Data compression of very large-scale structural seismic and typhoon responses by low-rank representation with matrix reshape

Yongchao Yang, Satish Nagarajaiah, Yiqing Ni

Research output: Journal article publicationJournal articleAcademic researchpeer-review

12 Citations (Scopus)

Abstract

The intrinsic low-dimensional structure, which is implicit in the large-scale data sets of structural seismic and typhoon responses, is exploited for efficient data compression. Such a low-dimensional structure, empirically, stems from few modes that are active in the structural dynamic responses. Originally, limited to the sensor and time-history dimension, the structural seismic and typhoon response data set generally does not have an explicit low-rank representation (e.g., by singular value decomposition or principal component analysis), which is critical in multi-channel data compression. By the proposed matrix reshape scheme, the low-rank structure of the large-scale data set stands out, regardless of the original data dimension. Examples demonstrate that the developed method can significantly compress the large-scale structural seismic and typhoon response data sets, which were recorded by the structural health monitoring system of the super high-rise Canton Tower.
Original languageEnglish
Pages (from-to)1119-1131
Number of pages13
JournalStructural Control and Health Monitoring
Volume22
Issue number8
DOIs
Publication statusPublished - 1 Jan 2015

Keywords

  • data compression
  • Large scale SHM
  • Low rank representation
  • Matrix reshaping
  • Seismic response
  • Typhoon response
  • Very large scale data

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials

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