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Double-image step flyover
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A technology of overpass and double mirror, applied in the direction of roads, roads, buildings, etc., can solve the problems of long construction period, high cost, large floor space, etc., and achieves less floor space, large traffic flow, and good symmetry performance. Effect
Inactive Publication Date: 2010-03-10
WUHAN WANFUXING TECH
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[0003] At the four-way crossing with a width of 60 meters in the city, most of the overpasses built today are three-story circular semi-interchangeable overpasses. To build this kind of overpass requires demolition of many houses around it. The construction period is long, the cost is high, and the area is large; for example, Hankou The Yangtze River Hotel overpass does not need traffic lights when there are not too many vehicles. Now that the traffic volume is heavy, traffic lights must be set up, but the problem of full intercommunication has not been fundamentally solved.
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Embodiment 1
[0033] Road width b 1 = 60 meters, road width b 2 When =60 meters, the typical intersection of vertical and horizontal trunk roads. The main design indicators are: vehicle speed V=40Km / h, longitudinal gradient 5%, transverse coefficient μ=0.18
[0034] according to Figure 1-4 Shown, a kind of double mirror image ladder overpass, including:
[0036] There are four right-turn lanes on the ground, two straight lanes from east to west, and a total of six traffic lanes, such as figure 1 shown. There are also six traffic lanes (4 left, 2 straight) on the second floor of the overpass.
[0037] 2. The mirror ladder composition of the carriageway on the second floor:
[0038] The second level of the flyover consists of two parts:
[0039] One part is a span-type elevated overpass going straight in the north-south direction; this part is cut along the symmetrical plane of the center line of the driving route, and moves a certain distance ...
Embodiment 2
[0043] When the four-way intersection, when the road width b1=b2=40 meters, the design vehicle speed V=25Km / h, the longitudinal gradient is 6%, μ=0.18, R=60 meters. A double-mirror stepped overpass comprising:
[0044] The lane width is 8.5m, such as Figure 6 As shown, the total length of the lane is 400 meters, and it is set in the downtown area, which is a minimum extreme value of the design.
Embodiment 3
[0046] Such as image 3 As shown, when connecting the approach bridge of the river bridge, there are three (left, middle, and right) lines when entering the bridge, and three lines (left, middle, and right) when getting off the bridge.
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Abstract
The invention relates to a double-image step flyover which comprises four right turn ramps, two through lanes, four left turn ramps and two through lanes, wherein the four right turn ramps and the twothrough lanes are arranged on the ground; and the four left turn ramps and the two through lanes are arranged on a bridge. In the invention, the two through lanes in a master line direction are separately arranged, and move for a section of distance to form double humps so as to form the step flyover, and the four left turn ramps penetrate through the step flyover. The through lanes and the leftturn ramps form the step conversion, and the right turn ramps and the left turn ramps form the image conversion. The flyover is in double-shaft symmetry around a center shaft of an intersection. The invention has the advantages that two layers of completely interchanged flyovers are built at the 60m-wide crossing, the occupation area is less, the traffic flow is large, ground-based rail traffic isremained between the two layers of completely interchanged flyovers, and a passenger foot-bridge and a transfer station of the ground-based rail traffic can be arranged on the crossing.
Description
technical field [0001] The invention relates to the technical field of overpasses, in particular to a double mirror image ladder overpass. Background technique [0002] The current urban main roads are mostly 60-80 meters wide, and the intersections of these streets hinder the development of vehicles in the city. Cities such as Beijing, Shanghai, Nanjing, and Wuhan often have traffic jams. In severe cases, traffic jams last for 1-3 hours. Seriously hinder the development of our country's economy. [0003] At the four-way crossing with a width of 60 meters in the city, most of the overpasses built today are three-story circular semi-interchangeable overpasses. To build this kind of overpass requires demolition of many houses around it. The construction period is long, the cost is high, and the area is large; for example, Hankou The Yangtze River Hotel overpass does not need traffic lights when there are not too many vehicles. Now that the traffic volume is heavy, traffic lig...
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Application Information
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