钢筋及GFRP筋锚杆与框架梁连接方式研究

李国维; 刘学; 贺冠军; 吴建涛; 郑诚

doi:10.11779/CJGE201611008

钢筋及GFRP筋锚杆与框架梁连接方式研究 English Version

李国维^{1, 2},
刘学³,
贺冠军²,
吴建涛^2, ,,
郑诚³

1. 河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京210098;
2. 河海大学道路与铁道工程研究所,江苏南京210098;
3. 河海大学岩土工程科学研究所,江苏南京 210098

基金项目: 国家自然科学基金项目（41472240）; 广东省教育部科技

详细信息

作者简介:
李国维(1964- ),男,博士,研究员,主要从事软基路堤变形和高边坡稳定性方面的研究工作。E-mail: lgwnj@163.com。

通讯作者:
吴建涛，E-mail：33528418@qq.com

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出版历程
- 收稿日期: 2015-10-10
- 发布日期: 2016-11-19

Connection of frame beams with anchor roads with GFRP and steel bars

LI Guo-wei^{1, 2},
LIU Xue³,
HE Guan-jun²,
SIDI^2, ,,
WU Jian-tao³

1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China;
2. Highway and Railway Research Institute, Hohai University, Nanjing 210098, China;
3. Geotechnical Research Institute, Hohai University, Nanjing 210098, China

摘要

摘要: 锚杆与框架梁的连接方式影响加固效果和工艺流程。GFRP筋锚杆以其耐腐蚀、高强度特性成为钢筋锚杆腐蚀问题解决途径之一,GFRP筋锚杆与框架梁的有效连接方式是需要研究的问题。通过钢筋折杆、钢筋直杆及GFRP筋直杆的框架梁锚固模型试验,研究钢筋和GFRP筋锚杆框架梁锚固效果的差异。研究结果表明,为施加预应力而研制的锁定装置能够实现FRP筋的预应力张拉和锁定,工作状态稳定,拆装方便操作简单;钢筋折杆的框架梁锚固效果明显优于钢筋直杆锚固形式,相同厚度梁体下,折杆框架梁锚固结构能承担更高的荷载;钢筋直杆与GFRP筋直杆的框架梁锚固效果相近;以GFRP筋直杆等体积取代钢筋锚杆时,按照钢筋弯折锚固形式设计的框架梁厚度不能直接用于GFRP筋锚杆锚固,须根据直杆锚固试验确定框架梁厚度。
- 连接方式 /
- 锁定装置 /
- 锚固效果 /
- 框架梁
Abstract: The connection of anchor rods with frame beams can significantly influence the anchoring effectiveness and technological process. Glass fiber reinforced polymer (GFRP) bar is a good substitute to steel bar owing to its significant corrosion resistance and high strength characteristics. The connecting quality between GFRP bars and frame beams is a problem that needs to be studied. Through model tests on anchorage of frame beams, the anchoring effect of GFRP bars, straight steel bars and bending steel bars is analyzed. The test results show that the device developed for the application of prestressing is stable, and easy to assemble and disassemble. The anchoring effectiveness of steel bars with bending end is better than that with straight bars. The anchoring quality of GFRP bars and steel bars is similar. In addition, anchor structure of GFRP bars cannot follow the existing standards designed for the bending steel bars, and its anchoring thickness needs to be decided by model tests on anchorage of frame beams for straight bars.
- connection /
- locking device /
- anchoring effectiveness /
- frame beam

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参考文献(18)

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