Influence of Outrigger Systems on the Spatial Rigidity of an Object of Parametric Architecture

Abstract

Introduction. In the existing building industry standards and regulations there are currently put into effect the requirements for the spatial rigidity of buildings and structures. For fulfillment of the set requirements various design solutions are used: outrigger systems, edge beams, subrafter constructions etc. Currently the most common design solution for high-rise buildings is integration of the outrigger systems into a building frame.Materials and methods. The evolution of forming the epicycloid cylindrical surface in the SAPPHIRE software was investigated. Based on the results of the study, the optimal form of a parametric architecture object was determined. Five versions of an object design solutions were developed. Modeling of the elaborated building frames was performed in the LIRA-SAPR software based on the slab-beam design model by the finite element method.Results. The analysis of static and dynamic calculations results enables to choose the rational version of a parametric architecture object frame and to provide the necessary strength attributed with maximum possible lean consumption of the materials for the outrigger storey. In the course of experiment the efficiency of a building frame dynamic properties regulation is defined, the technical and economic indicators of the proposed versions and design solutions aimed at increasing the overall rigidity of the building are compared.Discussion and conclusion. A comparative analysis of the dynamic properties regulation efficiency was carried out for each structural scheme. The most rational scheme for a high-rise building was selected, the one meeting the strength and rigidity requirements and proving to be the most material saving. In addition to the efficient dynamic properties regulation, the horizontal stiffening rings were implemented as a constructive solution to prevent and protect a high-rise building from progressing impact which accounts for complete or partial collapse of the building.