FRP管实心混凝土柱承载力的轴压试验研究*
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（1 浙江工业大学建筑工程学院， 杭州 310014； 2 杭州市建筑设计研究院有限公司， 杭州 310001；3 浙江工业大学建筑规划设计研究院有限公司， 杭州 310014）［摘要］为研究FRP管实心混凝土柱的受力性能，完成了10根柱的承载力轴压试验。参照试验结果分析了纤维铺设角度、混凝土强度对FRP管实心混凝土柱破坏形态、极限承载力和延性的影响。结果表明，柱的承载力随着纤维铺设角度的增大而减小，随着混凝土强度的提高而增大，但柱的极限应变均有所下降；FRP管实心混凝土短柱发生强度破坏，FRP管实心混凝土长柱发生失稳破坏。此外，试验得到的关系曲线还反映了FRP管实心混凝土柱的受力、变形情况，可为FRP管实心混凝土柱的深入研究提供参考。［关键词］FRP管实心混凝土柱; 纤维铺设角度; 极限承载力中图分类号：TU398+.9 文献标识码：A 文章编号：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*浙江省科技厅公益技术研究项目资助（2012C23059）。作者简介：杨俊杰，硕士，教授，Email:yjinjie@163.com。参考文献［1］吕志涛. 高性能材料FRP应用与结构工程创新［J］. 建筑科学与工程学报, 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, 赵均海. GFRP套管钢筋钢骨混凝土短柱轴压承载力研究［J］. 建筑结构, 2012, 42(10): 102-105.［4］王清湘, 关宏波. GFRP套管混凝土长柱轴压力学性能试验［J］. 建筑结构, 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.
