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（東北大學(xué)資源與土木工程學(xué)院，沈陽(yáng) 110004）

［摘要］通過(guò)8根組合柱的試驗(yàn)，分析了影響GFRP管勁性鋼筋混凝土組合柱的軸心受壓承載力主要因素。試驗(yàn)結(jié)果表明，組合柱的承載力隨著GFRP管壁厚度的增加而提高；內(nèi)部型鋼約束混凝土并與鋼筋共同承擔(dān)一定荷載，提高了組合柱的承載力?；跇O限平衡理論和統(tǒng)一理論，分別建立了GFRP管勁性鋼筋混凝土組合柱和GFRP管鋼筋混凝土組合柱的軸壓承載力計(jì)算公式，計(jì)算結(jié)果與試驗(yàn)結(jié)果吻合良好。統(tǒng)一理論的計(jì)算結(jié)果與試驗(yàn)結(jié)果更為接近，且計(jì)算公式簡(jiǎn)單。

［關(guān)鍵詞］GFRP管；勁性鋼筋混凝土；組合柱；軸壓承載力；計(jì)算公式

中圖分類(lèi)號(hào)：TU398，TU312文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2011)08-0102-04

Calculation on bearing capacity of GFRP tube filled with steel-reinforced concrete composite column subjected to axial loading

Chen Bailing, Qin Guopeng, Wang Lianguang(School of Resources & Civil Engineering, Northeastern University, Shenyang 110004, China)

Abstract:According to the experimental research of 8 composite columns, the major factors of affecting the bearing capacity of GFRP tube filled with steel-reinforced concrete composite column subjected to axial loading were analyzed. The test results show that the bearing capacity of composite column is enhanced with the increase of GFRP tube wall thickness. Besides, the inside shaped steels restrain the concrete and carry the definite loads with reinforcing steel bars so as to increase the bearing capacity of composite column. Based on the limit equilibrium method and the unified theory, the calculation formulae of the bearing capacity of GFRP tube composite column filled with steel-reinforced concrete and reinforced concrete subjected to axial loading were respectively created. Moreover, the calculated results agreed well with the experimental ones. The results from the unified theory were closer to the experimental ones, and the calculation formulae were simple.

Keywords:GFRP tube; steel-reinforced concrete; composite column; axial bearing capacity; calculation formula

*國(guó)家教育部博士點(diǎn)基金項(xiàng)目（20050145012）。

作者簡(jiǎn)介：陳百玲，博士研究生，講師，Email:bailingc@163.com。

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