CN201553961U

CN201553961U - Double-arch underpass

Info

Publication number: CN201553961U
Application number: CN2009201581567U
Authority: CN
Inventors: 沈家伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-09
Filing date: 2009-06-09
Publication date: 2010-08-18
Anticipated expiration: 2019-06-09

Abstract

The method for traditionally solving the traffic jam in the urban areas is to build the overpass or elevated road, however, the street intersection in the urban areas is narrow and not suitable for building the overpass; meanwhile, most cities are unwilling to adopt the method for building the overpass which can destroy the urban style. For solving the problem, the utility model provides a double-arch underpass, which uses a wider traffic trunk in the city to solve the traffic problem at the street intersection in the urban areas with the method of underground interchange. The double-arch underpass consists of two to four crossing underpasses, wherein two arch crossing underpasses are used as lanes for left turning and distributed at two sides outside the intersection, so that the intersection structure becomes simple. The underpasses do not intersect with each other, and only one layer is arranged underground, and the effect of the overpass can be achieved at the same time. Besides, if the crossing underpass is changed into the overpass at the original position, the double-arch overpass can be achieved. Therefore, the double-arch underpass is the underpass as well as the overpass.

Description

Ears formula grade separation tunnel

Technical field the utility model ears formula grade separation tunnel belongs to the urban highway traffic category.

Because the surge of automobile quantity is also managed crossroad access with traffic lights, vehicle often will wait for a long time and could pass through, thereby the traffic congestion phenomenon occurs in the present city of background technology.The way that tradition addresses this problem is to build overpass bridge.But present overpass bridge is done bigger and bigger, becomes increasingly complex, and what have reaches three or four layers, and floor space is very big.On the other hand, many street canyons in the urban district, the crossing is not suitable for building overpass bridge.Some places can be built exactly, and overpass bridge also can destroy the urban district style and features, and many cities also are unwilling to adopt, and have to continue to use traffic lights, make that traffic congestion becomes a difficult problem in the urban district.

Summary of the invention is in order to solve this problem of traffic congestion in the urban district, and the utility model ears formula grade separation tunnel is the traffic that solves crossroad in the urban district with underground passage.

The one traffic major trunk roads to several broads are all arranged in the many cities of China, and its both sides then mostly are narrower street.Because the traffic lights management is still being carried out in the crossing, major trunk roads are also driven a vehicle not smooth, even the traffic congestion phenomenon occurs.Ears formula grade separation tunnel is the width that utilizes major trunk roads, and usefulness is located at the underground tunnel, street excessively of major trunk roads, realizes the crossroad access graded crossing, makes major trunk roads cancellation traffic lights without hindrance by vehicle pass-through.As long as major trunk roads are gone everywhere without any hindrance here, the traffic congestion problem in the whole urban district is also inevitable greatly to be alleviated in the urban district.Because ground has only genuine import and export, there are not other buildings, also can not influence the style and features in urban district.

Ears formula grade separation tunnel is mainly crossed the tunnel, street by two to four and is formed.Its structure, its direct lane is with to turn right sweep identical with general overpass bridge.Direct lane is in the middle of the crossing; Turning right curved track is directly to turn round on ground routinely.Different is that turning curved track, a left side is to be in beyond the both sides, crossing, respectively has the ear formula of an approximate half-circular to cross the tunnel, street.Genuine inlet is located at the right outside of place street vehicle forward direction, and outlet is located at the left-external side of place street correspondence.Vehicle enters by ramp, will finish to turn through 180 degree and reverse end for end in genuine, to the ground of street opposite side, drives towards the direction that will go by ramp again.On two road in length and breadth, four direction will turn the curved vehicle in a left side, all will cross the tunnel, street from these two ear formulas and pass through.As shown in Figure 1, just south, west both direction will turn the curved vehicle in a left side, be by belt road ear formula tunnel in the east; East, north both direction will turn the curved vehicle in a left side, be by the ear formula tunnel in west.Therefore, the characteristics in ears formula grade separation tunnel are beyond the both sides, crossing, have two conducts to turn the ear formula passage of left sweep, and make crossing grade separation structure become simple.Because shape tunnel, half garden exactly likes ear, so name ears formula.

Can there be four kinds of different forms in ears formula grade separation tunnel according to the difference in the craspedodrome tunnel of centre, i.e. osculant, outside type, branch open form and reduced form.

