Behavior of RC frame structures with added floors made of different materials subjected to seismic loadings

Scientific paper - Original scientific paper

• Author: Trajche Zafirov
• Author: Viktor Hristovski
• Author's institution: University of Zagreb; Faculty of Civil Engineering
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering

Abstract (english)

With the increase of the population in densely populated areas, the lack of living space leads
to an increase of need for upgrades to existing buildings. The problem related to upgrades is of
greater importance in seismically active areas, especially in older buildings designed according
to old codes. Depending on the type of upgrade, it may affect the existing structure differently,
but on the other hand, the existing structure affects the upgrade as well. In the paper first a
short review of achievements in the world regarding this problem has been discussed and
then the activities conducted in IZIIS related to the investigation of the influence of different
material upgrade systems on the integral structural behaviour have been briefly described. This
comparative investigation has been performed by conducting a total of 177 dynamic tests on
the 5x5 m shaking-table at the IZIIS Laboratory, using harmonics, synthetic and real earthquake
records as input in one horizontal direction. Elastic tests with low level of excitation without
occurrence of damages and plastic deformations have been conducted first and then capacity
tests have been performed up to the failure of the models. The various upgrade systems were
constructed of steel frame, light- frame timber, cross-laminated wooden panels and composite
systems of wood and glass. The first two floors represented the existing reinforced concrete, and
the third floor was the upgrade system which was changed during all the tests. The main purpose
of the investigation was to investigate the behavior of this kind of upgrades systems subjected
to seismic loadings and their applicability in seismic prone areas. Important output regarding
the National annex parameters needed for Eurocode design has been also expected from this
investigation. This investigation will be realized within the frame of a part of the doctoral thesis
that is to be proposed.

• Keywords (english): Added floors, cross-laminated timber, light timber frame, shaking-table tests, FEM analysis
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Unknown
• Publication version: Published version
• Publication title: 1st Croatian Conference on Earthquake Engineering 1CroCEE
• Numbering: pp. 1323-1331
• p-ISSN: 3043-8071
• DOI: https://doi.org/10.5592/CO/1CroCEE.2021.193
• URN:NBN: urn:nbn:hr:237:227398
• Publication: 2021-03
• Conference: Title: st Croatian Conference on Earthquake Engineering; Location: Zagreb, Croatia; Start date: 2021-03-22; End date: 2021-03-24; Assembly type: Lecture
• Type of resource: Text
• Publisher: Sveučilište u Zagrebu Građevinski fakultet
• Access conditions: Open access
• Created on: 2024-08-30 07:43:54