CN101555679A - Dual-layer steel truss-Ferris wheel combined bridge - Google Patents
Dual-layer steel truss-Ferris wheel combined bridge Download PDFInfo
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- CN101555679A CN101555679A CNA2009100687889A CN200910068788A CN101555679A CN 101555679 A CN101555679 A CN 101555679A CN A2009100687889 A CNA2009100687889 A CN A2009100687889A CN 200910068788 A CN200910068788 A CN 200910068788A CN 101555679 A CN101555679 A CN 101555679A
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Abstract
The invention discloses a dual-layer steel truss-Ferris wheel combined bridge, comprising a main bridge, support tower posts and a Ferris wheel; the main bridge adopts a dual-layer steel truss beam structural form and is provided with at least two longitudinal main trusses; the main trusses adopt steel box type cross-section rod parts; longitudinal and transverse beams are used between the main trusses for connection; an opening is formed on the bridge surface which is positioned at the upper layer of the main bridge; a foundation of the main bridge is a first foundation; the support tower posts are two inverted V-shaped tower posts with steel structure; a foundation of the tower posts is a second foundation; a support tower post cross beam is arranged at the top parts of the two inverted V-shaped tower posts with steel structure; the first foundation and the second foundation constitute a compound wheel bridge foundation; a wheel disc of the Ferris wheel is arranged in an opening positioned on the bridge surface of the upper layer of the main bridge; and a central rotary shaft thereof and the support tower post cross beam are the same member. The bridge can eliminate the hidden problem of indefinite structure stress existing in the integration of a wheel bridge structure, decrease the mutual influences between the bridge and the Ferris wheel, reduce the diameter of a bearing of the central rotary shaft and greatly reduce the risks of processing and assembling the Ferris wheel bridge.
Description
Technical field
The present invention relates to a kind of bridge, particularly a kind of clad steel truss-ferris wheel combined bridge.
Background technology
Ferris wheel generally is that English is to the address of ultra-large type Ferris Wheel more than 100 meters: Giant Wheel is that disk drives the car of carrying around the rotating at a slow speed recreation facility of horizontal axis.The passenger is sitting in ferris wheel up commentaries on classics slowly, scenery around can looking down from eminence.As the motor-driven recreation of a kind of playground, be collectively referred to as the good reputation of " three treasures of paradise " with roller coaster, carrousel.Because the view that moulding as the equipment wheel and huge duty area so ferris wheel become amusement park and urban landmark always.At present, ferris wheel is subjected to each metropolis favor more and more, becomes the architectural design of creating special landscape, having the terrestrial reference meaning.Listed the ferris wheel that highly surpasses 100m at present in the world in the table 1.
Table 1 world is according to the ferris wheel list of diameter rank
Ferris wheel mainly is made up of support, main shaft, rotating disk, several parts of car.Support is the main bearing member of the whole ferris wheel of supporting, adopts rectangle or round steel pipe usually, is symmetrical arranged more, and also with good grounds physical features and construction technology single face are provided with, as " The London Eye "; Main shaft is the rotary main shaft of ferris wheel, and rotating disk also links to each other with support by main shaft simultaneously; Rotating disk be ferris wheel most important, also be the part that best embodies ferris wheel characteristic and technology content; Car claims again to see the cable car passenger cabin, is evenly arranged in around the rotating disk, supplies the visitor to ride in the usefulness of high-altitude view, and its stable and balance is directly related with view visitor's comfortableness.Different ferris wheels according to the turntable structure pattern are divided into following three kinds: flexible (all steel Cable Structure, with The London Eye is representative), semi-rigid (truss cable wire hybrid architecture, with Jin Jiang River paradise, Shanghai ferris wheel is representative) and three kinds of full rigidity (full trussed construction is representative with many ferris wheels of star and Japan in Nanchang).
