CN104532703A - Design scheme of planar intersection of anisotropic loop road - Google Patents
Design scheme of planar intersection of anisotropic loop road Download PDFInfo
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- CN104532703A CN104532703A CN201410772029.1A CN201410772029A CN104532703A CN 104532703 A CN104532703 A CN 104532703A CN 201410772029 A CN201410772029 A CN 201410772029A CN 104532703 A CN104532703 A CN 104532703A
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Abstract
The invention relates to a traffic organization design and traffic control method which can be used for improving the traffic capacity of the intersection and reducing road delay, and belongs to the field of traffic design and traffic control. On a basis of a conventional circular planar intersection, the conventional circular intersection is improved aiming at the characteristics that the conventional circular intersection is complicated to interweave and the left-handed turning distance of the conventional circular intersection is long. The loop road is divided into internal and external loops by adopting physical separation and canalization measures. The internal loop is mainly used for incoming of vehicles and the external loop is mainly used for outgoing of the vehicles. The internal loop is a clockwise left-handed rotation rotary island and the left-handed turning distance is shortened. The external loop is an anticlockwise straight and right-handed turn lane and a straight and left-handed conflict point in the intersection is moved outside by crossed change lanes of a section of the road. Combined with two phase signal control, interweaving and conflict are eliminated, so that the traffic capacity in the rotary island is improved. According to the scheme, signal lamps are additionally arranged at an entrance and an exit of the rotary island and the crossed change lanes, two lamps arranged at the entrance and two lamps are arranged at the exit; and the signal lamps are jointly controlled by adopting the two phase signal control.
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 that circuit intertexture track neutral enters the craspedodrome of intersection and left-hand rotation and all do to travel counterclockwise around central island, sails out of intersection after being interweaved.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 direction flow of turnover rotary island is separated, utilize physical separation and canalization measure that circuit is divided into inside loop and outside loop, inner ring master enter, outer shroud master go out, and inner ring, for turning left rotary island clockwise, shortens left-hand rotation and to detour distance, outer shroud is keep straight on counterclockwise and right-turn lane, and adopt section to intersect to change and move outside the craspedodrome in intersection and left-hand rotation conflict point, intertwined point is fixed simultaneously, reduce the interweaving machine meeting in rotary island.(2) distance that detours in rotary island is shortened.The turn right distance that detours of traditional rotary island is 1/4th, and the distance that detours of keeping straight on is 1/2nd, and distance of turning left to detour is 3/4ths; This programme adopts incorgruous rotary island, it is counterclockwise for turning right, the distance that detours in rotary island is 1/4th, it is counterclockwise for keeping straight on, the distance that detours in rotary island is 1/4th, and turn left for clockwise, the distance that detours in rotary island is 1/4th, shorten the detour distance of traffic flow in rotary island, improve the traffic capacity of intersection.(3) 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, and controls in conjunction with the Two-phases signal of motor vehicle, reduces pedestrian's stand-by period.Design scheme is by being separated the traffic direction flow of turnover rotary island, utilize physical separation and canalization measure that circuit is divided into inside loop and outside loop, inner ring is the rotary island that turns left clockwise, shorten left-hand rotation to detour distance, outer shroud is keep straight on counterclockwise and right-turn lane, and adopts Two-phases signal to control, and combines 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, greatly improved again the traffic capacity of intersection.
four, accompanying drawing explanation
Fig. 1: incorgruous circular rotary island level-crossing design scheme (type A); Fig. 2: type A traffic organization and phase diagram; Fig. 3: incorgruous circular rotary island level-crossing design scheme (type B); Fig. 4: type B traffic organization and phase diagram; Fig. 5: incorgruous circular rotary island level-crossing design scheme (Type C); Fig. 6: Type C traffic organization and phase diagram; Fig. 7: incorgruous quadrangle rotary island level-crossing design scheme (type D); Fig. 8: type D traffic organization and phase diagram; Fig. 9: incorgruous quadrangle rotary island level-crossing design scheme (type E); Figure 10: type E traffic organization and phase diagram; Figure 11: incorgruous quadrangle rotary island level-crossing design scheme (type F); Figure 12: type F traffic organization and phase diagram; Figure 13: incorgruous quadrangle rotary island level-crossing design scheme (type G); Figure 14: type G traffic organization and phase diagram; Figure 15: incorgruous quadrangle rotary island level-crossing design scheme (type H); Figure 16: type H 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, by the traffic direction flow of turnover rotary island is separated, utilize physical separation and canalization measure that circuit is divided into inner and outer ring, inner ring master enter, outer shroud master go out, inner ring is the circuit that turns left clockwise, shorten left-hand rotation to detour distance, outer shroud is keep straight on counterclockwise and right-turn lane, and adopt section to intersect to change and move outside the craspedodrome in intersection and left-hand rotation conflict point, 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.The control form of former lamp control formula traffic circle is improved, at main road and rotary island place and intersect and change place's signalization lamp, and adopts Two-phases signal to control, Signalized control point in many places is carried out joint control, realize green wave traffic, to reduce the delay of main road, improve the traffic capacity.Detailed phase distribution as shown in Figure 2, first phase, left-hand rotation circuit travel, craspedodrome circuit is waited in line; Intersection is changed Dao Chu north-south and is sailed into, and East and West direction is rolled away from.Second phase, left-hand rotation circuit is waited in line, and craspedodrome circuit travels; The place's of changing East and West direction of intersecting is sailed into, and north-south is rolled away from.