CN203080400U - Extra-large span suspension bridge with uniparted hyperboloid space cable net main cables - Google Patents
Extra-large span suspension bridge with uniparted hyperboloid space cable net main cables Download PDFInfo
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Abstract
The utility model provides an extra-large span suspension bridge with uniparted hyperboloid space cable net main cables. A straight line characteristic of a uniparted hyperboloid is used, a vertical parallel cable system of a traditional suspension bridge is improved, heavy centralized cables are changed into scattered space steel wire cables, a plurality of steel wire cables are arranged in a cross mode in space, cross nodes of the uniparted hyperboloid space cable net main cables are fixed to form a uniparted hyperboloid form space cable system, oval steel structure strengthening ring beams are arranged, hanging rods and reinforcing beams are installed, door type rigid central buckles are arranged, and the extra-large span suspension bridge with the uniparted hyperboloid space cable system is built. The extra-large span suspension bridge with the uniparted hyperboloid space cable net main cables has the advantages of being good in span ability, large in rigidity of space structures, high in contortion frequency ratio, good in wind resistant stability, and the like. The extra-large span suspension bridge with the uniparted hyperboloid space cable net main cables is capable of fundamentally solving the problem of wind resistant stability of large-span suspension bridges, and is applicable to construction of cross-sea island connection and construction of extra-large span strait suspension bridges with a length in a range from 3000m to 5000m.
Description
Technical field
The utility model belongs to field of civil engineering, relates to a kind of building technology of large-span suspension bridge, relates in particular to a kind of large span suspension bridge of hyperboloid of one sheet Spatial Cable host cable.
Background technology
Suspension bridge is the strongest bridge type of span ability in the world, and 1000 meters bridges with upper span all are suspension bridge basically.1998, Japan built up the alum straits suspension bridge of striding 1991 meters in footpath, world rankings first.2009, China built up west, the Zhoushan watchtower in ancient times door suspension bridge of striding 1650 meters in footpath, world rankings second.2010, expensive 11,700,000,000 dollars of Italian government plan, building main span directly is 3300 meters Messina straits suspension bridge, so that connect Italian continent and Sicanian traffic.Building the Qiongzhou Strait bridge is Chinese's dreams for many years, 2012, and expensive 1,400 hundred million RMB of Chinese Government's plan, building main span directly is about 3500 meters the combined large-span suspension bridge in Qiongzhou Strait, so that connect the traffic on China's Mainland and island, Hainan.At present, started one construction upsurge that connects the island bridge over strait in the world,,, need build the strait Bridge that 3000～5000m are striden the footpath for fear of building the huge deep-sea deep water foundation of cost in order to satisfy the steamer navigation requirement of 2 50 tons.
The modal cable arrangement form of suspension bridge is parallel cable system, promptly has two vertical parallel rope face systems that formed by main push-towing rope and suspension rod.Traditional vertical parallel cable system suspension bridge has the strong characteristics of vertical bearing capacity, can undertake the superstructure weight and the vehicular load of striding footpath 3000～5000m suspension bridge, but, because vertical parallel cable system lateral rigidity is poor, torsional rigidity is poor, can not satisfy the wind resisting stability requirement that 3000～5000m are striden straits, footpath suspension bridge greatly.
Along with improving constantly of suspension bridge bridge design and construction level, the footpath record of striding of modern suspension constantly refreshes, and the suspension bridge structure is softly changed day by day.The suspended span subject matter of bringing that increases substantially is the rapid decline of suspension bridge structure space rigidity, vertical parallel cable system suspension bridge is very responsive to the effect of wind load, the wind resistance problem becomes increasingly conspicuous, this makes wind-induced vibration more important to the large-span suspension bridge Influence on security, and influence the large-span suspension bridge wind the most key factor of performance of shaking is exactly wind resisting stability, it is the flutter stability of suspension bridge, improve wind resisting stability and can be an important topic in the large-span suspension bridge design, the structure flutter stability the wind effect has under become the key factor that influences the large-span suspension bridge construction.
Improving the large-span suspension bridge wind resisting stability can be improving suspension bridge structural system integral rigidity, with control suspension bridge structural vibration characteristic with to improve means such as section pneumatic performance be auxilliary.The rigidity of structure of large-span suspension bridge mainly comes from main push-towing rope, and the starting point that improves suspension bridge structural entity rigidity should be placed on to be increased on the rigidity of main push-towing rope space.Therefore,, connect the island suspension bridge, need the large span suspension bridge form of structure of the strong new spatial cable system of a kind of wind resisting stability badly for the large span of building 3000～5000m is over strait at bridge engineering circle.
The hyperboloid of one sheet and hyperbolic paraboloid are typical secondary ruled surfaces, its curved surface can be made of two family's straight lines, the secondary ruled surface has a significant application value architectural, usually constitute the skeleton of building with it, use the building that ruled surface is built, have excellent mechanical property, construction technology is simple, the straight-line prestressed steel wire of stretch-draw is comparatively convenient, and its facade is beautiful and firm in structure.Many bulk storage plants, concert hall, the roofing profile of sports palace building adopts hyperbolic paraboloid saddle-shaped exactly, by straight line stretch-draw prestressing force steel wire, reaches and strides the roof structure requirement for bearing capacity greatly.Utilize the straight burr of the hyperboloid of one sheet, the crosspoint of two family's straight lines is firmly linked together, will obtain a very lightly and very firm building, the profile that the huge cooling tower of power plant is commonly used is exactly the hyperboloid of one sheet, the rattan gaily decorated basket is also usually used hyperboloid of one sheet profile, and 600 meters high Guangzhou TV transmission tower " little rough waist " is exactly to utilize the straight burr principle of the hyperboloid of one sheet to build.
Use for reference the structure construction of Chinese Tibet Motuo Teng bridge, according to " stretching integral " large-span structure design concept, utilize the straight burr characteristic of the hyperboloid of one sheet, make up the Spatial Cable net, form the cable of space cable system of hyperboloid of one sheet form, the crossover node of fixed space rope net main push-towing rope, oval steel work reinforcing ring collar tie beam is set, improve the space rigidity of cable system, adopt gate-type steel work rigidity central authorities button, strengthen closing property of the lotus root effect of cable of space cable and stiff girder, suspension rod and stiff girder bridge deck are installed at last, build a kind of large span suspension bridge of hyperboloid of one sheet Spatial Cable host cable.
The utility model content
Technical problem: the utility model provides the large span suspension bridge of the hyperboloid of one sheet Spatial Cable host cable that a kind of structure space rigidity is big, span ability is strong, wind resisting stability is good.Straight burr characteristic according to the hyperboloid of one sheet, the vertical parallel cable system of reform traditional suspension bridge, change big and heavy concentrated cable the space steel wire cable of dispersion into, the space crossed layout of steel wire strand cable is so that build the large span straits suspension bridge of 3000～5000m.
