Computational Modelling Of Cracking And Settlement Damage In Masonry Structures

Summary

There are two ways to model cracking and fracture in masonry structures: a "smeared" continuum approach and a "lumped" discontinuum approach.  Various contributions to the development of these methods are briefly reviewed.  Aspects to consider for the successful use of the models are  discussed looking in particular at the case of settlement damage to historical masonry, as critical for the new North-South line tunnelling project in the urban city area of Amsterdam.  The case study shows that it is not only the initiation and propagation of cracks that is important, but the sudden snap-through of cracks which may lead to severe damage.  This is effectively predicted using a method of discrete cracks in predefined interface elements, placed tactically at locations where cracking is anticipated.  The way by which the outcome helps to establish improved damage classification systems for historic masonry structures is shown.  14 refs.

Primary author(s): Rots J G

                            Delft,University of Technology; TNO Building & Construction

Source: 12th Int.Brick/Block Masonry Conf. Proc.Annex Vol.IV

            Madrid,25-28 June 2000,p.2171-2187

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