CN104452505A - Clockwise double-ring plane intersection designing scheme - Google Patents
Clockwise double-ring plane intersection designing scheme Download PDFInfo
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- CN104452505A CN104452505A CN201410611458.0A CN201410611458A CN104452505A CN 104452505 A CN104452505 A CN 104452505A CN 201410611458 A CN201410611458 A CN 201410611458A CN 104452505 A CN104452505 A CN 104452505A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C1/00—Design or layout of roads, e.g. for noise abatement, for gas absorption
- E01C1/02—Crossings, junctions or interconnections between roads on the same level
Abstract
The invention relates to a clockwise double-ring plane intersection designing scheme, particularly relates to a traffic organization design and a traffic control method for improving the traffic capacity of an intersection and reducing the delay of crossed roads, and belongs to the field of traffic designs and traffic control. Based on a conventional ring-shaped plane intersection, the characteristics of complex mingling and a long left-hand detouring distance of the conventional ring-shaped intersection are improved. By virtue of crossed lane-changing, cars on an entrance lane enter a roundabout clockwise to shorten the left-hand detouring distance; a ring lane is divided into inner and outer rings by virtue of physical separation and channelization measures, wherein the cars mainly enter from the inner ring, and the cars mainly exit from the outer ring; the two-phase signal control is combined to eliminate mingling and conflicting, so that the operation is relatively ordered, and the traffic capacity in the roundabout is improved, and therefore, the traffic capacity of the whole intersection is improved. According to the scheme, signal lamps are additionally arranged at the entrance and the exit of the roundabout, wherein two signal lamps are in charge of the entering cars, and two signal lamps are in charge of the exiting cars, and the two-phase signal control is adopted to realize the joint control on the signal lamps.
Description
Technical field
The present invention relates to a kind of traffic organization and the canalization method that improve Traffic Capacity at Intersections of Urban Roads, belong to traffic design and field of traffic control.
Background technology
Along with the development in city, urban road network density is increasing, and people to the demand of traffic also in continuous increase, urban road construction can not meet the demand of people, so seem particularly important to the organization and administration of road network.In city road network, the crossover node place bottleneck that traffic is current is often the main point causing traffic delay.According to statistics, in city road network, vehicle accounts for 30% of all times in the delay time at stop of crossing.Traffic due to crossing's all directions needs to produce a large amount of conflict such as interflow, shunting, intersection, make intersection become accident multiplely, the traffic accident on urban road has 60% to be occur in crossing.Therefore, how correct design, the traffic at tissue cross mouth place ensure urban traffic safety and unobstructed key.Traditional planar annular intersection belongs to the intersection controlling voluntarily to pass through, or continuously or wait for an opportunity the vehicle of craspedodrome and left-hand rotation that circuit intertexture track neutral enters intersection and all do to travel counterclockwise around central island, intersection is sailed out of after being interweaved, and right-turning vehicles Turning travel on dedicated Lanes on the right side of changing.Be suitable in bicycle interference few, adopt when the little city subsidiary road of the traffic volume is crossing with subsidiary road.Therefore, for traditional planar annular intersection, its traffic capacity is lower, and its suitable craspedodrome, left-hand rotation total wheel traffic are within 3000pcu/h.Balanced addressing this problem is carried out by analyzing, innovating, integrate the Traffic Organization proposing a kind of novel traffic circle.
