本文關(guān)鍵詞：Y形高強鋼組合偏心支撐框架結(jié)構(gòu)彈塑性層剪力分布研究　出處：《建筑結(jié)構(gòu)學(xué)報》2016年11期 　論文類型：期刊論文

  更多相關(guān)文章： 框架結(jié)構(gòu) 高強鋼 偏心支撐 近場(遠場)地震 非線性時程分析 層剪力分布

【摘要】：為研究Y形高強鋼組合偏心支撐框架結(jié)構(gòu)(Y-HSS-EBF)的彈塑性層剪力分布,設(shè)計了4個不同層數(shù)且具有理想整體屈服模式的Y-HSS-EBF結(jié)構(gòu),同時建立了Y-HSS-EBF結(jié)構(gòu)振動臺試驗試件的有限元模型并進行了驗證,在此基礎(chǔ)上考慮了結(jié)構(gòu)層數(shù)、近場地震的速度脈沖效應(yīng)以及遠場地震加速度累積循環(huán)效應(yīng)的影響,通過非線性時程分析獲得了Y-HSS-EBF結(jié)構(gòu)在罕遇水準近場、遠場地震下層剪力分布,基于GB 50011—2010《建筑抗震設(shè)計規(guī)范》的底部剪力法提出了Y-HSS-EBF結(jié)構(gòu)彈塑性層剪力分布模式,并與現(xiàn)有層剪力分布模式進行了對比。結(jié)果表明:近場地震波的速度脈沖效應(yīng)以及遠場地震波的加速度循環(huán)效應(yīng)對Y-HSS-EBF結(jié)構(gòu)的層剪力分布影響較大,應(yīng)考慮其對結(jié)構(gòu)層剪力分布的影響;建議的層剪力分布模式與時程分析結(jié)果的誤差最小,在精度上優(yōu)于文中其他層剪力分布模式,可以為Y-HSS-EBF結(jié)構(gòu)基于性能的設(shè)計方法提供參考。
[Abstract]:In order to study the elastoplastic shear force distribution of Y-HSS-EBF frame structure with Y-shaped high strength steel composite eccentrically braced frame. Four Y-HSS-EBF structures with different layers and ideal global yield model were designed and the finite element model of the shaking table test specimens of Y-HSS-EBF structure was established and verified. On this basis, the effects of structure layer number, velocity pulse effect of near-field earthquake and cumulative cyclic effect of far-field earthquake acceleration are considered. The shear distribution of Y-HSS-EBF structure in the near field of rare leveling and far field earthquake is obtained by nonlinear time-history analysis. Based on the bottom shear method of GB50011-2010 Code for Seismic Design of buildings, the elastic-plastic shear distribution model of Y-HSS-EBF structures is proposed. And compared with the existing shear distribution model, the results show that:. The velocity pulse effect of near-field seismic wave and the acceleration cycle effect of far-field seismic wave have great influence on the layer shear distribution of Y-HSS-EBF structure. The influence of the structure layer shear force distribution should be considered. The proposed laminar shear distribution model and the time history analysis result have the smallest error and the accuracy is better than the other layer shear distribution modes in this paper. It can be used as a reference for the performance-based design method of Y-HSS-EBF structure.
【作者單位】： 西安建筑科技大學(xué)土木工程學(xué)院;西安建筑科技大學(xué)材料科學(xué)與工程博士后流動站;西安理工大學(xué)土木建筑工程學(xué)院;
【基金】：國家自然科學(xué)基金項目(51178382)
【分類號】：TU398
【正文快照】： 0引言偏心支撐結(jié)構(gòu)兼有中心支撐框架結(jié)構(gòu)的剛度和純框架結(jié)構(gòu)的延性,是一種優(yōu)良的抗震結(jié)構(gòu)體系,國內(nèi)外學(xué)者已對偏心支撐結(jié)構(gòu)性能及設(shè)計方法進行了大量研究。石永久等[1]對耗能梁段為彎曲屈服型的偏心支撐鋼框架進行了水平低周往復(fù)荷載的試驗,研究其滯回性能,結(jié)果表明偏心支撐框

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