Modelling of Shear Behaviour of Interfaces Involving Smooth Geomembrane and Nonwoven Geotextile Under Static and Dynamic
- PDF / 1,970,112 Bytes
- 15 Pages / 547.087 x 737.008 pts Page_size
- 48 Downloads / 197 Views
(0123456789().,-volV) ( 01234567 89().,-volV)
ORIGINAL PAPER
Modelling of Shear Behaviour of Interfaces Involving Smooth Geomembrane and Nonwoven Geotextile Under Static and Dynamic Loading Conditions Piyush Punetha
. Manojit Samanta
Received: 27 April 2018 / Accepted: 26 June 2020 Ó Springer Nature Switzerland AG 2020
Abstract The constitutive modelling of geosynthetic–geosynthetic interfaces is essential to predict the performance of the engineering structures such as landfills, flood control dykes and geotextile encapsulated-sand systems for the protection of shore. This article presents a mathematical model to simulate the shear stress/force–displacement behaviour of the interfaces involving smooth geomembrane and nonwoven geotextile under static and dynamic loading conditions. The model is the extension of an existing technique developed for predicting the soil-structure interface shear behaviour under static loading conditions. The proposed model can predict the non-linear pre-peak and the post-peak strain softening/hardening behaviour of the interfaces observed during the laboratory testing. The shear stress/force–displacement response of the interfaces has been modelled by
dividing it into three parts: pre-peak, peak and postpeak behaviour. Subsequently, the modelling parameters are obtained using the results from the laboratory direct shear tests and fixed–block type shake table tests conducted on these interfaces. Finally, the shear stress/force–displacement response of the interfaces is evaluated and compared with the experimental results. The predicted shear stress/force–displacement response of the interfaces is found to be in good agreement with the experimental data for both static and dynamic loading conditions. Keywords Geosynthetics Interface behaviour Modelling Dynamic loading
1 Introduction P. Punetha School of Civil and Environmental Engineering, University of Technology Sydney, Sydney 2007, Australia e-mail: [email protected] M. Samanta (&) Geotechnical Engineering Division, CSIR-Central Building Research Institute, Roorkee, Uttarakhand, India e-mail: [email protected] M. Samanta Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, UP 201002, India
The geosynthetic–geosynthetic interface shear behaviour plays a crucial role in the design of geotechnical engineering structures such as landfills, flood control dykes and geotextile encapsulated-sand systems for the protection of shore (Bergado et al. 2006; Lohani et al. 2006; Krahn et al. 2007; Mariappan et al. 2011; Moreira et al. 2013, 2016; Guo and Chu 2016). The geosynthetic–geosynthetic interface [involving smooth geomembrane (GMB) and geotextile (GTX)] usually acts as a weak zone in these structures due to very low interface shear strength (with interface friction angles ranging between 5° and 20°). However,
123
Geotech Geol Eng
on the contrary, the low interface shear strength might prove beneficial in some cases. Studies of Hushmand and Martin (1991), Kavazanjian et al. (1991), Yegian and Lahlaf (199
Data Loading...
