Cvp analysis has several limitations , for example , it assumes that volume is the only cost driver and that all cost - volume - profit relationships are linear over the relevant range of activi ? ty 本量利分析有幾個限制條件,例如,他假定數(shù)量是唯一的成本動因,所有的本量利關(guān)系在相關(guān)范圍內(nèi)都是線性的。
Correlative function method and variable function method are used to calculate the relevant range of soil layer . the limit capacity of bored pile is determined by the cone penetration tests ( cpt ) and the static loading tests and related statistics parameters are also evaluated . considering the effects of group piles , the action effect is calculated by the settlement of pile foundation and the reliability index of single pile as well as group piles is determined by monte - carlo method 本文選擇臨近場地的四座高層建筑地基的全部勘測資料,以沿深度方向的一維平穩(wěn)高斯隨機場作為樁基土層土性參數(shù)的數(shù)學模型,利用相關(guān)函數(shù)法和變異函數(shù)法計算土層的相關(guān)范圍,由cpt和靜載試驗結(jié)果綜合確定鉆孔灌注樁的極限承載力,進而對相同場地各試樁的承載力進行折算后檢驗其概率分布,并估計有關(guān)統(tǒng)計參數(shù):考慮群樁效應確定樁基承載力,由樁基沉降反算其作用效應,由monte - carlo方法計算單樁及群樁的可靠指標。