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Rapid Decay of a Timber Footbridge and Changes in Its Modal Frequencies Derived from Multiannual Lateral Deflection Measurements
Publisher: American Society of Civil Engineers
Abstract: Lateral deflections of a timber pedestrian bridge in Patras, Greece, excited by pedestrians were measured using a robotic total station (RTS) in six annual surveys. Analysis of the data indicated a drop of 1.6 Hz in the ...
Dynamic Deflections of a Stiff Footbridge Using 100-Hz GNSS and Accelerometer Data
Publisher: American Society of Civil Engineers
Abstract: The authors investigated the possibility of expanding the application of global navigation satellite systems (GNSS) into the monitoring of stiff civil-engineering structures from the current limit of dominant frequencies ...
Landslide Monitoring Based On Geodetically Derived Distance Changes
Publisher: American Society of Civil Engineers
Abstract: Analysis of an exceptionally long and homogeneous geodetic monitoring record of a deep-seated, slow
Measuring Deflections of a Short-Span Railway Bridge Using a Robotic Total Station
Publisher: American Society of Civil Engineers
Abstract: A robotic total station (RTS) [or robotic theodolite or theodolite positioning system (TPS)] was used for the first time to measure the deflections of a short-span bridge in response to passing trains. The RTS measurements ...
Identification of Nearshore Wave Characteristics Using Robotic Total Stations
Publisher: American Society of Civil Engineers
Abstract: A new geodetic method for accurate determination of nearshore wave characteristics is proposed. This method is based on a robotic total station set on stable position on the coast and aiming at a passive reflector mounted ...
Errors Introduced by Fluctuations in the Sampling Rate of Automatically Recording Instruments: Experimental and Theoretical Approach
Publisher: American Society of Civil Engineers
Abstract: The sampling rate in automatically recording instruments is usually assumed stable. Small fluctuations in this rate have practically little influence on low recording rates, but they might be important in high rates for ...
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