针对国内外自动化集装箱码头缺乏标准化顶层设计、标准需求不明确的问题,开展自动化集装箱码头标准体系研究及其适用性评价.首先,在总结国内外自动化集装箱码头标准化现状的基础上,提出了自动化集装箱码头标准体系构建的原则和方案类型;其次,参考已有相关标准体系架构,基于霍尔三维结构理论,构建了自动化集装箱码头标准体系框架,并提出了标准需求方向;最后,采用模糊综合评价法对标准体系进行量化评价.结果表明,该标准体系的综合评价值为8.783,总体上对自动化集装箱码头的实际发展具有良好支撑作用.根据体系分项评价分值,提出了体系优化和后续标准制定建议,为交通运输其他领域标准体系构建和评价提供案例参考.

介绍了变频器在32T门机皮带驱动方式改造中的应用,阐述了变频器容量的计算方式和型式的选择方法,并说明了皮带机变频控制调速系统的原理.

The high-rise building has complex structure,large volume and quality,the most building foundation have enough strength and can bear load.The system of High-rise building is diversity,and function is complex,its installation amount is large,standard is precise high.This paper on the basis of the construction features of the high-rise building simple discusses common problems and resolving measures in layer construction progress plan and control.

This paper analyses the reasons of often crecked weld of the steel structure in the main jib of the gantry crane,and puts forward a solving plan. By perfecting the control procedure,the force flow produced in the steel structure has be improved and the hidden trouble of the equipment has been eliminated.

Using DFT(B3LYP) method,the reaction mechanisms of C,N,O atom in CH_3NO_2 with H radical were studied systematically.The geometries of the reactants,the transition states,the intermediates and the products were completely optimized at the basis set level of 6-311G~(**),6-311++G~(**) and cc-pvtz.The geometrid change of reacting molecules along the MEP were discussed.Base on the reaction barriers data,the reactive possibility of every reaction process were construed.