Bridges: Schladming Bridge

Case study: SOFO, ADAM System

Bridge widening
Old-new interatcion
Long-term Monitoring

Project Description

Summary: An innovative bridge for the widening of roads in steep terrain is used in Austria for the time. In order to monitor the temperature depending behaviour of the structure 8 SOFO sensors and 12 temperature sensors were embedded.

Clients: Graz University of Technology

Place: Schladming (Austria)

Period: 2002 - N/A

Installation: Graz University of Technology

Structure's short description: The new construction consists of a continuous concrete slab, which is support by drilled piles. Two thirds of the 142m long concrete slab are resting on existing ground whilst the remaining third cantilevers out. The advantages of this construction are the economical construction and reduced maintenance costs since the construction requires no expansion joints and bridge bearings. The difficulties are in the monitoring of the constraint stress due to temperature variations.

Aim of monitoring: By means of continuous monitoring the displacements of the supporting structure are observed over a long period and the given bridge movements are compared with the results of numerical simulating. Also, this kind of construction should provide knowledge on the long-term behaviour of joint-less bridges.

Number of sensor: 8

Main Results: At the moment customer is collecting data to be analysed

Bibliography:

Monitoring of Bridge Deformations Using Embedded Fiber Optical Sensors , W. Lienhart, F. K. Brunner, In Stiros, St. and Pytharouli, St. (Eds.) Proc. 11th International Symp. on Deformation Measurements, Santorini, Greece, 555-561, 2003

European Perspective on Monitoring-Based Maintenance , A. Del Grosso, D. Inaudi, IABMAS '04, International Association for Bridge Maintenance and Safety, October 19-22, Kyoto, Japan, 2004

Integrated Analysis of Inhomogeneous Structural Monitoring Data of a Monolithic Bridge , W. Lienhart, F. K. Brunner,, The 3rd International Conference on Structural Health Monitoring of Intelligent Infrastructure - SHMII-3, November 13-16, On Proceedings CD, 2007