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章鋼雷1，  曹雙寅2，  敬登虎2，  陳玉立3

（1中船第九設(shè)計(jì)研究院工程有限公司，上海200063；2東南大學(xué)土木工程學(xué)院，南京210096；3蘇州市建筑設(shè)計(jì)研究院有限責(zé)任公司，蘇州215021)

 

[摘要] 對(duì)兩榀鋼板-磚砌體組合框架在相對(duì)較低豎向壓應(yīng)力水平下進(jìn)行低周反復(fù)荷載試驗(yàn)，得到其滯回曲線。在此基礎(chǔ)上，將骨架曲線簡(jiǎn)化為三線型恢復(fù)力模型。通過(guò)試驗(yàn)擬合的方法，得到了鋼板-磚砌體組合框架統(tǒng)一的骨架線和剛度退化模型。通過(guò)與試驗(yàn)得到的滯回曲線進(jìn)行比較，結(jié)果表明本文的恢復(fù)力模型精度較高，此外考慮了參數(shù)材料強(qiáng)度的影響，認(rèn)為材料強(qiáng)度在一定范圍內(nèi)變化時(shí)，上述恢復(fù)力模型仍能較好地反映鋼板．磚砌體組合框架的恢復(fù)力特性。

[關(guān)鍵詞] 鋼板-磚砌體；組合框架；恢復(fù)力模型；剛度退化

中圖分類號(hào)：TU398    文獻(xiàn)標(biāo)識(shí)碼：A  文章編號(hào)：1002-848X(2012) S2-0320-05

 

Zhang Ganglei1,  Cao Shuangyin2, Jing Denghu2,  Chen Yuli3

(1 China Shipbuilding NDRI Engineering Co., Ltd., Shanghai 200063, China; 2 School of Civil Engineering, Southeast University, Nanjing 210096, China; 3 Suzhou Institute of Architectural Design Co., Ltd., Suzhou 215021, China)

 

Abstract: Two steel plate-brick masonry composite frames with low verticalload level were tested under low cyclic loading and the hysteretic curve was studied. Based on the experimental research, the skeleton curve was simplified as a trilinear hysteretic model. The unified skeleton curve model and stiffness degradation model were proposed according to fitting the test data. Contrasted with the tested hysteretic curve, the hysteretic model has high accuracy, then the effect of material strength was considered, wluch shows that the former hysteretic model finely reflects the hysteretic characteristics of steel plate-brick masonry composite frames, when material strength varies in a certain range.

Keywords: steel plate-brick masonry; composite frame; hysteretic model; stiffness degradation