FR2715950A1 - Double deck motor way system - Google Patents

Abstract

The system is characterised by two superposed roadways (1,2) each comprising two separated carriageways (3,4,5,6) allowing traffic flow in opposing directions. The lower roadway ( 1) is designed to carry heavy vehicles such as lorries and vehicles with hazardous cargoes. The upper roadway (2) carries light vehicles such as cars and motorcycles. The lower roadway (1) is at ground level while the upper roadway (2) is fabricated from reinforced concrete supported on a longitudinal central wall (15) with the edges of the roadway supported by posts (24, 25)

Description

 The object of this patent application is to protect the creation of a new highway system with large traffic without distance limitation to serve the cities included on the national and European territory, the novelty residing in the fact of the total separation of so-called passenger cars without or with trailers of caravans, boat or luggage, motorcycles and small 1-size vans carrying no dangerous products, using the upper traffic plan and transport trucks with or without trailer, and for dangerous products , using the lower circulation plan.

 The device according to the invention makes it possible to remedy collisions between light vehicles and heavy vehicles, the latter causing very serious accidents of crushing in chains.

 The implementation is in the form of a first circulation plane lower (I) at natural ground level with or without slight attenuation of terrain accidents, comprising two completely separate opposite traffic lanes (3-4) and a plane of upper circulation (2) raised exactly above the lower plane and also comprising opposite circulation paths (5-6) also completely separate. Access to the upper tracks is achieved by means of inclined planes arranged at each access ramp or rest air.

 The construction of this new type of motorway comprises for the lanes of the lower plane (I) and for each of them with opposite traffic (3-4), two normal European wide width traffic lanes approved for heavy trucks (, -8 on the right 9-lC) on the left) and a parking strip of the same width (11 on the right 12 on the left), allowing the vehicle to stop at all points if necessary or difficult, then a wide pedestrian crossing suitable for ES: right and center (13 right 14 left) allowing maintenance and access to emergency telephony.

 These two opposing traffic lanes are separated from each other by a supporting wall (15) with passage opening from place to place and a strip of metal guide rail, preventing impacts from vehicles on the axial support wall. from the upper plane (16 on the right 17 on the left) and on the right side a metal guide rail strip on the far right before the pedestrian crossing (18 on the right 19 on the left) and also a resistant metal grid (? (3 to right 21 on the left) reinforcing the protection of the support posts of the upper plane (2 on the right 23 on the left) against accidental impacts of a truck, on the bearing wall (15).

 The construction of this new type of motorway includes for the upper planes a rolling floor which will rest in its center on the axial support wall (15) and on the right lateral side on an alignment of insulated posts (24 on the right 25 on the left) with a regular center distance of a distance which will be determined by the construction plans. This structure will require foundation work (26) for both the axial wall and the right side posts using the embodiments currently used, either by a system of large load distribution plates on the ground or by isolated wells or by piles forced into force.

The free height left for the use of the lower plane will be adjusted for the passage of the highest heavyweights of the European size.

 The upper platform will have three treads (27,28,29 on the right 30,31,32 on the left) for each of the tracks (5 and 6), plus a parking strip (33 on the right 34 on the left) more on the far right and in the center a pedestrian crossing (35 on the right 36 on the left). For the separation of the two tracks in opposite directions, each of these will be provided on their left side with a guide rail (37 and 38) and in the axis of a grid (39) in vertical metal bars high enough to pocket the crossing of opposite lanes. On the right side of each channel a guide rail (40 and 41), then at the right end a grid with sufficiently high metal bars (42 and 43).

The evacuation of runoff water
The lower circulation plan reserved for trucks has the particularity of wandering constantly sheltered from rain, snow and ice allowing higher speed of vehicles. The upper circulation plan being exposed to the weather, the runoff water will be captured by means of a longitudinal chain along the right bank of each of the tracks (44 and 45) taken up by downspouts provided from place in place at the right of the vertical posts and led in the ground to absorption wells avoiding the accumulation of water (46 and 47).

 All the lighting and light signaling constructions currently in use, indicating: traffic jams, fog, ice, accidents, are obviously adaptable on this new type of motorway for each of the traffic plans.

 The construction as a whole will have to be highly resistant to impacts, in particular from trucks and baleen, so that the possible destruction of a post, despite the double metal protection, cannot cause the slightest subsidence of the upper circulation plane and this , using the chain-beam process spanning at least column spans (48 and 49). The construction will be carried out in reinforced concrete and possibly for specific passages in metal constructions.

 This device includes the creation of 10 normal traffic lanes to which are added 4 parking lanes stopped for reasons of difficulties, 8 pedestrian traffic for work or rescue, allowing a blur: increased vehicles increasing financial revenue compensating a obviously higher construction work collar.

 This type of motorway has superimposed traffic plans presents the particular character of not requiring a greater occupation of the ground while ensuring a double capacity of traffic volume and without restriction for heavy vehicles during busy days. weekends and days + erected. It is perfectly achievable for the passage in viaduct as well as for the passages in tunnel by obviously requiring a doubled height.

 This new device will be usable for the transformation of the current highways after studies of the possibilities of corresponding works. The drawing presented includes the device with 10 traffic lanes, but the same device can be enlarged and include an additional traffic lane for each of the opposite planes and directions, that is to say a total of 14 traffic lanes without the principle being modified. ie.

This device can also include 2 bands of circu
heavy goods vehicle on the lower plane and 4 lanes for light vehicles on the upper plane1
a total of 12 traffic lanes, plus 4 parking lanes and 8 pedestrian crossings, the additional width
The upper plane can be obtained by means of a longitudinal cantilever of the upper plane relative to the lower plane, the construction being perfectly achievable.

 This device increases the safety of transport on expressways, makes circulation more permanent and more fluid, avoiding the fatal kills in human lives which are priceless.

Claims (4)

 light and heavy vehicles.  opposite direction (-4 and 5-6), separating traffic  traffic superimposed (1-2) in both directions I) Technical highway system comprising two planes 2) Technical device according to claim 1, charac  terized by the lower plane (1) at ground level and  the upper plane (2) consisting of a concrete deck  reinforced resting on a central longitudinal wall (15),  with passage openings from place to place and  on two rows of edge posts (24-25) with entr '  current range axes. 3) Technical device, according to claims 1 and 2,  comprising additional works such as rails  guides, protective grids, collection devices  rainwater, lighting and light signals  neuses. 4) Device according to claim 2, which can Streak cons  trout using the reinforced concrete technique, prbfabriqub  or entirely metallic structure, according to  soil and environmental necessities that can  mound adapted to existing motorways.