Online monitoring of seismic damage in water distribution systems

Jianwen Liang; Di Xiao; Xinhua Zhao; Hongwei Zhang

doi:10.1117/12.539514

29 July 2004 Online monitoring of seismic damage in water distribution systems

Jianwen Liang, Di Xiao, Xinhua Zhao, Hongwei Zhang

Proceedings Volume 5391, Smart Structures and Materials 2004: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems; (2004) https://doi.org/10.1117/12.539514
Event: Smart Structures and Materials, 2004, San Diego, CA, United States

Abstract

It is shown that water distribution systems can be damaged by earthquakes, and the seismic damages cannot easily be located, especially immediately after the events. Earthquake experiences show that accurate and quick location of seismic damage is critical to emergency response of water distribution systems. This paper develops a methodology to locate seismic damage -- multiple breaks in a water distribution system by monitoring water pressure online at limited positions in the water distribution system. For the purpose of online monitoring, supervisory control and data acquisition (SCADA) technology can well be used. A neural network-based inverse analysis method is constructed for locating the seismic damage based on the variation of water pressure. The neural network is trained by using analytically simulated data from the water distribution system, and validated by using a set of data that have never been used in the training. It is found that the methodology provides an effective and practical way in which seismic damage in a water distribution system can be accurately and quickly located.

Citation Download Citation

Jianwen Liang, Di Xiao, Xinhua Zhao, and Hongwei Zhang "Online monitoring of seismic damage in water distribution systems", Proc. SPIE 5391, Smart Structures and Materials 2004: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, (29 July 2004); https://doi.org/10.1117/12.539514

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