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張寶生1，崔 松2，盧文生2
(1中國核電工程有限公司鄭州分公司，鄭州450052; 2上海誠建建筑規(guī)劃設計有限公司，上海200081)[摘要] 本文在模態(tài)Pushover分析方法基礎上，推導建立了模態(tài)靜力非線性分析方法，對一棟12層框架結構進行了模態(tài)靜力非線性分析，提出了目標位移求解的等效單自由度體系彈塑性時程分析迭代法，計算結果與相應時程分析結果進行了比較，表明兩者吻合較好，驗證了本文計算方法的有效性，為靜力非線性分析方法的推廣使用提供參考。
[關鍵詞] 框架結構；纖維模型；模態(tài)靜力非線性分析；目標位移Study on the modal Pushover seismic analysis methods of frame structures
Zhang Baosheng1, Ctu song2, Lu Wensheng2
(1 China Nuclear Power Engineering Co., Ltd., Zhengzhou Branch, Zhengzhou 450052, China; 2 Co-Joint Design Group Shanghai, Shanghai 200081, China)Abstract: In this paper, a Modal Pushover Analysis method(MPA) was derived, and the time-history elasto-plastic iteration method was put forward to solve the target displacement of equivalent SDOF system. A 12-story frame structure was studied by the nonlinear dynamic method and Modal Pushover Analysis method, respectively. The analysis results show that the calculating errors are notably reduced with the increase of the vibration modes. When the higher modes are considered, the improvement to the error of top displacement is not as obvious as that ofinter-story drift, which indicates that the higher modes have a larger effect on the inter-story drift than the total displacement of the structures.
Keywords: frame structure; fiber element model; Modal Pushover Analysis(MPA); target displacement
