A Parametric Study on Shoring Structures with Multi-row Anchors in Layered Soil

Publication Type:
Conference Proceeding
Earthwork Project Management, Slope Stability Analysis, and Wave-Based Testing Techniques (GSP 252): GeoHubei 2014, 2014, pp. 81 - 88
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This paper examines two numerical methods commonly used in shoring design, namely the beams on elastic foundation method using WALLAP and the finite element method (FEM) using PLAXIS. Numerous design parameters are also investigated to study the effects of the parametric variations on each method. The shoring model analysed in this study is based on a deep excavation project in Sydney central business district. One of the significant findings of this study is that the results obtained from both WALLAP and PLAXIS show marginal numerical errors, which in turn need to be examined closely. Generally, the beams on elastic foundation method is more conservative than the FEM. In comparison with the FEM, the soil modulus has more significant effects than the shear strength parameters in the beams on elastic foundation method. Moreover, the resulting shear forces, bending moments and lateral displacements of the shoring are less sensitive to the variation of the soil friction angle than the cohesion. The findings of this study can be taken into consideration by practicing civil engineers, when designing appropriate shoring systems in urban areas.
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