CN102206931A - Planar design and stereo design for safe and high-speed urban transportation without traffic lights - Google Patents

Abstract

The invention discloses a planar design and a stereo design for safe and high-speed urban transportations without traffic lights. The invention relates to the technical field of urban highway design and construction. The design is summarized in that: urban traffic congestions are resolved through removing traffic lights and separating crossroad central islands from intersections; for three-lane roads with traffic flow-rates less than 150 vehicles/km per minute, a planar design of central islands circumambulating is adopted; for three-lane roads with traffic flow-rates more than 150 vehicles/km per minute, a stereo design of an over-pass bridge is adopted; non-motors travel across the roads by the bridges or by under-crossings.

Description

Light-free safety high speed traveling traffic traffic plane, city and three-dimensional design

One, technical field:

Municipal highway design and construction

Two, background technology: change the existing mode that directs traffic with traffic lights in the crossroad, city, the cancellation traffic lights, the disk of crossroad, city is separated with the crossroad, and the motor vehicle carriage way is done plane and three-dimensional design by concrete road congested conditions and future development program.Bicycle and pedestrian's street crossing are from underground current.

Three, summary of the invention:

1, design philosophy and summary of the invention:

We think, it is the inevitable outcome of the numerous and rapid economic development of Chinese population that vehicle is on the increase, and is irreversible objective reality.Though world developed country automobile is many, population is few, and this has basic different with China.Quality of life and the social development that is having a strong impact on the people stopped up in the urban traffic congestion, if all vehicles can both be taken their own roads, do not need to wait for traffic lights, and Duo vehicle can not cause traffic congestion and obstruction yet again.To cause reason congested in traffic and that stop up be that vehicle intersects and travels, and for the vehicle of avoiding different directions collides, so need the traffic lights commander, formed also thus that vehicle is waited for traffic lights and the phenomenon of stopping, and this is a major reason congested in traffic and even obstruction.We think, solve the crowded and blockage problem of urban automobile, first, remove the traffic lights commander (traffic lights can at the less non-crossroad commander's pedestrian's street crossing of vehicle) of crossroad from, disk is separated with the crossroad.The second, vehicle travels in the same way (planar design) or carries out stereo staggered (three-dimensional design).Three, bicycle is from the underground street of crossing.This is the design's basic thought and summary of the invention.

2, the design's meaning:

China is in the high-speed developing period, and city vehicle is on the increase, and has effectively promoted national iron and steel, machine-building, developing of automobile industry, has driven economic growth.But also bring urban traffic to stop up, vehicle is crowded, the problem that oil consumption and toxic emission and traffic accident increase thereupon.And vehicle is many more, and urban road quickens to widen, and takies a large amount of soils and resource again.Though viaduct and subway can the splitter section vehicles, alleviate traffic pressure, can not solve surface car outside viaduct and the subway problem of blocking up.More whether the restriction vehicle driving way of way.The design removes traffic lights at the parting of the ways from, and the realization plane is designed with stereo staggered in the same way, dissolves traffic blocking problem, can reduce the time that restarts and travel in the motor vehicle way, greatly energy conservation and minimizing toxic emission.Because motor vehicle and bicycle are taken their own roads, the also generation that can cut down traffic accidents, thereby overcome the bottleneck that the restriction Modern Urban Development is subjected to the traffic restriction, be Modern Urban Development, especially build international metropolis and play a positive role, also with the more effectively economic development of industry such as propelling vehicle, iron and steel.

Four, description of drawings:

The design comprises that planar design, three dimensional designs and bicycle cross the street highway route design. Planar design is applicable to the area that vehicle is not many and financial resources are difficult; Three dimensional designs is applicable to that vehicle is more, the area that financial resources are relatively richer.

(1), planar design: (see Fig. 1, Fig. 2-schematic top plan view; Fig. 3---planar design Mathematical Modeling figure)

Fig. 1 is the vehicle pass-through design drawing of crossroad; Fig. 2 is the vehicle pass-through design drawing in T-shaped road junction.

