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Matjaz Dolsek 《Bulletin of Earthquake Engineering》2010,8(6):1309-1329
A computing environment for the seismic performance assessment of reinforced concrete frames has been developed in Matlab
in combination with OpenSees. It includes several functions which provide calculations of the moment-rotation relationship
of plastic hinges in columns and beams, rapid determination of simplified nonlinear structural models, the post-processing
of the results of analyses and structural performance assessment with different methods. The user can add new functions to
the PBEE toolbox in order to support additional procedures for the seismic performance assessment of RC frames, or can just
change the rules for determining the moment-rotation relationship of plastic hinges in columns and beams, which are the main
source of uncertainty in simplified nonlinear models. In the paper, the capabilities of the computing environment (PBEE toolbox)
are first explained by focusing on the procedures for determining the moment-rotation relationship of plastic hinges. Different
examples are then presented, starting with a comparison between the calculated response of a four-storey RC frame building
and the response obtained in a pseudo-dynamic experiment. The calculated response was determined with the two different structural
models which are later on used for the demonstration of the seismic performance assessment of the same structure by the N2
method. Lastly, seismic performance assessment of an eight-storey frame is performed by using incremental dynamic analysis
with consideration of the modelling uncertainties. 相似文献
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Matjaz Mikos 《Landslides》2015,12(6):1235-1240
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Matjaz Mikos 《Landslides》2015,12(4):827-830
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Matjaz Dolsek 《地震工程与结构动力学》2009,38(6):805-825
Incremental dynamic analysis (IDA) has been extended by introducing a set of structural models in addition to the set of ground motion records which is employed in IDA analysis in order to capture record‐to‐record variability. The set of structural models reflects epistemic (modeling) uncertainties, and is determined by utilizing the latin hypercube sampling (LHS) method. The effects of both aleatory and epistemic uncertainty on seismic response parameters are therefore considered in extended IDA analysis. The proposed method has been applied to an example of the four‐storey‐reinforced concrete frame, for which pseudo‐dynamic tests were performed at the ELSA Laboratory, Ispra. The influence of epistemic uncertainty on the seismic response parameters is presented in terms of summarized IDA curves and dispersion measures. The results of extended IDA analysis are compared with the results of IDA analysis, and the sensitivity of the seismic response parameters to the input random variable using the LHS method is discussed. It is shown that epistemic uncertainty does not have significant influence on the seismic response parameters in the range far from collapse, but could have a significant influence on collapse capacity. Copyright © 2008 John Wiley & Sons, Ltd. 相似文献
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