CUMULATIVE SEISMIC DAMAGE PREDICTION OF DAMPER IN ELASTO-PLASTICALLY DAMPED BUILDINGS
This paper discusses simplified theories on cumulative damage evaluation for elasto-plastic (EP) damper under earthquake ground motion. The theories are based on the seismic behavior of single-degree-of-freedom (SDOF) elasto-plastically damped structure, cumulative plastic deformation of damper can be clearly expressed as a function of natural period of structure and duration of earthquake ground motion as well as stiffness parameter and ductility demand. The relationship between cumulative plastic deformation of damper and its maximum deformation is also clarified. Accuracy of proposed evaluation method is demonstrated via numerous time history simulations by using a wide range of multiple-degrees-of-freedom (MDOF) models and earthquake ground motions.
passive control cumulative plastic deformation maximum ductility factor elasto-plastic damper frame
Hiroshi ITO Kazuhiko KASAI
Structural Engineering Research Center, Tokyo Institute of Technology, Yokohama, JAPAN
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）