Study on Parameters of Planting Steel Bars for Reinforcement of Double-curvature Arch Bridge by Spurting Concrete

In reinforcing double-curvature arch bridge by planting steel bars in spurting concrete,the influences of steel bar type,anchorage length and bonding style on the anchorage strength were analyzed,and the reasonable and optimized parameters for planting steel bars were obtained,which provided reference to reinforcement design.Through analyzing the destruction characteristics of test anchor bolt,the influences of various aspects of planting technology on bolt anchorage strength were summarized.The results show that with reasonable anchorage length,and when the destruction occurs at the bonding spot of steel and structural silicone,the anchorage force is larger and the bond strength of planting steel is more reliable.