School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China;
School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China;
School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China;
School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China;
School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA;
School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China;