On The Analysis Of Catalan Thin Vaults
Author(s)
S. Benfratello, L. Palizzolo, F. Giambanco & M. D’Avenia
Abstract
This paper is concerned with the identification, modelling and analysis of thin
layered vaults, typical in the Catalan constructions of the XIX century. These
special structures, also known as bòvedas tabicadas, are characterized by very
low thickness with respect to the medium surface dimensions and by the
presence of different superimposed layers of bricks tied with mortar, are studied
in order to individuate a coherent mechanical model for describing the material
behaviour, to recognize the structural response utilizing as comparison adequate
experimental results, and to extend the obtained results for the analysis of new
vaults or for the restoration design of existing vaults. Firstly, the constitutive
material is studied by effecting a compression and bending test on samples taken
from a real structure. The characterization is made by considering alternatively
the material as homogeneous or stratified. Once the constitutive behaviour of the
materials and of the structural elements has been experimentally characterized, a
semi inverse method for the identification of the optimum mechanical
parameters of an equivalent homogeneous ideal material and of a stratified one,
is adopted on the grounds of finite element analysis, reproducing the executed
experimental tests. The comparison between the results obtained experimentally
and the ones based on numerical tests allows us to make evaluations on the
mechanical characteristics of the identified materials and proves that the
stratified model better describes the behaviour of the real material. Further
experimental tests have been made on a real vault and the related numerical
analysis has developed making reference to the two material mechanical models.
The obtained results are encouraging in the utilization of the stratified model.
Keywords: thin vaults, material mechanical modelling, experimental and
numerical analysis, restoration design.
Keywords
thin vaults, material mechanical modelling, experimental and
numerical analysis, restoration design
Related Book
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