谈谈索道驱动机减速机的润滑问题

文章阐述了索道减速机润滑的重要性，介绍了加强润滑的技术措施以及对润滑油的技术要求。     

支架法在海中箱梁现浇施工中的应用

针对海中箱梁现浇施工中的工程量大、工期紧迫、悬臂法施工不能满足工期要求和施工难度大等问题，文章结合青岛海湾大桥箱梁现浇施工实践，介绍以钢管桩支撑作为承载基础，采用贝雷梁与碗扣式支架相结合的支架，成功地解决现浇箱梁施工难题的方法。     

无线测风仪在索道线路中的应用

风是影响索道安全运行的一大因素。本文介绍了一种结构简单而适用的无线测风仪在索道线路上应用的效果。     

科技在交通社会服务中应用研究

本文分析了科技在交通社会服务中的应用存在的需求问题,结合市场对科技在交通社会服务中应用的需求,提出了提升政府网站服务水平、提升网上出行信息服务水平和提升交通产品大数据采集水平的对策。     

Role of the Railways in the Future of Air Transport

Abstract

The role of the railways in the air transport industry is usually limited to provision of access to airports. However, the development of high-speed rail networks and the congestion and environmental problems faced by the air transport industry suggest the railways could have a greater role in working with the airlines to provide an integrated transport service for medium-distance journeys (up to 800 km). Many air journeys involve two flights and a transfer at a hub airport. The alternative being investigated here would replace air journeys by a rail journey and a flight, and a transfer between them at the hub airport. Such integration could offer a positive alternative to aircraft on some routes and lead to railway journeys to airports becoming part of air transport services, and not only to provide access to them. Integration could therefore provide a better use of available air capacity rather than duplicating some high-speed rail routes and services.     

A test of the two-mode UMOT in the Netherlands

The UMOT model, presented as an alternative to conventional travel demand models, is critically examined for its feasibility to predict vehicle distance travelled and average daily traffic in The Netherlands. Using data from the National Travel Survey (OVG) 1978 a Dutch version of UMOT is developed, and an attempt is made to validate it on historical data from the period 1960 to 1980. Some comparisons are made with results of similar work using 1976 survey data in the UK by the Transport and Road Research Laboratory.     

风积沙在沙漠区域填砂路基公路施工中的应用

文章通过对沙漠区域风积沙的物理力学性质和工程特性的分析,结合某省级公路工程试验段风积沙路基施工方案,介绍了风积沙路基的施工工艺与质量控制要点,并探讨了以风积沙作为路基填筑材料的技术处理方案,为沙漠地区路基施工提供参考。     

挤压性地层中隧道围岩变形控制

从穿越瑞士列奇堡隧道的挤压变形性极强的碳质页岩带的经验中,可以得出下述结论：圆形含承压单元的支护截面,其收敛变形性总趋势要比马蹄形不含承压单元的支护截面小；圆形支护截面与马蹄形支护截面的变形性没有本质的区别；由于山体构造的不均一性,导致开挖断面的不规则变形,这是使承压单元过早脱落的原因。     

Problems of the carless in the United Kingdom and the United States

An examination of current population statistics shows that in the U.S. more than half of the population is without immediate access to a car, and in the U.K. more than three-fifths of the population is without access to a car. This phenomenon has been accentuated by national investment in both countries in major highway programs. The term carless refers to more than just households that own no cars. It extends, in households with cars to those without licenses (old and young), the handicapped, and even the licensed drivers who have no access to the family car when it is in use elsewhere (e.g. at work). The most severely effected are those in urban areas and especially the urban poor. Transportation expenses are limited for the poor when other family expenditures (food, shelter) take a high priority. Once the work trip has been satisfied, money for other trips, for the poor, is not always available. One solution to cost-free travel is pedestrianism (walking), but this too is difficult in urban areas where the pedestrian has been overlooked in favor of the car. Solutions to problems of the carless include dial-a-ride, better public transit, and better design of urban form.     

桥梁抗震设计中的地震力计算

结合实际工程算例,针对《公路桥梁抗震设计细则》中规则桥梁地震力计算的两种方法进行分析,探讨其特点和适用性。