摘要
将FRP筋作为预应力筋使用,必须了解其应力松弛特性。要测定FRP筋的应力松弛特性,关键是要找到一种有效的试样端部锚固方法。FRP筋一般的锚具系统应用于松弛特性测试时存在这样或那样的缺陷,为此本文提出了一种创新的测试FRP筋应力松弛特性的试样端部加强锚固的方法,实现了松弛试验时端部近似为零的滑移,保证了试验段应变的恒定,从而可准确测定FRP筋的应力松弛性能。
As prestressing tendons, the stress relaxation property of FRP tendons must be studied. To survey it, the key is to find an effective method anchoring the specimen＇ s ends. The usual FRP tendon anchor systems are not fit to measure the stress relaxation property. Therefore, an innovation anchor method has been put forward in this paper. Applied the anchor system, the slip of the specimen＇ s ends is nearly zero so that the strain of the test section can be maintained constant during the test and the measure results should be accurate.
出处
《玻璃钢／复合材料》
CAS
CSCD
2009年第5期3-6,共4页
Fiber Reinforced Plastics/Composites
基金
交通部科技项目资助(200632800003-09)
上海市重点学科建设项目资助(B302)
关键词
FRP筋
应力松弛
试样
锚固方法
FRP tendon
stress relaxation
specimen
anchor method
