Open AccessSensitivity of building response to nonlinear analysis models
Author(s) -
Li Roger,
Pourzanjani Mehran
Publication year - 1999
Publication title -
the structural design of tall buildings
Language(s) - English
Resource type - Journals
eISSN - 1099-1794
pISSN - 1062-8002
DOI - 10.1002/(sici)1099-1794(199903)8:1<15::aid-tal120>3.0.co;2-8
Subject(s) - parametric statistics , nonlinear system , sensitivity (control systems) , structural engineering , frame (networking) , engineering , response analysis , parametric model , seismic analysis , computer science , mathematics , mechanical engineering , statistics , physics , quantum mechanics , electronic engineering
Nonlinear time history analysis is being increasingly utilized in the seismic design and evaluation of building structures. The general intent of such an analysis is to better understand the behavior of a building subjected to a given seismic motion. However, the methodology and particularly the modeling of the structural element properties have a significant impact on the results of this type of analysis. This paper evaluates the analytical models and the incorporated assumptions in two commonly used nonlinear programs: DRAIN‐2DX 1·10 and IDARC 4·0. An instrumented reinforced concrete frame building is analyzed using both programs, and the analytical results are compared with the recorded data. A parametric study follows the program comparison to develop an understanding of the impact of various parameters involved in such an analysis. The study indicates that varying degrees of accuracy are possible with nonlinear time history analysis, depending on the program used and the assumptions incorporated. This paper also evaluates the sensitivity of the analytical results to the parameters involved. Copyright © 1999 John Wiley & Sons, Ltd.