Anchorage Devices for Large Diameter Reinforcing Bars.

摘要

Results of nineteen pullout tests conducted on number 18,number 14and number 11,Grade 60steel reinforcing bars (ASTM A615-68) to evaluate end anchorage provided by an attached steel end-plate are reported. The effects of group action and low cycle dynamic loading are also reported. Short embedment lengths for anchored bars resulted in greater loaded-end slips than those realized by unanchored bars embedded in accordance with current allowable bond stresses. These slips,however,were less than the 'critical'value of 0.010of an inch at an applied steel stress of 24 kips per square inch.