Probabilistic prediction model for RC bond failure mode
Probabilistic prediction model for RC bond failure mode
复制标题
DOI：
10.1016/j.engstruct.2021.111944
复制
发表时间：
2021-04
影响因子：
5.5
通讯作者：
Ahmad Soraghi;Qindan Huang
中科院分区：
文献类型：
--
作者：
Ahmad Soraghi;Qindan Huang
充分的钢筋-混凝土粘结是保证钢筋混凝土结构可靠性能的关键。许多因素，如混凝土性能、混凝土覆盖深度、横向钢筋和腐蚀的存在都会影响粘结行为，从而影响结构性能。虽然之前的许多研究都集中在上述因素对粘结强度的影响上，但这些因素对粘结破坏模式的影响并没有得到深入的研究。本文建立了考虑载荷类型、腐蚀等多种影响因素的键合破坏模式概率预测模型。本研究利用132个梁端试件在单调和循环荷载作用下的粘结试验结果，采用分级方法建立预测模型，评估粘结行为对搭接RC梁可靠性的影响。
Adequate rebar-concrete bonding is crucial to ensure the reliable performance of reinforced concrete (RC) structures. Many factors such as the concrete properties, concrete cover depth, transverse reinforcement, and the presence of corrosion will affect the bond behavior, and consequently, the structural performance. While many prior studies have focused on the influence of the aforementioned factors on the bond strength, the impact of these factors on the bond failure mode has not been thoroughly investigated. A probabilistic bond failure mode prediction model that considers various influencing factors including loading type and corrosion is developed in this study. This study uses the bond testing results of 132 beam-end specimens subjected to monotonic and cyclic loading and adopts classification methods to develop the prediction model, which is then used to evaluate the impact of bond behavior on the reliability of a RC beam with a lap splice.