Application of the strength reduction factor with the performance index as the control variable is an effective way to conduct performance-based aseismic design.

By introducing strength reduction factor and equivalent ductility indexwith the performance objective as the control parameter, an inelastic displacementspectrumwith expected performance targetfrom the dynamic amplification coefficient spectrum of UBC97 Seismic Design Code was derived, from which the equivalent structural period of bridge piers can be obtained.

Research on the property of rock shearing strength and strength reduction method;

Determination of the anchorage depth of rigid anti-slide piles based on strength reduction method;

Numerical analysis for bearing capacity of undrained two-layer clays by FEM with strength reduction;

Analysis on the deep anti-sliding stability of concrete gravity dam foundation by FLAC strength reduction method

By using the strength reduction method,the stable situations of the landslide under the primary situation,impounding situation,rainstorm situation,rapid drawdown situation,earthquake situation are analyzed in detail.

The results shows that using the FDM strength reduction method can got the internal slide surface and safety factor about the reinforced earth walls,and can provide proof for reinforced earth walls engineering design.

20 is received through shear strength reduction method.

The general principle of DDA,discontinuous deformation analysis,and the shear strength reduction are discussed simply.

The Duncan E - B model and the generalized Mises model as the ideal elastic - plasticity model are adopted, and the applicability that the soil constitutive relation for slope stability estimation by FEM with shear strength reduction will be discussed.

Nonlinear finite element analysis on stability of slope based on strength reduction method;

Application of strength reduction method in Hoek-Brown criterion;

The bisection method applied in strength reduction method of bearing capacity of foundation;

Study on strength reduction technique considering rheological property of rock and soil medium;

On rational clear spacing of tunnel with small clear spacing based on strength reduction technique;

Based on the strength reduction technique for nonlinear finite element analysis of slope stability the arc-length control method for calculating the fracture loading of structure and tracking the softening of structure deformation is introduced to improve the calculation.