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首页> 外文会议>Innovative infrastructures - toward human urbanism : Report >The construction of the double-deck system consisted of new railway deck and existing Shinkansen viaduct in urban area
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The construction of the double-deck system consisted of new railway deck and existing Shinkansen viaduct in urban area

机译：双层系统的建设包括新的铁路甲板和市区现有的新干线高架桥

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We have implemented the project which connects the radiate railway lines existing individuallyrnwith new line “Tohoku-Jukan line”. This line is now under construction just above the in-servicernShinkansen line, because it is very difficult to obtain the space for new line in urban area of Japan.rnThe construction is realized by applying the viaduct structure with double-deck system, whichrnconsists of the existing viaduct for Shinkansen and new deck and new pier for the new line addedrnon the steel rigid-frame pier of the existing viaduct.rnFor this renewed structure, we had studied on the seismic performance by carrying out the analysisrnand the experiment. The study gave us the result that the base of the piers had not enough capacityrnagainst the large-scale earthquake, which we have experienced up to now in Japan. From this result,rnwe also developed the reinforcement method, which was ascertained by horizontal cyclic loadingrntest, for the base from the inside of the hollow steel pier, and conducted it. The reason why thernreinforcement had to be conducted from the inside of pier was that the space underneath the viaductrnis normally used for various building and it is impossible to construct something from the outside ofrnthe pier.
机译：我们已经实施了将单独存在的辐射铁路线与新线“东北线”连接起来的项目。由于很难在日本市区内获得新线的空间，因此该线正在建设中，仅在服务中。新干线是通过应用带有双层系统的高架桥结构实现的，该结构由新干线的现有高架桥和新线的新甲板和新桥墩，以及现有高架桥的钢制刚架桥墩。对于这种新结构，我们通过进行分析和实验研究了其抗震性能。这项研究给我们的结果是，码头的底部承受了迄今为止我们在日本经历的大规模地震的能力。根据这一结果，我们还开发了一种通过水平循环荷载试验确定的从空心钢墩内部进行加固的方法，并进行了加固。必须从墩的内部进行加固的原因是，通常用于各种建筑物的高架桥下面的空间，并且不可能从墩的外部构造东西。

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