【摘要】 采用简化毕肖普(Bishop)法,对干坞边坡各阶段的稳定性进行了计算分析,计算结果表明,稳定系数Fs在干坞施工及使用各阶段呈先增加后减小的变化规律。基于干坞边坡施工现场监测数据,分析研究了边坡坡顶水平位移的变化规律,得出坡顶水平位移在干坞开挖阶段呈直线变化,而在使用阶段呈自然对数变化的规律,且施工开挖阶段的位移约占总位移的2/3;建议用边坡变形角点效应比Rc来描述边坡变形随空间的变化规律。建立了边坡变形的经验公式,该公式为时间T和角点效应比Rc的函数。更多还原

【Abstract】 The stability of dry-dock slope is calculated by simplified Bishop method. The results show that Fs is increased firstly and then decreased. Based on measured data,the horizontal deformation of slope top is changed linearly during excavation stage while logarithmically in service stage,and the deformation during excavation stage is 2/3 of the total deformation. The corner effect ratio Rc is suggested to describe the deformation distribution law changed with space. At last a formula is established to calculate deformation based on Rc and time T.更多还原