CN104929007A - Alfalfa leaf type flyover crossing structure - Google Patents
Alfalfa leaf type flyover crossing structure Download PDFInfo
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- CN104929007A CN104929007A CN201410109949.5A CN201410109949A CN104929007A CN 104929007 A CN104929007 A CN 104929007A CN 201410109949 A CN201410109949 A CN 201410109949A CN 104929007 A CN104929007 A CN 104929007A
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- trunk road
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Abstract
The invention discloses an alfalfa leaf type flyover crossing structure which comprises a first main trunk road and a second main trunk road, wherein the first main trunk road and the second main trunk road cross. Turn-right ramps are arranged in four quadrants formed by the first main trunk road and the second main trunk road respectively. The alfalfa leaf type flyover crossing structure further comprises four turn-left ramps, and each turn-left ramp stretches over two adjacent quadrants. Each turn-left ramp comprises a turn-left circuitous section and a turn-left annular section; the entrance of each turn-left circuitous section is communicated with the corresponding turn-right ramp where left turning vehicles are driven away, and the exit of corresponding turn-left annular section is communicated with a target lane of the left turning vehicles; each turn-left circuitous section is located on the outer side of the turn-left annular section located in the same quadrant with the turn-left circuitous section. According to the alfalfa leaf type flyover crossing structure, collector-distributor lanes do not need to be arranged; no intersecting section exists between the entrance and the exit of each turn-left ramp, and the traffic capacity of the ramps and mainlines is improved; the alfalfa leaf type flyover crossing structure is slightly lower than an alfalfa leaf type flyover crossing structure provided with collector-distributor lanes in the aspects of land occupancy, building height and project building cost.
Description
Technical field
The present invention relates to highways and urban roads field of engineering technology, particularly relate to a kind of alfalfa leaf type grade separation structure.
Background technology
Common alfalfa leaf type grade separation is generally provided with four loop ramps, for the four-legs intersection that the flow that turns left is less.It has the advantages such as level is low, cost province; Due to annular left rotaring ring road first-in last-out, the spacing of entrance and outlet is shorter, causes and interweaves into main line and the vehicle that goes out main line, thus affect the traffic capacity of main line.
When ring road access spacing is comparatively near, ring road access vehicles passing in and out is larger to main line Coherent traffic noise, can collector be set, guarantees the quick, unimpeded of main line and safety.Collector generally adopts two-way traffic, should treat, arrange acceleration and deceleration track with the connection of main line according to access, correspondingly, virtually adds the cost of construction investment.
Summary of the invention
In view of this, the object of this invention is to provide a kind of alfalfa leaf type grade separation structure, arranged by roundabout alfalfa leaf type ring road, eliminate main line access in the past first-in last-out, the shortcoming of spacing deficiency, overcome and the collector full alfalfa leaf type graded crossing loop ramp shortcoming that intertexture phenomenon is serious is not first-in last-out set, also overcome the collector intertexture phenomenon of the full alfalfa leaf type ring road that collector is set, ensure quick, unimpeded, the safety of main line vehicle.
In order to achieve the above object, the object of the invention is to be achieved through the following technical solutions:
A kind of alfalfa leaf type grade separation structure, wherein, comprise the first crossing main trunk road and the second main trunk road, a right-hand rotation ring road is respectively equipped with in four quadrants formed between described first main trunk road and described second main trunk road, described alfalfa leaf type grade separation structure also comprises four left rotaring ring roads, and left rotaring ring road described in every bar is across two adjacent described quadrants; Described left rotaring ring road comprises turning left roundabout section and left-hand rotation ring segment, and the described right-hand rotation ring road that the entrance that described left-hand rotation is roundabout section and left turning vehicle sail out of track communicates, and the outlet of described left-hand rotation ring segment communicates with the target track of described left turning vehicle; Roundabout section of described left-hand rotation is positioned at the outside of the described left-hand rotation ring segment of the described quadrant that to coexist with it.
Above-mentioned alfalfa leaf type grade separation structure, wherein, across described second main trunk road on described first main trunk road, wear under roundabout section of described left-hand rotation described first main trunk road or on across described second main trunk road.
Above-mentioned alfalfa leaf type grade separation structure, wherein, described right-hand rotation ring road is that one section of circular arc or multi-section circular arc connect and form.
Compared with the prior art, beneficial effect of the present invention is:
-do not need to arrange collector;
Without weaving section between-left rotaring ring road access, improve the traffic capacity of ring road and main line;
-occupation of land, building height, construction costs are a little less than the alfalfa leaf type graded crossing arranging collector.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of a specific embodiment of alfalfa leaf type grade separation structure of the present invention;
Fig. 2 is the structural representation of another specific embodiment of alfalfa leaf type grade separation structure of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
See figures.1.and.2, alfalfa leaf type grade separation structure of the present invention comprises the first crossing main trunk road 1 and the second main trunk road 2, is respectively equipped with a right-hand rotation ring road 3 in four quadrants formed between the first main trunk road 1 and the second main trunk road 2.This alfalfa leaf type grade separation structure also comprises four left rotaring ring roads, and every bar left rotaring ring road is across two adjacent quadrants.Left rotaring ring road comprises turning left roundabout section 41 and left-hand rotation ring segment 42, the entrance turned left roundabout section 41 communicates with the right-hand rotation ring road 3 that left turning vehicle sails out of track, the outlet of left-hand rotation ring segment 42 communicates with the target track of left turning vehicle, the outside of the left-hand rotation ring segment 42 being positioned at the quadrant that to coexist with it for roundabout section 41 that turns left.
