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結(jié)構(gòu)彈塑性分析基底剪力的判斷與探討
劉浩1,甄圣威2,劉鵬1,汪洋2
摘 要

1 奧雅納工程顧問, 北京 100020; 2 奧雅納工程顧問, 深圳 518048

[摘要]在某項(xiàng)目的彈塑性分析過程中曾發(fā)現(xiàn),結(jié)構(gòu)在某些地震波作用下出現(xiàn)了彈塑性分析基底剪力大于彈性分析基底剪力的情況,這與一般的經(jīng)驗(yàn)判斷不相符。研究了地震波的能量譜特性,并以單自由度體系為例分析了結(jié)構(gòu)基底剪力與地震波總輸入能之間的關(guān)系,提出了該現(xiàn)象發(fā)生原因。通過研究處于不同周期的單自由度體系和框架結(jié)構(gòu)彈性分析基底剪力和彈塑性分析基底剪力的關(guān)系,驗(yàn)證了該分析的正確性。

[關(guān)鍵詞]彈塑性分析; 基底剪力; 總輸入能; 能量譜

中圖分類號(hào):TU318文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1002848X(2014)12012205

Discussion on the base shear of structural elastoplastic analysis

Liu Hao1, Zhen Shengwei2, Liu Peng1, Wang Yang2

 (1 Arup, Beijing 100020, China; 2 Arup, Shenzhen 518048, China)

Abstract:A phenomenon that the base shear in elastoplastic analysis is greater than that in elastic analysis under some seismic wave was found in the process of an elastoplastic analysis of a practical project, which is not consistent with general experience. Detailed analyses were performed on energy spectrum and the relationship of base shear and total input energy based on single degree of freedom system, in which the cause of the phenomenon was proposed. And the correctness of the analysis was verified by studying the relationship of base shears in elastic analysis and in elastoplastic analysis of single degree freedom system and frame with different periods.

Keywords:elastoplastic analysis; base shear; total input energy; energy spectrum

作者簡介:劉浩,碩士,Email: kevin.liu@arup.com

參考文獻(xiàn)

\[1\]甄圣威,汪洋. 超高層結(jié)構(gòu)彈塑性模擬中若干問題的討論\[J\]. 建筑結(jié)構(gòu),2013,43(S1)546551.

\[2\]王亞勇.關(guān)于設(shè)計(jì)反應(yīng)譜、時(shí)程法和能量方法的探討\[J\].建筑結(jié)構(gòu)學(xué)報(bào),2000,21(1)2128.

\[3\]劉哲鋒,沈蒲生.地震動(dòng)輸入能量譜的研究\[J\].工程抗震與加固改造,200628(4)15.

\[4\]肖明葵,劉綱,白紹良,等.基于能量反應(yīng)的地震動(dòng)輸入選擇方法的討論\[J\].世界地震工程,2006,22(3)8994.

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