CN102041758A - Left-turn flyover - Google Patents
Left-turn flyover Download PDFInfo
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- CN102041758A CN102041758A CN2010105810702A CN201010581070A CN102041758A CN 102041758 A CN102041758 A CN 102041758A CN 2010105810702 A CN2010105810702 A CN 2010105810702A CN 201010581070 A CN201010581070 A CN 201010581070A CN 102041758 A CN102041758 A CN 102041758A
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- bridge
- crossing
- craspedodrome
- overpass
- hand bend
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Abstract
The invention discloses a left-turn flyover and relates to the technical field of flyovers. A straight left-turn flyover is arranged at each intersection of crossroads; and each straight left-turn flyover is provided with bridge openings for vehicles at other intersections to run. Furthermore, the straight left-turn flyover has a split structure or an integral structure; in the split structure, the straight left-turn flyover is divided into a straight flyover and a left-turn flyover; the straight flyover is provided with bridge openings for left-turn vehicles at right intersections to run and for straight vehicles at left intersections to run; and the left-turn flyover is provided with bridge openings for the left-turn vehicles at the right intersections to run and for opposite straight vehicles at the left intersections to run. The invention has the advantages that: 1, traffic lights are absent, vehicles run in their own ways, do not interfere with one another, and smoothly turn left, turn right and straightly run, and the problem of traffic congestion at the intersections is effectively solved; 2, the occupied area is small and ambient construction is not hindered, so the land is saved; and 3, the scale of construction is small, a few materials are used and the investment is low.
Description
Technical field
The present invention relates to the overpass bridge technical field, further is need not the make a circulation overpass bridge that just can realize turning left of vehicle.
Background technology
Along with the development of society, vehicle is more and more.But thing followed vehicle blockage problem is also serious day by day.The applicant finds by careful the observation, intersection or crossroad are the emphasis of traffic jam, and the traffic jam of crossroad, mainly be because the parking during signal lamp (traffic lights), and the vehicle left-hand is turned and to be caused, and under rule was travelled in the domestic vehicular traffic of China, the right-hand bend of vehicle did not influence travelling of vehicle.
Existing overpass bridge structurally has certain defective, when vehicle turns left, needs to make a circulation to the right, changes a great circle, thereby causes floor space big, and it is big to occupy the space, expensive big.
The rotating disc type overpass bridge that has when turning left, has a plurality of crosspoints, is prone to traffic congestion.
Inventor's imagination is carried out the design of the overpass bridge of crossroad thus.
Summary of the invention
The present invention's purpose just provides a kind of left-hand rotation overpass bridge, can make vehicle need not make a circulation just can realize to turn left, and then effectively solve the traffic blocking problem of crossroad.
The objective of the invention is to be achieved through the following technical solutions:
The left-hand rotation overpass bridge comprises pontic, and bridge pier is characterized in that: each crossing at the parting of the ways is provided with craspedodrome left-hand bend overpass bridge, and each craspedodrome left-hand bend overpass bridge is provided with the bridge opening for other crossing vehicle pass-through.
Purpose of the present invention can further realize by following scheme:
Described craspedodrome left-hand bend overpass bridge is a split-type structural, and wherein, the direct lane at each crossing at the parting of the ways is provided with the craspedodrome overpass bridge, and the left turn lane is provided with the left-hand bend overpass bridge; Each craspedodrome overpass bridge and left-hand bend overpass bridge are provided with the bridge opening for other crossing vehicle pass-through.
Described craspedodrome left-hand bend overpass bridge is the combination type structure, and wherein, the craspedodrome at each crossing at the parting of the ways and left turn lane are provided with craspedodrome left-hand bend overpass bridge, and the latter half of coincidence of craspedodrome left-hand bend overpass bridge, first half are separated into craspedodrome bridge and left-hand bend bridge.On the rear portion of each craspedodrome left-hand bend overpass bridge or its anterior craspedodrome bridge and the left-hand bend bridge, be provided with bridge opening for other crossing vehicle pass-through.
The end of the craspedodrome overpass bridge at described each crossing is crossed over its left crossing craspedodrome circuit at least, and does not hinder the setting of its right wing mouth craspedodrome overpass bridge; The end of the left-hand rotation overpass bridge at each crossing is crossed over the craspedodrome circuit at its crossing, opposite at least, and does not hinder the setting of its left crossing craspedodrome overpass bridge.
