DBPapers
DOI: 10.5593/SGEM2014/B12/S2.069

RETAINING WALL - NEIGHBOURING SHALLOW FOUNDATIONS. NUMERICAL MODELLING

H. Popa, L. Batali, I. V. Neagoe
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-08-7 / ISSN 1314-2704, June 19-25, 2014, Book 1, Vol. 2, 543-550 pp

ABSTRACT
Diaphragms walls are often used for supporting deep excavations, especially in urban areas. The correct estimation of their behaviour is very important taking into account the impact on the neighbouring buildings. Despite their large use, the retaining structures are among the most complex engineering works. Construction of retaining structures requires alternating various types of stages (excavation, anchorage tensioning, loading etc., each one influencing the next stages and the overall structure behaviour. This behaviour is also related to the soil – wall interaction. The paper presents some numerical modelling results using FEM for an embedded wall at the proximity of a strip footing. Two aspects were taken into account: the influence of the excavation on the neighbouring foundations and the effect of the foundation load on the behaviour of the retaining wall. Different parameters of influence were considered: soil nature, distance between the retaining wall and the strip footing, foundation depth and width. The validation of the finite element model and of the numerical results was based on the comparison with experimental data obtained by centrifuge tests.

Keywords: retaining wall, strip foundation, numerical modelling