CN202705840U - Improved clover-leaf interchange overpass - Google Patents

Improved clover-leaf interchange overpass Download PDF

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Publication number
CN202705840U
CN202705840U CN 201220350690 CN201220350690U CN202705840U CN 202705840 U CN202705840 U CN 202705840U CN 201220350690 CN201220350690 CN 201220350690 CN 201220350690 U CN201220350690 U CN 201220350690U CN 202705840 U CN202705840 U CN 202705840U
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China
Prior art keywords
west
north
south
east
communicated
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Expired - Fee Related
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CN 201220350690
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Chinese (zh)
Inventor
闫涛
陈宝海
高进科
张文哲
梁素引
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HEBEI PROVINCIAL COMMUNICATIONS PLANNING AND DESIGN INSTITUTE
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HEBEI PROVINCIAL COMMUNICATIONS PLANNING AND DESIGN INSTITUTE
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Priority to CN 201220350690 priority Critical patent/CN202705840U/en
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Publication of CN202705840U publication Critical patent/CN202705840U/en
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Abstract

The utility model relates to an improved clover-leaf interchange overpass which comprises two highways, sideways and loop ramps. The highways are split-level up and down and criss-crossed, a sideway is arranged on the right side of the two highways respectively and used for communicating with the two highways, a first sideway is communicated with the direction from south to east, a second sideway is communicated with the direction from east to north, a third sideway is communicated with the direction from north to west, and a fourth sideway is communicated with the direction from west to south. The loop ramps are arranged in a first quadrant, a second quadrant, a third quadrant and a fourth quadrant which are surrounded by the two highways according to requirements of the actual traffic flow, vehicles can drive by twining the loop ramps from north to east, from south to west, from east to south or from west to north. The improved clover-leaf interchange overpass is characterized by further comprising directional ramps according to requirements of the actual traffic flow, the directional ramps rounds the loop ramps, and vehicles can directly drive on the directional ramps from west to north, from north to east, from east to south or from south to west.

