Monitoring high-rise building deformation using Global Positioning System


Table 8: Baselines vector of both epochs
From To   Epoch 1     Epoch 2  
P 314 KT1 DX (m) D Y(m) DZ (m) DX (m) D Y (m) DZ (m)
585.672 1528.797 -752.439 585.675 1528.799 -752.443
  KT2 582.885 1523.076 -734.675 582.899 1523.079 -734.679
  KT3 585.530 1540.691 -728.575 585.543 1540.684 -728.578
  KT4 588.277 1546.479 -746.366 588.288 1546.471 -745.360
  KT5 374.730 1552.600 -801.175 374.733 1552.601 -801.176
  KT6 383.706 1638.951 -735.864 383.698 1638.952 -735.864
P288 KT1 2416.109 5043.989 -12923.731 2416.166 5043.981 -12923.715
  KT2 2413.366 5038.271 -12905.991 2413.416 5038.237 -12905.985
  KT3 2415.970 5055.878 -12899.891 2416.073 5055.839 -12899.883
  KT4 2418.837 5061.712 -12917.591 2418.715 5061.672 -12917.696
  KT5 2205.150 5067.818 -12972.515 2205.167 5067.794 -12972.515
  KT6 2214.345 5154.101 -12907.099 2214.066 5154.130 -12907.178


Table 9: The variance ratio and the congruency test result
Statistical testDay1Day2Day3
Variance ratio testPassedPassedPassed
Global congruency testPassedPassedPassed
 1.504 <1.9190.779 < 1.9190.008 < 1.919



Figure 6: The external reliability for both epochs



Figure 7: Difference of adjusted coordinate for both epoch


Table 10: Single point test result
StationDXDYDZDis. VectorFcomFtabStatus
KT1-0.0288-0.0053-0.02170.03640.214.51Stable
KT2-0.03010.0094-0.02220.03860.364.51Stable
KT3-0.09850.0211-0.02150.10303.084.51Stable
KT40.0031-0.00990.04680.04790.714.51Stable
KT5-0.04310.0136-0.02330.05081.134.51Stable
KT6
GPS314
0.1682
-0.0284
-0.0318
-0.0204
0.0239
-0.0509
0.1728
0.0618
2.61
3.70
4.51
4.51
Stable
Stable
P2880.02920.00320.01790.03440.694.51Stable

Acknowledgments
The preliminary work presented in this paper is part of the research project Vot 72308 sponsored by the Ministry of Science and Technology, Malaysia.

References
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  • Teskey, W.F. and Porter, T.R. (1988). ‘An Integrated Method For Monitoring The Deformation Behaviour Of Engineering Structures’. In. International (FIG) Symposium on Deformation Measurements (5 th : New Brunswick, Canada). (ed.) Well, W. and Chrzanowski, A. Canadian Symposium on Mining Surveying and Rock Deformation Measurements (5 th : New Brunswick, Canada). Deformation Measurements. New Brunswick: University of New Brunswick. 536–545.

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