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Non-Linear Analysis of 3D Interaction of Soil-Diaphragm wall Structure with Different Cross-Sections

B. Yajnheswaran, Subba Rao


Diaphragm walls have been used throughout the world to construct deep underground structures, conventionally by using the Reinforced Cement Concrete (RCC).Stiffer walls attracts larger bending moment than flexible walls (Potts and Day, 1991). Research has shown that increase in wall flexibility increases displacement, hence reduction in bending moment. In this paper static analysis of diaphragm wall sections having different stiffness are carried out using PLAXIS 3D software for the load condition existing in deep draft berth of New Mangalore Port, India. The displacement and bending moment are found out for diaphragm wall sections and results are compared with the actual diaphragm wall section having 1.1m thick. For analysis, a single panel diaphragm wall section having 5m length with 2.5m center to center spaced anchors is modelled. Soil properties are considered as per the boreholes data’s obtained from New Mangalore Port. The results are validated with values derived from the design chart.


Different stiffness, varying anchor locations, static load, displacement, bending moment.

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