Research On Land Use Optimization Of Nanning Rail Transit Stations Under TOD Mode

The TOD model provides the possibility for the sustainable development of the city.The TOD-oriented rail transit construction is conducive to promoting people’s daily travel from private cars to public transportation,thereby reducing the number of private cars on the road and effectively alleviating urban traffic congestion.,and form a living community suitable for people to live in.With the rapid development of urban rail transit in my country,the corresponding land use problems around the stations also arise.This paper focuses on the quantitative research on the land use around the site under the TOD mode,and aims to provide data support for the land use optimization of TOD sites or the land use planning of new sites by establishing a quantitative model.This paper sorts out the basic concepts,classification and development principles of TOD,discusses the correlation between rail transit and land use,and sorts out the current status and problems of land use under the current TOD model.After surveying and analyzing 20 typical stations of Nanning rail transit,comprehensive evaluation was carried out,and then BP neural network was used to fit and learn the basic data and evaluation data of the stations,and the station land use suitable for Nanning was constructed.grading system.Aiming at the problems existing in the existing TOD station land planning research,such as oversimplification of the model,strong subjectivity of parameters,and incomplete goal setting,a multi-objective planning model based on the three goals of land use score,rail transit passenger volume,and public land ratio was established,and a multi-objective planning model was established.It is solved by NSGA2 genetic algorithm to calculate the land use structure to optimize the site land use.Through empirical research,the applicability of the model is verified,and implementation suggestions are put forward according to the optimization results,in order to provide new ideas for site area planning,and also provide decision-making reference for land use,development planning and the establishment of land management systems.