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（1 廣州大學(xué)土木工程學(xué)院， 廣州 510006； 2 中山大學(xué)土木工程學(xué)院， 廣州 510275; 3 廣州大學(xué)\|臺(tái)灣淡江大學(xué)工程結(jié)構(gòu)災(zāi)害與控制聯(lián)合研究中心， 廣州 510006)

［摘要］為了研究單點(diǎn)往復(fù)荷載作用下鋼管混凝土拱柱結(jié)構(gòu)的抗震性能，設(shè)計(jì)了一個(gè)由兩個(gè)正方形截面的鋼骨混凝土柱與單個(gè)圓鋼管混凝土拱肋組成的單層單跨鋼管混凝土拱柱結(jié)構(gòu)，進(jìn)行了低周往復(fù)加載靜力試驗(yàn)和有限元分析。結(jié)果表明：結(jié)構(gòu)靠近加載點(diǎn)側(cè)的柱腳和拱腳區(qū)域首先出現(xiàn)塑性鉸，且損傷相對(duì)較嚴(yán)重；結(jié)構(gòu)正向加載的承載能力特征值和屈服位移略小于反向加載對(duì)應(yīng)值，但強(qiáng)屈比、延性系數(shù)和剛度略大于反向加載時(shí)的對(duì)應(yīng)值，應(yīng)按位移進(jìn)行設(shè)計(jì)控制；結(jié)構(gòu)屈服后的滯回環(huán)面積和等效粘滯阻尼系數(shù)均呈現(xiàn)大幅度提升，表現(xiàn)出了較好的抗震耗能能力；等效梁柱法可用于預(yù)測(cè)鋼管混凝土拱柱結(jié)構(gòu)的承載力變化規(guī)律。

［關(guān)鍵詞］鋼骨混凝土柱； 鋼管混凝土拱； 抗震性能； 低周往復(fù)加載

中圖分類號(hào)：TU398+.9文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2018)02-0093-05

Experimental study and FEM analysis on the seismic behavior of concrete filled steel tubular arch-column structure

Xu Yong1,2, Zhou Cuiying2, Liu Airong3, Zhang Jichao1

(1 School of Civil Engineering, Guangzhou University, Guangzhou 510006， China; 2 School of Civil Engineering, Sun Yat-Sen University， Guangzhou 510275， China; 3 Guangzhou University-Danjiang University (Taiwan) Joint Research Center for Engineering Structure Disaster Prevention and Control, Guangzhou 510006， China)

Abstract:To investigate the seismic behavior of concrete filled steel tubular (CFST) arch-column structure, a single-layer single-span CFST arch-column structure was designed composed of two steel reinforced concrete columns with square section and single circular CFST arch rib, and  low cyclic loading static test and finite element analysis were conducted. The results show that the plastic hinge first appears in areas of column foot and arch foot near the loading point side, and the damage is relatively serious; the characteristic values of bearing capacity and  yield displacement of the structure under  positive loading are slightly less than the corresponding values under reverse loading, but ratio of intensity and yield strength, ductility coefficient and stiffness is slightly larger than the corresponding values under  reverse loading, and the design should be controlled according to the structural displacement; after yielding, the hysteresis loop area and the equivalent viscous damping coefficient are greatly improved, showing good energy dissipation capacity; equivalent beam-column method can be used to predict the variation of the bearing capacity of concrete filled steel tubular arch-column structure.

Keywords:steel reinforced concrete column; concrete filled steel tubular arch; seismic behavior; low cyclic loading 

*國(guó)家自然科學(xué)基金資助項(xiàng)目(11272095，51378133),國(guó)家留學(xué)基金資助項(xiàng)目（201709945010）,住房和城鄉(xiāng)建設(shè)部科技計(jì)劃資助項(xiàng)目（2013-K4-38）。

作者簡(jiǎn)介：許勇，博士，副教授，Email: xyjerry1975@126.com。