A Proposal of Damping Correction Formula Considering Period-dependent Characteristics of the Design Response Spectra of Long-period Ground Motions for the Hypothetical Nankai Trough Earthquake (part 2) : Damping Correction and Conversion Method for Acceleration and Displacement Responses in Long-period and High-damping Domains
Year: 2026
Type: article
Abstract: In 2016, a countermeasure against long-period ground motions from the Nankai Trough was announced. However, the response spectrum method specified in Ministry of Construction Notification No. 2009 was excluded from the countermeasure framework due to its inadequacy in representing the effects of long-period ground motions. Deficiencies in the damping correction formula, especially in specific period ranges, have also been identified. This study proposes a modified response spectrum method introducing separate damping correction formulas for displacement and acceleration responses, as different corrections are required for accurate prediction. The effectiveness of the proposed method is validated through comparison with the time-history analysis.
DOI: 10.3130/aijs.91.441
Institution: Meiji University
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W7147122281
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