Civil Engineering and Architecture Vol. 12(2), pp. 1165 - 1179
DOI: 10.13189/cea.2024.120235
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Study on Site Effect in Nanning City Using HVSR Method

Hongcheng Ma ^1,*, Boi-Yee Liao ^2
1 Department of Engineering, International College, Krirk University, Thailand
² Graduate Program of Engineering Technology Management, International College, Krirk University, Thailand

ABSTRACT

In order to obtain the site effects and sedimentary layer distribution in Nanning urban area, background noise observation was carried out in Nanning urban area from mid-2022 to early 2023. Using the ground pulsation observation records of 561 points with a distance of 500m in Nanning urban area, the distribution results of resonance frequency and magnification of site effects were obtained by HVSR method, and the sedimentary layer distribution in Nanning urban area was obtained by using the resonance frequency-sedimentary layer thickness conversion formula. In this work, the resonance frequency and amplification factor are comprehensively considered, and the K value distribution characterizing the damage degree of the site in Nanning Urban Area is obtained. The results show that the resonance frequency of Nanning urban area is 1~10Hz, and most areas are mainly concentrated in 1Hz; the thickness of Sedimentary Layer is smaller as a whole, mostly 10 ~ 40m, and some local areas are thicker, up to 40 ~ 100m; its overall damage degree is low, and very few areas exceed the safe value (K > 20), indicating that it is safe in earthquake disasters. The results are consistent with the surface topography and public borehole data, and can provide a basic reference for the expansion of the whole urban project and disaster prevention and reduction.

KEYWORDS
Nanning Urban Area, HVSR Method, Site Effect, Sedimentary Layer Distribution, Background Noise

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Hongcheng Ma , Boi-Yee Liao , "Study on Site Effect in Nanning City Using HVSR Method," Civil Engineering and Architecture, Vol. 12, No. 2, pp. 1165 - 1179, 2024. DOI: 10.13189/cea.2024.120235.

(b). APA Format:
Hongcheng Ma , Boi-Yee Liao (2024). Study on Site Effect in Nanning City Using HVSR Method. Civil Engineering and Architecture, 12(2), 1165 - 1179. DOI: 10.13189/cea.2024.120235.