SURVEY OF DAMAGE IN RESIDENTIAL HIGH-RISE BUILDINGS AFTER THE 2011 OFF THE PACIFIC COAST OF TOHOKU EARTHQUAKE AND ACTIONS TAKEN BY RESIDENTS FOCUSING ON FUNCTIONAL MAINTENANCE OF FIRE SAFETY MEASURES: －Part1 Research on fire safety assessment of residential high-rise buildings after an earthquake－@@@－高層共同住宅における地震後火災に対する安全性評価手法の構築 その1－