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上海轨道交通5号线南延伸工程穿越黄浦江处与沪闵路—沪杭公路共用同一通道。结合公路工程的设计,并根据轨道交通的线、站位要求,对各方案的合理性、实施难度、对周边环境的影响以及工程投资等方面进行了分析和比选,最终推荐采用上下叠合的高架线方案。 相似文献
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城市轨道交通工程建设中,有不少区间隧道需要穿越地面保护建筑。以合肥轨道交通5号线金寨路站—寿春路站区间隧道穿越安徽省博物馆陈列展览大楼工程为例,介绍了线路方案优化过程;结合有限元计算,对盾构区间穿越保护建筑的影响进行了分析,提出了相关的保护措施。 相似文献
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重庆市轨道交通三号线运输能力及行车交路研究 总被引:1,自引:0,他引:1
重庆市轨道交通三号线是城市南北向骨干线路,采用跨座式单轨交通模式,通过对客流预测、线路通过能力、列车编组、运能储备等问题的分析与研究,初步确定了该系统的输送能力,并提出了行车交路方案。 相似文献
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长距离越江区间隧道在工程建设中面临众多的技术难点。结合南京轨交10号线穿越长江工程,对隧道结构、防水设计、防灾系统、盾构长距离掘进施工、盾构始发接收方案等重难点进行了分析和研究,并在工程实践中成功应用,取得了较好的效果。这对类似工程的设计、施工具有借鉴意义。 相似文献
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上海轨道交通8号线盾构隧道穿越2号线隧道的地铁监护 总被引:1,自引:0,他引:1
针对上海轨道交通8号线上、下行隧道在人民广场站从运营中的2号线隧道上部净距1.3 m处(呈“井”字形)斜交穿越施工,通过对该工程施工进行深入的分析论证,制定了科学严密的施工组织设计和信息化施工方案以及安全控制预案,有效地控制了2号线该穿越点隧道结构的沉降与隆起,并使其处于稳定状态,确保了2号线的安全运营。为类似工程积累了宝贵的设计和施工经验。 相似文献
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"超限超载"的产生与发展,蕴藏着深层的内在运作机理,包含着复杂的经济社会原因.其中道路货物运输价格体系的长期扭曲失衡与成本结构的有欠合理是一个不容忽视的根本原因.为此,公路所开展了货运市场运价与成本"治超"专项研究,先后历时一个多月,行程数千公里,深入7省市运输一线,对21家典型企业和个体业户的23辆货车、24条线路进行了跟踪调查,获取了大量的第一手资料与原始数据,并对此进行了解析. 相似文献
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Ngila Mwase† 《运输评论》2013,33(3):191-206
Zambia has attempted to reduce her excessive transport dependency on her traditional transport routes via South Africa and the former Portugese colonies. The costly construction of the Tanzania‐Zambia Railway (TAZARA) was part of this diversification strategy. This article examines the nature, extent and direction of Zambian traffic, including its historical evolution. It explores further the place of TAZARA among the various routes to Mozambican, Angolan and South African ports, and the ensuing actual and potential competition. Future traffic patterns will be influenced not only by the direct and service‐oriented costs of the different lines, but also by the region's volatile and uncertain political climate. 相似文献
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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。 相似文献
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Robert E. Paaswell 《Transportation》1973,2(4):351-371
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. 相似文献