This paper analyzes the action and displacement of saturated sand according to its physical characteristics in real engineering and adopting Mohr-Coulomb intensity theory and non-associated flow law,and calculate to get a series of conclusions of interaction between piles and saturated sand under laterally cyclic load by elastico-plastic mechanical theory.

A simplified elastoplastic constitutive model under undrained cyclic loading;

Fatigue failure of rubber composite under cyclic loading;

Space-time evolution rules study of acoustic emission locations in rock under cyclic loading;

Experimental research on the acoustic emission characteristic of sandstone under the different experimental condition of cyclic loading;

Nonlinear finite element analysis on seismic behavior of two kinds of slabs under cyclic load;

Experimental study on composite slabs under cyclic load;

In order to study the elas to plastic response of the beam to column welded connection under the seismic load and improve the earthquake resistant performance of welded joint,the non linear FEM analysis of "H" and "Dog Bone" Type of welded connection under the simulating seismic cyclic load was carried out by utilizing the ANSYS programming package.

Deformation properties of rock mass with intermittent cracks under cyclic loading;

Study on one-dimensional consolidation behavior of saturated clay under cyclic loading;

Experimental study on degradation of stiffness of saturated soft clay under undrained cyclic loading;