Dr.-Ing. Marwan Alzaylaie
Senior Manager- Geotechnical
Dubai Development Authority
Conference Day Two: Tuesday, 22 October 2019
Tuesday, October 22nd, 2019
10:40 AM REGIONAL PRESENTATION: Analytical and FEM Evaluation of Liquefaction Potential: A case study of Pearl Jumeirah
Dubai is becoming an engineering hub for complex civil structures with considerable geotechnical considerations. Recently, sands from the Dubai waters are being dredged to form new artificial offshore structures. One such structures is the Pearl Jumeira extending from Jumeira Beach into the Arabian Gulf. Pearl Jumeira is approximately 8.3 million square feet of land with 3.0 million square feet of residential plots. The thickness of the reclamation fill varies across the site but is typically in the order of 10 m to 15 m and consists primarily of clean sand with lenses of silty materials followed by pre-reclamation seabed sand and silty materials of varying thicknesses underlain by rock formation. Potential for liquefaction is considered one of the most significant characteristics of reclaimed lands. This paper will discuss and compare the two common procedures adopted in the calculation of liquefaction potential: The Finite Element Method (FEM) and the analytical solution using the Seed & Idriss NCEER approach. The FEM method used will employ the use of MIDAS software with earthquake time-history. While the analytical approach will utilise the in-situ CPT and SPT test carried out pre- and post-improvement. Analytical solutions will be analysed using Cliq.