SLABSTRESS: SLAB STructural RESponse for Seismic European Design
Authors/Creators
Description
The dataset reports results from the full-scale testing of a two-storey flat slab structure, undertaken in the SlabSTRESS research project; the construction and testing were planned and carried out at the ELSA laboratory of the European Commission’s Joint Research Centre. The dimensions are three bays by two, spans 4.5 and 5 m, slab thickness 0.2 m, interstorey height 3.2 m. Two different longitudinal reinforcement details were considered; welded studs shear reinforcement was provided only in the second floor slab. The testing program included seismic tests for service and ultimate actions, using the pseudo-dynamic technique with virtual walls. To this aim, a building structure was designed with primary walls and the flat slab frame as secondary element. Cyclic loading tests followed up to ultimate drift capacity of the structure. The sequence of tests included strengthening of a set of damaged connections using bolted bars in holes drilled through the slab, followed by cyclic testing to failure. The instrumentation was provided for the global response and the connections with local rotations in the columns and slab; cracking around the columns was measured with through-crack sensors; a measurement system for internal forces and moments was included within the columns. The results show the response with deformations and damage for the different loading conditions up to failure. The results obtained on a full-scale structure extend and confirm the knowledge in the literature, mainly based on isolated connections and/or small-scale samples.
Series information
The structure is a two floor flat slab frame, with three by two bays (4.5 m and 5 m in the longitudinal direction and 4.5 m in the transverse direction) and storey height equal to 3.2 m. The floors are ordinary reinforced concrete slabs 0.2 m thick. Columns cross sections are square with dimensions 0.4, 0.35 and 0.3 m for internal, edge and corner columns respectively. The seismic design of the structure was carried out as a secondary flat slab frame in a building with primary seismic resistant walls. These latter have been numerical simulated and included in the pseudo-dynamic testing through sub-structuring.
The aim of the SlabSTRESS experimental campaign was twofold: first to verify the seismic performance of a structure designed according to Eurocode, with ductile walls and flat slab frames as primary and secondary seismic members respectively, and secondly to study the performance of the flat slab frame beyond the design displacements.
Technical info
The horizontal displacements/loads on each floor was imposed by two parallel hydraulic actuators connected to the laboratory reaction wall. Each jack had a stroke of ± 500 mm and a working load of ± 500 kN.
In addition to the self-weight of the flat slab frame, water tanks and concrete blocks were placed on the first and second floor to impose vertical loads reproducing distributed loads.
The instrumentation, common to all experiments, monitored for the global response of the specimen (i.e. longitudinal and transversal displacement at the two storeys) as well as the behaviour of connections. The latter included transducers for local rotations of the columns and slab; opening of cracks in column. Finally the instrumentation included a novel measurement system for internal forces and moments within most of the columns.
Files
SLABSTRESS.zip
Additional details
Additional titles
- Alternative title
- SLABSTRESS
Related works
- Is published in
- Publication: 10.1016/j.engstruct.2021.112551 (DOI)
- Publication: 10.1080/13632469.2022.2112320 (DOI)
- Publication: 10.1002/suco.202000305 (DOI)
Dates
- Updated
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2018date of construction or retrofit
- Created
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2017Start date
- Other
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2020End date