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| 不同直径GFRP锚杆承载特征的现场对比试验 | |
| 引用本文： | 黄志怀,李国维,李玉起.不同直径GFRP锚杆承载特征的现场对比试验[J].玻璃钢/复合材料,2010(1):24-27,35. |
| 作者姓名： | 黄志怀 李国维 李玉起 |
| 作者单位： | 1. 珠江水利委员会珠江水利科学研究院,广州,510611;河海大学岩土工程科学研究所,南京,210098;岩土力学与堤坝工程教育部重点实验室,南京,210098 2. 河海大学岩土工程科学研究所,南京,210098;岩土力学与堤坝工程教育部重点实验室,南京,210098 3. 珠江水利委员会珠江水利科学研究院,广州,510611 |
| 摘 要： | 锚杆支护方法在岩体加固工程中应用广泛，锚杆作为支护结构的核心应具有足够的安全度和耐久性。由于钢材易腐蚀，钢锚杆的耐久性受到质疑。玻璃纤维增强塑料（GFRP）锚杆是一种由树脂和玻璃纤维复合而成的新型加固材料，具有较好的力学性能和耐腐蚀性能，用其代替传统钢筋用于边坡加固可较好地解决锚杆耐久性问题。本次试验为Ф6、Ф32两种类型GFRP错杆在相同岩性，全、强、弱三种不同风化程度围岩条件下的张拉试验，研究了GFRP锚杆的破坏特征及锚固机理。试验结果表明，这两种直径GFRP锚杆的最终破坏方式是锚杆自由段脆性劈裂破坏；GFRP锚杆极限承载力随锚杆直径增大而增加；Ф6小直径GFRP锚杆的应力传递深度受围岩风化程度影响较小；Ф32大直径GFRP锚杆的应力传递深度受围岩风化程度影响较大，锚杆的应力传递深度随围岩风化程度增加而增大；GFRP错杆与砂浆界面间的粘结强度随杆体直径增加而降低。 |
| 关 键 词： | 边坡 GFRP锚杆 张拉试验 粘结强度 |
FIELD CONTRAST TEST STUDY ON ANCHORING MECHANISM OF GFRP ANCHOR ROD WITH DIFFERENT DIAMETERS |
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| HUANG Zhi-huai,LI Guo-wei,LI Yu-qi.FIELD CONTRAST TEST STUDY ON ANCHORING MECHANISM OF GFRP ANCHOR ROD WITH DIFFERENT DIAMETERS[J].Fiber Reinforced Plastics/Composites,2010(1):24-27,35. | |
| Authors: | HUANG Zhi-huai LI Guo-wei LI Yu-qi |
| Affiliation: | HUANG Zhi-huai 1,2,3,LI Guo-wei 2,LI Yu-qi1(1.Pearl River Hydraulic Research Institute,Guangzhou 510611,China,2.Geotechnical Research Institute,Hohai University,Nanjing 210098,3.Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering,China) |
| Abstract: | Rock bolting is a support widely used in slope engineering,tunnel and large cave support,as well as reinforcement of building structure.As the main part of support structure,the bolt must have enough reliability and durability.However,it is easily eroded by the environment for steel,so the durability of steel bolt being used commonly should be paid more attention to.The glass fiber reinforced plastics(GFRP) bolt is a new kind reinforcement material which is compounded with resin and glass fiber,having bette... |
| Keywords: | slope GFRP anchor rod tensile test bond strength |
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