论文部分内容阅读
为了研究加载速率对高温后变形钢筋与混凝土粘结性能的影响，采用30个拉拔试件研究了加载速率对粘结滑移曲线及粘结参数的影响。试验结果表明，高温后随着加载速率增加，粘结强度和残余强度随之增加，然而极限粘结应力对应的滑移量逐渐下降。加载速率对粘结性能的影响，取决于温度的大小。温度越高，加载速率对粘结性能的影响越显著。“,”In order to study the influence of loading rate on the bond behavior betweendeformedbars andconcrete under different temperature, a total of 30 pull-out specimenswere tested toinvestigate the effect of the loading rate on the bond slip curves and bond parameters. The experimental results show that, after subjecting to high temperature, the bond strength and the residual strength increase while the bond slip corresponding to ultimate bond stress decreaseswith the increase of loading rate. The influence of loading rate on bond behavior depending on the value of temperature. The higher is the temperature, the much more effects of loading rate exert on bond performance.