Multi-Layer Underground Urban Traffic System Design
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Solution Overview
Problem
Traditional urban traffic systems are plagued by congestion, limiting city development and resident experience, necessitating innovative use of underground space to enhance transportation efficiency.
Innovation Solution
A multi-layered urban traffic system with a ground plane layer devoid of roadways and three underground layers: motor vehicle layers with perpendicular main directions, non-motor vehicle layers, and interconnected road systems, including ramps for smooth navigation and parking, along with municipal corridors and reservoirs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional urban traffic systems are used, then road networks are built on ground surface, but traffic congestion occurs and city development is restricted
Solution Approach 1:
The patent transitions from two-dimensional ground surface traffic to three-dimensional multi-layer underground traffic system. The ground plane layer is completely removed from traditional road networks, and all motor vehicle traffic is relocated to underground layers, utilizing vertical space to eliminate surface congestion and expand transportation capacity.
Solution Approach 2:
The traffic system is segmented into distinct functional layers: ground plane layer for pedestrians and vegetation, underground first layer for motor vehicles with first main direction, underground second layer for motor vehicles with second main direction, and underground third layer for non-motor vehicles. This segmentation allows independent optimization of each layer and eliminates conflicts between different traffic types.
2Ease of operation
If motor vehicles share the same road layer, then level crossings are needed, but congestion and delays occur
Solution Approach 1:
Motor vehicles operating in different main directions are separated into different underground layers. The first main direction and second main direction are arranged in perpendicular or nearly perpendicular orientations across different layers, eliminating the need for level crossings and ensuring smooth traffic flow without delays.
3Productivity
If ground plane layer includes roadways, then transportation is provided, but green space and living quality are reduced
Solution Approach 1:
The roadway network is completely extracted from the ground plane layer and relocated to underground layers. The ground plane layer is transformed into a pure green space dedicated to vegetation, residences, and pedestrian activities, maximizing green coverage and living quality while maintaining transportation functions in the underground.
4Quantity of substance
If sufficient parking lots are constructed, then vehicle storage is provided, but underground space utilization must be optimized
Solution Approach 1:
Parking lots are integrated into the underground layer structure, utilizing vertical space to provide sufficient parking capacity. The underground layers serve dual purposes: transportation corridors for motor vehicles and parking regions, maximizing space utilization while maintaining adequate parking provision.
Data Source
AI summary
The present invention discloses a thoroughly smooth urban traffic system, which has a two-dimensional urban plane and a road with two main directions which are perpendicular or nearly perpendicular to each other. On an underground first layer, the road in the first main direction is occupied separately, and all automobiles, subways, trains and municipal corridors in this direction are roughly parallel without level crossing, and are smooth. On an underground second layer, the road in the second main direction is occupied separately, and all automobiles, subways, trains and municipal corridors in this direction are roughly parallel without level crossing, and are smooth. The underground layers can be provided with urban sufficient parking lots. An underground third layer is used for non-motor vehicle roads, parking and a large-scale reservoir. On a ground plane layer, only houses, plants, people, open-air bars, etc. are exposed in the sun, to establish a veritable urban park.