Technical scheme: the large span suspension bridge of hyperboloid of one sheet Spatial Cable host cable of the present utility model, comprise a mesh space main push-towing rope, bridge tower, the steel ring tower head, suspension rod, put more energy into girder steel and anchorage, tube mesh space main push-towing rope is connected with the steel ring tower head as the main push-towing rope of suspension bridge, the steel ring tower head is arranged on the bridge tower top, the girder steel of putting more energy into is suspended in a below of mesh space main push-towing rope by suspension rod, tube mesh space main push-towing rope constitutes by several steel wire cables are space crossed, its steric configuration is the sealing bobbin shape rope net of hyperboloid of one sheet Spatial Cable vertical formation off the net, the steel wire cable of tube mesh space main push-towing rope passes the reserving hole on the steel ring tower head, and the two ends of tube mesh space main push-towing rope are anchored among the anchorage.Along suspension bridge the oval steel perimeter beam of multiple tracks is set in tube mesh space main push-towing rope vertically, the steel wire cable of tube mesh space main push-towing rope passes oval steel perimeter beam and fixedly connected with it, the upper end of suspension rod is fixed on the oval steel perimeter beam, and the suspension rod lower end is connected with the girder steel of putting more energy into.Be provided with several gate-type rigidity central authorities button at the suspension bridge zone line, gate-type rigidity central authorities detain end and are connected with the girder steel of putting more energy into, and the upper end is connected with oval steel perimeter beam.
The job practices of the large span suspension bridge of hyperboloid of one sheet Spatial Cable host cable of the present utility model may further comprise the steps:
The first step: excavation pit, construction bridges basis, bridge tower, steel ring tower head and the anchorage of construction suspension bridge;
Second step: after setting up drag cable and building interim construction cat road, according to hyperboloid of one sheet equation, measure accurately and setting-out, the space crossed layout of multiply cable, the steel wire cable of pull cylinder mesh space main push-towing rope passes the preformed hole of steel ring tower head, and the employing ground tackle is anchored in tube mesh space main push-towing rope among the anchorage, sets up a mesh space main push-towing rope, after carrying out the tight cable work and linear adjustment of cable of space cable, adopt the crosspoint of U type anchor clamps stationary magazine creel mesh space main push-towing rope;
The 3rd step: the oval steel perimeter beam transportation of ectonexine form of structure is put in place, oval steel perimeter beam is installed, adopt anchor clamps that tube mesh space main push-towing rope firmly is connected with oval steel perimeter beam, shaped steel is set in the inside of oval steel perimeter beam to be supported, form the lateral stiffness section, strengthen the space rigidity of tube mesh space main push-towing rope;
The 4th step: the upper end of suspension rod firmly is installed on the hanger of oval steel perimeter beam, lifts the girder steel of putting more energy into and put in place, the girder steel of putting more energy into is fixedly connected on the lower end of suspension rod;
The 5th step: at suspension bridge bridge zone line, gate-type rigidity central authorities button is installed, the lower end of gate-type rigidity central authorities button is connected with the girder steel of putting more energy into, the upper end is connected with oval steel perimeter beam, strengthen the collaborative work ability of the tube mesh space main push-towing rope and the girder steel of putting more energy into, improve wind resisting stability, railing and deck paving are installed at last, form the large span suspension bridge of hyperboloid of one sheet cable of space cable system, build the large span straits suspension bridge of 3000～5000m.
Along with the continuous increase of suspended span, the corner frequency and the torsional frequency of parallel cable system large-span suspension bridge are near each other, and large-span suspension bridge structure critical wind speed of flutter reduces.The torsional frequency of the critical wind speed of flutter of large-span suspension bridge and suspension cable bridge is relevant with the twist and warping frequency ratio, and employing cable of space cable system suspension bridge is to improve the flutter stability efficient ways the most of striding suspension bridge greatly.The structural entity rigidity of large-span suspension bridge is mainly derived from the cable system stiffness, parallel cable system suspension bridge is changed into hyperboloid of one sheet cable of space cable system suspension bridge, can increase substantially the lateral resisting rigidity and the torsional rigidity of large-span suspension bridge, can increase the torsional frequency and the torsional frequency ratio of large-span suspension bridge structure, improve the large-span suspension bridge flutter stability.Adopt gate-type steel work rigidity central authorities button, cable of space cable and stiff girder are linked together, the twisting vibration of stiff girder and the twisting vibration of cable of space cable system can be coupled together to a certain extent, the twisting vibration of cable of space cable and stiff girder can be coupled together to a certain extent with the side direction horizontal vibration, reach the purpose that improves large-span suspension bridge structure torsional rigidity and torsional frequency, strengthen the wind resisting stability energy of large-span suspension bridge.
The hyperboloid of one sheet is a kind of typical ruled surface, and its curved surface can be made of two family's straight lines, and ruled surface has a significant application value architectural, usually constitutes the skeleton of building with it.Hyperboloid of one sheet straight burr grid system exists many crossover nodes, is connected and fixed these crosspoints, can improve the globality of hyperboloid of one sheet cable of space cable structural system.Adopt hyperboloid of one sheet Spatial Cable host cable as the large-span suspension bridge weight cable, can improve the space structures rigidity of large-span suspension bridge, increase lateral resisting rigidity, torsional rigidity and the torsional frequency of suspension bridge structure, improve the large-span suspension bridge flutter stability.
In order to strengthen the space rigidity and the globality of cable of space cable system, in hyperboloid of one sheet cable of space cable system, dispose oval steel work reinforcing ring collar tie beam, oval steel work reinforcing ring collar tie beam adopts ectonexine assembling type steel structure ring beam to form, ectonexine steel ring beam adopts clamp, the outer shroud collar tie beam hangs the upper strata cable net, and interior ring beam hangs the lower net cable net.Oval steel work reinforcing ring collar tie beam structure is provided with hanger, can make things convenient for the installation of three-dimensional suspension rod, guarantees the common stressed work of stiff girder bridge deck and cable of space cable system.
The cable of space cable system profile of striding footpath hyperboloid of one sheet cable of space cable system suspension bridge greatly as smart as a new pin, face shaping such as little rough waist, hyperboloid of one sheet horizontal section is one group of ellipse, the hyperboloid of one sheet can be regarded as and is made of the series of parallel ellipse, middle waist location ellipse is the most tiny, and it is big that the two ends oval cross section becomes gradually.The equation of the side direction section of the hyperboloid of one sheet is a hyperbola, hyperboloid of one sheet cable of space cable system side is the curved surface rope net of the indent of symmetry, just as the wind cable, catch hold of oval steel work reinforcing ring collar tie beam to hauling mutually tightly, the cable of space cable system of hyperboloid of one sheet shape can provide the cable horizontal component, the huge wind action of opposing straits environment guarantees large-span suspension bridge structure lateral stability, improves the large-span suspension bridge wind loading rating.
