COMPARATIVE STUDY ON THE BEHAVIOR UNDER THE EFFECT OF TEMPERATURE VARIATIONS OF TWO STEEL STRUCTURAL ELEMENTS OF THE INCHEON GRAND BRIDGE, SEOUL, SOUTH KOREA

Abstract

As we have shown in the previous paper, the structure of the Incheon Grand Bridge Seoul, South Korea is composite, made of concrete and some elements of steel plate-deck type. It was shown before that for the monitored working, six Sonorange UPK sensors were installed on two elements of concrete bridge from north line gap, bridge gap from south line, and on four of steel, 24th lamella from south line, first lamella from north line, first lamella from south line, second lamella from south line. This paper makes a compared analysis the structural response of two steel structural elements, First lamella from south line, respectively, First lamella from north line under the effect of temperature variations of the material they are made of: steel. Finally, this paper contains references of the previous study on the structural response of reinforced concrete elements, making a comparison between the two sets of results, i.e. mathematical models developed using different software. The monitored period is still 2010, processing data collected hourly, every two or four hours. The mathematical modelling of structural monitoring becomes a utilitarian extension of it, the simple presentation of the cause-effect data set, in this case the temperature variation- sensor motion, does not expressively show the whole process nor does it allows the designer to validate his predicted mathematical model during the design phase regarding the structural behaviour. The authors intend to develop this area by future work, especially for bridges with exceptional features and very tall buildings, the actual engine of the entire Structural Health Monitoring activity.