中文摘要：

本文建立了混凝土坝长期运行碱骨料反应模型。该模型考虑碱骨料化学反应与力学的耦合作用,碱骨料化学反应动力学考虑温度、相对湿度的非均匀分布和混凝土应力状态的影响,混凝土的力学行为包括弹塑性损伤和长期蠕变效应。采用该模型分析了受碱骨料反应作用的法国Temple-sur-Lot闸坝长期运行性态,计算得到的坝体变形与实测结果吻合良好,损伤开裂情况也与实际裂缝分布接近。因此,该模型适用于分析和预测遭受碱骨料反应病害的混凝土坝长期运行的膨胀变形和损伤开裂行为,可为工程修复提供参考。

英文摘要：

A numerical model for long-term behavior of concrete dams affected by alkali-aggregate reaction （AAR） is developed. This model combines the kinetics of AAR with a plastic-damage model and thus it can couple chemical effect with mechanical behavior. It also considers the influences of nonuniform temperature and relative humidity distribution in the concrete affected and the effects of stress state on AAR-induced expansion and long-term creep strain. The model has been applied to analysis on the long-term behavior of the Temple-sur-Lot darn that is suffering from AAR. The calculations of swelling displacements of the dam are in good agreement with the measurements, and the cracking pattern is also close to the in-situ observation. Therefore, this model is capable of predicting the swelling and cracking of AAR-affected concrete dams in long-term operation.