Numerical Modelling of Connections Between Stones in Foundations of Historical Buildings

[摘要] The aim of this paper is to analyse the behaviour of old building foundations composed of stones (the main load-bearing elements) and mortar, based on numerical analysis. Some basic aspects of historical foundations are briefly discussed, with an emphasis on their development, techniques, and material. The behaviour of a foundation subjected to the loads transmitted from the upper parts of the structure is described using the finite element method (FEM). The main problems in analysing the foundations of historical buildings are determining the characteristics of the materials and the degree of degradation of the mortar, which is the weakest part of the foundation. Mortar is graded using the damaged-plastic model. In this model, exceeding the bearing capacity occurs due to the degradation of materials. The damaged-plastic model is the most accurate model describing the work and properties of mortar because it shows exactly what happens with this material throughout its total load history. For a uniformly loaded fragment of the foundation, both stresses and strains were analysed. The results of the analysis presented in this paper contribute to further research in the field of understanding both behaviour and modelling in historical buildings' foundations.

[发布机构] Faculty of Architecture, Faculty of Civil and Environmental Engineering, Technical University of Gdask, ul. Narutowicza 11/12, Gdask; 80-233, Poland^1

[关键词] Accurate modeling;Degree of degradation;Historical buildings;Historical foundations;Load-bearing elements;Old buildings;Plastic models;Total load