济南纬六路跨铁路特大桥索道管的定位测量

以济南纬六路跨铁路特大桥为例，介绍斜拉桥主塔索道管的定位原理、施工放样方法、施测过程及精度分析。     

Timing sequence changes of landscape plants in Shanghai Area,China

Based on published reports and direct observation, the common resources of landscape plant species in the Shanghai area were identified and studied in terms of the landscape characteristics of timing sequence changes over a one year time period. The results showed that there were 199 common landscape plant species in Shanghai, distributed in 67 families and 129 genera. These plants were categorized by three ornamental characteristics: flowers, foliage and fruits. The species were thus further analyzed according to the time periods which these characteristics were present. The results showed that flower ornamental distributed throughout the year, particularly from April to June, and plant species with colorful foliage could be seen every month, and particularly in November and December. On the other hand, few plant species with fruit ornamentals were observed in Shanghai area. The diversity of landscape timing sequence changes of the 199 plant species under examination was then analyzed by using the Shannon-Weiner and Simpson index formulas. The results showed that the higher diversity was observed in January, February and from August to October, while the lowest diversity was recorded from March to July and during November and December. The diversity of landscape characteristics of these plants was ranked according to foliage, flowers and fruit. Using this method, one park and one plant community were selected to evaluate the advantages and disadvantages of their time-changing plant landscape, with the goal of assessing the validity of the chosen ranking method. These results in the present study would be helpful to evaluate the plant landscape in a specified space and further enrich the diversity of plant and landscape by a target-oriented way.     

高速铁路运输组织相关问题的研究

在分析客流类型与两线分工、跨线客流方案技术经济比较的基础上,提出了高速铁路跨线客流的运输组织方案,探讨了跨线列车的运行范围、高速铁路车站设置原则与合理站间距离,分析了高速铁路区间通过能力的特点,并提出了基于不同要求、不同时段高速铁路通过能力的计算与表达的建议.     

全景采集技术在外业调查中的应用探讨

基于贵州特有的气候条件,分析开展地理国情普查项目外业调绘工作中存在的难点问题,提出采用全景采集技术提高作业效率的方法。利用高清鱼眼运动相机GoPro,在天气好的情况下拍摄所有公路两旁的影像,采用自编分组软件及EPS调用程序,实现场景重现,经实践检验该技术能够提高外业调绘进度,并能够保证调绘质量。     

基于仿真计算的内锥轴孔过盈配合压装补偿优化

某大功率机车牵引电机采用典型的小齿轮与内锥轴孔装配的传动结构,因制造过程中内锥轴孔存在微小的形变,小齿轮压装中无法准确确定P0位置,造成压装后实际过盈量与理论过盈量的偏差,文章将从内锥轴孔的形变影响仿真、P0值的偏差计算,提供压装补偿依据,解决小齿轮与内锥轴孔压装量偏差的问题.     

简论工程投产期堆场轨道地基变形监测与评价

本文介绍了黄骅港矿石码头一期工程堆取料机轨道基础投产后的深层测斜、轨顶沉降、轨顶位移等变形监测情况,通过分析监测结果并与设计阶段理论计算对比,分析了本工程堆场、轨道基础的使用安全性,对类似工程设计提供参考意义。     

关于降低列尾设备故障率的探讨

分析了列车尾部安全防护装置在使用过程中存在的一些问题及其产生的原因，并针对性地提出了控制措施，以提高设备质量。     

车用风力发电机及汽车混合动力机组的研究

一、汽车风能的性质 众所周知，风阻是存在于汽车行驶过程中的一种不以人的意志为转移的自然现象，汽车风能源是一种存量巨大的自然资源。     

客运专线运输组织若干问题的探讨

对铁路客运专线的跨线客流运输组织的基本类型、客运专线的区间通过能力计算及合理利用等若干问题进行了探讨,并对我国客运专线运输组织模式的选择提出建议。     

武汉天兴洲公铁两用长江大桥钢梁散拼节段与整节段匹配测量技术

武汉天兴洲公铁两用长江大桥墩顶散拼节段钢梁与整节段钢梁拼接前,通过精密测量工地现场已散拼的4节间钢梁和在工厂制作完成的整节段钢梁各主桁之间相对结构尺寸、轴线关系,为主塔墩顶4节间与首架整节段钢梁顺利拼装提供精确的测量数据.