Summary of the invention
This Traffic Organization is optimized on the basis of traditional endless intersection scheme, both improves intersection capacity, turn improves pedestrian's street crossing safety.Concrete design scheme follows following principle: (1) reduces intertwined point in rotary island.By the traffic volume of turnover rotary island is separated, intertwined point is fixed simultaneously, reduce the interweaving machine meeting in rotary island.The intertwined point of turnover rotary island is arranged at intersection, is namely conducive to the traffic volume controlling turnover in rotary island, meanwhile, adds the weaving length in rotary island.(2) two phase place green wave traffic.Tradition rotary island control mode is divided into two kinds: a kind of is self adaptation ring cross-channel mouth; One is lamp control formula traffic circle.Compared with traditional lamp control formula, this programme signal controls to adopt two phase place, and reduce cycle time, delay, this scheme is two phase place at Signalized control place, is easy to realize " green ripple " cooperation control.(3) street safety crossed by raising pedestrian and bicycle.Pedestrian crossing is combined with motorway signal lamp, arranges special pedestrian crossing signal lamp and improves safety, meanwhile, solves pedestrian and enters central island problem, make central island regain life according to canalization setting.Design scheme is changed in rotary island import and export intersection, makes wagon flow enter rotary island clockwise, reduces and turns left around ring distance; Physical separation is used in the traffic flow of turnover rotary island, decreases the intertexture of traffic flow; The intertwined point of turnover rotary island traffic flow is fixed, and adopts Two-phases signal to control, combine with pedestrian crossing, namely improve the traffic capacity in rotary island, turn improve pedestrian's street crossing safety.Meanwhile, " green ripple " traffic is utilized to reduce stop frequency and traffic delay.This scheme, compared with traditional traffic circle, had both solved pedestrian's street crossing safety problem, made central island regain life, greatly improved again the traffic capacity of intersection.
four, accompanying drawing explanation
Fig. 1: clockwise circular dicyclo level-crossing design scheme (type A); Fig. 2: type A traffic organization and phase diagram; Fig. 3: clockwise circular dicyclo level-crossing design scheme (type B); Fig. 4: type B traffic organization and phase diagram; Fig. 5: quadrangle dicyclo level-crossing design scheme (Type C) clockwise; Fig. 6: Type C traffic organization and phase diagram; Fig. 7: quadrangle dicyclo level-crossing design scheme (type D) clockwise; Fig. 8: type D traffic organization and phase diagram; Fig. 9: clockwise recessed quadrangle dicyclo level-crossing design scheme (type E); Figure 10: type E traffic organization and phase diagram.
five, detailed description of the invention
Be described in detail according to different design schemes below:
1, scheme traffic organization is analyzed: type A:scheme as shown in Figure 1, traditional " planar annular intersection " basis is improved, rotary island track in traditional sense is divided into inner ring track and outer shroud track, for each entrance driveway craspedodrome and turn left in advance by changing traffic organization, turn left to enter outer shroud, craspedodrome enters inner ring, travels clockwise around ring.The program is changed by intersection and is made wagon flow enter rotary island clockwise, by the inside and outside rotary island of physical separation segmentation, and intertwined point is fixed by signal lamp, greatly reduces the intertexture in rotary island, increase the traffic capacity in rotary island, improve the traffic capacity of whole intersection.Rotary island track misplaces by the program, and ensure the direct lane alignment of signal lamp place, avoid mistake of driving a vehicle, improve traffic safety, meet driving habits, rotary island inner ring track and outer shroud track proportioning were preferably in outer being greater than.The control form of former lamp control formula traffic circle is improved, sets up signal lamp at main road and rotary island place, and adopt Two-phases signal to control, Signalized control point in many places is carried out joint control, realizes green wave traffic, to reduce the delay of main road, improve the traffic capacity.As shown in Figure 2, first phase, during the green traffic light of north and south, rolls corresponding track away from after turning left to enter outer shroud to detailed phase distribution, keeps straight on after entering inner ring and rolls away from from East and West direction outer shroud, queue up, roll rotary island away to respective stretch when waiting East and West direction green light to subtend outer shroud track; East and West direction craspedodrome queuing vehicle rolls rotary island away to respective stretch.Second phase, during thing green traffic light and north-south roughly the same.Applicable elements: the program is applicable to the traffic circle that the traffic volume is comparatively large, category of intersection roads is higher.