Described bridge opening refers to: the craspedodrome overpass bridge is provided with bridge opening current for its right wing mouth left-hand bend vehicle and that supply its left crossing through vehicles to pass through; The left-hand bend overpass bridge is provided with bridge opening current for its right wing mouth left-hand bend vehicle and that its crossing, opposite through vehicles is current.
Described craspedodrome overpass bridge is provided with a bridge opening, and is current and current for its left crossing through vehicles for its right wing mouth left-hand bend vehicle respectively.Described craspedodrome overpass bridge also can be provided with two bridge openings, and its right wing mouth left-hand bend vehicle of one confession is current, and its its left crossing through vehicles of two confessions is current.
Described left-hand bend overpass bridge is provided with a bridge opening, and is current current with its opposite through vehicles for its right wing mouth left-hand bend vehicle respectively.Described left-hand bend overpass bridge also can be provided with two bridge openings, and its right wing mouth left-hand bend vehicle of one confession is current, and its its crossing, opposite through vehicles of two confessions is current.
Described craspedodrome left-hand bend overpass bridge, wherein the end of the craspedodrome bridge of the craspedodrome left-hand bend overpass bridge at two relative crossings is arranged at beyond its left crossing craspedodrome line, and does not hinder the setting of the craspedodrome bridge of its left crossing craspedodrome left-hand bend overpass bridge; The bridge opening of described craspedodrome bridge is passed through for the left-hand bend vehicle from the crossing, right side; The bridge opening of left-hand bend bridge is for passing through from its crossing, opposite through vehicles; The end of the craspedodrome bridge of the craspedodrome left-hand bend overpass bridge at two other relative crossing is crossed over its right wing mouth craspedodrome line; First bridge opening of craspedodrome bridge is passed through for the left-hand bend vehicle from the crossing, right side; Second bridge opening is for passing through from its left crossing through vehicles; The 3rd bridge opening is for passing through from its right wing mouth through vehicles; The bridge opening of left-hand bend bridge is for passing through from its crossing, opposite through vehicles.
The right-turn lane at described each crossing is set to the arc of abduction.
Road surface under the described bridge opening is following cancave cambered surface.
Can be with idly garden or building are set in the central authorities of four craspedodrome overpass bridges and other.
Bridge of the present invention can adopt the mode of reinforcing bar water coagulation soil prefabricated component to make, and also can adopt steel to be made into steel bridge.
The present invention has following beneficial effect: 1, no traffic lights, vehicle is taken their own roads, mutually noninterfere, make vehicle turn left with turn right the same with craspedodrome travel unobstructed, thereby effectively solve the intersection traffic blocking problem.2, floor space is little, does not build around not hindering, thereby saves land used.3, construction scope is little, and is few with material, invests little.
Description of drawings
Fig. 1 is the structure top cross-sectional view of six-lane of the present invention;
Fig. 2 is a kind of structure top cross-sectional view of Four-Lane Road of the present invention;
Fig. 3 is the another kind of structure top cross-sectional view of Four-Lane Road of the present invention.
The specific embodiment
In order to make those skilled in the art person understand the present invention program better, and above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with drawings and Examples.
Embodiment 1: as shown in Figure 1, and among the figure: be divided into A, B, four crossings of C, D, wherein, every crossing is divided into 1-6 totally six tracks, 3 tracks of single file account for the road surface half, and the 2nd track (direct lane) in 3 tracks and the 3rd track (left turn lane) are provided with overpass bridge on the right side, and the overpass bridge in the 2nd track is the craspedodrome overpass bridge, the overpass bridge in the 3rd track is the left-hand rotation overpass bridge, wherein dash area is represented entity or bridge pier, is labeled as 21,22,31,32 are the bridge opening.Four craspedodrome overpass bridges form class " well " font structure; The end of the craspedodrome overpass bridge at each crossing is crossed over its left crossing craspedodrome circuit at least, and does not hinder the setting of its right wing mouth craspedodrome overpass bridge.Four left-hand rotation overpass bridges form the class diamond structure; The left-hand rotation overpass bridge at single crossing and craspedodrome overpass bridge form class " people " font structure; The end of the left-hand rotation overpass bridge at each crossing is crossed over the craspedodrome circuit at its crossing, opposite at least, and does not hinder the setting of its left crossing craspedodrome overpass bridge.
