Comparative Study On Elastic-plastic Time-history Analysis And Shaking Table Test Of Single-span Single-story Steel Structures Of Gabled Frame

Gabled frame is a primary structural form of single-story lightweight steel frame and has been widely used in China, but the research on its seismic behavior is not thoroughly, especially in bearing capacity and failure mechanism under strong earthquake. Therefore the relative codes on seismic design and details are not well treated. Issues mentioned above restrict the application of gabled frame structures in high-seismic fortification intensity district in our country.To solve these problems, shaking table test was carried out on a 1/3 scale single-span single-story model structure by our research team, which was derived from GJ 18-2C in the Standard Design Drawings for Steel Structure of Lightweight Building based on similarity theory. This paper used ANSYS program to establish a finite element numerical model to evaluate its behavior. After the validation of the numerical model, seismic behavior of prototype structure was analyzed. Then results from analysis were compared with those from shaking table test in terms of similarity ratio. Finally, rules of acceleration and displacement response, as well as the failure model of the gabled frame under earthquake were suggested, which revealed that the seismic performance of this structure was very well, and satisfied the demand of "no damage under frequent earthquake, repairable under middle earthquake, and no collapse under large earthquake" by our Code for Seismic Design of Buildings.As a result, some useful conclusions were suggested through the Comparative study on elastic-plastic time-history analysis and shaking table test of single-span single-story gabled frame structures, which might be referred for the further study on seismic behavior of gabled frame structures.