| In this paper author proposes the static and dynamic QR-method for the mega-frame with suspension and apply which workout the relevant static and dynamic (seismic time-history analysis) program. Furthermore, according to behavioral characteristic of mega-frame? workout two element which be applied in buckling analysis. The first is considered effect of axis force that distribute equably along itself and it is applied in initial design of mega-frame. The calculation result show that the element can be applied for mega-frame and it more accurate than the ordinary element, furthermore it has some advantage to applying in some aspect of civil engineering. Because numerous mega-columns and mega-beams of mega-frame are thin-walled beam, hence the torsion can' t be neglected in structural calculation, and so in the calculation of structural overall stability, the coupling of bend and torsion can' t be neglected . The second is the thin-walled beam with opening section element which be considered effect of axis force and the coupling of bend and torsion. In addition, author analyse overall stability of mega-frame when it endures vertical seismic action, the result indicates that the vertical seismic greatly affects overall stability of mega-frame with suspension system.
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