With the A crossing is example, and description architecture is as follows:
Be labeled as 21, represent that it is first bridge opening on the craspedodrome overpass bridge in the 2nd track, effect is to pass through for the left-hand bend vehicle (the 3 track vehicles at D crossing) from its right wing mouth (D crossing); Be labeled as 22, represent that it is second bridge opening on the craspedodrome overpass bridge in the 2nd track; Its effect is for passing through from its left crossing (B crossing) through vehicles (the 2 track vehicles at B crossing);
Be labeled as 31, represent that it is first bridge opening of the turning overpass bridge in the 3rd track, effect is to pass through for the left-hand bend vehicle (the 3 track vehicles at D crossing) from its right wing mouth (D crossing); Be labeled as 32, represent that it is second bridge opening of the turning overpass bridge in the 3rd track; Effect is for passing through from its crossing, opposite (C crossing) through vehicles (the 2 track vehicles at C crossing).
Being provided with crossing A of all the other each crossings is not repeated.
Be travelling of the right-hand bend vehicle that cooperates each crossing, the right-turn lane at each crossing is set to the arc of abduction.
Below, be example with the vehicle that sets out by right side, A crossing, illustrate that the vehicle pass-through route is as follows:
When being in the vehicle right-hand bend in the 1st track, can directly be diverted to its right wing mouth (D crossing) the 6th track, finish and pass through right-angled intersection;
When being in the vehicle craspedodrome in the 2nd track, the craspedodrome overpass bridge in last the 2nd track, behind the following overpass bridge, pass second bridge opening (22) of its right wing mouth (D crossing) craspedodrome overpass bridge, pass second bridge opening (32) of its crossing, opposite (C crossing) left-hand rotation overpass bridge again, enter the 5th track, its crossing, opposite (C crossing), finish and pass through right-angled intersection;
When being in the vehicle left-hand bend in the 3rd track, the left-hand rotation overpass bridge in last the 3rd track, behind the following overpass bridge, pass first bridge opening (21) of its left crossing (B crossing) craspedodrome overpass bridge, pass first bridge opening (31) of its left crossing (B crossing) left-hand rotation overpass bridge again, enter the 4th track, its left crossing (B crossing), finish and pass through the crossroad.
The transit route of all the other each crossing vehicles is not repeated with crossing A.
The present invention also can be used for the situation of unidirectional Four-Lane Road (right-turn lane, two direct lanes and a left turn lane) or five tracks (right-turn lane, three direct lanes and a left turn lane): compare above-mentioned unidirectional three tracks, only need the craspedodrome overpass bridge that will be provided with on two (or three) direct lanes and corresponding bridge opening to widen and get final product, be not repeated.
Embodiment 2: as shown in Figure 2, among the figure: be divided into A, B, four crossings of C, D, wherein, every crossing is divided into 1-4 totally 4 tracks, and 2 tracks of single file account for the road surface half, on the right side the 2nd track in 2 tracks (direct lane and left turn lane) be provided with latter half of coincidence, first half from craspedodrome left-hand bend overpass bridge (being down " people " font), wherein dash area is represented entity or bridge pier, be labeled as 21,22,23 are the bridge opening.The end of the craspedodrome bridge of the craspedodrome left-hand bend overpass bridge at each crossing is crossed over its left crossing craspedodrome circuit, and does not hinder the setting of the craspedodrome bridge of its right wing mouth craspedodrome left-hand bend overpass bridge, and on the contrary, ground that can this bridge below is set to concave surface.The turning bridge end of craspedodrome left-hand bend overpass bridge is crossed over the craspedodrome circuit at its crossing, opposite, and does not hinder the setting of the craspedodrome bridge of its left crossing craspedodrome left-hand bend overpass bridge.Setting for the craspedodrome bridge that cooperates the left-hand bend overpass bridge of respectively keeping straight on is provided with the isolation center line in each road central authorities, and this center line can be set width as required, is used to do the fulcrum that builds a bridge, and the vehicle descending.
