The Advanced Countermeasures of Prevention for Concrete Pieces Falling at Concrete Structures in Japan
Recently, it is serious social issue to be of frequent occurrence of concrete pieces falling from elevated bridges of highway, railway and tunnels in Japan. Concrete pieces falling brings the great damage to the passing cars and the foot passers and sometimes many people as the third party are perished in the accidents. The importance of countermeasures for preventing concrete pieces falling is recognized and the effective and practical countermeasures not only for existing structures, but also newly build ones have been adopted and applied. In this study, the current status of the effective and practical countermeasures for prevention of concrete pieces falling at concrete structures in Japan is introduced. From the viewpoints of materials, structural design and construction, the causes of concrete pieces falling were investigated. Subsequently, continuous fiber sheet bonding method constituted of three axial vinylon fiber and concrete polymer composites as typical countermeasure was proposed and its verification was discussed.
concrete piece falling concrete piece peeling three azial vinylon fiber
Makoto Kawakami Fujio Omata Sadamu Ono
Department of Civil and Environmental Engineering, Akita-University 1-1, Tegatagakuen-cho, Akita-shi Sales Department, Sho-Bond Corporation 2-2-17,Minamisuna,Koto-ku,Tokyo,136-0076 Japan C&R Corporation, Tomisawa Bld., 2-23-3, Hon-machi, Kokubunji-shi, Tokyo, 0185-0012 Japan
国际会议
6th Asian Symposium on Polymers in Concrete(第六届亚洲聚合物混凝土国际会议)
上海
英文
177-182
2009-10-29（万方平台首次上网日期，不代表论文的发表时间）