Steel truss is the open web type flexural member that mainly bears transverse load.Compare with solid web girder, when striding the footpath when big, it has steel using amount economizes, and rigidity is big, and manufacturing, transportation, assembly unit are convenient, can make characteristics such as various profile according to load situation and service condition.The range of application of steel truss is very extensive, especially lower support type steel truss beam bridge; The structures such as arch rib of the girder of the stiff girder of suspension bridge, cable stayed bridge, arch bridge also often adopt steel truss in addition.To the twentieth century initial stage,,, a large amount of railways and public, iron duplex iron truss bridge have been built for crossing over the great rivers place along with the continuous expansion of mankind's activity scope and the demand of railway transportation.At present, China's steel girder bridge is railway or public affairs, iron combined bridge basically, but using steel girder bridge aspect the Urban Bridge construction is very limited, therefore, how improving the design level of steel girder bridge aspect Urban Bridge is a problem with realistic meaning that promotes that highway in China construction development faces.
Publication number is CN101158143, discloses a kind of double-deck bridge floor combined trussed girder bridge in the Chinese invention patent application that open day is on April 9th, 2008, is made up of upper strata concrete slab, steel structure web member and lower-layer concrete bridge deck.Its levels bridge floor all adopts concrete slab, and the levels bridge floor all mainly bears vehicular load; The levels concrete slab both uses as the bridge deck plate that bears vehicular load, simultaneously whole stressed as the upper and lower string parts participation structure of trusses.Steel structure web member is made up of diagonal web member and perpendicular web member, and upper and lower layer concrete bridge deck are linked to be integral body, is used to resist the shearing of truss bridge.The weak point that the double-deck bridge floor combined trussed girder bridge of being realized by technique scheme exists is: the levels concrete slab of bridge is not only born the effect of carriageway plate in lateral stressed system, it also is the upper and lower chord member of main couple in the longitudinal stress system, be that the only surplus steel web member of structure main truss is born shearing, upper and lower chord member all replaces with concrete slab, the stressed complexity of steel web and concrete slab junction, because its Path of Force Transfer is unintelligible, indeterminate, thereby can not obtain high safety factor, and difficulty of construction is bigger.
Publication number is JP2005139834 (A), discloses a kind of ferris wheel bridge in the Japan Patent that open day is on November 10th, 2003, and this ferris wheel bridge comprises bridge construction, ferris wheel and the pylon of crossing over the river, and its bridge wheel construction is an one.Wherein, main bridge in the bridge construction adopts the cable stayed bridge form of structure of portal-rigid frames system, described main bridge comprises between main span and the access bridge strides steel bridge, ferris wheel is positioned at main bridge main span central authorities, ferris wheel comprises radial drag-line and wheel rim truss, its wheel disc is a steel truss structure, becomes whole with the wheel hub drawknot of center-wheel arbor by prestressed cable; The cable stayed bridge king-tower is the Zee bar steel Z of falling Y structure rigid frame (the promptly common alleged frame of falling Y), the frame of falling Y root is hinged, described cable stayed bridge king-tower is made up of three straight line box-structures that are in 120 degree, the intersection point place of each frame of falling Y is provided with six pairs of radial hoist cables (being that the bridge floor suspension cable compiles at the intersection point place of the both sides frame of falling Y), this hoist cable main bridge main span structure of slinging.The center-wheel arbor of described ferris wheel (axis of rotation) is arranged on the gantry beam of the above-mentioned top of the trellis of falling Y.Technique scheme is to utilize the load of bridge construction supporting ferris wheel, has realized building ferris wheel on bridge, to effectively utilize space and the bridge construction on the river.Portal-rigid frames system lateral stiffness in the technique scheme a little less than; The frame of falling Y root is hinged, and is unfavorable for lateral stiffness; The frame of falling Y leans on the bridge floor balance to the thrust at two ends, has increased the burden of bridge floor; The gantry beam of the frame of falling Y is the main bearing member of bridge, it is again the supporting of the central rotating shaft of ferris wheel, there is the indefinite hidden danger of structure stress, and influencing each other between bridge and the ferris wheel is bigger, in addition, because this gantry beam is dual stressed, not only the diameter of ferris wheel rotary main shaft is very big, and bearing outside diameter can be bigger, all brings great risk for the processing of ferris wheel bridge and assembling.
Summary of the invention
At above-mentioned prior art, the invention provides a kind of clad steel truss-ferris wheel combined bridge, the present invention is in the monolithic architecture style that keeps being provided with on the truss master bridge ferris wheel, but the technical scheme of take to take turns, the bridge major structure of construction separating, thereby can overcome existing big, the ferris wheel rotary main shaft and bearing diameter is big, the processing of ferris wheel bridge and the defective that assembling has a big risk of influencing each other of taking turns between stressed indeterminate, bridge of bridge construction and the ferris wheel in the prior art.
