A structural model of buckling-restrained braced frame is set up,and its seismic properties(including model analysis,time-istory and pushover analysis) with finite element software SAP2000.

Brace design of K shape eccentrically braced steel frames;

Collapse Mechanism and Design Criteria of Eccentrically Braced Steel Frames under Cyclic Load;

The numerical example shows that it has simple concept and convenient calculation for solving cross-section optimization design of eccentrically braced steel frames,as well as provides the better approach to real optimization design.

Based on Code for Seismic Design of Building(GB50011),the paper designs three concentrically X-braced steel frames and their structural coefficients are obtained by Push-over analysis.

In order to realize simulated seismic test of large complex steel braced-frame structure at shaking table,regarded main plant structure of some active service large thermal power plant as prototype and according to equivalent principle of structural static and dynamic property,the whole large scale shaking table test model was designed and made.