1. Department of Civil and Environmental Engineering, University of California, Los Angeles, CA 90095, USA
2. Texas Advanced Computing Center, University of Texas at Austin, Austin, TX 78758, USA
3. California High-Speed Rail Authority, 770 L Street, Sacramento, CA 95814, USA
4. College of Civil Engineering, Zhejiang University of Technology, Liuhe Rd. 288, Xihu District, Hangzhou 310023, China