Development of Non-metallic Anchorage System for FRP Tendons
玻璃钢筋非金属锚固系统的研制
基本信息
- 批准号:05650437
- 负责人:
- 金额:$ 1.41万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for General Scientific Research (C)
- 财政年份:1993
- 资助国家:日本
- 起止时间:1993 至 1994
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The authors have newly developed a non-metallic anchorage system using highly expansive material. The results obtained in this study are summarized below.(1) Non-metallic anchoring devices can be made of CFRP reinforcement and epoxy resin mortar.(2) Double layr CFRP spiral reinforcement is able to resist the inner expansive pressure up to more than 40 MPa of highly expansive material. The CFRP spiral hoop inside with congested pitch is also effective to resist tensioning force of tendon.(3) Axial stiffness, needed to resist the prestressing force, can be obtained by reinforcing with CFRP strand/rod. Reinforcement ratio of 4-5% is found to be appropriate from the viewpoints short/long term displacement and workability of resin mortar grouting.(4) Ultimate load of the non-metallic anchoring devices in compression is more than 400 kN.The prestressing force about 100kN is safe.(5) The decrease of prestressing force is mainly caused by the slippage of CFRP tendon at the end of anchoring device. However, the influence of slippage on the decrease of prestressing force becomes negligibly small when the length of tendon will be much longer in practice.(6) The prestressing system with newly developed non-metallic anchoring devices is considered as a practical method.
作者新开发了一种使用高膨胀材料的非金属锚固系统。本研究获得的结果总结如下。(1)非金属锚固装置可由CFRP筋和环氧树脂砂浆制成。(2)双层CFRP螺旋筋能够抵抗高膨胀材料高达40 MPa以上的内膨胀压力。螺旋箍筋内的密集节距也能有效地抵抗预应力筋的张拉力。(3)轴向刚度,需要抵抗预应力,可以通过增强与碳纤维布股/杆。从树脂砂浆灌浆的近、远期位移和工作性能等方面考虑,加固率以4-5%为宜。(4)非金属锚固件受压极限荷载大于400 kN,预应力100 kN左右是安全的。(5)预应力的降低主要是由于锚具端部CFRP筋的滑移引起的。但在实际工程中,当预应力筋的长度较长时,滑移对预应力的影响很小。(6)采用新型非金属锚固装置的预应力体系被认为是一种实用的方法。
项目成果
期刊论文数量(24)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Harada, T.: "Development of Non-metallic Anchoring Devices for FRP Tendons" Proceedings of Japan Concrete Institute. Vol.15, No.2 (in Japanese). 853-858 (1993)
Harada, T.:“FRP 筋非金属锚固装置的开发”日本混凝土协会论文集。
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Harada, T.: "New FRP Tendon Anchorage System Using Highly Expansive Material for Anchoring" Proceedings of FIP Symposium '93 Modern Prestressing Techniques and their Applications, Kyoto. Vol.II. 711-718 (1993)
Harada, T.:“使用高膨胀材料进行锚固的新型 FRP 腱锚固系统”FIP 研讨会 93 现代预应力技术及其应用论文集,京都。
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Tetsuo HARADA: "DEVELOPMENT OF NON-METALLIC ANCHORING DEVICESE FOR FRP TENDONS" Proceedings of Second International Symposium on Non-Metallic Reinforcement for Concrete Structures,Ghent,Belgium. (印刷中). (1995)
Tetsuo HARADA:“FRP 筋非金属锚固装置的开发”第二届国际混凝土结构非金属加固研讨会论文集,比利时根特(1995 年出版)。
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Tetsuo HARADA: "DEVELOPMENT OF NON-METALLIC ANCHORING DEVICES FOR FRP TENDONS" Proceedings of Second International Symposium on Non-Metallic Reinforcement for Concrete Structures,Ghent,Belgium. (印刷中). (1995)
Tetsuo HARADA:“FRP 筋非金属锚固装置的开发”第二届国际混凝土结构非金属加固研讨会论文集,比利时根特(1995 年出版)。
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徳光 卓: "連続繊維補強材のノンメタリック緊張定着工法開発に関する研究" 第4回プレストレストコンクリートの発展に関するシンポジウム論文集. Vol.4. 283-288 (1994)
Takashi Tokumitsu:“连续纤维加固非金属拉伸锚固方法的发展研究”第四届预应力混凝土发展研讨会论文集第4卷283-288(1994)。
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HARADA Tetsuo其他文献
HARADA Tetsuo的其他文献
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