既設鉄道山岳トンネルの地震対策と震災復旧の考ぇ方

摘要

筆者らは，これまで，既設の鉄道山岳トンネルの地震被害や復旧などに関する事例の分析，模型実験，数値解析を行い，山岳トンネルの地震被害メカニズムの究明と地震対策法の確立のためのー連の研究を行ってきた.この成果をもとにして，既設山岳トンネルの地震対策と震災復旧のための計画•調査•設計の考え方を提案し，『既設山岳トンネルの地震対策•震災復旧マニュアル(案)』(2010年11月)を作成した.本稿では，このマニュアルにおいて提案した地震対策と震災復旧の考え方について，その概要を紹介する.%Up until now, the authors have conducted a series of studies in order to clarify the mechanism of seismic damage and established seismic countermeasure to mountain tunnels with case analysis, model experiments and numerical analysis on cases related to earthquake damage and repair in existing mountain railroad tunnels. Based on the results of these sutudies, We published "the Proposed Manual for Earthquake Countermeasures and Disaster Repair for Existing Mountain Tunnels" in November, 2011 to propose the philosophy of plans, investigations and design for seismic countermeasures and disaster repair for existing mountain tunnels. This report presents an outline of philosophy about the seismic countermeasures and disaster repair proposed in the manual.