1. 501J CE/TTI Building, Zachry Department of Civil Engineering, College of Engineering, Texas A&M University, 3136 TAMU, College Station, TX 77843-3136
2. College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
3. 501D CE/TTI Building, Zachry Department of Civil Engineering, College of Engineering, Texas A&M University, 3136 TAMU, College Station, TX 77843-3136