In order to explore the effects of ground shaking on buried lifelines new experiments were devised. Single gravity model shaking table experiments were developed and conducted to examine the response of instrumented pipes buried in dry sand when subjected to shaking. This study was aimed to obtain a better understanding of the behavior of embedded lifelines by considering the effects of geometrical complications. Since, such structures may be close to underground concrete walls of adjacent buildings in an urban environment, the influence of nearby concrete structure was also investigated. Details of the experimental setup and procedures are first explained. Then, test data are discussed in terms of longitudinal bending moment and soil pressure distribution of model structures as well as P-Y curves.
GPS on Every Roofは，地震発生時に家屋の倒壊状況を把握するシステムである．本システムは，GPS受信機を搭載した無線センサノードを家屋の屋根に搭載し，地震による変位を測定する．GPS解析は，通信量を抑制するためにオンボードで行う．しかし，解析に必要な倍精度演算を行う高機能CPUは，センサノードとしては消費電力が大きい．GPS無線センサネットワークの実用化に向けて，限られた電源で長期間稼働させることが課題であり，省電力化が望ましい．本論文で提案するハイブリッドセンサノードでは，高機能CPUと共に省電力CPUを搭載している．高機能CPUの使用をGPS解析に限定し，他の処理を省電力CPUで行うことで，センサノード全体の省電力化を目指す．検証実験では，測位精度の目標値を達成しつつ，全所要時間576秒のうち高機能CPUの稼働時間を10秒に抑えた．
Smart visualization of output from Integrated Earthquake Simulation (IES) performed for various earthquake scenarios is studied by taking advantage of existing methodology of big data visualization and by developing our own methodology which is suitable for earthquake disaster assessment. A key issue of being smart is to deliver information generated by IES to not only professional earthquake engineers, but also non-professional government officials and city residents. Simple visualization for city residents, wide area visualization for government officials, and dual visualization for professional engineers are proposed to bring common recognition to IES users. As a trial of smart visualization, both structure-wise and scenariowise damage condition statistics are graphed by means of histograms and mosaic plots; spatial clustering analysis for damaged structures is introduced and the distance between the damage conditions of earthquake scenarios is defined and visualized, accompanied by scenario cluster analysis.
A framework of seismic design method appropriate for earthquake disaster conditions of developing countries is proposed. For countries in which seismic load data is either unavailable or incomplete, a rational and simple seismic design guideline is developed utilizing the performance-based seismic design approach. For this purpose, the current seismic design practice in Syria is discussed.