ABSTRACT
The Dalian gymnasium allows for 18000spectator capacity with total height of 41.26 m, Figure 1. The roof structure of which is suspendome structure and shaped like a spheroid. Four rings are designed for the prestressed cable system which is consisted of ring cable, radial cable and strut. A. Monitoring content According to the characteristic of the suspendome structure of Dalian gymnasium, the structural
1 INTRODUCTION
Recent years in China, a large number of long-span special structures have been built such as bridges, airport terminals and gymnasiums along with the development of special structure technique and material. These structures, other than suffering from natural hazards like earthquake and storm, are supposed to be subjected to vibrations caused by human factors (thousands of people jumping with the rhythm of music, for example). Nonetheless, aesthetically appealing from an architectural point of view, more recent structures are much lighter, with relatively low first natural frequencies and significant motion amplitudes (Cigada. et al., 2010) (Kang. Et al., 2003). Huge casualties and financial loss would come about if the structure becomes invalid or even collapses. It is now more and more urgent to conduct real-time monitoring system and damage diagnosis on the long-span special structures (Li. et al., 2011).
