题名: |
Evaluation of Simplified and State-of-the-Art Analysis Procedures for Steel Frame Buildings Equipped with Supplemental Damping Devices Based on E-Defense Full-Scale Shake Table Tests |
正文语种: |
英文 |
作者: |
Sarven Akcelyan; Dimitrios G. Lignos, A.M.ASCE; Tsuyoshi Hikino;Masayoshi Nakashima, M.ASCE |
作者单位: |
McGill Univ;Nippon Steel and Sumikin Engineering Co. Ltd;Kyoto Univ |
关键词: |
Nonlinear viscous dampers; Buckling-restrained braces; Simplified assessment methods; Supplemental damping; Performance-spectra; Full-scale shake table tests; Nonlinear response history analysis; Seismic effects. |
摘要: |
This paper summarizes a number of key findings that affect the use of linear and nonlinear analysis procedures for the seismic evaluation of steel frame buildings with supplemental damping devices and in particular, buckling-restrained braces (BRBs) and non linear viscous dampers (NVDs). The assessment is based on a comparison of various en gineering dema nd parameters (EDPs) with experime ntal data obtained from a series of full-scale shaking table tests of a five-story steel building equipped with BRBs and NVDs. It is shown that: (1) there is no clear advantage between three-dimensional (3D) and two-dimensional (2D) analyses in the prediction of the dynamic behavior of regular plan view steel frame buildings regardless of the damper type; (2) in corporating the brace and nonlinear viscous damper axial flexibility in the analytical model of the test structure with NVDs significantly improves the overall numerical predictions; and (3) the current effective damping ratio recommended by ASCE 41-13 as part of linear static procedures for the evaluation of frame buildings with BRBs or NVDs may not be conservative enough. A new performance-based design tool called performance-spectra (P-Spectra) is able to reliably predict the EDPs of interest. The P-Spectra tool is also able to validate the efficiency of various damper solutions on the dynamic performance of the test structure. It is demonstrated that P-Spectra can be employed to predict estimates of potential residual deformations that traditional linear and nonlinear static procedures cannot. DOI: 10.1061/(ASCE)ST. 1943-541X.0001474. © 2016 American Society of Civil Engineers. |
出版日期: |
2016.06 |
出版年: |
2016 |
期刊名称: |
Journal of Structural Engineering |
卷: |
Vol.142 |
期: |
NO.06 |
页码: |
04016024 |