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针对六股钢缆和螺旋式钢缆提出海洋工程系泊钢缆轴向破断载荷计算的新方法.以钢缆结构为基础建立钢缆轴向强度计算的力学模型并进行简化处理.因钢缆断丝引起强度缩减且无法确定其断点的准确位置,为此考虑内部钢丝摩擦力并通过对钢缆的断丝分布进行概率计算及给出钢丝分布概率模型,提供钢缆轴向破断载荷缩减的计算及分析过程.突破了规范法计算轴向强度缩减时对钢缆类型的限制.通过大量计算各种钢丝绳破断载荷,将统计结果同API规范强度公式计算结果及设计值进行对比,结果显示该算法精度及稳定性较好.
A new method for calculating the axial breaking load of marine engineering mooring steel cables is proposed for six types of steel cables and spiral steel cables.The mechanical model for calculating the axial strength of steel cables is established based on the structure of steel cables and the simplified processing is carried out.Because the steel cables Broken wire caused by strength reduction and can not determine the exact location of the breakpoint, in order to consider the friction of the internal wire and cable through the broken wire distribution probability calculation and given the wire distribution probability model to provide steel cable axial breaking load reduction The calculation and analysis process of the model is established.It breaks through the limitation of the cable type when the axial strength is reduced by the standard method.Comparing the results of the calculation with the API standard strength formula and the design value through a large number of calculation of the breaking load of various steel wire rope, The accuracy and stability of the algorithm is better.