In order to improve the large-span suspension bridge wind resisting stability, span centre zone at large-span suspension bridge, several steel work gate-type rigidity button is set, structural element such as cable of space cable, oval steel work ring beam and steel stiff girder are connected in one, can increase the large-span suspension bridge structural integrity, the twisting vibration of stiff girder and the twisting vibration of cable of space cable system can be coupled together to a certain extent, further improve the space torsional rigidity of suspension bridge structure.
The utility model is according to " stretching integral " large-span structure design concept, straight burr characteristic according to the hyperboloid of one sheet, the stressed needs of wind resisting stability according to large span straits suspension bridge, the vertical parallel cable system of reform traditional suspension bridge, with big and heavy concentrated cable, change the space steel wire cable of dispersion into, the space crossed layout of steel wire strand cable, form the netted suspended-cable structure system of cable of space cable of hyperboloid of one sheet form, fixed space cable crossover node, oval steel work reinforcing ring collar tie beam is set, portal frame rigidity central authorities are set to link and connects cable of space cable and stiff girder, increase the large-span suspension bridge structural integrity, improve the torsional rigidity and the lateral resisting rigidity of cable of space cable system suspension bridge, suspension rod and stiff girder bridge deck are installed, build a kind of large span suspension bridge of hyperboloid of one sheet Spatial Cable host cable, fundamentally solve large-span suspension bridge wind resisting stability problem, satisfy the technical requirements of the large span straits suspension bridge of building 3000～5000m.
Beneficial effect: the utility model compared with prior art has the following advantages:
Along with the development that connects island engineering construction upsurge over strait, the footpath of striding of straits suspension bridge constantly increases, and the suspension bridge structure is softly changed day by day, and structures under wind stability has become influences the key factor that large-span suspension bridge is built.
The utility model is according to " stretching integral " large-span structure design concept, utilize the straight burr characteristic of the hyperboloid of one sheet, the vertical parallel cable system of reform traditional suspension bridge, adopt hyperboloid of one sheet Spatial Cable host cable system, with big and heavy concentrated cable, change the space steel wire cable of dispersion into, the space crossed layout of steel wire strand cable, fixed space cable crossover node, form the netted suspended-cable structure system of cable of space cable of hyperboloid of one sheet form, build a kind of large span suspension bridge of hyperboloid of one sheet Spatial Cable host cable.
Compare with traditional vertical parallel cable system suspension bridge, the netted suspended-cable structure system of hyperboloid of one sheet cable of space cable has increased the space rigidity of large-span suspension bridge, the torsional rigidity and the lateral resisting rigidity of large-span suspension bridge have been improved, improved the torsional frequency of suspension bridge, increased the twist and warping frequency ratio of suspension bridge, the critical wind speed of flutter of large-span suspension bridge improves greatly, can fundamentally solve large-span suspension bridge wind resistance flutter stability problem.
In hyperboloid of one sheet cable of space cable system, every about 30～40 meters, oval steel work reinforcing ring collar tie beam together is set, has strengthened the space rigidity and the globality of hyperboloid of one sheet cable of space cable system suspension bridge, guarantee the collaborative work of each strand of cable of space cable system steel wire cable.Oval steel work reinforcing ring collar tie beam adopts ectonexine steel ring beam loop type, ectonexine steel ring beam clamp, and cycle beam hangs the upper strata cable net, and interior collar tie beam hangs the lower net cable net.Oval steel work reinforcing ring collar tie beam is set, can strengthens the torsional rigidity of cable of space cable system suspension bridge, improve the critical wind speed of flutter of large-span suspension bridge, improve cable of space cable system suspension bridge wind resisting stability energy.
Flat-shaped oval steel ring beam is set, help the suspension rod installation, at the span centre place of suspension bridge, flat-shaped oval steel ring beam section width is 3/4～4/5 bridge deck width, intilted suspension rod can be set hold stiff girder, help improving the large-span suspension bridge flutter stability; In the bridge tower position, flat-shaped oval steel ring beam section width is 2～3 times a bridge deck width, outward-dipping suspension rod can be set hold stiff girder, helps improving the anti-quiet wind performance of large-span suspension bridge.
The face shaping such as the little rough waist shape of hyperboloid of one sheet Spatial Cable host cable system suspension bridge, cable of space cable system side is the curved surface rope net of symmetrical indent, the Spatial Cable net of hyperboloid of one sheet shape is just as the wind cable, catch hold of oval steel work reinforcing ring collar tie beam to hauling mutually tightly, hyperboloid of one sheet cable of space cable system has bigger lateral resisting rigidity, Spatial Cable host's cable can provide the cable horizontal component, therefore, large-span suspension bridge has the quiet wind load ability of very big anti-side direction, the huge wind action in area, straits can be resisted, large-span suspension bridge structure lateral stability can be guaranteed.
At the zone line of large-span suspension bridge, several gate-type steel work rigidity central authorities button is set, strengthen closing property of the lotus root effect of cable of space cable and stiff girder, strengthen the collaborative work ability of cable of space cable and stiff girder, increase the large-span suspension bridge structural integrity.Gate-type rigidity central authorities button is set, the twisting vibration of stiff girder and the twisting vibration of cable of space cable system can be coupled together to a certain extent, the twisting vibration of cable of space cable and stiff girder is coupled together to a certain extent with the side direction horizontal vibration, improve large-span suspension bridge structure torsional rigidity, torsional frequency and twist and warping frequency ratio, increase the damping of large-span suspension bridge structure, change large-span suspension bridge structural vibration characteristic, improve critical wind speed of flutter, improve the large-span suspension bridge wind resisting stability.
Hyperboloid of one sheet cable of space cable system suspension bridge of the present utility model has advantages such as span ability is strong, structure space rigidity is big, wind resisting stability is good, can fundamentally solve large span suspension bridge wind resistance flutter stability problem, so that build the large span straits suspension bridge of 3000～5000m.
Description of drawings
Fig. 1 is the full-bridge schematic three dimensional views of the large span suspension bridge of the utility model hyperboloid of one sheet Spatial Cable host cable;
Fig. 2 is the bridge tower place schematic three dimensional views of the large span suspension bridge of the utility model hyperboloid of one sheet Spatial Cable host cable;
Fig. 3 is the Anchor Foundation schematic diagram of the large span suspension bridge of the utility model hyperboloid of one sheet Spatial Cable host cable;
Fig. 4 is the span centre generalized section of the large span suspension bridge of the utility model hyperboloid of one sheet Spatial Cable host cable;
Fig. 5 is 1/4 generalized section of the large span suspension bridge of the utility model hyperboloid of one sheet Spatial Cable host cable;
Fig. 6 is the configuration schematic diagram of hyperboloid of one sheet Spatial Cable net.
