{"id":3904,"date":"2026-04-22T12:40:04","date_gmt":"2026-04-22T10:40:04","guid":{"rendered":"https:\/\/www.igeas.com\/?post_type=realizzazioni&#038;p=3904"},"modified":"2026-04-24T16:56:57","modified_gmt":"2026-04-24T14:56:57","slug":"ge-34-22-ss-1-aurelia-access-road-network-to-the-port-hub-of-la-spezia-variant-to-ss-1-aurelia-3rd-lot-between-felettino-and","status":"publish","type":"realizzazioni","link":"https:\/\/www.igeas.com\/en\/projects\/ge-34-22-ss-1-aurelia-access-road-network-to-the-port-hub-of-la-spezia-variant-to-ss-1-aurelia-3rd-lot-between-felettino-and\/","title":{"rendered":"GE 34\/22 \u2013 SS 1 \u201cAurelia\u201d \u2013 Access road network to the Port Hub of La Spezia \u2013 Variant to SS 1 \u201cAurelia\u201d \u2013 3rd lot between Felettino and the motorway link \u2013 Functional Section C (3rd functional segment), from the San Venerio interchange to the Melara interchange. Monitoring services during construction and post-construction are included."},"content":{"rendered":"<p><b>Project <\/b><b>objective<\/b><\/p>\n<p>The project aimed to complete Section C of Lot 3 of the Aurelia Bis, along the stretch between the San Venerio interchange (north abutment of the \u201cSan Venerio II\u201d viaduct) and the Melara interchange, connecting to the motorway link.<br \/>\nAs part of the Detailed Design for conventional excavation tunnels, the completion of the Fornaci I Tunnel was undertaken. This section presented significant criticalities due to the undercrossing of the \u201cVorticosa\u201d railway tunnel, located at an extremely reduced distance (approximately 1.5 m) between the road tunnel crown and the railway tunnel invert.<br \/>\nGiven the complexity of the geological context and the presence of interfering railway infrastructure under highly critical conditions, the observational method was adopted in accordance with applicable technical standards (NTC 2018, \u00a7 6.2.5).<br \/>\nIn such conditions, stress-strain monitoring of the affected structure played a key role in ensuring both safety and effectiveness of the construction activities. All automated instruments were integrated into a centralized data acquisition and transmission system, enabling real-time monitoring of measurements.<br \/>\nTo control the stress evolution in the railway tunnel during and after the undercrossing operations, a comprehensive monitoring system was designed and installed on both the existing lining and the reinforcement structures, including:<\/p>\n<ul>\n<li>microprisms for high-precision topographic measurements<\/li>\n<li>pairs of extensometers (Vibrating Wire Strain Gauges)<\/li>\n<li>flat jacks for measuring circumferential stress variations in the lining<\/li>\n<li>embedded strain gauges within the reinforcement structures<\/li>\n<li>instrumentation installed on steel ribs<\/li>\n<li>microprisms for railway track monitoring, including post-construction phases<\/li>\n<\/ul>\n<p>Topographic monitoring was carried out continuously using a robotic total station.<br \/>\nSpecific Alert and Alarm thresholds were defined for each monitored parameter, both in terms of stress and deformation, in order to safeguard the integrity of the railway tunnel during construction. These thresholds were established based on expected values derived from numerical analyses and design models.<br \/>\nThe system was configured to automatically send notifications (SMS and email) when predefined thresholds were exceeded. In particular:<\/p>\n<ul>\n<li>exceeding the Alert threshold triggered intensified analysis of monitoring data<\/li>\n<li>exceeding the Alarm threshold required suspension of construction activities and detailed assessment of the structural stress-strain behavior, with the potential implementation of additional mitigation measures<\/li>\n<\/ul>\n<p>The project was successfully completed in full compliance with design requirements, followed by the commissioning of the railway line within the scheduled timeframe.<\/p>\n","protected":false},"featured_media":3729,"parent":0,"template":"","settore":[29],"class_list":["post-3904","realizzazioni","type-realizzazioni","status-publish","has-post-thumbnail","hentry","settore-monitoring"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>GE 34\/22 \u2013 SS 1 \u201cAurelia\u201d \u2013 Access road network to the Port Hub of La Spezia \u2013 Variant to SS 1 \u201cAurelia\u201d \u2013 3rd lot between Felettino and the motorway link \u2013 Functional Section C (3rd functional segment), from the San Venerio interchange to the Melara interchange. Monitoring services during construction and post-construction are included. - IGEAS Engineering S.r.l.<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.igeas.com\/en\/projects\/ge-34-22-ss-1-aurelia-access-road-network-to-the-port-hub-of-la-spezia-variant-to-ss-1-aurelia-3rd-lot-between-felettino-and\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"GE 34\/22 \u2013 SS 1 \u201cAurelia\u201d \u2013 Access road network to the Port Hub of La Spezia \u2013 Variant to SS 1 \u201cAurelia\u201d \u2013 3rd lot between Felettino and the motorway link \u2013 Functional Section C (3rd functional segment), from the San Venerio interchange to the Melara interchange. Monitoring services during construction and post-construction are included. - IGEAS Engineering S.r.l.\" \/>\n<meta property=\"og:description\" content=\"Project objective The project aimed to complete Section C of Lot 3 of the Aurelia Bis, along the stretch between the San Venerio interchange (north abutment of the \u201cSan Venerio II\u201d viaduct) and the Melara interchange, connecting to the motorway link. As part of the Detailed Design for conventional excavation tunnels, the completion of the [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.igeas.com\/en\/projects\/ge-34-22-ss-1-aurelia-access-road-network-to-the-port-hub-of-la-spezia-variant-to-ss-1-aurelia-3rd-lot-between-felettino-and\/\" \/>\n<meta property=\"og:site_name\" content=\"IGEAS Engineering S.r.l.\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-24T14:56:57+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.igeas.com\/wp-content\/uploads\/2026\/03\/375_DAgostino-SS1-La-Spezia-1_00_2560x2554-1024x1022.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"1022\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.igeas.com\\\/en\\\/projects\\\/ge-34-22-ss-1-aurelia-access-road-network-to-the-port-hub-of-la-spezia-variant-to-ss-1-aurelia-3rd-lot-between-felettino-and\\\/\",\"url\":\"https:\\\/\\\/www.igeas.com\\\/en\\\/projects\\\/ge-34-22-ss-1-aurelia-access-road-network-to-the-port-hub-of-la-spezia-variant-to-ss-1-aurelia-3rd-lot-between-felettino-and\\\/\",\"name\":\"GE 34\\\/22 \u2013 SS 1 \u201cAurelia\u201d \u2013 Access road network to the Port Hub of La Spezia \u2013 Variant to SS 1 \u201cAurelia\u201d \u2013 3rd lot between Felettino and the motorway link \u2013 Functional Section C (3rd functional segment), from the San Venerio interchange to the Melara interchange. 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