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A platform for research: civil engineering, architecture and urbanism
Probabilistic Assessment of the Liquefaction Hazard in Central Khartoum, Sudan
This paper presents a preliminary evaluation to the risk of earthquake-induced liquefaction in central Khartoum, Sudan. Khartoum is the capital city of the country, it is located in the confluence of the white and blue Niles. The city is very crowded. Even though the area is endured in an intraplate region which is seismically stable, there is a noticeable occurrence of many earthquakes in different regions in the country with the absence of a seismic code or any compliances in the constructions for earthquake loading. Central Khartoum with many high-rise buildings serves as the center for both business and important governmental agencies is characterized by alluvial deposits-locally known as Gezira formation-underlined by Nubian sandstone below at about 25 m depth. This alluvial deposit is consisted of saturated loose to medium dense sands. The study starts with a brief review of the Seismotectonics features of Sudan. Then, sources of earthquakes affecting central Khartoum were identified. The rifts and faults in Abu Dulayq region was found to affect central Khartoum the most. Based on probabilistic analysis, the seismic hazard in central Khartoum was assessed. Using the simplified procedure developed by Seed and Idriss, the study assessed the susceptibility of central Khartoum soils by coupling of seismic hazard and conditional probability of liquefaction. The study explicated that liquefaction risk is low.
Probabilistic Assessment of the Liquefaction Hazard in Central Khartoum, Sudan
This paper presents a preliminary evaluation to the risk of earthquake-induced liquefaction in central Khartoum, Sudan. Khartoum is the capital city of the country, it is located in the confluence of the white and blue Niles. The city is very crowded. Even though the area is endured in an intraplate region which is seismically stable, there is a noticeable occurrence of many earthquakes in different regions in the country with the absence of a seismic code or any compliances in the constructions for earthquake loading. Central Khartoum with many high-rise buildings serves as the center for both business and important governmental agencies is characterized by alluvial deposits-locally known as Gezira formation-underlined by Nubian sandstone below at about 25 m depth. This alluvial deposit is consisted of saturated loose to medium dense sands. The study starts with a brief review of the Seismotectonics features of Sudan. Then, sources of earthquakes affecting central Khartoum were identified. The rifts and faults in Abu Dulayq region was found to affect central Khartoum the most. Based on probabilistic analysis, the seismic hazard in central Khartoum was assessed. Using the simplified procedure developed by Seed and Idriss, the study assessed the susceptibility of central Khartoum soils by coupling of seismic hazard and conditional probability of liquefaction. The study explicated that liquefaction risk is low.
Probabilistic Assessment of the Liquefaction Hazard in Central Khartoum, Sudan
Lecture Notes in Civil Engineering
Sitharam, T. G. (editor) / Kolathayar, Sreevalsa (editor) / Sharma, Mukat Lal (editor) / Ahmed, Mohammed T. M. (author) / Mahmoud, Mohamedelamin M. M. (author)
2021-03-23
10 pages
Article/Chapter (Book)
Electronic Resource
English
Probabilistic evaluation of liquefaction potential of Central Khartoum
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