EVALUATION OF COPPER AND LEAD BIOSORPTIONON MODIFIED Azolla pinnata (R. Br.)

Barros, Arielle; Silva, Sirlei Kleiniibing Meuris da

doi:10.30638/eemj.2018.010

Cited by 2 publications

(1 citation statement)

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“…Park et al suggested a factored modal combination method, to predict the actual story shear profiles for the structural models . Barros et al introduced a new multimode load pattern based on the relative participation of each mode to be used in pushover analyses of asymmetric 3‐D building frames . Also, Jan et al improved an upper‐bound pushover analysis procedure .…”

Section: Introductionmentioning

confidence: 99%

The modified dynamic‐based pushover analysis of steel moment resisting frames

Mirjalili

Rofooei

2017

Structural Design Tall Build

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Summary A modified dynamic‐based pushover (MDP) analysis is proposed to properly consider the effects of higher modes and the nonlinear behavior of the structural systems. For this purpose, first, a dynamic‐based story force distribution (DSFD) load pattern is constructed using a linear dynamic analysis, either time history (THA) or response spectrum (RSA). Performing an initial pushover analysis with the DSFD load pattern, a nonlinearity modification factor (NMF) is calculated to modify the DSFD load pattern. The envelope of the peak responses of the structure obtained from 2 pushover analyses with the modified DSFD load pattern as well as the code suggested first mode load pattern are considered as the final demand parameters of the structural system. The efficiency of the proposed MDP procedure is investigated using the results of nonlinear THA besides some existing pushover procedures. For this purpose, the 2‐dimensional 9‐, 15‐, and 20‐story, SAC steel frame building models are considered for parametric studies using OpenSees program. The results indicate that the proposed MDP‐THA and MDP‐RSA methods can significantly improve the performance of the pushover analysis. Considering the accuracy and calculation efforts, the MDP‐RSA method is strongly suggested as an efficient and applicable method to estimate the nonlinear response demands of steel moment resisting frames.

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Section: Introductionmentioning

confidence: 99%