带缆桩系缆模式及强度校核原则分析

Bollard's Mooring Fashion and Strength Analysis Principle

带缆桩用于系缆或拖缆,自身需要足够的强度。系缆方式和系缆习惯,决定了带缆桩的负荷。以双柱带缆桩为例,对"8"字系缆模式、绳圈系缆模式等多种系缆模式进行比较,获得各模式下带缆桩负荷情况,深入剖析带缆桩负荷的力学特点,以评判系缆模式是否合理适用。多种系缆模式下,对带缆桩强度校核原则的适应性进行分析,着重阐明带缆桩最大剪切应力计算公式可直接作为带缆桩强度校核准则。

Bollards are used for mooring and towing and should be with enough strength.Bollard’s working fashion and mooring habit determine the load on the bollard.Taking double bollards as an example,several mooring fashions were compared like figure-of-eight fashion(rope belayed in a figure-of-eight fashion)and rope-eye fashion(with a rope eye dropped over one of the posts).The loads from all kinds of fashions were obtained and a deep research on the mechanical characteristics was carried out so as to testify if the mooring fashions were reasonable.Under different mooring fashions,the adaption of strength check principle was anaylzed,coming to a conclusion that the formula for max shear stress could be directly used as bollard’s strength analysis.