FINITE ELEMENT ANALYSIS ON SEISMIC PROPERTIES OF MID-HIGHRISE STEEL BRACED FRAME

摘要

Recently, a large number of mid-highrise buildings appeared in large cities in China, and they are very popular among the constructions for residents and commerce. Steel braced frame is one of the widely used structural forms in mid-highrise building. In the paper, one nine-storey braced frame in Langfang is investigated as an example by the finite element software ANSYS. Three-dimensional model is proposed in which the seismic response is analyzed including modal analysis, response spectrum analysis, elastic/elastoplastic time-history analysis. Futhermore, the lateral deformation of the structure and the distribution of the braces are computed, and the study can be served as the references of similar structure design.