The Estimation Method of Stress Distribution for Beam Structures Using the Terrestrial Laser Scanning
This study suggests the estimation method of stress
distribution for the beam structures based on TLS (Terrestrial Laser
Scanning). The main components of method are the creation of the
lattices of raw data from TLS to satisfy the suitable condition and
application of CSSI (Cubic Smoothing Spline Interpolation) for
estimating stress distribution. Estimation of stress distribution for the
structural member or the whole structure is one of the important
factors for safety evaluation of the structure. Existing sensors which
include ESG (Electric strain gauge) and LVDT (Linear Variable
Differential Transformer) can be categorized as contact type sensor
which should be installed on the structural members and also there are
various limitations such as the need of separate space where the
network cables are installed and the difficulty of access for sensor
installation in real buildings. To overcome these problems inherent in
the contact type sensors, TLS system of LiDAR (light detection and
ranging), which can measure the displacement of a target in a long
range without the influence of surrounding environment and also get
the whole shape of the structure, has been applied to the field of
structural health monitoring. The important characteristic of TLS
measuring is a formation of point clouds which has many points
including the local coordinate. Point clouds are not linear distribution
but dispersed shape. Thus, to analyze point clouds, the interpolation is
needed vitally. Through formation of averaged lattices and CSSI for
the raw data, the method which can estimate the displacement of
simple beam was developed. Also, the developed method can be
extended to calculate the strain and finally applicable to estimate a
stress distribution of a structural member. To verify the validity of the
method, the loading test on a simple beam was conducted and TLS
measured it. Through a comparison of the estimated stress and
reference stress, the validity of the method is confirmed.
[1] H.M. Lee and H.S. Park, “Measurement of maximum strain of steel beam
structures based on Average Strains from Vibrating Wire Strain Gages,”
Experimental Techniques, Wiley-Blackwell, vol. 37, Issue 2 23-29, 2013.
[2] H.S. Park, K.H. Park, Y.S. Kim and S.W. Choi, “Deformation Monitoring
of a Building Structure Using a Motion Capture System,” IEEE/ASME
Transactions on Mechatronics, IEEE, 1-9, 2014.
[3] Thomas Schäfer, Thomas Weber, Peter Kyrinovič and Miriam
Zámečniková, “Deformation Measurement Using Terrestrial Laser
Scanning at the Hydropower Station of Gabcikovo,”, INGEO 2004 and
FIG Regional Central and Eastern European Conference on Engineering
Surveying, Bratislava, 11-13 November, 2004, 10p.
[4] H. M. Lee and H. S. Park, “Estimation of Deformed Shapes of Beam
Structures using 3D Coordinate Information from Terrestrial Laser
Scanning,”, Computer Modeling in Engineering & Sciences, vol. 29, pp.
29-44, 2008.
[5] H. M. Lee and H. S. Park, “Gage-Free Stress Estimation of a Beam-like
Structure based on Terrestrial Laser Scanning,”, Computer Aided Civil
and Infrastructure Engineering, Wiley-Blackwell, vol. 26, Issue 8,
647-658,2011.
[1] H.M. Lee and H.S. Park, “Measurement of maximum strain of steel beam
structures based on Average Strains from Vibrating Wire Strain Gages,”
Experimental Techniques, Wiley-Blackwell, vol. 37, Issue 2 23-29, 2013.
[2] H.S. Park, K.H. Park, Y.S. Kim and S.W. Choi, “Deformation Monitoring
of a Building Structure Using a Motion Capture System,” IEEE/ASME
Transactions on Mechatronics, IEEE, 1-9, 2014.
[3] Thomas Schäfer, Thomas Weber, Peter Kyrinovič and Miriam
Zámečniková, “Deformation Measurement Using Terrestrial Laser
Scanning at the Hydropower Station of Gabcikovo,”, INGEO 2004 and
FIG Regional Central and Eastern European Conference on Engineering
Surveying, Bratislava, 11-13 November, 2004, 10p.
[4] H. M. Lee and H. S. Park, “Estimation of Deformed Shapes of Beam
Structures using 3D Coordinate Information from Terrestrial Laser
Scanning,”, Computer Modeling in Engineering & Sciences, vol. 29, pp.
29-44, 2008.
[5] H. M. Lee and H. S. Park, “Gage-Free Stress Estimation of a Beam-like
Structure based on Terrestrial Laser Scanning,”, Computer Aided Civil
and Infrastructure Engineering, Wiley-Blackwell, vol. 26, Issue 8,
647-658,2011.
@article{"International Journal of Architectural, Civil and Construction Sciences:70480", author = "Sang Wook Park and Jun Su Park and Byung Kwan Oh and Yousok Kim and Hyo Seon Park", title = "The Estimation Method of Stress Distribution for Beam Structures Using the Terrestrial Laser Scanning", abstract = "This study suggests the estimation method of stress
distribution for the beam structures based on TLS (Terrestrial Laser
Scanning). The main components of method are the creation of the
lattices of raw data from TLS to satisfy the suitable condition and
application of CSSI (Cubic Smoothing Spline Interpolation) for
estimating stress distribution. Estimation of stress distribution for the
structural member or the whole structure is one of the important
factors for safety evaluation of the structure. Existing sensors which
include ESG (Electric strain gauge) and LVDT (Linear Variable
Differential Transformer) can be categorized as contact type sensor
which should be installed on the structural members and also there are
various limitations such as the need of separate space where the
network cables are installed and the difficulty of access for sensor
installation in real buildings. To overcome these problems inherent in
the contact type sensors, TLS system of LiDAR (light detection and
ranging), which can measure the displacement of a target in a long
range without the influence of surrounding environment and also get
the whole shape of the structure, has been applied to the field of
structural health monitoring. The important characteristic of TLS
measuring is a formation of point clouds which has many points
including the local coordinate. Point clouds are not linear distribution
but dispersed shape. Thus, to analyze point clouds, the interpolation is
needed vitally. Through formation of averaged lattices and CSSI for
the raw data, the method which can estimate the displacement of
simple beam was developed. Also, the developed method can be
extended to calculate the strain and finally applicable to estimate a
stress distribution of a structural member. To verify the validity of the
method, the loading test on a simple beam was conducted and TLS
measured it. Through a comparison of the estimated stress and
reference stress, the validity of the method is confirmed.", keywords = "Structural health monitoring, terrestrial laser
scanning, estimation of stress distribution, coordinate transformation,
cubic smoothing spline interpolation.", volume = "9", number = "7", pages = "847-4", }