Re-evaluation of liquefaction potentiality for selected Pre-liquefied sites associated with the 1992 Cairo earthquake
By: Abdel Hafiez, H. E
.
Contributor(s): Girgis, Milad | Toni, Mostafa.
Publisher: New York Springer 2018Edition: Vol. 48(3), September.Description: 474-483p.Subject(s): Civil EngineeringOnline resources: Click here
In:
Indian geotechnical journalSummary: A moderate earthquake (Ms = 5.8) was occurred on October 12, 1992 at about 25 km south west of Cairo city—Egypt. It caused large damage to numerous poorly constructed buildings. One of the important seismological phenomenon happened during the earthquake is the soil liquefaction which was associated usually with the occurrence of big sand-boils near the epicenter of the earthquake. Recently different methods are used to re-evaluate the liquefaction potentiality, in this study five different sites that showed high liquefaction potentiality during Cairo earthquake, have been selected to be studied to for re-evaluate liquefaction potentiality in Egypt. Shear wave velocity determination provides a promising tool to calculate the factor of safety (FS) against liquefaction, and resistance evaluation of sandy soils against this phenomenon. Multi-channel analysis of surface wave method as an efficient tool and is here used to infer the velocity profile at the considered sites to be used as input for the calculation of FS as an indication for liquefaction potentiality. The aim of this study is to determine the potentiality of liquefaction phenomenon in the selected sites to be one of soil characteristics input for any further hazard study. The selected five sites are named: Aquaz, Atf, Bedsa, El-Gammal, Zaweit Dahshour showed a liquefaction liquation during the 1992 Cairo earthquake which forced us to re-evaluate and update our knowledge through the recent technique about the liquefaction potentiality at these sites. The FS obtained by using shear wave was compared with the values obtained from SPT from previous studies.
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School of Engineering & Technology Archieval Section | Not for loan | 2018245 |
A moderate earthquake (Ms = 5.8) was occurred on October 12, 1992 at about 25 km south west of Cairo city—Egypt. It caused large damage to numerous poorly constructed buildings. One of the important seismological phenomenon happened during the earthquake is the soil liquefaction which was associated usually with the occurrence of big sand-boils near the epicenter of the earthquake. Recently different methods are used to re-evaluate the liquefaction potentiality, in this study five different sites that showed high liquefaction potentiality during Cairo earthquake, have been selected to be studied to for re-evaluate liquefaction potentiality in Egypt. Shear wave velocity determination provides a promising tool to calculate the factor of safety (FS) against liquefaction, and resistance evaluation of sandy soils against this phenomenon. Multi-channel analysis of surface wave method as an efficient tool and is here used to infer the velocity profile at the considered sites to be used as input for the calculation of FS as an indication for liquefaction potentiality. The aim of this study is to determine the potentiality of liquefaction phenomenon in the selected sites to be one of soil characteristics input for any further hazard study. The selected five sites are named: Aquaz, Atf, Bedsa, El-Gammal, Zaweit Dahshour showed a liquefaction liquation during the 1992 Cairo earthquake which forced us to re-evaluate and update our knowledge through the recent technique about the liquefaction potentiality at these sites. The FS obtained by using shear wave was compared with the values obtained from SPT from previous studies.
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