engleski

Experimental test on a pointed arch model monitored by contactless optical system

Although masonry pointed arches are quite widespread there is still a lack of experimental research dealing with pre-collapse dynamics. In this paper we present an experimental study on dynamic behaviour of a scaled arch model tested on a shaking platform. A pointed arch model was constructed from identical blocks with dry joints and subjected to a sinusoidal excitation. Mortar has been omitted since in existing structures it is either often not used or it usually degrades over time. Contactless optical system consisting of two highspeed cameras was used to monitor real-time data i.e. openings of the contacts between the blocks, since conventional sensors are difficult to apply. Hinge formation and collapse mechanism have been documented.

masonry ; pointed arch ; dry joint ; shaking table test ; contactless measurement ; digital image correlation ; DIC.

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