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Accurate Estimation of Settlement Profile Behind Excavation Using Conditional Merging Technique
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 Title & Authors
Accurate Estimation of Settlement Profile Behind Excavation Using Conditional Merging Technique
Kim, Taesik; Jung, Young-Hoon;
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Ground deformation around construction site in urban area where typically adjacent structures are located needs to be strictly controlled. Accordingly, it is very important to precisely monitor the ground deformation. Settlement beacon is typically employed to measure the ground deformation, but meanwhile the rapid development in electronic technology enables 3D image scanner to become available for measuring the ground deformation profile in usual construction sites. With respect to the profile measurement, the 3D scanner has an advantage, whereas its accuracy is somewhat limited because it does not measure the displacement directly. In this paper, we developed a conditional merging technique to combine the ground displacement measured from settlement beacon and the profile measured by the 3D scanner. Synthetic ground deformation profile was generated to validate the proposed technique. It is found that the ground deformation measurement error can be reduced significantly via the conditional merging technique.
Settlement;Conditional merging;Excavation;3D scanner;
 Cited by
Finno, R. J. and Roboski, J. F. (2005), Three-dimensional responses of a tied-back excavation through clay, Journal of Geotechnical and Geoenvironmental Engineering, Vol. 131, No. 3, pp. 273-282. crossref(new window)

Hsieh, P-G. and Ou, C-Y. (1998), Shape of ground surface settlement profiles caused by excavation, Canadian Geotechnical Journal, Vol. 35, No. 6, pp. 1004-1017. crossref(new window)

Sinclair, S. and Pegram, G. (2005), Combining radar and rain gauge rainfall estimates using conditional merging, Atmospheric Science Letters, Vol. 6, No. 1, pp. 19-22. crossref(new window)