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变截面柱采用两点起吊,吊点位置通常一点设在牛腿处,另一合理的吊点位置应以牛腿处吊点的负弯矩与跨中正弯矩绝对值相等的条件确定,计算简图如图1所示。
The variable cross-section column adopts two-point hoisting. The hoisting point is usually located at the bull’s leg. Another reasonable hoisting point location is determined by the condition that the negative bending moment of the hoisting point at the bull’s leg is equal to the absolute value of the positive bending moment at the mid-span. The diagram is shown in Figure 1.