Probabilistic methods for the estimation of seismic Fa and Fv maps—application to Montreal

详细信息    查看全文

• 作者：Mohammad Kamruzzaman Talukder ; Luc Chouinard
• 关键词：Shear wave velocity ; Vs30 microzonation ; Foundation factors ; Site fundamental frequency ; Conditional second moment method ; Probabilistic site classification
• 刊名：Bulletin of Earthquake Engineering
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：14
• 期：2
• 页码：345-372
• 全文大小：8,985 KB
• 参考文献：Ansal A, Tönük GOE, Kurtulus A (2009) Microzonation for urban planning. In: Earthquakes and Tsunamis, Civil engineering disaster mitigation activities implementing millennium development goals, vol 11. Springer, pp 133–152
  Ansal A, Kurtulus A, Tonuk G (2010). Seismic microzonation and earthquake damage scenarios for urban areas. Soil Dyn Earthq Eng 30(11):1319–1328
  Castellaro S, Mulargia F (2009) Vs30 estimates using constrained H/V measurements. Bull Seismol Soc Am 99(2A):761–773CrossRef
  Chouinard L, Rosset P (2011). Microzonation of Montreal, variability in soil classification. In: 4th IASPEI/IAEE international symposium, University of California Santa Barbara
  Cox BR, Bachhuber J, Rathje E, Wood CM, Dulberg R, Kottke A, Green RA, Olson SM (2011) Shear wave velocity- and geology-based seismic microzonation of Port-au-Prince, Haiti. Earthq Spectra 27(Suppl. 1):S67–S92. doi:10.​1193/​1.​3630226 CrossRef
  Ditlevsen O, Madsen H (1996) Structural reliability methods. Wiley, New York
  ESRI (2010) ArcMap 10.1. ESRI (Environmental Systems Resource Institute), Redlands, CA
  Holzer TL, Padovani AC, Bennett MJ, Noce TE III, Tinsley JC (2005) Mapping NEHRP Vs(30) site classes. Earthq Spectra 21(2):1–18 CrossRef
  Hunter JA, Crow HL (2012) Shear wave velocity measurement guidelines for Canadian seismic site characterization in soil and rock. Geol Surv Can Open File. doi:10.​4095/​291753
  Hunter JA, Crow HL, Brooks GR, Pyne M, Motazedian D, Lamontagne M, Pugin AJ-M, Pullan SE, Cartwright T, Douma M, Burns RA, Good RL, Kaheshi-Banab K, Caron R, Kolaj M, Folahan I, Dixon L, Dion K, Duxbury A, Landriault A et al (2010) Seismic site classification and site period mapping in the Ottawa area using geophysical methods. Geological Survey of Canada, Open File 6273
  Kilic H, Ozener PT, Ansal A, Yildirim M, Ozaydin K, Adatepe S (2006) Microzonation of Zeytinburnu region with respect to soil amplification: a case study. Eng Geol 86(4):238–255CrossRef
  Motazedian D, Hunter JA, Pugin A, Crow H (2011) Development of a Vs30 (NEHRP) map for the city of Ottawa, Ontario, Canada. Can Geotech J 48(3):458–472. doi:10.​1139/​T10-081 CrossRef
  NBCC (2010) National Building Code of Canada 2010. National Research Council of Canada, Ottawa
  Prest VK, Hode-Keyser J (1977) Geology and engineering characteristics of surficial deposits: Montreal Island and Vicinity, Quebec. Geological Survey of Canada, Ottawa, Energy, Mines and Resources CanadaCrossRef
  Rosset P, Bour-Belvaux M, Chouinard L (2014) Microzonation models for Montreal with respect to Vs30. Bull Earthq Eng 13:2225–2239CrossRef
  Thompson EM, Baise LG, Kayen RE (2007) Spatial correlation of shear-wave velocity in the San Francisco Bay Area sediments. Soil Dyn Earthq Eng 27(2):144–152CrossRef
  Wald DJ, McWhirter L, Thompson E, Hering AS (2011) A new strategy for developing Vs30 maps. In: 4th IASPEI/IAEE international symposium. Effects of Surface Geology on Seismic Motion, University of Santa Barbara
  Wills CJ, Clahan KB (2006) Developing a map of geologically defined site-condition categories for California. Bull Seismol Soc Am 96(4A):1483–1501. doi:10.​1785/​0120050179 CrossRef
  Wills CJ, Silva W (1998) Shear-wave velocity characteristics of geologic units in California. Earthq Spectra 14(3):533–556 CrossRef
  Wills CJ, Petersen M, Bryant WA, Reichle M, Saucedo GJ, Tan S, Taylor G, Treiman J (2000) A site-conditions map for California based on geology and shear-wave velocity. Bull Seismol Soc Am 9(6B):S187–S208CrossRef
  
• 作者单位：Mohammad Kamruzzaman Talukder (1)
  Luc Chouinard (1)
  
  1. Department of Civil Engineering and Applied Mechanics, McGill University, Montreal, Canada
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Geotechnical Engineering
  Civil Engineering
  Geophysics and Geodesy
  Hydrogeology
  Structural Geology
  
• 出版者：Springer Netherlands
• ISSN：1573-1456

文摘

In most national building codes, site classification is based on the V_s30 parameter, the average shear wave velocity for the first 30 m of soil below the surface, and defines amplification factors (e.g. F_a and F_v) to be applied to ground motions for a reference condition. Seismic microzonation mapping is usually achieved by combining information from various sources, each with varying degrees of uncertainties. A preliminary microzonation can be derived from surface geology or surface elevation maps, while a more detailed and accurate map is usually based on extensive seismic surveys. A procedure is proposed that progressively allows the integration of information from various sources and to estimate the degree of uncertainty on the microzonation. This allows planners to determine where microzonation maps require further investigations given current or future urban development plans. The proposed procedure uses conditional second moment estimation and provides the best linear unbiased estimates of V_s30 and its uncertainty. Next, these estimates are used to derive soil classification probability maps and to compute the expected values and variance of soil amplification factors F_a ad F_v to be used in probabilistic seismic risk analyses. The proposed procedure is demonstrated for the seismic microzonation of the island of Montreal.