Osculant is that the two-way tunnel of keeping straight on is in the centre at crossing, and it is too narrow to be mainly used in vertical street, the crossing that can not expand (Fig. 1) substantially; Outside type is that the two-way tunnel of craspedodrome is in beyond vertical road one side in crossing, is mainly used in vertical street one side and can expands the crossing that opposite side can not be expanded (Fig. 2); The branch open form is that the two-way tunnel of will keep straight on splits into two unidirectional tunnels, be arranged in beyond the both sides, vertical street, crossing, be mainly used in the crossing that both sides, vertical street can only limited expansion, and two crossing close together, can share the crossing (Fig. 3) in a branch open form grade separation tunnel again; Reduced form is to have only two ear formula tunnels, is mainly used in the T-shaped road junction, or vertical less crossroad (Fig. 4) of road vehicle.

On the other hand, if, when on original position, changing overpass into, promptly become the ears formula overpass bridge of four types with the tunnel, street excessively in these four types.Its traveling method and ears formula grade separation tunnel are basic identical, not only can be used in the urban district, also can be used for outside the urban district, can solve the traffic problems at crossing equally.Therefore, the utility model has eight figures, and four is the grade separation tunnel, and four is overpass bridge.Because the genuine figure with overpass bridge of the grade separation of same type is identical, in order not repeat, only lists four kinds of figures here.

The advantage in ears formula grade separation tunnel is;

One, floor space is little, and ground does not have other buildings except that genuine access, and is little to the influence of urban district style and features.

Two, simple in structure, two ear formula tunnels move to the both sides beyond the crossroad, and the grade separation at crossing is simplified the structure.Do not cross between the tunnel, street and intersect, underground have only one deck.Shallow apart from the face of land, be easy to construction.

Three, in the ears formula grade separation tunnel of four types, except that osculant, the craspedodrome tunnel of outside type and branch open form all is located at beyond vertical road, and vertical road is not destroyed.Vertical road of simple type is untouched especially not moving.The access in two ear formula tunnels also is located at the outside of belt road or in addition, and is also little to the influence of original road.These three types in case of emergency will can also directly be turned round on ground when the crossing at special cars such as ambulance and fire fighting trucks temporarily.

Description of drawings

Fig. 1 is osculant ears formula grade separation tunnel.

Fig. 2 is type ears formula grade separation tunnel, the outside.

Fig. 3 is for dividing open form ears formula grade separation tunnel.

Fig. 4 is reduced form ears formula grade separation tunnel.

Shown in the figure, A is ear formula tunnel, and wherein solid line is a ramp, and dotted line is genuine.B is genuine for keeping straight on, and wherein solid line is a ramp, and dotted line is genuine.C is a road axis.The arrow indication is the direction of traffic of vehicle.

Specific embodiment ears formula grade separation tunnel is at traffic major trunk roads design spacious in the urban district, is applicable to broad or narrow crossroad, two road one wide in length and breadth.

The traveling method in ears formula grade separation tunnel, as shown in Figure 1, the vehicle that south is come, the direct lane in the middle of wherein through vehicles is walked passes through; Turn right curved vehicle by general overpass bridge routine, turn right sweep from ground and pass through; Turn the curved vehicle in a left side earlier will in company with turn right curved vehicle turn right curved after, enter In-Ear tunnel again.In genuine, arrive the ground of rank street opposite side after the turnback, continue again to keep straight on just to reach and turn the curved purpose in a left side.Whole process, vehicle will be changeed 270 degree.Enter the tunnel because vehicle will turn again after right curved, so the position in ear formula tunnel can not be too near apart from the crossing, with turn the curved vehicle in a left side and adapt.

The vehicle that the west is come, wherein through vehicles and turn that right to bend vehicle identical with above way to get there.Turn the curved vehicle in a left side and will enter In-Ear tunnel again in company with through vehicles by behind the crossing before this.(this tunnel also is the same tunnel that the curved vehicle in a left side will be turned in south) turns right bending again behind the ground that arrives the rank street opposite side, enter vertical street, reaches to turn the curved purpose in a left side.Whole process, vehicle also are to change 270 degree.

Because east and northern vehicle to run method of coming are with above identical, with regard to no longer repetition.

Claims

1. ears formula grade separation tunnel, by two ear formulas cross the tunnel, street, kept straight on tunnel, street and ground turns right sweep and forms, it is characterized in that: it is genuine as turning curved track, a left side that two ear formulas are crossed the street, is distributed in the both sides beyond the crossroad.

2. cross the tunnel, street according to described two the ear formulas of claim 1, it is characterized in that: genuine is approximate half-circular, genuine inlet is located at the right outside of place street vehicle forward direction, outlet is located at the left-external side of place street correspondence, enter by ramp, vehicle will be finished in genuine and turn through 180 degree and reverse end for end, again by the ground of ramp to the street opposite side.