论文部分内容阅读
通过对不同配比的6根再生混凝土(RAC)柱进行低周反复加载试验。由于现有普通混凝土结构地震破坏损伤模型均为基于普通混凝土结构所构建的,是否适用于RAC结构的地震损伤破坏计算仍不明确;为能够有效考虑RAC中再生骨料取代率及混杂纤维掺量等因素所造成的普通混凝土结构地震破坏损伤模型中循环荷载系数β的不确定性及其对损伤指数计算结果的影响,同时提高计算模型的预见性与可靠性,本文提出了一种适用于RAC结构的改进的双参数损伤模型。通过模型的计算结果与实际结构各震害破损度Dc的对比,确定了适用于RAC结构的双参数损伤模型中循环荷载系数β的值。
Low-cycle repeated loading test was carried out on 6 recycled concrete (RAC) columns with different proportions. It is still not clear whether the earthquake damage damage calculation of RAC structure is applicable to existing earthquake damage damage models of ordinary concrete structures based on common concrete structures. In order to effectively consider the replacement rate of recycled aggregate materials and the mixed fiber content in RAC And other factors caused by the ordinary concrete structure damage damage model cyclic loading coefficient β uncertainty and its impact on the calculation of damage index results, while improving the predictive predictive and reliability of the model, this paper presents a suitable RAC Structure of the improved two-parameter damage model. Through the comparison between the calculated results of the model and the damage Dc of the actual structure, the value of the cyclic loading coefficient β in the two-parameter damage model suitable for the RAC structure is determined.