非对称异型沉箱浮游稳定计算

Floating stability calculation of asymmetrical special shaped caisson

针对非对称异型沉箱浮游稳定计算的难题,首先对任意形状的浮游物体浮心进行了理论推导;然后根据异型沉箱的结构特点,调整沉箱的压载,使浮心在浸水面上的投影与浸水面的形心重合;再通过转轴公式,找到浸水面的形心主惯性矩。此时,就可以将对称沉箱浮游稳定计算理论推广至非对称异型沉箱。通过一系列分析及现场实操,证明理论计算与实际结果基本一致,为非对称异型沉箱的浮游稳定计算提供了一种通用方法。

To deal with the floating stability calculation problem of asymmetrical special shaped caisson,firstly,the floating center of arbitrary floating body is theoretically deduced;secondly,according to the structural characteristics of the special shaped caisson,the ballast of the caisson is adjusted so that the projection of the floating center on the immersed surface coincides with the centroid of the immersed surface;thirdly,by using the formula of rotation axis,the principal moment of inertia of the center of gravity of the immersed water surface is found.At this time,the theory of floating stability of symmetrical caissons can be extended to that of asymmetrical special caissons.Through a series of analysis and field operation,it is proved that the theoretical calculation is basically consistent with the actual results,which provides a general method for the floating stability calculation of asymmetric special-shaped caissons.