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本研究では, ISO規格(ISO 16932)に規定された建物開口部におけるガラスの耐衝撃破壊性能評価方法に従って衝撃試験を行うことのできる試験装置を作成し, 種々の板ガラスを試験体として用いた衝撃試験を行い, 耐衝撃破壊性能を明らかにした。得られた結果をまとめると, 今回試験体として用いた普通フロートガラス(厚さ5, 6, 8, 10, 12mm), 強化ガラス(厚さ5, 6, 8, 10mm), 網入りガラス(厚さ6.8, 10mm)は, ISO規格に従う判定に不合格であった。合わせガラス(中間膜の厚さ30, 60, 90milの３種類とガラス厚さ3, 5mmの２種類の組み合わせ)ではISO規格に従う加撃体Ａ, Ｂ, Ｃによる, フィルム貼りガラス(フィルム厚さ50, 100, 350, 450μmの４種類とガラス厚さ5, 6mmの2種類の組み合わせ)では加撃体Ａ, Ｂによる衝撃試験に合格した。, Impact resistant test of glazing was carried out based on ISO 16932. An air-cannon, that is a missile-propulsion device, for the impact resistant test of cladding against windborne debris was manufactured. A series of tests of various kinds of glasses was carried out to investigate the performance of impact resistant and the characteristics of failure. The performance of sheet glasses, such as float, tempered, wired, laminated and filmed glasses was evaluated by the specification of ISO16932.

本研究では，日本における建築物外装材の耐衝撃性能の標準仕様や試験方法の策定に資するため，高速で飛来する飛散物を模擬する加撃体を射出し，外装材の耐衝撃試験を行うためのエアーキャノンを作製した．エアーキャノンの設計にあたっては，アメリカ合衆国やISO基準に準ずる耐衝撃性能試験を行えるようにした．本報告では，外装材の耐衝撃性能を評価する既存の試験・評価方法を概説するとともに，作製した装置の性能試験結果について述べる, We manufactured an air-cannon, that is a missile-propulsion device, for the impact resistant test of cladding against windborne debris. The air-cannon consists of a compressed-air supply, pressure control and release valves, a barrel, a support frame and a speed-measuring system. Sets of photoelectric sensors mounted on the barrel are used for measuring the speed of the missile. The cannon is capable of propelling a missile at a specified speed and orientation towards a specified impact location. We calibrated the speed measuring system by a high-speed video camera. The fastest speed was 75m/s for a 3kg lumber. Tolerances for the measured impact speed were satisfied the specification of ISO16932.

Typhoon Shanshan(0613) hit Nagasaki Prefecture of Kyushu on September 17, 2006. Residential houses, public facilities, agricultural facilities and so on suffered severe damage. Typhoon Shanshan moved on the almost same paths of Typhoon Songda(0418) and Typhoon Mireille(9119) that caused serious damage to agricultural-products such as apples in Tohoku district. The authors report the outlines of the wind information and the structural damage in Kyushu area based on NeWMeK data, and the roof damage of a community center is focused. The slate-covered roofs of Iiduka Municipal Cultural Center, called Cosmoscommon, were blown, and the wind debris hit the adjoining Iiduka City Library. It is important not to produce wind debris causing secondary disasters. In Japan, we often use public facilities as local headquarters or as tentative evacuation shelters in an emergency, such as a natural disaster, and so it is necessary to improve the performance of the roofs of the public facilities to handle strong wind load.