Have among the figure: tube mesh space main push-towing rope 1; Bridge tower 2; Steel ring tower head 3; Oval steel perimeter beam 4; Suspension rod 5; The girder steel 6 of putting more energy into; Gate-type rigidity central authorities button 7, anchorage 8.
The specific embodiment
Below in conjunction with Figure of description, the utility model done further specifying.
Embodiment 1:
The large span suspension bridge of hyperboloid of one sheet Spatial Cable host cable of the present utility model, comprise a mesh space main push-towing rope 1, bridge tower 2, steel ring tower head 3, oval steel perimeter beam 4, suspension rod 5, the girder steel 6 of putting more energy into, gate-type rigidity central authorities button 7 and anchorage 8, tube mesh space main push-towing rope 1 is to constitute by several steel wire cables are space crossed, its steric configuration is the sealing bobbin shape rope net of hyperboloid of one sheet Spatial Cable vertical formation off the net, tube mesh space main push-towing rope 1 main push-towing rope as the super large span suspension bridge, steel ring tower head 3 is the top of bridge tower 2 fixedly, the steel wire cable of tube mesh space main push-towing rope 1 passes the reserving hole on the steel ring tower head 3, be anchored among the anchorage 8, tube mesh space main push-towing rope 1 vertically is provided with the oval steel perimeter beam 4 of multiple tracks along suspension bridge, the upper end of suspension rod 5 is fixed on the oval steel perimeter beam 4, the girder steel 6 of putting more energy into is suspended in a below of mesh space main push-towing rope 1 by suspension rod 5 and oval steel perimeter beam 4, at the suspension bridge zone line several gate-type rigidity central authorities button 7 is set, the girder steel 6 of putting more energy into is fixed in button 7 lower ends in gate-type rigidity central authorities, the upper end is connected with oval steel perimeter beam 4, strengthens the structural integrity of the tube mesh space main push-towing rope 1 and the girder steel 6 of putting more energy into.
Embodiment 2:
The job practices of the large span suspension bridge of hyperboloid of one sheet Spatial Cable host cable of the present utility model may further comprise the steps:
The first step: base area quality shape, geomorphologic conditions and navigation requirement, carry out the bridge site of large span straits suspension bridge and select, excavation pit, bridge tower 2, steel ring tower head 3 and the anchorage 8 of large span straits suspension bridge are built in the construction bridges basis;
Second step: after setting up drag cable and building interim construction cat road, according to hyperboloid of one sheet equation, measure accurately and setting-out, the space crossed layout of multiply cable, the traction steel wire cable passes steel ring tower head 3 preformed holes, is anchored in anchorage 8 bases, sets up a mesh space main push-towing rope 1, after carrying out the tight cable work and linear adjustment of cable of space cable, the crosspoint of stationary magazine creel mesh space main push-towing rope 1;
The 3rd step: the oval steel perimeter beam 4 of transportation ectonexine form of structure puts in place, oval steel perimeter beam 4 is installed, adopt anchor clamps that tube mesh space main push-towing rope 1 firmly is connected with oval steel perimeter beam 4, shaped steel is set in the inside of oval steel perimeter beam 4 to be supported, form multiple tracks lateral stiffness section, strengthen the space rigidity of tube mesh space main push-towing rope 1;
The 4th step: the upper end of suspension rod 5 firmly is installed on the hanger of oval steel perimeter beam 4, lifts the girder steel 6 of putting more energy into and put in place, the girder steel 6 of putting more energy into is fixedly connected on the lower end of suspension rod 5;
The 5th step: at the large-span suspension bridge zone line, gate-type rigidity central authorities button 7 is installed, strengthen the collaborative work ability of the tube mesh space main push-towing rope 1 and the girder steel 6 of putting more energy into, improve wind resisting stability, railing and deck paving are installed at last, form the large span suspension bridge of hyperboloid of one sheet cable of space cable system, build the large span straits suspension bridge of 3000～5000m.
Embodiment 3:
Certain strait Bridge is a combined large span suspension bridge, main span directly is 3600m, bridge floor overall with 60m, the branch of suspension bridge is striden the footpath and is 1200m+3600m+1200m, the bridge floor both sides are unidirectional 3 tracks of highway part, the bridge floor mid portion is a twin track railway, in order to satisfy the wind resisting stability requirement, adopts the bridge type of the large span suspension bridge of hyperboloid of one sheet Spatial Cable host cable.Bridge tower is a door pillar formula bridge tower, and the bridge tower height is 420 meters, and bridge tower is a reinforced concrete composite structure, and king-post is 18 * 15 meters square-sections, and 5 road rigid beams are set in the king-post, and the bridge tower basis is the continuous underground wall structure of 2 circles.Anchorage adopts the Reinforced Concrete structure, and prismatic bodily form anchorage can make anchorage embed the soil body.The bridge tower structural top is provided with oval steel ring tower head, and steel ring tower head major axis dimension is 120 meters, and minor axis dimension is 60 meters.Main rope of suspension bridge adopts hyperboloid of one sheet cable of space cable system, the space crossed layout of steel wire cable, the steel wire cable of tube mesh space main push-towing rope passes the reserving hole on the steel ring tower head, be anchored among the anchorage, this bridge tube mesh space main push-towing rope is made up of 32 cables, adopts prefabricated parallel strand method (PPWS method) technology, adopts the φ 5.2mm high tensile steel wire of 1800MPa, tube mesh space main push-towing rope steel wire consumption is 32 * 61 strand * 127 thread, and every cables diameter is 45.8cm.Oval steel perimeter beam is to be made of a series of oval steel ring beams not of uniform size, the waist location ellipse is the most tiny in the middle of the bridge, and the two ends oval cross section becomes greatly gradually, and the oval steel ring beam length shaft size of waist location is 40 meters in the middle of the bridge, minor axis dimension is 20 meters.Two groups of compressor wire suspension rods about this bridge bridge floor is provided with, the suspension rod spacing is 30 meters, amounts to 2 * 120 suspension rods.Stiff girder adopts steel truss formula stiff girder, and the steel truss height is 12 meters.The zone line of suspension bridge is provided with 5 road rigidity central authorities and detains, and adopts steel work gate-type rigidity button form, further strengthens the globality of the tube mesh space main push-towing rope and the girder steel of putting more energy into.
