MONITORING DEFORMATIONS OF STRUCTURES

A mathematical model has been established for photogrammetric measurement of structural deformations. The model adjusts simultaneously ground-measured orientation elements and photogrammetrically obtained plate coordinates by means of least squares. The computed variance and covariance matrices are used to detect errors as well as to show the interaction between variables. A computer-generated structure is used to establish standards for ground and photogrammetric measurements. This generated structure gives a guideline for the procedure of field measurements. The system has achieved a high degree of accuracy and is capable of accepting five convergent photographs taken from terrestrial or aerial stations with 100 per cent overlap. /Author/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00991112
• Supplemental Notes:
  • Presented at the International Symposium on Close Range Photogrammetric Systems, Univ. of Illinois, Aug. 1975.
• Corporate Authors:

  American Society of Photogrammetry

  105 North Virginia Avenue
  Falls Church, VA  United States  22046
• Authors:
  • Erlandson, J P
  • Veress, S A
• Publication Date: 1975-11

Media Info

• Features: Figures; References;
• Pagination: p. 1375-84
• Serial:
  • Photogrammetric Engineering and Remote Sensing
  • Volume: 44
  • Issue Number: 11
  • Publisher: American Society for Photogrammetry and Remote Sensing
  • ISSN: 0099-1112

Subject/Index Terms

• TRT Terms: Accuracy; Deformation; Mathematical models; Measurement; Monitoring; Photogrammetry; Structures
• Subject Areas: Bridges and other structures; Design; Highways;

Filing Info

• Accession Number: 00128479
• Record Type: Publication
• Files: TRIS
• Created Date: May 14 1976 12:00AM