CN205368917U - City multilayer rotary island formula overpass - Google Patents

Abstract

The utility model discloses a city multilayer rotary island formula overpass, including multidirectional ground usual friendship lane, the top that is located ground usual friendship crossing position is equipped with the multilevel intersection rotary island, each layer grade separation rotary island is undertaken the multi -direction of same the relative wagon flow on the road respectively through the grade separation lane and is travel, but turns right grade separation lane and the ring road of connecting on every layer of grade separation rotary island to the vehicle free choice and travel, the inner ring and the rami centrales dagger of multilevel intersection rotary island are connected. Therefore, the utility model discloses make the each side realize to the wagon flow that zero -waiting, nothing are intersected, barrier free accessibility. Urban road's noncongestion has thoroughly been realized. The problem of traditional grade separation bridge design complicated, area big, the investment big, it is numerous to build cycle length etc is solved, the unable application of satisfying present urban traffic of tradition grade separation bridge.

Description

City multilayer loop island viaduct

Technical field

This utility model relates to a kind of urban transportation viaduct, specifically a kind of city multilayer loop island viaduct.

Background technology

At present, along with the continuous quickening of urbanization process, improving constantly of living standards of the people, a large amount of of motor vehicles especially private car (compact car) quickly increase, and the urban road traffic congestion problem thus brought becomes to perplex the great difficult problem of city management.Not only have a strong impact on civic normally to go on a journey, and badly influenced business meeting, medical aid, fire rescue, urgent responding etc., so that have impact on the development of society or even threatening the life of broad masses of the people, property safety.

The region that city is bustling, vehicle, pedestrian, the prosperous paving high concentration of business, be also often the region that traffic congestion is comparatively serious.If building conventional viaduct, making vehicle take their own roads, being subject to again the restriction of existing space, if expanding crossing region area to face again the reimbursement for expenses of highly difficult demolition work and great number.The through street of many urban construction, viaduct also block because of descending blocking up of crossing, and the substantial amounts of long-time idling of vehicle etc. stays in the crossing of each usual friendship, causes the waste of serious environmental pollution and the energy.In city, each level crossing becomes the intestinal obstruction of restriction urban transportation.It is short that research and development one neither expands space, existing crossing, small investment, construction period, and can guarantee that and each take their own roads to motor vehicles, non power driven vehicle, pedestrian, and existing level crossing transformed by non-interfering viaduct has become extension inevitable choice.

Summary of the invention

In view of above-mentioned condition, this utility model provides a kind of city multilayer loop island viaduct, makes all directions wagon flow achieve zero-waiting, without intersection, barrier free accessibility.Thoroughly achieve the unimpeded of urban road.

Technical solution of the present utility model is: a kind of city multilayer loop island viaduct, including usual friendship track, multidirectional ground, what be positioned at position, crossing, usual friendship track, ground is arranged over multilevel intersection rotary island, and the internal ring of described multilevel intersection rotary island is connected with central branches dagger；Described each layer of grade separation rotary island undertakes the multi-direction traveling of the relative wagon flow on the road of same direction respectively by grade separation track, right turn vehicle can connect the grade separation track on every layer of grade separation rotary island and ring road traveling by unrestricted choice, and the right turn ring road on wherein said top layer is connected along middle level grade separation track transition at an angle downwards by top layer grade separation rotary island both sides and imports to grade separation track, middle level.

Further, the internal ring of described multilevel intersection rotary island is connected or structural beams connection by hoist cable with central branches dagger.

Further, the shape of involved grade separation rotary island, according to the actual state at crossing, circular, oval, rhombus or polygon can be selected.

The beneficial effects of the utility model are:

1, small investment

In order to reduce investment outlay, can according to the different feature of the quantity of large, medium and small type vehicle, volume, weight and radius of turn, adopt vehicle big, middle-size and small-size separately, the design of branch up and down, the feature that available oversize vehicle quantity is few, oversize vehicle is made to travel according to the instruction of normal signal lamp with non power driven vehicle and pedestrian on usual friendship road surface, original ground, so it is greatly reduced load and the annular radius of rotary island, space requirement and the upper layer bridge depth of beam of bridge, thus significantly reducing the construction cost of bridge.

