Complex navigation hub is a complex navigation facility composed of multiple locks,ship lifts,navigation tunnels and intermediate channels and other navigation buildings,the intermediate channel,as a key water connecting different navigation facilities,undertakes the function of ship collection,channelization and temporary berthing,the capacity configuration of its intermediate channel rendezvous section is of great significance for enhancing the overall passing ability of the hub.In response to the problem of mismatch between the capacity configuration of the middle channel rendezvous section and the through capacity of the complex navigation hub,taking the Goupipan navigation hub of Wujiang River as the research object,a simulation model of the complex navigation hub is constructed using Arena simulation platform.Through simulation experiments and data analysis,the influence of the capacity of the middle channel rendezvous section on the through capacity of the hub and the waiting time of ships is explored under different daily opening time of the hub.The results show that by reasonably adjusting the capacity of the middle channel rendezvous section based on the opening operation time of the hub,the throughput capacity of the hub can be improved and the waiting time of upstream and downstream ships at the hub can be reduced.After optimization,Goupitan navigation hub can increase its freight throughput by up to 13.9% and reduce the average waiting time of upstream and downstream ships at the hub by 13.6%.The research results can provide theoretical and technical support for the design and operation of the middle channel rendezvous section capacity of complex navigation hubs.