Monitoring and Identification of the Seismically Isolated “Our Lady of Tears” Shrine in Syracuse

• 作者: Daniele Losanno Mariacristina Spizzuoco
• 来源期刊: 土木工程期刊(英文)
• 学科: 医学
• 关键词: SEISMIC Isolation Structural Health MONITORING Dynamic IDENTIFICATION FEM Model Non Linear Analysis
• 年，卷（期）: 2018,（4）
• 页码范围: 373-410
• 页数: 38页
• 分类号: R73

摘要

This paper describes the installation and management of the monitoring system of the “Our Lady of Tears Shrine” in Syracuse, whose dome is an imposing r.c. and prestressed r.c. structure of about 22,000 ton that was seismically isolated by flat sliding devices with hysteretic dampers. The monitoring system, representing an upgrading and improvement of an old system never made working, has some innovative features, because it allows to manage with the same dedicated hardware and software both the slow (thermal variations, relative humidity, wind direction and velocity) and the fast acquisitions (dynamic vibrations by wind and earthquake). The monitoring system was inserted among those structures maintained and controlled by the Seismic Observatory of Structures of the National Department of Civil Protection. Some records of low magnitude earthquakes allowed to validate the correct behaviour of the whole structure, as well as to make a dynamic identification of the complex construction and to calibrate a detailed finite element model of the Sanctuary, thus predicting isolators’ behaviour under design earthquake.