Time-variant ultimate longitudinal strength of corroded bulk carriers

Many bulk carrier losses have been reported of late, and one of the possible causes of such casualties is thought to be the structural failure of aging hulls in rough weather. In aging ships, corrosion and fatigue cracks are the two most important factors affecting structural safety and integrity. This paper uses a set of the time-dependent corrosion wastage models for 23 different member locations/categories of bulk carriers previously developed by the authors, based on the available corrosion measurements for existing large bulk carrier structures. Differences due to the location and corrosion severity of every member type are taken into account. The nominal design corrosion values for the primary members are suggested based on the annualized corrosion rates obtained in the present study. The effect of time-variant corrosion wastage on the ultimate hull girder strength as well as the section moduli is studied. The criteria for repair and maintenance of heavily corroded structural members so as to keep the ultimate longitudinal strength at an acceptable level are discussed. Important insights and conclusions developed are summarized.     

老旧散货船营运缺陷与管理探讨

针对老旧散货船在营运中安全问题,阐述了加强老旧散货船的营运管理,做好安全防范,采取正确的管理措施是确保船舶营运安全的前提。重点探讨了老旧散货船的营运缺陷,分析了缺陷可能产生的后果,提出了营运中应采取的管理措施及建议。     

老龄散货船安全探讨

从散货船的受力特点、老龄散货船常见的损坏形式、老龄散货船在大风浪中的操纵、运输精矿粉、日常管理等几个方面来探讨一下老龄散货船的安全问题。     

谈对欧美PSC检查先进经验的借鉴

大量国外老旧、低标准船船涌入我国沿海和内河港口，给我国水域安全和环境带来严重威胁。为了从根苓上杜绝低标准船舶的危害，保证海上安全，保护海洋环境，使我国走向海事强国，我们有必要认真地研究和借鉴发达国家的经验，彻底将外籍低标准船舶拒于国门之外。     

沥再生TM在公路沥青路面养护中的应用与研究

通过对沥再生^TM材料进行一系列的试验研究,检验了沥青生^TM对老化沥青的激活再生效果,分析了沥再生^TM掺量、老化沥青老化程度及再生效果之间的关系,验证了沥再生^TM应用于沥青路面养护的可行性,通过对各种试验数据的综合分析,得出沥再生^TM的试验研究结论,为沥再生^TM在沥青路面养护中的实际应用提供数据支持。