上海交通大学学报（英文版） ›› 2013, Vol. 18 ›› Issue (3): 306-310.doi: 10.1007/s12204-013-1399-9

• 论文 • 上一篇    下一篇

Application of Non-Detective Techniques in Traditional Masonry Structures

CHENG Cheng (程 成), CHE Ai-lan* (车爱兰), CAO Yong-kang (曹永康)   

  1. (School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • 出版日期:2013-06-28 发布日期:2013-08-12
  • 通讯作者: CHE Ai-lan(车爱兰) E-mail:alche@sjtu.edu.cn

Application of Non-Detective Techniques in Traditional Masonry Structures

CHENG Cheng (程 成), CHE Ai-lan* (车爱兰), CAO Yong-kang (曹永康)   

  1. (School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Online:2013-06-28 Published:2013-08-12
  • Contact: CHE Ai-lan(车爱兰) E-mail:alche@sjtu.edu.cn

摘要： Study on the non-destructive detection techniques and damage identification method is of great importance in protecting and rehabilitating the ancient architectural structure. In order to identify the location and the grade of structural damages, a multi-point microtremor measurement is performed on carved brick screen walls at Songjiang area in Shanghai, and the observed dynamic parameters (natural frequencies and natural modal) are obtained. On the other hand, the dynamic parameters of the original structure are calculated by finite-elementmethod (FEM). Normalizing the observed and calculated parameters on unified physical quantity, the damages are located by the variation on vibration modal, and the grade of structural damages is quantitatively evaluated by stiffness losses based on the variation on vibration modal.

关键词: damage identification, microtremor, natural modal, stiffness loss

Abstract: Study on the non-destructive detection techniques and damage identification method is of great importance in protecting and rehabilitating the ancient architectural structure. In order to identify the location and the grade of structural damages, a multi-point microtremor measurement is performed on carved brick screen walls at Songjiang area in Shanghai, and the observed dynamic parameters (natural frequencies and natural modal) are obtained. On the other hand, the dynamic parameters of the original structure are calculated by finite-elementmethod (FEM). Normalizing the observed and calculated parameters on unified physical quantity, the damages are located by the variation on vibration modal, and the grade of structural damages is quantitatively evaluated by stiffness losses based on the variation on vibration modal.

Key words: damage identification, microtremor, natural modal, stiffness loss

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