玻璃钢螺旋锚的现场拉拔试验  

Field pull out tests of FRP screw anchors

作　　者：王钊[1] 王金忠 曾繁平[1] 陈春红[1] 

机构地区：[1]武汉大学土木建筑工程学院,湖北武汉430072 [2]坦萨土工合成材料(武汉)有限公司,湖北武汉430056

出　　处：《岩土工程学报》2007年第10期1439-1442,共4页Chinese Journal of Geotechnical Engineering

基　　金：国家自然科学基金资助项目(50279036)

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。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.

关 键 词：玻璃钢 螺旋锚 锚杆 灌浆 拉拔力 

分 类 号：TU472[建筑科学—结构工程]