都市の進化を促す地上地下の一体的可視化Urban Evolution through Integrated Above- and Below-ground Visualization都市基盤施設の調査・計画・設計・維持管理への3D技術の活用Utilization of 3D Technology for Urban Infrastructure Planning, Survey, Design, and Management3Dモデリング技術の進展によって、都市基盤施設整備への取り組み内容が大きく変わろうとしています。 たとえば、地上施設とともに複雑な地下施設群を立体的に点群計測し、BIM／CIM*1 を介して都市全体を3Dモデル化（可視化）することで、地上地下を一体的に把握できるようになりました。これにより、既存施設との近接施工など難易度の高い工事、コストマネジメント、避難シミュレーションなど、さまざまな面で精度が向上しています。また、都市を支える地盤も、3Dモデル化によって動的／広域な地盤解析が可能になり、より地震に強いまちづくりへとつながります。 日建設計シビルは、早くから地上地下の3Dモデル化に取り組み、より高度な建築計画、スマートシティ化、広域防災や広域交通制御などにその応用範囲を広げています。*1 Construction Information Modelingの略称。3Dモデルベースの建築設計手法であるBIMを土木分野に拡大導入したもの。Progress in 3D modeling technology is bringing major changes to urban infra-structure upgrades. By measuring the point cloud of complex underground facilities together with the facilities above them and creating a 3D model using BIM/CIM,*1 we can see what is happening above and below ground all at once. This has improved the precision of many aspects of construction, such as building in close proximity to existing structures, cost management, and evacuation simulations. In addition, dynamic and wide-range geotechnical analysis of the ground below cities is now possible with 3D technology, which helps to build cities that are better equipped to withstand earthquakes. Nikken Sekkei Civil Engineering has been involved in creating 3D models of above- and below-ground facilities from the early days of 3D modeling, and continue to broaden the application range of 3D tech-nology to improve precision in building design, create smart cities, and assist with regional disaster management as well as traffic control.*1 Construction Information Modeling. Similar to BIM, 3D modeling used in architectural design, but reshaped and improved for use in civil engineering.NSC3D測量（点群）3D Measurements(Point Cloud)近接施工協議Neighboring Constructions Consultation3D地盤モデル／解析3D Geotechnical Model / Analysis3D地盤モデル｜3D Geotechnical Model傾斜、断層等による不連続など、様々な現象を表現し、複雑な構造を伴う地層をモデル化。Various features, such as slopes, and discontinuity due to fault lines, etc. are expressed to model the complex information that makes up geotechnical structures.3D地盤モデル｜3D Geotechnical Model傾斜、断層等による不連続など、様々な現象を表現し、複雑な構造を伴う地層をモデル化。Various features, such as slopes, and discontinuity due to fault lines, etc. are expressed to model the complex information that makes up geotechnical structures.災害時の動線の滞留や人の視野などをリアルに再現し、防災計画に活用。Useful in disaster planning as it realistically replicates movement, congestion, and people’s field of vision during disasters.輻輳する都市の地下インフラを可視化し、干渉有無の確認や関係者間協議などに活用。Makes visible the convergence of underground urban infrastructure to check for conflicts, coordinate among various stakeholders, and so on.3D地盤解析｜3D Geotechnical Analysis2次元の解析では難しい動的・広域なシミュレーションを実現。Enables dynamic and wide-range simulations not easily done with 2D analysis.避難シミュレーションEvacuation Simulation352019 WINTER41Annual 2019 | WORKS
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