Overall Stability of the Long Span Steel Roof Structure of Hangzhou International Conference Center

Large span structures are widely used in modern buildings because of their novel forms or shapes, light self-weight and lower construction cost. The buckling behavior of the large span structures under loads are much complex and hard to understand. The non-linear stability analysis and the incremental-interation tracing methods are necessary for design complementory during design. The geometry imperfection influences on structure stability are also needed to be considered. There are no special analysis technics and judging methods for overall stability of the large span structures in current national design codes of our country. It is necessary to carry on non-linear overall stability analysis for every specific structure to obtain the overall stability behavior of structures during design.