大截面尺寸碳纤维约束混凝土柱试验研究与压应力增量法计算
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（河北建筑工程学院， 张家口 075000）［摘要］通过5根碳纤维约束混凝土柱的大偏压试验，采用增量法对碳纤维约束混凝土柱在极限荷载下的混凝土压应力进行了计算分析，将得到的结果与已有约束混凝土应力-应变关系曲线进行对比，得到大截面尺寸碳纤维约束混凝土柱的计算模型。同时考虑到计算的简便，结合规范，给出了建议的大截面尺寸碳纤维约束混凝土应力-应变关系简化计算模型。［关键词］碳纤维布; 约束混凝土; 增量法中图分类号：TU375.3 文献标识码：A 文章编号：1002-848X(2015)09-0094-04Experimental study and compressive stress incremental method calculation of large cross-section carbon fiber reinforced polymer confined concrete columnBi Quanchao, Zhu Shouqin（Hebei Institute of Architecture and Civil Engineering, Zhangjiakou 075000, China）Abstract: Based on large eccentricity compression tests of 5 carbon fiber reinforced polymer(CFRP) confined concrete columns, the compressive stress of concrete in CFRP sheet confined concrete columns under ultimate load was calculated and analyzed by incremental method. The obtained stress-strain curve was compared with that of the existing confined concrete to get the calculation model of large cross-section CFRP confined concrete column. Considering the simplicity for calculation, simplified calculation model of stress-strain relationship for the large cross-section CFRP confined concrete was proposed combined with codes.Keywords: CFRP sheet; confined concrete; incremental method作者简介：毕全超，硕士，副教授，一级建造师，Email:hbjzdxbqc@sina.com。参考文献［1］GB 50367—2006 混凝土结构加固设计规范［S］. 北京：中国建筑工业出版社,2006.［2］CECS 146∶2003 碳纤维片材加固混凝土结构技术规程［S］. 北京：中国建筑工业出版社,2003.［3］吴刚,吕志涛.纤维增强复合材料约束混凝土矩形柱应力-应变关系的研究［J］.建筑结构学报,2004,25(3):99-106.［4］赵彤,谢剑,戴自强.碳纤维布约束混凝土应力-应变全曲线的试验研究［J］.建筑结构,2000,30(7):40-43.［5］丁洪涛.粘贴纤维布钢筋混凝土偏心受压柱试验与研究［D］.长沙:湖南大学,2003.［6］过镇海.混凝土的强度和变形［M］.北京：清华大学出版社，1997.［7］GB 50010—2010混凝土结构设计规范［S］.北京：中国建筑工业出版社，2011.