The large span suspension bridge construction technological process of hyperboloid of one sheet Spatial Cable host cable of the present utility model is: the large-span suspension bridge addressing---bridge tower construction---anchorage construction---cable of space cable system construction---oval steel work reinforcing ring collar tie beam is installed---suspension rod is installed---lifting stiff girder---rigidity central authorities are installed to be buckled---deck paving etc.In the large span suspension bridge construction operation of hyperboloid of one sheet cable of space cable system, must be noted that and promptly grab thin each link that concrete construction technology main points are as follows:
(1) large-span suspension bridge addressing
Suspension bridge is the long-span bridge beam, should carry out the contrast of multiple-schemes analysis, carries out technical and economical analysis and research.The large-span suspension bridge bridge site is selected to take all factors into consideration aspect requirements such as the hydrology, landform, atural object, landforms and engineering geology, and the long-term planning requirement of navigation aspect should be considered in the navigation section.Bridge position shadow may be located at as far as possible that the river course is straight, main flow is stable, the riverbed can section by concentrated flow on, the suspension bridge bridge location should be chosen in narrower location, river course.Suspension bridge belongs to the long-span bridge beam, and bridge tower and anchorage position need good geological conditions, and the suspension bridge bridge should be located at that geological structure is single, and rock is stable, and basement rock buries more shallow, and soil layer is solid, the location that geology is good.Suspension bridge should not be located at bad locations such as tomography, landslide, solution cavity, salinized soil and mire, should avoid fault belt, and movable earthquake fault band is particularly arranged in the recent period.
Stride straits, footpath suspension bridge greatly and should make full use of marine island, can the segmentation bridge construction.Gorge over strait suspension bridge should adopt the suspension bridge of striding the footpath greatly as far as possible, satisfies the navigation channel demand for development, also avoids building in deep water simultaneously bridge pier as far as possible.The gorge over strait suspension bridge of hyperboloid of one sheet cable of space cable system should select the bridge two sides that solid basement rock place is arranged, so that adopt the compound anchorage of tunnel type, utilize Prestressed Rock Anchor, the anchored force of performance deep layer rock, reduce construction costs, guarantee that the cable anchoring is safe and reliable.
(2) bridge tower construction
The height of large-span suspension bridge bridge tower is usually more than 100 meters, belong to the tall and slender structure category, bridge tower is the important primary structure member of large-span suspension bridge, bearing vertical loads such as main push-towing rope weight, bridge deck weight and vehicular load, king-post must have powerful resistance to compression supporting capacity, and the king-post basis must be solid and reliable.Simultaneously, tall and big suspension bridge bridge tower is being born huge wind load and geological process power, therefore, should guarantee that the suspension bridge bridge tower has powerful side direction supporting capacity.
The common transversary form of suspension bridge bridge tower is firm structure formula, truss-like and form such as hybrid, and just structure formula profile is lucid and lively succinct, easy construction, and just structure formula bridge tower is fit to 1500 meters and has striden the following suspension bridge bridges in footpath; The truss-like bridge tower has bigger anti-horizontal loading ability, but cross support brace constructional difficulties, the truss-like bridge tower is fit to 2000 meters and strides the above suspension bridge bridge in footpath.Suspension bridge bridge tower vertical structure form is common I font, A font and form such as chevron shaped, and I font bridge tower form is simple, and easy construction is fit to stride the single span suspension bridge bridge of footpath below 2000 meters; A font and chevron shaped bridge tower longitudinal rigidity are big, and still, its constructional difficulties is fit to the middle tower of multispan multitower suspension bridge or strides the single span suspension bridge bridge tower of footpath more than 3000 meters.
It is big that suspension bridge bridge tower constructional materials classification has concrete structure, steel work and combining structure form, concrete towers rod structure to have a resistance to compression bearing capacity, easy construction, advantage such as cost is low and maintenance cost is low, but the construction period is long.In recent years, adopted the job practices of slip form concreting, the construction of concrete tower post becomes very convenient.The steel structure tower rod structure has that speed of application is fast, batch production is made in advance and characteristics such as the cross support construction is simple, but cost is higher.
The suspension bridge of hyperboloid of one sheet cable of space cable system, the large span straits suspension bridge that is fit to 3000～5000m, the above tower height of bridge floor is striden the footpath according to 1/9～1/11 and is calculated, and should be 280～500 meters, add 80～90 meters of the following headways of bridge floor, the bridge tower height overall is about 360～580 meters.Therefore, the straits suspension bridge bridge tower engineering quantity of hyperboloid of one sheet cable of space cable system is huge, the bridge tower structure stress is huge, the transversary form of suggestion adopts the truss-like bridge tower, the vertical structure form adopts A font or chevron shaped bridge tower, position, middle and lower part body of the tower adopts concrete-shaped steel combining structure to build, and the top bridge tower adopts steel work to build.
Large span straits suspension bridge adopts the netted cable system of hyperboloid of one sheet Spatial Cable, can strengthen the wind resisting stability of large-span suspension bridge, hyperboloid of one sheet cable of space cable system cross section presents the oval cross section form, therefore, the bridge tower top is provided with the oval steel perimeter beam of huge flat, supports hyperboloid of one sheet cable of space cable system.Because hyperboloid of one sheet cable of space cable system is at the oval cross section width of the bridge tower position width greater than bridge deck, the top of striding straits, footpath suspension bridge bridge tower greatly of hyperboloid of one sheet cable of space cable system can be provided with the oval steel perimeter beam form of structure of huge flat that has outer cantilevered fashion, bridge tower top profile is just as the encorbelment electric power pylon of form of band, oval steel perimeter beam of huge flat and bridge tower king-post firm welding.In the oval steel perimeter beam of huge flat the shaped steel braced structures is set, guarantees the safety of the oval steel perimeter beam structure stress of flat, and pre-buried type is set turns to hollow steel pipe, substitute traditional saddle, so that realize that cable turns at the bridge tower place.The bridge tower of hyperboloid of one sheet cable of space cable system large-span suspension bridge should adopt four-column type A font bridge tower, adopts huge crossbeam to be connected with bearing diagonal between four posts.
(3) anchorage construction
Anchorage is the important composition member of suspension bridge, plays a part the anchoring main push-towing rope, and it passes to ground with the pulling force in the main push-towing rope, and the common form of suspension bridge anchorage is gravity anchor and tunnel-type anchorage.The vertical force component that gravity anchor relies on deadweight to resist main push-towing rope, the horizontal component of cable is then resisted by frictional resistance between anchorage and the ground or build-in force.Early stage suspension bridge gravity anchor adopts the steel frame anchor system more, and whole steel frame is cast in the anchor block concrete, and main cable strand is corresponding with the shaped steel pull bar, and this system's steel using amount is big, and construction is complicated.The steel frame anchor system is progressively substituted by the prestress anchoraging system, the prestress anchoraging system is made of presstressed reinforcing steel and cable thigh connector, and main cable strand links to each other with presstressed reinforcing steel by connector power is given to anchor block, and this system's steel using amount is few, flexible arrangement, easy construction.
