玻璃钢/复合材料 ›› 2018, Vol. 0 ›› Issue (10): 5-11.

• 基础研究 •    下一篇

CFRP索弦支穹顶预应力张拉锚具试验研究

张翔宇, 刘荣桂, 谢甫哲, 谢桂华   

  1. 江苏大学土木工程与力学学院,镇江212013
  • 收稿日期:2018-04-19 出版日期:2018-10-28 发布日期:2018-10-28
  • 作者简介:张翔宇(1990-),男,硕士,主要从事CFRP材料在土木工程中的应用基础方面的研究,294976368@qq.com。
  • 基金资助:
    国家自然科学基金项目(51478209);国家自然科学基金项目(51608234);江苏大学第16批科研立项(16A463)

EXPERIMENTAL STUDY ON ANCHORAGE PRESTRESSED TENSION OF CFRP CABLE SUSPENDOME

ZHANG Xiang-yu, LIU Rong-gui, XIE Fu-zhe, XIE Gui-hua   

  1. Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China
  • Received:2018-04-19 Online:2018-10-28 Published:2018-10-28

摘要: 基于内聚力模型的承载力公式对CFRP索粘结式锚具进行了优化设计,对试件进行锚固性能试验测试,并应用于CFRP索弦支穹顶结构中,验证其锚固性能并分析了环索、径索在加载过程中的界面应力分布规律。结果表明,环索锚固区界面应力分布在加载过程中一共有5个阶段,自由端应力在各阶段中最大。在到达临界阶段之前,环索中部应力小于加载端应力;在临界阶段之后,中部应力大于加载端应力;径索自由端应力在各阶段始终高于其他部位的应力。

关键词: 碳纤维, CFRP索锚具, 弦支穹顶, 应力分布

Abstract: Based on the formula of bearing capacity of cohesion force model, the CFRP cable bondage anchorage was optimized. The test of anchorage performance of the test piece was carried out. It was applied to the CFRP cable string dome structure, and the anchorage performance was verified and analyzed. The stress distribution of interfacial stress during the loading of radial cables. The results show that there are five stages in the interface stress distribution in the anchorage zone, and the free end stress is the largest in all stages. Before reaching the critical stage, the stress of the central cable is less than the stress at the loading end. After the critical stage, the stress in the middle is greater than the stress at the loading end. The stress at the free end of the cable is always higher than that of other parts in each stage.

Key words: carbon fiber, CFRP cable anchor, chord-supported dome, stress distribution

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