ABSTRACT
Relying on the actual deep foundation excavation project, a three-dimensional numerical model of the pit-support structure-building interaction was established by using the FLAC3D finite difference program. On the base of the model being verified to be correct, the effects of the support structure material, quantity as well as the thickness and insertion depth of the enclosure structure on the horizontal displacement of the enclosure structure were studied. The results show that the displacement of the enclosure tends to decrease with the increase of the number of supports, stiffness and thickness while the location where the maximum displacement of the enclosure occurs tends to develop downward with the increase of the insertion depth.
