{"title":"基于冲击波形分解法的设计响应谱","authors":"","doi":"10.1016/j.soildyn.2024.108889","DOIUrl":null,"url":null,"abstract":"<div><p>This study applies the shock-waveform (SW) decomposition method, originally developed for mechanical shock analysis, to earthquake ground motions. It reveals a general shape similarity between the envelope of the Pseudo-Spectral Accelerations (PSAs) of SW decomposed components and the PSA of the corresponding ground motion. Based on this similarity, a novel method to determine the characteristic period <span><math><mrow><msub><mi>T</mi><mi>g</mi></msub></mrow></math></span>, the long-period transition period <span><math><mrow><msub><mi>T</mi><mi>D</mi></msub></mrow></math></span>, the shape correction period <span><math><mrow><msub><mi>T</mi><mi>β</mi></msub></mrow></math></span>, and the Design Response Spectrum (DRS) is proposed and evaluated. New methods to determine <span><math><mrow><msub><mi>T</mi><mi>g</mi></msub></mrow></math></span>, <span><math><mrow><msub><mi>T</mi><mi>D</mi></msub></mrow></math></span> and <span><math><mrow><msub><mi>T</mi><mi>β</mi></msub></mrow></math></span> from the signal decomposition perspective are integrated into the normalized DRS in Eurocode 8–2022, enabling the construction of the normalized DRS based on SW method (SWDRS). Furthermore, simple ground motion attenuation regression equations are derived to relate the parameters (<span><math><mrow><msub><mi>T</mi><mi>g</mi></msub></mrow></math></span>, <span><math><mrow><msub><mi>T</mi><mi>D</mi></msub></mrow></math></span>, <span><math><mrow><msub><mi>T</mi><mi>β</mi></msub></mrow></math></span>) and the corresponding spectral ordinates of the normalized SWDRS model with seismic magnitude and site conditions. The SWDRS model is validated by randomly selecting two sites in United States. For each site, the SWDRS is determined by using the attenuation regression equations and the DRS spectral plateau value from the official seismic hazard map. Comparisons between the SWDRS, the latest local DRS, and the severest historical PSA recorded at the specific site demonstrate that the SWDRS provides more accurate spectral values over intermediate- and long-period ranges for structural seismic design.</p></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":null,"pages":null},"PeriodicalIF":4.2000,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S026772612400441X/pdfft?md5=111bfd7f7a6648d9af1363b541970b4f&pid=1-s2.0-S026772612400441X-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Design response spectrum based on shock-waveform decomposition method\",\"authors\":\"\",\"doi\":\"10.1016/j.soildyn.2024.108889\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This study applies the shock-waveform (SW) decomposition method, originally developed for mechanical shock analysis, to earthquake ground motions. It reveals a general shape similarity between the envelope of the Pseudo-Spectral Accelerations (PSAs) of SW decomposed components and the PSA of the corresponding ground motion. Based on this similarity, a novel method to determine the characteristic period <span><math><mrow><msub><mi>T</mi><mi>g</mi></msub></mrow></math></span>, the long-period transition period <span><math><mrow><msub><mi>T</mi><mi>D</mi></msub></mrow></math></span>, the shape correction period <span><math><mrow><msub><mi>T</mi><mi>β</mi></msub></mrow></math></span>, and the Design Response Spectrum (DRS) is proposed and evaluated. New methods to determine <span><math><mrow><msub><mi>T</mi><mi>g</mi></msub></mrow></math></span>, <span><math><mrow><msub><mi>T</mi><mi>D</mi></msub></mrow></math></span> and <span><math><mrow><msub><mi>T</mi><mi>β</mi></msub></mrow></math></span> from the signal decomposition perspective are integrated into the normalized DRS in Eurocode 8–2022, enabling the construction of the normalized DRS based on SW method (SWDRS). Furthermore, simple ground motion attenuation regression equations are derived to relate the parameters (<span><math><mrow><msub><mi>T</mi><mi>g</mi></msub></mrow></math></span>, <span><math><mrow><msub><mi>T</mi><mi>D</mi></msub></mrow></math></span>, <span><math><mrow><msub><mi>T</mi><mi>β</mi></msub></mrow></math></span>) and the corresponding spectral ordinates of the normalized SWDRS model with seismic magnitude and site conditions. The SWDRS model is validated by randomly selecting two sites in United States. For each site, the SWDRS is determined by using the attenuation regression equations and the DRS spectral plateau value from the official seismic hazard map. Comparisons between the SWDRS, the latest local DRS, and the severest historical PSA recorded at the specific site demonstrate that the SWDRS provides more accurate spectral values over intermediate- and long-period ranges for structural seismic design.</p></div>\",\"PeriodicalId\":49502,\"journal\":{\"name\":\"Soil Dynamics and Earthquake Engineering\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.2000,\"publicationDate\":\"2024-08-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S026772612400441X/pdfft?md5=111bfd7f7a6648d9af1363b541970b4f&pid=1-s2.0-S026772612400441X-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Soil Dynamics and Earthquake Engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S026772612400441X\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, GEOLOGICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Soil Dynamics and Earthquake Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S026772612400441X","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, GEOLOGICAL","Score":null,"Total":0}
Design response spectrum based on shock-waveform decomposition method
This study applies the shock-waveform (SW) decomposition method, originally developed for mechanical shock analysis, to earthquake ground motions. It reveals a general shape similarity between the envelope of the Pseudo-Spectral Accelerations (PSAs) of SW decomposed components and the PSA of the corresponding ground motion. Based on this similarity, a novel method to determine the characteristic period , the long-period transition period , the shape correction period , and the Design Response Spectrum (DRS) is proposed and evaluated. New methods to determine , and from the signal decomposition perspective are integrated into the normalized DRS in Eurocode 8–2022, enabling the construction of the normalized DRS based on SW method (SWDRS). Furthermore, simple ground motion attenuation regression equations are derived to relate the parameters (, , ) and the corresponding spectral ordinates of the normalized SWDRS model with seismic magnitude and site conditions. The SWDRS model is validated by randomly selecting two sites in United States. For each site, the SWDRS is determined by using the attenuation regression equations and the DRS spectral plateau value from the official seismic hazard map. Comparisons between the SWDRS, the latest local DRS, and the severest historical PSA recorded at the specific site demonstrate that the SWDRS provides more accurate spectral values over intermediate- and long-period ranges for structural seismic design.
期刊介绍:
The journal aims to encourage and enhance the role of mechanics and other disciplines as they relate to earthquake engineering by providing opportunities for the publication of the work of applied mathematicians, engineers and other applied scientists involved in solving problems closely related to the field of earthquake engineering and geotechnical earthquake engineering.
Emphasis is placed on new concepts and techniques, but case histories will also be published if they enhance the presentation and understanding of new technical concepts.