共查询到20条相似文献,搜索用时 109 毫秒
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针对深圳地铁岗厦站的周围环境及设计要求,在车站结构设计中采娶先进措施,保证彩田路半幅施工,半幅通车,对横穿车站的11万伏高压电缆实施原地保护,在车站中部设计了两个中庭,车站围护采用矩形人工挖孔桩,并兼作车站主体结构侧墙,采用车站中部逆筑,其它为顺筑的施工方法。 相似文献
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文章主要论述广州地铁五号线文冲站折返线暗挖隧道上方房屋保护的方案设计,采用合理有效的保护措施,以及运用有限元程序对其进行数值模拟计算指导设计,可为城市同类工程的设计与施工提供参考和经验。 相似文献
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文章结合北京地铁5号线和平西站至北土城东路站区间隧道施工实践,对地铁渡线地段浅埋、大跨、变断面隧道暗挖施工技术进行了分析,在从小断面向大断面施工、大断面向小断面施工以及双连拱地段等的施工技术方面提出了新的思路。 相似文献
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北京地铁五号线蒲黄榆车站为22.6 m宽大跨度单拱单柱双层结构,采用中洞法开挖,开挖跨度相对较大,临时支护体系繁多,二次衬砌过程中结构受力转换复杂。文章主要介绍蒲黄榆车站二次衬砌施工分层、分段划分及临时支撑拆除代换技术。 相似文献
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Yu-Hsiang Cheng Chia-Chen Liu Yi-Lun Lin 《Transportation Research Part D: Transport and Environment》2009,14(7):479-486
Ultrafine particle number concentrations are measured at five stations and inside trains on four routes in the Taipei Rapid Transit System during October–December 2007. The results indicate that there are no additional emission sources of ultrafine particle on the platforms. Ultrafine particle levels at a ground level station were, however, adversely affected by traffic outside of the station. Moreover, particles can enter the underground stations via the subway tunnels resulting in high levels during weekdays. 相似文献
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文章针对浅埋暗挖法施工中结构受力转换的问题,结合某地铁工程实例,介绍了几种对控制沉降比较有效的施工方法。在竖井开挖到通道顶标高后提前对通道顶部土体进行加固,并施作短柱暗梁,有效地保证了结构安全和土体稳定;在通道转入双联拱正洞的施工中采用增设洞门加固环和通道顶部加强拱等措施,成功地解决了通道格栅破除后通道的稳定问题,并有效地控制了地层下沉;通过对现场一手监测数据的深入分析,结合自己的施工体会,总结出了一些较为珍贵的施工经验,对类似工程设计和施工有一定的参考价值。 相似文献
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A new concept of subway station capacity (SSC) is defined according to the gathering and scattering process. A queuing network analytical model of station is created for calculating SSC, which is built by M/G/C/C state dependent queuing network and discrete time Markov chain (DTMC). Based on the definition and the analytical queuing network, a SSC optimization model is developed, whose objective function is to optimize SSC with a satisfactory rate of remaining passengers. Besides, a solution to the model is proposed integrating response surface methodology with iterative generalized expansion method (IGEM) and DTMC. A case study of Beijing Station in Beijing subway line 2 is implemented to verify the validity and practicability of the proposed methods by comparison with simulation model in different experiments. Finally, some sensitivity analysis results are provided to identify the nodes that have the greatest impact on SSC. 相似文献
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兰渝铁路桐子林隧道,上跨既有遂渝线和既有黄井联络线隧道,隧道净距小,爆破要求高。通过采用四区掘进、浅眼多循环、微差控制爆破、控制爆破震速等施工技术,在保证既有线安全情况下顺利通过。 相似文献