Comprehensive Cargo Transport Structure Optimization Reacherch Under The Constraint Of Energy Consumption

As the material basis for human survival and the indispensable resource in social production,energy plays an important role in human society.The total energy consumption of various industries in China is also increasing with the rapid development of social economy.Transportation industry is a high energy consumption industry,in the whole comprehensive transportation system,the proportion of energy consumption of the cargo transport subsystem is quite large.To reduce energy consumption,we can make policies,improve delivery vehicles with advanced technologies,and adjust the freight structure.This paper mainly introduces the relevant content of China's comprehensive freight transportation system and comprehensive freight energy consumption,and establishes an optimization model of comprehensive transportation freight structure under the constraint of energy consumption,and carries out empirical analysis.First of all,this paper expounds the meaning of the comprehensive transport freight structure from the macroscopic,mesoscopic and microscopic perspectives,and then clarifies the concept of the comprehensive transport freight structure studied in this paper,that is,the proportion relationship between the freight volume and the freight turnover of various freight transport modes.Secondly,it introduces the calculation method of freight energy consumption of various transportation modes,expounds the factors affecting the energy consumption of integrated transportation freight,and introduces the complete decomposition model method of factor contribution analysis.Then,aiming at the minimum energy consumption of comprehensive transport freight,an optimization model of comprehensive transport freight structure under the constraint of energy consumption is established.Finally,the paper analyses the present situation and existing problems of China's integrated transport freight structure and freight energy consumption,and makes an empirical analysis of the optimization of China's freight structure in 2005,2010,2015 and 2020 by using the model.The optimization results verify the feasibility of the optimization model.Based on this,it puts forward some suggestions for the future development direction of China's integrated transport freight system.