BFRP锚杆与钢筋锚杆现场拉拔试验对比分析

摘要

By field pull-out test,the pullout ultimate bearing capacity of BFRP anchor bolt was tested,and then its anchorage performance was studied by the comparison with steel bodepending on the test data,the average single ultimate pullout resistance and ultimate tensile strength of BFRP anchor bolt were analyzed.The result shows that six φ14 BFRP anchor bolts have the equivalent ultimate pullout resistance to three φ28 HRB400 steel bolts and,in case of the bolt made of BFRP bars,the average ultimate pullout resistance of single bar is about 80 ％ of that of the BFRP bars.%通过BFRP锚杆的现场拉拔试验,测试BFRP锚杆的抗拔极限承载力,并与钢筋锚杆对比,研究BFRP锚杆的锚固性能.根据试验数据分析BFRP锚杆的平均单根极限抗拔力和极限抗拉强度.结果表明:6根φ14BFRP锚杆极限抗拔力与3根φ28 HRB400钢筋锚杆极限抗拔力相当.多束BFRP筋组成锚杆时,平均单筋极限抗拔力约为BFRP筋极限抗拔力的80％.