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（1 浙江大學(xué)建筑設(shè)計(jì)研究院， 杭州 310028； 2 東南大學(xué)土木學(xué)院， 南京 210096）

［摘要］基于目前低屈服點(diǎn)鋼主要是作為耗能器（阻尼器）應(yīng)用于上部結(jié)構(gòu)的耗能減震，嘗試設(shè)計(jì)了一種受力清晰、構(gòu)造合理的多向低屈服點(diǎn)鋼隔震耗能器支座，并對(duì)其進(jìn)行初步的理論、試驗(yàn)研究和軟件分析，為低屈服點(diǎn)鋼隔震耗能支座的研制與應(yīng)用開展一些有益的探索。對(duì)國(guó)產(chǎn)低屈服點(diǎn)鋼進(jìn)行了拉伸性能試驗(yàn)，得到了材料的屈服強(qiáng)度和延性。根據(jù)試驗(yàn)結(jié)果，通過ANSYS有限元程序?qū)Χ嘞虻颓c(diǎn)鋼隔震耗能支座模型進(jìn)行了低周反復(fù)荷載作用下的多參數(shù)化驗(yàn)證性分析。結(jié)果表明：多向低屈服點(diǎn)鋼隔震耗能支座具有較低的屈服點(diǎn)，較大的延性和耗能能力。通過不同的參數(shù)對(duì)比得到，隨著支座腹板高厚比的減小、高寬比的增大，支座的耗能能力增強(qiáng)，等效阻尼比較大。

［關(guān)鍵詞］低屈服點(diǎn)鋼； 隔震耗能支座； 延性； 拉伸性能試驗(yàn)； 低周反復(fù)試驗(yàn)； 等效阻尼比

中圖分類號(hào)：TU311.2      文獻(xiàn)標(biāo)識(shí)碼：A      文章編號(hào)：1002-848X(2013)15-0113-04

 

Zhang Wang1, Shu Ganping2

 (1 Architectural Design and Research Institute of Zhejiang University, Hangzhou 310028, China; 2 School of Civil Engineering, Southeast University, Nanjing 210096, China)

 

Abstract: Nowadays low yield point steel is mainly used for seismic energy dissipation in upper structure as dampers. But it’s necessary to design multidirectional low yield point steel isolation bearing as simple, reasonable structure. And preliminary theoretical studies, experimental studies for the bearing are also worthy. Based on the tensibility experiment of low yield point steel, the yield strength, ductility of the steel were obtained. With the results of the experiment, multi-parametric analysis of low cycled reversed loading to the multidirectional low yield point steel isolation bearing was also carried with ANSYS finite element program. The results indicate that the bearing has low yield points, high ductility and good energy dissipation capacity. Comparing with different parameters, with the decreases of the height and thickness ratio of webs and the height and width ratio of webs, the energy dissipation capacity is increased.

Keywords: multidirectional isolation bearing; mild steel; ductility; tensibility experiment; low cycled reversed loading

作者簡(jiǎn)介：張望，碩士，助理工程師，Email: zhangwangwa@hotmail.com。

 

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