Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
Structural Engineering and Mechanics Volume 78, Number 3, May10 2021 , pages 333-350 DOI: https://doi.org/10.12989/sem.2021.78.3.333 |
|
|
Seismic fragility analysis of sliding artifacts in nonlinear artifact-showcase-museum systems |
||
Pei Liu, Zhi-Hao Li and Wei-Guo Yang
|
||
Abstract | ||
Motivated by the demand of seismic protection of museum collections and development of performance-based seismic design guidelines, this paper investigates the seismic fragility of sliding artifacts based on incremental dynamic analysis and three-dimensional finite element model of the artifact-showcase-museum system considering nonlinear behavior of the structure and contact interfaces. Different intensity measures (IMs) for seismic fragility assessment of sliding artifacts are compared. The fragility curves of the sliding artifacts in both freestanding and restrained showcases placed on different floors of a four-story reinforced concrete frame structure are developed. The seismic sliding fragility of the artifacts within a real-world museum subjected to bi-directional horizontal ground motions is also assessed using the proposed IM and engineering demand parameter. Results show that the peak floor acceleration including only values initiating sliding is an efficient IM. Moreover, the sliding fragility estimate for the artifact in the restrained showcase increases as the floor level goes higher, while it may not be true in the freestanding showcase. Furthermore, the artifact is more prone to sliding failure in the restrained showcase than the freestanding showcase. In addition, the artifact has slightly worse sliding performance subjected to bi-directional motions than major-component motions. | ||
Key Words | ||
seismic fragility; sliding rigid block; artifact-showcase-museum system; incremental dynamic analysis; intensity measurement; bi-directional horizontal ground motions | ||
Address | ||
Pei Liu, Zhi-Hao Li and Wei-Guo Yang: School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China | ||