Innovative Structural Damage Detection of Bridges by Least Squares Adjustment with Constraints

详细信息    查看全文

• 作者：Brandes Klaus^a ; ^{klaus.brandes@ingenieur.de" class="auth_mail" title="E-mail the corresponding author} ; Daum Werner^b ; Hofmann Detlef^b ; Basedau Frank^b ; Kubowitz Petra^a
• 关键词：Damage detection of bridges ; Monitoring ; Lagrange Multiplier test ; Complete Matrix formulae ; Mechanical measurement
• 刊名：Materials Today: Proceedings
• 出版年：2016
• 出版时间：2016
• 年：2016
• 卷：3
• 期：4
• 页码：942-946
• 全文大小：424 K

文摘

Long-term monitoring of bridges requires the early detection of spreading damage because very often the damage is not really visible. For many decades engineers and scientists relayed on dynamic methods especially modal ones. However, after fundamental tests by the U.S. FHWA in 1993, it became evident that more successful methods should be developed, but no innovation really happened. A substantial innovative detection method started four years ago from Lagrange Multiplier Testing which eventually resulted in experimental verification based on measurement of deflection and curvature of the bridge beam and together the methodological combination of both.