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  Evaluating the damage of adjacent framed buildings induced by tunnel construction in soil ground

  Urban tunnel construction may lead damage to the adjacent surface buildings. Empirical method usually oversimplified the surface structure as an equivalent elastic beam which cannot characterize the realistic behaviour of framed building due to frame action. In this study, numerical analyses were carried out to investigate the damage mechanism of fully infilled framed building with opening in different scenarios due to tunnelling induced ground movements. The complex tunnelsoil-structure interaction system is modelled by nonlinear interfaces between soilstructure and between frame-wall, a non-uniform tunnel deformation mode and a user defined nonlinear constitutive model for simulating the ground stiffness decay. The different responses of the framed building subject to different scenarios were evaluated based on the values of angular distortion, horizontal strain and smeared crack pattern. The results present the distinct performance of framed building subject to different tunnelling induced ground deformation mode, which highlight the background for understanding the prior factors influencing the framed building response to tunnelling induced ground movements.

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