تلخیص
Physical infrastructure such as buildings and
bridges may seem stable but in fact they experience a variety of
perturbances. Such disturbances cause deformations in these
structures. Analysis of these deformations is necessary because
they may sometimes have fatal consequences. Deformations in
such structures may vary from centimeter level to meter level.
Techniques adopted to monitor structural deformations must
therefore be capable of sensing as small as centimeter level
variations.1
Usage of Network RTK positioning method to sense slight
deviations in the structure can produce exemplary results. Such a
network – known as Pak Rehber Precise Positioning Network –
has already been developed in Karachi. The research covered in
this paper highlights the utilization of Pak Rehber Precise
Positioning Network to continuously monitor the structural
deformation faced by bridges. The established system monitors
the deviation form the original position each second and plots
these deviations against time. If a threshold value od deviation is
crossed in any of the three directions (east, north, vertical), an
alarm can be generated and counter measures can be taken.
Syed Fawad Zulfiqar, Safder Khan, Iftikhar Khan, Syed Zahid Jamal. (2017) Monitoring Structural Deformations Using Network RTK, Journal of Space Technology , Volume 7, Issue 1.
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