Journal of South China University of Technology(Natural Science) >

2015 , Vol. 43 >Issue 7: 57 - 67

DOI: https://doi.org/10.3969/j.issn.1000-565X.2015.07.009

Architecture & Civil Engineering

Improved Modal Pushover Analysis Based on Two-Stage Loading Pattern

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  • 1.State Key Laboratory of Disaster Prevention in Civil Engineering//Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai 200092, China; 2.Architectural Design and Research Institute of Tongji University ( Group) Co.,LTD, Shanghai 200092,China
蒋欢军( 1973-) ，男，博士，教授，主要从事工程结构抗震研究．

Received date: 2014-09-28

  Revised date: 2015-02-01

  Online published: 2015-06-03

Supported by

Supported by the National Natural Science Foundation of China( 91315301-4) and the National Key Technology R&D Program of the Ministry of Science and Technology of China during the“12th Five-Yeat Plan”( 2012BAJ13B02)

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Abstract

On the basis of the modal pushover analysis ( MPA) method, a method of improved modal pushover analysis ( IMPA) is proposed. This method overcomes the shortcomings of the fixed loading patterns of the MPA ( Modal Pushover Analysis) method, and its loading mechanisms before and after a structure yields are different. Then, by two examples, the IMPA method is compared with the MPA method in terms of roof displacement, interstory drift angle and elasto-plastic time-history. The results show that the IMPA method is much more accurate than the MPA method when the two methods are used to estimate the structural seismic response.

Key words： static elasto-plastic analysis; modal pushover analysis; lateral loading pattern; two-stage loading pattern; structural seismic response; roof displacement; inter-story drift angle

Cite this article

Jiang Huan-jun Lei Jie Lü Shang-wen . Improved Modal Pushover Analysis Based on Two-Stage Loading Pattern[J]. Journal of South China University of Technology(Natural Science), 2015 , 43(7) : 57 -67 . DOI: 10.3969/j.issn.1000-565X.2015.07.009

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