In order to solve the problems of the technologies described above, the technical scheme that the clad steel truss-the ferris wheel combined bridge is achieved of the present invention is: comprise main bridge, supporting tower frame and ferris wheel, described main bridge adopts the structural shape of clad steel girder truss, described main bridge is provided with the vertical main couple of twice at least, and described main couple adopts steel box section rod member; Adopt longitudinal and transverse beam to connect between the described main couple, the bridge floor between the uplink and downlink track of the upper layer bridge of described main bridge is provided with an opening; The basis of described main bridge is first basis; Described supporting tower frame is two people's Zee bar steel Z structure towers, and everyone is made of three straight line shaped steel casings that are mutually 120 degree by the Zee bar steel Z structure tower; The basis of described two people's Zee bar steel Z structure towers is second basis, and the top of described two people's Zee bar steel Z structure towers is connected with the supporting tower frame crossbeam; Described first basis and second basis are combined type wheel abutment plinth; Described ferris wheel comprises the car on wheel disc, central rotating shaft and the wheel disc periphery, and described wheel disc is arranged in the opening of above-mentioned upper layer bridge bridge floor; Described central rotating shaft and described supporting tower frame crossbeam are same member.
Clad steel truss of the present invention-ferris wheel combined bridge, wherein, the upper layer bridge of described main bridge adopts the steel fiber reinforced concrete bridge floor plate, and lower floor's bridge of described main bridge adopts steel bridge deck.The web member of described main couple adopts the V-shape diagonal web member.Described main couple adopts full welding, bolt to connect or riveted joint.What lower floor's bridge of described main bridge was provided with ferris wheel steps on the cabin platform.Described ferris wheel wheel disc is all steel Cable Structure, truss cable wire hybrid architecture or full trussed construction.Described all steel Cable Structure wheel disc is made of the radial drag-line of full flexibility and the steel pipe truss rim of erect on the central river surface of main bridge.Car on the described ferris wheel wheel disc periphery is 48 cars that hang along branches such as this wheel disc peripheries.Described car adopts gravity ferris wheel car or view ferris wheel car.Described gravity ferris wheel car adopts servomotor control.
Compared with prior art, the beneficial effect of clad steel truss of the present invention-ferris wheel combined bridge is:
The present invention is under the prerequisite of the architectural image that has a ferris wheel above the maintenance bridge, double-deck trussed bridge and ferris wheel are set to take turns the building of bridge unification, and adopt bridge wheel body structure to separate, make ferris wheel between the uplink and downlink bridge, but ferris wheel supporting basis and bridge main couple basis are combined into the wheel abutment plinth of a combined type.Therefore, clad steel truss of the present invention-ferris wheel combined bridge can be eliminated the indefinite hidden danger of the wheel integrated existing structure stress of bridge construction; Reduce influencing each other between bridge and the ferris wheel; Dwindle the diameter of ferris wheel centre rotational axis bearing, reduced the risk of processing of ferris wheel bridge and assembling significantly.
Description of drawings
Fig. 1 is that the end of clad steel truss of the present invention-ferris wheel combined bridge is to view;
Fig. 2 is the lateral view of bridge shown in Figure 1;
Fig. 3 is the vertical view of bridge shown in Figure 1.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done to describe in further detail.
Main parts size of the present invention and specification specified:
10. main bridge, 20. supporting tower frames, 30. ferris wheels, 40. combined types wheel abutment plinth, 11. upper layer bridges, 12. lower floor's bridge, 13. main couples, 16. openings, 17. first bases, 22. second bases, 23. supporting tower frame crossbeam (central rotating shaft), 31. wheel discs, 32. cars, 33. drag-lines, 34. rims.
