In recent years

construction works near the operating metro tunnel in granite residual soil have been gradually increasing

and the impact of these construction works on the safety of shield tunnel should not be ignored. Finite element method is an effective method to evaluate the influence of adjacent construction on shield tunnel

but its reliability highly depends on the reasonable selection of soil constitutive model and parameters. In this paper

the current situation of parameter selection of hardening soil model for granite residual soil is firstly reviewed. Then a back-analysis method for determining the parameters of granite residual soil based on the self-boring pressure meter test (SBPT) is proposed. Finally

the obtained back-analysis parameters are applied to the engineering case of foundation pit excavated overpass existing shield tunnel for method verification

and more reasonable values of parameters of hardening soil model for granite residual soil are determined. The results show that the strength parameters of hardening soil model for granite residual soil can be determined by laboratory tests

and the stiffness parameters of

and are the key parameters for the back-analysis. The ratio of : : from 1:1:3 to 1:1:5 is suitable for engineering practice

and the value of ranges from 36 MPa to 43 MPa according to different ratios.