Calculation of Building Settlement Induced by Tunneling Based on an Equivalent Beam Model

摘要

Tunneling-induced ground movement may excessively deform the overlying structure. It is necessary to analyze the soil–structure interaction mechanism and calculate the settlement in advance to avoid potential damage to an adjacent building. The present study adopts the Gaussian distribution law of a greenfield and the equivalent beam method in considering a building’s bending and shearing deformation, the ground’s residual deformation, and the potential gap between the building and ground and analyses the relationship between the building settlement, the building load, and the number of floors. It is found that the settlement of masonry buildings decreases with an increase in the number of floors, gaps generally appear for low-rise buildings, and the settlement of framed buildings can generally be estimated as greenfield settlement. The effectiveness of the proposed method is verified in a case study.