شبكة التخطيط العمراني بسم الله الرحمن الرحيم
للكاتبين
R. Harte1, E. Mahran2, K. Stopp1
1Institute for Statics and Dynamics of Structures, University of Wuppertal,
2Department of Civil Engineering, Faculty of Engineering,
Al-Azhar University, Nasr City Cairo, Egypt
ABSTRACT
In recent years more and more nonlinear analysis are made to take into account relocation effects to
utilise the reserve capacity to the ultimate load capacity. This is especially true for large shell
constructions like cooling towers and tanks. Therefore a close-to-reality description is needed, which
considers both the typical characteristics of the individual components structure and soil and their
reciprocal effects. Computation models, which modify the structures with idealised boundary
conditions, like spare masses, springs and dampers, are usually not sufficient. More comprehensive
analysis models are necessary, considering both the geometrical and material non-linearity of the shell
and the interaction with the supporting soil as realistic as possible. In the present article a finiteinfinite-
element model will be presented which allows modelling the soil infinity and its response on
the static and dynamic response of the structure. Examples were given for calculation of a water tank
under earthquake excitation and a cooling tower founded on inhomogeneous half-space.