As Fig. 1, Fig. 2 and shown in Figure 3, the technical scheme that the clad steel truss-the ferris wheel combined bridge is achieved of the present invention is: comprise main bridge 10, supporting tower frame 20, ferris wheel 30 and combined type wheel abutment plinth 40; Described main bridge 10 adopts the structural shape of clad steel girder trusses, and the upper layer bridge 11 of described main bridge adopts the steel fiber reinforced concrete bridge floor plates, and lower floor's bridge 12 of described main bridge adopts steel bridge decks, and what lower floor's bridge 12 of described main bridge was provided with ferris wheel 30 steps on the cabin platform; Described main bridge is provided with the vertical main couple 13 of twice at least, described main couple 13 adopts steel box section rod member, adopted the vertical main couple 13 in four roads in the embodiment of the invention, usually the web member of this vertical main couple 13 is made up of brace and montant mostly, current in to strengthen the traffic capacity of bridge on lower floor's bridge floor for the ease of the pedestrian, and obtain bigger bridge floor area as much as possible, the web member of the main couple 13 in the bridge of the present invention preferably all adopts the V-shape diagonal web member, described main couple 13 can adopt full welding, bolt connects or riveting process connects, adopt vertical between per two adjacent main couples 13, crossbeam connects, be positioned at described main bridge 10 upper layer bridge 11 on, bridge floor between the descending track is provided with an opening 16; The basis of described main bridge 10 is first basis 17; The supporting tower frame 20 of described ferris wheel 30 is two people's Zee bar steel Z structure towers, and everyone is made of three straight line shaped steel casings that are mutually 120 degree by the Zee bar steel Z structure tower; The basis of described everyone Zee bar steel Z structure tower is second basis 22, and the top of described two people's Zee bar steel Z structure towers is connected with supporting tower frame crossbeam 23; The basis that is positioned at four tower leg roots of two people's Zee bar steel Z structure towers place is a combined type wheel abutment plinth, and this combined type wheel abutment plinth 40 is by one first basis, 17 and 1 second basic 22 be combined intos.
Described ferris wheel 30 comprises the car 32 on wheel disc 31, central rotating shaft and wheel disc 31 peripheries, described wheel disc 31 can adopt all steel Cable Structure, truss cable wire hybrid architecture or full trussed construction, as shown in Figure 1, the wheel disc of the ferris wheel in the embodiment of the invention preferably adopts by the radial drag-line 33 of full flexibility of erect and the wheel disc that steel pipe truss rim 34 constitutes on the central river surface of main bridge, and described wheel disc 31 is arranged in the opening 16 of above-mentioned upper layer bridge bridge floor; Described central rotating shaft and described supporting tower frame crossbeam 23 are same member.
Ferris wheel car 32 claims to see the cable car passenger cabin again, supplies the visitor to ride in the usefulness of high-altitude view, and its stable and balance is directly related with view visitor's comfortableness.According to the difference of running mechanism, the ferris wheel car can be divided into two kinds of gravity ferris wheel (FerrisWheel) and view ferris wheels (Observation Wheel).Passenger cabin on the view ferris wheel then is the outside that is suspended in wheel, needs complicated connecting rod class frame for movement, along with the position that the compartment rotates is adjusted its maintenance level synchronously.Car 32 in the embodiment of the invention adopts the passenger cabin of gravity ferris wheel, comprises 48 cars that hang along branches such as wheel disc 31 peripheries, adopts servomotor control, and keeps level with gravity.
A kind of embodiment of clad steel truss of the present invention-ferris wheel combined bridge is as follows:
Clad steel trussed bridge in clad steel truss of the present invention-ferris wheel combined bridge, its upper layer bridge 11 is a motorway, its lower floor's bridge 12 is bicycle and walking channel and commercial space.The footpath of striding of main couple is arranged as 24.47m+45m+24.47m, and adopt three Span Continuous truss, vertically " V " type main stress truss of four roads is set altogether, its longitudinal stress system is four Pin all steel truss, the upper and lower chord member of main couple and web member all adopt the rod member of all-welded steel box section structure, the Path of Force Transfer of this main couple is clear, clear and definite, the safety factor height.Design parameters is: the center to center distance between the main truss is 10.5m+8m+10.5m, and the purlin height is 4.0～6.0m, and connects into integral body by top bracing, bottom lateral bracing; Arrange the upper and lower crossbeam of the upper and lower chord member quadrature of some roads and main truss, be provided with again between the crossbeam some along bridges to I-shaped stringer, thereby formed the panel grider system of levels bridge floor.Lower floor's bridge floor primary load is the crowd, and is less relatively, can weld the thick steel plate of 12mm as bridge deck on the panel grider of above-mentioned formation; Upper deck of bridge is a motorway, and load is bigger, and local effect is obvious, therefore, arranges the thick steel fiber reinforced concrete slabs of 20cm on above-mentioned panel grider, connects by WELDING STUDS, forms combining structure.
