2025/01/10 by Anarova, Shahzoda, Qarshiyeva, Soliha, Ismoilova, Maftuna
paper · doi:10.34920/icdgpdt.alkhws30
This paper is concerned with an analysis of the strength and stability of load-carrying structures in a high-rise building due to the real position of reinforced concrete structural elements, such as columns and walls. The finite element method (FEM) is used for the structural analysis. Problem formulations and governing equations are given, along with three main 3D finite element models, namely, the “design” (ideal) model, the first “actual” model considering column position deviations, and the second “actual” model taking into account wall position deviations. The finite element models primarily involve 4-node structural shell elements suitable for foundation slabs, floor slabs, and walls; the 3D 2-node beam elements are available for beams and columns. They also include special spring-damper elements and multipoint constraint elements. An advanced soil behavior model provided by Prof. Yu. K. Zaretsky is taken. The details of mesh at the bottom of the foundation slab coincide with pile positions. Construction sequencing and various nonlinearities are accommodated in the analysis. The results of modal, static, and dynamic analyses are considered under the action of several combinations of gravity, fa?ade, dead, temporary, wind, snow, and crown loads. The regulatory strength assessments were performed using the design codes of the Russian Federation. Outputs such as displacements, stresses, and natural vibration frequencies will contribute to the elaboration of effective methods for monitoring the foundation and load-carrying structures of high-rise buildings.