建筑结构学报2012，Vol.33Issue(9)：127-135,9.
重复荷载作用下钢筋混凝土锚固端黏结性能试验研究
Test study on bonding performance of reinforced concrete anchorage zone under repeated loads
摘要
Abstract
23 reinforced concrete Rebar＇ s peak and residual stress, pull-out specimens were tested under monotonic loading and repeated loading peak slip and residual slip at the loading end and free end were inspected in this test. The bonding stress-slip hysteretic curve was obtained. According to the rebar stress data, the distribution curve in the anchorage was calculated under monotonic loading and repeated loading. Variation characteristics of peak and residual bonding stress under repeated loads were summarized, and bonding stress distribution mechanism was analyzed. Research result shows that bonding strength is not influenced much by repeated loading. The peak slip and residual slip follow the three stage rule of fatigue failure. Bonding fatigue failure occurs when the rebar slippage under repeated loading reaches the maximum slippage under monotonic loading. With the increase of repeating times, the obvious double peak phenomenon was shown in the distribution of bonding stress along the anchorage length. The maximum bonding stress is about one fourth of the anchorage length from the loading end and free end. The results of the present study are expected to be useful for the thorough analysis of concrete structure＇ s fatigue performance.关键词
钢筋/混凝土/重复荷载试验/疲劳/黏结应力/滑移Key words
rebar/concrete/repeated loading test/fatigue/bonding stress/slip分类
建筑与水利引用本文复制引用
蒋德稳,邱洪兴..重复荷载作用下钢筋混凝土锚固端黏结性能试验研究[J].建筑结构学报,2012,33(9):127-135,9.基金项目
国家重点基础研究发展计划973项目 （）
