International Science Index


Numerical Modeling of Various Support Systems to Stabilize Deep Excavations

Abstract:Urban development requires deep excavations near buildings and other structures. Deep excavation has become more a necessity for better utilization of space as the population of the world has dramatically increased. In Lebanon, some urban areas are very crowded and lack spaces for new buildings and underground projects, which makes the usage of underground space indispensable. In this paper, a numerical modeling is performed using the finite element method to study the deep excavation-diaphragm wall soil-structure interaction in the case of nonlinear soil behavior. The study is focused on a comparison of the results obtained using different support systems. Furthermore, a parametric study is performed according to the remoteness of the structure.
[1] Chehade F. H., Chehade W., Mroueh H. Shahrour I., Numerical Finite Element Analysis of the behavior of structure near to deep excavations in urban area, International review of mechanical engineering (I.RE.M.E), Vol. 2 N. 2 (2008).
[2] Hsieh P.-G., Ou C.-Y. Shape of ground surface settlement profiles caused by excavation, Can. Geotech. J. 35 (1998), 104-1017.
[3] Krajewski W., Edelmann L., Plamitzer R. Ability and limits of numerical methods for the design of deep construction pits», Computers and geotechnics 28, (2008), pp. 425-444.
[4] Vermeer P. A. & Brinkgreve R. B. J. PLAXIS Finite element code for soil and rock analyses, version 7, Rotterdam: Balkema (1998).
[5] M. Abdallah, F. Hage Chehade, W. Chehade, A. Fawaz, Interaction deep excavation – adjacent structure: Numerical two and three dimensional Modeling, Advanced Materials Research Vol. 324 (2011) pp 344-347 (C) (2011) Trans Tech Publications, Switzerland doi: 10.4028/
[6] A. Bayoumi, M. Abdallah, F. Hage Chehade, Non Linear Numerical Modeling of the Interaction Twin Tunnels-Structure. International Journal of Civil, Environmental, Structural, Construction and Architectural Engineering Vol: 10, No: 8, 2016.
[7] F. Hage Chehade, I. Shahrour, Numerical analysis of the interaction between twin-tunnels: Influence of the relative position and construction procedure. Tunnelling and Underground Space Technology Volume 23, Issue 2, March 2008, Pages 210–214.