Among Fig. 1, round turntable on the urban road is separated with the intersection, allow the vehicle of a certain relative direction (such as east-west direction) straight-through, the vehicle of another relative direction (such as North and South direction) then detours from the round turntable of outside, intersection, forming vehicle does not need to wait for traffic lights commander and directly current, thereby solves congested with cars and the congested in traffic problem that causes.

Among Fig. 2, the T-shaped road junction is current by diagram.

The pros and cons of this planar design and limitation:

A, this planar design input cost are extremely low, are applicable to the economic area of difficulty.

B, this planar design are applicable to that three lane flow amount per minutes are no more than 150/kilometer road, if vehicle is too many, then need to adopt three-dimensional design (the planar design Mathematical Modeling that sees below).

C, rotating disk then can be made specific design according to vehicle flowrate apart from the distance of intersection.

D, a part of vehicle detour with rotating disk, can make the driver feel inconvenient, but more driver does not directly pass through owing to do not need to wait traffic lights, for selecting voluntarily, the driver can select to be more suitable for the traffic route of oneself, thereby reduce the vehicle of detour section, increase the vehicle that directly passes through, alleviate the pressure of urban traffic.

Fig. 3 is the Mathematical Modeling of planar design, is described as follows:

1. planar design allows the vehicle limit passed through to measure:

(Speed limit of 48kmh 60 kilometers=60 minutes 60000 meters=per minute 1000 meters)

------turning crossing is the most concentrated highway section of vehicle (seeing Mathematical Modeling diagram A place)

Turning crossing vehicle the limit of intensive part set:

According to the speed limit regulation, every kilometer (1000 meters) the forward current limit in every track is that 100 cars of per minute (distance of front and back car is established 10 meters, contains this car vehicle body) calculate

Then 3 tracks are: 3*100=300;-----this is that the A place allows the limit passed through, is referred to as standard limit;

(whenever increase and expand a track, intensive place can hold 100 cars more and travel)

2. all directions all directions average vehicle flow limit is measured:

Because each A place has six tracks to send a car, A place standard limit is 300, and then every kilometer flow of every track per minute is the highest must not be above 50;

(whenever increase and expand a track, can hold more 50 cars enter travel)

3. the crossing condensed section each side flow rate calculation (is example with diagram ▲ A place) of sending a car of turning:

Enter the commentaries on classics of east, back by the position, south and enter compact district ▲ A place, 150 cars will be arranged;

Enter ▲ the A place by the position, west, 100 cars will be arranged;

Enter ▲ the A place by position, the north, 50 cars will be arranged;

Add up to 300.

Therefore, concerning planar design, each direction is sent a car and can be born within 50 every kilometer of the track per minutes.

4. calculate as can be known by this, pedestrian's street crossing passage and People's Bank of China's traffic lights can not be located at the place, crossroad, and should be located at outside compact district and the rotating disk.

If 5. actually come vehicle flowrate to surpass 300 in 3 tracks, compact district (being that all directions are come vehicle flowrate three tracks above 150), the method for solution is:

1, adopt the solid in this patent to design.

2, increase the track, track of every increase, compact district can hold 100 (being that unidirectional track can hold 50 more) vehicle ' more.

6. it should be noted that actual vehicle flowrate mensuration must be by the most crowded period mensuration in peak.

7. behind the actual motion, through after a while, vehicle can be sought the most straight-through as far as possible route voluntarily, reduces the probability through rotating disk, and this will alleviate the vehicle congested problem.