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, by the traffic direction flow of turnover rotary island is separated, utilize physical separation and canalization measure that circuit is divided into inner and outer ring, inner ring master enter, outer shroud master go out, inner ring is the circuit that turns left clockwise, shorten left-hand rotation to detour distance, outer shroud is keep straight on counterclockwise and right-turn lane, and adopt section to intersect to change and move outside the craspedodrome in intersection and left-hand rotation conflict point, 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.The program is on the basis of type A, and the circuit that inner ring turned left is connected, and makes inner ring left turn lane also can realize keeping straight on.The control form of former lamp control formula traffic circle is improved, at main road and rotary island place and intersect and change place's signalization lamp, and adopts Two-phases signal to control, Signalized control point in many places is carried out joint control, realize green wave traffic, to reduce the delay of main road, improve the traffic capacity.Detailed phase distribution as shown in Figure 4, first phase, left-hand rotation circuit travel, craspedodrome circuit is waited in line; Intersection is changed Dao Chu north-south and is sailed into, and East and West direction is rolled away from.Second phase, left-hand rotation circuit is waited in line, and craspedodrome circuit travels; The place's of changing East and West direction of intersecting is sailed into, and north-south is rolled away from.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, by the traffic direction flow of turnover rotary island is separated, physical separation and canalization measure is utilized circuit to be divided into inside and outside three rings, inner ring is the circuit that turns left clockwise, middle ring is circuit of keeping straight on counterclockwise, outer shroud changes for turning right counterclockwise, and adopt section to intersect to change and move outside the craspedodrome in intersection and left-hand rotation conflict point, 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.The control form of former lamp control formula traffic circle is improved, at main road and rotary island place and intersect and change place's signalization lamp, and adopts Two-phases signal to control, Signalized control point in many places is carried out joint control, realize green wave traffic, to reduce the delay of main road, improve the traffic capacity.Detailed phase distribution as shown in Figure 6, first phase, left-hand rotation circuit travel, craspedodrome circuit is waited in line; Intersection is changed Dao Chu north-south and is sailed into, and East and West direction is rolled away from.Second phase, left-hand rotation circuit is waited in line, and craspedodrome circuit travels; The place's of changing East and West direction of intersecting is sailed into, and north-south is rolled away from.Applicable elements: the program is applicable to the traffic circle that the traffic volume is comparatively large, category of intersection roads is higher.
type D:scheme as shown in Figure 7, traditional " planar annular intersection " basis is improved, by the traffic direction flow of turnover rotary island is separated, utilize physical separation and canalization measure that circuit is divided into inner and outer ring, inner ring master enter, outer shroud master go out, inner ring is the circuit that turns left clockwise, shorten left-hand rotation to detour distance, outer shroud is keep straight on counterclockwise and right-turn lane, and adopt section to intersect to change and move outside the craspedodrome in intersection and left-hand rotation conflict point, 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.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 control form of former lamp control formula traffic circle is improved, at main road and rotary island place and intersect and change place's signalization lamp, and adopts Two-phases signal to control, Signalized control point in many places is carried out joint control, realize green wave traffic, to reduce the delay of main road, improve the traffic capacity.Detailed phase distribution as shown in Figure 8, first phase, left-hand rotation circuit travel, craspedodrome circuit is waited in line; Intersection is changed Dao Chu north-south and is sailed into, and East and West direction is rolled away from.Second phase, left-hand rotation circuit is waited in line, and craspedodrome circuit travels; The place's of changing East and West direction of intersecting is sailed into, and north-south is rolled away from.Applicable elements: the program is applicable to the traffic circle that the traffic volume is comparatively large, category of intersection roads is higher.
type E:scheme as shown in Figure 9, traditional " planar annular intersection " basis is improved, by the traffic direction flow of turnover rotary island is separated, utilize physical separation and canalization measure that circuit is divided into inner and outer ring, inner ring master enter, outer shroud master go out, inner ring is the circuit that turns left clockwise, shorten left-hand rotation to detour distance, outer shroud is keep straight on counterclockwise and right-turn lane, and adopt section to intersect to change and move outside the craspedodrome in intersection and left-hand rotation conflict point, 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.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 on the basis of type D, and the circuit that inner ring turned left is connected, and makes inner ring left turn lane also can realize keeping straight on.The control form of former lamp control formula traffic circle is improved, at main road and rotary island place and intersect and change place's signalization lamp, and adopts Two-phases signal to control, Signalized control point in many places is carried out joint control, realize green wave traffic, to reduce the delay of main road, improve the traffic capacity.Detailed phase distribution as shown in Figure 10, first phase, left-hand rotation circuit travel, craspedodrome circuit is waited in line; Intersection is changed Dao Chu north-south and is sailed into, and East and West direction is rolled away from.Second phase, left-hand rotation circuit is waited in line, and craspedodrome circuit travels; The place's of changing East and West direction of intersecting is sailed into, and north-south is rolled away from.Applicable elements: the program is applicable to the traffic circle that the traffic volume is comparatively large, category of intersection roads is higher.
