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Estimating Site Fundamental Period from Shear‐Wave Velocity Profile

2018; Seismological Society of America; Volume: 108; Issue: 6 Linguagem: Inglês

10.1785/0120180103

1943-3573

Suyang Wang, Yang Shi, Wei‐Ping Jiang, Erlei Yao, Yu Miao,

Geotechnical Engineering and Underground Structures

Research Article| October 23, 2018 Estimating Site Fundamental Period from Shear‐Wave Velocity Profile Su‐Yang Wang; Su‐Yang Wang aHuazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, China, suyangwang@whu.edu.cn136991458@qq.comD201477785@hust.edu.cnmiaoyu@hust.edu.cn Search for other works by this author on: GSW Google Scholar Yang Shi; Yang Shi aHuazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, China, suyangwang@whu.edu.cn136991458@qq.comD201477785@hust.edu.cnmiaoyu@hust.edu.cn Search for other works by this author on: GSW Google Scholar Wei‐Ping Jiang; Wei‐Ping Jiang bInstitute of Engineering Mechanics, China Earthquake Administration, Xuefu Road 29, Harbin 150080, China, jiangweiping@stu.ouc.edu.cn Search for other works by this author on: GSW Google Scholar Er‐Lei Yao; Er‐Lei Yao aHuazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, China, suyangwang@whu.edu.cn136991458@qq.comD201477785@hust.edu.cnmiaoyu@hust.edu.cn Search for other works by this author on: GSW Google Scholar Yu Miao Yu Miao aHuazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, China, suyangwang@whu.edu.cn136991458@qq.comD201477785@hust.edu.cnmiaoyu@hust.edu.cn Search for other works by this author on: GSW Google Scholar Bulletin of the Seismological Society of America (2018) 108 (6): 3431–3445. https://doi.org/10.1785/0120180103 Article history first online: 23 Oct 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Tools Icon Tools Get Permissions Search Site Citation Su‐Yang Wang, Yang Shi, Wei‐Ping Jiang, Er‐Lei Yao, Yu Miao; Estimating Site Fundamental Period from Shear‐Wave Velocity Profile. Bulletin of the Seismological Society of America 2018;; 108 (6): 3431–3445. doi: https://doi.org/10.1785/0120180103 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search nav search search input Search input auto suggest search filter All ContentBy SocietyBulletin of the Seismological Society of America Search Advanced Search Abstract Fundamental period has been recently proposed to be an alternative to time‐averaged shear‐wave velocity to 30 m (⁠VS30⁠) and used as a proxy for site amplification in recent ground‐motion prediction equations. In this study, we propose a simple approach to construct continuous‐variation velocity models and present analytical‐numerical solutions to the fundamental period for the following three cases: (a) shear‐wave velocity increasing or decreasing linearly with depth, (b) shear‐wave velocity increasing as a power of depth, and (c) shear modulus increasing or decreasing linearly with depth. Eight practicable methods of estimating the period from shear‐wave velocity profile are also developed and discussed. The accuracy of the eight methods is evaluated by comparing the estimated values with the analytical solutions and empirical results. The results show that the linear velocity model method has high correlation coefficient and low standard deviation among the eight approximate methods for both the comparison between estimated and analytical periods and that between the estimated and empirical periods. In addition, we find that there is a significant improvement in the accuracy after modifying four times the total travel time (previous solution) as π times the total travel time (proposed solution) to give a preliminary estimation of fundamental period for profiles with at least two layers. You do not currently have access to this article.