The assessment of deep excavation performance of a high rise residential complex, in Bayrakli, Izmir

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2022-6-10

Author

Turgut, Atalay Mert

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The need to deep excavation projects is increasing with urbanization. Consistently the excavation depths are also increasing. Therefore, the optimum design of the excavation system becomes more important. An optimum design of an excavation system can be developed with the selection of a suitable excavation system in terms of quality, duration, and cost and with the estimation of representative soil properties. On the other hand, the cost of the deep excavation systems has become a significant portion of the overall project budget. The Single Bore Multiple Anchor (SBMA) system is an important development in the ground anchor industry to make the optimum design. A deep excavation system of a high-rise building constructed in Bayraklı, İzmir, is examined in this study. The high-rise building consists of three blocks: A, B, and C. A total of 20 cone penetration tests (CPT) and 25 boreholes were performed for the site investigation. The deep excavation system was monitored with 18 inclinometers and 9 load cells. The construction area is divided into seven regions, and each region is studied separately for the estimation of soil parameters and the finite element analysis with Plaxis 2D. Each inclinometer reading is compared with analysis results. Estimated soil parameters are calibrated through scaling of the stiffness separately for cohesionless and cohesive soil layers. As a result, it is shown that the adopted assessment scheme provides reasonable agreement with field inclinometer readings; which are also concluded to be consistent with recommendations available in the literature.

Subject Keywords

Deep Excavation, Finite Element Method, Back Analysis, SBMA, Plaxis 2D

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https://hdl.handle.net/11511/97734

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

A. M. Turgut, “The assessment of deep excavation performance of a high rise residential complex, in Bayrakli, Izmir,” M.S. - Master of Science, Middle East Technical University, 2022.