Pushover analysis of different distribute lateral load patterns for seismic assessment of bridge piers

Sheng Guang-zu;Li Jian-zhong;Chen Liang

Journal of Vibration and Shock ›› 2010, Vol. 29 ›› Issue (2) : 170-174,.

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PDF(2512 KB)
Journal of Vibration and Shock ›› 2010, Vol. 29 ›› Issue (2) : 170-174,.
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Pushover analysis of different distribute lateral load patterns for seismic assessment of bridge piers

  • Sheng Guang-zu;Li Jian-zhong;Chen Liang

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Abstract

Pushover analysis was using the incremental distribute lateral load pattern to substitute the inertial load under earthquake response. The difference of lateral load patterns will affect pushover analysis result directly, so the load pattern selection is one of the critical issues in pushover analysis, especially when the higher modes influence is important. In this paper, 7 earthquake records are selected. Earthquake response comparison of 15m、30m and 60m bridge piers between time history analysis (IDA) and pushover analysis of 4 different lateral load patterns. Three various structural levels are used for evaluation of different lateral load patterns pushover analysis. The study seems to show that, the results of adaptive pattern pushover analysis are more precise than other patterns, when the structure in high inelastic range and the high modes effect cannot neglect.

Key words

pushover analysis / higher modes effect / IDA / adaptive lateral load pattern / evaluation

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Sheng Guang-zu;Li Jian-zhong;Chen Liang. Pushover analysis of different distribute lateral load patterns for seismic assessment of bridge piers [J]. Journal of Vibration and Shock, 2010, 29(2): 170-174,
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