Civil Engineering Association

Hi, I'm looking for this paper:

Adaptive Modal Combination Procedure for Nonlinear Static Analysis of Building Structures
Erol Kalkan, Sashi K. Kunnath
ASCE J. Struct. Engrg.
Volume 132, Issue 11, pp. 1721-1731 (November 2006)

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Thanks in advance.

Dear user

Get it from below:

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regards

Hi Dear friend,

I put the needed paper at this site:

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best regards

Adaptive Modal Combination Procedure for Nonlinear Static Analysis of Building Structures

Author: Erol Kalkan, S.M.ASCE ; and Sashi K. Kunnath, M.ASCE | Size: 0.37 MB | Format: PDF | Quality: Unspecified | pages: 2006

A new pushover analysis procedure derived through adaptive modal combinations .AMC. is proposed for evaluating the
seismic performance of building structures. The methodology offers a direct multimode technique to estimate seismic demands and
attempts to integrate concepts built into the capacity spectrum method recommended in ATC-40 .1996., the adaptive method originally
proposed by Gupta and Kunnath .2000. and the modal pushover analysis advocated by Chopra and Goel .2002.. The AMC procedure
accounts for higher mode effects by combining the response of individual modal pushover analyses and incorporates the effects of varying
dynamic characteristics during the inelastic response via its adaptive feature. The applied lateral forces used in the progressive pushover
analysis are based on instantaneous inertia force distributions across the height of the building for each mode. A novel feature of the
procedure is that the target displacement is estimated and updated dynamically during the analysis by incorporating energy-based modal
capacity curves in conjunction with constant-ductility capacity spectra. Hence it eliminates the need to approximate the target displacement
prior to commencing the pushover analysis. The methodology is applied to two existing steel moment-frame buildings and it is
demonstrated that the AMC procedure can reasonably estimate critical demand parameters such as roof displacement and interstory drift
for both far-fault and near-fault records, and consequently provides a reliable tool for performance assessment of building structures.

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