Hao Pu is a professor with Railway Engineering Department, School of Civil Engineering, Central South University. He is the author of four books and more than fifty articles. His research interests include computer-aided design of road and railway, network-based three-dimensional simulation and visualization, virtual reality, road and railway alignment optimization, and network-based visualization for operation and management of mechanical and electrical equipment. He is the chairman of the Digital Construction Department in National Engineering Laboratory for High Speed Railway Construction Technology and Vice-chairman of the Alignment Department in China Railway Society Paul Schonfeld has been a Professor in the Department of Civil and Environment Engineering, University of Maryland, since 1993. He has experience in analyzing various transportation systems, including railroads and rail transit systems, road networks and traffic management systems, freight logistics, inland waterways and airports. He has published over 240 journal papers and served as Editor of the Journal of Advanced Transportation and ASCE's Journal of Transportation Engineering. He is a Fellow of ASCE and ITE Dr Li is an Associate Professor in the Railway Engineering Department, School of Civil and Architecture, Central South University. His research interest includes computer-aided design of road and railway, optimization of road and railway alignment, building information modeling, network-based three-dimensional simulation and visualization, virtual reality and network-based visualization for operation and management of mechanical and electrical equipment Dr Song is an Associate Professor in the Railway Engineering Department, School of Civil and Architecture, Central South University focusing on railway engineering. His research interests include railway and road alignment optimization and artificial intelligence Dr Hong Zhang is a lecturer in the School of Civil Engineering and Architecture, East China Jiao Tong University, Nanchang in China. His current interests include road and railway alignment optimization and artificial intelligence

• 1. Introduction2. Literature review3. Comprehensive geographic information model4. Optimization of railway major technical standards5. Economic optimization model of railway alignment6. Geological railway alignment optimization model7. Environmental railway alignment optimization model8. Intelligent search algorithms for railway corridors9. Intelligent search algorithms for 3D railway alignments10. Concurrent optimization of railway alignments, stations, and large temporary engineering projects11. Optimization models and algorithms for intelligent reconstruction and renovation of existing railway alignments12. Future work

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