Innovation and Practice of Loess Engineering Technology for Zhengzhou-Xi'an High Speed Line

摘要

Collapsible loess foundation is the most complicated foundation type in foundation works. The ZhengzhouXi'an High Speed Line is China's first High Speed Line (35Okm/h) constructed in collapsible loess areas. During construction of the project, we carried out large-scale field test and research, learned the loess distribution rules and features in stratum structure along the railway line, studied the characteristics in generation process of the pile side negative friction during soaking of the bored concrete pile in collapsible loess and the development and changing features of such friction, and determined the treatment measures, construction processes and quality inspection methods for collapsible loess foundation in a scientific manner.