摘要
为了解决拉索锈蚀和疲劳问题,提高其耐久性,采用轻质、高强、耐腐蚀和耐疲劳的碳纤维(CFRP)筋制作拉索.以环氧树脂砂浆为粘结剂,研制CFRP筋粘结式锚具及成套拉索,并进行了静载试验.分析了影响CFRP拉索锚固性能的各种因素,并进行了相关试验.研究结果表明,筋表面粗糙程度、锚具内锥度、粘结胶的性能和灌浆压力等直接影响锚具的锚固性能.所研制的多丝CFRP拉索的性能稳定,锚固效率系数达95%以上,可直接应用于实际工程.
To improve the corrosion resistence and the fatigue life of stay cables,the Carbon Fiber Reinforced- Polymer（CFRP） was used for stay cables. The single-wire bond-anchorages and 7-wire bond-anchorages were developed for CFRP tendons with epoxy resin. Component assembling of stay cables with CFRP were tested. The influencing factors of bond-anchorage behaviors were induced. Results indicate that the coarseness of tendon, the interior angle of anchorage, the bond strength and the grouting pressure directly influence on anchoring. Moreover, the developed bond-anchorages have high anchor efficiency up to 95% and can be applied in civil engineering.
出处
《材料科学与工艺》
EI
CAS
CSCD
北大核心
2008年第4期463-466,470,共5页
Materials Science and Technology
基金
西部交通建设科技项目(200331882010)
