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Assessing the effect of tsunami-induced vertical loads on RC frames

Del Zoppo, M; Rossetto, T; Di Ludovico, M; Prota, A; (2019) Assessing the effect of tsunami-induced vertical loads on RC frames. In: Del Zoppo, M and Colombo, L.G and Vecchi, F, (eds.) Proceedings of the First fib Italy YMG Symposium on Concrete and Concrete Structures. FIB: Parma, Italy.

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Abstract

The increasing number of people, structures and economic activities being exposed to tsunami hazards makes it important to estimate the effects of this hazard on coastal developments. Tsunami onshore flow generates significant loading on buildings and infrastructure, which can lead to structural failure. Literature works recently proposed a non-linear static analysis method, called Variable Depth Pushover (VDPO), for assessing the performance of buildings under the lateral pressures induced by a tsunami onshore flow. This methodology was developed under the assumption that the building is watertight. However, in the case of buildings with breakaway cladding (e.g., masonry infills), the water flow passing through the building induces vertical loads on horizontal structural members, due to uplift and buoyancy pressures, that should be considered during the analysis. Thus, to address this phenomenon, in this paper a numerical investigation is performed considering a combination of tsunami-induced horizontal and vertical loads on a case-study reinforced concrete (RC) moment-resisting frame with breakaway infills, typical of Mediterranean construction. The building model is subjected to a VDPO analysis that applies different types and sizes of vertical loading on the horizontal elements of the building, as the tsunami inundation depth increases. From the results of this analysis, the effects of tsunamiinduced vertical load components on the case-study building in terms of damage propagation and failure mode are discussed, and the significance of considering vertical loading is proven.

Type: Proceedings paper
Title: Assessing the effect of tsunami-induced vertical loads on RC frames
Event: First fib Italy YMG Symposium on Concrete and Concrete Structures
Location: Parma, Italy
Dates: 15 October 2019 - 15 October 2019
Publisher version: https://www.fib-international.org/publications/fib...
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10122170
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