Behavior of Connected and Unconnected Back-to-Back Walls for Bridge Approaches

Sravanam, Sasanka Mouli and Umashankar, B and Madhira, R M (2020) Behavior of Connected and Unconnected Back-to-Back Walls for Bridge Approaches. International Journal of Geomechanics, 20.

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Back-to-back mechanically stabilized earth (MSE) walls are commonly used in the construction of transportation infrastructure facilities. Federal Highway Administration (FHWA) guidelines discuss briefly the design of reinforced back-to-back walls. In this study, a numerical model was developed to study the behavior of connected and unconnected back-to-back walls under working stresses. The effect of reinforcement stiffness on tensile force profiles, the maximum tensile force developed in the reinforcement, and lateral pressures and lateral deformations for both unconnected and connected walls are discussed in detail. A well-defined critical slip surface was observed for the case of the unconnected back-to-back wall with relatively extensible reinforcement. Lateral pressures at the facing in both the cases were found to be almost equal, and the tensile forces developed in the reinforcement for the connected case were found to be uniform along the length of the reinforcement (except at higher depths).

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IITH Creators:
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Item Type: Article
Subjects: Civil Engineering
Divisions: Department of Civil Engineering
Depositing User: Team Library
Date Deposited: 27 Apr 2020 17:31
Last Modified: 27 Apr 2020 17:31
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