2, take their own roads, improve crossing traffic efficiency

Few (according to statistics: urban pavement oversize vehicle at ordinary times accounts for total vehicle fleet size less than 10% for oversize vehicle, peak period on and off duty is less than 1%), travel speed is slow, radius of turn is big feature, make oversize vehicle and bicycle and pedestrian at original level crossing, pass through according to the current mode of normal signal lights at ordinary times.Because vehicle fleet size decreases more than 90%, substantially increase the passage rate of pedestrian and vehicle, not only met custom that people's level jaywalks but also substantially increased safety and comfortableness.Therefore, make each rotary island layer track craspedodrome wagon flow, turn wagon flow and right-hand rotation wagon flow achieves zero-waiting, without intersecting, barrier free accessibility.Thoroughly achieve the unimpeded of urban road.

3, take up an area less, do not expand the floor space at original crossing

Little for medium and small vehicle turn radius, and the fast lane function of each layer rotary island is to be intended for minority to turn the feature that vehicle uses, therefore rotary island diameter is without too big, the more big lane length adding craspedodrome wagon flow on the contrary of rotary island diameter, not only increase bridge investment, also can extend craspedodrome wagon flow by the time, the upper space of former level crossing bicycle lane and footpath can meet the diametric requirements of Vehicle By-pass rotary island.Additionally the come in and go out track of each rotary island layer is all vertically set on the top in former level crossing track, to original level crossing area without any expansion.The high costs such as expropriation of land and removal will not be produced because building this bridge.

4, the duration is short, and construction does not need traffic to break off a friendship

Multilayer loop island viaduct can adopt modularity, segmentation plant construction, Assembling is quick, only need the foundation construction of supporting bridge post is done point-like traffic restriction, and this basic point is distributed on the cut-off rule between friendship track, Yuanping City, and adopt the way of construction of avoiding the peak hour night, the current of former track vehicle will not be stopped, do not need road to break off a friendship.Additionally by adequately and reasonably module design and assemble scheme, it may be achieved the time at a night just can install peak period next day before be delivered for use, will not because of the construction of bridge to the masses trip and periphery business management have much impact.

] 5, environmental protection, energy-conservation

When next common prefecture-level city main crossroads are because of the restriction of signal lights, having at least the vehicle of a road to pass through in idle several waits, peak period can reach hundreds！If according to idle several oil consumption 1 liter per hour of every chassis, peak, crossing block up often average 6 hours every days, etc. 100, vehicle to be released (unidirectional 50), remaining 18 hours wait vehicles amounts to peak quantity average out to calculating in 4 hours, every day is wasted fuel oil 1000 liters at one crossing, if according to every liter of oily average price be 6 yuan, the carbon dioxide that produces of annual 365 days, every liter gasoline be 2.4 kilograms of calculating, one crossing is every year because the idle number of vehicle waits that waste fuel oil is up to 36.5 ten thousand liters, it is roughly equal to RMB 2,190,000 yuan, discharges carbon dioxide 876 tons！This is only the result of calculation of the three common intersections in line city, does not also include vehicle because of the loss of brake frequently of blocking up, the produced oil consumption waste of starting and vehicle service life！

The whole nation has 4 municipalities directly under the Central Government, 30 provincial cities, 333 prefecture-level cities, 374 county-level cities, 2488 county towns, if the level crossing that need to transform is according to municipality directly under the Central Government 200,80, provincial city, prefecture-level city 50, county-level city 5, the calculating of 2, county town, the whole nation needs to install nearly 27000 of bridge.Fuel oil millions of tons can be saved every year, be equivalent to whole Nanjing petrochemical industry or the annual production of triumph sea oil！The up to ten million ton of reducing emission of carbon dioxide！

In addition, " the 2011 Beijing Communication development annual report " that Beijing middle forest assets assessment company limited issues according to Beijing Communication centre of research and development, the a assessment report made shows, traffic congestion allows Beijing lose 105,600,000,000 yuan year, is equivalent to the 7.5% of Beijing GDP.

Accompanying drawing explanation

Fig. 1 is overview of the present utility model；

Fig. 2 is usual friendship track, Fig. 1 ground schematic diagram；

Fig. 3 is island overpass track, Fig. 2 middle level schematic diagram；

Fig. 4 is Fig. 3 top layer island overpass track schematic diagram.

Detailed description of the invention

Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.

