Figure 2
The radial railway network is centered on four vertically arranged nodes labeled “1. Nanchang Conventional Yard”, “2. Nanchang E M U Yard”, “3. Nanchang West Intercity Yard”, and “4. Nanchang West High-Speed Yard”. These four nodes are positioned within dashed circular boundaries and are connected by multiple lines to outer directional nodes labeled from “5” to “13”. At the top right, a node is labeled “5. Direction to Shanghai (Hukun High-Speed Railway, Upward)”. Two lines extend from this node: one labeled “(13.2, beta (1) multiplied by 220)” connects to “2. Nanchang E M U Yard”, and another labeled “(6.19, 400)” connects to “4. Nanchang West High-Speed Yard”. Adjacent to it, a node labeled “6. Direction to Shanghai (Hukun Conventional Railway, Upward)” connects to “1. Nanchang Conventional Yard” via a line labeled “(20.5, beta (2) multiplied by 220)”. On the right side, a node labeled “7. Direction to Fuzhou (Chang-Fu Railway)” has three connections: a line labeled “(25.25, beta (3) multiplied by 220)” connects to “1. Nanchang Conventional Yard”, a line labeled “(25.25, beta (4) multiplied by 220)” connects to “2. Nanchang E M U Yard”, and a line labeled “(13.47, 240)” connects to “3. Nanchang West Intercity Yard”. Below it, a node labeled “8. Direction to Shenzhen (Beijing-Kowloon Railway, Downward)” connects to “1. Nanchang Conventional Yard” via a line labeled “(25.255, beta (5) multiplied by 220)”. Further below, a node labeled “9. Direction to Changsha (Hukun Railway, Downward)” connects to “1. Nanchang Conventional Yard” via a line labeled “(25.25, beta (6) multiplied by 220)”. At the bottom right, a node labeled “10. Direction to Shenzhen (Beijing-Hong Kong High-Speed Railway)” has two connections: a line labeled “(9.75, beta (7) multiplied by 210)” connects to “2. Nanchang E M U Yard”, and a line labeled “(6.67, 240)” connects to “3. Nanchang West Intercity Yard”. On the bottom left, a node labeled “13. Direction to Kunming (Hukun High-Speed Railway, Downward)” has two connections: a line labeled “(2.07, 400)” connects to “4. Nanchang West High-Speed Yard”, and a line labeled “(3, 400)” connects to “3. Nanchang West Intercity Yard”. On the left side, a node labeled “12. Direction to Jiujiang (Changjiu Intercity Railway)” has three connections: a line labeled “(21.6, alpha (2) multiplied by 220)” connects to “1. Nanchang Conventional Yard”, a line labeled “(21.6, alpha (4) multiplied by 220)” connects to “2. Nanchang E M U Yard”, and a line labeled “(9.37, 225)” connects to “3. Nanchang West Intercity Yard”. At the top left, a node labeled “11. Direction to Beijing (Beijing-Kowloon Railway, Upward)” connects to “1. Nanchang Conventional Yard” via a line labeled “(21.6, alpha (1) multiplied by 220)”. The nodes “5” to “13” are arranged in a clockwise manner along the outer dashed boundary.Topological diagram of Nanchang hub. Source(s): Authors' own work