Evaluating Earthquake Stability of Solar Module Soundproofing Structure by 3D Numerical Analysis
- Authors
- Kwon, Sun Yong; Kim, Jongkwan; Yoo, Mintaek
- Issue Date
- Dec-2023
- Publisher
- MDPI
- Keywords
- double-sided solar-module-integrated sound barrier wall structure; dynamic behavior evaluation; existing sound barrier wall structure; numerical analysis; seismic stability
- Citation
- Buildings, v.13, no.12
- Journal Title
- Buildings
- Volume
- 13
- Number
- 12
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/90078
- DOI
- 10.3390/buildings13123075
- ISSN
- 2075-5309
2075-5309
- Abstract
- In this study, dynamic numerical analysis was conducted on the existing sound barrier wall structure and the recently developed double-sided solar-module-integrated sound barrier wall structure using the finite-difference method for numerical modeling. A seismic safety evaluation was performed based on a series of numerical analysis results. Both structures were modeled using a 3D modeling technique with FLAC 3D to account for differences in lateral stiffness. For seismic considerations, the Pohang seismic wave was selected to represent short-period earthquakes in line with Korea’s seismic characteristics. Additionally, the Hachinohe seismic wave was chosen to simulate long-period earthquakes and consider the effects of the seismic period. To calculate the input seismic waves based on the ground response, a site response analysis was conducted for a site designated for demonstrating a double-sided solar module-integrated sound barrier wall structure in Korea. The analysis reveals that the existing structure maintains overall structural integrity and ensures the safety of solar modules even in an earthquake with a return period of 2400 years. However, for a solar module-integrated sound barrier wall structure, stresses exceeding the compressive strength of the solar module occur in earthquakes with a return period exceeding 1000 years, necessitating additional design and reinforcement for preparation.
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