Abstract
Italy is located in a very active seismic zone, and many earthquakes have marked the country, some of them in the recent past. In order to take adequate measures of seismic prevention and protection, in the last decades, the Italian Civil Protection Department (DPC) initiated a survey and introduced a specific form for the quick and/or post-seismic assessment of buildings. This is useful to obtain statistics on the types of structures and their vulnerability and a judgement on the damage, leading to a decision about the possibility of reuse and/or the level of retrofitting to be applied. Those activities have been developed since the beginning of 2000. This task is currently carried out by the Italian DPC-ReLUIS project research, line WP2 on the inventory of building structures, setting up the CARTIS form for any structural type, like masonry, reinforced concrete, precast concrete, steel, and timber structures, the latter being mainly related to large span buildings, extensively used in Italy. In this context, the paper presents the first draft of the CARTIS form for large span timber structures that provides a general description for typical structural schemes, through the singular points commonly considered as seismic structural vulnerabilities. Moreover, the statistics on timber large span structures based on a sample of 10 buildings is presented.
Highlights
The seismic vulnerability evaluation of a structure through quick level methods implements empirical approaches [1,2,3], based on the analogy with structures of the same type, having undergone seismic damage
The “quick” level, useful at territorial scale, is based on the identification of simple elements significant for the structures vulnerability, which are collected in specific survey form
The quick level approach for the seismic vulnerability assessment is aided by survey forms, describing the main features of a building that influence the seismic behavior of the construction, which represent vulnerability elements
Summary
The seismic vulnerability evaluation of a structure through quick level methods implements empirical approaches [1,2,3], based on the analogy with structures of the same type, having undergone seismic damage. A specific tool (AeDES) for damage assessment, short term countermeasures for damage limitation, and evaluation of the post-earthquake usability of ordinary buildings was created in 1996/7 to be used by the Italian Civil Protection Department (DPC) after the destructive earthquake Umbria-Marche in 1997 Since it was improved based on the experience acquired in subsequent seismic events, i.e., Molise 2002, L’Aquila 2009, and Emilia-Romagna 2012, from the AeDES 05/2000 up to the AeDES 07/2013 versions. A specific form is devoted to large span structures, including timber ones The latter category of constructions is more and more spread in the built heritage, and it is under the attention of the international scientific community. The typological analysis of the large span timber structures and the related statistics is presented
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