STUDY ON THE INFLUENCE OF THE TESTED SUBSTRUCTURE IN PSEUDODYNAMIC TEST
Aiming at the influence of the tested substructure in the steel-frame pseudodynamic test, substructure pseudodynamic tests were carried out on a six-story building with the tested substructure in the form of a single-degree of freedom (SDOF) system and a multi- degree of freedom (MDOF) system, i. e., a single- story substructure and a two-story substructure respectively. The substructure pseudodynamic tests were implemented on a two-story steel frame with 1/3 scale by using MTS computer-actuator on-line system. The testing results were analyzed from the aspects of story displacement, base shearing force and story relative acceleration. The investigated results indicate that the influence of the number of freedom degree of the tested substructure on the entire structural responses is small, as the results obtained by adopting the SDOF tested substructure are mostly coincident with the MDOF. Therefore, in substructure pseudodynamic tests the computer simulation on elastic stories almost has no effect on the seismic responses of the entire structure. Furthermore, regardless of the SDOF or the MDOF tested substructure, the seismic responses of the entire structure under the earthquake wave can be obtained accurately, given that the elastoplastic responses may only occur at the bottom story.
Pseudodynamic test Substructure Steel frame Multi-degree of freedom
Decai Wang Xianguo Ye Lei Chang
School of Civil Engineering, Hefei University of Technology, China
国际会议
上海
英文
310-315
2007-12-04（万方平台首次上网日期，不代表论文的发表时间）