Abstract：Under complex terrain and demanding geological conditions, high piers with deep foundations have become a key technical choice for expressway bridges to span obstacles such as gorges and rivers. The quality of substructure construction directly determines the safety, durability, and economic performance of the entire bridge. Faced with multiple challenges such as excessive pier height, deeply embedded foundations, variable geology, and environmental sensitivity, traditional construction methods reveal limitations in efficiency, precision, and risk control. Therefore, systematically researching and integrating advanced, reliable, and refined substructure construction technologies suitable for high-pier and deep-foundation conditions is of critical engineering significance and practical value for enhancing the overall construction level of expressway bridges in mountainous areas of China and ensuring the safety of major infrastructure lifelines.
常清 Qing Chang (Wed,) studied this question.