type B:scheme as shown in Figure 3, traditional " planar annular intersection " basis is improved, rotary island track in traditional sense is divided into inner ring track and outer shroud track, for each entrance driveway craspedodrome and turn left in advance by changing traffic organization, turn left to enter outer shroud, craspedodrome enters inner ring, travels clockwise around ring.The program is changed by intersection and is made wagon flow enter rotary island clockwise, by the inside and outside rotary island of physical separation segmentation, and intertwined point is fixed by signal lamp, greatly reduces the intertexture in rotary island, increase the traffic capacity in rotary island, improve the traffic capacity of whole intersection.The program on the basis of type A, for ensureing that Signalized control point place direct lane misplaces by the positive circle of rotary island.The control form of former lamp control formula traffic circle is improved, sets up signal lamp at main road and rotary island place, and adopt Two-phases signal to control, Signalized control point in many places is carried out joint control, realizes green wave traffic, to reduce the delay of main road, improve the traffic capacity.As shown in Figure 4, first phase, during the green traffic light of north and south, rolls corresponding track away from after turning left to enter outer shroud to detailed phase distribution, keeps straight on after entering inner ring and rolls away from from East and West direction outer shroud, queue up, roll rotary island away to respective stretch when waiting East and West direction green light to subtend outer shroud track; East and West direction craspedodrome queuing vehicle rolls rotary island away to respective stretch.Second phase, during thing green traffic light and north-south roughly the same.Applicable elements: the program is applicable to the traffic circle that the traffic volume is comparatively large, category of intersection roads is higher.
type C:scheme as shown in Figure 5, traditional " planar annular intersection " basis is improved, rotary island track in traditional sense is divided into inner ring track and outer shroud track.For each entrance driveway craspedodrome and turn left in advance by changing traffic organization, turn left enter outer shroud, keep straight on enter inner ring, travel clockwise around ring.In shape, changed by traditional circular rotary island, be adjusted to quadrangle, quadrangle is conducive to changing shape according to topographic features, and the length of side can increase and can subtract, and when rotary island function is constant, applicable elements is more flexible, and application surface is wider.The program is changed by intersection and is made wagon flow enter rotary island clockwise, by the inside and outside rotary island of physical separation segmentation, and intertwined point is fixed by signal lamp, greatly reduces the intertexture in rotary island, increase the traffic capacity in rotary island, improve the traffic capacity of whole intersection.Rotary island track misplaces by the program, and ensure the direct lane alignment of signal lamp place, avoid mistake of driving a vehicle, improve traffic safety, meet driving habits, rotary island inner ring track and outer shroud track proportioning were preferably in outer being greater than.The control form of former lamp control formula traffic circle is improved, sets up signal lamp at main road and rotary island place, and adopt Two-phases signal to control, Signalized control point in many places is carried out joint control, realizes green wave traffic, to reduce the delay of main road, improve the traffic capacity.As shown in Figure 6, first phase, during the green traffic light of north and south, rolls corresponding track away from after turning left to enter outer shroud to detailed phase distribution, keeps straight on after entering inner ring and rolls away from from East and West direction outer shroud, queue up, roll rotary island away to respective stretch when waiting East and West direction green light to subtend outer shroud track; East and West direction craspedodrome queuing vehicle rolls rotary island away to respective stretch.Second phase, during thing green traffic light and north-south roughly the same.Applicable elements: the program is applicable to the intersection that the traffic volume is comparatively large, category of intersection roads is higher, orographic condition is limited.