When there is firm basement rock the suspension bridge two sides, can adopt tunnel-type anchorage, in basement rock, dig oblique tunnel, at tunnel bottom anchor ingot plate is set, clog one section wedge shape concrete cone as anchor block, can save engineering quantity greatly, reduce construction costs.
Hyperboloid of one sheet cable of space cable system suspension bridge generally is used for large span straits suspension bridge, and cable tension is huge, needs huge anchorage anchor-hold, need improve the anchorage system science of carrying out.Tunnel recombination formula anchorage system is adopted in suggestion, makes full use of anchorage rear end country rock, utilizes Prestressed Rock Anchor to transfer the anchored force of deep layer rock, the anchor block structure acting in conjunction together of Prestressed Rock Anchor and tunnel type cone shape.Compare with tunnel-type anchorage with traditional gravity anchor, the anchorage structure has been given full play to the axial rigidity of Prestressed Rock Anchor, Prestressed Rock Anchor anchoring deep layer rock has greatly increased anchored force, can guarantee the anchoring requirement of new-type hyperboloid of one sheet cable of space cable system suspension bridge cable.
(4) cable of space cable system construction
Main push-towing rope is the lifeline of suspension bridge, main push-towing rope is to be suspended on the king-tower and to be anchored in flexible supporting member in the anchorage at two ends by the cat head cable saddle, by cable folder and suspension rod and stiff girder to binding, main push-towing rope bears stiff girder dead load, vehicle mobile load, temperature load and beam wind load, and suffered Load Transfer is arrived cat head.
---work such as---main push-towing rope sets up---cable that sets up cat road folder and suspension rod installation that the main working procedure that main rope of suspension bridge sets up is: set up dragline and drag cable.
The suspension bridge dragline set up that common employing seabed pulls method, float sets up methods such as method, free suspension method and helicopter handling, then, utilize dragline to adopt the system of pulling of the formula that moves in circles to set up drag cable, set up cat road track cable.
Suspension bridge cat road structural system is made up of cat road track cable, cat road surface layer, railing, horizontal overline bridge and cat road wind cable etc.Suspension bridge cat road is important aerial corridor and job platform, for the dilatory usefulness of setting up, measure, transferring rope, the tight cable of main push-towing rope, installation cord clip and hoist cable, main push-towing rope to twine silk and protected working of main push-towing rope steel wire strand.During the construction of suspension bridge, generally be provided with two cat roads.Each is required for a side main cable construction in each cat road, and cat road width generally is about about 4 meters.Be the integral rigidity in enhancing cat road, and satisfy current needs, the horizontal overline bridge in cat road in position is set, cat road, both sides is communicated with.Wind resisting stability and adjustment cat road surface layer shape for improving the cat road are provided with cat road wind resistance cable, and cat road wind resistance cable links to each other by drag-line with cat road track cable.
Suspension bridge sets up the main push-towing rope method aerial spin processes (AS method) and prefabricated parallel strand method (PPWS method), and it is comparatively advanced that wherein prefabricated parallel strand main push-towing rope sets up method, and its effect, quality, precision are all high.Prefabricated parallel strand method is the mounting method that the strand that the parallel high tensile steel wire that is prefabricated in the factory is formed is transported to the building site, 61,91,127 on the steel wire of the every Shu Hanyou diameter of prefabricated strand 5.2mm, and two ends build-in hot-cast anchor head, its profile is a regular hexagon.Utilize drag cable that tower is gone up in the traction of strand one by one, put into saddle and be connected with anchor pole.
The main cable strand traction method is divided into gantry type and pulls two kinds of device traction method and small rail car traction methods.Prefabricated main cable strand links to each other with the device that pulls on being installed on drag cable, it is reciprocating drag cable to be driven pull device to pass cat road door frame guide wheel group, cat head door frame guide wheel group, anchorage door frame guide wheel group by the drive unit folding and unfolding, the steel wire strand is drawn along cat road cylinder by root be taped against on the cat road.In the strand traction erection process, the at the uniform velocity traction of should trying one's best.
Main cable strand sets up its master operation: 1. thread traction is set up: utilize to pull facility and prefabricated thread is pulled by the cat road set up the anchor head anchoring temporarily; 2. strand promotes traversing and goes into saddle: traction is mentioned strand after finishing from roller, and traversing to the saddle top, goes into saddle after the shaping; 3. the adjustment of strand sag: carried out the adjustment of strand sag when evening, temperature was stablized, promptly the span centre absolute altitude of benchmark thread and the span centre relative elevation of non-benchmark thread are controlled adjustment, 4. the strand stretching force is adjusted, the formal anchoring of anchor head.
When the whole strands of main push-towing rope set up finish in place after, ensuing work is tight cable, its objective is in order to make main push-towing rope be compacted into circle, reaches the void content of designing requirement, so that the cord clip requirement satisfy to be installed.Tight cable work progress has just tight cable and formal tight two stages of cable.Carry out the operation of pretension cable at the night of temperature stabilization, utilize instruments such as jack that main push-towing rope is carried out preliminary full circle, every spacing 5m ties up with interim steel band.After the operation of pretension cable is finished,, utilize tight cable machine to carry out formal tight cable operation by lower (by span centre to the cat head) direction that hoists.Behind the tight cable of main push-towing rope, work such as the installation, stiff girder that just can carry out cord clip, hoist cable installed, main push-towing rope twines silk and main push-towing rope is anticorrosion.
What hyperboloid of one sheet cable of space cable system suspension bridge adopted is the cable of space cable system, and its cable construction precision requires higher.Can on traditional suspension bridge cable erection technology basis, suitably reform, realize hyperboloid of one sheet cable of space cable system erection construction.At first, in the centre-height position of bridge tower place hyperboloid of one sheet cable of space cable, along one cat road of long-span bridge beam Y setting, as interim construction shipping platform.Draw one by one wire rope to the cat road, adopt lifting means, boom hoist cable adopts ground tackle anchoring wire rope on bridge tower, the planar parallel steel wire rope group of formation cylindroid to the oval steel perimeter beam of the huge flat position of bridge tower.Then, tilted direction moves the wire rope position and ground tackle is anchored on the bridge tower, forms the space steel wire cable net of hyperboloid of one sheet shape, connects the crosspoint of wire rope space networks, and formation hyperboloid of one sheet Spatial Cable net is constructed temporarily and transported the cat road.When building transportation cat road, bridge tower is the splay interim cable of configurable multiple tracks behind, so that bridge tower structure stress balance.Utilize the interim construction transportation cat road of hyperboloid of one sheet space steel wire cable net, draw main cable strand one by one, pass the hollow steel pipe that turns to that bridge tower goes out, the space crossed layout of steel wire strand cable, form hyperboloid of one sheet cable of space cable net, after all the steel wire strand sets up and puts in place, with the tight cable of each main cable strand is circular cross-section, adopt U type clip to be connected and fixed the crosspoint of main push-towing rope space networks, form hyperboloid of one sheet cable of space cable system, oval steel work reinforcing ring collar tie beam is installed, cord clip is installed, suspension rod, the lifting stiff girder, the large span suspension bridge of formation hyperboloid of one sheet Spatial Cable host cable.
