An alternative modal combination rule for adaptive pushover analysis
| Autor: | Alireza Tajik Davoudi, Reza Abbasnia, Mohammad-Mahdi Maddah, Ali Khodam, Abdolreza Sarvghad-Moghadam |
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| Rok vydání: | 2016 |
| Předmět: |
021110 strategic
defence & security studies 0211 other engineering and technologies Mode (statistics) 020101 civil engineering 02 engineering and technology Building and Construction Displacement (vector) 0201 civil engineering Nonlinear system Quadratic equation Modal Time history Architecture Benchmark (computing) Algorithm Civil and Structural Engineering Sign (mathematics) Mathematics |
| Zdroj: | The Structural Design of Tall and Special Buildings. 25:325-339 |
| ISSN: | 1541-7794 |
| DOI: | 10.1002/tal.1260 |
| Popis: | Summary The main purpose of the present study is to develop an alternative modal combination rule for use in the adaptive pushover analysis. Since the quadratic modal combination rules do not take into account the sign reversals of the modal load vectors in the higher modes, the accuracy of the advanced pushover methods are decreased. The proposed modal combination rule is a direct vectorial addition technique in which the relative contribution of each mode and its sign are taken into account. The proposed modal combination rule is employed within the displacement-based adaptive pushover technique, and an alternative pushover procedure is developed. In order to verify the accuracy of the proposed method, two reference buildings are used, and the obtained results from the proposed method and nonlinear time history analysis are compared. It is concluded that the proposed method can estimate the benchmark responses with remarkable accuracy. Copyright © 2016 John Wiley & Sons, Ltd. |
| Databáze: | OpenAIRE |
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