Abstract:House cracks and over-deformation are hot issues in tunnel-crossing urban territory,and related studies of calculation of house cracks and its risk evaluation lag far behind the needs of engineering. Based on practice of Xiamen Airport Road Tunnel-crossing building blocks,house deformation and cracks can be quantitatively calculated and explained with W-W failure criterion,Mazars damage model,and yield approach index(YAI) model. By comparison,results show that YAI model is essentially one kind of generalized plastic zone;and its result is distribution of safety degree of house cracks. And Mazars damage model is typical tensile damage model,thereby house cracks can be evaluated by the damage factor. Meanwhile,with YAI or Mazars damage model for numerical simulation of tunnel-crossing process,nonlinear relationships between house cracks and tunnel construction process will be nicely established;thus house cracks can be quantitatively evaluated and pre-controlled. As a whole, simulation results of deforming and cracking process have good coincidence with in-situ measured house fractures and deformation.