According to the principle of conservation of energy, lateral impedance of piles in layered soil is presented on the basis of the "Beam_on_Winkler_foundation".

And then,by using structural mechanics,we analyze and calculate tank horizontal stiffness and natural period of vibration,and stress of lower support columns and tie-rod under the effects of horizontal seismic force and wind .

The test proved that low temperature affects prominently the vertical compressive stiffness, while its effect on horizontal stiffness varies with the quality and manufacturing process of the laminated rubber.

The paper analyzes the horizontal stiffness of laminated rubber bearing with anchor bolts when the rubber pad is close to the bolts.

Combined with practical work, from damping, horizontal rigidity, characteristics of rubber vibration isolation cushion and other aspects of shock isolation system factors influencing the seismic performances of high-rise buildingare elaborated.

The horizontal rigidity of frame type pylons can be adjusted by changing the type and the number of shear links,and the continuous change from top to bottom of the tower shaft without sudden variation can be guaranteed.

By applying the theory of elastic rectilinear rod to the flexicoil springs with rubber pads,a predicting method for transversal stiffness of the flexicoil springs with rubber pads is advanced and experimentally validated .