Study On The Development Of Anchorage Of Basalt Reinforcement Anchor Rod (Cable) And Engineering Application

BFRP reinforcement is a new composite material combined of multiple strands basalt fiber and resin matrix materials which are extruded, drawn and molded. However, the study of basalt fiber reinforcement used in support of the anchor is still less. This paper mainly researches BFRP reinforcement bolt (cable) for the ground anchorage of pit slope, but it is due to the nature of the material BFRP which can not be directly connected with ordinary steel anchor, it is necessary to design specific dedicated anchorage.The thesis gets the basic data of the anchorage design by test of influence factors for anchorage and adhesive bond strength; gets the key design parameters of anchorage by anchor technology test which studies the anchorage in roughening, cleaning rust, increasing the mechanical properties of tapered hole process under anchorage; gets applicability of all kinds of binder by finished binder and self match binder performance test. This paper designs corresponding dimension anchorage and drawing device for BFRP reinforcement bolt (cable),and carries out the mechanical strength test for anchorage, ultimately obtains content design requirement anchorage for drawing and locking BFRP reinforcement bolt (cable).We carry out field pull-out test for new designed BFRP reinforcement bolt (cable) to obtain ultimate tensile strength, it proves that the performance of designed anchorage achieves the actual engineering application. This thesis carries out support design, construction and monitoring for BFRP reinforcement bolt (cable) which is applied to foundation pit slope engineering, and it is verified that the BFRP reinforcement Bolt (Cable) can replace the strand anchor. Through the field pullout tests, it obtains that the single Φ14 mm BFRP reinforcement bolt ultimate pullout force is 143.00 kN, five bundles Φ14 mm BFRP reinforcement bolt ultimate pullout force is 574.6 kN, six bundlesΦ14mm BFRP reinforcement bolt ultimate pullout force is 649.2 kN. Through practical application of BFRP reinforcement bolt Soil slope support project, the effect of using Φ14 mm BFRP reinforcement supporting soil slope is the same to the effect of using Φ25 mm steel bolt supporting soil slope. Through practical application of BFRP reinforcement cable foundation pit slope support project, basalt reinforcement anchor can replace the traditional strand for foundation pit support, it is feasible that six bundlesΦ14 mm basalt reinforcement anchor can replace four bundlesΦ15.2 mm 4 strand anchor.BFRP reinforcement is a new geotechnical engineering reinforcement material which is high tensile strength, acid and good bonding properties with concrete. It suggests to spread its application in geotechnical engineering and verify its long-term mechanical properties.