A STUDY ON SEISMIC ANALYSIS METHOD FOR SPATICAL LATTICEDSTRUCTURES

摘要

The key problems in seismic analysis for spatial latticed structures are presented in this paper. Firstly, the datarnand a practical formula of damping ratio for steel latticed structures with concrete supporting systems are given.rnSecondly, the method to select and adjust the reasonable seismic waves is narrated when using time- historyrnmethod. Then the results taking different calculating models for the latticed structures are compared. And lastly,rna pseudo excitation random vibration analysis method is presented. It is proved that the analysis of spatialrnlatticed structures subjected to multi-component seismic excitation could not be neglected.