FRP管實(shí)心混凝土柱承載力的軸壓試驗(yàn)研究*
楊俊杰1，周濤2，章雪峰3
- 摘 要
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（1 浙江工業(yè)大學(xué)建筑工程學(xué)院， 杭州 310014； 2 杭州市建筑設(shè)計(jì)研究院有限公司， 杭州 310001；3 浙江工業(yè)大學(xué)建筑規(guī)劃設(shè)計(jì)研究院有限公司， 杭州 310014）［摘要］為研究FRP管實(shí)心混凝土柱的受力性能，完成了10根柱的承載力軸壓試驗(yàn)。參照試驗(yàn)結(jié)果分析了纖維鋪設(shè)角度、混凝土強(qiáng)度對(duì)FRP管實(shí)心混凝土柱破壞形態(tài)、極限承載力和延性的影響。結(jié)果表明，柱的承載力隨著纖維鋪設(shè)角度的增大而減小，隨著混凝土強(qiáng)度的提高而增大，但柱的極限應(yīng)變均有所下降；FRP管實(shí)心混凝土短柱發(fā)生強(qiáng)度破壞，F(xiàn)RP管實(shí)心混凝土長(zhǎng)柱發(fā)生失穩(wěn)破壞。此外，試驗(yàn)得到的關(guān)系曲線還反映了FRP管實(shí)心混凝土柱的受力、變形情況，可為FRP管實(shí)心混凝土柱的深入研究提供參考。［關(guān)鍵詞］FRP管實(shí)心混凝土柱; 纖維鋪設(shè)角度; 極限承載力中圖分類號(hào)：TU398+.9 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2014)22-0072-04Experimental research on bearing capacity of FRP tube solid concrete column under axial loadingYang Junjie1, Zhou Tao2, Zhang Xuefeng3（1 School of Building Engineering, Zhejiang University of Technology, Hangzhou 310014, China; 2 Hangzhou Institute of Architectural Design Co., Ltd., Hangzhou 310001, China; 3 Architectural and Planning Design & Research Institute Co., Ltd., Zhejiang University of Technology, Hangzhou 310014, China )Abstract: In order to study the mechanical properties of FRP tube solid concrete column, experiments of 10 composite columns under axial loading were conducted. Influences of fiber orientation angle and concrete strength on failure pattern, ultimate bearing capacity and ductility of FRP tube solid concrete column were analyzed based on experimental results. The results show that the bearing capacity of composite columns decreases with the increase of fiber orientation angle and increases with the increase of concrete strength, but ultimate strain of composite columns all goes down. Composite short columns are destroyed due to insufficient strength, and long columns are destroyed due to instability. In addition, various relationship curves of experiment effectively show the stress and deformation conditions of FRP tube solid concrete columns, which provides reference for further research of the FRP tube solid concrete column.Keywords: FRP tube solid concrete column; fiber orientation; ultimate bearing capacity*浙江省科技廳公益技術(shù)研究項(xiàng)目資助（2012C23059）。作者簡(jiǎn)介：楊俊杰，碩士，教授，Email:yjinjie@163.com。參考文獻(xiàn)［1］呂志濤. 高性能材料FRP應(yīng)用與結(jié)構(gòu)工程創(chuàng)新［J］. 建筑科學(xué)與工程學(xué)報(bào), 2005，22 (1): 1-5.［2］MIRMIRAN A, SHAHAWY M. A new concrete-filled hollow FRP composite column［J］. Composites Part B:Engineering, 1996, 27B(3-4): 263-268.［3］王娟, 趙均海. GFRP套管鋼筋鋼骨混凝土短柱軸壓承載力研究［J］. 建筑結(jié)構(gòu), 2012, 42(10): 102-105.［4］王清湘, 關(guān)宏波. GFRP套管混凝土長(zhǎng)柱軸壓力學(xué)性能試驗(yàn)［J］. 建筑結(jié)構(gòu), 2010, 40(11): 80-83.［5］PESSIKI S. Axial behavior of reinforced concrete columns confined with FRP jackets［J］. Journal of Composites for Construction, 2001, 5(4): 237-245.［6］SAAFI M. Behavior of concrete columns confined with fiber reinforced polymer tubes［J］. ACI Materials Journal, 1999, 96(4): 500-508.［7］MIRMIRAN AMIR, SHAHAWY M. Slenderness limit for hybrid FRP-concrete columns［J］. Journal of Composites for Construction, 2001, 5(1): 26-34.［8］MIRMIRAN AMIR. Behavior of concrete columns confined by fiber composites［J］. Journal of Structural Engineering, 1997, 123(5): 583-590.
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