In a preferred embodiment of the invention, continue referring to shown in Fig. 1 and Fig. 2, across the second main trunk road 2 on the first main trunk road 1, turn left roundabout section to wear for 41 times the first main trunk road 1 or on across the second main trunk road 2.
Further, right-hand rotation ring road 3 is that one section of circular arc or multi-section circular arc connect and form, and its difference can be known from experience by the structural difference in Fig. 1 and Fig. 2, wherein, ring road 3 of turning right in Fig. 1 is one section of complete circular arc, and ring road 3 of turning right in fig. 2 is connected by multi-section circular arc and forms.
As can be seen from above-described embodiment, advantage of the present invention is:
-do not need to arrange collector;
Without weaving section between-left rotaring ring road access, improve the traffic capacity of ring road and main line;
-occupation of land, building height, construction costs are a little less than the alfalfa leaf type graded crossing arranging collector.
Be described in detail specific embodiments of the invention above, but the present invention is not restricted to specific embodiment described above, it is just as example.To those skilled in the art, any equivalent modifications and substitute also all among category of the present invention.Therefore, equalization conversion done without departing from the spirit and scope of the invention and amendment, all should contain within the scope of the invention.
Claims (3)
1. an alfalfa leaf type grade separation structure, it is characterized in that, comprise crossing the first main trunk road (1) and the second main trunk road (2), a right-hand rotation ring road (3) is respectively equipped with in four quadrants formed between described first main trunk road (1) and described second main trunk road (2), described alfalfa leaf type grade separation structure also comprises four left rotaring ring roads, and left rotaring ring road described in every bar is across two adjacent described quadrants; Described left rotaring ring road comprises turning left roundabout section (41) and left-hand rotation ring segment (42), the described right-hand rotation ring road (3) that entrance and the left turning vehicle of described left-hand rotation roundabout section (41) sail out of track communicates, and the described outlet of left-hand rotation ring segment (42) communicates with the target track of described left turning vehicle; Roundabout section of described left-hand rotation (41) is positioned at the outside of the described left-hand rotation ring segment (42) of the described quadrant that to coexist with it.
2. alfalfa leaf type grade separation structure according to claim 1, it is characterized in that, across described second main trunk road (2) on described first main trunk road (1), wear under roundabout section of described left-hand rotation (41) described first main trunk road (1) or on across described second main trunk road (2).
3. alfalfa leaf type grade separation structure according to claim 1, is characterized in that, described right-hand rotation ring road (3) is that one section of circular arc or multi-section circular arc connect and form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410109949.5A CN104929007B (en) | 2014-03-21 | 2014-03-21 | A kind of alfalfa leaf type grade separation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410109949.5A CN104929007B (en) | 2014-03-21 | 2014-03-21 | A kind of alfalfa leaf type grade separation structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104929007A true CN104929007A (en) | 2015-09-23 |
| CN104929007B CN104929007B (en) | 2017-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410109949.5A Active CN104929007B (en) | 2014-03-21 | 2014-03-21 | A kind of alfalfa leaf type grade separation structure |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU958571A1 (en) * | 1980-12-22 | 1982-09-15 | Kuzairov Nikolaj K | Multilevel highway crossing |
| CN102296503A (en) * | 2011-05-25 | 2011-12-28 | 杨光 | Improved clover leaf overpass |
| CN202787004U (en) * | 2012-09-17 | 2013-03-13 | 上海市政工程设计研究总院（集团）有限公司 | Junction type all-communication flyover crossing structure |
| CN202898927U (en) * | 2012-10-25 | 2013-04-24 | 王大伟 | Left-front-right cross overpass |
| CN203923827U (en) * | 2014-03-21 | 2014-11-05 | 上海市政交通设计研究院有限公司 | A kind of clover blade profile grade separation structure |
-
2014
- 2014-03-21 CN CN201410109949.5A patent/CN104929007B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU958571A1 (en) * | 1980-12-22 | 1982-09-15 | Kuzairov Nikolaj K | Multilevel highway crossing |
| CN102296503A (en) * | 2011-05-25 | 2011-12-28 | 杨光 | Improved clover leaf overpass |
| CN202787004U (en) * | 2012-09-17 | 2013-03-13 | 上海市政工程设计研究总院（集团）有限公司 | Junction type all-communication flyover crossing structure |
| CN202898927U (en) * | 2012-10-25 | 2013-04-24 | 王大伟 | Left-front-right cross overpass |
| CN203923827U (en) * | 2014-03-21 | 2014-11-05 | 上海市政交通设计研究院有限公司 | A kind of clover blade profile grade separation structure |
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| Publication number | Publication date |
|---|---|
| CN104929007B (en) | 2017-06-27 |
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