type F:scheme as shown in figure 11, traditional " planar annular intersection " basis is improved, by the traffic direction flow of turnover rotary island is separated, physical separation and canalization measure is utilized circuit to be divided into inside and outside three rings, inner ring is the circuit that turns left clockwise, middle ring is circuit of keeping straight on counterclockwise, outer shroud changes for turning right counterclockwise, and adopt section to intersect to change and move outside the craspedodrome in intersection and left-hand rotation conflict point, 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.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 control form of former lamp control formula traffic circle is improved, at main road and rotary island place and intersect and change place's signalization lamp, and adopts Two-phases signal to control, Signalized control point in many places is carried out joint control, realize green wave traffic, to reduce the delay of main road, improve the traffic capacity.Detailed phase distribution as shown in figure 12, first phase, left-hand rotation circuit travel, craspedodrome circuit is waited in line; Intersection is changed Dao Chu north-south and is sailed into, and East and West direction is rolled away from.Second phase, left-hand rotation circuit is waited in line, and craspedodrome circuit travels; The place's of changing East and West direction of intersecting is sailed into, and north-south is rolled away from.Applicable elements: the program is applicable to the traffic circle that the traffic volume is comparatively large, category of intersection roads is higher.
type G:scheme as shown in figure 13, traditional " planar annular intersection " basis is improved, by the traffic direction flow of turnover rotary island is separated, utilize physical separation and canalization measure that circuit is divided into inner and outer ring, inner ring master enter, outer shroud master go out, inner ring is the circuit that turns left clockwise, shorten left-hand rotation to detour distance, outer shroud is keep straight on counterclockwise and right-turn lane, and adopt section to intersect to change and move outside the craspedodrome in intersection and left-hand rotation conflict point, 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.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 control form of former lamp control formula traffic circle is improved, at main road and rotary island place and intersect and change place's signalization lamp, and adopts Two-phases signal to control, Signalized control point in many places is carried out joint control, realize green wave traffic, to reduce the delay of main road, improve the traffic capacity.Detailed phase distribution as shown in figure 14, first phase, left-hand rotation circuit travel, craspedodrome circuit is waited in line; Intersection is changed Dao Chu north-south and is sailed into, and East and West direction is rolled away from.Second phase, left-hand rotation circuit is waited in line, and craspedodrome circuit travels; The place's of changing East and West direction of intersecting is sailed into, and north-south is rolled away from.Applicable elements: the program is applicable to the traffic circle that the traffic volume is comparatively large, category of intersection roads is higher.
type H:scheme as shown in figure 15, traditional " planar annular intersection " basis is improved, by the traffic direction flow of turnover rotary island is separated, physical separation and canalization measure is utilized circuit to be divided into inside and outside three rings, inner ring is the circuit that turns left clockwise, middle ring is circuit of keeping straight on counterclockwise, outer shroud changes for turning right counterclockwise, and adopt section to intersect to change and move outside the craspedodrome in intersection and left-hand rotation conflict point, 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.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 control form of former lamp control formula traffic circle is improved, at main road and rotary island place and intersect and change place's signalization lamp, and adopts Two-phases signal to control, Signalized control point in many places is carried out joint control, realize green wave traffic, to reduce the delay of main road, improve the traffic capacity.Detailed phase distribution as shown in figure 16, first phase, left-hand rotation circuit travel, craspedodrome circuit is waited in line; Intersection is changed Dao Chu north-south and is sailed into, and East and West direction is rolled away from.Second phase, left-hand rotation circuit is waited in line, and craspedodrome circuit travels; The place's of changing East and West direction of intersecting is sailed into, and north-south is rolled away from.Applicable elements: the program is applicable to the traffic circle that the traffic volume is comparatively large, category of intersection roads is higher.
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 intersection and changes Dao Chu, 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, left turn traffic is made to enter inner ring circuit clockwise by intersecting to change, use the inside and outside rotary island track of physical separation segmentation, circuit is divided into inside loop and outside loop, inner ring master enter, outer shroud master go out, inner ring is the rotary island that turns left clockwise, shorten left-hand rotation to detour distance, outer shroud is keep straight on counterclockwise and right-turn lane, 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, improve the rotary island traffic capacity.
2. 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 left turn traffic 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.
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| CN110344294A (en) * | 2019-06-27 | 2019-10-18 | 湖北建科国际工程有限公司 | Ring-shaped intersection traffic structure |
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Application publication date: 20150422 |