Research On The Interaction Between Distribution Density Of The Shared Bikes And Residents' Travel Behavior

In the era of "Internet accelerated speed",bike-sharing has been popularized in China with the rapid development of the sharing economy.As a new type of travel mode,bike-sharing has the advantages of economy,flexibility and convenience in short distance travel and transferring public transit,which provides a new way to solve the "last kilometer" problem of residents'travel and realizes door-to-door travel service.In large and medium-sized cities at home,bike-sharing+public transit has gradually become an important alternative to car travel through collaborative transferring.The experience of continuous and good bike-sharing+public transit services will continue to attract residents' travel choices,and then cultivate residents to form the habit of using bike-sharing+public transit.However,the dense distribution of shared bikes not only facilitate the convenient travel of residents,but also disturb the normal use of urban public space and seriously destroy the convenience and safety of residents' walking.It is worth studying how to give consideration to residents' usage habits and urban public space order,and how to seek the best distribution density of shared bikes.First of all,this paper evaluates the intensity of residents' habit of bike-sharing+public transit mode increased by good travel experience.A questionnaire survey was conducted in simple cities to obtain the modal splits of different travel modes when not using bike-sharing+public transit.Then,we use the theory of planned behavior and structural equation model to clarify the change process of the modal splits of public and private traffic modes and the change in travelers' willingness to use cars after forming the habit of using bike-sharing+public transit.Secondly,this paper studies the distribution density of shared bikes in the case of paid occupancy of urban public space.Based on the questionnaire survey data,the relationships between the distribution density and users' utility are determined.According to the characteristics of pedestrian traffic flow and the evolution theory of the risk formation of crowd congestion accidents,fit the function of the impact of distribution density of shared bikes on the reduction of public space,pedestrian convenience and safety;then build the optimization model to optimize the distribution density of shared bikes based on the factors such as users'utility,the public space occupation cost and the risk of safety accidents.The research on the residents' choice of travel mode shows that the measures to improve their travel experience,such as increasing the density of shared bikes,properly reducing the cost and optimizing the construction of transfer facilities,can strengthen the residents' choice habit intensity and reduce their willingness to purchase private cars and use taxis.From the perspective of urban public space,the research on the optimization of the distribution density of shared bikes shows that when the distribution density of shared bikes is 0.1512 in the study area,the cost of occupying public space is at a low level,which can not only ensure the convenience and safety of pedestrians,but also take into account the needs of residents for the normal use of shared bikes.