中国塑料 ›› 2023, Vol. 37 ›› Issue (10): 15-23.DOI: 10.19491/j.issn.1001-9278.2023.10.003

• 材料与性能 • 上一篇    下一篇

碳⁃玻璃纤维增强复合材料混杂杆体的锚固性能研究

沈海娟1, 李承高2,3, 郭瑞2,3, 辛美音1, 黄翔宇1, 张中慧4, 咸贵军2,3()   

  1. 1.中国石化上海石油化工股份有限公司,上海 200540
    2.哈尔滨工业大学土木工程学院,哈尔滨 150090
    3.哈尔滨工业大学结构工程灾变与控制教育部重点实验室,哈尔滨 150090
    4.中国石油化工集团公司胜利油田分公司,山东 东营,257100
  • 收稿日期:2023-04-17 出版日期:2023-10-26 发布日期:2023-10-23
  • 通讯作者: 咸贵军(1972-),男,博士,教授,博士生导师,研究方向为土木工程纤维增强树脂复合材料与结构,gjxian@hit.edu.cn
    E-mail:gjxian@hit.edu.cn
  • 基金资助:
    国家重点研发计划(2022YFC3801800);中央高校基本科研业务费专项资金(HIT.OCEF.2022032)

Study on anchoring performance of carbon⁃glass⁃fiber⁃reinforced polymer composite rods

SHEN Haijuan1, LI Chenggao2,3, GUO Rui2,3, XIN Meiyin1, HUANG Xiangyu1, ZHANG Zhonghui4, XIAN Guijun2,3()   

  1. 1.Sinopec Shanghai Petrochemical Co,Ltd,Shanghai 200540,China
    2.Key Lab of Structural Dynamic Behavior and Control,Ministry of Education,Harbin Institute of Technology,Harbin 150090,China
    3.School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China
    4.Shengli Oilfield Company,China Petroleum & Chemical Corporation (SINOPEC),Dongying 257100,China
  • Received:2023-04-17 Online:2023-10-26 Published:2023-10-23
  • Contact: XIAN Guijun E-mail:gjxian@hit.edu.cn

摘要:

针对碳/玻璃纤维增强复合材料锚固失效问题,研究了3种典型锚固系统的应力分布及锚固机理。研究发现,碳纤维层锚固系统由于界面脱黏及截面削弱导致锚固承载力较低;力学锚固系统易对杆体产生初始挤压损伤并形成应力集中;黏结型锚固系统由于杆体/黏结剂界面黏结强度较低而产生脱黏失效。针对上述3种锚固系统存在的截面削弱、应力集中及界面脱黏等问题,提出了考虑楔块挤压与树脂黏结的楔块⁃黏结复合型锚固系统,有限元模拟与拉伸试验结果表明,楔块⁃黏结复合型锚固系统锚具内应力分布均匀,杆体发生爆裂破坏,锚具内未出现杆体滑移,锚固系统极限锚固承载力为360.1 kN,有效地解决了复合材料混杂杆体的锚固难题。

关键词: 碳/玻璃纤维混杂, 复合材料杆体, 锚固性能, 有限元模拟, 拉伸测试

Abstract:

In this paper, the stress distribution and anchoring mechanism of three typical anchoring systems were studied for the anchoring failure of carbon/glass fiber reinforced polymer composite rods. The results indicated that the anchoring capacity of the carbon fiber layer anchoring system was low due to the interfacial debonding and cross⁃section weakening. The mechanical anchoring system easily generated an initial compressive damage and stress concentration for the rod. The adhesive type anchoring system produced a debonding failure due to the low bonding strength of the rod⁃adhesive interface. Aiming at the problems of section weakening, the stress concentration and interfacial debonding existing in the above three anchoring systems, this study proposed a wedge⁃bonded compound anchoring system considering of the wedge extrusion and resin bonding. The results from the finite element simulation and tensile test indicated that the stress distribution in the anchor of the wedge⁃bond compound anchor system was uniform, the rod underwent a burst failure, and there was no slippage in the anchor. The ultimate anchor bearing capacity of the anchor system was 360.1 kN. This effectively solves the anchor failure problem in the composite rods.

Key words: carbon?glass fiber hybrid, composite rod, anchorage performance, finite element simulation, tensile test

中图分类号: