Affiliation:
1. Department of Civil, Environmental Engineering and Architecture, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy
2. Civil Engineering School, Pontificia Universidad Católica de Valparaíso, Valparaíso 2340000, Chile
Abstract
Seismic regulations of developing countries are often grounded on rules of more experienced countries. The Lebanese regulations refer to four foreign codes, this excess of guidelines generating confusion and conflicting design choices. Moreover, the scarcity of earthquakes recorded in the Lebanese area makes it difficult to obtain suitable sets of spectrum-consistent accelerograms for dynamic analyses. Sorting through the reference regulations and the indications for their local application, this paper derives and compares all the design response spectra allowed by the Lebanese code. Consistent with the design response spectra of the two codes that are still in force (of the four referred to), some suites of spectrum-consistent accelerograms are derived. Based on the Arias intensity, a general procedure is also proposed to reduce the time duration of the accelerograms, while saving the earthquake energy content and, thus, the reliability of the results. Full-length and short-length spectrum-consistent accelerograms are thus made available for the Lebanese design. With reference to a two-dimensional model some comparisons between response-spectrum-based and earthquake-based analyses are provided, which showed that the Lebanese code allows different safety levels for earthquake-resistant buildings. The paper provides a very useful contribution to researchers and designers that are involved in the protection of the Lebanese building heritage from seismic hazards, and it also provides data and tools that can be more generally exploited in other seismic areas.
Subject
Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science
Reference57 articles.
1. A loophole in the Eurocode 8 allowing for non-conservative seismic design;Paglietti;Eng. Struct.,2011
2. Pros and cons of a pushover analysis of seismic performance evaluation;Krawinkler;Eng. Struct.,1998
3. Non-linear analyses to assess the seismic performance of RC buildings retrofitted with FRP;Porcu;Rev. Int. Metodos Numer. Calc. Diseno Ing.,2020
4. Feasibility of the underground earthquake bracelet;Gerges;Computational Methods and Experimental Measurements XIX & Earthquake Resistant Engineering Structures XII,2019
5. Non-linear dynamic analysis to assess the seismic performance of cross-laminated timber structures;Porcu;J. Build. Eng.,2018