Finite element analysis on hysteretic behavior of steel staggered Pratt truss structure under cyclic load

摘要

Based on the test results of a one-third scale, five-story steel staggered structure with Pratt truss under cyclic loading, a finite element(FE)model was established and verified by comparing the numerical results with test ones. In general, they agreed well. After that, a series of 18-story Pratt truss buildings were designed, and numerical analysis was carried out by using the FE model to study the influences of some main parameters on seismic behavior of this structural system, including height to width ratio of building,aspect ratio of truss, height to width ratio of open-web panel, and truss arrangement in ground floor. At last,conclusions and suggestions were put forward for design based on the results of numerical analysis.