Three-dimensional seismic tomography for existing concrete structures

Yoshikazu Kobayashi, Tomoki Shiotani, Dimitrios G. Aggelis, Hiroo Shiojiri

Research output: Chapter in Book/Report/Conference proceedingConference paper

17 Citations (Scopus)

Abstract

Damage detection of existing structures is one of the important topics in term of maintenance and retrofitting. Seismic tomography is one of the methods of identification and has been applied for various field of engineering that includes damage detection of existing structures. This is typically conducted on two dimensional models; however, three-dimensional tomography is required due to the consideration of three dimensional extent of damage area. This paper presents a three dimensional identification algorithm that is represented by combination of the ray-trace algorithm and SIRT (Simultaneous Iterative Reconstruction Technique) for the three-dimensional seismic tomography for existing structures. The ray-trace algorithm is based on Huygens's principal and the space for the ray-trace is subdivided into hexahedron elements. The shape of each element is described by first-order isoparametric element that is commonly used by finite element analysis. This feature enables that the mesh data for ray-trace can be prepared by pre-processor for finite element analysis. The presented method is applied for an existing structure to check the feature and applicability of the presented method.

Original languageEnglish
Title of host publicationProceedings of the 2nd International Operational Modal Analysis Conference, IOMAC 2007
PublisherAalborg University
ISBN (Print)9788791606144
Publication statusPublished - 1 Jan 2007
Event2nd International Operational Modal Analysis Conference, IOMAC 2007 - Copenhagen, Denmark
Duration: 30 Apr 20072 May 2007

Publication series

NameProceedings of the 2nd International Operational Modal Analysis Conference, IOMAC 2007

Conference

Conference2nd International Operational Modal Analysis Conference, IOMAC 2007
CountryDenmark
CityCopenhagen
Period30/04/072/05/07

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