OPTIMAL DESIGN OF RESTRAINED SHEET PILE WALLS

Authors

1 Associate Professor, Faculty of Engineering – Minia University, Egypt

2 Post Graduate Student, Faculty of Engineering – Minia University, Egypt

Abstract

Restrained shoring wall represents a commonly used economic solution for vertical deep excavation, when open cuts with side slopes are not allowed. It is mainly used to avoid failure that may be accompanied by considerable settlements, tilting or by bearing capacity failure of nearby foundations. The cost of these systems mainly depended on soil type and excavation depth. In this research, strutted shoring systems are analyzed and designed for sandy soil conditions and excavation depth 15m. The system is optimized using Genetic Algorithm. Finite Element Method is used for the analysis. The designed problem is formulated as a non-linear mathematical programming problem using FORTRAN 95. The developed model is used for parametric study to investigate the influence of different design parameters on the system cost. Genetic Algorithm, is used to perform the optimization study based on the minimum cost. The optimization process aims to minimize the system cost considering both deformation and stress constraints for the ground soil and construction material.

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References

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Where:
WEL : is the wall embedded length.
WS : is the wall section.
SS : is the strut section.
S.(1) : is the position of strut (1) from the ground surface.
S.(2) : is the position of strut (2) from the ground surface.
S.(3) : is the position of strut (3) from the ground surface.
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