玻璃钢/复合材料 ›› 2018, Vol. 0 ›› Issue (7): 64-68.

• 应用研究 • 上一篇    下一篇

CFRP筋粘结式锚具疲劳性能试验

谢桂华1, 唐永生1,2*, 李十泉1,3, 姚嘉诚1   

  1. 1.江苏大学土木工程与力学学院,镇江 212013;
    2.河南省信阳水利技工学校,信阳 464000;
    3.南京理工大学泰州科技学院城市建设与设计学院,泰州 225300
  • 收稿日期:2018-01-15 出版日期:2018-07-25 发布日期:2018-07-20
  • 通讯作者: 唐永生(1990-),男,硕士,主要从事碳纤维增强复合材料在土木工程中的应用基础研究,xinyang2005@126.com。
  • 作者简介:谢桂华(1976-),女,副教授,工学博士,主要从事FRP材料在桥梁工程中的应用研究。
  • 基金资助:
    国家自然科学基金项目(51508235,51608234);江苏省教育厅高校自然科学基金项目(17KJD580002)

FATIGUE PERFORMANCE TEST OF BOND-TYPE ANCHORAGE FOR CFRP TENDON

XIE Gui-hua1, TANG Yong-sheng1,2*, LI Shi-quan1,3, YAO Jia-cheng1   

  1. 1.Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China;
    2.Xinyang Technical School of Water Conservancy, Xinyang 464000, China;
    3.College of Urban Construction and Design, Taizhou Institute of Science and Technology, Taizhou 225300, China
  • Received:2018-01-15 Online:2018-07-25 Published:2018-07-20

摘要: 为了研究CFRP筋粘结式锚固系统的抗疲劳工作性能,以环氧砂浆为粘结介质制作了CFRP筋粘结式锚具试件,对其进行了不同参数的疲劳加载试验,并通过静载试验检验锚固系统疲劳加载后的静力性能。结果表明:①适当的疲劳加载有助于提高锚固系统的锚固性能;随着循环次数的增加,锚具两端的相对位置趋于更加稳定的状态;CFRP筋相对于粘结介质的滑移值增幅随加载次数的增加而减小;试件P-1、P-2、P-3分别加载到20万次、15万次、70万次时,滑移值不再增加,系统达到稳定状态;②疲劳加载提高了粘结式锚固系统低荷载作用时的粘结性能,较高荷载作用时其粘结锚固性能有所降低。

关键词: 碳纤维, 锚具, 疲劳, 粘结滑移, 稳定

Abstract: In order to study the fatigue performance of adhesive anchorage system for CFRP tendon, epoxy resin mixed with sand was adopted as bond medium to make the bond-type anchorage systems for CFRP tendon, and they are tested under different cyclic loading conditions. Then the static performance of these systems which have experienced fatigue loading was inspected by static load test. The result shows as follows: ①a certain degree of fatigue loading is benefit to improve the synergistic effect and anchorage performance of the system. With the increasing of cycles, the relative position of the two ends of the anchorage system tends to be more stable. When P-1, P-2 and P-3 were loaded to 200,000, 150,000 and 700,000 times, respectively, the relative displacement no longer increased and the system entered into a stable state. ②The fatigue loading improved the bond performance of the anchorage system when the tensile loadwas low, while it was declined when the load was high.

Key words: carbon fiber, anchorage, fatigue, bond slip, stable

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