Ferris wheel in clad steel truss of the present invention-ferris wheel combined bridge, its apex height is 119.8m, wheel disc 31 diameters are 110m.Herringbone supporting tower frame 20 supportings (promptly this herringbone supporting tower frame comprises king-post and two tower legs) that ferris wheel is 67m by two height, tower top connects by crossbeam 23, form the portal-rigid frames stress system, this supporting tower frame crossbeam 23 is simultaneously also as the central rotating shaft of ferris wheel; The suitable bridge in edge, tower leg axis is to spacing 101.200m, along direction across bridge spacing 40.500m; The trident intersection point of tower leg and king-post is 120.Three limb members of tower leg and king-post are in the inclined spaces plane of same and upright plane angle 9.624.The supporting tower frame crossbeam 23 on king-post top (being the central rotating shaft of ferris wheel) is along the direction across bridge horizontal positioned, the king-post top on the absolute altitude at alignment of shafts place, center distance 21m.Two large-size pivoting support center distance 14m of supporting ferris wheel.
The wheel disc 31 of ferris wheel be provided with altogether 48 radially rope and 16 undercuts and establish steadying line to rope on king-post top and tower leg bottom, to such an extent as to the whole pylon of king-post is played stabilization in the plane.For the outside horizontal thrust of balance tower leg, between four column foots, to prestressing force horizontal equilibrium rope is set, this horizontal rope is hidden in the horizontal beam of encorbelmenting in the bridge outside along suitable bridge.
Ferris wheel is provided with 48 cars altogether, every car staffing 8 people, and rotating speed is revolution 30 minutes.Ferris wheel is arranged aviation obstruction beacon in the car bracket end of wheel disc outmost turns, totally eight groups of aviation obstruction beacons, the symmetric arrangement uniformly-spaced along the wheel disc border.Each cab is provided with arrester (lightning rod).
Ferris wheel wheel disc 31 16 passes from the opening of upper layer bridge 11 middle parts, motorway passes through from the both sides of opening 16, the curved shape of traffic route. lower floor's bridge floor 12 is as a whole, the middle part is the platform district that attends on board of ferris wheel, both sides are pedestrian and non motorized vehicle gap bridge passage, and other parts are as the functional areas of arranging commercial space, control machine room etc.The drive unit of ferris wheel is placed between the levels of bridge.The control machine room of ferris wheel and other equipment are placed in lower floor bridge space, and electrical source of power and other electric cables are all introduced from lower floor's bridge.
The technical scheme that ferris wheel in clad steel truss of the present invention-ferris wheel combined bridge is separated with clad steel trussed bridge employing agent structure, that is: ferris wheel is not to be erected on the bridge floor of clad steel trussed bridge, but adopt the wheel abutment plinth that ferris wheel supporting basis and bridge foundation is combined into a combined type, therefore, the architectural image that had both kept the bridge top to have a ferris wheel, can eliminate the indefinite hidden danger of the wheel integrated existing structure stress of bridge construction again, thereby dwindle influencing each other between bridge and the ferris wheel; And can correspondingly reduce the bearing diameter of ferris wheel central rotating shaft, thus not only can reduce the risk of processing of ferris wheel bridge and assembling significantly, also reduced construction cost simultaneously.
Although top invention has been described in conjunction with figure; but the present invention is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; under the situation that does not break away from aim of the present invention, can also make a lot of distortion, these all belong within the protection of the present invention.
