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Medientyp:
E-Artikel
Titel:
Computing Method for Estimating Strain and Stress of Steel Beams Using Terrestrial Laser Scanning and FEM
Beteiligte:
Kang, D.S.;
Lee, H.M.;
Park, Hyo Seon;
Lee, I.
Erschienen:
Trans Tech Publications, Ltd., 2007
Erschienen in:Key Engineering Materials
Sprache:
Nicht zu entscheiden
DOI:
10.4028/www.scientific.net/kem.347.517
ISSN:
1662-9795
Entstehung:
Anmerkungen:
Beschreibung:
<jats:p>Terrestrial laser scanning (TLS) is the technique able to acquire the dense
three-dimensional (3D) coordinates effectively over entire surfaces of the objects using laser pulses.
Recently, TLS is often used in various fields such as civil engineering or archeology for object
modeling, volume survey of tunnel, geographic information system (GIS), and the purpose to
conserve the detailed shapes of cultural heritages. However, though its applications are extended
continually, an application for system identification and structural health monitoring is a beginning
stage. To improve the quality of data for the model based on TLS coordinate information, the digital
elevation model (DEM) constructing method is applied. In a practical point of view, since there is no
need to place a strain or stress sensor to a structure to be monitored, this model could has many
advantages such as no in situ instrumentation of sensors, no difficulties to reach structures or
structural members, independence of natural light source and no wiring cost. For the verification of
this model, experimental tests are performed with a continuous steel beam subjected to point loads.</jats:p>