Preprint Article Version 1 This version is not peer-reviewed

Novel Visualization of Building Earthquake Response Recorded by a Dense Network of Sensors

Version 1 : Received: 7 November 2024 / Approved: 7 November 2024 / Online: 7 November 2024 (16:38:13 CET)

How to cite: Todorovska, M. I.; Cruz, L.; Trifunac, M. D.; Aihemaiti, A.; Lin, G.; Cui, J. Novel Visualization of Building Earthquake Response Recorded by a Dense Network of Sensors. Preprints 2024, 2024110553. https://doi.org/10.20944/preprints202411.0553.v1 Todorovska, M. I.; Cruz, L.; Trifunac, M. D.; Aihemaiti, A.; Lin, G.; Cui, J. Novel Visualization of Building Earthquake Response Recorded by a Dense Network of Sensors. Preprints 2024, 2024110553. https://doi.org/10.20944/preprints202411.0553.v1

Abstract

Strong motion records from full-scale structures provide the ultimate evidence of how real structures, in situ, respond to earthquakes. The most effective method for visualizing the recorded response is by animation. This paper presents a novel method for visualization of the motion of a building that is densely instrumented with triaxial accelerometers and rotational seismometers. The method is based on one- and two-dimensional biharmonic spline interpolation of the motion between multiple sensors on a floor or along the building height. It is demonstrated on a 50-story skyscraper uniquely instrumented with multiple triaxial accelerometers per floor, approximately at every five floors above ground and at two basement levels, and two borehole arrays measuring the motion of the soil very near the building foundation. The animations provide valuable insight into the three-dimensional structural response, including wave propagation through the structure and the interplay between translations and rotations, which will be useful for testing existing and developing new methods for structural health monitoring of buildings and for the further development of building design codes. Animations of selected earthquakes can be found on YouTube at @TPYC-seismic.

Keywords

dynamic surface deformation; biharmonic spline interpolation; visualization of observed earthquake response of buildings; animation of building response recorded by 3DOF and 6DOF sensors; densely instrumented buildings; Tongde Plaza Yue Center (TPYC) testbed structure

Subject

Engineering, Civil Engineering

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