← Back to Gallery

Characterizing Building Dynamics During the 2024 Hualien Earthquake Sequence Using the Quake Structural Integrity System (QSIS)

The April 2024 Hualien Earthquake sequence presented a significant opportunity to evaluate the performance of the Quake Structural Integrity System (QSIS), a sophisticated structural health and seismic monitoring technology, under real seismic events. QSIS integrates cost-effective MEMS accelerometers with advanced cloud computing to analyze seismic data and characterize building dynamics in real time. We will cover the deployment of QSIS at 70 sites across Taiwan, including diverse building forms ranging from residential blocks to the iconic Taipei 101. The system utilized PhidgetSpatial sensors coupled with Raspberry Pi microprocessors to capture the earthquake's intense motions with exceptional precision.

During the seismic events, QSIS collected detailed three-component acceleration data crucial for evaluating the structural integrity of different building types. It utilized automated methods to rapidly assess building dynamic characteristics, such as dominant resonance frequencies, damping ratios, and response patterns, enhancing our understanding of seismic wave interactions within structures. These insights into the buildings’ dynamic behaviors and potential vulnerabilities will be highlighted through the presentation of our results.

We will highlight the essential role of innovative technologies like QSIS in seismic engineering, especially in areas frequently affected by earthquakes. We will discuss QSIS’s implementation during the Hualien Earthquake sequence and propose potential system enhancements to improve seismic risk mitigation efforts in the future.

Session: The 3 April 2024 Magnitude 7.4 and 6.4 Earthquakes and Aftershock Sequence Near Hualien City, Eastern Taiwan - I

Type: Oral

Room: Tikahtnu Ballroom B

Date: 5/3/2024

Presentation Time: 11:30 AM (local time)

Presenting Author: Utpal Kumar

Student Presenter: No

Additional Authors