Behaviour and Analysis of A Large-Scale Cylindrical Earth Retaining Structure

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A cylindrical earth retaining wall 144 m in diameter was adopted for the excavation works of a 500 kV large-scale underground substation building. Various in-situ measurements, which comprised approximately 1,100 measuring points, were carried out throughout the excavation works. Following the examination of the measured data, it was ascertained that the retaining wall behaviour was largely influenced by wall temperature variations in addition to lateral pressures. This paper presents the earth retaining wall behaviours based on the measurement results and the practical analysis methods by introducing the retaining wall temperature variations.