Quick earthquake damage detection method for bridge structures

摘要：

When an extreme earthquake occurs,it is essential to detect the severe structural damage that affect the structural safety immediately.This paper proposes a method for quick earthquake damage detection/ evaluation of reinforced concrete bridge columns.An intelligent sensor unit is developed that captures changes in the natural period of a bridge column by FFT of response acceleration recorded on the top of the column during an earthquake,and estimates the maximum response ductility based on those changes.The efficiency and applicability of the proposed method was investigated through a series of shake table tests of reinforced concrete bridge column models.The maximum response ductility estimated by the method provides good agreement with the actual ductility.

关键词： Bridge reinforced concrete column earthquake damage detection natural period intelligent sensor

作者: J. Sakai H. Kobayashi S. Unjoh

作者单位: Public Works Research Institute,Tsukuba,Japan Hanshin Expressway Company Limited,Osaka,Japan

会议类型: 国际会议

会议名称: The World Forum on Smart Materials and Smart Structures Technology(SMSST07)(2007年世界智能材料与智能结构技术论坛)

会议地点: 重庆·南京

会议语种:英文

在线出版日期: 2007-05-01（万方平台首次上网日期，不代表论文的发表时间）