TY - JOUR
T1 - Simplified Estimation Method for Collective Uncertainty-Propagations of Hysteretic Energy Dissipating Device’s Properties
AU - Shin, Dong Hyeon
AU - Kim, Hyung Joon
N1 - Publisher Copyright:
© 2018, Korean Society of Steel Construction.
PY - 2018/12/1
Y1 - 2018/12/1
N2 - Hysteretic energy dissipating devices (HEDDs) have been increasingly applied to building construction to improve the seismic performance. The seismic responses of such damped structures are significantly affected by HEDD’s structural properties. An accurate investigation on the propagation of HEDD’s structural properties is required for reasonable evaluation of the seismic performance of a structure. This study aims to develop simplified methods that can estimate the collective uncertainty-propagation to the seismic response of damped structures employing HEDDs. To achieve this, three- and six-story steel moment-resisting frames were selected and the propagations of the individual HEDD’s property-uncertainties were evaluated when they are subjected to various levels of seismic demand. Based on the result of individual uncertainty-propagations, a simplified method is proposed to evaluate the variation of seismic response collectively propagated by HEDD’s property-uncertainties and is verified by comparing with the exact collective uncertainty-propagation calculated using the Monte Carlo simulation method. The proposed method, called as a modified SRSS method in this study, is established from a conventional square root of the sum of the squares (SRSS) method with the relative contributions of the individual HEDD’s property-uncertainty propagations. This study shows that the modified SRSS method provides a better estimation than the conventional SRSS method and can significantly reduce computational time with reasonable accuracy compared with the Monte Carlo simulation method.
AB - Hysteretic energy dissipating devices (HEDDs) have been increasingly applied to building construction to improve the seismic performance. The seismic responses of such damped structures are significantly affected by HEDD’s structural properties. An accurate investigation on the propagation of HEDD’s structural properties is required for reasonable evaluation of the seismic performance of a structure. This study aims to develop simplified methods that can estimate the collective uncertainty-propagation to the seismic response of damped structures employing HEDDs. To achieve this, three- and six-story steel moment-resisting frames were selected and the propagations of the individual HEDD’s property-uncertainties were evaluated when they are subjected to various levels of seismic demand. Based on the result of individual uncertainty-propagations, a simplified method is proposed to evaluate the variation of seismic response collectively propagated by HEDD’s property-uncertainties and is verified by comparing with the exact collective uncertainty-propagation calculated using the Monte Carlo simulation method. The proposed method, called as a modified SRSS method in this study, is established from a conventional square root of the sum of the squares (SRSS) method with the relative contributions of the individual HEDD’s property-uncertainty propagations. This study shows that the modified SRSS method provides a better estimation than the conventional SRSS method and can significantly reduce computational time with reasonable accuracy compared with the Monte Carlo simulation method.
KW - Collective uncertainty-propagation
KW - Hysteretic energy dissipating devices
KW - Modified SRSS method
KW - Monte Carlo simulation
KW - Relative contribution
UR - http://www.scopus.com/inward/record.url?scp=85058004804&partnerID=8YFLogxK
U2 - 10.1007/s13296-018-0050-x
DO - 10.1007/s13296-018-0050-x
M3 - Article
AN - SCOPUS:85058004804
SN - 1598-2351
VL - 18
SP - 1508
EP - 1524
JO - International Journal of Steel Structures
JF - International Journal of Steel Structures
IS - 5
ER -