Claims (10)
1. clad steel truss-ferris wheel combined bridge comprises main bridge, supporting tower frame and ferris wheel, it is characterized in that:
Described main bridge adopts the structural shape of clad steel girder truss, and described main bridge is provided with the vertical main couple of twice at least, and described main couple adopts steel box section rod member; Adopt longitudinal and transverse beam to connect between the described main couple, the bridge floor between the uplink and downlink track of the upper layer bridge of described main bridge is provided with an opening; The basis of described main bridge is first basis;
Described supporting tower frame is two people's Zee bar steel Z structure towers, and everyone is made of three straight line shaped steel casings that are mutually 120 degree by the Zee bar steel Z structure tower; The basis of described two people's Zee bar steel Z structure towers is second basis, and the top of described two people's Zee bar steel Z structure towers is connected with the supporting tower frame crossbeam;
Described first basis and second basis are combined type wheel abutment plinth;
Described ferris wheel comprises the car on wheel disc, central rotating shaft and the wheel disc periphery, and described wheel disc is arranged in the opening of above-mentioned upper layer bridge bridge floor; Described central rotating shaft and described supporting tower frame crossbeam are same member.
2. clad steel truss according to claim 1-ferris wheel combined bridge is characterized in that: the upper layer bridge of described main bridge adopts the steel fiber reinforced concrete bridge floor plate, and lower floor's bridge of described main bridge adopts steel bridge deck.
3. clad steel truss according to claim 1-ferris wheel combined bridge is characterized in that: the web member of described main couple adopts the V-shape diagonal web member.
4. clad steel truss according to claim 1-ferris wheel combined bridge is characterized in that: described main couple adopts full welding, bolt to connect or riveted joint.
5. clad steel truss according to claim 1-ferris wheel combined bridge is characterized in that: what lower floor's bridge of described main bridge was provided with ferris wheel steps on the cabin platform.
6. clad steel truss according to claim 1-ferris wheel combined bridge is characterized in that: described ferris wheel wheel disc is all steel Cable Structure, truss cable wire hybrid architecture or full trussed construction.
7. clad steel truss according to claim 6-ferris wheel combined bridge is characterized in that: described all steel Cable Structure wheel disc is made of the radial drag-line of full flexibility and the steel pipe truss rim of erect on the central river surface of main bridge.
8. clad steel truss according to claim 1-ferris wheel combined bridge is characterized in that: 48 cars of the car on the described ferris wheel wheel disc periphery for hanging along branches such as this wheel disc peripheries.
9. clad steel truss according to claim 1-ferris wheel combined bridge is characterized in that: described car adopts gravity ferris wheel car or view ferris wheel car.
10. clad steel truss according to claim 9-ferris wheel combined bridge is characterized in that: described gravity ferris wheel car adopts servomotor control.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2009100687889A CN101555679A (en) | 2009-05-11 | 2009-05-11 | Dual-layer steel truss-Ferris wheel combined bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2009100687889A CN101555679A (en) | 2009-05-11 | 2009-05-11 | Dual-layer steel truss-Ferris wheel combined bridge |
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| CN101555679A true CN101555679A (en) | 2009-10-14 |
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| CNA2009100687889A Pending CN101555679A (en) | 2009-05-11 | 2009-05-11 | Dual-layer steel truss-Ferris wheel combined bridge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912686A (en) * | 2010-07-31 | 2010-12-15 | 中山市金马科技娱乐设备有限公司 | Ferris wheel |
| CN106894340A (en) * | 2015-12-18 | 2017-06-27 | 中建六局土木工程有限公司 | Bridge unification construction method of installation is taken turns at a kind of estuary |
| CN111701248A (en) * | 2014-07-09 | 2020-09-25 | H·迈尔 | Inhabitable supporting structure for viewing ferris wheel |
-
2009
- 2009-05-11 CN CNA2009100687889A patent/CN101555679A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912686A (en) * | 2010-07-31 | 2010-12-15 | 中山市金马科技娱乐设备有限公司 | Ferris wheel |
| CN101912686B (en) * | 2010-07-31 | 2012-10-10 | 中山市金马科技娱乐设备有限公司 | Ferris wheel |
| CN111701248A (en) * | 2014-07-09 | 2020-09-25 | H·迈尔 | Inhabitable supporting structure for viewing ferris wheel |
| CN106894340A (en) * | 2015-12-18 | 2017-06-27 | 中建六局土木工程有限公司 | Bridge unification construction method of installation is taken turns at a kind of estuary |
| CN106894340B (en) * | 2015-12-18 | 2018-09-04 | 中建六局土木工程有限公司 | Wheel bridge unifies construction method of installation at a kind of estuary |
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Open date: 20091014 |