Description

A kind of modified cloverleaf interchange viaduct
Technical field
The utility model relates to traffic bridge field, in particular to a kind of modified cloverleaf interchange viaduct.
Background technology
At present, the domestic and international graded crossing path that adopts is of a great variety, nearly more than 70 plants, and each grade separation path has it self function, effect and applicability.When the ratio that carries out grade separation path scheme selects, if catch well each grade separation path characteristic and and actual conditions, organically combine such as traffic volume size, category of roads, road speed, near landform, atural object, environmental aspect, present status of land utilization and planning in the future, investment and benefit etc., just can comparatively fast and successfully select and satisfy technical requirements and economic and practical graded crossing pattern road.
Interchange viaduct mainly contains following three major types:
(1) three intersection interchange viaduct comprises trumpet type interchange viaduct and orthotype interchange viaduct.
(2) four intersection interchange viaducts comprise diamond inter change bridge, orthotype overpass bridge, clover-leaf Interchange bridge.The diamond inter change bridge is one of representative pattern of interchange, and its form is very simple, needn't spiral too much on ring road, and land area is little, does not also need the cross conformation thing, and construction costs is lower.But the traffic capacity of cross part is little, and charge station disperses to be located at four places, has increased overhead cost.In the orthotype overpass bridge, keep straight on to turn right and the vehicle that turns left travels along more smoothly roadway and special-purpose ring road, direction is clear and definite, and all road intersections all set up body to intersect.Direct lane is separately positioned on bottom and upper strata, and traffic route is short prompt, and the traffic capacity is very large, but graded crossing structure number and the number of plies are many, and construction costs is high, and floor space is large.The clover-leaf Interchange bridge is applicable to interconnecting between speedway, and its shape only is provided with a bridge crossing like cloverleaf, and left/right rotation has separately ring road to wagon flow, and profile is more clear, and sighting distance is good.But the vehicle that turns left must utilize the ring road that goes in ring to spiral, and the linear standard of going in ring can not be used De Taigao, interweaves so produce between two adjacent belt ring roads, become the narrow road on the capacity, and floor space is larger.
(3) interchange viaduct of racemosus intersection comprises circuitous type overpass bridge and ring-like overpass bridge.Circuitous type overpass bridge is a kind of form that prolongs the left turning vehicle line, is characterized in that vehicle need make a circulation to detour.Through vehicles all can pass through rapidly the intersection, and floor space is less, and it is about 20~25% to reduce land used than flat clover blade profile, but about the vehicle of turning all need the segment distance that travels that interweaves, and Speed Reduction, distance turns left to detour.Major road and secondary road intersect, and when major road are positioned at broad area, can select this kind of formula.Ring-like overpass bridge is made of the upper straddle type structure that belt at grade intersection adds trunk line.It can guarantee that the wagon flow of main line travels continuously.Its traffic capacity and speed are subject to the interweave restriction of section of circuit.
Along with the fast development of the super expressway of country, the traffic conditions of a lot of complexity has appearred.The magnitude of traffic flow such as some or both direction is very large, and the magnitude of traffic flow of other direction is less, and above-mentioned various types of overpass bridges all can't address this problem well.
The utility model content
In order to address the above problem, the utility model improves traditional clover-leaf Interchange bridge, has solved the problem of the complicated magnitude of traffic flow.
This modified cloverleaf interchange viaduct comprises:
Article two, the expressway that lower leaf intersects on;
Respectively there is a bypass that these two expressways are communicated with on the right side of these two expressways, i.e. bypass has been communicated with the direction by south east, article one, bypass has been communicated with the direction by north east, and bypass has been communicated with the direction by north west, and bypass has been communicated with the direction by west south;
According to the needs of actual traffic flow, in first, second, third or fourth quadrant that these two expressways surround, loop ramp is arranged, vehicle can drive towards east, drives towards the west from south, drives towards south from east or drive towards north from the west by this loop ramp coiling from north;
It is characterized in that, according to the needs of actual traffic flow, also comprise the directional ramp of walking around loop ramp, vehicle can directly drive towards north, drives towards east from north, drives towards south from east or drive towards the west from south by this directional ramp from the west.
Wherein, described loop ramp is one, two, three or four.
Wherein, described directional ramp is one, two, three or four.
Wherein, described expressway is that cross intersects or T-shaped intersects.
Figure of description
Fig. 1 has schematically shown traditional clover blade profile overpass bridge;
Fig. 2 has schematically shown modified cloverleaf interchange viaduct of the present utility model;
Fig. 3 has schematically shown an example of modified cloverleaf interchange viaduct of the present utility model.
The specific embodiment
Clover blade profile overpass bridge be both at home and abroad in urban district and suburb each to the traffic volume more scheme of employing in the larger situation all.Generally speaking, in four quadrants of intercommunication loop ramp is set, during by clover blade profile overpass bridge, through vehicles is according to former direction running, and the right-hand bend vehicle travels by the right side ring road.The left-hand bend vehicle must be kept straight on and be passed through overpass bridge, right-hand rotation enters the right side ring road and drives to cross way, the right side ring road of turning right again just can be finished the operation of left-hand bend, in other words, vehicle is wanted to turn left, must can finish through turning to just of two ring roads, so it is adapted to the little situation of the traffic volume.
In the very large situation of the magnitude of traffic flow, adopt traditional clover blade profile overpass bridge can bring garage slow, traffic congestion.The inventor improves traditional clover blade profile overpass bridge, and the quadrant that the magnitude of traffic flow is large changes directional ramp into, has formed improved clover blade profile overpass bridge, i.e. modified cloverleaf interchange viaduct.In particular, ordinary circumstance, as shown in Figure 1, traditional clover blade profile overpass bridge is the expressway of the right-angled intersection of two upper lower leafs, from this cross star the plane is divided into 4 quadrants, a loop ramp and the bypass that can turn right are all arranged in each quadrant.For example, if a car travels from south east in advance, the then directly bypass from turning right eastwards.In like manner, from north east, from north west, from west south, all can realize from the corresponding bypass of turning right.If the vehicle wish from north orientation east, from the south orientation west, northwards travel from east orientation south or from the west, as long as the right side loop ramp in respective quadrants travels.
But under some road conditions, the vehicle flowrate of certain direction is very large.Illustrate, the north and west all are the central cities, by the west northwards and vehicle flowrate from south to north and very large by the vehicle flowrate in south orientation west.Must be via the loop ramp of the North-East Bound west of could turning right by the vehicle in south orientation west, and by west vehicle northwards must via the southeast to the loop ramp north of could turning right, and when this vehicle is turned right into from south to north expressway, it is faced with from south to north and by the vehicle that travels in a large number in south orientation west, can seriously blocks the traffic.For this reason, the inventor has revised traditional clover blade profile overpass bridge, and the quadrant that the magnitude of traffic flow is large changes directional ramp into.Or describe with above-mentioned example, remove the southeast to loop ramp, repair one by west directional ramp northwards, its loop ramp of walking around North-East Bound extends connection expressway from south to north northwards, directly sail the north by west vehicle northwards into via this directional ramp like this, as shown in Figure 2, it has avoided the vehicle flowrate by the south orientation west, alleviate traffic pressure, avoided traffic congestion.
Fig. 2 has schematically shown modified cloverleaf interchange viaduct of the present utility model.In fact, according to the situation of the magnitude of traffic flow of actual geographic environment and all directions, can make various modifications to the utility model, it all will fall in the spiritual scope of the present utility model.That is, in above-mentioned example, according to actual needs, also can keep the southeast to loop ramp.Certainly, directional ramp is not only by the west northwards, and according to the characteristics of the magnitude of traffic flow of reality, also can be by north orientation east, build directional ramp by east orientation south or by the south orientation west, and this directional ramp also be not limited to one, also can be two, three or four.In addition, according to the needs of actual traffic flow, the loop ramp of modified cloverleaf interchange viaduct of the present utility model also can be one, two, three or four.
In addition, the utility model also is applicable to the situation that T-shaped intersects the expressway, as shown in Figure 3.For example, when by the west north to magnitude of traffic flow when very large, can directly build a directional ramp, to alleviating traffic pressure very important meaning is arranged.