With the A crossing is example, and description architecture is as follows:
Be labeled as 21 bridge opening, its effect is to pass through for the left-hand bend vehicle from its right wing mouth (D crossing); Be labeled as 22 bridge opening; Its effect is for passing through from its left crossing (B crossing) through vehicles;
Be labeled as 23 bridge opening, its effect is for passing through from its crossing, opposite (C crossing) through vehicles.
Be travelling of the right-hand bend vehicle that cooperates each crossing, the right-turn lane at each crossing is set to the arc of abduction.
With the vehicle that set out by right side, A crossing is example, illustrates that the vehicle pass-through route is as follows:
When being in the vehicle right-hand bend in the 1st track, can directly be diverted to its right wing mouth (D crossing) the 4th track, finish and pass through right-angled intersection;
When being in the vehicle craspedodrome in the 2nd track, last craspedodrome left-hand bend overpass bridge, through the craspedodrome bridge, behind the following bridge, pass the craspedodrome bridge bridge opening (22) of its right wing mouth (D crossing) craspedodrome left-hand bend overpass bridge, pass second bridge opening (23) of its crossing, opposite (C crossing) left-hand rotation overpass bridge again, enter the 3rd track, its crossing, opposite (C crossing), finish and pass through right-angled intersection;
When the vehicle that is in the 2nd track turns left, on the left-hand bend overpass bridge of keeping straight on, through the turning bridge, behind the following bridge, pass the bridge opening (21) of its left crossing (B crossing) craspedodrome left-hand bend overpass bridge, enter the 3rd track, its left crossing (B crossing), finish and pass through the crossroad.
All the other each crossings are not repeated with crossing A.
Embodiment 3: as shown in Figure 3, among the figure: be divided into A, B, four crossings of C, D, wherein, every crossing is divided into 1-4 totally 4 tracks, and 2 tracks of single file account for the road surface half, on the right side the 2nd track in 2 tracks (direct lane and left turn lane) be provided with latter half of coincidence, first half from craspedodrome left-hand bend overpass bridge (being down " people " font), wherein dash area is represented entity or bridge pier, is labeled as 21,22,23,24 are the bridge opening.
The end of the craspedodrome bridge of the craspedodrome left-hand bend overpass bridge at A crossing is arranged at beyond the craspedodrome line of its left crossing (B crossing), and does not hinder the setting of the craspedodrome bridge of its left crossing (B crossing) craspedodrome left-hand bend overpass bridge.
The C crossing is not repeated with the A crossing.
The end of the craspedodrome bridge of the craspedodrome left-hand bend overpass bridge at B crossing is crossed over its right wing mouth (A crossing) craspedodrome line, and does not hinder the setting of its crossing, opposite (D crossing) left-hand bend bridge.Be the setting of the craspedodrome bridge of the craspedodrome left-hand bend overpass bridge that cooperates the B crossing, crossing, opposite (D crossing) left-hand bend bridge the arc that can adopt outer support is set.
The D crossing is not repeated with the B crossing.
The A crossing is labeled as 21 bridge opening, and its effect is to pass through for the left-hand bend vehicle from crossing, right side (D crossing); Be labeled as 22 bridge opening; Its effect is for passing through from its crossing, opposite (C crossing) through vehicles;
The C crossing is not repeated with the A crossing;
The B crossing is labeled as 21 bridge opening, and its effect is to pass through for the left-hand bend vehicle from crossing, right side (A crossing); Be labeled as 22 bridge opening; Its effect is for passing through from its left crossing (C crossing) through vehicles; Be labeled as 23 bridge opening; Its effect is for passing through from its right wing mouth (A crossing) through vehicles; Be labeled as 24 bridge opening; Its effect is for passing through from its crossing, opposite (D crossing) through vehicles;
The D crossing is not repeated with the B crossing.
