在经典拉伸试验模型的基础上结合锚杆本身的受力特性,建立了一种改进的玻璃纤维锚杆拉伸试验模型.使用该模型对22 mm(实心)和25 mm(空心)玻璃纤维锚杆进行了拉伸试验.结果表明:通过使用钢套管锚固的方法,可避免拉伸试样与夹具直接接触,从而较好地解决了拉脱和抽芯等问题,极大提高了锚杆拉伸试验的成功率,且试验结果的准确度也较高;环氧树脂和水泥砂浆两种锚固剂均能满足该拉伸试验模型的锚固要求,相比之下水泥砂浆锚固的可操作性更强,经济性更好.

Based on the classical tensile test model and combining the force characteristics of anchor rods,an improved tensile test model for glass fiber anchor rods was established.And then tensile test was performed on 22 mm (solid) and 25 mm (hollow) glass fiber anchor rods with the established model.The results show that by the method of anchoring samples with steel casings,it could avoid the sample from directly contacting with the clamp and problems such as slippage and core pulling could be well solved,so the tensile test success rate of anchor rods was greatly improved.At the same time,the accuracy of test results was rather high.Both of the epoxy and cement mortar two kinds of anchoring agents could satisfy the anchoring requirements of the tensile test model.However,the operability and economy of cement mortar anchoring mode were better compared to epoxy anchoring mode.