01031507

Component

Close-range photogrammetry has found many diverse applications in the fields of industry, biomechanics, chemistry, biology, archaeology, architecture, automotive, and aerospace, as well as accident reconstruction. Although close-range photogrammetry has not been as popular in bridge engineering as in other fields, the investigations that have been conducted demonstrate the potential of this technique. The availability of inexpensive, off-the-shelf digital cameras and soft-copy, photogrammetry software systems has made close-range photogrammetry much more feasible and affordable for bridge engineering applications. To increase awareness of this powerful non-contact, non-destructive technique, this paper reviews the basic development of close-range photogrammetry and applications in bridge engineering including deformation and geometry measurement; structural test monitoring; and historic documentation. The major aspects of photogrammetry bridge measurement are covered starting from the late 1970s and include a description of measurement types, cameras, targets, network control, and software. It is shown that early applications featured the use of metric film cameras (specially designed for photogrammetry purposes), diffuse targets (non-retroreflective), stereoscopic photogrammetry network layout, and analog analytical tools, which transformed over time to the use of non-metric cameras, retro-reflective targets, highly convergent network layout, and digital imaging and analysis.

01020180

06-0563

English

15p

2006

Transportation Research Board 85th Annual Meeting

CD-ROM

Figures (6) ; References (30) ; Tables (1)

Bridge engineering; Deflection; Digital cameras; Image analysis; Inspection equipment; Instruments for measuring deformation or deflection; Photogrammetry

Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls

Transportation Research Board Annual Meeting 2006 Paper #06-0563

BTRIS, TRIS, TRB

Mar 3 2006 10:23AM