SEISMIC PERFORMANCE OF STEEL FRAMES COUPLED WITH VISCO-ELASTIC BRACINGS
In the present paper the seismic behavior of semi-continuous steel frames coupled with visco-elastic dissipative bracings is analyzed. The advantages due the employment of the dissipative system for improving the seismic performance of semi-continuous steel frames in the case of both low and high intensity earthquake ground motions is pointed out. The design of the hybrid system is faced by solving a SDOF problem first, and then by considering the MDOF response related to the multi-storey coupled frames behavior. On the basis of the proposed procedure the dissipative bracing for the seismic up-grading of a six-floor semi-continuous steel frame was designed. The seismic performance of such equipped system was then analyzed through incremental nonlinear dynamic analyses that allowed to check the accuracy of the design strategy as well as to point out the advantages given by the coupled system compared to those of the bare semi-continuous steel frame.
semi-continuous steel frames visco-elastic dampers nonlinear analysis.
C. Amadio M. Bisetto L. Macorini
Associate professor, Dept. of Civil and Environmental Engineering, University of Trieste. Italy Research engineer Dept. of Civil and Environmental Engineering, University of Trieste. Italy Research fellow Dept. of Civil and Environmental Engineering, University of Trieste. Italy
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）