1. Professor, College of Water Conservancy and Environment Engineering, Zhengzhou Univ., 100 Science Rd., Zhengzhou City 450001, China.
2. Ph.D., College of Water Conservancy and Environment Engineering, Zhengzhou Univ., 100 Science Rd., Zhengzhou City 450001, China (corresponding author).
3. Engineer, Henan Provincial Academy of Building Research, 4 Fengle Rd., Zhengzhou City 450003, China.