How well can we evaluate post-earthquake building safety using low-cost MEMS seismometers
Journal
Proceedings of the 7th Asia-Pacific Workshop on Structural Health Monitoring, APWSHM 2018
Pages
866-877
Date Issued
2018
Author(s)
Abstract
The earthquake early warning (EEW) research group at National Taiwan University have been developing a micro electro mechanical systems type of accelerometer named P-Alert designed for EEW purpose. The main advantage of P-Alert is that it is a relatively low-cost seismometer. On the other hand, due to the high price of commercial hardware of structural health monitoring (SHM) systems, the application of SHM to buildings is limited. In order to understand the performance of post-earthquake building safety evaluation of buildings using P-Alert, a series of steel frames shaking table tests with incremental damage extent are conducted. The fragility curves of different damage levels and inter-story drift ratios calculated by measured acceleration of each story using double integration and filter are used to estimate possibility of damage levels. It is concluded that acceptable detection of damage existence of the whole building is possible. With improvement of synchronization of P-Alert sensors, damage localization of stories of the building is also anticipated. ? APWSHM 2018. All rights reserved.
Subjects
Buildings; Costs; Damage detection; Earthquakes; MEMS; Seismographs; Damage localization; Earthquake early warning; Inter-story drift ratios; Low costs; Micro electro mechanical system; National Taiwan University; Shaking table tests; Structural health monitoring (SHM); Structural health monitoring
SDGs
Type
conference paper