Research On Battery-Swap Station Location And Path Selection Of Electric Muck Trucks Based On Metro Construction

The process of urban subway construction will be accompanied by the generation of a large amount of residual soil,how to effectively handle is a common problem faced by the government and enterprises.As a key part of the whole processing process,transportation requires the use of dumper trucks to transport the residual soil from the subway outlet to the waste disposal site to complete the dregs removal work.In order to actively respond to the national low-carbon policy,it is necessary to consider how to make the transportation process more energy-saving and environmentally friendly.Electric heavy trucks with their outstanding advantages of zero pollution and low energy consumption can effectively solve this problem and improve the economy and environmental protection of transportation while meeting the demand.Now Xuzhou City vigorously promote the pure electric dumper truck,the electric dumper truck under the change of electricity mode has been officially put into the work of the metro dumper transport.Since the actual transportation process of the dump truck is often accompanied by overloading and spilling and other dangerous phenomena,its driving path needs to be planned in advance and verified by the relevant approval departments before it can perform the transport task.Different from the transportation dispatching problem of general fuel dump truck,electric dump truck has limited battery capacity,and it is difficult to guarantee long enough range,so it needs to go to the corresponding power exchange facility for electric energy replenishment on the way to complete the dump cleaning task,and whether the choice of the construction location of the power exchange station is reasonable also affects the planning of its transportation path.Therefore,it is of great significance to combine the site selection of the power exchange station with the path planning of electric dump trucks for the scale development of electric heavy trucks and their power exchange facilities in the field of new energy vehicles.First,the location of the electric dump truck exchange station is initially selected.There are many and complex factors influencing the location of the switching station,and the quantitative analysis method by establishing mathematical models in the existing research usually ignores the qualitative factors.Therefore,in this thesis game theory is applied to the site selection study,and the macro factors influencing the location of electric dump truck substation are considered in terms of geographic location and environment,economy,society and technology.The main influencing factors are identified through hierarchical analysis and used as the game participants in the game model,and the influence intensity among the candidate solutions is used as the payment function to achieve the ranking comparison of the alternative solutions for the siting of the electric dump truck replacement station by transforming the game model into a linear programming model solution.On the basis of completing the initial site selection of the exchange station,this thesis further investigates the problem of collaborative optimization of the site selection and the transportation path of the electric dump truck for the exchange station.It can be described as multiple dump trucks make multiple round trips from multiple departure points to an end point disposal site within a specified period of time,and go to the exchange station for electrical energy replenishment when the range is insufficient.In this way,a multi-objective collaborative optimization model with node constraints,capacity constraints and range constraints are established with the objective of minimizing the number of power changes and the shortest total vehicle path,and the model is solved using a simulated annealing algorithm.Finally,the feasibility and validity of the model built in this thesis are verified by an example analysis in the background of the slag removal task of a line construction of Xuzhou metro by slag transportation company A,which is responsible for the construction of a line.