俞俊
YU Jun

• 1:天津大学建筑工程学院

摘要(Abstract)：

深海绷紧式系泊系统采用合成纤维缆绳作为系泊缆绳,由于材料属性和安装、使用等因素造成缆绳带损伤服役,因此有必要研究受损伤的缆绳在复杂海况下的非线性动力特性尤其是动刚度演变规律。详细介绍了国内首台合成纤维系缆循环加载试验系统,论述了终端所采用的缆绳插编方式,试样磨合处理的流程以及通过减小缆绳有效承载面积制造定量损伤的方法。对直径6 mm和8 mm的高相对分子质量高密度聚乙烯(HMPE)缆绳试样进行试验研究,验证了小比尺HMPE受损伤缆绳的动刚度模型试验可以反映大比尺HMPE受损伤缆绳的动刚度特性。分别考察了损伤度、平均载荷、应变幅值和循环周次对HMPE缆绳动刚度的影响,为今后更为复杂的全尺寸受损伤缆绳的动刚度研究提供了方法和依据。
Being a new-type mooring system applied for deep waters, synthetic fiber ropes are employed inthe taut-wire mooring system as main part of mooring lines. There are many factors which lead to the damage of synthetic fiber in the engineering application such as the material properties, installation, mooringservice, etc. Therefore, it is necessary to discuss the dynamic nonlinear properties of damaged synthetic fiber rope mooring lines in complicated ocean environment, especially the evolution of the dynamic stiffness.The details of a specially designed experimental system which can exert cycling loading on mooring linesare introduced. Moreover, the ways weaving socket termination, bedding-in and inflicting quantifiable damage on rope specimen by cutting yarns to reduce the effective bearing area of rope are expounded. Experiments are performed on the specimen of HMPE whose diameters ranged from 6 mm to 8 mm to prove thesimilarity law of model scale. Then the influence of the damage index parameter, the mean load, strain amplitude and loading cycles on dynamic stiffness are studied in detail. The results give some useful references to the later study on the behavior of damaged full-scale ropes including more sophisticated condition.

关键词(KeyWords)： 绷紧式系泊系统;高相对分子质量高密度聚乙烯;受损伤系缆;动刚度;插编式终端
taut-wire mooring system,HMPE,damaged mooring rope,dynamic stiffness,socket termination

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金创新研究群体科学基金资助项目(51321065)

作者(Author): 俞俊
YU Jun

DOI: 10.16090/j.cnki.hcxw.2015.04.007

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