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The research of the performance-based seismic design is now in the ascendant, and the pushover analysis as one main analytical method of the performance-based seismic design has been studied extensively. The lateral load pattern is one key problem of the pushover analysis, so the analysis and comparison of many different lateral load patterns are necessary. In this paper, many different lateral load patterns derived by former scholars are summarized, and at the same time, one new instantaneous adaptive lateral load pattern is developed. Finally, the applied scope, the validity and the effect of many different lateral load patterns used in the structural plastic analysis are compared through the analysis of two examples.
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