Effects of cover depth on ground movements induced by shallow tunnelling

摘要

Assessing the impact of underground construction on existing structures in urban areas is an important topic during design. In this paper, the extent of the affected area due to tunnelling is estimated, where existing foundations are influenced based on the investigation of surface and subsurface settlements. The extent of the areas where building deformation exceed allowable settlements is presented, which will provide a preliminary assessment during design on the risk on existing structures, based on allowable settlement u(max) and slope omega(max). A more accurate impact area of shield tunnelling on nearby pile foundations is proposed. (C) 2015 Elsevier Ltd. All rights reserved.