Shakedown Analysis of “Soil-Pile Foundation-Frame” System under Seismic Action

In this article, the seismic shakedown FEM analysis of reinforced concrete and composite spatial frame structures on the deformable foundation, taking into account the elasticplastic and brittle behavior of structures elements, is presented. A foundation consists of group of the piles in the soil. The behavior of soil is described here using+ the elastic halfspace theory. The pile deformation model is assumed to be elastic-perfectly plastic, where the bearing capacity is determined by the results of testing the soils or the piles themselves. An example of seismic shakedown limit analysis is presented.

Numerical models for the elastic halfspace dynamic response due to road traffic load

Due to the information technology development the numerical modelling in the traffic structures engineering finding the application. Even in the traffic effect on the geological environment and soil. It this case two mechanical systems are interactive and acting to each other. This special type of interactive task is usually solves by using Finite Element Method (FEM). In both mechanical systems propagates the dynamic strength and strain effects. The Traffic Seismicity (TF) in the elastic half space is possible to solve in the time and the frequency domain. The paper contains theoretical approach of the two numerical simulations in the TS task. For this type of the FEM simulations the various numerical systems were used.