Right side, the A crossing vehicle pass-through route that sets out is as follows:
When being in the vehicle right-hand bend in the 1st track, can directly be diverted to its right wing mouth (D crossing) the 4th track, finish and pass through right-angled intersection;
When being in the vehicle craspedodrome in the 2nd track, last craspedodrome left-hand bend overpass bridge, through the craspedodrome bridge, behind the following bridge, pass the 3rd bridge opening (23) of its left crossing (B crossing) craspedodrome left-hand bend overpass bridge, pass second bridge opening (22) of its right wing mouth (D crossing) left-hand rotation overpass bridge again, after pass second bridge opening (22) of its crossing, opposite (C crossing) left-hand rotation overpass bridge again, enter the 3rd track, its crossing, opposite (C crossing), finish and pass through right-angled intersection;
When the vehicle that is in the 2nd track turns left, on the left-hand bend overpass bridge of keeping straight on, through the turning bridge, behind the following bridge, pass first bridge opening (21) of its left crossing (B crossing) craspedodrome left-hand bend overpass bridge, enter the 3rd track, its left crossing (B crossing), finish and pass through the crossroad.
The C crossing is not repeated with the A crossing.
Right side, the B crossing vehicle pass-through route that sets out is as follows:
When being in the vehicle right-hand bend in the 1st track, can directly be diverted to its right wing mouth (A crossing) the 4th track, finish and pass through right-angled intersection;
When the vehicle that is in the 2nd track is kept straight on, on the left-hand bend overpass bridge of keeping straight on, through the craspedodrome bridge, behind the following bridge, pass the 4th bridge opening (24) of its crossing, opposite (D crossing) craspedodrome left-hand bend overpass bridge, enter the 3rd track, its crossing, opposite (D crossing), finish and pass through right-angled intersection;
When the vehicle that is in the 2nd track turns left, on the left-hand bend overpass bridge of keeping straight on, through the turning bridge, behind the following bridge, pass first bridge opening (21) of its left crossing (C crossing) craspedodrome left-hand bend overpass bridge, enter the 3rd track, its left crossing (C crossing), finish and pass through the crossroad.
The D crossing is not repeated with the B crossing.
In the present embodiment, the craspedodrome bridge portion of the craspedodrome left-hand bend overpass bridge at B crossing and D crossing can be split, also can be connected as a single entity.
Among above each embodiment of the present invention, be travelling of the left-hand bend vehicle that cooperates its right wing mouth, the right-turn lane at each crossing is set to the arc of abduction.
In case of necessity, dipping under the bridge opening can be formed cambered surface, with the design of suspension bridge, vehicle pass-through.
The bridge opening height can be by general traffic rules setting; Outsized vehicles such as superelevation, can take from the right side, crossing around method current.
Confession pedestrian or bicycle cross the transit route on road surface, can be arranged at the outer end of overpass bridge on the road surface, also can solve by underground passage is set.
Idle ground of the present invention can be provided with related building.
The above is the specific embodiment of the present invention only, is not that the present invention is done any pro forma restriction; Protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses, and the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (10)
1. the left-hand rotation overpass bridge comprises pontic, and bridge pier is characterized in that: each crossing at the parting of the ways is provided with craspedodrome left-hand bend overpass bridge, and each craspedodrome left-hand bend overpass bridge is provided with the bridge opening for other crossing vehicle pass-through.
2. left-hand rotation overpass bridge according to claim 1 is characterized in that: described craspedodrome left-hand bend overpass bridge is a split-type structural, and wherein, the direct lane at each crossing at the parting of the ways is provided with the craspedodrome overpass bridge, and the left turn lane is provided with the left-hand bend overpass bridge; Each craspedodrome overpass bridge and left-hand bend overpass bridge are provided with the bridge opening for other crossing vehicle pass-through.
3. left-hand rotation overpass bridge according to claim 1, it is characterized in that: described craspedodrome left-hand bend overpass bridge is the combination type structure, wherein, the craspedodrome at each crossing at the parting of the ways and left turn lane are provided with craspedodrome left-hand bend overpass bridge, and the latter half of coincidence of craspedodrome left-hand bend overpass bridge, first half are separated into craspedodrome bridge and left-hand bend bridge.
4. left-hand rotation overpass bridge according to claim 2 is characterized in that: the end of the craspedodrome overpass bridge at described each crossing is crossed over its left crossing craspedodrome circuit at least, and does not hinder the setting of its right wing mouth craspedodrome overpass bridge; The end of the left-hand rotation overpass bridge at each crossing is crossed over the craspedodrome circuit at its crossing, opposite at least, and does not hinder the setting of its left crossing craspedodrome overpass bridge.
