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Wind and Structures Volume 37, Number 2, August 2023 (Special Issue) pages 117-131 DOI: https://doi.org/10.12989/was.2023.37.2.117 |
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Updates of Korean Design Standard (KDS) on the wind load assessment and performance-based wind design |
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Han Sol Lee, Seung Yong Jeong and Thomas H.-K. Kang
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| Abstract | ||
| Korea Design Standard (KDS) will be updated with two major revisions on the assessment of wind load and performance-based wind design (PBWD). Major changes on the wind load assessment are the wind load factor and basic wind speed. Wind load factor in KDS is reduced from 1.3 to 1, and mean recurrence interval (MRI) for basic wind speed increases from 100 years to 500 years considering the reduction of wind load factor. Additional modification is made including pressure coefficient, torsional moment coefficient and spectrum, and aeroelastic instability. Combined effect of the updates of KDS code on the assessment of wind load is discussed with the case study on the specified sites and building. PBWD is newly added in KDS code to consider the cases with various target performance, vortex-induced vibration, aeroelastic instability, or inelastic behavior. Proposed methods and target performance for PBWD in KDS code are introduced. | ||
| Key Words | ||
| basic wind speed; KDS code; performance-based wind design; wind load reduction factor; wind load | ||
| Address | ||
| Han Sol Lee, Seung Yong Jeong and Thomas H.-K. Kang:Department of Architecture and Architectural Engineering & Institute of Engineering Research, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea | ||