| Autor: |
Nikolić, Željana, Krstevska, Lidija, Marović, Pavao, Smoljanović, Hrvoje |
| Předmět: |
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| Zdroj: |
Procedia Engineering; 2017, Vol. 199, p3386-3391, 6p |
| Abstrakt: |
A great number of buildings which are classified as cultural heritage are historic structures made of stone blocks with dry joints. Some of them, which were originally built with mortar in the joints, have experienced mechanical degradation over time and the behaviour of these structures becomes similar to those made of dry stone masonry. Most of these structures have been damaged due to seismic activity. With the aim of increasing their resistance, many of dry stone historical structures were further strengthened by clamps and bolts. In order to evaluate the resistance of these structures, experimental investigations of the behaviour of existing stone masonry structures is very important. This paper presents experimental investigations of the behaviour of the model of stone masonry structure Protiron in the Peristyle square of the Diocletian’s Palace in Split, Croatia, under the seismic excitation. The Protiron was originally built at the turn of the fourth century only from stone blocks and bolts. At the beginning of the 20th century it was strengthened with clamps. A physical model of the Protiron for experimental shaking table testing was constructed in scale 1:4. The testing was performed on the 5×5 meters seismic shaking table at the Dynamic testing laboratory of the Institute of Earthquake Engineering and Engineering Seismology (IZIIS) in Skopje, Macedonia. The testing consisted of several phases: (1) definition of dynamic characteristics of the model; (2) seismic testing in linear range; (3) seismic testing in non-linear range by representative earthquake until failure of the model. The tests provided a clear insight into the seismic resistance and behaviour of the system, the mechanism of damage and failure under intensive tests, especially in the efficiency of the connecting elements (clamps) between the masonry units (stones), which had a special role in increasing the seismic energy dissipation and protection of the structure from collapse. [ABSTRACT FROM AUTHOR] |
| Databáze: |
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