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Geomechanics and Engineering Volume 30, Number 3, August 102022 , pages 293-312 DOI: https://doi.org/10.12989/gae.2022.30.3.293 |
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Impact of adjacent excavation on the response of cantilever sheet pile walls embedded in cohesionless soil |
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Akshay Pratap Singh and Kaustav Chatterjee
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| Abstract | ||
| Cantilever sheet pile walls having section thinner than masonry walls are generally adopted to retain moderate height of excavation. In practice, a surcharge in the form of strip load of finite width is generally present on the backfill. So, in the present study, influence of strip load on cantilever sheet pile walls is analyzed by varying the width of the strip load and distance from the cantilever sheet pile walls using finite difference based computer program in cohesionless soil modelled as Mohr-Coulomb model. The results of bending moment, earth pressure, deflection and settlement are presented in non-dimensional terms. A parametric study has been conducted for different friction angle of soil, embedded depth of sheet pile walls, different magnitudes and width of the strip load acting on the ground surface and at a depth below ground level. The result of present study is also validated with the available literature. From the results presented in this study, it can be inferred that optimum behavior of cantilever sheet pile walls is observed for strip load having width 2 m to 3 m on the ground surface. Further as the depth of strip load below the ground surface increases below the ground level to 0.75 times excavation height, the bending moment, settlement, net earth pressure and deflection decreases and then remains constant. | ||
| Key Words | ||
| cantilever sheet pile walls; cohesionless soil; embedded depth; FLAC2D; numerical analysis; strip load | ||
| Address | ||
| Akshay Pratap Singh and Kaustav Chatterjee: Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, India | ||