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（1 西南交通大學(xué)土木工程學(xué)院，成都 610031； 2 成都理工大學(xué)環(huán)境與土木工程學(xué)院，成都 610059）

［摘要］采用Pushover法對(duì)在5·12地震中遭受損害的什邡電信大樓進(jìn)行罕遇地震作用下結(jié)構(gòu)的彈塑性分析。研究該結(jié)構(gòu)在罕遇地震作用下的內(nèi)力、變形與破壞情況，比較不同結(jié)構(gòu)模型在多種加載模式下的動(dòng)力特性與抗震性能，研究結(jié)構(gòu)在大震作用下的薄弱環(huán)節(jié)與塑性鉸的分布特點(diǎn)。結(jié)果表明，不同結(jié)構(gòu)模型在罕遇地震作用下均滿(mǎn)足“大震不倒”的抗震設(shè)防目標(biāo)，數(shù)值模擬結(jié)果與實(shí)際破壞情況吻合，且在鐘樓上施加荷載與接收塔對(duì)結(jié)構(gòu)的地震響應(yīng)有放大作用。

［關(guān)鍵詞］彈塑性；推覆分析；塑性鉸；罕遇地震；加載模式

中圖分類(lèi)號(hào)：TU313文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2011)03-0045-05Static elastoplastic analysis of Shifang Telecom building under rare earthquake

Hu Xiao^{1, 2}, Gao Yongtao²

(1 Civil Engineering Department, Southwest Jiaotong University, Chengdu 610031, China；

2 College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu 610059, China)

Abstract:The Pushover method was applied to an example of Shifang Telecom building which suffered from the 5·12 Earthquake. The deformation, internal force and the damage were investigated. The dynamic property and seismic behavior of different models under multiple loading cases were compared. The weakness of the structure and distribution of plastic hinge were studied. The results show that different models can all meet the‘noncollapse under rare earthquake’requirement of seismic resistance, and the numerical simulation agree well with the reality. The load and the receiving tower imposed on the bell tower can amplify the seismic response.

Keywords: elasto-plasitic; Pushover analysis; plastic hinge; rare earthquake; loading pattern

作者簡(jiǎn)介：胡瀟，博士研究生，講師，Email：huxiao@cdut.cn。

參考文獻(xiàn)

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［2］GB50011—2001 建筑抗震設(shè)計(jì)規(guī)范［S］.北京：中國(guó)建筑工業(yè)出版社，2001.

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［6］錢(qián)稼茹，羅文斌. 靜力彈塑性分析——基于性能/位移抗震設(shè)計(jì)的分析工具［J］. 建筑結(jié)構(gòu)，2000，30（6）:21-22.