摘要
玻璃钢锚杆因其耐腐蚀性、高强度等优点被广泛应用,同时预紧力是影响玻璃钢锚杆锚固性的重要原因。根据锚杆支护原理和玻璃钢现场锚固实践,通过理论分析和实验的方法分析玻璃钢锚杆预紧力的相关影响因素,再针对影响玻璃钢锚杆预紧力的因素进行不同的预紧力试验与数据的分析。研究结果表明,在影响玻璃钢锚杆预紧力的因素中,扭矩施加的强度和扭矩的范围是影响预紧力和锚固力的主要原因,通过减小玻璃钢锚杆的螺距和螺纹牙高,可以保证玻璃钢锚杆支护能力的充分发挥。
FRP bolt is widely used because of its corrosion resistance and high strength,and the preload is an important factor affecting the anchorage of FRP bolt.According to the principle of bolt support and the field application practice of FRP bolt,the factors affecting the preload of FRP bolt are analyzed by means of theoretical analysis and experimental method,and different preload tests and analysis are carried out.The results show that among the factors affecting the preload of FRP bolt,the strength and range of torque are the main reasons affecting the preload and anchoring force.By reducing the pitch and thread height of FRP bolt,the supporting capacity of FRP bolt can be brought into full play.
作者
薛福祥
刘建庄
李准
杨拓
XUE Fuxiang;LIU Jianzhuang;LI Zhun;YANG Tuo(School of Mining Engineering,North China University of Technology,Tangshan 063210,China)
出处
《陕西煤炭》
2021年第5期6-8,13,共4页
Shaanxi Coal
