Analysis of Single and Back-to-Back Reinforced Retaining Walls with Full-Length Panel Facia
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ORIGINAL PAPER
Analysis of Single and Back-to-Back Reinforced Retaining Walls with Full-Length Panel Facia Sasanka Mouli Sravanam . Umashankar Balunaini
. R. Madhira Madhav
Received: 8 January 2018 / Accepted: 26 June 2020 Ó Springer Nature Switzerland AG 2020
Abstract Back-to-back mechanically stabilized earth (MSE) walls have several applications in infrastructure development. Present study firstly discusses on the kinematics of deformation of MSE wall with full-length panel facia. Secondly, single and back-toback MSE walls with full-length panel facing are modelled using finite difference based software (Fast Lagrangian Analysis of Continua). The reinforcements in the back-to-back walls extend through and through from one wall facing to the other wall facing. Lateral pressures, vertical stresses, and lateral deformations at the facing for various reinforcement stiffness values are evaluated for both single and back-to-back walls under working stresses. Reinforcement stiffness values of 500 kN/m, 5000 kN/m and 50,000 kN/m are considered. For single MSE wall with stiff reinforcement, lateral pressures at the facing are higher than those for active earth pressure. Lateral deformations of facing with reinforcement of low stiffness are higher than those with reinforcement of high stiffness. In back-to-back walls, the lateral deformation of wall facing with reinforcement of high stiffness is slightly inwards near the top of the wall. S. M. Sravanam Department of Civil Engineering, VNR VJIET, Hyderabad, India U. Balunaini (&) R. M. Madhav Department of Civil Engineering, IIT Hyderabad, Kandi, India e-mail: [email protected]
Reinforcement stiffness is found to have significant effect on the vertical stress in both single and back-toback walls. Lateral pressures of both single and backto-back connected walls are compared. Lateral pressures on single MSE wall are found to be lesser than those for back-to-back wall at the top of the wall. However, lateral pressures near the bottom of single wall are higher than those of back-to-back wall. Keywords Full-length facing panel Back-to-back walls MSE walls Lateral pressures
1 Introduction Mechanically Stabilized Earth (MSE) walls with fulllength panel facing are used at places, such as bridge abutments, where lateral deformations need to be constrained. These walls exhibit relatively less lateral deformations than those of other types of facia, due to rigidity of the full-length panels. Many studies are available in the literature on full-length panel faced single MSE walls (Andrawes et al. 1991; Tatsuoka et al. 1992; Tatsuoka 1993; Tateyama et al. 1994; Helwany et al. 1996; Ismeik and Guler 1998; Rowe and Ho 1997; Holtz and Lee 2002; Yang et al. 2009a, b; Lenart et al. 2016). Yonezawa et al. (2014) summarized the details of the design and construction of several full-length panel structures. Design
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Geotech Geol Eng
guidelines of independent full-height panel were proposed by Abu-hejleh et al. (2001). Numerical m
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