玻璃钢螺旋锚的现场拉拔试验

玻璃钢螺旋锚的现场拉拔试验 English Version

基金项目: 国家自然科学基金资助项目(50279036)

1.School of Civil and Architectural Engineering Wuhan University Wuhan 430072 China 2.Tensar Geosynthetics Wuhan Co. Ltd Wuhan 430056 China

摘要: 回顾了FRP螺旋锚的基本结构型式,介绍现场拉拔试验的设计,完成了无灌浆和灌浆FRP螺旋锚的现场拉拔试验。无灌浆锚杆的最大拉拔力约在10 kN左右,而灌浆锚杆的拉拔力提高到15～20 kN,且拉拔位移较小。拉拔试验结果与现有拉拔力公式的计算值进行比较,并对螺旋锚的结构和施工提出一些改进意见。
- 玻璃钢 /
- 螺旋锚 /
- 锚杆 /
- 灌浆 /
- 拉拔力
Abstract: As a new-type of soil anchor,the fiber reinforced plastics(FRP) screw anchor has a lot of attractive properties,such as high strength,light weight,convenient installation,light pollution,high corrosion-resistance and low cost.The basic structure of FRP screw anchor and their field pull-out tests were introduced,and the test results of un-grouted and grouted anchors were presented.The maximum pull out force of the grouted anchors was about 15～20 kN with less pull out displacement compared with that of un-grouted ancthors,whose pull out force was about 10 kN.The pull out forces of both grouted and un-grouted anchors were compared with those obtained from design formulas.Finally,some ideas were put forward to improve the design and construction of FRP screw anchors.
- FRP /
- screw anchor /
- anchor rod /
- grouting /
- pull out force