Yongjian Liu is a professor in the School of Civil Engineering, Chongqing University and School of Highways, Chang'an University, China. He is the Director of Large Structures Highway Safety Engineering Research Center at the Ministry of Education. He is an active researcher in the areas of steel and composite bridges, especially concrete-filled steel tubular bridgesXuhong Zhou is a professor in the School of Civil Engineering, Chongqing University, China. He has been elected as the Academician of the Chinese Academy of Engineering and Foreign Fellow of the Engineering Academy of Japan. He has been severed as President of Chongqing University, Director of Research Center of Steel Structures in Chongqing University, Vice President of China Steel Construction Society, Director of Technical Committee of the National Engineering Research Center for Steel Construction and Chief Editor of Journal of Architecture and Civil Engineering. He is an active researcher in the areas of steel and composite structuresDr Lei Jiang is an Associate Professor at Chang'an University in China. His research interests include: steel and composite bridges; high-performance bridge structures; accelerated bridge construction; and fatigue assessment of bridges