Kalpakci, Volkan
Özkan, M. Yener
In this study, a simplified approach to the settlement estimation of piled rafts resting on over-consolidated clay deposits is presented. For this purpose, a series of plane-strain and three-dimensional analyses were performed and their results are compared with the available data in the literature. It was found that the percentage decrease in the total settlements with the addition of piles with respect to the unpiled case is very closely estimated by both the plane-strain and the three-dimensional, simplified, numerical analyses. Using this phenomenon, a simple method of analysis is suggested for the total settlement estimation of the piled raft foundations and design charts are provided for the cases studied (for the specific soil conditions only) throughout this study.


A Laboratory model study on settlement reduction effect of stone columns in soft clay
Sünnetçioğlu, Mehmet Emrah; Ergun, Mehmet Ufuk; Department of Civil Engineering (2012)
An experimental study was conducted in order to examine settlement reduction ratios of footing supported by both floating and end bearing type of stone columns. For the floating types, tests were done with varying column lengths of one and two widths of footing (L=B,2B). Tests were conducted in 200 mm* 200 mm* 200 mm cubic loading tanks. The reinforcement effect was achieved by the installation of four stone columns with 20 mm diameter under 70 mm* 70mm model footing. Parameters such as area replacement rat...
A Nonlinear Site-Amplification Model for the Next Pan-European Ground-Motion Prediction Equations
Sandikkaya, M. Abdullah; Akkar, Dede Sinan; Bard, Pierre-Yves (Seismological Society of America (SSA), 2013-02-01)
A site-amplification model for shallow crustal regions that considers both linear and nonlinear soil effects is proposed. The original functional form of the model was developed by Walling et al. (2008) (WAS08) using stochastic simulations and site-response analysis. The major difference between the proposed model and WAS08 is that our site-amplification expression is entirely based on empirical data. To comply with this objective, a database with the most recent V-S30 information from the pan-European regi...
A sequence stratigraphic approach to the depositional history analysis of the upper eocene sedimentary succession, northwest of the thrace basin, Turkey
Sünnetçioğlu, Mehmet Akif; Altıner, Demir; Department of Geological Engineering (2008)
This study investigates the depositional history of the Late Eocene sedimentary record in the northwest of the Thrace Basin in a sequence stratigraphic approach and estimates the contribution of regional tectonics, basin physiography and eustasy. Late Eocene sedimentary succession was analyzed in two third-order sequences based on two major data sets; seismic reflection and well data sets. Depositional Sequence-1, represented by progradational stacking patterns, comprises the coarse-grained “Hamitabat” turb...
The modified Vlasov model on a nonhomogeneous and nonlinear soil layer
Isbuga, Volkan; Cerezci, Mehmet; Aşık, Mehmet Zülfü (2022-09-01)
© 2022 Elsevier LtdThis study presents a novel approach to account for the soil nonlinearity of nonhomogeneous soil deposits in foundation deflection analyses in the context of a modified Vlasov foundation model. We present an extension of the previously proposed formulation by developing a new formulation employing an improved algorithm that takes the modulus degradation curves at varying strain levels into account in an iterative manner. This new model, which takes the nonlinear soil behavior into account...
An Experimental Study on Compression and Shrinkage Behavior of Cement-Treated Marine Deposited Clays
Ekinci, Abdullah; Ince, Ceren; Ferreira, Pedro Miguel Vaz (2019-09-01)
Marine clay deposits are commonly found soils around the world. Owing to the high costs of material disposal and the associated environmental problems, there is a growing need to find an alternative solution to reusing unsuitable soils. In the current study, the shrinkage and compression behavior of marine deposited clays, a soil commonly found worldwide, has been studied using intact, reconstituted, and cement-treated samples. Additionally, the effect of cement inclusion was evaluated for dosages ranging f...
Citation Formats
V. Kalpakci and M. Y. Özkan, “A SIMPLIFIED APPROACH TO THE SETTLEMENT ESTIMATION OF PILED RAFTS,” ACTA GEOTECHNICA SLOVENICA, pp. 77–85, 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/54479.