type D:scheme as shown in Figure 7, traditional " planar annular intersection " basis is improved, rotary island track in traditional sense is divided into inner ring track and outer shroud track.For each entrance driveway craspedodrome and turn left in advance by changing traffic organization, turn left enter outer shroud, keep straight on enter inner ring, travel clockwise around ring.In shape, changed by traditional circular rotary island, be adjusted to quadrangle, quadrangle is conducive to changing shape according to topographic features, and the length of side can increase and can subtract, and when rotary island function is constant, applicable elements is more flexible, and application surface is wider.The program is changed by intersection and is made wagon flow enter rotary island clockwise, by the inside and outside rotary island of physical separation segmentation, and intertwined point is fixed by signal lamp, greatly reduces the intertexture in rotary island, increase the traffic capacity in rotary island, improve the traffic capacity of whole intersection.The program on the basis of Type C, for ensureing that Signalized control point place direct lane misplaces by the positive circle of rotary island.The control form of former lamp control formula traffic circle is improved, sets up signal lamp at main road and rotary island place, and adopt Two-phases signal to control, Signalized control point in many places is carried out joint control, realizes green wave traffic, to reduce the delay of main road, improve the traffic capacity.As shown in Figure 8, first phase, during the green traffic light of north and south, rolls corresponding track away from after turning left to enter outer shroud to detailed phase distribution, keeps straight on after entering inner ring and rolls away from from East and West direction outer shroud, queue up, roll rotary island away to respective stretch when waiting East and West direction green light to subtend outer shroud track; East and West direction craspedodrome queuing vehicle rolls rotary island away to respective stretch.Second phase, during thing green traffic light and north-south roughly the same.Applicable elements: the program is applicable to the intersection that the traffic volume is comparatively large, category of intersection roads is higher, orographic condition is limited.
type E:scheme as shown in Figure 9, traditional " planar annular intersection " basis is improved, rotary island track in traditional sense is divided into inner ring track and outer shroud track.For each entrance driveway craspedodrome and turn left in advance by changing traffic organization, turn left enter outer shroud, keep straight on enter inner ring, travel clockwise around ring.In shape, changed by traditional circular rotary island, be adjusted to recessed quadrangle, recessed quadrangle is conducive to changing shape according to topographic features, and the length of side can increase and can to subtract and floor space is little, and when rotary island function is constant, applicable elements is more flexible, and application surface is wider.The program is changed by intersection and is made wagon flow enter rotary island clockwise, by the inside and outside rotary island of physical separation segmentation, and intertwined point is fixed by signal lamp, greatly reduces the intertexture in rotary island, increase the traffic capacity in rotary island, improve the traffic capacity of whole intersection.The control form of former lamp control formula traffic circle is improved, sets up signal lamp at main road and rotary island place, and adopt Two-phases signal to control, Signalized control point in many places is carried out joint control, realizes green wave traffic, to reduce the delay of main road, improve the traffic capacity.As shown in Figure 10, first phase, during the green traffic light of north and south for detailed phase distribution, corresponding track is rolled away from after turning left to enter outer shroud, roll away from from East and West direction outer shroud after craspedodrome enters inner ring, queue up to subtend outer shroud track, roll rotary island when waiting East and West direction green light away to respective stretch; East and West direction craspedodrome queuing vehicle rolls rotary island away to respective stretch.Second phase, during thing green traffic light and north-south roughly the same.Applicable elements: the program is applicable to the intersection that the traffic volume is comparatively large, category of intersection roads is higher, orographic condition is limited.
2, geometry designs:rotary island radius of curvature will meet the requirement of circuit design speed, and concrete value is with reference to specification, and 0.5 times of rotary island design speed desirable section design speed, the general value of rotary island inside lane width is 4.0 ~ 5.0 meters.Rotary island weaving section length is according to rotary island design speed value, and concrete value is with reference to specification.
3, Signalized control:main road and rotary island change Dao Chu and set up signal lamp, and adopt Two-phases signal to control, and Signalized control point in many places is carried out joint control, realizes green wave traffic, reduce and incur loss through delay, and improve the traffic capacity.
4, pedestrian traffic tissue:pedestrian traffic tissue to enable pedestrian fast and safely pass through intersection.Arrange crosswalk in place, Neng Shiguo street distance is the shortest is conducive to pedestrains safety.Cross walk is positioned at rotary island and road intersection point of intersection, be combined with motorway signal lamp, special pedestrian crossing signal lamp is set and improves safety, because motorway is two phase place, pedestrian needs crossing street twice to pass through road, need arrange pedestrian secondary and cross canalization island, street, the program can increase pedestrian's street crossing chance and number of times, improves pedestrian's street crossing safety simultaneously.And by canalization setting position, cross walk is rationally set and makes rotary island periphery pedestrian enter central island, make central island regain life.
