浮桥锚纲卧链长度计算及锚定安全判别

Calculation of Floating Bridge Seabed Cable Length and Discriminate of Mooring Safety

针对锚纲悬链线的特点,建立了锚纲悬链线方程,根据锚纲是否存在卧链长度来判别自悬链和约束链的状况,先后引入了卧链长度参数K1和卧链长度无因次参数K2的概念,依托系留点锚纲垂直夹角分析得到卧链长度的计算公式,在考虑误差修正的基础上,提出了锚定安全性的判别条件,运用算例进行了验证,为浮桥锚定设计提供一定的技术支持。

For the characteristics of cable catenary, the cable catenary equation was established. According to the existence of seabed cable length, it can differentiate between nature catenary and constrained catenary. We introduced the concept of the seabed cable length parameter g1 and the seabed cable dimensionless parameter K2 and based on the analysis of the vertical angle of cable at the mooring point, the computing formula of seabed cable length was derived. In consideration of error correction, we put forward the discriminant conditions of mooring safety, which was verified by examples. The paper provides some technical support for the floating bridge mooring design.