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fuyong725

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In the 1960s because the Europe and America industrially advanced country the economical swift growth, compact car sharp growth, caused the municipal transportation to support stops up, to alleviate the municipal transportation to support stops up proposed the public transportation first municipal transportation developmental strategy, according to the above, the European and American some city's transportation supported stops up obtained certain Afterward, in our country, facing urbanized, motorization challenge, as well as urban development, the people realize the transportation question to become gradually restrict the urban development the primary Therefore, many transportation workers and the urban government start to pay great attention to give priority to the mass transit, realizes the urban land intensification use and the sustainable development, avoids walking the Western developed country again by the compact car journey old route This article in absorbs the domestic and foreign many scholar research results in the foundation, how discussed initially to establish the urban public transportation first general system's first, this article introduced from the background and the concept the public transportation first connotation and the measure, let the reader be able first to have a rational understanding to the public Next, the comprehensive elaboration implementation public transportation first strategy policy, from the high place macroscopic has grasped to realize the urban public transportation first general system, government's guidance and support Third, the concrete public transportation first measure from the spot, the line, surface angle embarking, by the road section, the road intersection, the network will divide into the chapter, has discussed the road section public transportation first general measure, the street intersection public transportation first general measure, the public transportation priority network plan method , In the road section public transportation first general measure, mainly introduced the public transportation special-purpose road's classification and the establishment In the street intersection measure, has studied the spatial first measure and the time preference measure separately, namely the public transportation special-purpose enters the tastes and the road intersection public transportation priority signal But in the network planning method, elaborated for everybody establishes a public transportation priority network the Finally, this article urban Lanzhou which is at by the author is an example, has analyzed this city existing mass transit question, and proposed this city should establish a complete public transportation first general system's

交通运输工程论文摘要写什么

90 评论(10)

yummylife

毕业实习是整个毕业设计教学计划中的一个有机组成部分,是土木工程专业的一个重要的实践性叫许耳环界。通过组织参观和听取一些专题技术报告,收集一些与毕业设计课题有关的资料和素材,为顺利完成毕业设计打下坚实基础。通过实习,应达到以下目的:   1、了解一般工业与民用建筑或道桥工程的整个设计过程;   2、了解建筑物的总平面布置、建筑分类及功能作用、结构类型及特点、结构构件的布置及荷载传递路线、主要节点的细部构造和处理方法等;   3、了解建筑物的施工方法;   4、了解建筑、结构、施工之间的相互关系;   5、了解建筑结构领域的最新动态和发展方向。 工程创新点与特点   ⑴ 主桥跨度大:大桥斜拉桥主跨504米为世界共类桥梁跨度之首。   ⑵ 桥梁荷载重:该桥是世界上第一座按四线铁路修建的公铁两用斜拉桥,可以同时承载2万吨的荷载,是世界上荷载量最大的公铁两用桥。   ⑶ 设计速度高:此桥是我国第一座铁路客运专线的大跨度斜拉桥,客运专线设计速度200公里/小时,按250公里/小时作动力仿真设计。   ⑷ 结构型式新:大桥首次采用三片主桁、三索面的新型结构形式;公路桥面采用正交异性板或混凝土与钢桁结合体系,铁路桥面系采用混凝土与钢桁结合体系;主塔上设有约束梁体纵向位移的大吨位液压阻尼装置。   ⑸ 施工工艺新:2号主塔墩基础首次采用巨型双壁钢吊箱围堰整体浮运锚墩预应力精确定位新工艺;3号主塔墩基础采用巨型双壁钢吊箱围堰整体浮运重型锚碇定位施工工艺;首次研制扭矩30tm动力头钻机用于φ4米大直径钻孔桩施工。   ⑹ 施工难度大:平面尺寸长70米×宽44米的巨型双壁钢吊箱围堰工厂整体制造横向下水浮运定位施工难度大,工艺要求高,居同类工程之首;围堰平面定位精度在5厘米内,钢护筒垂直度在1/500内;φ4米大直径钻孔桩在软硬胶结不均砾岩中施工;16000方承台大体积混凝土施工与控制;新型三主桁制造架设及新型板桁组合结构施工精度高、工艺要求严、施工难度大;截面451φ7毫米长271米镀锌平行钢丝斜拉索制造与安装;5米高主塔垂直度及斜拉索索道管空间定位施工控制;自重2×1300吨大吨位箱梁整体现浇施工。 ( 桥梁施工管理研究)
252 评论(11)

冒牌傻子

咨询一下老师,老师会帮忙挑选课题。论文其实不难过,关键是认真对待。如果马虎,答辩的时候会很惨。
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