| dc.description.abstract | The region around Taiwan is known for high seismicity, which has caused serious losses over the years, such as the 2016 southern Taiwan earthquake and 2018 Hualien earthquake. As a result, Central Weather Bureau (CWB) has set up more than 800 seismic stations scattering in Taiwan and obtained a number of original earthquake records. In this study, we used these records to establish a ground motion database.
The ground motion database developed by Pacific Earthquake Engineering Research center (PEER) is most commonly used nowadays, and the key input is a target response spectrum. Our ground motion database allows users to search for ground motions with a given cumulative absolute velocity (CAV). In contrast to peak ground acceleration (PGA) and Arias intensity (AI), CAV is a relatively new intensity measure, which is dependent on the whole duration of the ground motion. Recently, many studies have shown that CAV and the variants with acceleration threshold, CAVthreshold, are more indicative of structure damage than PGA. The database in this study provides 1327 strong ground motions, which can be adopted in the following research.
According to the ground motion data, the regressions between intensity measures reveal positive correlations. In addition, the database can be applied on structure damage thresholds of CAVs in the 2016 southern Taiwan earthquake and 2018 Hualien earthquake, and as input data in the model deformation simulation utilizing ABAQUS. Both results show that CAV and CAVthreshold have obvious correlations with structure damage. Furthermore, the CAV thresholds of results can be the searching values in the database, and the corresponding ground motion data are inputs of the numerical simulation or experiment. | en_US |