Study on the Earth Pressure during Sinking Stage of Super Large Caisson Foundation

End resistance is a dominant variable in the sinking process of super-sized caisson foundation, which great importance to safe foundation. Based on soil excavation super large foundation main tower Changtai Yangtze River Bridge, distribution characteristics and variation earth pressure under foot blade was analyzed using 3D finite element method at first stage excavation. Furthermore, monitored real time during order analyze influence pressure. The analysis results engineering practice showed that from inner area outer area, end bulkhead partition walls decreased, while gradually increased till reached failure state area. can really reflect overall stress helps guide by