Dams: Luzzone dam raising

Case study: SOFO, DiTeSt System

Concrete arch dam monitoring
Dam raising
Old-new concrete interaction

Project Description

Summary: Concrete monitoring of the dam raising. Old-new concrete interaction, long-term monitoring

Clients: IBWK-ETHZ

Place: Ticino Canton (Switzerland)

Period: 1997 - N/A

Installation: IBWK-ETHZ

Structure's short description: The Luzzone dam was recently raised by 18 m to increase the capacity of the reservoir.

Aim of monitoring: The new concrete was instrumented with long-gage SOFO sensors to monitor its shrinkage deformations and to evaluate the interaction between the newly added concrete and the old one.

Number of sensor: 9

Main Results: The sensors survived unharmed the installation in the coarse concrete. Then sensors monitored the deformations over years of operation and showed results compatible with the finite-element simulations.

SOFO sensor installation in the coarse concrete

Bibliography:

Verformungsmessungen mit optischen Glasfasersensoren , N. Casanova, Weiterbildungskurs ETH Z?ich, Feldmessungen und Beobachtungsmethode in der Geotechnik, Switzerland, p 1-10, 1997

SOFO?: Monitoring of concrete structures with fiber optic sensors, D. Inaudi, N. Casanova, P. Kronenberg, S. Vurpillot, 5th int. Workshop on Material Properties and Design, Weimar, Germany, Aedificatio Publishers, p 495 - 514, 1998

SOFO?: Structural monitoring with fiber optic sensors , D. Inaudi, S. Vurpillot, G. Martinola, G. Steinmann, Fib Commission Meeting, Institute or structural engineering, University of applied sciences, Vienna, Austria, Vol 40, 9, 1999

Truly distributed strain and temperature sensing unsing embedded optial fibers, Th?enaz L., Nikl? M, Fellay A., Facchini M., Robert Ph., SPIE conference on Smart Strucutres and Materials, Vol. 3330, p 301-314, 1998

Monitoring of Bridges and Concrete Structures with Fibre Optic Sensors in Europe , A. Del Grosso, K. Bergmeister, D. Inaudi, U. Santa, IABSE Conference, Seoul, Korea, August 2001, 2001

Overview of fibre optic sensing to structural health monitoring applications , D. Inaudi, ISISS'2005, International Symposium on Innovation & Sustainability of Structures in Civil Engineering, Nanjing, China, November 20-22, 2005

Application of distributed Fiber Optic Sensory for SHM , D. Inaudi, B. Glisic, 2nd International Conference on Structural Health Monitoring of Intelligent Infrastructure (SHMII-2'2005), Shenzhen, China, November 16-18, 2005

Reliability and field testing of distributed strain and temperature sensors , D. Inaudi, B. Glisic, SPIE Smart Structures and Materials Conference in San Diego. 2006 February 27, March 2, 2006

Distributed Fiber optic Strain and Temperature Sensing for Structural Health Monitoring , D. Inaudi, B. Glisic, IABMAS'06 The Third Int'l Conference on Bridge Maintenance, Safety and Management, 16 - 19 July 2006, Porto, Portugal, 2006

Distributed Fiber Optic Sensors: Novel Tools for the Monitoring of Large Structures , Daniele Inaudi, Branko Glisic, Geotechnical News, Volume 25, Number 3, Pages 8-12, 2007

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