See a kind of city multilayer loop island viaduct shown in Fig. 1 to Fig. 4, the present embodiment gives on usual friendship track, ground 1, devises two-layer grade separation rotary island and corresponding grade separation track.Usual friendship track, ground 1 including cross-distribution, the travel conditions in this usual friendship track, ground 1 keeps existing oversize vehicle, the normal pass of non power driven vehicle and pedestrian, the top being positioned at position, crossing, usual friendship track 1, ground is respectively equipped with middle level and top layer grade separation rotary island 12 and 4, described middle level and top layer grade separation rotary island 12 undertake the craspedodrome of relative wagon flow on same path respectively with 4 by corresponding middle level and top layer grade separation track 3 with 5, turn right, turn left, turn around, wherein right-turning vehicles can connect right turn ring road 6 and 10 traveling on middle level and top layer grade separation rotary island 12 and 4 by unrestricted choice.Each layer of grade separation rotary island and grade separation track designed by the present embodiment are applicable to sailing into of medium and small vehicle.Right turn ring road 6 and 10 cross-distribution on middle level described in the utility model, top layer is in the both sides in middle level and top layer grade separation track 3 and 5.Described grade separation track, middle level 3 is formed by connecting by access bridge 2 and usual friendship track, ground 1；Top layer grade separation track 5 is formed by connecting with access bridge 2-1 after being connected with transition track, middle level 7 at an angle downwards.The both sides design being positioned at the transition track, middle level 7 of junction, top layer grade separation track 5 has the right turn ring road 6 in middle level.Right turn ring road 10 on top layer described in the utility model is connected along middle level grade separation track 3 transition at an angle downwards by top layer grade separation rotary island 4 both sides and imports to grade separation track, middle level 3.Be provided with central branches dagger 9 at level crossing 13 place in track, ground usual friendship described in this utility model 1, described central branches dagger 9 is connected with the internal ring in middle level and top layer grade separation rotary island 11 and 4 by hoist cable 8.Therefore, it is provided with the two-way craspedodrome of corresponding layer, tune, left steering grade separation track and right turn ring road with direction, usual friendship track, corresponding ground by the grade separation rotary island of each layer, ensure that the vehicle of different directions freely travels non-cross interference, all medium and small vehicles are made all to go up bridge around roundabout ahead in the flat peak period, the vehicle of different roads respectively enters the rotary island layer of different layers and detours and realize all directions traveling output, and all directions right turn vehicle can arbitrarily select the ring road barrier free accessibility of each layer rotary island.For the grade separation rotary island layer that left steering and major trunk roads wagon flow are bigger, original ground usual friendship track can be made full use of and only exercise the feature of oversize vehicle (negligible amounts), according to actual peak period, rotary island layer is adopted to limit the mode of left steering at times, make left steering vehicle current with oversize vehicle mixing according to signal lights instruction by the intersection in original ground usual friendship track, thus make each grade separation rotary island layer track craspedodrome wagon flow, turn wagon flow and right-hand rotation wagon flow achieves zero-waiting, without intersecting, barrier free accessibility.Thoroughly achieve the unimpeded of urban road.

In above-mentioned, adopt hoist cable 8 to be connected with the internal ring in middle level and top layer grade separation rotary island 11 and 4 except described central branches dagger 9 except, it is also possible to be that middle level and top layer grade separation rotary island 11 and 4 adopt structural beams to be directly connected with central branches dagger 9.

In above-mentioned, owing to there is certain angle and space between access bridge 2 and usual friendship track, ground 1, parking lot 12 can be provided with in this position and be made full use of.

Two-layer grade separation rotary island given by above-described embodiment, except adopting circle, also according to the actual state at crossing, can select oval, rhombus or polygon.

In above-described embodiment, giving two-layer rotary island formula grade separation track, in addition, if being designed to more than two-layer, can intersect superposition successively by design of the present utility model can realize.

In above-mentioned, the rotary island formula viaduct entirety described in the present embodiment adopts the modular girder steel frame structure being easy and fast to install combination.Equally, it is possible to adopt traditional bridge construction mode to build by design of the present utility model.

Claims (3)

1. a city multilayer loop island viaduct, including usual friendship track, multidirectional ground, what be positioned at position, crossing, usual friendship track, ground is arranged over multilevel intersection rotary island, and the internal ring of described multilevel intersection rotary island is connected with central branches dagger；It is characterized in that, described each layer of grade separation rotary island undertakes the multi-direction traveling of the relative wagon flow on the road of same direction respectively by grade separation track, right turn vehicle can connect the grade separation track on every layer of grade separation rotary island and ring road traveling by unrestricted choice, and the right turn ring road on wherein said top layer is connected along middle level grade separation track transition at an angle downwards by top layer grade separation rotary island both sides and imports to grade separation track, middle level.

2. city according to claim 1 multilayer loop island viaduct, is characterized in that, the internal ring of described multilevel intersection rotary island is connected or structural beams connection by hoist cable with central branches dagger.

3. city according to claim 1 multilayer loop island viaduct, is characterized in that, the shape of described grade separation rotary island, according to the actual state at crossing, can select circular, oval, rhombus or polygon.