| In recent years, CFRP (Carbon Fiber Reinforced Polymer/Plastics) reinforcement of the bridge structure and engineering research have become increasingly active. CFRP reinforcement works in the actual application is also becoming more widespread. But CFRP tendons used in prestressed structure, anchoring problem is also an important issue to be resolved. High ratios for tensile to compressive and to shear strength make it necessary to develop a new anchorage design concept for CFRP tendons. In this paper, to solve the real problems, combined with the advantages of bond-type anchorage and wedge-type anchorage, author assembled them into the wedge-bond type anchorage. Through the static load test of its comprehensive analysis of the performance of the mechanism of the wedge-bond type anchorage, author proved that products are Safe and reliable.Through the bonding mechanism analysis of the bond-anchorage, author Deduced chemical bond with the force of friction coupling relationship, and then leaded to second-order effect of radial stress, and thus forecasted to repeat the load to reduce the ultimate tension and During the trial Forecast result has been verified.solveing the shortcomings of the anchor, "notch" effect, combined with the advantages of the bond-anchorage that does not damage CFRP tendons, author assembled wedge-bond type anchorage. Through stick strain tablets on the steel sleeve, author test the security and reliability of wedge-bond type anchorage, and drawn mechanism of wedge-bond type anchorage.
|
PDF Full Text Request