Bridges: Cable stayed bridge in Venice

Case study: SOFO, ADAM System

Cable-styed bridge
Steel structrue monitoring
Cble load monitoring
Concrete Tower monitoring

Project Description

Summary: Static and dynamic structural monitoring of a curved cable stayed bridge located in the commercial harbour of Venice. A total of 78 SOFO sensors and 4 SOFO inclinometers were integrated in: main deck (231m length), 18 cables and tilted pylon

Clients: Tecniter Srl

Place: Porto Marghera - Venezia (Italy)

Period: 2003 - 2005

Installation: Tecniter / SMARTEC

Structure's short description: A new challenging cable stayed bridge has been monitored since 2003 in the commercial harbour of Marghera, the industrial zone of Venice basin. The structure consists of seven spans, with a total length of 424 meters: the main deck, with two spans of 126 and 105 m, plus 5 other small spans, with lengths from 30 to 42m. The deck frame is made of steel and has a width of 24 meters.

Aim of monitoring: To increase the knowledge of the structural behaviour, and mainly to monitor in the best way the construction phases of this bridge (avoid failure in the precast slabs assemblage) the Authority decided to commission a permanent health monitoring system. The fiber optic SOFO monitoring system, developed by SMARTEC SA (Manno, Switzerland), was chosen for this application, and a total of 78 SOFO sensors, 4 SOFO inclinometers and several thermocouples has been integrated on the bridge by Tecniter Srl (Milan, Italy). A permanent static and a dynamic structural monitoring will be performed on the structure, keeping under control the following parts: the main steel deck, the 18 steel cables which support the load of the deck, the tilted pylon antenna, on which the cables are anchored.

Number of sensor: 82

Main Results: N/A

Bibliography:

Monitoring System for a Cable-Stayed Bridge using static and dynamic Fiber Optic Sensors , A. Del Grosso, A. Torre, D. Inaudi, G. Brunetti, A. Pietrogrande, 2nd International Conference on Structural Health Monitoring of Intelligent Infrastructure (SHMII-2'2005), Shenzhen, China, November 16-18, 2005

Monitoring with Fiber Optic Sensors of a Cable-Stayed Bridge in the Port of Venice , A. Del Grosso, A. Torre, G. Brunetti, D. Inaudi, A. Pietrogrande, IABMAS'06 The Third Int'l Conference on Bridge Maintenance, Safety and Management, 16 - 19 July 2006, Porto, Portugal, 2006

Fibre Optic Methods for Structural Health Monitoring , Branko Glisic and Daniele Inaudi, Johh Wiley & Sons, Ltd, 2007