(2), three-dimensional design: (see Fig. 4---schematic top plan view; Fig. 5---solid figure that designs a model)

Three-dimensional design is to locate single relative direction----North and South direction (or east-west direction) at the parting of the ways to build double-deck up and down passage.Can be made as ground, half ground or partly following with cost as required.Fig. 4 and Fig. 5 are ground three-dimensional designs.The circuit of thick black-tape arrow is a stereo channel among Fig. 4, and the height of crossing the street stereo channel can be with reference to the height design of the existing pedestrian overcrossing in locality (Senior Three, four meters be advisable), and should be by existing grade separation viaduct design.Crossing street stereo channel side has the travel of bicycle.In east, intersection, the west outside is provided with rotating disk, the vehicle that vehicle turns northward and east is come that comes for the west turns northward and makes the usefulness that turns to.The rotation arrow in Fig. 4 turntable outside is a revetment, guarantees that the vehicle He Dong that turns to, the through vehicles that the west is come can travel simultaneously.

The design a model figure explanation of Fig. 5----solid:

Model and actual ratio: 1: 100

Model data (designing and producing) by three tracks:

The wide 2.8cm*6=16.8cm in track, ground;

Bridge floor height 4cm;

The long 13.8cm of upward slope access bridge, angle 15 degree; Descending access bridge 7cm, angle 30 degree.

Reference data during actual bridge construction:

Bridge floor height access bridge upward slope length access bridge upward slope angle

4m 13.8m 15 degree

4m 7m 30 degree

3m 10.8m 15 degree

3m 5.3m 30 degree

The pros and cons and the limitation of three-dimensional design:

A, three-dimensional design cost are higher relatively, but can once and for all solve the crowded and blockage problem of vehicle (do not get rid of overhead pedestrian crossing and the road surface needs repairing).

B, for special too high vehicle, only should limit accurate path link mistake in planar design.

(3), the underground passage of bicycle and pedestrian's street crossing design:

Fig. 6 is that the bicycle of right-angled intersection is crossed the street channels designs.The bicycle of Fig. 7 right and wrong intersection and the design of pedestrian passageway.

Among Fig. 6, fine dotted line is the bridge floor bicycle passage of three-dimensional overhead pedestrian crossing avris, and arrow is represented direct of travel, and is current for the bicycle that Nan Laibei goes and north comes south to go.The thick dashed line at center, crossroad is represented underground passage, for Nan Laixi go, that Dong Laixi goes (perhaps north comes that east is gone, Xi Laidong goes) bicycle to cross the street is current, mouthful is the underground passage entrance, arrow is represented direct of travel.South, the north are underground current for the bicycle that Dong Lainan goes and the west comes north to go to the thick dashed line in the outside, crossroad, and they are also current from the superolateral bicycle passage of three-dimensional overhead pedestrian crossing by behind the underground passage.Now, the used bicycle of the common people mainly has not been a bicycle, but electric motor car, electric motor car speed is fast, climbing capacity is stronger, and is current from underground passage, is fully passable, thereby can eliminate the potential safety hazard of motor vehicle and bicycle crisscross traffic on the road surface, it will be more efficient and convenient making bicycle current.

Among Fig. 7, what dotted line showed is the underground street passage of crossing of the bicycle outside the crossroad.Square shows the underground passage of pedestrian's street crossing.Pedestrian's street crossing also can adopt existing establishes traffic lights outside at the parting of the ways, and commander pedestrian crosses the street from ground, can save the cost input of building underground passage like this, and is also more convenient for the pedestrian.

Five, the specific embodiment;

I have produced 100: 1 physical model (see figure 5).

Concrete enforcement: by government investment, select some crossroads of small and medium-sized cities earlier, build motor vehicle and bicycle stereo channel, assemble a large amount of vehicle examinations then and pass through, promote earlier the crossroad of crowded obstruction at the metropolis vehicle after the success, and then gradually spread.Original traffic lights commander's mode can be still adopted in the place that can not carry out (too narrow as road, the crossroad is too little).

Claims (2)

1. cancellation crossroad traffic lights separate round turntable at the parting of the ways with the intersection, adopt the planar design among the design in the not too intensive city of vehicle; Adopt the solid among the design to design in the intersection of vehicle dense city.

2. bicycle adopts the underground street passage of crossing to pass through.

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