Development of new rotation pile technology mirai pile ® and preliminary study in Vietnam on construction

Abstract

In recent years sustainability and environmental impacts have been highlighted as an important issue in design and construction particularly in urban area in construction of buildings and bridges. Mirai piler (M-pile) is new rotating pile technology, which was developed in 2020, is highly appreciated for its environmentally friendly functions such as: rapid construction, low noise; low vibration; no waste soil during construction; no ground water contamination. In this study, construction sequence and prediction of axial bearing capacity of M-pile on cohesive soil were introduced. M-pile analysis used with outer diameter of 318.5mm and thickness of 12.7mm. The analysis results show that the ultimate bearing capacity prediction of M-pilein soft clay soil considerablyincrease compared with bored and cast-in-place piles with the same diameter and depth thanks to multipleblades welded along the pile shaft.