5. left-hand rotation overpass bridge according to claim 2 is characterized in that: described bridge opening refers to: the craspedodrome overpass bridge is provided with bridge opening current for its right wing mouth left-hand bend vehicle and that supply its left crossing through vehicles to pass through; The left-hand bend overpass bridge is provided with bridge opening current for its right wing mouth left-hand bend vehicle and that its crossing, opposite through vehicles is current.
6. left-hand rotation overpass bridge according to claim 5 is characterized in that: described craspedodrome overpass bridge is provided with two bridge openings, and its right wing mouth left-hand bend vehicle of one confession is current, and its its left crossing through vehicles of two confessions is current.
7. left-hand rotation overpass bridge according to claim 5 is characterized in that: described left-hand bend overpass bridge is provided with two bridge openings, and its right wing mouth left-hand bend vehicle of one confession is current, and its its crossing, opposite through vehicles of two confessions is current.
8. left-hand rotation overpass bridge according to claim 3, it is characterized in that: described craspedodrome left-hand bend overpass bridge, the end of the craspedodrome bridge of the craspedodrome left-hand bend overpass bridge at two relative crossings wherein, be arranged at beyond its left crossing craspedodrome line, and do not hinder the setting of the craspedodrome bridge of its left crossing craspedodrome left-hand bend overpass bridge; The bridge opening of described craspedodrome bridge is passed through for the left-hand bend vehicle from the crossing, right side; The bridge opening of left-hand bend bridge is for passing through from its crossing, opposite through vehicles; The end of the craspedodrome bridge of the craspedodrome left-hand bend overpass bridge at two other relative crossing is crossed over its right wing mouth craspedodrome line; First bridge opening of craspedodrome bridge is passed through for the left-hand bend vehicle from the crossing, right side; Second bridge opening is for passing through from its left crossing through vehicles; The 3rd bridge opening is for passing through from its right wing mouth through vehicles; The bridge opening of left-hand bend bridge is for passing through from its crossing, opposite through vehicles.
9. left-hand rotation overpass bridge according to claim 5 is characterized in that: the right-turn lane at described each crossing is set to the arc of abduction.
10. according to claim 1 or 2 or 3 or 5 or 7 or 8 described left-hand rotation overpass bridges, it is characterized in that: the road surface under the described bridge opening is following cancave cambered surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105810702A CN102041758A (en) | 2010-12-10 | 2010-12-10 | Left-turn flyover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105810702A CN102041758A (en) | 2010-12-10 | 2010-12-10 | Left-turn flyover |
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| Publication Number | Publication Date |
|---|---|
| CN102041758A true CN102041758A (en) | 2011-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105810702A Pending CN102041758A (en) | 2010-12-10 | 2010-12-10 | Left-turn flyover |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373659A (en) * | 2011-11-08 | 2012-03-14 | 郭关鸣 | Direct leftward turning interchange overpass |
| CN102587245A (en) * | 2012-03-18 | 2012-07-18 | 肖大方 | Polyporous low and miniature flyover |
| CN106567301A (en) * | 2016-10-25 | 2017-04-19 | 余蓉 | Crossroad left-turning overpass |
| CN113174791A (en) * | 2021-04-23 | 2021-07-27 | 李益安 | Five-fork five-bridge five-layer overpass with four bridge floors and no ramp |
-
2010
- 2010-12-10 CN CN2010105810702A patent/CN102041758A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373659A (en) * | 2011-11-08 | 2012-03-14 | 郭关鸣 | Direct leftward turning interchange overpass |
| CN102587245A (en) * | 2012-03-18 | 2012-07-18 | 肖大方 | Polyporous low and miniature flyover |
| CN106567301A (en) * | 2016-10-25 | 2017-04-19 | 余蓉 | Crossroad left-turning overpass |
| CN113174791A (en) * | 2021-04-23 | 2021-07-27 | 李益安 | Five-fork five-bridge five-layer overpass with four bridge floors and no ramp |
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Application publication date: 20110504 |