Estimating the near-surface site response to mitigate earthquake disasters at the October 6th city, Egypt, using HVSR and seismic techniques

Mohamed, Abbas Ahmed; Hafiez, H. E. Abdel; Taha, M.A.

doi:10.1016/j.nrjag.2013.06.018

Cited by 10 publications

(2 citation statements)

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“…The most common approach for soil characterizations is based on drillings, excavations and laboratory analyses. The results obtained from these methods are sitespecific (Das and Basudhar, 2009;Robertson, 2009) and are limited to the tested point, which may be difficult to generalize the same result in the development of a very wider space of the area studied (Godio et al, 2006;Bizjak and Zupancic, 2009;Prasad et al, 2010;Mohamed et al, 2013a). Due to the heterogeneous nature of the subsurface, the results obtained for a point test on a site may not be the same for some other parts of the same site (Robertson, 1990;Miller et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Azwin et al (2013b) confirmed the possibility of applying seismic refraction method in the production of 2D profiles of the subsurface for site characterization. In a related development, Mohamed et al (2013a) buttressed that seismic method would be of great advantage for studying near surface site response in order to mitigate disasters. Although, the results of geotechnical methods may not be independently used for decision on construction of buildings, they can help to provide control and ground-truth information of the subsurface (Hunt, 2005;Lorenzo et al, 2014;Cai et al, 2014;Rumpf and Tronicke, 2014;Olatinsu et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of geotechnical parameters of reclaimed land from near-surface seismic refraction method

Adewoyin

Joshua

Akinyemi

et al. 2021

Heliyon

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Correct execution of civil engineering structures depends largely on the adequate and detailed mapping of the subsurface. This can be achieved by the application of appropriate geophysical or geotechnical methods in association with a detailed information on the geological sequence of the subsurface structure. In this study, a combination of near surface seismic refraction method, cone penetration test and borehole logs were used to obtain 2-dimensional (2D) information of the subsurface geological features. These methods were used to characterize the subsurface condition of a reclaimed land in Ajah area of Lagos for the purpose of construction. The seismic refraction method revealed three geologic layers with seismic velocities ranging between 258 and 3544 m/s. Additionally, the cone penetration test revealed that the geologic formation from the topsoil to a depth of 6 m was an alluvium of soft and highly compressible property. Furthermore, the percussion drilling test also confirmed the geologic formation from the topsoil to a depth of about 6 m to be highly compressible. However, a geologic formation with good geotechnical characteristics, such as a low compressibility potential, was encountered at a depth between 7 and 16 m, which coincides with the third layer of the seismic refraction method. The results of the three methods confirmed that the depth to most competent layer must be located before the foundations of engineering constructions are sited.

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