On The Multiplex Public Transit System Architecture

Increasing distance and more diversification of resident trip and tight cooperative transport are contributed by the Urbanization, mechanization, economic development and the city outspread, which lead to multiplex requirements of the residents' trip. Diversifications of city functions and social activities have become the basic feature of the city, combinatorial trips will build the main part of modern people daily life. Accordingly, it requires the traffic supply takes more concern on the variety, equality and the comprehensiveness of the traffic mode; ensure all parts of traffic mode are adequately exerting their reasonable utilization, the hominy and sustained development. Moreover the Public Transit is our country certain choice and essential factor of sustained development, whose development must be corresponded with increasingly complex trip demand.Accordingly, based upon summarizing domestic and overseas studying production, this paper analyses trip behavior characters and puts forward basic theory of trip behavior chain:①the trip derive;②the trip diversity;③the trip equality;④the trip spatio-temporal conditionality;⑤the trip dynamic;⑥the trip fluctuating;⑦the trip gradient. Aiming at activity chain, it emphatically discusses the trip gradient of time, distance, density, price, elasticity and mode providing. From the angle of personal property, family property, unit property and society property, it discusses spatio-temporal effect, density effect congregated by spatio-temporal effect, mode choice and supply effect, in order to be reason out development trends of the trip variety and public transit multiplicity.The traffic supply must provide mode gradient to satisfy requirements of variety trip requirement. therefore, based on the analyse of cities and transportation development imbalance , matching relation between district character and traffic mode selection and trip chain theory etc, this paper puts forward the multiplex public transit connotation,extension and architecture:based on city regional space layout character and developing trend, it puts forward multi-layer, tridimensional and synthetical multiplex public transit architecture including layer line network, graded hinge, diversiform favourable ticket and integrative management which uses layer line network and hinged passenger transport organizing to solve traffic inconsistency and support city sustained development..The essential factor to solve city transit problems is achieving multimode through transport. Consequently, based upon multiplicity and the method of conformity harmony, the multiplex Public Transit exerts technical economy advantage of all kinds of traffic mode, which consolidates difference level of traffic route into a single net in the areas of the physical network and transit executive. Referring to physical network, public transit routes possess the character of logic overall arrangements and the rational distributary by closely linked by hinges(station), each route takes its own role as well as complement predominance each other to make through transport to work smoothly, eliminating exchanging physics balk (passengers exchanging on getting on or off,distance of horizontally moving etc),timing balk (waiting time of exchanging and waiting environments etc),multiplex public transit system aims to construct the network excellently extending in all directions by combining stream with branch bus line, inosculating high-class, intermediate and low-end bus line, integrating rapid, slow and different flux bus line; Referring to the transit executive, the reasonable ticket system is allowing passengers transfer for free or lower price in each direction to eliminate transfer fee balk, achieve high effective transferring and multimode through transport, it lets the traditional "single line" trip form passengers be instead of modern "network" trip form to ensure its service to be"network, comfortable, convenient".Under the frame of multiplex public traffic system, concluding domestic and oversea traffic network plan theory and method, taking aim at establishing perfect network,reasonable construction,advanced equipment,well-informed,high effective and quality modern city traffic system, this paper composes multiplex public traffic model and style. Meanwhile, based upon tend towards searching method, Ant Colony Algorithm, Role-Hierarchy accessing control etc, it composes layer traffic network and calculate participation rate of traffic mode. Simultaneity, Chengdu is taken as an example to construct multiplex public transit system based on space layout, developing trend and trip gradient, it forms hierarchy of multiplex public transit nerwork which takes mass rapid transportation as framework, routine buses as principal part, branch buses as support, taxies as complementarity and cooperates with other traffic modes.The development of multiplex public transit system must be based upon the reasonable traffic construction. Therefore, based upon overall-conformity of traffic plan, construction, executive, management and service, harmonious traffic system must be constructed which possess the character of well-ordered structure, mutual reparative function, integration optimizing, integrative plan and share. It also need to construct eight platforms to reinforce city viability and support harmonious traffic system, they are as followed:①graded and well-ordered road network;②synthesized and optimizing public transit system;③different regional park-and-ride system;④rational and graded Freight Logistics network;⑤efficient navigating intelligent traffic control;⑥safe and sustainable traffic environment;⑦unisonous and mutual reparative synthetical traffic architecture;⑧integral rural and urban traffic inducting and supporting. Chengdu city is taken as an example to construct multiplex public transit system. Based on city space layout, developing trend and trip gradient, it forms multiplex public transit system which takes mass rapid transportation as framework, general bus as principal part, branch bus as support, taxi as complementarity and cooperates with other traffic modes.The final target of multiplex public transit system is to form coupling traffic system which treats public transit as principal part, private public transit as complementary, accordingly accelerate achieving accelerate realizing harmonious trip environment based on integral, systemic and efficient traffic, multiplex public transit system, intelligent traffic control, humanism traffic circumstance, support city sustained development and perfect harmonious society construction.