Finite Element Modeling of Geotextile Reinforced Embankments on Soft Clay  

作　　者：Diaa W. El Hourani Ify L. Nwaogazie Godfrey Waribo TomJaja Diaa W. El Hourani;Ify L. Nwaogazie;Godfrey Waribo TomJaja(Center for Geotechnical & Coastal Engineering Research, University of Port Harcourt, Port Harcourt, Nigeria;Faculty of Engineering, Rivers State University, Port Harcourt, Nigeria)

机构地区：[1]Center for Geotechnical & Coastal Engineering Research, University of Port Harcourt, Port Harcourt, Nigeria [2]Faculty of Engineering, Rivers State University, Port Harcourt, Nigeria

出　　处：《Open Journal of Civil Engineering》2023年第1期48-57,共10页土木工程期刊（英文）

摘　　要：The use of geotextiles as a reinforcement material for improving the factor of safety against slope failure in embankments built on soft clay is becoming a common practice. This work is intended to help understand the effect of the geotextile reinforcement has on such embankments and to provide a design aid for civil engineers that enables them to quickly estimate the factor of safety against slope failure. Seventy four different cases were modelled and analyzed using a finite element software, GeoStudio 2018 R2. The results showed that the optimum improvement was achieved when using a single layer of geotextile reinforcement placed at the base of the embankment, by which the factor of safety increased by up to 40%. Adding a second layer, a third layer and a fourth layer, increases the safety factor by 2.5%, 1% and 0.5% respectively. Different charts for different heights of embankments were presented to aid in finding the most suitable slope angle and number of reinforcement layers required to achieve a certain safety factor.The use of geotextiles as a reinforcement material for improving the factor of safety against slope failure in embankments built on soft clay is becoming a common practice. This work is intended to help understand the effect of the geotextile reinforcement has on such embankments and to provide a design aid for civil engineers that enables them to quickly estimate the factor of safety against slope failure. Seventy four different cases were modelled and analyzed using a finite element software, GeoStudio 2018 R2. The results showed that the optimum improvement was achieved when using a single layer of geotextile reinforcement placed at the base of the embankment, by which the factor of safety increased by up to 40%. Adding a second layer, a third layer and a fourth layer, increases the safety factor by 2.5%, 1% and 0.5% respectively. Different charts for different heights of embankments were presented to aid in finding the most suitable slope angle and number of reinforcement layers required to achieve a certain safety factor.

关 键 词：Reinforced Soil EMBANKMENTS Soft Soils Slope Stability 

分 类 号：O34[理学—固体力学]