Analysis of Settlement Influence Parameters of Rigid Composite Foundation Based on Additional Stress Method
In view of the lack of analysis of influencing factors of settlement of rigid pile composite foundation in existing literatures,the influence rules of foundation soil,rigid pile,embankment and other factors on settlement,neutral surface depth,negative friction,etc.was analyzed,based on the additional stress method of rigid pile composite foundation.The results show that the settlement of the reinforced area increases gradually with the compression modulus of silty clay,the thickness of working cushion and the side resistance of working cushion.The depth of neutral surface increases gradually with the thickness of working cushion,but decreases gradually with the side resistance of working cushion.The negative friction increases gradually with the thickness of the working cushion and the side resistance of the working cushion.The settlement in the reinforced area increases gradually with the ultimate resistance of the pile end soil,the total ultimate resistance and the ultimate bearing capacity of single pile.Compared with the opening condition,when the pile end is closed,the pile end resistance is larger,the single pile bearing capacity is higher,and the settlement of the reinforced area is smaller.The settlement of the reinforced area increases gradually with embankment height,embankment filling weight,embankment top width and embankment side slope ratio.The depth of the neutral surface and the negative friction force also show an increasing trend.The research results can provide some reference for the design and calculation of rigid pile composite foundation.
rigid-pilecomposite foundationinfluencing factorsettlement in reinforced areasuperimposed stress method
万方数据
维普
