1 Research Assistants, Chair of Structural Design, Faculty of Architecture, Technische Universität Dresden, 01062, Dresden, Germany, lehrstuhl.tragwerksplanung@mailbox.tu-dresden.de
2 Professor, Chair of Structural Design, Faculty of Architecture, Technische Universität Dresden, 01062, Dresden, Germany, lehrstuhl.tragwerksplanung@mailbox.tu-dresden.de
ABSTRACT
The concealed laying of electric lines (or comparable installations such as heating or plumbing) requires the arrangement of chases and recesses in masonry. Recently, an investigation on the effect of horizontal chases on the load bearing capacity of masonry is carried out at the chair of structural design at TU Dresden. By means of the results it should be determined whether an additional structural analysis for chases close to the support of the reinforced concrete slab is necessary or whether, as before, a limitation of the geometry and the position of the chase are sufficient to ensure structural safety.
Based on the analysis of the current state of the art, the influence of horizontal chases on the structural behaviour of masonry was investigated experimentally by means of suitable specimens. Therefore, the bearing capacity of specimens with horizontal chases under centric and eccentric loads was determined and compared to the results of reference tests on specimens without chase. The structural behaviour was investigated with regards to masonry units with vertical cavities.
The results of experimental studies and additional analytical considerations will be finally supplemented and underpinned by means of a numerical parameter study, carried out with the help of common FE Software.
KEYWORDS: masonry, chase, load bearing capacity, eccentric load application
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