3 shearing resistance yield strength of Wavelike steel webplate effectively combine two kinds of materials of steel and concrete, by U Type combined beam structure stress, economic performance, sound insulation and noise reduction, beauty, operation maintenance etc. organically combine, and improve material Service efficiency, and structure stress is clear.Compared to traditional U-shaped beam, web is replaced with into waveform steel abdomen by armored concrete Plate 3 can significantly reduce dead load, reduce dead load about 20%-30%, can save the engineering of superstructure and substructure Amount, is widely portable to the medium and small span bridge of medium-and low-speed maglev traffic 20-35m or so.Prestressing force efficiency can also be improved, is kept away Exempt from cracking in webs problem, improves bridge overall durability.Upper flange is set as not contour form, by upper flange on the inside of combination beam As access path or evacuation platform, steel structure support can be saved.

In addition, reducing dead load is conducive to prefabricated assembled construction, speed of application is further speeded up.In addition, this implementation Example eliminates the stretching process of the processing of web regular reinforcement, binding and prestressing tendon, can significantly shorten the construction period, reduction is constructed into This.

Claims (9)

1. a kind of medium-and low-speed maglev traffic combination beam element, the composite beams are U-shaped structure comprising armored concrete knot The lower wing plate of structure（5）With two pieces of upper flanges（2）, the lower wing plate（5）With two pieces of upper flanges（2）Between be installed with web, it is special Sign is that the web is the Wavelike steel webplate for curving setback shape（3）, the Wavelike steel webplate（3）It is mutually interconnected including polylith The straight panel section connect（31）And tilted plate section（32）, the straight panel section（31）Bridge is indulged to arrangement in edge.

2. medium-and low-speed maglev traffic combination beam element according to claim 1, which is characterized in that the straight panel section（31）'s Length a and tilted plate section（32）Length b it is equal, and the Wavelike steel webplate（3）Wavelength X be 1000mm, 1200mm or 1600mm, the Wavelike steel webplate（3）Thickness be 12-28mm.

3. medium-and low-speed maglev traffic combination beam element according to claim 1, which is characterized in that the Wavelike steel webplate （3）In bridge pier（10）Bearing（9）Place is provided with inner lining concrete（4）, the inner lining concrete（4）With Wavelike steel webplate（3） Between be equipped with weldering nail connector（11）, and the inner lining concrete（4）Length d be not less than the medium-and low-speed maglev traffic combination Beam element height h.

4. medium-and low-speed maglev traffic combination beam element according to any one of claim 1-3, which is characterized in that on described Wing plate（2）Two sides and bottom be both provided with by one piece of steel plate punched form or three blocks of steel plates be welded to each other made of upper outsourcing Steel plate（29）, the Wavelike steel webplate（3）Upper end be fixed in the upper encased steel plate（29）On；The lower wing plate（5）Bottom Edge both sides are also equipped with lower encased steel plate（33）, the Wavelike steel webplate（3）Lower end be fixed in the lower encased steel plate（33） On.

5. medium-and low-speed maglev traffic combination beam element according to any one of claim 1-3, which is characterized in that under described Wing plate（5）It is interior to be equipped with bellows（61）, the bellows（61）It is interior to be equipped with longitudinal prestressing steel beam（6）, the longitudinal prestressing Steel beam（6）For the parabolic shape to the composite beams center that is open.

6. a kind of medium-and low-speed maglev traffic combination beam, which is characterized in that including two as described in any one of claim 1-5 Medium-and low-speed maglev traffic combination beam element, two medium-and low-speed maglev traffic combination beam elements are arranged side by side along bridge width direction Arrangement, and positioned at the upper flange of inside（2）Height than the upper flange positioned at outside（2）The high 300-400mm of height.

7. a kind of medium-and low-speed maglev traffic combination beam, which is characterized in that including two as described in any one of claim 1-5 Medium-and low-speed maglev traffic combination beam element, two medium-and low-speed maglev traffic combination beam elements are arranged side by side along bridge width direction Arrangement, and the adjacent medium-and low-speed maglev traffic combination beam element shares the same Wavelike steel webplate（3）With same upper flange （2）, it is located at the upper flange of inside（2）Height than the upper flange positioned at outside（2）The high 300-400mm of height.

8. a kind of medium-and low-speed maglev traffic combination beam orbit system, which is characterized in that including any one of multiple claim 1-5 Medium-and low-speed maglev traffic combination beam described in the medium-and low-speed maglev traffic combination beam element or at least one claim 6 Or the medium-and low-speed maglev traffic combination beam described at least one claim 7, the medium-and low-speed maglev traffic combination beam element Or track is equipped in the U-shaped channel of medium-and low-speed maglev combination beam（18）, the section of track（12）, for electric installation（7）With communication device （8）, the track（18）To be buckled in the lower wing plate（5）On U-shaped steel tendon concrete structure, the section of track（12）It is fixed In the track（18）On, it is described for electric installation（7）With communication device（8）It is fixedly arranged on the Wavelike steel webplate（3）It is interior Surface.

9. medium-and low-speed maglev traffic combination beam orbit system according to claim 8, which is characterized in that the track （18）With the section of track（12）Between be equipped with strong concrete block（16）, the section of track（12）With strong concrete block（16）Between Equipped with for finely tuning the section of track（12）The billet of elevation（40）With electro-insulating rubber pad（41）.