The ruled surface cable of space cable system profile of the hyperboloid of one sheet as smart as a new pin, face shaping such as little rough waist, hyperboloid of one sheet horizontal section is one group of ellipse, the hyperboloid of one sheet can be regarded as and is made of the series of parallel ellipse, middle waist location ellipse is the most tiny, the two ends oval cross section becomes greatly gradually, and the variable cross-section of hyperboloid of one sheet cable of space cable system arranges that the cable form is to help very much large-span suspension bridge structures under wind stability.The equation of the side direction section of the hyperboloid of one sheet is a hyperbola, hyperboloid of one sheet cable of space cable system side is the curved surface rope net of the indent of symmetry, just as the wind cable, catch hold of oval steel work reinforcing ring collar tie beam to hauling mutually tightly, the cable of space cable system of hyperboloid of one sheet shape can provide the cable horizontal component, the huge wind action of opposing straits environment guarantees large-span suspension bridge structure lateral stability, improves the large-span suspension bridge wind loading rating.
(5) oval steel work reinforcing ring collar tie beam is installed
In order to strengthen the space rigidity and the globality of hyperboloid of one sheet cable of space cable system suspension bridge, in order to ensure the collaborative work of each strand of cable of space cable system steel wire cable, in hyperboloid of one sheet cable of space cable system, every about 30～40 meters, oval steel work reinforcing ring collar tie beam should be set one, steel ring beam ring sectional dimension should adapt with hyperboloid of one sheet cable of space cable system section, and suspension rod one end is fixed on the steel work reinforcing ring collar tie beam, so that hang stiff girder.Oval steel work reinforcing ring collar tie beam should adopt ectonexine steel ring beam loop type, ectonexine steel ring beam clamp, cycle beam hangs the upper strata cable net, interior collar tie beam hangs the lower net cable net, oval steel work reinforcing ring collar tie beam is provided with direction should be vertical with space networks cable cross section, guarantees to transmit suspension rod power to the cable of space cable net.In oval steel work reinforcing ring collar tie beam inside, the steel work supporting rod is set, so that strengthen the rigidity of oval steel ring beam, reduce the stress of steel ring beam.
At the span centre place of suspension bridge, flat-shaped oval steel ring beam section width is preferably 3/4～4/5 bridge deck width, and in the bridge tower position, flat-shaped oval steel ring beam section width is preferably 2～3 times bridge deck width, and each oval cross section depth-width ratio is preferably about 1/2.Hyperboloid of one sheet cable of space cable system net is in the minimum point of span centre position, and the height that leaves the stiff girder bridge deck should be greater than 15 meters, so that satisfy the traffic headroom requirement on the bridge.At the suspension bridge zone line, intilted suspension rod is set holds stiff girder, help improving the large-span suspension bridge flutter stability; The bridge tower vicinity is provided with outward-dipping suspension rod and holds stiff girder, helps improving the anti-quiet wind performance of large-span suspension bridge.Flat-shaped oval steel ring beam is set, helps suspension rod and install, can strengthen the globality of cable of space cable system suspension bridge, improve the space rigidity of hyperboloid of one sheet cable of space cable system suspension bridge, improve cable of space cable system suspension bridge wind resisting stability energy.
(6) suspension rod is installed
The suspension rod of suspension bridge is with the stiff girder dead load and act on the member that mobile load on the stiff girder passes to main push-towing rope, and its upper end links to each other with cord clip, and the lower end links to each other with stiff girder.Suspension rod can be divided into traditional vertical suspension rod and oblique suspension rod according to its facade arrangement form, and tiltedly suspension rod has the truss role effect, increase vertical integral rigidity of suspension bridge, can reduce amount of deflection, improved the natural frequency of flexural vibrations, reduce the bridge up-down vibration and jolt, improve the driving comfort level.Tiltedly suspension rod has the relaxation effect, has increased the damping of structure, and is favourable to suspension bridge wind resistance antidetonation.But because the truss effect of oblique suspension rod, the suspension rod STRESS VARIATION amplitude that mobile load causes is bigger, and alternate stress can cause the fatigue of gusset material, and it is damaged to make that suspension rod occurs at root anchor cup place, and rainwater is invaded and caused the corrosion of suspension rod wire rope.
Hyperboloid of one sheet cable of space cable system suspension bridge is a kind of suspension bridge that is used for the large span strait Bridge, owing to himself characteristic, the suitable oblique suspension rod of three dimensions that adopts is arranged, the suitable oblique layout of vertical facade of bridge and cross section middle hanger, so that strengthen its space rigidity, improve the natural frequency of reversing of suspension bridge, improve wind resisting stability.The bridge floor broad of hyperboloid of one sheet cable of space cable system large-span suspension bridge should be at one suspension rod of bridge floor intermediate arrangement, and the intermediate isolating band is set.
(7) lifting stiff girder
The stiff girder pattern of striding suspension bridge greatly mainly contains two kinds of flat closed steel case beam pattern and steel truss patterns, the normal flat closed case beam pattern that adopts of European countries' suspension bridge, and the suspension bridge of the U.S., Japan and other countries is used the truss pattern always.The ventilative performance of truss-like stiff girder is good, and the rigidity of structure is big, and stiff girder can reach than higher torsional rigidity, so its critical wind speed of flutter is higher.The advantage of case beam pattern stiff girder is that cost is saved and better aesthetic effect, the wind loading rating of case beam type stiff girder is subjected to many effects limit, the flutter stability of case beam pattern suspension bridge should be noted the ratio of the pneumatic external form in stiff girder cross section and width and span etc. not as truss pattern stiff girder suspension bridge during design.
The box stiff girder suspension bridge of steel, span has compliance preferably at 1000～2000m, when span is bigger its wind resisting stability be should give cautiously.Truss-like stiff girder suspension bridge, its accommodation is the widest, and span has compliance preferably at 1500～5000m.
Improve the flutter performance of the suspension bridge that adopts the case beam pattern stiff girder of remaining silent, need improve the profile at two ends, stiff girder cross section, take to add measures such as tuyere,, reduce the whirlpool and take off, make the cross section trend streamlined to improve the fluidised form that air-flow streams.The center grooved of the box stiff girder of steel to be to increase ventilative property, and the pressure differential of the back bottom surface that reduces to put more energy into adopts the critical wind speed of flutter of the separate type case beam of center grooved will obtain certain raising, can increase the cost of bridge tower and substructure certainly like this.The measures such as deflector, suppression plate or spoiler, central steadying plate of arranging at the stiff girder section are streamed the flutter stability that fluidised form also can improve bridge so that change.
