Cyclic testing of a full-scale two-storey reinforced precast concrete wall-slab-wall structure
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In recent years, the phenomena of induced and triggered seismicity have attracted significant attention in countries that are not prone to hazard from natural seismicity, motivating the need for experimental testing of existing structures that are built without any particular seismic design and/or detailing criteria. This paper describes thus the pseudostatic cyclic testing of a full-scale two-storey lightly reinforced precast concrete wall-slab-wall structure, representative of a building typology that was found to be a very common form of housing in the region of Groningen (The Netherlands), where seismic events induced by reservoir depletion due to gas extraction have in the recent years occurred. Following a description of the specimen and experimental setup, the results obtained during the pseudostatic cyclic testing in the weak direction of the specimen, illustrating the response mechanism and damage evolution at progressively increased drift amplitudes, are discussed. Particularly noteworthy is the fact that the specimen collapsed by a premature failure of its three-way panel-to-panel joints, seemingly indicating that this type of connection is the weakest link of the structural system tested.
KeywordsCyclic testing Pseudostatic testing Prefabricated structure Wall-slab-wall structure Lightly reinforced wall Wall-to-wall connection Three-way connection Induced seismicity
This paper describes an activity that is part of the project entitled “Experimental campaign on RC buildings typical of the Groningen region”. The project, carried out at Eucentre, was undertaken within the framework of the research programme for hazard and risk of induced seismicity in Groningen sponsored by the Nederlandse Aardolie Maatschappij BV. The authors would like to thank all the parties involved in this project: including the experimental laboratories of Eucentre and of the Civil Engineering Department at the University of Pavia that performed the tests, together with NAM, Arup and TU Delft. We also acknowledge Jeroen Uilenreef, Filippo Dacarro and Alberto Pavese for their support and feedback in the different phases of the experimental campaign. Finally, we are grateful to Giulia Fagà for her valuable support with figure editing.
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