Finite element analysis of floor slabs by means of visual programming in SAPFIR-3D

Abstract

To calculate analytical model of buildings and receive stress-strain state results, triangulation of structural elements is required. Great attention should be paid to reinforced concrete multi-span floor slabs at the joints with vertical elements. Due to unevenness and complexity in form, the finite element mesh of slab in such places can become more concentrated, which leads to an increase in stress values and inadequately elements design. To prevent such negative consequences and create an even mesh all over the slab, additional mesh generation in such places is required. To simplify such problem and reduce human costs, adjustment of finite element (FE) mesh can be obtained by means of visual programming. The purpose of this paper is to obtain and compare the results of finite element analysis (FEA) of reinforced concrete floor slab in residential building and to adjust generated mesh at the joints with vertical elements by means of visual programming in SAPFIR-3D. The scientific and practical importance of the work stands in the describing of the method of adjustment of FE mesh generation of floor slabs at the joints with vertical elements by means of visual programming. The results of the research are based on the results of calculation in programming complexes SAPFIR-3D and LIRA-SAPR, also analysis of literary sources and practical experience of the authors. The article revealed the possibility usage of visual programming to adjust FE mesh of floor slab with aim to simplify its shape at the joints with vertical structural elements. There is considered method and options for visual programming in the SAPFIR-3D. In this paper, results of the 8-storey skeleton reinforced concrete residential building with basement, have been analyzed and compared. The practical importance of the results of this paper lies in the presentation of the proposed method to adjust FE mesh of floor slab by means of visual programming.