Claims (5)

1. modified cloverleaf interchange viaduct, it comprises:
Article two, the expressway that lower leaf intersects on;
Respectively there is a bypass that these two expressways are communicated with on the right side of these two expressways, i.e. bypass has been communicated with the direction by south east, article one, bypass has been communicated with the direction by north east, and bypass has been communicated with the direction by north west, and bypass has been communicated with the direction by west south;
According to the needs of actual traffic flow, in first, second, third or fourth quadrant that these two expressways surround, loop ramp is arranged, vehicle can drive towards east, drives towards the west from south, drives towards south from east or drive towards north from the west by this loop ramp coiling from north;
It is characterized in that, according to the needs of actual traffic flow, also comprise the directional ramp of walking around described loop ramp, vehicle can directly drive towards north, drives towards east from north, drives towards south from east or drive towards the west from south by this directional ramp from the west.
2. according to claim 1 overpass bridge, wherein said loop ramp is one, two, three or four.
3. according to claim 1 and 2 overpass bridge, wherein said directional ramp is one, two, three or four.
4. according to claim 1 overpass bridge, wherein said expressway is that cross intersects.
5. according to claim 1 overpass bridge, wherein said expressway is that T-shaped intersects.
CN 201220350690 2012-07-19 2012-07-19 Improved clover-leaf interchange overpass Expired - Fee Related CN202705840U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220350690 CN202705840U (en) 2012-07-19 2012-07-19 Improved clover-leaf interchange overpass

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106567302A (en) * 2016-11-01 2017-04-19 安徽省交通规划设计研究总院股份有限公司 City-crossing highway and city road interchange ramp conversion interchange overpass
CN111088737A (en) * 2019-12-31 2020-05-01 中国公路工程咨询集团有限公司 Method and system for single-horn intercommunicating grade separation linear design

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106567302A (en) * 2016-11-01 2017-04-19 安徽省交通规划设计研究总院股份有限公司 City-crossing highway and city road interchange ramp conversion interchange overpass
CN111088737A (en) * 2019-12-31 2020-05-01 中国公路工程咨询集团有限公司 Method and system for single-horn intercommunicating grade separation linear design

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20130130

Termination date: 20200719