(1 中冶建筑研究总院有限公司， 北京 100088； 2 西南科技大学土木与建筑学院， 绵阳 621010；3 河北悦城房地产开发有限公司， 邢台  054000）

［摘要］根据规范GB/T 26743—2011的规定，对不同直径的碳纤维复材筋（CFRP筋）进行了基本力学性能试验，主要测定碳纤维复材筋的抗拉强度、弹性模量和延伸率等力学性能指标。详细介绍了碳纤维复材筋的试验过程、试验方法以及破坏形态。通过对试验结果进行分析表明：碳纤维复材筋为分散式纤维断裂破坏，应力-应变曲线为直线；生产拉挤速率和纤维体积含量对力学性能的影响规律先上升后下降，存在较优范围；螺纹成型工艺压挤成型效果要好于缠绕工艺二次成型；环氧胶膜粘砂、环氧树脂粘砂、打磨处理对锚固效果的影响依次递减。

［关键词］碳纤维复材筋； 力学性能； 影响因素

中图分类号：TU375文献标识码：A文章编号：1002-848X(2020)02-0072-04

Experimental study on influencing factors of mechanical properties of CFRP bars for structural  engineering

Li Biao1， Yang Yongxin1， Zhao Jinjie1， Yu Jianwei2， Hou Muyi2， Wang Lu3

（1 Central Research Institute of Building and Construction Co., Ltd.,  MCC,  Beijing 100088, China；2 School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010, China；3 Hebei Yuecheng Real Estate Development Co., Ltd., Xingtai 054000, China)

Abstract:According to the provisions of GB/T 26743—2011, the basic mechanical properties of CFRP bars with different diameters were tested, mainly measuring the tensile strength, elastic modulus, elongation and other mechanical properties of CFRP bars. The experimental process, experimental method and failure mode of CFRP bars were introduced in detail. Through the analysis of the experimental results, it is shown that: the CFRP bars feature distributed fiber fracture failure, and the stress-strain curve is a straight line; the influence rule of the production pull-extrusion rate and the fiber volume content on the mechanical properties rises first and then falls, and there is a better range; the extrusion effect of the thread forming process is better than the secondary forming of the winding process; the three processes of epoxy film bonded sand, epoxy resin bonded sand and polishing treatment have decreasing effect on anchorage in turn.

Keywords:CFRP bar; mechanical property; influencing factor

*国家重点研发计划项目（2017YFC0703000），专项科研基金课题（YBC2015ZX10），中冶建筑研究总院有限公司重大课题（YCK2017KY01）。

作者简介：李彪，硕士，高级工程师，Email：no_1libiao@163.com。