Zur effizienten Modellierung und Analyse von Hochhaustragwerken

This paper deals with the modeling and the calculation of sectionally regular high-rise structures. The aim is to develop efficient macro-elements. Especially in structural design these will allow for a numerical calculation which, by using the finite-element-method, will meet the requirements and permit a practice-orientated evaluation of the results. Due to the structure's regularity substitute systems may be used for the calculation and therefore the high-rise structure consists of continuous wall panels. Reasonable, i.e. realistic approaches with respect to the course of deformation in the structure's corss-section 'generalized cross-section values' are derived, reducing the three-dimensional problem to a one-dimensional reflection. The discretization of the deformation along the 'bar center line' finally leads to the stiffness-matrix of the respective generalized beam element (macro-element). This permits a more efficient modeling and calculation compared to the classical beam- and wall-elements, because the special characteristics for the high-rise structures were taken into consideration from the beginning. Especially the simple interpretation of the results allows a review of the structure's quality and sensible variation of the system parameters. This also considers the influence of second-order effects according to DIN 1045 approximately with horicontal forces. Statements for the vibration behaviour resp. the vibration sensitivity according to DIN 1055 are possible. The described solution method is realized in the computer program HIGH-RISE. (orig.)SIGLEAvailable from TIB Hannover: RN 3694(23) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman