Analysis of structural masonry buildings taking into account the construction sequence loads and soil-structure interaction

Análise de edifícios de alvenaria estrutural considerando a sequência construtiva e a interação solo-estrutura

abstract:

The present study assesses conventionally used design standards, analyzing the effects caused by the construction loads, that is, a gradual increase in load and stiffness during construction, and soil-structure interaction (SSI), with soil represented by linear springs, in a structural masonry building over a support structure of reinforced concrete. The equivalent frame model, developed by Nascimento Neto, was used to simulate the support structure and the first masonry floor, and a specific three-dimensional frame model to simulate the other floors. Four analysis models were applied to assess stress distribution at the base of the walls, and the stresses and displacements of the support structure. The results show that introducing SSI and the construction loads causes relief or the possible need to reinforce elements designed in Ultimate Limit State (ULS) and Serviceability Limit State (SLS), as well as uniform settlement.

Keywords:
structural masonry; reinforced concrete support structure; soil-structure interaction; construction sequence loads