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Título del libro: Structural Health Monitoring Of Intelligent Infrastructure - Proceedings Of The 4th International Conference On Structural Health Monitoring Of Intelligent Infrastructure, Shmii 2009
Título del capítulo: Novel structural monitoring system for the Chiapas bridge

Autores UNAM:
ROBERTO GOMEZ MARTINEZ; DAVID MURIA VILA; MIGUEL ANGEL MENDOZA GARCIA; ABRAHAM ROBERTO SANCHEZ RAMIREZ; JOSE ALBERTO ESCOBAR SANCHEZ;

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Autores externos:

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Idioma:
Inglés

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Año de publicación:
2009

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Palabras clave:

Electronic instrumentation; Environmental control; Instrumentation systems; Optical fiber Bragg grating sensors; Self-contained systems; Structural health monitoring (SHM); Structural Monitoring Systems; Temperature and humidities; Environmental management; Fiber optic sensors; Humidity control; Instruments; Monitoring; Optical fibers; Piers; Structural health monitoring; Bridges

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Resumen:

This paper describes the methodology and on-line equipment used for the Structural Health Monitoring (SHM) of the Chiapas Bridge. This installation represents the first SHM instrumented bridge in Mexico using optical fiber sensors and SHM techniques. The bridge was open to traffic in 2003 and is the most important structure of an entire highway going through the state of Chiapas in Southwest Mexico and part of the Transamerican highway system. The superstructure is a continuous grade 50 steel orthotropic box of constant height comprising 8 spans, with a total length of 1208m. Pier heights range from 27 to 89 m measured from the bottom of the dam. Steel jackets of the offshore type were used as the main elements of the piers. During construction of the superstructure, a basic monitoring system was initially implemented to monitor and assess the structural behavior of the bridge. However, advances in SHM techniques and the importance of the Chiapas Bridge in the region prompted the need for a new and advanced instrumentation system. The new solution is based on a multi-point, multi-sensor monitoring system based on optical fiber Bragg grating sensors and opto-electronic interrrogators. The self contained system works as stand-alone equipment and allows for the in-situ, real-time monitoring of the bridge as well as its long-term condition. A total of 82 fiber optic strain and temperature sensors were installed in key bridge locations. An environmental control cabinet is provided to maintain adequate temperature and humidity levels for all the electronic instrumentation. Local electric power is supplied by a solar panel system.

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Entidades citadas de la UNAM:

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Fuente:


ISBN:
9783905594522
Editorial:

Tipo de producto:
Conference Paper