自動車交通量にみる高速道路機能の時空間的分析-東日本大震災と阪神・淡路大震災の事例比較-  [in Japanese] SPATIO-TEMPORAL ANALYSIS OF TRAFFIC VOLUMES ON HIGHWAY NETWORKS - COMPARISON OF THE GREAT EAST JAPAN EARTHQUAKE DISASTER AND THE GREAT HANSHIN-AWAJI EARTHQUAKE DISASTER -  [in Japanese]

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Abstract

東日本大震災により影響を受けた高速道路網の日交通量のデータを入手し,時空間的な変動を可視化するとともに,災害対応オペレーションと関連付けて高速道路機能の分析を行った.地震直後,約2,300kmにわたって通行止めの措置がとられ,緊急交通路指定による交通規制が続いたが,それらの解除とともに交通量は迅速に回復し,約2週間で震災前の水準に戻った.長期的にみるとその後も主要路線で交通量は漸増し,2011年7月~10月の間に1.6~2倍に達した.阪神・淡路大震災で大被害を受けた高速道路網の月平均日交通量のデータについても,同様の観点から時空間的分析を行った.また高速道路網の施設水準と機能水準を表す3種類の指標を算出し,両震災で比較を行った.

 Daily traffic volumes on highway networks in the Great East Japan Earthquake Disaster were spatio-temporally visualized and analyzed in the light of post-earthquake operations. Approximately 2,300 km of highways was closed for emergency response after the main shock. Once the traffic restrictions and controls were lifted, traffic volumes got back to normal within two weeks. On the long-term basis, traffic volumes exceeded the pre-quake level by 60% to 100% during July through October, 2011. Average daily traffic volumes (ADT) on monthly basis in the Great Hanshin-Awaji Earthquake Disaster were also shown, and three kinds of highway network performance measures were compared between the two disasters.

Journal

  • Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE))

    Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)) 69(4), I_121-I_133, 2013

    Japan Society of Civil Engineers

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