Modelling the time-dependent behaviour of soft soils

Abstract

<jats:title>Abstract</jats:title><jats:p>Time dependence of soft soils has already been thoroughly investigated. The knowledge on creep and relaxation phenomena is generally available in the literature. However, it is still rarely applied in practice. Regarding the organic soils, geotechnical engineers mostly base their calculations on the simple assumptions. Yet, as presented within this article, the rate-dependent behaviour of soft soils is a very special and important feature. It influences both the strength and the stiffness of a soil depending on time. It is, thus, significant to account for time dependence in the geotechnical design when considering the soft soils. This can result in a more robust and economic design of geotechnical structures. Hence, the up-to-date possibilities of regarding creep in practice, which are provided by the existing theories, are reviewed herein.</jats:p><jats:p>In this article, we first justify the importance of creep effects in practical applications. Next, we present the fundamental theories explaining the time-dependent behaviour of organic soils. Finally, the revision of the existing constitutive models that can be used in numerical simulations involving soft soils is introduced. Both the models that are implemented in the commercial geotechnical software and some more advanced models that take into account further aspects of soft soils behaviour are revised. The assumptions, the basic equations along with the advantages and the drawbacks of the considered models are described.</jats:p>

Forecasting the impact of buildings with multi-storey underground parts on the displacement of subsoil using modern numerical tools

“…The technology applied for foundation excavation works for low-slung structures and its impact on the subsoil displacement and determination of the soil parameters for the design of such buildings have been the subject of analyses presented in various scientific publications, including [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29].…”

Silt türü bir Zeminin Gerilme Rahatlaması üzerine Deneysel bir Çalışma

“…Ancak, zeminlerde gerilme rahatlaması sünmeye kıyasla daha az çalışılmış bir konudur. Zeminler sabit birim deformasyon altında bekletilmeleri durumunda taneli yapıda malzeme olmaları ve zamanla tane temas yüzeylerinde plastik deformasyon oluşması sebebiyle dışardan etkiyen gerilme değerlerinde önemli ölçüde azalma gösterebilmektedir (Lade et al, 2010;Yin et al, 2014;Staszewska and Cudny, 2020).…”