菱形式风电运维生活平台锚泊系统设计研究

海洋平台需要通过锚泊系统长期锚泊于使用固定地点，来削弱外部环境载荷的作用。针对菱形式风电运维生活平台特点及黄海海域特定的海洋环境，根据设计要求，对菱形平台锚泊系统选型，分析环境载荷，提出四种系泊布置方案，给出四种系泊布置方案导缆孔位置坐标，运用静力分析的方法确定锚泊参数，得出四种方案锚固点位置，初步确定两种锚泊系统方案，对初定的两种方案锚泊线张力进行研究，最后统计分析校核锚泊线张力以得到最终的锚泊方案。并提出锚泊系统设计进一步的优化方法，为今后相关平台锚泊系统的设计提供理论依据。     

Green approaches at sea – The benefits of adjusting speed instead of anchoring

In this paper, the concept ‘green approaches’ already used in aviation is applied to cargo transportation at sea. Instead of anchoring outside a port waiting for berth, ships can adjust their speed to arrive just in time for berthing. With improved incentives for reducing speed and shared information about berthing times, green approaches instead of anchoring can be a way to reduce fuel consumption and emissions without increasing the transit times of goods. The present study estimates the benefits to society as a whole for the EU ports in the Baltic Sea with Automatic Identification System data applying a new method using data collected in real time. Data consists of all anchored ships awaiting berth on 40 different occasions in 2015 and are subsequently extrapolated to a year. Fuel consumption by the individual ships, emissions and values are calculated from the detailed data with established models and estimates of unit values. The potential benefits are estimated at 27 million euros per year in the scenario where the near 15,000 anchorings by ships annually awaiting berth may instead start a green approach 12 h prior to arrival and may reduce speed by 25%, using the middle unit values for fuel and emissions. The methodology used in the paper can be applied to estimate the benefits of green approaches in other areas with anchored vessels.     

用区域模拟方法评估舰艇火灾危险性

将火灾区域模拟方法运用到舰船舱室火灾分析中，建立了全船各舱室的区域模拟模型，进行了模拟计算；根据火灾形成和蔓延的机制，确定了火灾蔓延判据．进行了全船火灾危险等级划分；在舱室区域模拟的基础上，应用模拟试验的方法，针对不同武器攻击情况，根据火灾蔓延判据和危险等级划分，编制了全船综合性评估程序，对全船火灾危险性进行评估．     

锚泊中船舶卧底链长的一种估算方法

为了从定量上掌握锚泊船卧底锚链的长度 ,保证锚泊安全 ,本文根据锚链悬链线特殊性质 ,提出了在出链长度一定的情况下估算卧底链长的一种简易方法 ,即根据锚链在锚链筒外孔处与铅垂线的夹角来估算卧底链长的方法 ,并对估算误差作了简要分析。分析表明 ,当锚链张角 <5 0°时 ,误差较小 ;当锚链张角 >6 0°时 ,误差偏大 ,但仍可满足航海实践需要     

Judicial Interpretations of Federal Consistency under the Coastal Zone Management Act

The federal consistency provision of the Coastal Zone Management Act (1972) created a new form of interaction between federal and state governments. The implementation of this provision has significant ramifications for coastal management and intergovernmental cooperation in the United States. Past studies have focused on the provision's implementation patterns among U.S. coastal states and federal-state disputes mediated by the Secretary of Commerce. This supplemental article examines judicial interpretations of the federal consistency provision over the past two decades in relation to major issues deliberated by Congress at the time of enactment. Recent changes in the provision, as well as those unresolved issues likely to resurface in future litigation, are also discussed. Seemingly, coastal land use authority and offshore energy exploration remain the most contentious issues surrounding the federal consistency provision.     

沈阳地铁一号线无人自动折返方案

介绍了沈阳地铁一号线无人自动折返的工程概况、需求分析、实现方案以及折返过程。     

区域控制器仿真子系统的研究

对基于WLAN的CBTC列控系统仿真平台中的区域控制器仿真子系统进行了研究,介绍了区域控制器的基本原理,描述了关键功能的实现,如列车管理、移动授权生成、区域控制器交接、数据库的建立与调入等。基于C++Builder 6.0实现了仿真子系统的功能。     

软弱围岩浅埋隧道全长黏结砂浆与水泥基药卷锚杆的锚固效果对比研究

铁路隧道锚杆主要有2种锚固方式:全长黏结砂浆和水泥基药卷,前者施工质量较好,可加固杆体周围岩体,后者施工简便,能快速发挥作用,在现有施工工艺的前提下,为了比较全长砂浆与水泥基药卷这2种锚固剂在浅埋软弱破碎围岩中的锚固效果,以郑万高铁许良隧道为依托工程,采用现场试验的方法对全长砂浆锚杆与水泥基药卷锚杆的锚固效果问题进行研究,选取Ⅴ级围岩段分别设置全长砂浆锚杆段50m与水泥基药卷锚杆段50m进行对比试验,且改善了全长砂浆锚杆注浆工艺,使其注浆密实度达到90%。对比试验的项目有:锚杆轴力、初支钢架应力、喷混凝土应力、水平收敛和拱顶沉降。现场实测结果表明:全长砂浆段的拱顶沉降和净空收敛在边墙锚杆施做后得到了更好的控制,得益于注浆工艺的先进性及后期强度的迅速提高,全长砂浆锚杆受力较大,且使喷射混凝土和钢架受力较均匀。相比之下,水泥基药卷段的围岩变形持续发展,受限于锚固质量及后期强度的不足,水泥基药卷锚杆受力较小,导致喷射混凝土和钢架承担较大部分的围岩压力,且不均匀。结论:在当前施工工艺和地质条件下全长黏结砂浆锚杆锚固效果较好。     

南沙港发展现状及对策探讨

广州南沙港区的发展建设,对广州市南拓发展战略实施具有特别重要的作用.从区位条件,硬件设备等方面,南沙港区具备建设保税港区的优势.在南山港发展存在问题分析的基础上,提出了加快配套设施建设,完善珠三角港口群功能等对策建议.