Study On The Optimization Of Intermodal Container Transportation Routes Between China And Europe Considering Node Relocation

With the construction of the new development pattern of "domestic and international double circulation" and the continuous progress of the construction of the "the Belt and Road",China’s foreign trade in goods has continued to rank first in the world since 2013.The construction of the "the Belt and Road" has effectively connected the domestic and international markets,and greatly promoted the trade between China and countries along the Belt and Road.The trade between China and Europe continues to grow steadily,and there is a good opportunity for the development of container multimodal transportation business between China and Europe.Multiple transportation channels are competing for development.But at the same time,in order to compete for the supply of goods,blind competition between channels;due to transport capacity constraints,node congestion and waiting are serious,transport time is uncertain;and total carbon emissions are huge,leading to increasingly prominent climate and environmental problems,which seriously affect the realization of the goal of "peak carbon dioxide emissions and carbon neutrality".Many bottlenecks seriously constrain the development of the China Europe container transportation industry,posing new and more scientific development requirements for the multimodal transportation industry.Breaking through these bottlenecks,optimizing multimodal transportation paths,effectively controlling carbon emissions from various transportation modes,and seeking reasonable transportation solutions are of great significance.The thesis is based on the perspective of multimodal transport operators,elaborated on the concept,characteristics,network composition,business processes,and container node operations of China Europe container multimodal transportation,investigate and study the current situation and operational organization processes of the three major container transportation channels between China and Europe,namely China Europe Shipping,China Europe Express,and China Europe Land Sea Express,analyze the cost,time,and carbon emission factors affecting the optimization of China Europe container multimodal transportation routes from the stages of in transit transportation and node reloading.On this basis,taking time as a constraint condition,a multi-objective path optimization model is established with the objective function of minimizing cost and carbon emissions,taking into account the uncertain waiting time for node reloading and the impact of fixed train and liner schedules on multimodal transportation path optimization.Under different time constraints,the NSGA-II algorithm was used to solve the model,and an example of "Shijiazhuang Berlin" container cargos was provided.In addition,the results of multiple runs on three aspects: no time constraints,cost single objectives,and no consideration of loading waiting time were compared and analyzed with the model results in this thesis,demonstrating the rationality,scientificity,and adaptability of the model in diverse transportation situations,providing more scientific decision-making solutions for multimodal transport operators.