Ding J L,Zhou Y,Hao B,Li Y D,Zhou Z H,Wei L,Wei X,Song J M. 2023. Analysis on local site characteristics of Longtoushan Town based on microtremor spectral ratio. Acta Seismologica Sinica45(4):717−726. DOI: 10.11939/jass.20220033
Citation: Ding J L,Zhou Y,Hao B,Li Y D,Zhou Z H,Wei L,Wei X,Song J M. 2023. Analysis on local site characteristics of Longtoushan Town based on microtremor spectral ratio. Acta Seismologica Sinica45(4):717−726. DOI: 10.11939/jass.20220033

Analysis on local site characteristics of Longtoushan Townbased on microtremor spectral ratio

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  • Received Date: March 17, 2022
  • Revised Date: July 14, 2022
  • Available Online: June 29, 2023
  • Published Date: July 14, 2023
  • The ground pulse method has been widely used in site characteristic analysis. Based on the site characteristic ground pulse of the old administrative-office zone, the old blocks and Luomakou Village of Longtoushan Town in Ludian County, and combined with the building structure features, local site effect and earthquake damage in each area, the results show that each test area has significant site amplification effect and directional differences; there are certain differences between the reference point spectral ratio method and the H/V spectral ratio method, but the dominant frequency bands of the two methods are basically consistent; the serious earthquake damage of brick concrete structure in old administrative-office zone and old blocks is caused by the coaction of significant amplification effect and resonance effect of the site; the earthquake damage of civil and earth rock structures in the old blocks and Luomakou Village is also serious, which is mainly caused by the site amplification effect.
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