5, traffic safety facilities design:due to this scheme and traditional traffic circle different, affect driver custom, need to carry out detailed design to the design of the traffic safety facilities of intersection, traffic safety facilities direct drivers is correctly driven, ensures traffic safety.Such as, guiding and Warning Mark is used to pass on direction, track in advance; Speed(-)limit sign is used to ensure the comfortable and safe of driving; Use traffic prohibited sign, help driver and reduce error probability; Adjacent lane be subtend pass through time, guardrail is set and improves subtend traffic safety etc.
Claims (2)
1. one kind is improved Traffic Capacity of Round Crossing and reduces road intersection delay, Transcation agent and the traffic control method of street safety crossed by raising pedestrian and bicycle simultaneously, belong to traffic design and field of traffic control, the method is improved on traditional " planar annular intersection " basis, traditional rotary island is arbitrarily interweaved, turn left to evade around the characteristic of ring distance, entrance driveway wagon flow is made to enter rotary island clockwise by intersecting to change, use the inside and outside rotary island track of physical separation segmentation, and intertwined point is fixed by signal lamp, greatly reduce the intertexture in rotary island, increase the traffic capacity in rotary island, improve the traffic capacity of whole intersection, signal lamp is set up at road intersection and rotary island place, and adopt Two-phases signal to control, joint control will be carried out by Signalized control point everywhere, the traffic control form of scene 2 is entered in employing two, improve the rotary island traffic capacity.
2. according to intersection traffic organization design scheme according to claim 1, traditional traffic circle is it is characterized in that to improve, adopting intersection to change makes entrance driveway wagon flow enter rotary island clockwise, physical separation is adopted rotary island traffic flow to be separated, use intersection to change principle the intertwined point of rotary island is fixed, and use the turnover of the Signalized control rotary island traffic volume, greatly reduce the intertexture in rotary island, be applicable to the traffic circle of four tunnels and above intersection, the radius of rotary island sets as the case may be, meet the requirement of circuit design speed, inner and outer ring number of track-lines coupling can be arranged according to actual traffic stream ratio, signal timing dial combines with sidewalk, the joint control scheme of scene 2 is entered in easy employing two.
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| CN101251953A (en) * | 2008-04-03 | 2008-08-27 | 同济大学 | Unsymmetrical space-time optimizing control method for rotary intersection |
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| CN103413446A (en) * | 2013-07-29 | 2013-11-27 | 重庆交通大学 | Left-turn lane channelizing method and signal timing method |
| CN104328721A (en) * | 2014-09-23 | 2015-02-04 | 吴小平 | Design plan of quadrangle double ring plane cross-shaped intersection |
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2014
- 2014-11-04 CN CN201410611458.0A patent/CN104452505A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5795095A (en) * | 1997-10-29 | 1998-08-18 | Heller; Kenneth G. | Simultaneous left turn vehicular intersection |
| CN1766232A (en) * | 2005-11-21 | 2006-05-03 | 钱红波 | Novel traffic layout and control method for city road net and crossing |
| CN201050027Y (en) * | 2007-06-15 | 2008-04-23 | 李金才 | Crossroad unblocked cloverleaf junction |
| CN101251953A (en) * | 2008-04-03 | 2008-08-27 | 同济大学 | Unsymmetrical space-time optimizing control method for rotary intersection |
| CN101736663A (en) * | 2009-12-11 | 2010-06-16 | 电子科技大学 | Traffic diverging system for roundabout |
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| CN104328721A (en) * | 2014-09-23 | 2015-02-04 | 吴小平 | Design plan of quadrangle double ring plane cross-shaped intersection |
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Application publication date: 20150325 |