Studying on the shakedown theories and plastic deformation of contact surface layer the shakedown of contact surface layer is related to the strain - hardening models of materials , such as isotropic hardening , kinematic - hardening , and mixed - hardening . the existing results based on experiments and theory show that the shearing strain behavior of contact surface layer caused by friction can be comparatively described with kinematic - hardening
32.
The framework and results of this study is thus summarized as follows : 1 . analyzing the effect of the nonlinear parameters on seismic response . so far the g / g _ max - ( transient dynamical shear modulus over the maximum shear modulus vs . shear strain ) and the - ( equivalent shear hysteretic damping ration vs . shear strain ) curves are widely employed in the experimental method in studying soil dynamic property , supposing under equiamplitude cyclic load
33.
Research results show that foundation pit slope soil structure destroy characteristic is subgrade shear strain destroy , namely , it is gradually destroy . lateral displacement of retaining and protecting piles has relations with embed depth , load grade and strength index parameter . soil displacement and timbering pile displacement are in harmony with deformation
