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运用层次分析法对杭甬运河集装箱港口布局进行规划研究,通过对港口腹地经济环境、集疏运网络、港口资源、港口服务管理水平、港口地理位置和投资等因素的权重分析,得到了以杭州港区为杭甬运河的主枢纽港,宁波海河联运港区和绍兴港区为重要港口,萧山港区、柯桥港区、上虞港区和余姚港区为一般港口的布局方案,其中主枢纽港和重要港口应以建设集装箱专用码头为主,其余应建设多用途码头。其结果对杭甬运河集装箱运输的发展具有重要的参考意义。 相似文献
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在机场道面健康监测方面,国内外目前还没有可定量的、长期有效的监测方法。本文通过分析机场水泥混凝土道面的开裂机理、光纤传感器的传感原理,并与传统传感器进行比较,提出了机场水泥混凝土道面裂缝光纤传感器的设想,探讨了机场混凝土道面裂缝传感技术在未来的应用前景. 相似文献
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筒型基础是近年来在海上能源开发的主要基础形式之一.采用水动力分析软件MOSES建立了三筒型基础结构的数值分析模型,对不同吃水、不同水深以及不同筒位布置的水动力系数和幅频响应特性进行了研究.结果表明:吃水和筒间距对结构的水动力系数和运动响应的影响明显大于水深的影响,在结构设计中合理的筒位布置以及施工过程中调整吃水深度能够保证良好的运动响应特性. 相似文献
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When disruptions occur, the airlines have to recover from the disrupted schedule. The recovery usually consists of aircraft recovery, crew recovery and passengers’ recovery. This paper focuses on the integrated recovery, which means above-mentioned two or more recoveries are considered as a whole. Taking the minimization of the total cost of assignment, cancellation and delay as an objective, we present a more practical model, in which the maintenance and the union regulations are considered. Then we present a so-called iterative tree growing with node combination method. By aggregating nodes, the possibility of routings is greatly simplified, and the computation time is greatly decreased. By adjusting the consolidating range, the computation time can be controlled in a reasonable time. Finally, we use data from a main Chinese airline to test the algorithm. The experimental results show that this method could be used in the integrated recovery problem. 相似文献