Problems with Maintaining in Required Technical Condition and Revitalization of Medieval Defense Fortries

Abstract:

Often, in the centers of some towns you can find remains of defensive fortifications, which are not always cared for according to their uniqueness and historical values and sometimes are no longer recognizable. These objects in the eighteenth century have become unnecessary due to changes in the tactics of waging war and a significant modernization of armaments and war craft. Their appearance still gives the impression of massiveness, but in reality it often goes beyond the truth. In the 19th and 20th centuries these buildings were neglected and brought to a ruinous state, transformed into residential or public buildings, and even quite often dismantled. A large part of them no longer exists, hence the overriding goal now is to save their remains and revitalize. In the article, on the example of several such fortifications, their actual state and described activities that are undertaken in order to restore their technical and utilitarian efficiency will be approximated. As part of the article, a static and endurance analysis of the remains of a medieval defense wall of the length of about 70 m, located in one of the cities of south-western Poland will be carried out. Problems related to the implementation and effectiveness of ongoing repairs, reinforcements and structural maintenance will also be discussed, which coped well in times of its magnificence, in exceptional situations, i.e. burden of warfare, but currently they cannot resist climatic and environmental loads.

• Periodical: Key Engineering Materials (Volume 817)
• Pages: 665-672
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.817.665
• Online since: August 2019
• Authors: Dariusz Bajno, Agnieszka Grzybowska*, Jarosław Gajewski
• Keywords: Defense Fortries, Revitalization, Technical Condition

References

[1] PN-87/B-03002 Konstrukcje murowe. Obliczenia statyczne i projektowanie.

[2] PN-B-03002: 2007 Konstrukcje murowe. Projektowanie i obliczanie.

[3] Bajno D., Trwałość i bezpieczeństwo użytkowe pozostałości średniowiecznych murów obronnych na przykładzie dwóch wybranych obiektów, Materiały budowlane 5/2015, 31-35.

DOI: 10.15199/33.2015.05.10

[4] Małachowicz A., Ekspertyza techniczna – ocena stanu konstrukcji miejskiego muru obronnego przy ul. Baldego w Opolu oraz możliwości jego zabezpieczenia, Wrocław, (2012).

[5] PN-B-02015:1986 Obciążenia budowli - Obciążenia zmienne środowiskowe - Obciążenie temperaturą.

[6] Lombillo I., Thomas C., Villegas L., Fernandez-Alvarez J.P., Norambuena-Contreras J., Mechanical characterization of rubble stone masonry walls using non and minor destructive tests, Construction and Building Materials 43 (2013), 266-277.

DOI: 10.1016/j.conbuildmat.2013.02.007

[7] Casolo S., Sanjust C.A., Seismic analysis and strengthening design of a masonry monument by a rigid body spring model: The 'Maniace Castle', of Syracuse, Engineering Structures 31 (2009), 1447-1459.

DOI: 10.1016/j.engstruct.2009.02.030

[8] Valente M., Milani G., Earthquake-induced damage assessment and partial failure mechanisms of an Italian Medieval castle, Engineering Failure Analysis 99 (2019), 292-309.

DOI: 10.1016/j.engfailanal.2019.02.008

[9] Abbati S.D, D'Altri A.M., Ottonelli D., Castellazzi G., Cattari S., de Miranda S., Lagomarsion S., Seismic assessment of interacting structural units in complex historic masonry constructions by nonlinear static analyses, Computers and Structures 213 (2019), 51-71.

DOI: 10.1016/j.compstruc.2018.12.001