engleski

Systematic Monitoring of Civil Structures

Monitoring techniques develop rapidly due to enhancements in the field of sensor technology, data acquisition and transmission, storage capacity and evaluation methodologies. Further the acceptance by building owners increases because monitoring becomes an efficient instrument to reduce inspection and maintenance costs and it helps to extend significantly the service life. However monitoring activities yield only to reasonable results if the monitoring concept is coherent and the aims of the campaign are clearly defined. That comprehends that the consequences arising out of the monitoring results are treated with a well defined package of measures. This contribution regards the general aspects of monitoring outlining how a systematic approach in terms of monitoring civil structures is achieved. In addition two projects currently conducted by the authors are presented to outline the wide application area of monitoring activities. The first example deals with two concrete bridges in Croatia, which are set in highly aggressive maritime environment. They are equipped with monitoring systems to observe the structural behaviour and the environmental influence to facilitate bridge maintenance during service. Within the second example a monitoring campaign of a filler beam railway bridge in Germany is presented. The medium span bridge is part of a high-speed line, which allows for velocities up to 250 km/h. The aim of this campaign is to get more information about the dynamic system behaviour and to improve the current design concept.

Monitoring; inspection; maintenance; service life; civil structure; bridge

nije evidentirano