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本文建立了某起重船起重结构的有限元模型。通过有限元计算,在其建造和结构强度测试之前,初步核算其结构的强度能否满足作业的要求,为结构设计提供参考。本文介绍的计算,可供起重船设计人员在设计起重船结构时参考使用。 相似文献
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2010年10月20日,由江苏省船舶设计研究所有限公司设计、中船江南重工股份有限公司总承包、浙江泰通船舶有限公司负责主船体建造的2500t单臂架起重船“上船浮吊5号”,正式交付船东上海船厂船舶有限公司并举行了交船仪式。2500t起重船为一艘钢质、非自航、非旋转、可变幅的大型浮式起重船,在船首设有起吊能力为2500t的单臂架桁架式起重机构。 相似文献
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鉴于深水铺管起重船"海洋石油201"船是中国首艘3 000 m深水铺管起重船,设计和建造难度大,在分析深水铺管起重船结构特点的基础上,着重对总体建造、焊接、精度控制技术进行研究。首先,应根据结构特点划分分段/总段,提高预舾装率;其次,托管架的焊接工艺是本船焊接的核心工艺,其安装精度的好坏直接影响铺管的功能;最后,通过制定合理的布置方案,加强过程控制,总组工具和工装优化,引入全站仪和三维模拟软件,实现精度管理。 相似文献
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2006年3月15日,由浙江造船有限公司为世界上最长的跨海大桥——杭州湾跨海大桥量身定做的“天一号”起重船在杭州交付。“天一号”起重船是中铁大格局集团公司委托浙江造船有限公司建造的特殊水上施工架粱工作船,是专为杭州湾跨海大桥桥梁构架运输和施工安装而设计的。该船最大起重能力3000t,起重能力目前居世界第二,亚洲第一,仅次于芬兰的“天鹅”号起重船。 相似文献
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Installation complexities are one of the major challenges in the floating offshore wind turbine (OWT) industry. The modern concept introduced by the SFI-MOVE project is an effort to overcome the complexities by utilizing a low-height lifting mechanism. It is common to idealize a crane in the lifting mechanism as a rigid body since the structural deflections are smaller than the responses introduced by the other system components. However, structural flexibility can play an essential role in demanding offshore operations with smaller acceptable tolerances. In this study, lifting cranes are modeled using the finite element method and simplified by implementing equivalent 3D beam elements. Dynamic analysis is performed for various environmental conditions, and the responses of the crane structure and the OWT are calculated for each load case. This research reveals that crane structure flexibility influences the relative motion between a floating spar buoy and an OWT during mating operations. Crane structural flexibility contributes significantly to the OWT rotations. In addition, the response deviation between using rigid and flexible cranes increases as the excitation force increases. Therefore, it is recommended to consider the crane structural flexibility in the calculation when strict installation tolerances are needed. 相似文献
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This study looks at the degrees of interference for multiple cranes that work simultaneously at six major container terminals in the port of Kaohsiung. The results confirm that there are different degrees of mutual crane interference among terminals where different operational modes are adapted in the container yards. RTG handling systems show a very high value of aggregate cranes exponent f , with nearly no interference, as long as the number of allocated cranes is no more than the number of truck lanes under each crane. While SC systems reveal a relatively larger degree of mutual interference as the number of cranes increase. 相似文献
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This study looks at the degrees of interference for multiple cranes that work simultaneously at six major container terminals in the port of Kaohsiung. The results confirm that there are different degrees of mutual crane interference among terminals where different operational modes are adapted in the container yards. RTG handling systems show a very high value of aggregate cranes exponent f, with nearly no interference, as long as the number of allocated cranes is no more than the number of truck lanes under each crane. While SC systems reveal a relatively larger degree of mutual interference as the number of cranes increase. 相似文献
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为应对集装箱船舶的日益大型化趋势,集装箱码头需不断购置新型岸桥(QC)、场桥(RMG或RTG)、跨运车(SC)、内拖车(YT),不断提高装卸效率以满足船公司的作业要求,随着码头设备、人员数量的不断增加,码头操作环境也日益复杂,如果不能及时有效地管理好人/机安全,极易发生人员伤亡和机械损坏等安全事故。2010年6月,中远正式接管希腊比雷埃夫斯集装箱码头公司(PCT),在中远集团的安全理念的指导下,PCT迅速建立了三级安全管理架构,严格按照国际劳工组织(ILO)的《码头安全和健康》(Safety and Health in Ports)指导原则以及欧盟和希腊有关保障码头生产安全和员工健康的法律、法规,结合PCT实际情况有效实施了各项加强生产安全和员工健康的措施,切实保障了PCT 的生产安全和员工健康。四年来,尽管PCT的操作量和操作效率屡创新高,但生产安全形势始终保持良好。该公司副总经理孙凯根据自己在希腊集装箱码头从事安全生产管理的经验,从国际、欧盟和希腊有关码头安全生产管理法律法规的解读、码头安全生产管理架构的建立、码头人/机安全保障规则的要点以及PCT有效进行安全生产管理的主要经验等方面加以阐述,以期为国内外其它码头的生产安全管理提供参考。 相似文献
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为了提高生产效率,港口装卸机械趋向大型化发展。大型起重机械选用低压660V供电,可有效节省配电电缆的投资,与10kV高压供电相比也可降低安全防护和维护管理的难度,是一个可行的解决方案。 相似文献
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多功能浮动港属于最近国内外开展研究的海上大型浮体概念。作为一个新的海上建造装置,其在法规和应用方面还处在完善和研发阶段,环保和可持续发展是这类装置的重点研究方向,本文以国内某浮动港的污水处理课题为例,对这类装置的污水处理方案进行深入分析和介绍。 相似文献