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P a r i s , F r a n c e
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Research & Reviews: Journal of Engineering and Technology
ISSN: 2319-9873
Civil engineering 2019
International Conference on
Structural and
Civil Engineering Research
S
tructural health monitoring of buildings is of vital importance due to the large number of people inhabiting them. It is important,
also, to obtain damage indexes that reflect the real damaged physical state of structural elements. The new Crack Index
Method (CIM) is presented to locate and quantify crack-depth in structural elements of buildings. To achieve this, the flexibility
matrix of the structure in its damaged state is compared with the undamaged one, a rectangular system of linear equations is
solved by means of the pseudo inverse method and singular value decomposition is applied to the so-called crack index matrix,
which contains information on the crack-depth associated with each element. The CIM was applied to a three-story frame located
in the lake area in Mexico City and to a frame belonging to the Secretariat of Communications and Transportation building
damaged during the 1985 earthquake. In both, structures were correctly identified location and length of crack of their damaged
structural elements. For these cases, the proposed method yielded excellent accuracy when calculating damage magnitudes with
relative error values equal to zero when all vibration modes of the structure are known.
ramsesrodriguezr@gmail.comCrack index method for damage detection in
buildings
Ramsés Rodríguez
1
, Luis S Vaca
2
and Monica R Jaime
2
1
Escuela Superior de Ingeniería y Arquitectura-IPN, Mexico
2
Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada-IPN, Mexico
JET 2019, Volume:8