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    石鹿言¹，  李振寶¹，  張智宇²，  李志勇²，  徐克利³，  鄒劍強(qiáng)³
    （1 北京工業(yè)大學(xué)工程抗震與結(jié)構(gòu)診治北京市重點(diǎn)實(shí)驗(yàn)室，北京100124；2 中國(guó)運(yùn)載火箭技術(shù)研究院，北京100076；3 中國(guó)航空規(guī)劃建設(shè)發(fā)展有限公司，北京100120）

[摘要] 通過對(duì)有上柱的空腹式格構(gòu)鋼柱以及完全空腹式格構(gòu)鋼柱在低周反復(fù)荷載作用下的構(gòu)件試驗(yàn)，研究了空腹式格構(gòu)鋼柱的滯回性能及抗震性能。結(jié)果表明，對(duì)于有上柱的空腹式格構(gòu)鋼柱，上柱底端部位屬于薄弱部位，最早發(fā)生破壞；對(duì)于完全空腹式格構(gòu)鋼柱，中間的受力小梁最早發(fā)生破壞，構(gòu)件具有良好的延性性能，耗能性能明顯；另外，為研究空腹式格構(gòu)鋼柱在地震作用下的動(dòng)力反應(yīng)及破壞機(jī)理提供了兩種恢復(fù)力模型，為進(jìn)一步對(duì)其進(jìn)行彈塑性地震反應(yīng)分析提供了條件。
[關(guān)鍵詞] 空腹式；格構(gòu)鋼柱；滯回曲線；延性；能量耗散系數(shù)
中圖分類號(hào)：TU391    文獻(xiàn)標(biāo)識(shí)碼：A    文章編號(hào)：1002-848X(2011) S2-0241-03

Study on the seismic behavior of open spandrel latticed steel columns
Shi Luyan¹,  Li Zhenbao¹,  Zhang Zhiyu²,  Li Zhiyong²,  Xu Keli³,  Zou Jianqiang³
(1 Beijing Key Lab of Earthquake Engineer and Structural Retrofit, Beijing University of Technology, Beijing 100124, China;  2 China Academy of Launch Vehicle Technology, Beijing 100076, China; 3 China Aviation Planning and Construction Development Co., Ltd., Beijing 100120, China)

Abstract: The seismic behavior and the hysteretic behavior of open spandrel latticed steel columns was studied through the test of open spandrel latticed steel columns with the upper prop and the test of the complete open spandrel latticed steel columns. The results show that the end lap of the upper prop is the weak part of the open spandrel latticed steel columns with the upper prop, destroyed earliest. In addition, intermediate force received beams are destroyed earliest, it has good ductility performance,and its energy dissipation ability is very obvious. Furthermore, two restoring force models for the study on the dynamic response and the failure mechanism of open spandrel latticed steel columns are supplied, provides the conditions for further elastoplastic seisnuc response analysis.
Keywords: open spandrel; latticed steel columns; hysteretic curve; skeleton curve; ductility