Hyperboloid of one sheet cable of space cable system suspension bridge is applicable to the large span straits suspension bridge of 3000～5000m, its stiff girder should adopt ventilative truss-like stiff girder, and should ventilation strip be set at cross section middle part, the pressure differential of the back bottom surface that reduces to put more energy into improves its critical wind speed of flutter.In order further to strengthen the wind resisting stability of hyperboloid of one sheet cable of space cable system suspension bridge, suggestion is provided with the reverse cable of carbon fiber and catches hold of truss-like stiff girder and hyperboloid of one sheet cable of space cable system, the reverse cable of carbon fiber is fastening truss stiff girder and oval steel work reinforcing ring collar tie beam firmly, and the reverse cable of carbon fiber is anchored in the bridge tower concrete.The mechanical type draw off gear of computer control is set, disturb the wind-induced vibration form of suspension bridge, when running into typhoon, at the reverse cable of windward side tension carbon fiber, leeward side loosens the reverse cable of carbon fiber, so that improve the wind resisting stability of hyperboloid of one sheet cable of space cable system suspension bridge.
(8) rigidity central authorities button and deck paving are installed
In order to strengthen the collaborative work ability of hyperboloid of one sheet cable of space cable system and stiff girder, in the span centre zone, portal frame type rigidity central authorities should be set to be buckled, the rigidity button links together stiff girder and oval steel work reinforcing ring collar tie beam, the twisting vibration of stiff girder and the twisting vibration of cable of space cable system can be coupled together to a certain extent, the twisting vibration of cable of space cable and stiff girder can be coupled together to a certain extent with the side direction horizontal vibration, so that improve the space rigidity of cable of space cable system suspension bridge, strengthen the wind resisting stability of large-span suspension bridge.
At the span centre place, mutual rigidly connected 2 oval steel work reinforcing ring collar tie beams that spacing is about 3～4 meters can be set, so that the rigidity central authorities of double portal frame type are set at the span centre place to be buckled, at the suspension bridge zone line, 100～120 meters at interval, several portal frame type rigidity is set buckles, in spanning 1/4 zone, 120～150 meters flexible cable claim-reductions of several spacing are set, further strengthen the space rigidity of cable of space cable system suspension bridge, improve the wind resisting stability of large span straits suspension bridge.
At last, bridge railing is installed, is carried out the bituminous concrete deck paving, improve deck drainage system, carry out bridge paint, coating decoration, organizing construction checks and accepts, and is open to traffic.
Claims (1)
1. the large span suspension bridge of a hyperboloid of one sheet Spatial Cable host cable, comprise a mesh space main push-towing rope (1), bridge tower (2), steel ring tower head (3), suspension rod (5), put more energy into girder steel (6) and anchorage (8), described tube mesh space main push-towing rope (1) is connected with steel ring tower head (3) as the main push-towing rope of suspension bridge, described steel ring tower head (3) is arranged on bridge tower (2) top, the described girder steel of putting more energy into (6) is suspended in a below of mesh space main push-towing rope (1) by suspension rod (5), it is characterized in that, described tube mesh space main push-towing rope (1) constitutes by several steel wire cables are space crossed, its steric configuration is the sealing bobbin shape rope net of hyperboloid of one sheet Spatial Cable vertical formation off the net, the steel wire cable of tube mesh space main push-towing rope (1) passes the reserving hole on the steel ring tower head (3), the two ends of tube mesh space main push-towing rope (1) are anchored among the anchorage (8), along suspension bridge the oval steel perimeter beam (4) of multiple tracks is set in tube mesh space main push-towing rope (1) vertically, the steel wire cable of tube mesh space main push-towing rope (1) passes oval steel perimeter beam (4) and fixedly connected with it, the upper end of suspension rod (5) is fixed on the oval steel perimeter beam (4), suspension rod (5) lower end is connected with the girder steel of putting more energy into (6), be provided with several gate-type rigidity central authorities' buttons (7) at the suspension bridge zone line, the central button of described gate-type rigidity (7) lower end is connected with the girder steel of putting more energy into (6), and the upper end is connected with oval steel perimeter beam (4).
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088750A (en) * | 2013-01-24 | 2013-05-08 | 东南大学 | Especial-big span suspension bridge of uniparted hyperboloid space rope net main cable and construction method thereof |
| CN104632246A (en) * | 2014-09-01 | 2015-05-20 | 北车建设工程有限责任公司 | Large-span underground structure |
| CN106012850A (en) * | 2016-06-14 | 2016-10-12 | 周连惠 | Method for building cross-sea bridges |
| GB2546779A (en) * | 2016-01-28 | 2017-08-02 | Michael Corney John | Suspension bridges SB1 |
| CN108179694A (en) * | 2018-02-07 | 2018-06-19 | 大连理工大学 | A kind of flexible support structure of the aerial express occupation bridge of suspension type |
| CN109945998A (en) * | 2019-03-27 | 2019-06-28 | 东南大学 | A kind of device based on frequency method measurement suspension bridge short steeve internal force |
| CN114045941A (en) * | 2021-11-16 | 2022-02-15 | 浙江精工钢结构集团有限公司 | Horn-shaped space curved surface node and manufacturing method thereof |
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2013
- 2013-01-24 CN CN 201320039114 patent/CN203080400U/en not_active Withdrawn - After Issue
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088750A (en) * | 2013-01-24 | 2013-05-08 | 东南大学 | Especial-big span suspension bridge of uniparted hyperboloid space rope net main cable and construction method thereof |
| CN104632246A (en) * | 2014-09-01 | 2015-05-20 | 北车建设工程有限责任公司 | Large-span underground structure |
| GB2546779A (en) * | 2016-01-28 | 2017-08-02 | Michael Corney John | Suspension bridges SB1 |
| GB2546779B (en) * | 2016-01-28 | 2018-03-28 | Michael Corney John | Suspension bridges |
| CN106012850A (en) * | 2016-06-14 | 2016-10-12 | 周连惠 | Method for building cross-sea bridges |
| CN108179694A (en) * | 2018-02-07 | 2018-06-19 | 大连理工大学 | A kind of flexible support structure of the aerial express occupation bridge of suspension type |
| CN109945998A (en) * | 2019-03-27 | 2019-06-28 | 东南大学 | A kind of device based on frequency method measurement suspension bridge short steeve internal force |
| CN109945998B (en) * | 2019-03-27 | 2020-09-18 | 东南大学 | Device for measuring internal force of short suspender of suspension bridge based on frequency method |
| CN114045941A (en) * | 2021-11-16 | 2022-02-15 | 浙江精工钢结构集团有限公司 | Horn-shaped space curved surface node and manufacturing method thereof |
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